License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.
By default all files without license information are under the default
license of the kernel, which is GPL version 2.
Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.
How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,
Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.
The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.
The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.
Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if <5
lines).
All documentation files were explicitly excluded.
The following heuristics were used to determine which SPDX license
identifiers to apply.
- when both scanners couldn't find any license traces, file was
considered to have no license information in it, and the top level
COPYING file license applied.
For non */uapi/* files that summary was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 11139
and resulted in the first patch in this series.
If that file was a */uapi/* path one, it was "GPL-2.0 WITH
Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 WITH Linux-syscall-note 930
and resulted in the second patch in this series.
- if a file had some form of licensing information in it, and was one
of the */uapi/* ones, it was denoted with the Linux-syscall-note if
any GPL family license was found in the file or had no licensing in
it (per prior point). Results summary:
SPDX license identifier # files
---------------------------------------------------|------
GPL-2.0 WITH Linux-syscall-note 270
GPL-2.0+ WITH Linux-syscall-note 169
((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21
((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17
LGPL-2.1+ WITH Linux-syscall-note 15
GPL-1.0+ WITH Linux-syscall-note 14
((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5
LGPL-2.0+ WITH Linux-syscall-note 4
LGPL-2.1 WITH Linux-syscall-note 3
((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3
((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1
and that resulted in the third patch in this series.
- when the two scanners agreed on the detected license(s), that became
the concluded license(s).
- when there was disagreement between the two scanners (one detected a
license but the other didn't, or they both detected different
licenses) a manual inspection of the file occurred.
- In most cases a manual inspection of the information in the file
resulted in a clear resolution of the license that should apply (and
which scanner probably needed to revisit its heuristics).
- When it was not immediately clear, the license identifier was
confirmed with lawyers working with the Linux Foundation.
- If there was any question as to the appropriate license identifier,
the file was flagged for further research and to be revisited later
in time.
In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.
Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights. The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.
Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.
In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.
Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
- a full scancode scan run, collecting the matched texts, detected
license ids and scores
- reviewing anything where there was a license detected (about 500+
files) to ensure that the applied SPDX license was correct
- reviewing anything where there was no detection but the patch license
was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
SPDX license was correct
This produced a worksheet with 20 files needing minor correction. This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.
These .csv files were then reviewed by Greg. Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected. This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.) Finally Greg ran the script using the .csv files to
generate the patches.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-01 14:07:57 +00:00
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# SPDX-License-Identifier: GPL-2.0
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2005-04-16 22:20:36 +00:00
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config MIPS
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bool
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default y
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32-bit userspace ABI: introduce ARCH_32BIT_OFF_T config option
All new 32-bit architectures should have 64-bit userspace off_t type, but
existing architectures has 32-bit ones.
To enforce the rule, new config option is added to arch/Kconfig that defaults
ARCH_32BIT_OFF_T to be disabled for new 32-bit architectures. All existing
32-bit architectures enable it explicitly.
New option affects force_o_largefile() behaviour. Namely, if userspace
off_t is 64-bits long, we have no reason to reject user to open big files.
Note that even if architectures has only 64-bit off_t in the kernel
(arc, c6x, h8300, hexagon, nios2, openrisc, and unicore32),
a libc may use 32-bit off_t, and therefore want to limit the file size
to 4GB unless specified differently in the open flags.
Signed-off-by: Yury Norov <ynorov@caviumnetworks.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Yury Norov <ynorov@marvell.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2018-05-16 08:18:49 +00:00
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select ARCH_32BIT_OFF_T if !64BIT
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2018-11-07 23:14:09 +00:00
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select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT
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2020-01-22 10:58:51 +00:00
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select ARCH_HAS_FORTIFY_SOURCE
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select ARCH_HAS_KCOV
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select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI)
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2017-05-15 09:46:35 +00:00
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select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
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2018-11-20 00:49:37 +00:00
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select ARCH_HAS_UBSAN_SANITIZE_ALL
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2017-05-15 09:46:35 +00:00
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select ARCH_SUPPORTS_UPROBES
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2015-09-29 10:19:48 +00:00
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select ARCH_USE_BUILTIN_BSWAP
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2017-05-15 09:46:35 +00:00
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select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
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2017-06-10 00:26:42 +00:00
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select ARCH_USE_QUEUED_RWLOCKS
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2017-06-10 00:26:43 +00:00
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select ARCH_USE_QUEUED_SPINLOCKS
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2019-09-23 22:39:18 +00:00
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select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
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2017-05-15 09:46:35 +00:00
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select ARCH_WANT_IPC_PARSE_VERSION
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2019-12-04 00:46:31 +00:00
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select BUILDTIME_TABLE_SORT
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2017-05-15 09:46:35 +00:00
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select CLONE_BACKWARDS
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2018-11-08 23:44:55 +00:00
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select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1)
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2017-05-15 09:46:35 +00:00
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select CPU_PM if CPU_IDLE
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select GENERIC_ATOMIC64 if !64BIT
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select GENERIC_CLOCKEVENTS
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select GENERIC_CMOS_UPDATE
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select GENERIC_CPU_AUTOPROBE
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2019-06-21 09:52:46 +00:00
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select GENERIC_GETTIMEOFDAY
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MIPS: Use GENERIC_IOMAP
MIPS has a copy of lib/iomap.c with minor alterations, none of which are
necessary given appropriate definitions of PIO_OFFSET, PIO_MASK &
PIO_RESERVED. Provide such definitions, select GENERIC_IOMAP & remove
arch/mips/lib/iomap.c to cut back on the needless duplication.
The one change this does make is to our mmio_{in,out}s[bwl] functions,
which began to deviate from their generic counterparts with commit
0845bb721ebb ("MIPS: iomap: Use __mem_{read,write}{b,w,l} for MMIO"). I
suspect that this commit was incorrect, and that the SEAD-3 platform
should have instead selected CONFIG_SWAP_IO_SPACE. Since the SEAD-3
platform code is now gone & the board is instead supported by the
generic platform (CONFIG_MIPS_GENERIC) which selects
CONFIG_SWAP_IO_SPACE anyway, this shouldn't be a problem any more.
Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/20342/
Cc: linux-mips@linux-mips.org
2018-08-29 21:54:00 +00:00
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select GENERIC_IOMAP
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2017-05-15 09:46:35 +00:00
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select GENERIC_IRQ_PROBE
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select GENERIC_IRQ_SHOW
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2018-11-15 19:05:37 +00:00
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select GENERIC_ISA_DMA if EISA
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2018-04-11 07:50:19 +00:00
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select GENERIC_LIB_ASHLDI3
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select GENERIC_LIB_ASHRDI3
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select GENERIC_LIB_CMPDI2
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select GENERIC_LIB_LSHRDI3
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select GENERIC_LIB_UCMPDI2
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2017-05-15 09:46:35 +00:00
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select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
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select GENERIC_SMP_IDLE_THREAD
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select GENERIC_TIME_VSYSCALL
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2019-07-12 03:56:52 +00:00
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select GUP_GET_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT
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2017-05-15 09:46:35 +00:00
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select HANDLE_DOMAIN_IRQ
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MIPS: Workaround GCC __builtin_unreachable reordering bug
Some versions of GCC for the MIPS architecture suffer from a bug which
can lead to instructions from beyond an unreachable statement being
incorrectly reordered into earlier branch delay slots if the unreachable
statement is the only content of a case in a switch statement. This can
lead to seemingly random behaviour, such as invalid memory accesses from
incorrectly reordered loads or stores, and link failures on microMIPS
builds.
See this potential GCC fix for details:
https://gcc.gnu.org/ml/gcc-patches/2015-09/msg00360.html
Runtime problems resulting from this bug were initially observed using a
maltasmvp_defconfig v4.4 kernel built using GCC 4.9.2 (from a Codescape
SDK 2015.06-05 toolchain), with the result being an address exception
taken after log messages about the L1 caches (during probe of the L2
cache):
Initmem setup node 0 [mem 0x0000000080000000-0x000000009fffffff]
VPE topology {2,2} total 4
Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
Primary data cache 64kB, 4-way, PIPT, no aliases, linesize 32 bytes
<AdEL exception here>
This is early enough that the kernel exception vectors are not in use,
so any further output depends upon the bootloader. This is reproducible
in QEMU where no further output occurs - ie. the system hangs here.
Given the nature of the bug it may potentially be hit with differing
symptoms. The bug is known to affect GCC versions as recent as 7.3, and
it is unclear whether GCC 8 fixed it or just happens not to encounter
the bug in the testcase found at the link above due to differing
optimizations.
This bug can be worked around by placing a volatile asm statement, which
GCC is prevented from reordering past, prior to the
__builtin_unreachable call.
That was actually done already for other reasons by commit 173a3efd3edb
("bug.h: work around GCC PR82365 in BUG()"), but creates problems for
microMIPS builds due to the lack of a .insn directive. The microMIPS ISA
allows for interlinking with regular MIPS32 code by repurposing bit 0 of
the program counter as an ISA mode bit. To switch modes one changes the
value of this bit in the PC. However typical branch instructions encode
their offsets as multiples of 2-byte instruction halfwords, which means
they cannot change ISA mode - this must be done using either an indirect
branch (a jump-register in MIPS terminology) or a dedicated jalx
instruction. In order to ensure that regular branches don't attempt to
target code in a different ISA which they can't actually switch to, the
linker will check that branch targets are code in the same ISA as the
branch.
Unfortunately our empty asm volatile statements don't qualify as code,
and the link for microMIPS builds fails with errors such as:
arch/mips/mm/dma-default.s:3265: Error: branch to a symbol in another ISA mode
arch/mips/mm/dma-default.s:5027: Error: branch to a symbol in another ISA mode
Resolve this by adding a .insn directive within the asm statement which
declares that what comes next is code. This may or may not be true,
since we don't really know what comes next, but as this code is in an
unreachable path anyway that doesn't matter since we won't execute it.
We do this in asm/compiler.h & select CONFIG_HAVE_ARCH_COMPILER_H in
order to have this included by linux/compiler_types.h after
linux/compiler-gcc.h. This will result in asm/compiler.h being included
in all C compilations via the -include linux/compiler_types.h argument
in c_flags, which should be harmless.
Signed-off-by: Paul Burton <paul.burton@mips.com>
Fixes: 173a3efd3edb ("bug.h: work around GCC PR82365 in BUG()")
Patchwork: https://patchwork.linux-mips.org/patch/20270/
Cc: James Hogan <jhogan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: linux-mips@linux-mips.org
2018-08-20 22:36:18 +00:00
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select HAVE_ARCH_COMPILER_H
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2017-05-15 09:46:35 +00:00
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select HAVE_ARCH_JUMP_LABEL
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2008-07-29 20:58:53 +00:00
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select HAVE_ARCH_KGDB
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2016-11-24 17:32:45 +00:00
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select HAVE_ARCH_MMAP_RND_BITS if MMU
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select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
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2014-01-22 14:40:04 +00:00
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select HAVE_ARCH_SECCOMP_FILTER
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2012-08-17 06:22:04 +00:00
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select HAVE_ARCH_TRACEHOOK
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2019-07-15 21:40:01 +00:00
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select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES
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2019-08-19 05:54:20 +00:00
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select HAVE_ASM_MODVERSIONS
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MIPS: BPF: Restore MIPS32 cBPF JIT
Commit 716850ab104d ("MIPS: eBPF: Initial eBPF support for MIPS32
architecture.") enabled our eBPF JIT for MIPS32 kernels, whereas it has
previously only been availailable for MIPS64. It was my understanding at
the time that the BPF test suite was passing & JITing a comparable
number of tests to our cBPF JIT [1], but it turns out that was not the
case.
The eBPF JIT has a number of problems on MIPS32:
- Most notably various code paths still result in emission of MIPS64
instructions which will cause reserved instruction exceptions & kernel
panics when run on MIPS32 CPUs.
- The eBPF JIT doesn't account for differences between the O32 ABI used
by MIPS32 kernels versus the N64 ABI used by MIPS64 kernels. Notably
arguments beyond the first 4 are passed on the stack in O32, and this
is entirely unhandled when JITing a BPF_CALL instruction. Stack space
must be reserved for arguments even if they all fit in registers, and
the callee is free to assume that stack space has been reserved for
its use - with the eBPF JIT this is not the case, so calling any
function can result in clobbering values on the stack & unpredictable
behaviour. Function arguments in eBPF are always 64-bit values which
is also entirely unhandled - the JIT still uses a single (32-bit)
register per argument. As a result all function arguments are always
passed incorrectly when JITing a BPF_CALL instruction, leading to
kernel crashes or strange behavior.
- The JIT attempts to bail our on use of ALU64 instructions or 64-bit
memory access instructions. The code doing this at the start of
build_one_insn() incorrectly checks whether BPF_OP() equals BPF_DW,
when it should really be checking BPF_SIZE() & only doing so when
BPF_CLASS() is one of BPF_{LD,LDX,ST,STX}. This results in false
positives that cause more bailouts than intended, and that in turns
hides some of the problems described above.
- The kernel's cBPF->eBPF translation makes heavy use of 64-bit eBPF
instructions that the MIPS32 eBPF JIT bails out on, leading to most
cBPF programs not being JITed at all.
Until these problems are resolved, revert the removal of the cBPF JIT
performed by commit 716850ab104d ("MIPS: eBPF: Initial eBPF support for
MIPS32 architecture."). Together with commit f8fffebdea75 ("MIPS: BPF:
Disable MIPS32 eBPF JIT") this restores MIPS32 BPF JIT behavior back to
the same state it was prior to the introduction of the broken eBPF JIT
support.
[1] https://lore.kernel.org/linux-mips/MWHPR2201MB13583388481F01A422CE7D66D4410@MWHPR2201MB1358.namprd22.prod.outlook.com/
Signed-off-by: Paul Burton <paulburton@kernel.org>
Fixes: 716850ab104d ("MIPS: eBPF: Initial eBPF support for MIPS32 architecture.")
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Hassan Naveed <hnaveed@wavecomp.com>
Cc: Tony Ambardar <itugrok@yahoo.com>
Cc: bpf@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
2019-12-05 18:23:18 +00:00
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select HAVE_CBPF_JIT if !64BIT && !CPU_MICROMIPS
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2017-05-15 09:46:35 +00:00
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select HAVE_CONTEXT_TRACKING
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2020-01-27 15:41:52 +00:00
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select HAVE_TIF_NOHZ
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2017-05-15 09:46:35 +00:00
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select HAVE_C_RECORDMCOUNT
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select HAVE_DEBUG_KMEMLEAK
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select HAVE_DEBUG_STACKOVERFLOW
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select HAVE_DMA_CONTIGUOUS
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MIPS: Tracing: Add dynamic function tracer support
With dynamic function tracer, by default, _mcount is defined as an
"empty" function, it returns directly without any more action . When
enabling it in user-space, it will jump to a real tracing
function(ftrace_caller), and do the real job for us.
Differ from the static function tracer, dynamic function tracer provides
two functions ftrace_make_call()/ftrace_make_nop() to enable/disable the
tracing of some indicated kernel functions(set_ftrace_filter).
In the -v4 version, the implementation of this support is basically the same as
X86 version does: _mcount is implemented as an empty function and ftrace_caller
is implemented as a real tracing function respectively.
But in this version, to support module tracing with the help of
-mlong-calls in arch/mips/Makefile:
MODFLAGS += -mlong-calls.
The stuff becomes a little more complex. We need to cope with two
different type of calling to _mcount.
For the kernel part, the calling to _mcount(result of "objdump -hdr
vmlinux"). is like this:
108: 03e0082d move at,ra
10c: 0c000000 jal 0 <fpcsr_pending>
10c: R_MIPS_26 _mcount
10c: R_MIPS_NONE *ABS*
10c: R_MIPS_NONE *ABS*
110: 00020021 nop
For the module with -mlong-calls, it looks like this:
c: 3c030000 lui v1,0x0
c: R_MIPS_HI16 _mcount
c: R_MIPS_NONE *ABS*
c: R_MIPS_NONE *ABS*
10: 64630000 daddiu v1,v1,0
10: R_MIPS_LO16 _mcount
10: R_MIPS_NONE *ABS*
10: R_MIPS_NONE *ABS*
14: 03e0082d move at,ra
18: 0060f809 jalr v1
In the kernel version, there is only one "_mcount" string for every
kernel function, so, we just need to match this one in mcount_regex of
scripts/recordmcount.pl, but in the module version, we need to choose
one of the two to match. Herein, I choose the first one with
"R_MIPS_HI16 _mcount".
and In the kernel verion, without module tracing support, we just need
to replace "jal _mcount" by "jal ftrace_caller" to do real tracing, and
filter the tracing of some kernel functions via replacing it by a nop
instruction.
but as we have described before, the instruction "jal ftrace_caller" only left
32bit length for the address of ftrace_caller, it will fail when calling from
the module space. so, herein, we must replace something else.
the basic idea is loading the address of ftrace_caller to v1 via changing these
two instructions:
lui v1,0x0
addiu v1,v1,0
If we want to enable the tracing, we need to replace the above instructions to:
lui v1, HI_16BIT_ftrace_caller
addiu v1, v1, LOW_16BIT_ftrace_caller
If we want to stop the tracing of the indicated kernel functions, we
just need to replace the "jalr v1" to a nop instruction. but we need to
replace two instructions and encode the above two instructions
oursevles.
Is there a simpler solution? Yes! Here it is, in this version, we put _mcount
and ftrace_caller together, which means the address of _mcount and
ftrace_caller is the same:
_mcount:
ftrace_caller:
j ftrace_stub
nop
...(do real tracing here)...
ftrace_stub:
jr ra
move ra, at
By default, the kernel functions call _mcount, and then jump to ftrace_stub and
return. and when we want to do real tracing, we just need to remove that "j
ftrace_stub", and it will run through the two "nop" instructions and then do
the real tracing job.
what about filtering job? we just need to do this:
lui v1, hi_16bit_of_mcount <--> b 1f (0x10000004)
addiu v1, v1, low_16bit_of_mcount
move at, ra
jalr v1
nop
1f: (rec->ip + 12)
In linux-mips64, there will be some local symbols, whose name are
prefixed by $L, which need to be filtered. thanks goes to Steven for
writing the mips64-specific function_regex.
In a conclusion, with RISC, things becomes easier with such a "stupid"
trick, RISC is something like K.I.S.S, and also, there are lots of
"simple" tricks in the whole ftrace support, thanks goes to Steven and
the other folks for providing such a wonderful tracing framework!
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: Nicholas Mc Guire <der.herr@hofr.at>
Cc: zhangfx@lemote.com
Cc: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/675/
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-20 12:34:32 +00:00
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select HAVE_DYNAMIC_FTRACE
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2020-01-22 10:58:51 +00:00
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|
|
select HAVE_EBPF_JIT if 64BIT && !CPU_MICROMIPS && TARGET_ISA_REV >= 2
|
2017-05-15 09:46:35 +00:00
|
|
|
select HAVE_EXIT_THREAD
|
2019-07-12 03:57:14 +00:00
|
|
|
select HAVE_FAST_GUP
|
MIPS: Tracing: Add dynamic function tracer support
With dynamic function tracer, by default, _mcount is defined as an
"empty" function, it returns directly without any more action . When
enabling it in user-space, it will jump to a real tracing
function(ftrace_caller), and do the real job for us.
Differ from the static function tracer, dynamic function tracer provides
two functions ftrace_make_call()/ftrace_make_nop() to enable/disable the
tracing of some indicated kernel functions(set_ftrace_filter).
In the -v4 version, the implementation of this support is basically the same as
X86 version does: _mcount is implemented as an empty function and ftrace_caller
is implemented as a real tracing function respectively.
But in this version, to support module tracing with the help of
-mlong-calls in arch/mips/Makefile:
MODFLAGS += -mlong-calls.
The stuff becomes a little more complex. We need to cope with two
different type of calling to _mcount.
For the kernel part, the calling to _mcount(result of "objdump -hdr
vmlinux"). is like this:
108: 03e0082d move at,ra
10c: 0c000000 jal 0 <fpcsr_pending>
10c: R_MIPS_26 _mcount
10c: R_MIPS_NONE *ABS*
10c: R_MIPS_NONE *ABS*
110: 00020021 nop
For the module with -mlong-calls, it looks like this:
c: 3c030000 lui v1,0x0
c: R_MIPS_HI16 _mcount
c: R_MIPS_NONE *ABS*
c: R_MIPS_NONE *ABS*
10: 64630000 daddiu v1,v1,0
10: R_MIPS_LO16 _mcount
10: R_MIPS_NONE *ABS*
10: R_MIPS_NONE *ABS*
14: 03e0082d move at,ra
18: 0060f809 jalr v1
In the kernel version, there is only one "_mcount" string for every
kernel function, so, we just need to match this one in mcount_regex of
scripts/recordmcount.pl, but in the module version, we need to choose
one of the two to match. Herein, I choose the first one with
"R_MIPS_HI16 _mcount".
and In the kernel verion, without module tracing support, we just need
to replace "jal _mcount" by "jal ftrace_caller" to do real tracing, and
filter the tracing of some kernel functions via replacing it by a nop
instruction.
but as we have described before, the instruction "jal ftrace_caller" only left
32bit length for the address of ftrace_caller, it will fail when calling from
the module space. so, herein, we must replace something else.
the basic idea is loading the address of ftrace_caller to v1 via changing these
two instructions:
lui v1,0x0
addiu v1,v1,0
If we want to enable the tracing, we need to replace the above instructions to:
lui v1, HI_16BIT_ftrace_caller
addiu v1, v1, LOW_16BIT_ftrace_caller
If we want to stop the tracing of the indicated kernel functions, we
just need to replace the "jalr v1" to a nop instruction. but we need to
replace two instructions and encode the above two instructions
oursevles.
Is there a simpler solution? Yes! Here it is, in this version, we put _mcount
and ftrace_caller together, which means the address of _mcount and
ftrace_caller is the same:
_mcount:
ftrace_caller:
j ftrace_stub
nop
...(do real tracing here)...
ftrace_stub:
jr ra
move ra, at
By default, the kernel functions call _mcount, and then jump to ftrace_stub and
return. and when we want to do real tracing, we just need to remove that "j
ftrace_stub", and it will run through the two "nop" instructions and then do
the real tracing job.
what about filtering job? we just need to do this:
lui v1, hi_16bit_of_mcount <--> b 1f (0x10000004)
addiu v1, v1, low_16bit_of_mcount
move at, ra
jalr v1
nop
1f: (rec->ip + 12)
In linux-mips64, there will be some local symbols, whose name are
prefixed by $L, which need to be filtered. thanks goes to Steven for
writing the mips64-specific function_regex.
In a conclusion, with RISC, things becomes easier with such a "stupid"
trick, RISC is something like K.I.S.S, and also, there are lots of
"simple" tricks in the whole ftrace support, thanks goes to Steven and
the other folks for providing such a wonderful tracing framework!
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: Nicholas Mc Guire <der.herr@hofr.at>
Cc: zhangfx@lemote.com
Cc: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/675/
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-20 12:34:32 +00:00
|
|
|
select HAVE_FTRACE_MCOUNT_RECORD
|
MIPS: Tracing: Add function graph tracer support for MIPS
The implementation of function graph tracer for MIPS is a little
different from X86.
in MIPS, gcc(with -pg) only transfer the caller's return address(at) and
the _mcount's return address(ra) to us.
For the kernel part without -mlong-calls:
move at, ra
jal _mcount
For the module part with -mlong-calls:
lui v1, hi16bit_of_mcount
addiu v1, v1, low16bit_of_mcount
move at, ra
jal _mcount
Without -mlong-calls,
if the function is a leaf, it will not save the return address(ra):
ffffffff80101298 <au1k_wait>:
ffffffff80101298: 67bdfff0 daddiu sp,sp,-16
ffffffff8010129c: ffbe0008 sd s8,8(sp)
ffffffff801012a0: 03a0f02d move s8,sp
ffffffff801012a4: 03e0082d move at,ra
ffffffff801012a8: 0c042930 jal ffffffff8010a4c0 <_mcount>
ffffffff801012ac: 00020021 nop
so, we can hijack it directly in _mcount, but if the function is non-leaf, the
return address is saved in the stack.
ffffffff80133030 <copy_process>:
ffffffff80133030: 67bdff50 daddiu sp,sp,-176
ffffffff80133034: ffbe00a0 sd s8,160(sp)
ffffffff80133038: 03a0f02d move s8,sp
ffffffff8013303c: ffbf00a8 sd ra,168(sp)
ffffffff80133040: ffb70098 sd s7,152(sp)
ffffffff80133044: ffb60090 sd s6,144(sp)
ffffffff80133048: ffb50088 sd s5,136(sp)
ffffffff8013304c: ffb40080 sd s4,128(sp)
ffffffff80133050: ffb30078 sd s3,120(sp)
ffffffff80133054: ffb20070 sd s2,112(sp)
ffffffff80133058: ffb10068 sd s1,104(sp)
ffffffff8013305c: ffb00060 sd s0,96(sp)
ffffffff80133060: 03e0082d move at,ra
ffffffff80133064: 0c042930 jal ffffffff8010a4c0 <_mcount>
ffffffff80133068: 00020021 nop
but we can not get the exact stack address(which saved ra) directly in
_mcount, we need to search the content of at register in the stack space
or search the "s{d,w} ra, offset(sp)" instruction in the text. 'Cause we
can not prove there is only a match in the stack space, so, we search
the text instead.
as we can see, if the first instruction above "move at, ra" is not a
store instruction, there should be a leaf function, so we hijack the at
register directly via putting &return_to_handler into it, otherwise, we
search the "s{d,w} ra, offset(sp)" instruction to get the stack offset,
and then the stack address. we use the above copy_process() as an
example, we at last find "ffbf00a8", 0xa8 is the stack offset, we plus
it with s8(fp), that is the stack address, we hijack the content via
writing the &return_to_handler in.
If with -mlong-calls, since there are two more instructions above "move
at, ra", so, we can move the pointer to the position above "lui v1,
hi16bit_of_mcount".
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Nicholas Mc Guire <der.herr@hofr.at>
Cc: zhangfx@lemote.com
Cc: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/677/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-11-20 12:34:34 +00:00
|
|
|
select HAVE_FUNCTION_GRAPH_TRACER
|
2017-05-15 09:46:35 +00:00
|
|
|
select HAVE_FUNCTION_TRACER
|
2020-01-22 10:58:51 +00:00
|
|
|
select HAVE_GCC_PLUGINS
|
|
|
|
select HAVE_GENERIC_VDSO
|
2017-05-15 09:46:35 +00:00
|
|
|
select HAVE_IDE
|
2018-10-30 01:27:41 +00:00
|
|
|
select HAVE_IOREMAP_PROT
|
2017-05-15 09:46:35 +00:00
|
|
|
select HAVE_IRQ_EXIT_ON_IRQ_STACK
|
|
|
|
select HAVE_IRQ_TIME_ACCOUNTING
|
2010-08-03 18:22:20 +00:00
|
|
|
select HAVE_KPROBES
|
|
|
|
select HAVE_KRETPROBES
|
2018-11-21 21:56:36 +00:00
|
|
|
select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
|
2012-09-28 05:01:03 +00:00
|
|
|
select HAVE_MOD_ARCH_SPECIFIC
|
2016-05-21 00:00:33 +00:00
|
|
|
select HAVE_NMI
|
2017-05-15 09:46:35 +00:00
|
|
|
select HAVE_OPROFILE
|
|
|
|
select HAVE_PERF_EVENTS
|
|
|
|
select HAVE_REGS_AND_STACK_ACCESS_API
|
2018-06-14 17:13:53 +00:00
|
|
|
select HAVE_RSEQ
|
2019-11-15 23:44:49 +00:00
|
|
|
select HAVE_SPARSE_SYSCALL_NR
|
2018-06-14 10:36:45 +00:00
|
|
|
select HAVE_STACKPROTECTOR
|
2017-05-15 09:46:35 +00:00
|
|
|
select HAVE_SYSCALL_TRACEPOINTS
|
2017-10-04 02:46:14 +00:00
|
|
|
select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
|
2017-05-15 09:46:35 +00:00
|
|
|
select IRQ_FORCED_THREADING
|
2018-11-15 19:05:37 +00:00
|
|
|
select ISA if EISA
|
2017-05-15 09:46:35 +00:00
|
|
|
select MODULES_USE_ELF_REL if MODULES
|
2020-01-22 10:58:51 +00:00
|
|
|
select MODULES_USE_ELF_RELA if MODULES && 64BIT
|
2017-05-15 09:46:35 +00:00
|
|
|
select PERF_USE_VMALLOC
|
2018-08-28 14:26:30 +00:00
|
|
|
select RTC_LIB
|
2015-01-21 10:54:46 +00:00
|
|
|
select SYSCTL_EXCEPTION_TRACE
|
2017-05-15 09:46:35 +00:00
|
|
|
select VIRT_TO_BUS
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2020-04-16 15:00:07 +00:00
|
|
|
config MIPS_FIXUP_BIGPHYS_ADDR
|
|
|
|
bool
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
menu "Machine selection"
|
|
|
|
|
2005-10-29 18:32:41 +00:00
|
|
|
choice
|
|
|
|
prompt "System type"
|
2016-12-14 15:09:42 +00:00
|
|
|
default MIPS_GENERIC
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2016-10-05 17:18:20 +00:00
|
|
|
config MIPS_GENERIC
|
|
|
|
bool "Generic board-agnostic MIPS kernel"
|
|
|
|
select BOOT_RAW
|
|
|
|
select BUILTIN_DTB
|
|
|
|
select CEVT_R4K
|
|
|
|
select CLKSRC_MIPS_GIC
|
|
|
|
select COMMON_CLK
|
|
|
|
select CPU_MIPSR2_IRQ_EI
|
2020-01-22 10:58:51 +00:00
|
|
|
select CPU_MIPSR2_IRQ_VI
|
2016-10-05 17:18:20 +00:00
|
|
|
select CSRC_R4K
|
|
|
|
select DMA_PERDEV_COHERENT
|
2018-11-15 19:05:32 +00:00
|
|
|
select HAVE_PCI
|
2016-10-05 17:18:20 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2018-07-28 01:23:21 +00:00
|
|
|
select MIPS_AUTO_PFN_OFFSET
|
2016-10-05 17:18:20 +00:00
|
|
|
select MIPS_CPU_SCACHE
|
|
|
|
select MIPS_GIC
|
|
|
|
select MIPS_L1_CACHE_SHIFT_7
|
|
|
|
select NO_EXCEPT_FILL
|
|
|
|
select PCI_DRIVERS_GENERIC
|
|
|
|
select SMP_UP if SMP
|
2017-01-23 14:08:13 +00:00
|
|
|
select SWAP_IO_SPACE
|
2016-10-05 17:18:20 +00:00
|
|
|
select SYS_HAS_CPU_MIPS32_R1
|
|
|
|
select SYS_HAS_CPU_MIPS32_R2
|
|
|
|
select SYS_HAS_CPU_MIPS32_R6
|
|
|
|
select SYS_HAS_CPU_MIPS64_R1
|
|
|
|
select SYS_HAS_CPU_MIPS64_R2
|
|
|
|
select SYS_HAS_CPU_MIPS64_R6
|
|
|
|
select SYS_SUPPORTS_32BIT_KERNEL
|
|
|
|
select SYS_SUPPORTS_64BIT_KERNEL
|
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
|
|
|
select SYS_SUPPORTS_HIGHMEM
|
|
|
|
select SYS_SUPPORTS_LITTLE_ENDIAN
|
|
|
|
select SYS_SUPPORTS_MICROMIPS
|
|
|
|
select SYS_SUPPORTS_MIPS16
|
2020-01-22 10:58:51 +00:00
|
|
|
select SYS_SUPPORTS_MIPS_CPS
|
2016-10-05 17:18:20 +00:00
|
|
|
select SYS_SUPPORTS_MULTITHREADING
|
|
|
|
select SYS_SUPPORTS_RELOCATABLE
|
|
|
|
select SYS_SUPPORTS_SMARTMIPS
|
2020-01-22 10:58:51 +00:00
|
|
|
select UHI_BOOT
|
2018-01-17 18:56:38 +00:00
|
|
|
select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
|
|
|
|
select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
|
|
|
|
select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
|
|
|
|
select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
|
|
|
|
select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
|
|
|
|
select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
|
2016-10-05 17:18:20 +00:00
|
|
|
select USE_OF
|
|
|
|
help
|
|
|
|
Select this to build a kernel which aims to support multiple boards,
|
|
|
|
generally using a flattened device tree passed from the bootloader
|
|
|
|
using the boot protocol defined in the UHI (Unified Hosting
|
|
|
|
Interface) specification.
|
|
|
|
|
2010-07-15 19:45:04 +00:00
|
|
|
config MIPS_ALCHEMY
|
2007-05-11 11:44:30 +00:00
|
|
|
bool "Alchemy processor based machines"
|
2018-04-03 14:24:20 +00:00
|
|
|
select PHYS_ADDR_T_64BIT
|
2012-11-30 16:27:27 +00:00
|
|
|
select CEVT_R4K
|
2012-11-15 05:34:17 +00:00
|
|
|
select CSRC_R4K
|
2015-05-26 16:20:06 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2014-02-20 13:59:23 +00:00
|
|
|
select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
|
2020-04-16 15:00:07 +00:00
|
|
|
select MIPS_FIXUP_BIGPHYS_ADDR if PCI
|
2010-07-15 19:45:04 +00:00
|
|
|
select SYS_HAS_CPU_MIPS32_R1
|
|
|
|
select SYS_SUPPORTS_32BIT_KERNEL
|
|
|
|
select SYS_SUPPORTS_APM_EMULATION
|
2016-04-19 09:23:22 +00:00
|
|
|
select GPIOLIB
|
2009-10-14 10:12:16 +00:00
|
|
|
select SYS_SUPPORTS_ZBOOT
|
2014-07-23 14:36:48 +00:00
|
|
|
select COMMON_CLK
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2009-06-24 09:12:57 +00:00
|
|
|
config AR7
|
|
|
|
bool "Texas Instruments AR7"
|
|
|
|
select BOOT_ELF32
|
|
|
|
select DMA_NONCOHERENT
|
|
|
|
select CEVT_R4K
|
|
|
|
select CSRC_R4K
|
2015-05-26 16:20:06 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2009-06-24 09:12:57 +00:00
|
|
|
select NO_EXCEPT_FILL
|
|
|
|
select SWAP_IO_SPACE
|
|
|
|
select SYS_HAS_CPU_MIPS32_R1
|
|
|
|
select SYS_HAS_EARLY_PRINTK
|
|
|
|
select SYS_SUPPORTS_32BIT_KERNEL
|
|
|
|
select SYS_SUPPORTS_LITTLE_ENDIAN
|
2014-04-28 23:49:24 +00:00
|
|
|
select SYS_SUPPORTS_MIPS16
|
2009-10-14 10:12:16 +00:00
|
|
|
select SYS_SUPPORTS_ZBOOT_UART16550
|
2016-04-19 09:23:22 +00:00
|
|
|
select GPIOLIB
|
2009-06-24 09:12:57 +00:00
|
|
|
select VLYNQ
|
2020-04-09 06:44:13 +00:00
|
|
|
select HAVE_LEGACY_CLK
|
2009-06-24 09:12:57 +00:00
|
|
|
help
|
|
|
|
Support for the Texas Instruments AR7 System-on-a-Chip
|
|
|
|
family: TNETD7100, 7200 and 7300.
|
|
|
|
|
2014-10-28 23:18:38 +00:00
|
|
|
config ATH25
|
|
|
|
bool "Atheros AR231x/AR531x SoC support"
|
|
|
|
select CEVT_R4K
|
|
|
|
select CSRC_R4K
|
|
|
|
select DMA_NONCOHERENT
|
2015-05-26 16:20:06 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2014-10-28 23:18:41 +00:00
|
|
|
select IRQ_DOMAIN
|
2014-10-28 23:18:38 +00:00
|
|
|
select SYS_HAS_CPU_MIPS32_R1
|
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
|
|
|
select SYS_SUPPORTS_32BIT_KERNEL
|
2014-10-28 23:18:42 +00:00
|
|
|
select SYS_HAS_EARLY_PRINTK
|
2014-10-28 23:18:38 +00:00
|
|
|
help
|
|
|
|
Support for Atheros AR231x and Atheros AR531x based boards
|
|
|
|
|
2011-01-04 20:28:14 +00:00
|
|
|
config ATH79
|
|
|
|
bool "Atheros AR71XX/AR724X/AR913X based boards"
|
2015-08-03 17:23:52 +00:00
|
|
|
select ARCH_HAS_RESET_CONTROLLER
|
2011-01-04 20:28:14 +00:00
|
|
|
select BOOT_RAW
|
|
|
|
select CEVT_R4K
|
|
|
|
select CSRC_R4K
|
|
|
|
select DMA_NONCOHERENT
|
2016-04-19 09:23:22 +00:00
|
|
|
select GPIOLIB
|
2018-07-20 11:58:20 +00:00
|
|
|
select PINCTRL
|
2015-04-19 12:30:04 +00:00
|
|
|
select COMMON_CLK
|
2015-05-26 16:20:06 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2011-01-04 20:28:14 +00:00
|
|
|
select SYS_HAS_CPU_MIPS32_R2
|
|
|
|
select SYS_HAS_EARLY_PRINTK
|
|
|
|
select SYS_SUPPORTS_32BIT_KERNEL
|
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
2014-04-28 23:49:24 +00:00
|
|
|
select SYS_SUPPORTS_MIPS16
|
2016-01-26 08:38:29 +00:00
|
|
|
select SYS_SUPPORTS_ZBOOT_UART_PROM
|
2015-05-30 23:52:25 +00:00
|
|
|
select USE_OF
|
2018-03-24 22:47:22 +00:00
|
|
|
select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
|
2011-01-04 20:28:14 +00:00
|
|
|
help
|
|
|
|
Support for the Atheros AR71XX/AR724X/AR913X SoCs.
|
|
|
|
|
2014-12-25 17:49:00 +00:00
|
|
|
config BMIPS_GENERIC
|
|
|
|
bool "Broadcom Generic BMIPS kernel"
|
2018-06-15 11:08:52 +00:00
|
|
|
select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
|
|
|
|
select ARCH_HAS_PHYS_TO_DMA
|
2014-10-21 04:28:05 +00:00
|
|
|
select BOOT_RAW
|
|
|
|
select NO_EXCEPT_FILL
|
|
|
|
select USE_OF
|
|
|
|
select CEVT_R4K
|
|
|
|
select CSRC_R4K
|
|
|
|
select SYNC_R4K
|
|
|
|
select COMMON_CLK
|
2015-11-22 14:30:14 +00:00
|
|
|
select BCM6345_L1_IRQ
|
2014-12-25 17:49:17 +00:00
|
|
|
select BCM7038_L1_IRQ
|
|
|
|
select BCM7120_L2_IRQ
|
|
|
|
select BRCMSTB_L2_IRQ
|
2015-05-26 16:20:06 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2014-12-25 17:49:17 +00:00
|
|
|
select DMA_NONCOHERENT
|
2014-10-21 04:28:05 +00:00
|
|
|
select SYS_SUPPORTS_32BIT_KERNEL
|
2014-12-25 17:49:17 +00:00
|
|
|
select SYS_SUPPORTS_LITTLE_ENDIAN
|
2014-10-21 04:28:05 +00:00
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
|
|
|
select SYS_SUPPORTS_HIGHMEM
|
2014-12-25 17:49:17 +00:00
|
|
|
select SYS_HAS_CPU_BMIPS32_3300
|
|
|
|
select SYS_HAS_CPU_BMIPS4350
|
|
|
|
select SYS_HAS_CPU_BMIPS4380
|
2014-10-21 04:28:05 +00:00
|
|
|
select SYS_HAS_CPU_BMIPS5000
|
|
|
|
select SWAP_IO_SPACE
|
2014-12-25 17:49:17 +00:00
|
|
|
select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
|
|
|
|
select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
|
|
|
|
select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
|
|
|
|
select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
|
2017-05-24 17:55:16 +00:00
|
|
|
select HARDIRQS_SW_RESEND
|
2014-10-21 04:28:05 +00:00
|
|
|
help
|
2014-12-25 17:49:00 +00:00
|
|
|
Build a generic DT-based kernel image that boots on select
|
|
|
|
BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
|
|
|
|
box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
|
|
|
|
must be set appropriately for your board.
|
2014-10-21 04:28:05 +00:00
|
|
|
|
2007-09-25 13:40:12 +00:00
|
|
|
config BCM47XX
|
2010-03-25 10:42:41 +00:00
|
|
|
bool "Broadcom BCM47XX based boards"
|
2012-12-26 20:06:17 +00:00
|
|
|
select BOOT_RAW
|
2007-10-18 16:48:11 +00:00
|
|
|
select CEVT_R4K
|
2007-11-24 22:33:28 +00:00
|
|
|
select CSRC_R4K
|
2007-09-25 13:40:12 +00:00
|
|
|
select DMA_NONCOHERENT
|
2018-11-15 19:05:32 +00:00
|
|
|
select HAVE_PCI
|
2015-05-26 16:20:06 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2013-07-23 14:40:37 +00:00
|
|
|
select SYS_HAS_CPU_MIPS32_R1
|
2012-12-26 20:06:18 +00:00
|
|
|
select NO_EXCEPT_FILL
|
2007-09-25 13:40:12 +00:00
|
|
|
select SYS_SUPPORTS_32BIT_KERNEL
|
|
|
|
select SYS_SUPPORTS_LITTLE_ENDIAN
|
2014-04-28 23:49:24 +00:00
|
|
|
select SYS_SUPPORTS_MIPS16
|
2018-01-16 22:21:44 +00:00
|
|
|
select SYS_SUPPORTS_ZBOOT
|
2007-09-25 13:41:24 +00:00
|
|
|
select SYS_HAS_EARLY_PRINTK
|
2014-03-26 20:40:25 +00:00
|
|
|
select USE_GENERIC_EARLY_PRINTK_8250
|
2014-06-17 14:36:50 +00:00
|
|
|
select GPIOLIB
|
|
|
|
select LEDS_GPIO_REGISTER
|
2015-06-10 21:05:08 +00:00
|
|
|
select BCM47XX_NVRAM
|
2016-01-25 08:50:29 +00:00
|
|
|
select BCM47XX_SPROM
|
2017-11-14 17:16:27 +00:00
|
|
|
select BCM47XX_SSB if !BCM47XX_BCMA
|
2007-09-25 13:40:12 +00:00
|
|
|
help
|
2019-03-11 15:54:27 +00:00
|
|
|
Support for BCM47XX based boards
|
2007-09-25 13:40:12 +00:00
|
|
|
|
2009-08-18 12:23:37 +00:00
|
|
|
config BCM63XX
|
|
|
|
bool "Broadcom BCM63XX based boards"
|
2013-06-18 16:55:39 +00:00
|
|
|
select BOOT_RAW
|
2009-08-18 12:23:37 +00:00
|
|
|
select CEVT_R4K
|
|
|
|
select CSRC_R4K
|
2014-07-08 14:26:13 +00:00
|
|
|
select SYNC_R4K
|
2009-08-18 12:23:37 +00:00
|
|
|
select DMA_NONCOHERENT
|
2015-05-26 16:20:06 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2009-08-18 12:23:37 +00:00
|
|
|
select SYS_SUPPORTS_32BIT_KERNEL
|
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
|
|
|
select SYS_HAS_EARLY_PRINTK
|
|
|
|
select SWAP_IO_SPACE
|
2016-04-19 09:23:22 +00:00
|
|
|
select GPIOLIB
|
2014-01-14 17:54:40 +00:00
|
|
|
select MIPS_L1_CACHE_SHIFT_4
|
2017-09-20 11:14:01 +00:00
|
|
|
select CLKDEV_LOOKUP
|
2020-04-09 06:44:13 +00:00
|
|
|
select HAVE_LEGACY_CLK
|
2009-08-18 12:23:37 +00:00
|
|
|
help
|
2019-03-11 15:54:27 +00:00
|
|
|
Support for BCM63XX based boards
|
2009-08-18 12:23:37 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config MIPS_COBALT
|
2006-05-09 21:34:53 +00:00
|
|
|
bool "Cobalt Server"
|
2007-10-18 16:48:11 +00:00
|
|
|
select CEVT_R4K
|
2007-11-24 22:33:28 +00:00
|
|
|
select CSRC_R4K
|
2007-10-22 10:43:15 +00:00
|
|
|
select CEVT_GT641XX
|
2005-04-16 22:20:36 +00:00
|
|
|
select DMA_NONCOHERENT
|
2018-11-15 19:05:32 +00:00
|
|
|
select FORCE_PCI
|
2007-10-11 22:46:10 +00:00
|
|
|
select I8253
|
2005-04-16 22:20:36 +00:00
|
|
|
select I8259
|
2015-05-26 16:20:06 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2007-09-13 14:51:26 +00:00
|
|
|
select IRQ_GT641XX
|
2007-03-14 12:51:26 +00:00
|
|
|
select PCI_GT64XXX_PCI0
|
2005-10-20 21:33:09 +00:00
|
|
|
select SYS_HAS_CPU_NEVADA
|
2007-03-02 03:42:33 +00:00
|
|
|
select SYS_HAS_EARLY_PRINTK
|
2005-09-03 22:56:21 +00:00
|
|
|
select SYS_SUPPORTS_32BIT_KERNEL
|
2008-01-15 18:42:57 +00:00
|
|
|
select SYS_SUPPORTS_64BIT_KERNEL
|
2005-10-29 18:32:41 +00:00
|
|
|
select SYS_SUPPORTS_LITTLE_ENDIAN
|
2014-03-26 20:40:25 +00:00
|
|
|
select USE_GENERIC_EARLY_PRINTK_8250
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
config MACH_DECSTATION
|
2006-05-09 21:34:53 +00:00
|
|
|
bool "DECstations"
|
2005-04-16 22:20:36 +00:00
|
|
|
select BOOT_ELF32
|
2008-04-25 03:11:44 +00:00
|
|
|
select CEVT_DS1287
|
2014-04-06 20:46:05 +00:00
|
|
|
select CEVT_R4K if CPU_R4X00
|
2008-04-24 00:48:40 +00:00
|
|
|
select CSRC_IOASIC
|
2014-04-06 20:46:05 +00:00
|
|
|
select CSRC_R4K if CPU_R4X00
|
2007-10-23 11:43:11 +00:00
|
|
|
select CPU_DADDI_WORKAROUNDS if 64BIT
|
|
|
|
select CPU_R4000_WORKAROUNDS if 64BIT
|
|
|
|
select CPU_R4400_WORKAROUNDS if 64BIT
|
2005-04-16 22:20:36 +00:00
|
|
|
select DMA_NONCOHERENT
|
2014-04-07 22:39:19 +00:00
|
|
|
select NO_IOPORT_MAP
|
2015-05-26 16:20:06 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2005-10-20 21:33:09 +00:00
|
|
|
select SYS_HAS_CPU_R3000
|
|
|
|
select SYS_HAS_CPU_R4X00
|
2005-09-03 22:56:21 +00:00
|
|
|
select SYS_SUPPORTS_32BIT_KERNEL
|
2013-01-17 02:53:19 +00:00
|
|
|
select SYS_SUPPORTS_64BIT_KERNEL
|
2005-10-29 18:32:41 +00:00
|
|
|
select SYS_SUPPORTS_LITTLE_ENDIAN
|
2006-06-19 15:19:13 +00:00
|
|
|
select SYS_SUPPORTS_128HZ
|
|
|
|
select SYS_SUPPORTS_256HZ
|
|
|
|
select SYS_SUPPORTS_1024HZ
|
2014-01-14 17:54:38 +00:00
|
|
|
select MIPS_L1_CACHE_SHIFT_4
|
2005-10-29 18:32:41 +00:00
|
|
|
help
|
2005-04-16 22:20:36 +00:00
|
|
|
This enables support for DEC's MIPS based workstations. For details
|
|
|
|
see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
|
|
|
|
DECstation porting pages on <http://decstation.unix-ag.org/>.
|
|
|
|
|
|
|
|
If you have one of the following DECstation Models you definitely
|
|
|
|
want to choose R4xx0 for the CPU Type:
|
|
|
|
|
2007-08-29 13:21:45 +00:00
|
|
|
DECstation 5000/50
|
|
|
|
DECstation 5000/150
|
|
|
|
DECstation 5000/260
|
|
|
|
DECsystem 5900/260
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
otherwise choose R3000.
|
|
|
|
|
2005-10-29 18:32:41 +00:00
|
|
|
config MACH_JAZZ
|
2006-05-09 21:34:53 +00:00
|
|
|
bool "Jazz family of machines"
|
2019-10-09 13:27:14 +00:00
|
|
|
select ARC_MEMORY
|
|
|
|
select ARC_PROMLIB
|
2018-02-05 14:37:43 +00:00
|
|
|
select ARCH_MIGHT_HAVE_PC_PARPORT
|
2018-02-05 15:40:00 +00:00
|
|
|
select ARCH_MIGHT_HAVE_PC_SERIO
|
2020-07-08 07:30:00 +00:00
|
|
|
select DMA_OPS
|
2012-11-15 19:48:50 +00:00
|
|
|
select FW_ARC
|
|
|
|
select FW_ARC32
|
2005-10-29 18:32:41 +00:00
|
|
|
select ARCH_MAY_HAVE_PC_FDC
|
2007-10-18 16:48:11 +00:00
|
|
|
select CEVT_R4K
|
2007-11-24 22:33:28 +00:00
|
|
|
select CSRC_R4K
|
2007-12-02 12:00:32 +00:00
|
|
|
select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
|
2005-10-29 18:32:41 +00:00
|
|
|
select GENERIC_ISA_DMA
|
2011-06-01 18:05:10 +00:00
|
|
|
select HAVE_PCSPKR_PLATFORM
|
2015-05-26 16:20:06 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2007-10-11 22:46:10 +00:00
|
|
|
select I8253
|
2005-10-29 18:32:41 +00:00
|
|
|
select I8259
|
|
|
|
select ISA
|
2005-10-20 21:33:09 +00:00
|
|
|
select SYS_HAS_CPU_R4X00
|
2005-10-29 18:32:41 +00:00
|
|
|
select SYS_SUPPORTS_32BIT_KERNEL
|
2013-01-17 02:53:19 +00:00
|
|
|
select SYS_SUPPORTS_64BIT_KERNEL
|
2006-06-19 15:19:13 +00:00
|
|
|
select SYS_SUPPORTS_100HZ
|
2005-04-16 22:20:36 +00:00
|
|
|
help
|
2019-03-11 15:54:27 +00:00
|
|
|
This a family of machines based on the MIPS R4030 chipset which was
|
|
|
|
used by several vendors to build RISC/os and Windows NT workstations.
|
|
|
|
Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
|
|
|
|
Olivetti M700-10 workstations.
|
2005-10-29 18:32:41 +00:00
|
|
|
|
2015-05-24 15:11:13 +00:00
|
|
|
config MACH_INGENIC
|
|
|
|
bool "Ingenic SoC based machines"
|
2010-06-19 04:08:19 +00:00
|
|
|
select SYS_SUPPORTS_32BIT_KERNEL
|
|
|
|
select SYS_SUPPORTS_LITTLE_ENDIAN
|
2012-03-30 14:48:05 +00:00
|
|
|
select SYS_SUPPORTS_ZBOOT_UART16550
|
2019-07-15 21:40:02 +00:00
|
|
|
select CPU_SUPPORTS_HUGEPAGES
|
2010-06-19 04:08:19 +00:00
|
|
|
select DMA_NONCOHERENT
|
2015-05-26 16:20:06 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2017-05-12 16:52:58 +00:00
|
|
|
select PINCTRL
|
2016-04-19 09:23:22 +00:00
|
|
|
select GPIOLIB
|
2015-05-24 15:11:36 +00:00
|
|
|
select COMMON_CLK
|
2011-09-24 00:29:46 +00:00
|
|
|
select GENERIC_IRQ_CHIP
|
2019-02-21 22:43:10 +00:00
|
|
|
select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
|
2015-05-24 15:11:15 +00:00
|
|
|
select USE_OF
|
2010-06-19 04:08:19 +00:00
|
|
|
|
2011-03-30 07:27:47 +00:00
|
|
|
config LANTIQ
|
|
|
|
bool "Lantiq based platforms"
|
|
|
|
select DMA_NONCOHERENT
|
2015-05-26 16:20:06 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2011-03-30 07:27:47 +00:00
|
|
|
select CEVT_R4K
|
|
|
|
select CSRC_R4K
|
|
|
|
select SYS_HAS_CPU_MIPS32_R1
|
|
|
|
select SYS_HAS_CPU_MIPS32_R2
|
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
|
|
|
select SYS_SUPPORTS_32BIT_KERNEL
|
2014-04-28 23:49:24 +00:00
|
|
|
select SYS_SUPPORTS_MIPS16
|
2011-03-30 07:27:47 +00:00
|
|
|
select SYS_SUPPORTS_MULTITHREADING
|
2018-01-15 20:54:35 +00:00
|
|
|
select SYS_SUPPORTS_VPE_LOADER
|
2011-03-30 07:27:47 +00:00
|
|
|
select SYS_HAS_EARLY_PRINTK
|
2016-04-19 09:23:22 +00:00
|
|
|
select GPIOLIB
|
2011-03-30 07:27:47 +00:00
|
|
|
select SWAP_IO_SPACE
|
|
|
|
select BOOT_RAW
|
2012-04-17 13:53:19 +00:00
|
|
|
select CLKDEV_LOOKUP
|
2020-04-09 06:44:13 +00:00
|
|
|
select HAVE_LEGACY_CLK
|
2012-04-13 18:56:13 +00:00
|
|
|
select USE_OF
|
2012-08-28 10:44:59 +00:00
|
|
|
select PINCTRL
|
|
|
|
select PINCTRL_LANTIQ
|
2013-09-03 11:18:12 +00:00
|
|
|
select ARCH_HAS_RESET_CONTROLLER
|
|
|
|
select RESET_CONTROLLER
|
2011-03-30 07:27:47 +00:00
|
|
|
|
2015-04-21 02:00:35 +00:00
|
|
|
config MACH_LOONGSON32
|
MIPS: Loongson: Unify LOONGSON3/LOONGSON64 Kconfig usage
There are mixed LOONGSON3/LOONGSON64 usages in recently changes, let's
establish some rules:
1, In Kconfig symbols, we only use CPU_LOONGSON64, MACH_LOONGSON64 and
SYS_HAS_CPU_LOONGSON64, all other derived symbols use "LOONGSON3" since
they all not widely-used symbols and sometimes not suitable for all
64-bit Loongson processors. E.g., we use symbols LOONGSON3_ENHANCEMENT,
CPU_LOONGSON3_WORKAROUNDS, etc.
2, Hide GSx64/GSx64E in Kconfig title since it is not useful for
general users. However, in the full description we use a more detailed
manner. E.g., GS264/GS464/GS464E/GS464V.
All Kconfig titles and descriptions of Loongson processors and machines
have also been updated in this patch for consistency.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@linux-mips.org
Cc: linux-mips@vger.kernel.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: Huacai Chen <chenhuacai@gmail.com>
2019-11-04 06:11:21 +00:00
|
|
|
bool "Loongson 32-bit family of machines"
|
2010-01-04 09:16:46 +00:00
|
|
|
select SYS_SUPPORTS_ZBOOT
|
2007-07-27 06:25:43 +00:00
|
|
|
help
|
2015-04-21 02:00:35 +00:00
|
|
|
This enables support for the Loongson-1 family of machines.
|
2009-07-02 15:26:45 +00:00
|
|
|
|
2015-04-21 02:00:35 +00:00
|
|
|
Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
|
|
|
|
the Institute of Computing Technology (ICT), Chinese Academy of
|
|
|
|
Sciences (CAS).
|
2007-07-27 06:25:43 +00:00
|
|
|
|
2019-10-20 14:43:14 +00:00
|
|
|
config MACH_LOONGSON2EF
|
|
|
|
bool "Loongson-2E/F family of machines"
|
2012-07-25 14:17:24 +00:00
|
|
|
select SYS_SUPPORTS_ZBOOT
|
|
|
|
help
|
2019-10-20 14:43:14 +00:00
|
|
|
This enables the support of early Loongson-2E/F family of machines.
|
2012-07-25 14:17:24 +00:00
|
|
|
|
2019-10-20 14:43:14 +00:00
|
|
|
config MACH_LOONGSON64
|
MIPS: Loongson: Unify LOONGSON3/LOONGSON64 Kconfig usage
There are mixed LOONGSON3/LOONGSON64 usages in recently changes, let's
establish some rules:
1, In Kconfig symbols, we only use CPU_LOONGSON64, MACH_LOONGSON64 and
SYS_HAS_CPU_LOONGSON64, all other derived symbols use "LOONGSON3" since
they all not widely-used symbols and sometimes not suitable for all
64-bit Loongson processors. E.g., we use symbols LOONGSON3_ENHANCEMENT,
CPU_LOONGSON3_WORKAROUNDS, etc.
2, Hide GSx64/GSx64E in Kconfig title since it is not useful for
general users. However, in the full description we use a more detailed
manner. E.g., GS264/GS464/GS464E/GS464V.
All Kconfig titles and descriptions of Loongson processors and machines
have also been updated in this patch for consistency.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@linux-mips.org
Cc: linux-mips@vger.kernel.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: Huacai Chen <chenhuacai@gmail.com>
2019-11-04 06:11:21 +00:00
|
|
|
bool "Loongson 64-bit family of machines"
|
2019-10-20 15:01:36 +00:00
|
|
|
select ARCH_SPARSEMEM_ENABLE
|
|
|
|
select ARCH_MIGHT_HAVE_PC_PARPORT
|
|
|
|
select ARCH_MIGHT_HAVE_PC_SERIO
|
|
|
|
select GENERIC_ISA_DMA_SUPPORT_BROKEN
|
|
|
|
select BOOT_ELF32
|
|
|
|
select BOARD_SCACHE
|
|
|
|
select CSRC_R4K
|
|
|
|
select CEVT_R4K
|
|
|
|
select CPU_HAS_WB
|
|
|
|
select FORCE_PCI
|
|
|
|
select ISA
|
|
|
|
select I8259
|
|
|
|
select IRQ_MIPS_CPU
|
2020-05-27 06:34:34 +00:00
|
|
|
select NO_EXCEPT_FILL
|
2020-03-31 07:00:06 +00:00
|
|
|
select NR_CPUS_DEFAULT_64
|
2019-10-20 15:01:36 +00:00
|
|
|
select USE_GENERIC_EARLY_PRINTK_8250
|
2020-05-26 09:21:16 +00:00
|
|
|
select PCI_DRIVERS_GENERIC
|
2019-10-20 15:01:36 +00:00
|
|
|
select SYS_HAS_CPU_LOONGSON64
|
|
|
|
select SYS_HAS_EARLY_PRINTK
|
|
|
|
select SYS_SUPPORTS_SMP
|
|
|
|
select SYS_SUPPORTS_HOTPLUG_CPU
|
|
|
|
select SYS_SUPPORTS_NUMA
|
|
|
|
select SYS_SUPPORTS_64BIT_KERNEL
|
|
|
|
select SYS_SUPPORTS_HIGHMEM
|
|
|
|
select SYS_SUPPORTS_LITTLE_ENDIAN
|
2019-10-20 14:43:14 +00:00
|
|
|
select SYS_SUPPORTS_ZBOOT
|
2019-10-20 15:01:36 +00:00
|
|
|
select ZONE_DMA32
|
|
|
|
select NUMA
|
2020-03-25 03:55:02 +00:00
|
|
|
select COMMON_CLK
|
|
|
|
select USE_OF
|
|
|
|
select BUILTIN_DTB
|
2020-07-29 06:58:37 +00:00
|
|
|
select PCI_HOST_GENERIC
|
2019-10-20 14:43:14 +00:00
|
|
|
help
|
MIPS: Loongson: Unify LOONGSON3/LOONGSON64 Kconfig usage
There are mixed LOONGSON3/LOONGSON64 usages in recently changes, let's
establish some rules:
1, In Kconfig symbols, we only use CPU_LOONGSON64, MACH_LOONGSON64 and
SYS_HAS_CPU_LOONGSON64, all other derived symbols use "LOONGSON3" since
they all not widely-used symbols and sometimes not suitable for all
64-bit Loongson processors. E.g., we use symbols LOONGSON3_ENHANCEMENT,
CPU_LOONGSON3_WORKAROUNDS, etc.
2, Hide GSx64/GSx64E in Kconfig title since it is not useful for
general users. However, in the full description we use a more detailed
manner. E.g., GS264/GS464/GS464E/GS464V.
All Kconfig titles and descriptions of Loongson processors and machines
have also been updated in this patch for consistency.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@linux-mips.org
Cc: linux-mips@vger.kernel.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: Huacai Chen <chenhuacai@gmail.com>
2019-11-04 06:11:21 +00:00
|
|
|
This enables the support of Loongson-2/3 family of machines.
|
|
|
|
|
|
|
|
Loongson-2 and Loongson-3 are 64-bit general-purpose processors with
|
|
|
|
GS264/GS464/GS464E/GS464V microarchitecture (except old Loongson-2E
|
|
|
|
and Loongson-2F which will be removed), developed by the Institute
|
|
|
|
of Computing Technology (ICT), Chinese Academy of Sciences (CAS).
|
2012-07-25 14:17:24 +00:00
|
|
|
|
2015-03-16 21:43:10 +00:00
|
|
|
config MACH_PISTACHIO
|
|
|
|
bool "IMG Pistachio SoC based boards"
|
|
|
|
select BOOT_ELF32
|
|
|
|
select BOOT_RAW
|
|
|
|
select CEVT_R4K
|
|
|
|
select CLKSRC_MIPS_GIC
|
|
|
|
select COMMON_CLK
|
|
|
|
select CSRC_R4K
|
2016-06-03 08:35:00 +00:00
|
|
|
select DMA_NONCOHERENT
|
2016-04-19 09:23:22 +00:00
|
|
|
select GPIOLIB
|
2015-05-26 16:20:06 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2015-03-16 21:43:10 +00:00
|
|
|
select MFD_SYSCON
|
|
|
|
select MIPS_CPU_SCACHE
|
|
|
|
select MIPS_GIC
|
|
|
|
select PINCTRL
|
|
|
|
select REGULATOR
|
|
|
|
select SYS_HAS_CPU_MIPS32_R2
|
|
|
|
select SYS_SUPPORTS_32BIT_KERNEL
|
|
|
|
select SYS_SUPPORTS_LITTLE_ENDIAN
|
|
|
|
select SYS_SUPPORTS_MIPS_CPS
|
|
|
|
select SYS_SUPPORTS_MULTITHREADING
|
2016-05-25 11:58:40 +00:00
|
|
|
select SYS_SUPPORTS_RELOCATABLE
|
2015-03-16 21:43:10 +00:00
|
|
|
select SYS_SUPPORTS_ZBOOT
|
2015-04-28 22:08:35 +00:00
|
|
|
select SYS_HAS_EARLY_PRINTK
|
|
|
|
select USE_GENERIC_EARLY_PRINTK_8250
|
2015-03-16 21:43:10 +00:00
|
|
|
select USE_OF
|
|
|
|
help
|
|
|
|
This enables support for the IMG Pistachio SoC platform.
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config MIPS_MALTA
|
2006-05-09 21:34:53 +00:00
|
|
|
bool "MIPS Malta board"
|
2005-09-15 08:52:34 +00:00
|
|
|
select ARCH_MAY_HAVE_PC_FDC
|
2018-02-05 14:37:43 +00:00
|
|
|
select ARCH_MIGHT_HAVE_PC_PARPORT
|
2018-02-05 15:40:00 +00:00
|
|
|
select ARCH_MIGHT_HAVE_PC_SERIO
|
2005-04-16 22:20:36 +00:00
|
|
|
select BOOT_ELF32
|
2008-01-29 10:15:00 +00:00
|
|
|
select BOOT_RAW
|
2015-05-22 15:51:02 +00:00
|
|
|
select BUILTIN_DTB
|
2007-10-18 16:48:11 +00:00
|
|
|
select CEVT_R4K
|
2014-10-20 19:03:58 +00:00
|
|
|
select CLKSRC_MIPS_GIC
|
2015-08-22 09:40:41 +00:00
|
|
|
select COMMON_CLK
|
2018-11-12 17:00:59 +00:00
|
|
|
select CSRC_R4K
|
2013-09-27 12:41:44 +00:00
|
|
|
select DMA_MAYBE_COHERENT
|
2005-04-16 22:20:36 +00:00
|
|
|
select GENERIC_ISA_DMA
|
2011-06-01 18:05:10 +00:00
|
|
|
select HAVE_PCSPKR_PLATFORM
|
2018-11-15 19:05:32 +00:00
|
|
|
select HAVE_PCI
|
2007-10-11 22:46:10 +00:00
|
|
|
select I8253
|
2005-04-16 22:20:36 +00:00
|
|
|
select I8259
|
2018-11-12 17:00:59 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2005-10-29 18:32:41 +00:00
|
|
|
select MIPS_BONITO64
|
2006-06-20 16:15:20 +00:00
|
|
|
select MIPS_CPU_SCACHE
|
2018-11-12 17:00:59 +00:00
|
|
|
select MIPS_GIC
|
2014-10-21 04:27:57 +00:00
|
|
|
select MIPS_L1_CACHE_SHIFT_6
|
2005-10-29 18:32:41 +00:00
|
|
|
select MIPS_MSC
|
2018-11-12 17:00:59 +00:00
|
|
|
select PCI_GT64XXX_PCI0
|
2015-09-22 18:58:43 +00:00
|
|
|
select SMP_UP if SMP
|
2005-04-16 22:20:36 +00:00
|
|
|
select SWAP_IO_SPACE
|
2005-10-20 21:33:09 +00:00
|
|
|
select SYS_HAS_CPU_MIPS32_R1
|
|
|
|
select SYS_HAS_CPU_MIPS32_R2
|
2014-01-16 13:12:36 +00:00
|
|
|
select SYS_HAS_CPU_MIPS32_R3_5
|
2015-02-27 00:16:38 +00:00
|
|
|
select SYS_HAS_CPU_MIPS32_R5
|
2014-11-19 11:31:56 +00:00
|
|
|
select SYS_HAS_CPU_MIPS32_R6
|
2005-10-20 21:33:09 +00:00
|
|
|
select SYS_HAS_CPU_MIPS64_R1
|
2012-07-19 07:11:15 +00:00
|
|
|
select SYS_HAS_CPU_MIPS64_R2
|
2014-11-19 11:31:56 +00:00
|
|
|
select SYS_HAS_CPU_MIPS64_R6
|
2005-10-20 21:33:09 +00:00
|
|
|
select SYS_HAS_CPU_NEVADA
|
|
|
|
select SYS_HAS_CPU_RM7000
|
2005-09-03 22:56:21 +00:00
|
|
|
select SYS_SUPPORTS_32BIT_KERNEL
|
|
|
|
select SYS_SUPPORTS_64BIT_KERNEL
|
2005-10-29 18:32:41 +00:00
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
2015-02-27 00:16:38 +00:00
|
|
|
select SYS_SUPPORTS_HIGHMEM
|
2005-10-29 18:32:41 +00:00
|
|
|
select SYS_SUPPORTS_LITTLE_ENDIAN
|
2014-11-15 22:07:07 +00:00
|
|
|
select SYS_SUPPORTS_MICROMIPS
|
2018-11-12 17:00:59 +00:00
|
|
|
select SYS_SUPPORTS_MIPS16
|
2009-06-17 23:22:53 +00:00
|
|
|
select SYS_SUPPORTS_MIPS_CMP
|
2014-01-15 10:31:56 +00:00
|
|
|
select SYS_SUPPORTS_MIPS_CPS
|
2006-06-05 16:24:46 +00:00
|
|
|
select SYS_SUPPORTS_MULTITHREADING
|
2018-11-12 17:00:59 +00:00
|
|
|
select SYS_SUPPORTS_RELOCATABLE
|
2007-02-02 16:41:47 +00:00
|
|
|
select SYS_SUPPORTS_SMARTMIPS
|
2018-01-15 20:54:35 +00:00
|
|
|
select SYS_SUPPORTS_VPE_LOADER
|
2009-10-14 10:12:16 +00:00
|
|
|
select SYS_SUPPORTS_ZBOOT
|
2015-05-22 15:51:02 +00:00
|
|
|
select USE_OF
|
2015-04-27 14:07:19 +00:00
|
|
|
select ZONE_DMA32 if 64BIT
|
2005-04-16 22:20:36 +00:00
|
|
|
help
|
2005-02-02 22:23:46 +00:00
|
|
|
This enables support for the MIPS Technologies Malta evaluation
|
2005-04-16 22:20:36 +00:00
|
|
|
board.
|
|
|
|
|
2016-01-14 01:15:39 +00:00
|
|
|
config MACH_PIC32
|
|
|
|
bool "Microchip PIC32 Family"
|
|
|
|
help
|
|
|
|
This enables support for the Microchip PIC32 family of platforms.
|
|
|
|
|
|
|
|
Microchip PIC32 is a family of general-purpose 32 bit MIPS core
|
|
|
|
microcontrollers.
|
|
|
|
|
2005-10-29 18:32:41 +00:00
|
|
|
config MACH_VR41XX
|
2007-04-26 10:45:09 +00:00
|
|
|
bool "NEC VR4100 series based machines"
|
2007-10-18 16:48:11 +00:00
|
|
|
select CEVT_R4K
|
2007-11-24 22:33:28 +00:00
|
|
|
select CSRC_R4K
|
2005-10-20 21:33:09 +00:00
|
|
|
select SYS_HAS_CPU_VR41XX
|
2014-04-28 23:49:24 +00:00
|
|
|
select SYS_SUPPORTS_MIPS16
|
2016-04-19 09:23:22 +00:00
|
|
|
select GPIOLIB
|
2005-10-29 18:32:41 +00:00
|
|
|
|
2008-06-16 14:49:21 +00:00
|
|
|
config NXP_STB220
|
|
|
|
bool "NXP STB220 board"
|
|
|
|
select SOC_PNX833X
|
|
|
|
help
|
2019-03-11 15:54:27 +00:00
|
|
|
Support for NXP Semiconductors STB220 Development Board.
|
2008-06-16 14:49:21 +00:00
|
|
|
|
|
|
|
config NXP_STB225
|
|
|
|
bool "NXP 225 board"
|
|
|
|
select SOC_PNX833X
|
|
|
|
select SOC_PNX8335
|
|
|
|
help
|
2019-03-11 15:54:27 +00:00
|
|
|
Support for NXP Semiconductors STB225 Development Board.
|
2008-06-16 14:49:21 +00:00
|
|
|
|
2013-01-20 21:05:30 +00:00
|
|
|
config RALINK
|
|
|
|
bool "Ralink based machines"
|
|
|
|
select CEVT_R4K
|
|
|
|
select CSRC_R4K
|
|
|
|
select BOOT_RAW
|
|
|
|
select DMA_NONCOHERENT
|
2015-05-26 16:20:06 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2013-01-20 21:05:30 +00:00
|
|
|
select USE_OF
|
|
|
|
select SYS_HAS_CPU_MIPS32_R1
|
|
|
|
select SYS_HAS_CPU_MIPS32_R2
|
|
|
|
select SYS_SUPPORTS_32BIT_KERNEL
|
|
|
|
select SYS_SUPPORTS_LITTLE_ENDIAN
|
2014-04-28 23:49:24 +00:00
|
|
|
select SYS_SUPPORTS_MIPS16
|
2013-01-20 21:05:30 +00:00
|
|
|
select SYS_HAS_EARLY_PRINTK
|
|
|
|
select CLKDEV_LOOKUP
|
2013-09-03 22:16:59 +00:00
|
|
|
select ARCH_HAS_RESET_CONTROLLER
|
|
|
|
select RESET_CONTROLLER
|
2013-01-20 21:05:30 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config SGI_IP22
|
2006-05-09 21:34:53 +00:00
|
|
|
bool "SGI IP22 (Indy/Indigo2)"
|
2019-10-09 13:27:17 +00:00
|
|
|
select ARC_MEMORY
|
2019-10-09 13:27:14 +00:00
|
|
|
select ARC_PROMLIB
|
2012-11-15 19:48:50 +00:00
|
|
|
select FW_ARC
|
|
|
|
select FW_ARC32
|
2018-02-05 15:40:00 +00:00
|
|
|
select ARCH_MIGHT_HAVE_PC_SERIO
|
2005-04-16 22:20:36 +00:00
|
|
|
select BOOT_ELF32
|
2007-10-18 16:48:11 +00:00
|
|
|
select CEVT_R4K
|
2007-11-24 22:33:28 +00:00
|
|
|
select CSRC_R4K
|
2007-12-02 12:00:32 +00:00
|
|
|
select DEFAULT_SGI_PARTITION
|
2005-04-16 22:20:36 +00:00
|
|
|
select DMA_NONCOHERENT
|
2018-11-15 19:05:37 +00:00
|
|
|
select HAVE_EISA
|
2007-10-11 22:46:10 +00:00
|
|
|
select I8253
|
2007-11-23 19:34:16 +00:00
|
|
|
select I8259
|
2005-04-16 22:20:36 +00:00
|
|
|
select IP22_CPU_SCACHE
|
2015-05-26 16:20:06 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2006-11-30 01:14:51 +00:00
|
|
|
select GENERIC_ISA_DMA_SUPPORT_BROKEN
|
2007-12-02 12:00:32 +00:00
|
|
|
select SGI_HAS_I8042
|
|
|
|
select SGI_HAS_INDYDOG
|
2008-07-16 12:06:15 +00:00
|
|
|
select SGI_HAS_HAL2
|
2007-12-02 12:00:32 +00:00
|
|
|
select SGI_HAS_SEEQ
|
|
|
|
select SGI_HAS_WD93
|
|
|
|
select SGI_HAS_ZILOG
|
2005-04-16 22:20:36 +00:00
|
|
|
select SWAP_IO_SPACE
|
2005-10-20 21:33:09 +00:00
|
|
|
select SYS_HAS_CPU_R4X00
|
|
|
|
select SYS_HAS_CPU_R5000
|
2019-10-09 13:27:17 +00:00
|
|
|
select SYS_HAS_EARLY_PRINTK
|
2005-09-03 22:56:21 +00:00
|
|
|
select SYS_SUPPORTS_32BIT_KERNEL
|
|
|
|
select SYS_SUPPORTS_64BIT_KERNEL
|
2005-10-29 18:32:41 +00:00
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
2014-01-14 17:54:38 +00:00
|
|
|
select MIPS_L1_CACHE_SHIFT_7
|
2005-04-16 22:20:36 +00:00
|
|
|
help
|
|
|
|
This are the SGI Indy, Challenge S and Indigo2, as well as certain
|
|
|
|
OEM variants like the Tandem CMN B006S. To compile a Linux kernel
|
|
|
|
that runs on these, say Y here.
|
|
|
|
|
|
|
|
config SGI_IP27
|
2006-05-09 21:34:53 +00:00
|
|
|
bool "SGI IP27 (Origin200/2000)"
|
2018-06-15 11:08:44 +00:00
|
|
|
select ARCH_HAS_PHYS_TO_DMA
|
2019-09-16 11:13:10 +00:00
|
|
|
select ARCH_SPARSEMEM_ENABLE
|
2012-11-15 19:48:50 +00:00
|
|
|
select FW_ARC
|
|
|
|
select FW_ARC64
|
2019-10-22 16:13:15 +00:00
|
|
|
select ARC_CMDLINE_ONLY
|
2005-10-29 18:32:41 +00:00
|
|
|
select BOOT_ELF64
|
2007-12-02 12:00:32 +00:00
|
|
|
select DEFAULT_SGI_PARTITION
|
2007-03-01 11:56:43 +00:00
|
|
|
select SYS_HAS_EARLY_PRINTK
|
2018-11-15 19:05:32 +00:00
|
|
|
select HAVE_PCI
|
2019-02-19 15:57:20 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2019-05-07 21:09:15 +00:00
|
|
|
select IRQ_DOMAIN_HIERARCHY
|
2007-02-06 16:53:15 +00:00
|
|
|
select NR_CPUS_DEFAULT_64
|
2019-05-07 21:09:13 +00:00
|
|
|
select PCI_DRIVERS_GENERIC
|
|
|
|
select PCI_XTALK_BRIDGE
|
2005-10-20 21:33:09 +00:00
|
|
|
select SYS_HAS_CPU_R10000
|
2005-09-03 22:56:21 +00:00
|
|
|
select SYS_SUPPORTS_64BIT_KERNEL
|
2005-10-29 18:32:41 +00:00
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
2006-06-11 22:03:08 +00:00
|
|
|
select SYS_SUPPORTS_NUMA
|
2006-11-02 17:23:33 +00:00
|
|
|
select SYS_SUPPORTS_SMP
|
2014-01-14 17:54:38 +00:00
|
|
|
select MIPS_L1_CACHE_SHIFT_7
|
MIPS: SGI-IP27: always enable NUMA in Kconfig
When a configuration has NUMA disabled and SGI_IP27 enabled, the build
fails:
CC kernel/bounds.s
CC arch/mips/kernel/asm-offsets.s
In file included from arch/mips/include/asm/topology.h:11,
from include/linux/topology.h:36,
from include/linux/gfp.h:9,
from include/linux/slab.h:15,
from include/linux/crypto.h:19,
from include/crypto/hash.h:11,
from include/linux/uio.h:10,
from include/linux/socket.h:8,
from include/linux/compat.h:15,
from arch/mips/kernel/asm-offsets.c:12:
include/linux/topology.h: In function 'numa_node_id':
arch/mips/include/asm/mach-ip27/topology.h:16:27: error: implicit declaration of function 'cputonasid'; did you mean 'cpu_vpe_id'? [-Werror=implicit-function-declaration]
#define cpu_to_node(cpu) (cputonasid(cpu))
^~~~~~~~~~
include/linux/topology.h:119:9: note: in expansion of macro 'cpu_to_node'
return cpu_to_node(raw_smp_processor_id());
^~~~~~~~~~~
include/linux/topology.h: In function 'cpu_cpu_mask':
arch/mips/include/asm/mach-ip27/topology.h:19:7: error: implicit declaration of function 'hub_data' [-Werror=implicit-function-declaration]
&hub_data(node)->h_cpus)
^~~~~~~~
include/linux/topology.h:210:9: note: in expansion of macro 'cpumask_of_node'
return cpumask_of_node(cpu_to_node(cpu));
^~~~~~~~~~~~~~~
arch/mips/include/asm/mach-ip27/topology.h:19:21: error: invalid type argument of '->' (have 'int')
&hub_data(node)->h_cpus)
^~
include/linux/topology.h:210:9: note: in expansion of macro 'cpumask_of_node'
return cpumask_of_node(cpu_to_node(cpu));
^~~~~~~~~~~~~~~
Before switch from discontigmem to sparsemem, there always was
CONFIG_NEED_MULTIPLE_NODES=y because it was selected by DISCONTIGMEM.
Without DISCONTIGMEM it is possible to have SPARSEMEM without NUMA for
SGI_IP27 and as many things there rely on custom node definition, the
build breaks.
As Thomas noted "... there are right now too many places in IP27 code,
which assumes NUMA enabled", the simplest solution would be to always
enable NUMA for SGI-IP27 builds.
Reported-by: kernel test robot <lkp@intel.com>
Fixes: 397dc00e249e ("mips: sgi-ip27: switch from DISCONTIGMEM to SPARSEMEM")
Cc: stable@vger.kernel.org
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-08-05 12:51:41 +00:00
|
|
|
select NUMA
|
2005-04-16 22:20:36 +00:00
|
|
|
help
|
|
|
|
This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
|
|
|
|
workstations. To compile a Linux kernel that runs on these, say Y
|
|
|
|
here.
|
|
|
|
|
2007-12-02 12:00:32 +00:00
|
|
|
config SGI_IP28
|
2013-01-17 02:53:19 +00:00
|
|
|
bool "SGI IP28 (Indigo2 R10k)"
|
2019-10-09 13:27:17 +00:00
|
|
|
select ARC_MEMORY
|
2019-10-09 13:27:14 +00:00
|
|
|
select ARC_PROMLIB
|
2012-11-15 19:48:50 +00:00
|
|
|
select FW_ARC
|
|
|
|
select FW_ARC64
|
2018-02-05 15:40:00 +00:00
|
|
|
select ARCH_MIGHT_HAVE_PC_SERIO
|
2007-12-02 12:00:32 +00:00
|
|
|
select BOOT_ELF64
|
|
|
|
select CEVT_R4K
|
|
|
|
select CSRC_R4K
|
|
|
|
select DEFAULT_SGI_PARTITION
|
|
|
|
select DMA_NONCOHERENT
|
|
|
|
select GENERIC_ISA_DMA_SUPPORT_BROKEN
|
2015-05-26 16:20:06 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2018-11-15 19:05:37 +00:00
|
|
|
select HAVE_EISA
|
2007-12-02 12:00:32 +00:00
|
|
|
select I8253
|
|
|
|
select I8259
|
|
|
|
select SGI_HAS_I8042
|
|
|
|
select SGI_HAS_INDYDOG
|
2008-07-10 18:29:55 +00:00
|
|
|
select SGI_HAS_HAL2
|
2007-12-02 12:00:32 +00:00
|
|
|
select SGI_HAS_SEEQ
|
|
|
|
select SGI_HAS_WD93
|
|
|
|
select SGI_HAS_ZILOG
|
|
|
|
select SWAP_IO_SPACE
|
|
|
|
select SYS_HAS_CPU_R10000
|
2019-10-09 13:27:17 +00:00
|
|
|
select SYS_HAS_EARLY_PRINTK
|
2007-12-02 12:00:32 +00:00
|
|
|
select SYS_SUPPORTS_64BIT_KERNEL
|
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
2014-08-19 20:00:07 +00:00
|
|
|
select MIPS_L1_CACHE_SHIFT_7
|
2019-03-11 15:54:27 +00:00
|
|
|
help
|
|
|
|
This is the SGI Indigo2 with R10000 processor. To compile a Linux
|
|
|
|
kernel that runs on these, say Y here.
|
2007-12-02 12:00:32 +00:00
|
|
|
|
2019-10-24 10:18:29 +00:00
|
|
|
config SGI_IP30
|
|
|
|
bool "SGI IP30 (Octane/Octane2)"
|
|
|
|
select ARCH_HAS_PHYS_TO_DMA
|
|
|
|
select FW_ARC
|
|
|
|
select FW_ARC64
|
|
|
|
select BOOT_ELF64
|
|
|
|
select CEVT_R4K
|
|
|
|
select CSRC_R4K
|
|
|
|
select SYNC_R4K if SMP
|
|
|
|
select ZONE_DMA32
|
|
|
|
select HAVE_PCI
|
|
|
|
select IRQ_MIPS_CPU
|
|
|
|
select IRQ_DOMAIN_HIERARCHY
|
|
|
|
select NR_CPUS_DEFAULT_2
|
|
|
|
select PCI_DRIVERS_GENERIC
|
|
|
|
select PCI_XTALK_BRIDGE
|
|
|
|
select SYS_HAS_EARLY_PRINTK
|
|
|
|
select SYS_HAS_CPU_R10000
|
|
|
|
select SYS_SUPPORTS_64BIT_KERNEL
|
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
|
|
|
select SYS_SUPPORTS_SMP
|
|
|
|
select MIPS_L1_CACHE_SHIFT_7
|
|
|
|
select ARC_MEMORY
|
|
|
|
help
|
|
|
|
These are the SGI Octane and Octane2 graphics workstations. To
|
|
|
|
compile a Linux kernel that runs on these, say Y here.
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config SGI_IP32
|
2007-07-10 16:33:00 +00:00
|
|
|
bool "SGI IP32 (O2)"
|
2019-10-09 13:27:14 +00:00
|
|
|
select ARC_MEMORY
|
|
|
|
select ARC_PROMLIB
|
2018-06-15 11:08:48 +00:00
|
|
|
select ARCH_HAS_PHYS_TO_DMA
|
2012-11-15 19:48:50 +00:00
|
|
|
select FW_ARC
|
|
|
|
select FW_ARC32
|
2005-04-16 22:20:36 +00:00
|
|
|
select BOOT_ELF32
|
2007-10-18 16:48:11 +00:00
|
|
|
select CEVT_R4K
|
2007-11-24 22:33:28 +00:00
|
|
|
select CSRC_R4K
|
2005-04-16 22:20:36 +00:00
|
|
|
select DMA_NONCOHERENT
|
2018-11-15 19:05:32 +00:00
|
|
|
select HAVE_PCI
|
2015-05-26 16:20:06 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2005-04-16 22:20:36 +00:00
|
|
|
select R5000_CPU_SCACHE
|
|
|
|
select RM7000_CPU_SCACHE
|
2005-10-20 21:33:09 +00:00
|
|
|
select SYS_HAS_CPU_R5000
|
|
|
|
select SYS_HAS_CPU_R10000 if BROKEN
|
|
|
|
select SYS_HAS_CPU_RM7000
|
2006-01-19 14:55:42 +00:00
|
|
|
select SYS_HAS_CPU_NEVADA
|
2005-09-03 22:56:21 +00:00
|
|
|
select SYS_SUPPORTS_64BIT_KERNEL
|
2005-07-25 22:45:45 +00:00
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
|
|
|
help
|
2005-10-29 18:32:41 +00:00
|
|
|
If you want this kernel to run on SGI O2 workstation, say Y here.
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-07-27 06:25:43 +00:00
|
|
|
config SIBYTE_CRHINE
|
|
|
|
bool "Sibyte BCM91120C-CRhine"
|
2005-10-20 06:57:11 +00:00
|
|
|
select BOOT_ELF32
|
2007-07-27 06:25:43 +00:00
|
|
|
select SIBYTE_BCM1120
|
2005-10-20 06:57:11 +00:00
|
|
|
select SWAP_IO_SPACE
|
2005-10-20 21:33:09 +00:00
|
|
|
select SYS_HAS_CPU_SB1
|
2005-10-20 06:57:11 +00:00
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
|
|
|
select SYS_SUPPORTS_LITTLE_ENDIAN
|
|
|
|
|
2007-07-27 06:25:43 +00:00
|
|
|
config SIBYTE_CARMEL
|
|
|
|
bool "Sibyte BCM91120x-Carmel"
|
2005-10-29 18:32:41 +00:00
|
|
|
select BOOT_ELF32
|
2007-07-27 06:25:43 +00:00
|
|
|
select SIBYTE_BCM1120
|
2005-10-29 18:32:41 +00:00
|
|
|
select SWAP_IO_SPACE
|
2005-10-20 21:33:09 +00:00
|
|
|
select SYS_HAS_CPU_SB1
|
2005-06-05 03:57:20 +00:00
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
2005-10-29 18:32:41 +00:00
|
|
|
select SYS_SUPPORTS_LITTLE_ENDIAN
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-07-27 06:25:43 +00:00
|
|
|
config SIBYTE_CRHONE
|
|
|
|
bool "Sibyte BCM91125C-CRhone"
|
2005-10-29 18:32:41 +00:00
|
|
|
select BOOT_ELF32
|
2007-07-27 06:25:43 +00:00
|
|
|
select SIBYTE_BCM1125
|
2005-10-29 18:32:41 +00:00
|
|
|
select SWAP_IO_SPACE
|
2005-10-20 21:33:09 +00:00
|
|
|
select SYS_HAS_CPU_SB1
|
2005-10-29 18:32:41 +00:00
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
2007-07-27 06:25:43 +00:00
|
|
|
select SYS_SUPPORTS_HIGHMEM
|
2005-10-29 18:32:41 +00:00
|
|
|
select SYS_SUPPORTS_LITTLE_ENDIAN
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2005-10-29 18:32:41 +00:00
|
|
|
config SIBYTE_RHONE
|
2006-05-09 21:34:53 +00:00
|
|
|
bool "Sibyte BCM91125E-Rhone"
|
2005-10-29 18:32:41 +00:00
|
|
|
select BOOT_ELF32
|
|
|
|
select SIBYTE_BCM1125H
|
|
|
|
select SWAP_IO_SPACE
|
2005-10-20 21:33:09 +00:00
|
|
|
select SYS_HAS_CPU_SB1
|
2005-10-29 18:32:41 +00:00
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
|
|
|
select SYS_SUPPORTS_LITTLE_ENDIAN
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-07-27 06:25:43 +00:00
|
|
|
config SIBYTE_SWARM
|
|
|
|
bool "Sibyte BCM91250A-SWARM"
|
2005-10-29 18:32:41 +00:00
|
|
|
select BOOT_ELF32
|
2010-04-18 13:26:36 +00:00
|
|
|
select HAVE_PATA_PLATFORM
|
2007-07-27 06:25:43 +00:00
|
|
|
select SIBYTE_SB1250
|
2005-10-29 18:32:41 +00:00
|
|
|
select SWAP_IO_SPACE
|
2005-10-20 21:33:09 +00:00
|
|
|
select SYS_HAS_CPU_SB1
|
2005-10-29 18:32:41 +00:00
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
2007-07-27 06:25:43 +00:00
|
|
|
select SYS_SUPPORTS_HIGHMEM
|
2005-03-01 06:33:16 +00:00
|
|
|
select SYS_SUPPORTS_LITTLE_ENDIAN
|
2007-11-03 02:05:43 +00:00
|
|
|
select ZONE_DMA32 if 64BIT
|
MIPS: SiByte: Enable swiotlb for SWARM, LittleSur and BigSur
The Broadcom SiByte BCM1250, BCM1125, and BCM1125H SOCs have an onchip
DRAM controller that supports memory amounts of up to 16GiB, and due to
how the address decoder has been wired in the SOC any memory beyond 1GiB
is actually mapped starting from 4GiB physical up, that is beyond the
32-bit addressable limit[1]. Consequently if the maximum amount of
memory has been installed, then it will span up to 19GiB.
Many of the evaluation boards we support that are based on one of these
SOCs have their memory soldered and the amount present fits in the
32-bit address range. The BCM91250A SWARM board however has actual DIMM
slots and accepts, depending on the peripherals revision of the SOC, up
to 4GiB or 8GiB of memory in commercially available JEDEC modules[2].
I believe this is also the case with the BCM91250C2 LittleSur board.
This means that up to either 3GiB or 7GiB of memory requires 64-bit
addressing to access.
I believe the BCM91480B BigSur board, which has the BCM1480 SOC instead,
accepts at least as much memory, although I have no documentation or
actual hardware available to verify that.
Both systems have PCI slots installed for use by any PCI option boards,
including ones that only support 32-bit addressing (additionally the
32-bit PCI host bridge of the BCM1250, BCM1125, and BCM1125H SOCs limits
addressing to 32-bits), and there is no IOMMU available. Therefore for
PCI DMA to work in the presence of memory beyond enable swiotlb for the
affected systems.
All the other SOC onchip DMA devices use 40-bit addressing and therefore
can address the whole memory, so only enable swiotlb if PCI support and
support for DMA beyond 4GiB have been both enabled in the configuration
of the kernel.
This shows up as follows:
Broadcom SiByte BCM1250 B2 @ 800 MHz (SB1 rev 2)
Board type: SiByte BCM91250A (SWARM)
Determined physical RAM map:
memory: 000000000fe7fe00 @ 0000000000000000 (usable)
memory: 000000001ffffe00 @ 0000000080000000 (usable)
memory: 000000000ffffe00 @ 00000000c0000000 (usable)
memory: 0000000087fffe00 @ 0000000100000000 (usable)
software IO TLB: mapped [mem 0xcbffc000-0xcfffc000] (64MB)
in the bootstrap log and removes failures like these:
defxx 0000:02:00.0: dma_direct_map_page: overflow 0x0000000185bc6080+4608 of device mask ffffffff bus mask 0
fddi0: Receive buffer allocation failed
fddi0: Adapter open failed!
IP-Config: Failed to open fddi0
defxx 0000:09:08.0: dma_direct_map_page: overflow 0x0000000185bc6080+4608 of device mask ffffffff bus mask 0
fddi1: Receive buffer allocation failed
fddi1: Adapter open failed!
IP-Config: Failed to open fddi1
when memory beyond 4GiB is handed out to devices that can only do 32-bit
addressing.
This updates commit cce335ae47e2 ("[MIPS] 64-bit Sibyte kernels need
DMA32.").
References:
[1] "BCM1250/BCM1125/BCM1125H User Manual", Revision 1250_1125-UM100-R,
Broadcom Corporation, 21 Oct 2002, Section 3: "System Overview",
"Memory Map", pp. 34-38
[2] "BCM91250A User Manual", Revision 91250A-UM100-R, Broadcom
Corporation, 18 May 2004, Section 3: "Physical Description",
"Supported DRAM", p. 23
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
[paul.burton@mips.com: Remove GPL text from dma.c; SPDX tag covers it]
Signed-off-by: Paul Burton <paul.burton@mips.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Patchwork: https://patchwork.linux-mips.org/patch/21108/
References: cce335ae47e2 ("[MIPS] 64-bit Sibyte kernels need DMA32.")
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
2018-11-13 22:42:44 +00:00
|
|
|
select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
|
2005-03-01 06:33:16 +00:00
|
|
|
|
2007-07-27 06:25:43 +00:00
|
|
|
config SIBYTE_LITTLESUR
|
|
|
|
bool "Sibyte BCM91250C2-LittleSur"
|
2005-10-29 18:32:41 +00:00
|
|
|
select BOOT_ELF32
|
2010-04-18 13:26:36 +00:00
|
|
|
select HAVE_PATA_PLATFORM
|
2005-10-29 18:32:41 +00:00
|
|
|
select SIBYTE_SB1250
|
|
|
|
select SWAP_IO_SPACE
|
2005-10-20 21:33:09 +00:00
|
|
|
select SYS_HAS_CPU_SB1
|
2005-10-29 18:32:41 +00:00
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
|
|
|
select SYS_SUPPORTS_HIGHMEM
|
|
|
|
select SYS_SUPPORTS_LITTLE_ENDIAN
|
2018-11-13 22:42:37 +00:00
|
|
|
select ZONE_DMA32 if 64BIT
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-07-27 06:25:43 +00:00
|
|
|
config SIBYTE_SENTOSA
|
|
|
|
bool "Sibyte BCM91250E-Sentosa"
|
2005-10-29 18:32:41 +00:00
|
|
|
select BOOT_ELF32
|
|
|
|
select SIBYTE_SB1250
|
|
|
|
select SWAP_IO_SPACE
|
2005-10-20 21:33:09 +00:00
|
|
|
select SYS_HAS_CPU_SB1
|
2005-10-29 18:32:41 +00:00
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
|
|
|
select SYS_SUPPORTS_LITTLE_ENDIAN
|
MIPS: SiByte: Enable swiotlb for SWARM, LittleSur and BigSur
The Broadcom SiByte BCM1250, BCM1125, and BCM1125H SOCs have an onchip
DRAM controller that supports memory amounts of up to 16GiB, and due to
how the address decoder has been wired in the SOC any memory beyond 1GiB
is actually mapped starting from 4GiB physical up, that is beyond the
32-bit addressable limit[1]. Consequently if the maximum amount of
memory has been installed, then it will span up to 19GiB.
Many of the evaluation boards we support that are based on one of these
SOCs have their memory soldered and the amount present fits in the
32-bit address range. The BCM91250A SWARM board however has actual DIMM
slots and accepts, depending on the peripherals revision of the SOC, up
to 4GiB or 8GiB of memory in commercially available JEDEC modules[2].
I believe this is also the case with the BCM91250C2 LittleSur board.
This means that up to either 3GiB or 7GiB of memory requires 64-bit
addressing to access.
I believe the BCM91480B BigSur board, which has the BCM1480 SOC instead,
accepts at least as much memory, although I have no documentation or
actual hardware available to verify that.
Both systems have PCI slots installed for use by any PCI option boards,
including ones that only support 32-bit addressing (additionally the
32-bit PCI host bridge of the BCM1250, BCM1125, and BCM1125H SOCs limits
addressing to 32-bits), and there is no IOMMU available. Therefore for
PCI DMA to work in the presence of memory beyond enable swiotlb for the
affected systems.
All the other SOC onchip DMA devices use 40-bit addressing and therefore
can address the whole memory, so only enable swiotlb if PCI support and
support for DMA beyond 4GiB have been both enabled in the configuration
of the kernel.
This shows up as follows:
Broadcom SiByte BCM1250 B2 @ 800 MHz (SB1 rev 2)
Board type: SiByte BCM91250A (SWARM)
Determined physical RAM map:
memory: 000000000fe7fe00 @ 0000000000000000 (usable)
memory: 000000001ffffe00 @ 0000000080000000 (usable)
memory: 000000000ffffe00 @ 00000000c0000000 (usable)
memory: 0000000087fffe00 @ 0000000100000000 (usable)
software IO TLB: mapped [mem 0xcbffc000-0xcfffc000] (64MB)
in the bootstrap log and removes failures like these:
defxx 0000:02:00.0: dma_direct_map_page: overflow 0x0000000185bc6080+4608 of device mask ffffffff bus mask 0
fddi0: Receive buffer allocation failed
fddi0: Adapter open failed!
IP-Config: Failed to open fddi0
defxx 0000:09:08.0: dma_direct_map_page: overflow 0x0000000185bc6080+4608 of device mask ffffffff bus mask 0
fddi1: Receive buffer allocation failed
fddi1: Adapter open failed!
IP-Config: Failed to open fddi1
when memory beyond 4GiB is handed out to devices that can only do 32-bit
addressing.
This updates commit cce335ae47e2 ("[MIPS] 64-bit Sibyte kernels need
DMA32.").
References:
[1] "BCM1250/BCM1125/BCM1125H User Manual", Revision 1250_1125-UM100-R,
Broadcom Corporation, 21 Oct 2002, Section 3: "System Overview",
"Memory Map", pp. 34-38
[2] "BCM91250A User Manual", Revision 91250A-UM100-R, Broadcom
Corporation, 18 May 2004, Section 3: "Physical Description",
"Supported DRAM", p. 23
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
[paul.burton@mips.com: Remove GPL text from dma.c; SPDX tag covers it]
Signed-off-by: Paul Burton <paul.burton@mips.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Patchwork: https://patchwork.linux-mips.org/patch/21108/
References: cce335ae47e2 ("[MIPS] 64-bit Sibyte kernels need DMA32.")
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
2018-11-13 22:42:44 +00:00
|
|
|
select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-07-27 06:25:43 +00:00
|
|
|
config SIBYTE_BIGSUR
|
|
|
|
bool "Sibyte BCM91480B-BigSur"
|
2005-10-29 18:32:41 +00:00
|
|
|
select BOOT_ELF32
|
2007-07-27 06:25:43 +00:00
|
|
|
select NR_CPUS_DEFAULT_4
|
|
|
|
select SIBYTE_BCM1x80
|
2005-10-29 18:32:41 +00:00
|
|
|
select SWAP_IO_SPACE
|
2005-10-20 21:33:09 +00:00
|
|
|
select SYS_HAS_CPU_SB1
|
2005-10-29 18:32:41 +00:00
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
2007-11-01 21:55:39 +00:00
|
|
|
select SYS_SUPPORTS_HIGHMEM
|
2005-10-29 18:32:41 +00:00
|
|
|
select SYS_SUPPORTS_LITTLE_ENDIAN
|
2007-11-03 02:05:43 +00:00
|
|
|
select ZONE_DMA32 if 64BIT
|
MIPS: SiByte: Enable swiotlb for SWARM, LittleSur and BigSur
The Broadcom SiByte BCM1250, BCM1125, and BCM1125H SOCs have an onchip
DRAM controller that supports memory amounts of up to 16GiB, and due to
how the address decoder has been wired in the SOC any memory beyond 1GiB
is actually mapped starting from 4GiB physical up, that is beyond the
32-bit addressable limit[1]. Consequently if the maximum amount of
memory has been installed, then it will span up to 19GiB.
Many of the evaluation boards we support that are based on one of these
SOCs have their memory soldered and the amount present fits in the
32-bit address range. The BCM91250A SWARM board however has actual DIMM
slots and accepts, depending on the peripherals revision of the SOC, up
to 4GiB or 8GiB of memory in commercially available JEDEC modules[2].
I believe this is also the case with the BCM91250C2 LittleSur board.
This means that up to either 3GiB or 7GiB of memory requires 64-bit
addressing to access.
I believe the BCM91480B BigSur board, which has the BCM1480 SOC instead,
accepts at least as much memory, although I have no documentation or
actual hardware available to verify that.
Both systems have PCI slots installed for use by any PCI option boards,
including ones that only support 32-bit addressing (additionally the
32-bit PCI host bridge of the BCM1250, BCM1125, and BCM1125H SOCs limits
addressing to 32-bits), and there is no IOMMU available. Therefore for
PCI DMA to work in the presence of memory beyond enable swiotlb for the
affected systems.
All the other SOC onchip DMA devices use 40-bit addressing and therefore
can address the whole memory, so only enable swiotlb if PCI support and
support for DMA beyond 4GiB have been both enabled in the configuration
of the kernel.
This shows up as follows:
Broadcom SiByte BCM1250 B2 @ 800 MHz (SB1 rev 2)
Board type: SiByte BCM91250A (SWARM)
Determined physical RAM map:
memory: 000000000fe7fe00 @ 0000000000000000 (usable)
memory: 000000001ffffe00 @ 0000000080000000 (usable)
memory: 000000000ffffe00 @ 00000000c0000000 (usable)
memory: 0000000087fffe00 @ 0000000100000000 (usable)
software IO TLB: mapped [mem 0xcbffc000-0xcfffc000] (64MB)
in the bootstrap log and removes failures like these:
defxx 0000:02:00.0: dma_direct_map_page: overflow 0x0000000185bc6080+4608 of device mask ffffffff bus mask 0
fddi0: Receive buffer allocation failed
fddi0: Adapter open failed!
IP-Config: Failed to open fddi0
defxx 0000:09:08.0: dma_direct_map_page: overflow 0x0000000185bc6080+4608 of device mask ffffffff bus mask 0
fddi1: Receive buffer allocation failed
fddi1: Adapter open failed!
IP-Config: Failed to open fddi1
when memory beyond 4GiB is handed out to devices that can only do 32-bit
addressing.
This updates commit cce335ae47e2 ("[MIPS] 64-bit Sibyte kernels need
DMA32.").
References:
[1] "BCM1250/BCM1125/BCM1125H User Manual", Revision 1250_1125-UM100-R,
Broadcom Corporation, 21 Oct 2002, Section 3: "System Overview",
"Memory Map", pp. 34-38
[2] "BCM91250A User Manual", Revision 91250A-UM100-R, Broadcom
Corporation, 18 May 2004, Section 3: "Physical Description",
"Supported DRAM", p. 23
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
[paul.burton@mips.com: Remove GPL text from dma.c; SPDX tag covers it]
Signed-off-by: Paul Burton <paul.burton@mips.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Patchwork: https://patchwork.linux-mips.org/patch/21108/
References: cce335ae47e2 ("[MIPS] 64-bit Sibyte kernels need DMA32.")
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
2018-11-13 22:42:44 +00:00
|
|
|
select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-12-05 16:05:44 +00:00
|
|
|
config SNI_RM
|
|
|
|
bool "SNI RM200/300/400"
|
2019-10-09 13:27:14 +00:00
|
|
|
select ARC_MEMORY
|
|
|
|
select ARC_PROMLIB
|
2012-11-15 19:48:50 +00:00
|
|
|
select FW_ARC if CPU_LITTLE_ENDIAN
|
|
|
|
select FW_ARC32 if CPU_LITTLE_ENDIAN
|
2013-03-25 09:39:54 +00:00
|
|
|
select FW_SNIPROM if CPU_BIG_ENDIAN
|
2005-09-15 08:52:34 +00:00
|
|
|
select ARCH_MAY_HAVE_PC_FDC
|
2018-02-05 14:37:43 +00:00
|
|
|
select ARCH_MIGHT_HAVE_PC_PARPORT
|
2018-02-05 15:40:00 +00:00
|
|
|
select ARCH_MIGHT_HAVE_PC_SERIO
|
2005-04-16 22:20:36 +00:00
|
|
|
select BOOT_ELF32
|
2007-10-18 16:48:11 +00:00
|
|
|
select CEVT_R4K
|
2007-11-24 22:33:28 +00:00
|
|
|
select CSRC_R4K
|
2007-12-02 12:00:32 +00:00
|
|
|
select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
|
2005-04-16 22:20:36 +00:00
|
|
|
select DMA_NONCOHERENT
|
|
|
|
select GENERIC_ISA_DMA
|
2018-11-15 19:05:37 +00:00
|
|
|
select HAVE_EISA
|
2011-06-01 18:05:10 +00:00
|
|
|
select HAVE_PCSPKR_PLATFORM
|
2018-11-15 19:05:32 +00:00
|
|
|
select HAVE_PCI
|
2015-05-26 16:20:06 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2007-10-11 22:46:10 +00:00
|
|
|
select I8253
|
2005-04-16 22:20:36 +00:00
|
|
|
select I8259
|
|
|
|
select ISA
|
2006-06-13 11:59:01 +00:00
|
|
|
select SWAP_IO_SPACE if CPU_BIG_ENDIAN
|
2005-10-20 21:33:09 +00:00
|
|
|
select SYS_HAS_CPU_R4X00
|
2006-06-13 11:59:01 +00:00
|
|
|
select SYS_HAS_CPU_R5000
|
2006-12-28 17:22:32 +00:00
|
|
|
select SYS_HAS_CPU_R10000
|
2006-06-13 11:59:01 +00:00
|
|
|
select R5000_CPU_SCACHE
|
2007-03-01 11:56:43 +00:00
|
|
|
select SYS_HAS_EARLY_PRINTK
|
2005-09-03 22:56:21 +00:00
|
|
|
select SYS_SUPPORTS_32BIT_KERNEL
|
2013-01-17 02:53:19 +00:00
|
|
|
select SYS_SUPPORTS_64BIT_KERNEL
|
2006-06-13 11:59:01 +00:00
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
2005-08-10 15:17:11 +00:00
|
|
|
select SYS_SUPPORTS_HIGHMEM
|
2005-10-29 18:32:41 +00:00
|
|
|
select SYS_SUPPORTS_LITTLE_ENDIAN
|
2005-04-16 22:20:36 +00:00
|
|
|
help
|
2006-12-05 16:05:44 +00:00
|
|
|
The SNI RM200/300/400 are MIPS-based machines manufactured by
|
|
|
|
Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
|
2005-04-16 22:20:36 +00:00
|
|
|
Technology and now in turn merged with Fujitsu. Say Y here to
|
|
|
|
support this machine type.
|
|
|
|
|
2008-07-11 14:27:54 +00:00
|
|
|
config MACH_TX39XX
|
|
|
|
bool "Toshiba TX39 series based machines"
|
2005-10-29 18:32:41 +00:00
|
|
|
|
2008-07-11 14:27:54 +00:00
|
|
|
config MACH_TX49XX
|
|
|
|
bool "Toshiba TX49 series based machines"
|
2005-10-29 18:32:41 +00:00
|
|
|
|
2008-07-16 15:12:25 +00:00
|
|
|
config MIKROTIK_RB532
|
|
|
|
bool "Mikrotik RB532 boards"
|
|
|
|
select CEVT_R4K
|
|
|
|
select CSRC_R4K
|
|
|
|
select DMA_NONCOHERENT
|
2018-11-15 19:05:32 +00:00
|
|
|
select HAVE_PCI
|
2015-05-26 16:20:06 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2008-07-16 15:12:25 +00:00
|
|
|
select SYS_HAS_CPU_MIPS32_R1
|
|
|
|
select SYS_SUPPORTS_32BIT_KERNEL
|
|
|
|
select SYS_SUPPORTS_LITTLE_ENDIAN
|
|
|
|
select SWAP_IO_SPACE
|
|
|
|
select BOOT_RAW
|
2016-04-19 09:23:22 +00:00
|
|
|
select GPIOLIB
|
2014-01-14 17:54:38 +00:00
|
|
|
select MIPS_L1_CACHE_SHIFT_4
|
2008-07-16 15:12:25 +00:00
|
|
|
help
|
|
|
|
Support the Mikrotik(tm) RouterBoard 532 series,
|
|
|
|
based on the IDT RC32434 SoC.
|
|
|
|
|
2013-05-22 15:10:46 +00:00
|
|
|
config CAVIUM_OCTEON_SOC
|
|
|
|
bool "Cavium Networks Octeon SoC based boards"
|
2008-12-11 23:33:38 +00:00
|
|
|
select CEVT_R4K
|
2018-01-10 15:21:13 +00:00
|
|
|
select ARCH_HAS_PHYS_TO_DMA
|
2018-11-15 19:05:36 +00:00
|
|
|
select HAVE_RAPIDIO
|
2018-04-03 14:24:20 +00:00
|
|
|
select PHYS_ADDR_T_64BIT
|
2008-12-11 23:33:38 +00:00
|
|
|
select SYS_SUPPORTS_64BIT_KERNEL
|
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
2012-10-16 22:39:09 +00:00
|
|
|
select EDAC_SUPPORT
|
2015-05-21 17:59:31 +00:00
|
|
|
select EDAC_ATOMIC_SCRUB
|
2015-03-20 16:11:58 +00:00
|
|
|
select SYS_SUPPORTS_LITTLE_ENDIAN
|
|
|
|
select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
|
2008-12-11 23:33:38 +00:00
|
|
|
select SYS_HAS_EARLY_PRINTK
|
2009-02-02 19:30:59 +00:00
|
|
|
select SYS_HAS_CPU_CAVIUM_OCTEON
|
2018-11-15 19:05:32 +00:00
|
|
|
select HAVE_PCI
|
2020-03-25 07:45:29 +00:00
|
|
|
select HAVE_PLAT_DELAY
|
|
|
|
select HAVE_PLAT_FW_INIT_CMDLINE
|
|
|
|
select HAVE_PLAT_MEMCPY
|
2010-10-01 20:27:30 +00:00
|
|
|
select ZONE_DMA32
|
2011-08-20 15:44:00 +00:00
|
|
|
select HOLES_IN_ZONE
|
2016-04-19 09:23:22 +00:00
|
|
|
select GPIOLIB
|
2014-05-28 21:52:05 +00:00
|
|
|
select USE_OF
|
|
|
|
select ARCH_SPARSEMEM_ENABLE
|
|
|
|
select SYS_SUPPORTS_SMP
|
2017-09-28 17:34:04 +00:00
|
|
|
select NR_CPUS_DEFAULT_64
|
|
|
|
select MIPS_NR_CPU_NR_MAP_1024
|
2014-08-21 20:04:22 +00:00
|
|
|
select BUILTIN_DTB
|
2015-03-05 14:31:30 +00:00
|
|
|
select MTD_COMPLEX_MAPPINGS
|
2018-04-24 07:00:54 +00:00
|
|
|
select SWIOTLB
|
2016-12-13 20:25:37 +00:00
|
|
|
select SYS_SUPPORTS_RELOCATABLE
|
2008-12-11 23:33:38 +00:00
|
|
|
help
|
|
|
|
This option supports all of the Octeon reference boards from Cavium
|
|
|
|
Networks. It builds a kernel that dynamically determines the Octeon
|
|
|
|
CPU type and supports all known board reference implementations.
|
|
|
|
Some of the supported boards are:
|
|
|
|
EBT3000
|
|
|
|
EBH3000
|
|
|
|
EBH3100
|
|
|
|
Thunder
|
|
|
|
Kodama
|
|
|
|
Hikari
|
|
|
|
Say Y here for most Octeon reference boards.
|
|
|
|
|
2011-05-06 20:06:57 +00:00
|
|
|
config NLM_XLR_BOARD
|
|
|
|
bool "Netlogic XLR/XLS based systems"
|
|
|
|
select BOOT_ELF32
|
|
|
|
select NLM_COMMON
|
|
|
|
select SYS_HAS_CPU_XLR
|
|
|
|
select SYS_SUPPORTS_SMP
|
2018-11-15 19:05:32 +00:00
|
|
|
select HAVE_PCI
|
2011-05-06 20:06:57 +00:00
|
|
|
select SWAP_IO_SPACE
|
|
|
|
select SYS_SUPPORTS_32BIT_KERNEL
|
|
|
|
select SYS_SUPPORTS_64BIT_KERNEL
|
2018-04-03 14:24:20 +00:00
|
|
|
select PHYS_ADDR_T_64BIT
|
2011-05-06 20:06:57 +00:00
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
|
|
|
select SYS_SUPPORTS_HIGHMEM
|
|
|
|
select NR_CPUS_DEFAULT_32
|
|
|
|
select CEVT_R4K
|
|
|
|
select CSRC_R4K
|
2015-05-26 16:20:06 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2012-10-31 12:01:33 +00:00
|
|
|
select ZONE_DMA32 if 64BIT
|
2011-05-06 20:06:57 +00:00
|
|
|
select SYNC_R4K
|
|
|
|
select SYS_HAS_EARLY_PRINTK
|
2013-06-10 06:33:26 +00:00
|
|
|
select SYS_SUPPORTS_ZBOOT
|
|
|
|
select SYS_SUPPORTS_ZBOOT_UART16550
|
2011-05-06 20:06:57 +00:00
|
|
|
help
|
|
|
|
Support for systems based on Netlogic XLR and XLS processors.
|
|
|
|
Say Y here if you have a XLR or XLS based board.
|
|
|
|
|
2011-11-16 00:21:28 +00:00
|
|
|
config NLM_XLP_BOARD
|
|
|
|
bool "Netlogic XLP based systems"
|
|
|
|
select BOOT_ELF32
|
|
|
|
select NLM_COMMON
|
|
|
|
select SYS_HAS_CPU_XLP
|
|
|
|
select SYS_SUPPORTS_SMP
|
2018-11-15 19:05:32 +00:00
|
|
|
select HAVE_PCI
|
2011-11-16 00:21:28 +00:00
|
|
|
select SYS_SUPPORTS_32BIT_KERNEL
|
|
|
|
select SYS_SUPPORTS_64BIT_KERNEL
|
2018-04-03 14:24:20 +00:00
|
|
|
select PHYS_ADDR_T_64BIT
|
2016-04-19 09:23:22 +00:00
|
|
|
select GPIOLIB
|
2011-11-16 00:21:28 +00:00
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
|
|
|
select SYS_SUPPORTS_LITTLE_ENDIAN
|
|
|
|
select SYS_SUPPORTS_HIGHMEM
|
|
|
|
select NR_CPUS_DEFAULT_32
|
|
|
|
select CEVT_R4K
|
|
|
|
select CSRC_R4K
|
2015-05-26 16:20:06 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2012-10-31 12:01:33 +00:00
|
|
|
select ZONE_DMA32 if 64BIT
|
2011-11-16 00:21:28 +00:00
|
|
|
select SYNC_R4K
|
|
|
|
select SYS_HAS_EARLY_PRINTK
|
2012-07-13 16:23:22 +00:00
|
|
|
select USE_OF
|
2013-06-10 06:33:26 +00:00
|
|
|
select SYS_SUPPORTS_ZBOOT
|
|
|
|
select SYS_SUPPORTS_ZBOOT_UART16550
|
2011-11-16 00:21:28 +00:00
|
|
|
help
|
|
|
|
This board is based on Netlogic XLP Processor.
|
|
|
|
Say Y here if you have a XLP based board.
|
|
|
|
|
2005-10-29 18:32:41 +00:00
|
|
|
endchoice
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2008-09-16 17:12:16 +00:00
|
|
|
source "arch/mips/alchemy/Kconfig"
|
2014-10-28 23:18:39 +00:00
|
|
|
source "arch/mips/ath25/Kconfig"
|
2011-01-04 20:28:14 +00:00
|
|
|
source "arch/mips/ath79/Kconfig"
|
2011-07-22 23:20:13 +00:00
|
|
|
source "arch/mips/bcm47xx/Kconfig"
|
2009-08-18 12:23:37 +00:00
|
|
|
source "arch/mips/bcm63xx/Kconfig"
|
2014-12-25 17:49:20 +00:00
|
|
|
source "arch/mips/bmips/Kconfig"
|
2016-10-05 17:18:20 +00:00
|
|
|
source "arch/mips/generic/Kconfig"
|
2005-10-29 18:32:41 +00:00
|
|
|
source "arch/mips/jazz/Kconfig"
|
2010-06-19 04:08:19 +00:00
|
|
|
source "arch/mips/jz4740/Kconfig"
|
2011-03-30 07:27:48 +00:00
|
|
|
source "arch/mips/lantiq/Kconfig"
|
2016-01-14 01:15:39 +00:00
|
|
|
source "arch/mips/pic32/Kconfig"
|
2015-08-06 11:22:43 +00:00
|
|
|
source "arch/mips/pistachio/Kconfig"
|
2013-01-20 21:05:30 +00:00
|
|
|
source "arch/mips/ralink/Kconfig"
|
2005-02-07 01:27:14 +00:00
|
|
|
source "arch/mips/sgi-ip27/Kconfig"
|
2005-02-03 14:28:23 +00:00
|
|
|
source "arch/mips/sibyte/Kconfig"
|
2008-07-10 15:31:36 +00:00
|
|
|
source "arch/mips/txx9/Kconfig"
|
2005-10-29 18:32:41 +00:00
|
|
|
source "arch/mips/vr41xx/Kconfig"
|
2008-12-11 23:33:38 +00:00
|
|
|
source "arch/mips/cavium-octeon/Kconfig"
|
2019-10-20 14:43:14 +00:00
|
|
|
source "arch/mips/loongson2ef/Kconfig"
|
2015-04-21 02:00:35 +00:00
|
|
|
source "arch/mips/loongson32/Kconfig"
|
|
|
|
source "arch/mips/loongson64/Kconfig"
|
2011-05-06 20:06:57 +00:00
|
|
|
source "arch/mips/netlogic/Kconfig"
|
2005-02-03 14:28:23 +00:00
|
|
|
|
2005-10-29 18:32:41 +00:00
|
|
|
endmenu
|
|
|
|
|
[PATCH] bitops: mips: use generic bitops
- remove __{,test_and_}{set,clear,change}_bit() and test_bit()
- unless defined(CONFIG_CPU_MIPS32) or defined(CONFIG_CPU_MIPS64)
- remove __ffs()
- remove ffs()
- remove ffz()
- remove fls()
- remove fls64()
- remove find_{next,first}{,_zero}_bit()
- remove sched_find_first_bit()
- remove generic_hweight64()
- remove generic_hweight{32,16,8}()
- remove ext2_{set,clear,test,find_first_zero,find_next_zero}_bit()
- remove ext2_{set,clear}_bit_atomic()
- remove minix_{test,set,test_and_clear,test,find_first_zero}_bit()
Signed-off-by: Akinobu Mita <mita@miraclelinux.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-26 09:39:30 +00:00
|
|
|
config GENERIC_HWEIGHT
|
|
|
|
bool
|
|
|
|
default y
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config GENERIC_CALIBRATE_DELAY
|
|
|
|
bool
|
|
|
|
default y
|
|
|
|
|
2008-11-11 08:05:16 +00:00
|
|
|
config SCHED_OMIT_FRAME_POINTER
|
2006-04-04 04:11:45 +00:00
|
|
|
bool
|
|
|
|
default y
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
#
|
|
|
|
# Select some configuration options automatically based on user selections.
|
|
|
|
#
|
2012-11-15 19:48:50 +00:00
|
|
|
config FW_ARC
|
2005-04-16 22:20:36 +00:00
|
|
|
bool
|
|
|
|
|
2005-09-15 08:52:34 +00:00
|
|
|
config ARCH_MAY_HAVE_PC_FDC
|
|
|
|
bool
|
|
|
|
|
2007-06-14 21:55:31 +00:00
|
|
|
config BOOT_RAW
|
|
|
|
bool
|
|
|
|
|
2007-11-01 01:57:55 +00:00
|
|
|
config CEVT_BCM1480
|
|
|
|
bool
|
|
|
|
|
2008-04-25 03:11:44 +00:00
|
|
|
config CEVT_DS1287
|
|
|
|
bool
|
|
|
|
|
2007-10-22 10:43:15 +00:00
|
|
|
config CEVT_GT641XX
|
|
|
|
bool
|
|
|
|
|
2007-10-18 16:48:11 +00:00
|
|
|
config CEVT_R4K
|
|
|
|
bool
|
|
|
|
|
2007-11-01 01:57:55 +00:00
|
|
|
config CEVT_SB1250
|
|
|
|
bool
|
|
|
|
|
2007-10-24 16:34:09 +00:00
|
|
|
config CEVT_TXX9
|
|
|
|
bool
|
|
|
|
|
2007-11-01 01:57:55 +00:00
|
|
|
config CSRC_BCM1480
|
|
|
|
bool
|
|
|
|
|
2008-04-24 00:48:40 +00:00
|
|
|
config CSRC_IOASIC
|
|
|
|
bool
|
|
|
|
|
2007-11-24 22:33:28 +00:00
|
|
|
config CSRC_R4K
|
2020-05-21 14:07:23 +00:00
|
|
|
select CLOCKSOURCE_WATCHDOG if CPU_FREQ
|
2007-11-24 22:33:28 +00:00
|
|
|
bool
|
|
|
|
|
2007-11-01 01:57:55 +00:00
|
|
|
config CSRC_SB1250
|
|
|
|
bool
|
|
|
|
|
MIPS: VDSO: Add implementations of gettimeofday() and clock_gettime()
Add user-mode implementations of gettimeofday() and clock_gettime() to
the VDSO. This is currently usable with 2 clocksources: the CP0 count
register, which is accessible to user-mode via RDHWR on R2 and later
cores, or the MIPS Global Interrupt Controller (GIC) timer, which
provides a "user-mode visible" section containing a mirror of its
counter registers. This section must be mapped into user memory, which
is done below the VDSO data page.
When a supported clocksource is not in use, the VDSO functions will
return -ENOSYS, which causes libc to fall back on the standard syscall
path.
When support for neither of these clocksources is compiled into the
kernel at all, the VDSO still provides clock_gettime(), as the coarse
realtime/monotonic clocks can still be implemented. However,
gettimeofday() is not provided in this case as nothing can be done
without a suitable clocksource. This causes the symbol lookup to fail
in libc and it will then always use the standard syscall path.
This patch includes a workaround for a bug in QEMU which results in
RDHWR on the CP0 count register always returning a constant (incorrect)
value. A fix for this has been submitted, and the workaround can be
removed after the fix has been in stable releases for a reasonable
amount of time.
A simple performance test which calls gettimeofday() 1000 times in a
loop and calculates the average execution time gives the following
results on a Malta + I6400 (running at 20MHz):
- Syscall: ~31000 ns
- VDSO (GIC): ~15000 ns
- VDSO (CP0): ~9500 ns
[markos.chandras@imgtec.com:
- Minor code re-arrangements in order for mappings to be made
in the order they appear to the process' address space.
- Move do_{monotonic, realtime} outside of the MIPS_CLOCK_VSYSCALL ifdef
- Use gic_get_usm_range so we can do the GIC mapping in the
arch/mips/kernel/vdso instead of the GIC irqchip driver]
Signed-off-by: Alex Smith <alex.smith@imgtec.com>
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11338/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-10-21 08:57:44 +00:00
|
|
|
config MIPS_CLOCK_VSYSCALL
|
|
|
|
def_bool CSRC_R4K || CLKSRC_MIPS_GIC
|
|
|
|
|
2008-04-04 15:55:41 +00:00
|
|
|
config GPIO_TXX9
|
2016-04-19 09:23:22 +00:00
|
|
|
select GPIOLIB
|
2008-04-04 15:55:41 +00:00
|
|
|
bool
|
|
|
|
|
2012-11-15 19:48:50 +00:00
|
|
|
config FW_CFE
|
2007-09-05 06:58:26 +00:00
|
|
|
bool
|
|
|
|
|
2015-07-29 20:44:53 +00:00
|
|
|
config ARCH_SUPPORTS_UPROBES
|
|
|
|
bool
|
|
|
|
|
2013-09-27 12:41:44 +00:00
|
|
|
config DMA_MAYBE_COHERENT
|
2018-08-19 12:53:20 +00:00
|
|
|
select ARCH_HAS_DMA_COHERENCE_H
|
2013-09-27 12:41:44 +00:00
|
|
|
select DMA_NONCOHERENT
|
|
|
|
bool
|
|
|
|
|
2016-10-05 17:18:16 +00:00
|
|
|
config DMA_PERDEV_COHERENT
|
|
|
|
bool
|
2019-01-07 18:36:20 +00:00
|
|
|
select ARCH_HAS_SETUP_DMA_OPS
|
2018-08-16 13:47:53 +00:00
|
|
|
select DMA_NONCOHERENT
|
2016-10-05 17:18:16 +00:00
|
|
|
|
2005-09-03 22:56:19 +00:00
|
|
|
config DMA_NONCOHERENT
|
|
|
|
bool
|
2019-08-26 07:22:13 +00:00
|
|
|
#
|
|
|
|
# MIPS allows mixing "slightly different" Cacheability and Coherency
|
|
|
|
# Attribute bits. It is believed that the uncached access through
|
|
|
|
# KSEG1 and the implementation specific "uncached accelerated" used
|
|
|
|
# by pgprot_writcombine can be mixed, and the latter sometimes provides
|
|
|
|
# significant advantages.
|
|
|
|
#
|
2019-08-26 07:03:44 +00:00
|
|
|
select ARCH_HAS_DMA_WRITE_COMBINE
|
2020-02-21 23:55:43 +00:00
|
|
|
select ARCH_HAS_DMA_PREP_COHERENT
|
2018-06-15 11:08:46 +00:00
|
|
|
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
|
2020-02-21 23:55:43 +00:00
|
|
|
select ARCH_HAS_DMA_SET_UNCACHED
|
2019-10-29 10:01:37 +00:00
|
|
|
select DMA_NONCOHERENT_MMAP
|
2018-06-15 11:08:46 +00:00
|
|
|
select DMA_NONCOHERENT_CACHE_SYNC
|
2019-10-29 10:01:37 +00:00
|
|
|
select NEED_DMA_MAP_STATE
|
2005-09-03 22:56:19 +00:00
|
|
|
|
2007-03-01 11:56:43 +00:00
|
|
|
config SYS_HAS_EARLY_PRINTK
|
2005-04-16 22:20:36 +00:00
|
|
|
bool
|
|
|
|
|
2009-06-23 09:00:31 +00:00
|
|
|
config SYS_SUPPORTS_HOTPLUG_CPU
|
2007-08-07 13:52:17 +00:00
|
|
|
bool
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config MIPS_BONITO64
|
|
|
|
bool
|
|
|
|
|
|
|
|
config MIPS_MSC
|
|
|
|
bool
|
|
|
|
|
2008-04-28 16:14:26 +00:00
|
|
|
config SYNC_R4K
|
|
|
|
bool
|
|
|
|
|
2014-04-07 22:39:19 +00:00
|
|
|
config NO_IOPORT_MAP
|
2007-05-29 14:08:07 +00:00
|
|
|
def_bool n
|
|
|
|
|
2014-11-13 11:25:27 +00:00
|
|
|
config GENERIC_CSUM
|
2020-01-22 10:58:50 +00:00
|
|
|
def_bool CPU_NO_LOAD_STORE_LR
|
2014-11-13 11:25:27 +00:00
|
|
|
|
2007-08-24 15:48:30 +00:00
|
|
|
config GENERIC_ISA_DMA
|
|
|
|
bool
|
|
|
|
select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
|
2010-10-18 03:55:21 +00:00
|
|
|
select ISA_DMA_API
|
2007-08-24 15:48:30 +00:00
|
|
|
|
2006-11-30 01:14:51 +00:00
|
|
|
config GENERIC_ISA_DMA_SUPPORT_BROKEN
|
|
|
|
bool
|
2007-08-24 15:48:30 +00:00
|
|
|
select GENERIC_ISA_DMA
|
2006-11-30 01:14:51 +00:00
|
|
|
|
2020-03-25 07:45:29 +00:00
|
|
|
config HAVE_PLAT_DELAY
|
|
|
|
bool
|
|
|
|
|
|
|
|
config HAVE_PLAT_FW_INIT_CMDLINE
|
|
|
|
bool
|
|
|
|
|
|
|
|
config HAVE_PLAT_MEMCPY
|
|
|
|
bool
|
|
|
|
|
2010-10-18 03:55:21 +00:00
|
|
|
config ISA_DMA_API
|
|
|
|
bool
|
|
|
|
|
2011-08-20 15:44:00 +00:00
|
|
|
config HOLES_IN_ZONE
|
|
|
|
bool
|
|
|
|
|
2016-03-31 09:05:39 +00:00
|
|
|
config SYS_SUPPORTS_RELOCATABLE
|
|
|
|
bool
|
|
|
|
help
|
2019-03-11 15:54:27 +00:00
|
|
|
Selected if the platform supports relocating the kernel.
|
|
|
|
The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
|
|
|
|
to allow access to command line and entropy sources.
|
2016-03-31 09:05:39 +00:00
|
|
|
|
2017-06-13 22:28:46 +00:00
|
|
|
config MIPS_CBPF_JIT
|
|
|
|
def_bool y
|
|
|
|
depends on BPF_JIT && HAVE_CBPF_JIT
|
|
|
|
|
|
|
|
config MIPS_EBPF_JIT
|
|
|
|
def_bool y
|
|
|
|
depends on BPF_JIT && HAVE_EBPF_JIT
|
|
|
|
|
|
|
|
|
2005-10-29 18:32:41 +00:00
|
|
|
#
|
2012-04-13 15:14:11 +00:00
|
|
|
# Endianness selection. Sufficiently obscure so many users don't know what to
|
2005-10-29 18:32:41 +00:00
|
|
|
# answer,so we try hard to limit the available choices. Also the use of a
|
|
|
|
# choice statement should be more obvious to the user.
|
|
|
|
#
|
|
|
|
choice
|
2012-04-13 15:14:11 +00:00
|
|
|
prompt "Endianness selection"
|
2005-04-16 22:20:36 +00:00
|
|
|
help
|
|
|
|
Some MIPS machines can be configured for either little or big endian
|
2005-10-29 18:32:41 +00:00
|
|
|
byte order. These modes require different kernels and a different
|
2006-11-30 04:22:59 +00:00
|
|
|
Linux distribution. In general there is one preferred byteorder for a
|
2005-10-29 18:32:41 +00:00
|
|
|
particular system but some systems are just as commonly used in the
|
2007-05-09 05:12:20 +00:00
|
|
|
one or the other endianness.
|
2005-10-29 18:32:41 +00:00
|
|
|
|
|
|
|
config CPU_BIG_ENDIAN
|
|
|
|
bool "Big endian"
|
|
|
|
depends on SYS_SUPPORTS_BIG_ENDIAN
|
|
|
|
|
|
|
|
config CPU_LITTLE_ENDIAN
|
|
|
|
bool "Little endian"
|
|
|
|
depends on SYS_SUPPORTS_LITTLE_ENDIAN
|
|
|
|
|
|
|
|
endchoice
|
|
|
|
|
2010-07-24 01:41:43 +00:00
|
|
|
config EXPORT_UASM
|
|
|
|
bool
|
|
|
|
|
2007-02-09 17:08:58 +00:00
|
|
|
config SYS_SUPPORTS_APM_EMULATION
|
|
|
|
bool
|
|
|
|
|
2005-10-29 18:32:41 +00:00
|
|
|
config SYS_SUPPORTS_BIG_ENDIAN
|
|
|
|
bool
|
|
|
|
|
|
|
|
config SYS_SUPPORTS_LITTLE_ENDIAN
|
|
|
|
bool
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2009-05-28 00:47:46 +00:00
|
|
|
config SYS_SUPPORTS_HUGETLBFS
|
|
|
|
bool
|
2019-07-15 21:40:01 +00:00
|
|
|
depends on CPU_SUPPORTS_HUGEPAGES
|
2009-05-28 00:47:46 +00:00
|
|
|
default y
|
|
|
|
|
2012-10-16 22:48:10 +00:00
|
|
|
config MIPS_HUGE_TLB_SUPPORT
|
|
|
|
def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config IRQ_CPU_RM7K
|
|
|
|
bool
|
|
|
|
|
2007-06-14 21:55:31 +00:00
|
|
|
config IRQ_MSP_SLP
|
|
|
|
bool
|
|
|
|
|
|
|
|
config IRQ_MSP_CIC
|
|
|
|
bool
|
|
|
|
|
2007-08-02 14:35:53 +00:00
|
|
|
config IRQ_TXX9
|
|
|
|
bool
|
|
|
|
|
2007-09-13 14:51:26 +00:00
|
|
|
config IRQ_GT641XX
|
|
|
|
bool
|
|
|
|
|
2007-03-14 12:51:26 +00:00
|
|
|
config PCI_GT64XXX_PCI0
|
2005-04-16 22:20:36 +00:00
|
|
|
bool
|
|
|
|
|
2019-05-07 21:09:13 +00:00
|
|
|
config PCI_XTALK_BRIDGE
|
|
|
|
bool
|
|
|
|
|
2007-06-14 21:55:31 +00:00
|
|
|
config NO_EXCEPT_FILL
|
|
|
|
bool
|
|
|
|
|
2008-06-16 14:49:21 +00:00
|
|
|
config SOC_PNX833X
|
|
|
|
bool
|
|
|
|
select CEVT_R4K
|
|
|
|
select CSRC_R4K
|
2015-05-26 16:20:06 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2008-06-16 14:49:21 +00:00
|
|
|
select DMA_NONCOHERENT
|
|
|
|
select SYS_HAS_CPU_MIPS32_R2
|
|
|
|
select SYS_SUPPORTS_32BIT_KERNEL
|
|
|
|
select SYS_SUPPORTS_LITTLE_ENDIAN
|
|
|
|
select SYS_SUPPORTS_BIG_ENDIAN
|
2014-04-28 23:49:24 +00:00
|
|
|
select SYS_SUPPORTS_MIPS16
|
2008-06-16 14:49:21 +00:00
|
|
|
select CPU_MIPSR2_IRQ_VI
|
|
|
|
|
|
|
|
config SOC_PNX8335
|
|
|
|
bool
|
|
|
|
select SOC_PNX833X
|
|
|
|
|
2014-11-13 13:32:03 +00:00
|
|
|
config MIPS_SPRAM
|
|
|
|
bool
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config SWAP_IO_SPACE
|
|
|
|
bool
|
|
|
|
|
2007-12-02 12:00:32 +00:00
|
|
|
config SGI_HAS_INDYDOG
|
|
|
|
bool
|
|
|
|
|
2008-07-10 18:29:55 +00:00
|
|
|
config SGI_HAS_HAL2
|
|
|
|
bool
|
|
|
|
|
2007-12-02 12:00:32 +00:00
|
|
|
config SGI_HAS_SEEQ
|
|
|
|
bool
|
|
|
|
|
|
|
|
config SGI_HAS_WD93
|
|
|
|
bool
|
|
|
|
|
|
|
|
config SGI_HAS_ZILOG
|
|
|
|
bool
|
|
|
|
|
|
|
|
config SGI_HAS_I8042
|
|
|
|
bool
|
|
|
|
|
|
|
|
config DEFAULT_SGI_PARTITION
|
|
|
|
bool
|
|
|
|
|
2012-11-15 19:48:50 +00:00
|
|
|
config FW_ARC32
|
2005-10-29 18:32:41 +00:00
|
|
|
bool
|
|
|
|
|
2013-03-25 09:39:54 +00:00
|
|
|
config FW_SNIPROM
|
2008-01-04 22:31:07 +00:00
|
|
|
bool
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config BOOT_ELF32
|
|
|
|
bool
|
|
|
|
|
2014-01-14 17:54:38 +00:00
|
|
|
config MIPS_L1_CACHE_SHIFT_4
|
|
|
|
bool
|
|
|
|
|
|
|
|
config MIPS_L1_CACHE_SHIFT_5
|
|
|
|
bool
|
|
|
|
|
|
|
|
config MIPS_L1_CACHE_SHIFT_6
|
|
|
|
bool
|
|
|
|
|
|
|
|
config MIPS_L1_CACHE_SHIFT_7
|
|
|
|
bool
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config MIPS_L1_CACHE_SHIFT
|
|
|
|
int
|
2014-01-14 17:54:39 +00:00
|
|
|
default "7" if MIPS_L1_CACHE_SHIFT_7
|
2014-12-25 17:49:09 +00:00
|
|
|
default "6" if MIPS_L1_CACHE_SHIFT_6
|
|
|
|
default "5" if MIPS_L1_CACHE_SHIFT_5
|
|
|
|
default "4" if MIPS_L1_CACHE_SHIFT_4
|
2005-04-16 22:20:36 +00:00
|
|
|
default "5"
|
|
|
|
|
2019-10-22 16:13:15 +00:00
|
|
|
config ARC_CMDLINE_ONLY
|
|
|
|
bool
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config ARC_CONSOLE
|
|
|
|
bool "ARC console support"
|
2007-12-02 12:00:32 +00:00
|
|
|
depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
config ARC_MEMORY
|
|
|
|
bool
|
|
|
|
|
|
|
|
config ARC_PROMLIB
|
|
|
|
bool
|
|
|
|
|
2012-11-15 19:48:50 +00:00
|
|
|
config FW_ARC64
|
2005-04-16 22:20:36 +00:00
|
|
|
bool
|
|
|
|
|
|
|
|
config BOOT_ELF64
|
|
|
|
bool
|
|
|
|
|
|
|
|
menu "CPU selection"
|
|
|
|
|
|
|
|
choice
|
|
|
|
prompt "CPU type"
|
|
|
|
default CPU_R4X00
|
|
|
|
|
2019-10-20 14:43:13 +00:00
|
|
|
config CPU_LOONGSON64
|
MIPS: Loongson: Unify LOONGSON3/LOONGSON64 Kconfig usage
There are mixed LOONGSON3/LOONGSON64 usages in recently changes, let's
establish some rules:
1, In Kconfig symbols, we only use CPU_LOONGSON64, MACH_LOONGSON64 and
SYS_HAS_CPU_LOONGSON64, all other derived symbols use "LOONGSON3" since
they all not widely-used symbols and sometimes not suitable for all
64-bit Loongson processors. E.g., we use symbols LOONGSON3_ENHANCEMENT,
CPU_LOONGSON3_WORKAROUNDS, etc.
2, Hide GSx64/GSx64E in Kconfig title since it is not useful for
general users. However, in the full description we use a more detailed
manner. E.g., GS264/GS464/GS464E/GS464V.
All Kconfig titles and descriptions of Loongson processors and machines
have also been updated in this patch for consistency.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@linux-mips.org
Cc: linux-mips@vger.kernel.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: Huacai Chen <chenhuacai@gmail.com>
2019-11-04 06:11:21 +00:00
|
|
|
bool "Loongson 64-bit CPU"
|
2019-10-20 14:43:13 +00:00
|
|
|
depends on SYS_HAS_CPU_LOONGSON64
|
2018-06-15 11:08:41 +00:00
|
|
|
select ARCH_HAS_PHYS_TO_DMA
|
2020-01-13 10:15:00 +00:00
|
|
|
select CPU_MIPSR2
|
|
|
|
select CPU_HAS_PREFETCH
|
2014-03-21 10:44:07 +00:00
|
|
|
select CPU_SUPPORTS_64BIT_KERNEL
|
|
|
|
select CPU_SUPPORTS_HIGHMEM
|
|
|
|
select CPU_SUPPORTS_HUGEPAGES
|
MIPS: Loongson: Add Loongson-3A R4 basic support
All Loongson-3 CPU family:
Code-name Brand-name PRId
Loongson-3A R1 Loongson-3A1000 0x6305
Loongson-3A R2 Loongson-3A2000 0x6308
Loongson-3A R2.1 Loongson-3A2000 0x630c
Loongson-3A R3 Loongson-3A3000 0x6309
Loongson-3A R3.1 Loongson-3A3000 0x630d
Loongson-3A R4 Loongson-3A4000 0xc000
Loongson-3B R1 Loongson-3B1000 0x6306
Loongson-3B R2 Loongson-3B1500 0x6307
Features of R4 revision of Loongson-3A:
- All R2/R3 features, including SFB, V-Cache, FTLB, RIXI, DSP, etc.
- Support variable ASID bits.
- Support MSA and VZ extensions.
- Support CPUCFG (CPU config) and CSR (Control and Status Register)
extensions.
- 64 entries of VTLB (classic TLB), 2048 entries of FTLB (8-way
set-associative).
Now 64-bit Loongson processors has three types of PRID.IMP: 0x6300 is
the classic one so we call it PRID_IMP_LOONGSON_64C (e.g., Loongson-2E/
2F/3A1000/3B1000/3B1500/3A2000/3A3000), 0x6100 is for some processors
which has reduced capabilities so we call it PRID_IMP_LOONGSON_64R
(e.g., Loongson-2K), 0xc000 is supposed to cover all new processors in
general (e.g., Loongson-3A4000+) so we call it PRID_IMP_LOONGSON_64G.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: linux-mips@vger.kernel.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: Huacai Chen <chenhuacai@gmail.com>
2019-09-21 13:50:27 +00:00
|
|
|
select CPU_SUPPORTS_MSA
|
2020-01-13 10:15:00 +00:00
|
|
|
select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT
|
|
|
|
select CPU_MIPSR2_IRQ_VI
|
2014-03-21 10:44:07 +00:00
|
|
|
select WEAK_ORDERING
|
|
|
|
select WEAK_REORDERING_BEYOND_LLSC
|
MIPS: Loongson: Add Loongson-3A R4 basic support
All Loongson-3 CPU family:
Code-name Brand-name PRId
Loongson-3A R1 Loongson-3A1000 0x6305
Loongson-3A R2 Loongson-3A2000 0x6308
Loongson-3A R2.1 Loongson-3A2000 0x630c
Loongson-3A R3 Loongson-3A3000 0x6309
Loongson-3A R3.1 Loongson-3A3000 0x630d
Loongson-3A R4 Loongson-3A4000 0xc000
Loongson-3B R1 Loongson-3B1000 0x6306
Loongson-3B R2 Loongson-3B1500 0x6307
Features of R4 revision of Loongson-3A:
- All R2/R3 features, including SFB, V-Cache, FTLB, RIXI, DSP, etc.
- Support variable ASID bits.
- Support MSA and VZ extensions.
- Support CPUCFG (CPU config) and CSR (Control and Status Register)
extensions.
- 64 entries of VTLB (classic TLB), 2048 entries of FTLB (8-way
set-associative).
Now 64-bit Loongson processors has three types of PRID.IMP: 0x6300 is
the classic one so we call it PRID_IMP_LOONGSON_64C (e.g., Loongson-2E/
2F/3A1000/3B1000/3B1500/3A2000/3A3000), 0x6100 is for some processors
which has reduced capabilities so we call it PRID_IMP_LOONGSON_64R
(e.g., Loongson-2K), 0xc000 is supposed to cover all new processors in
general (e.g., Loongson-3A4000+) so we call it PRID_IMP_LOONGSON_64G.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: linux-mips@vger.kernel.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: Huacai Chen <chenhuacai@gmail.com>
2019-09-21 13:50:27 +00:00
|
|
|
select MIPS_ASID_BITS_VARIABLE
|
2016-03-03 01:45:09 +00:00
|
|
|
select MIPS_PGD_C0_CONTEXT
|
2017-03-16 13:00:28 +00:00
|
|
|
select MIPS_L1_CACHE_SHIFT_6
|
2016-04-19 09:23:22 +00:00
|
|
|
select GPIOLIB
|
2018-04-24 07:00:54 +00:00
|
|
|
select SWIOTLB
|
2020-05-23 07:56:41 +00:00
|
|
|
select HAVE_KVM
|
2014-03-21 10:44:07 +00:00
|
|
|
help
|
MIPS: Loongson: Unify LOONGSON3/LOONGSON64 Kconfig usage
There are mixed LOONGSON3/LOONGSON64 usages in recently changes, let's
establish some rules:
1, In Kconfig symbols, we only use CPU_LOONGSON64, MACH_LOONGSON64 and
SYS_HAS_CPU_LOONGSON64, all other derived symbols use "LOONGSON3" since
they all not widely-used symbols and sometimes not suitable for all
64-bit Loongson processors. E.g., we use symbols LOONGSON3_ENHANCEMENT,
CPU_LOONGSON3_WORKAROUNDS, etc.
2, Hide GSx64/GSx64E in Kconfig title since it is not useful for
general users. However, in the full description we use a more detailed
manner. E.g., GS264/GS464/GS464E/GS464V.
All Kconfig titles and descriptions of Loongson processors and machines
have also been updated in this patch for consistency.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@linux-mips.org
Cc: linux-mips@vger.kernel.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: Huacai Chen <chenhuacai@gmail.com>
2019-11-04 06:11:21 +00:00
|
|
|
The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor
|
|
|
|
cores implements the MIPS64R2 instruction set with many extensions,
|
|
|
|
including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000,
|
|
|
|
3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old
|
|
|
|
Loongson-2E/2F is not covered here and will be removed in future.
|
|
|
|
|
|
|
|
config LOONGSON3_ENHANCEMENT
|
|
|
|
bool "New Loongson-3 CPU Enhancements"
|
MIPS: Loongson-3: Introduce CONFIG_LOONGSON3_ENHANCEMENT
New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A R1,
Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as FTLB,
L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User Local
register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer), Fast
TLB refill support, etc.
This patch introduce a config option, CONFIG_LOONGSON3_ENHANCEMENT, to
enable those enhancements which are not probed at run time. If you want
a generic kernel to run on all Loongson 3 machines, please say 'N'
here. If you want a high-performance kernel to run on new Loongson 3
machines only, please say 'Y' here.
Some additional explanations:
1) SFB locates between core and L1 cache, it causes memory access out
of order, so writel/outl (and other similar functions) need a I/O
reorder barrier.
2) Loongson 3 has a bug that di instruction can not save the irqflag,
so arch_local_irq_save() is modified. Since CPU_MIPSR2 is selected
by CONFIG_LOONGSON3_ENHANCEMENT, generic kernel doesn't use ei/di
at all.
3) CPU_HAS_PREFETCH is selected by CONFIG_LOONGSON3_ENHANCEMENT, so
MIPS_CPU_PREFETCH (used by uasm) probing is also put in this patch.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Steven J . Hill <sjhill@realitydiluted.com>
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12755/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-03-03 01:45:13 +00:00
|
|
|
default n
|
2019-10-20 14:43:13 +00:00
|
|
|
depends on CPU_LOONGSON64
|
MIPS: Loongson-3: Introduce CONFIG_LOONGSON3_ENHANCEMENT
New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A R1,
Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as FTLB,
L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User Local
register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer), Fast
TLB refill support, etc.
This patch introduce a config option, CONFIG_LOONGSON3_ENHANCEMENT, to
enable those enhancements which are not probed at run time. If you want
a generic kernel to run on all Loongson 3 machines, please say 'N'
here. If you want a high-performance kernel to run on new Loongson 3
machines only, please say 'Y' here.
Some additional explanations:
1) SFB locates between core and L1 cache, it causes memory access out
of order, so writel/outl (and other similar functions) need a I/O
reorder barrier.
2) Loongson 3 has a bug that di instruction can not save the irqflag,
so arch_local_irq_save() is modified. Since CPU_MIPSR2 is selected
by CONFIG_LOONGSON3_ENHANCEMENT, generic kernel doesn't use ei/di
at all.
3) CPU_HAS_PREFETCH is selected by CONFIG_LOONGSON3_ENHANCEMENT, so
MIPS_CPU_PREFETCH (used by uasm) probing is also put in this patch.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Steven J . Hill <sjhill@realitydiluted.com>
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12755/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-03-03 01:45:13 +00:00
|
|
|
help
|
MIPS: Loongson: Unify LOONGSON3/LOONGSON64 Kconfig usage
There are mixed LOONGSON3/LOONGSON64 usages in recently changes, let's
establish some rules:
1, In Kconfig symbols, we only use CPU_LOONGSON64, MACH_LOONGSON64 and
SYS_HAS_CPU_LOONGSON64, all other derived symbols use "LOONGSON3" since
they all not widely-used symbols and sometimes not suitable for all
64-bit Loongson processors. E.g., we use symbols LOONGSON3_ENHANCEMENT,
CPU_LOONGSON3_WORKAROUNDS, etc.
2, Hide GSx64/GSx64E in Kconfig title since it is not useful for
general users. However, in the full description we use a more detailed
manner. E.g., GS264/GS464/GS464E/GS464V.
All Kconfig titles and descriptions of Loongson processors and machines
have also been updated in this patch for consistency.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@linux-mips.org
Cc: linux-mips@vger.kernel.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: Huacai Chen <chenhuacai@gmail.com>
2019-11-04 06:11:21 +00:00
|
|
|
New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A
|
MIPS: Loongson-3: Introduce CONFIG_LOONGSON3_ENHANCEMENT
New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A R1,
Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as FTLB,
L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User Local
register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer), Fast
TLB refill support, etc.
This patch introduce a config option, CONFIG_LOONGSON3_ENHANCEMENT, to
enable those enhancements which are not probed at run time. If you want
a generic kernel to run on all Loongson 3 machines, please say 'N'
here. If you want a high-performance kernel to run on new Loongson 3
machines only, please say 'Y' here.
Some additional explanations:
1) SFB locates between core and L1 cache, it causes memory access out
of order, so writel/outl (and other similar functions) need a I/O
reorder barrier.
2) Loongson 3 has a bug that di instruction can not save the irqflag,
so arch_local_irq_save() is modified. Since CPU_MIPSR2 is selected
by CONFIG_LOONGSON3_ENHANCEMENT, generic kernel doesn't use ei/di
at all.
3) CPU_HAS_PREFETCH is selected by CONFIG_LOONGSON3_ENHANCEMENT, so
MIPS_CPU_PREFETCH (used by uasm) probing is also put in this patch.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Steven J . Hill <sjhill@realitydiluted.com>
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12755/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-03-03 01:45:13 +00:00
|
|
|
R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
|
2019-10-20 14:43:13 +00:00
|
|
|
FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User
|
MIPS: Loongson-3: Introduce CONFIG_LOONGSON3_ENHANCEMENT
New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A R1,
Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as FTLB,
L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User Local
register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer), Fast
TLB refill support, etc.
This patch introduce a config option, CONFIG_LOONGSON3_ENHANCEMENT, to
enable those enhancements which are not probed at run time. If you want
a generic kernel to run on all Loongson 3 machines, please say 'N'
here. If you want a high-performance kernel to run on new Loongson 3
machines only, please say 'Y' here.
Some additional explanations:
1) SFB locates between core and L1 cache, it causes memory access out
of order, so writel/outl (and other similar functions) need a I/O
reorder barrier.
2) Loongson 3 has a bug that di instruction can not save the irqflag,
so arch_local_irq_save() is modified. Since CPU_MIPSR2 is selected
by CONFIG_LOONGSON3_ENHANCEMENT, generic kernel doesn't use ei/di
at all.
3) CPU_HAS_PREFETCH is selected by CONFIG_LOONGSON3_ENHANCEMENT, so
MIPS_CPU_PREFETCH (used by uasm) probing is also put in this patch.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Steven J . Hill <sjhill@realitydiluted.com>
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12755/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-03-03 01:45:13 +00:00
|
|
|
Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
|
|
|
|
Fast TLB refill support, etc.
|
|
|
|
|
|
|
|
This option enable those enhancements which are not probed at run
|
|
|
|
time. If you want a generic kernel to run on all Loongson 3 machines,
|
|
|
|
please say 'N' here. If you want a high-performance kernel to run on
|
MIPS: Loongson: Unify LOONGSON3/LOONGSON64 Kconfig usage
There are mixed LOONGSON3/LOONGSON64 usages in recently changes, let's
establish some rules:
1, In Kconfig symbols, we only use CPU_LOONGSON64, MACH_LOONGSON64 and
SYS_HAS_CPU_LOONGSON64, all other derived symbols use "LOONGSON3" since
they all not widely-used symbols and sometimes not suitable for all
64-bit Loongson processors. E.g., we use symbols LOONGSON3_ENHANCEMENT,
CPU_LOONGSON3_WORKAROUNDS, etc.
2, Hide GSx64/GSx64E in Kconfig title since it is not useful for
general users. However, in the full description we use a more detailed
manner. E.g., GS264/GS464/GS464E/GS464V.
All Kconfig titles and descriptions of Loongson processors and machines
have also been updated in this patch for consistency.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@linux-mips.org
Cc: linux-mips@vger.kernel.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: Huacai Chen <chenhuacai@gmail.com>
2019-11-04 06:11:21 +00:00
|
|
|
new Loongson-3 machines only, please say 'Y' here.
|
MIPS: Loongson-3: Introduce CONFIG_LOONGSON3_ENHANCEMENT
New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A R1,
Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as FTLB,
L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User Local
register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer), Fast
TLB refill support, etc.
This patch introduce a config option, CONFIG_LOONGSON3_ENHANCEMENT, to
enable those enhancements which are not probed at run time. If you want
a generic kernel to run on all Loongson 3 machines, please say 'N'
here. If you want a high-performance kernel to run on new Loongson 3
machines only, please say 'Y' here.
Some additional explanations:
1) SFB locates between core and L1 cache, it causes memory access out
of order, so writel/outl (and other similar functions) need a I/O
reorder barrier.
2) Loongson 3 has a bug that di instruction can not save the irqflag,
so arch_local_irq_save() is modified. Since CPU_MIPSR2 is selected
by CONFIG_LOONGSON3_ENHANCEMENT, generic kernel doesn't use ei/di
at all.
3) CPU_HAS_PREFETCH is selected by CONFIG_LOONGSON3_ENHANCEMENT, so
MIPS_CPU_PREFETCH (used by uasm) probing is also put in this patch.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Steven J . Hill <sjhill@realitydiluted.com>
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12755/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-03-03 01:45:13 +00:00
|
|
|
|
MIPS: Loongson: Introduce and use loongson_llsc_mb()
On the Loongson-2G/2H/3A/3B there is a hardware flaw that ll/sc and
lld/scd is very weak ordering. We should add sync instructions "before
each ll/lld" and "at the branch-target between ll/sc" to workaround.
Otherwise, this flaw will cause deadlock occasionally (e.g. when doing
heavy load test with LTP).
Below is the explaination of CPU designer:
"For Loongson 3 family, when a memory access instruction (load, store,
or prefetch)'s executing occurs between the execution of LL and SC, the
success or failure of SC is not predictable. Although programmer would
not insert memory access instructions between LL and SC, the memory
instructions before LL in program-order, may dynamically executed
between the execution of LL/SC, so a memory fence (SYNC) is needed
before LL/LLD to avoid this situation.
Since Loongson-3A R2 (3A2000), we have improved our hardware design to
handle this case. But we later deduce a rarely circumstance that some
speculatively executed memory instructions due to branch misprediction
between LL/SC still fall into the above case, so a memory fence (SYNC)
at branch-target (if its target is not between LL/SC) is needed for
Loongson 3A1000, 3B1500, 3A2000 and 3A3000.
Our processor is continually evolving and we aim to to remove all these
workaround-SYNCs around LL/SC for new-come processor."
Here is an example:
Both cpu1 and cpu2 simutaneously run atomic_add by 1 on same atomic var,
this bug cause both 'sc' run by two cpus (in atomic_add) succeed at same
time('sc' return 1), and the variable is only *added by 1*, sometimes,
which is wrong and unacceptable(it should be added by 2).
Why disable fix-loongson3-llsc in compiler?
Because compiler fix will cause problems in kernel's __ex_table section.
This patch fix all the cases in kernel, but:
+. the fix at the end of futex_atomic_cmpxchg_inatomic is for branch-target
of 'bne', there other cases which smp_mb__before_llsc() and smp_llsc_mb() fix
the ll and branch-target coincidently such as atomic_sub_if_positive/
cmpxchg/xchg, just like this one.
+. Loongson 3 does support CONFIG_EDAC_ATOMIC_SCRUB, so no need to touch
edac.h
+. local_ops and cmpxchg_local should not be affected by this bug since
only the owner can write.
+. mips_atomic_set for syscall.c is deprecated and rarely used, just let
it go
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Huang Pei <huangpei@loongson.cn>
[paul.burton@mips.com:
- Simplify the addition of -mno-fix-loongson3-llsc to cflags, and add
a comment describing why it's there.
- Make loongson_llsc_mb() a no-op when
CONFIG_CPU_LOONGSON3_WORKAROUNDS=n, rather than a compiler memory
barrier.
- Add a comment describing the bug & how loongson_llsc_mb() helps
in asm/barrier.h.]
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: ambrosehua@gmail.com
Cc: Steven J . Hill <Steven.Hill@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: Li Xuefeng <lixuefeng@loongson.cn>
Cc: Xu Chenghua <xuchenghua@loongson.cn>
2019-01-15 08:04:54 +00:00
|
|
|
config CPU_LOONGSON3_WORKAROUNDS
|
MIPS: Loongson: Unify LOONGSON3/LOONGSON64 Kconfig usage
There are mixed LOONGSON3/LOONGSON64 usages in recently changes, let's
establish some rules:
1, In Kconfig symbols, we only use CPU_LOONGSON64, MACH_LOONGSON64 and
SYS_HAS_CPU_LOONGSON64, all other derived symbols use "LOONGSON3" since
they all not widely-used symbols and sometimes not suitable for all
64-bit Loongson processors. E.g., we use symbols LOONGSON3_ENHANCEMENT,
CPU_LOONGSON3_WORKAROUNDS, etc.
2, Hide GSx64/GSx64E in Kconfig title since it is not useful for
general users. However, in the full description we use a more detailed
manner. E.g., GS264/GS464/GS464E/GS464V.
All Kconfig titles and descriptions of Loongson processors and machines
have also been updated in this patch for consistency.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@linux-mips.org
Cc: linux-mips@vger.kernel.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: Huacai Chen <chenhuacai@gmail.com>
2019-11-04 06:11:21 +00:00
|
|
|
bool "Old Loongson-3 LLSC Workarounds"
|
MIPS: Loongson: Introduce and use loongson_llsc_mb()
On the Loongson-2G/2H/3A/3B there is a hardware flaw that ll/sc and
lld/scd is very weak ordering. We should add sync instructions "before
each ll/lld" and "at the branch-target between ll/sc" to workaround.
Otherwise, this flaw will cause deadlock occasionally (e.g. when doing
heavy load test with LTP).
Below is the explaination of CPU designer:
"For Loongson 3 family, when a memory access instruction (load, store,
or prefetch)'s executing occurs between the execution of LL and SC, the
success or failure of SC is not predictable. Although programmer would
not insert memory access instructions between LL and SC, the memory
instructions before LL in program-order, may dynamically executed
between the execution of LL/SC, so a memory fence (SYNC) is needed
before LL/LLD to avoid this situation.
Since Loongson-3A R2 (3A2000), we have improved our hardware design to
handle this case. But we later deduce a rarely circumstance that some
speculatively executed memory instructions due to branch misprediction
between LL/SC still fall into the above case, so a memory fence (SYNC)
at branch-target (if its target is not between LL/SC) is needed for
Loongson 3A1000, 3B1500, 3A2000 and 3A3000.
Our processor is continually evolving and we aim to to remove all these
workaround-SYNCs around LL/SC for new-come processor."
Here is an example:
Both cpu1 and cpu2 simutaneously run atomic_add by 1 on same atomic var,
this bug cause both 'sc' run by two cpus (in atomic_add) succeed at same
time('sc' return 1), and the variable is only *added by 1*, sometimes,
which is wrong and unacceptable(it should be added by 2).
Why disable fix-loongson3-llsc in compiler?
Because compiler fix will cause problems in kernel's __ex_table section.
This patch fix all the cases in kernel, but:
+. the fix at the end of futex_atomic_cmpxchg_inatomic is for branch-target
of 'bne', there other cases which smp_mb__before_llsc() and smp_llsc_mb() fix
the ll and branch-target coincidently such as atomic_sub_if_positive/
cmpxchg/xchg, just like this one.
+. Loongson 3 does support CONFIG_EDAC_ATOMIC_SCRUB, so no need to touch
edac.h
+. local_ops and cmpxchg_local should not be affected by this bug since
only the owner can write.
+. mips_atomic_set for syscall.c is deprecated and rarely used, just let
it go
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Huang Pei <huangpei@loongson.cn>
[paul.burton@mips.com:
- Simplify the addition of -mno-fix-loongson3-llsc to cflags, and add
a comment describing why it's there.
- Make loongson_llsc_mb() a no-op when
CONFIG_CPU_LOONGSON3_WORKAROUNDS=n, rather than a compiler memory
barrier.
- Add a comment describing the bug & how loongson_llsc_mb() helps
in asm/barrier.h.]
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: ambrosehua@gmail.com
Cc: Steven J . Hill <Steven.Hill@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: Li Xuefeng <lixuefeng@loongson.cn>
Cc: Xu Chenghua <xuchenghua@loongson.cn>
2019-01-15 08:04:54 +00:00
|
|
|
default y if SMP
|
2019-10-20 14:43:13 +00:00
|
|
|
depends on CPU_LOONGSON64
|
MIPS: Loongson: Introduce and use loongson_llsc_mb()
On the Loongson-2G/2H/3A/3B there is a hardware flaw that ll/sc and
lld/scd is very weak ordering. We should add sync instructions "before
each ll/lld" and "at the branch-target between ll/sc" to workaround.
Otherwise, this flaw will cause deadlock occasionally (e.g. when doing
heavy load test with LTP).
Below is the explaination of CPU designer:
"For Loongson 3 family, when a memory access instruction (load, store,
or prefetch)'s executing occurs between the execution of LL and SC, the
success or failure of SC is not predictable. Although programmer would
not insert memory access instructions between LL and SC, the memory
instructions before LL in program-order, may dynamically executed
between the execution of LL/SC, so a memory fence (SYNC) is needed
before LL/LLD to avoid this situation.
Since Loongson-3A R2 (3A2000), we have improved our hardware design to
handle this case. But we later deduce a rarely circumstance that some
speculatively executed memory instructions due to branch misprediction
between LL/SC still fall into the above case, so a memory fence (SYNC)
at branch-target (if its target is not between LL/SC) is needed for
Loongson 3A1000, 3B1500, 3A2000 and 3A3000.
Our processor is continually evolving and we aim to to remove all these
workaround-SYNCs around LL/SC for new-come processor."
Here is an example:
Both cpu1 and cpu2 simutaneously run atomic_add by 1 on same atomic var,
this bug cause both 'sc' run by two cpus (in atomic_add) succeed at same
time('sc' return 1), and the variable is only *added by 1*, sometimes,
which is wrong and unacceptable(it should be added by 2).
Why disable fix-loongson3-llsc in compiler?
Because compiler fix will cause problems in kernel's __ex_table section.
This patch fix all the cases in kernel, but:
+. the fix at the end of futex_atomic_cmpxchg_inatomic is for branch-target
of 'bne', there other cases which smp_mb__before_llsc() and smp_llsc_mb() fix
the ll and branch-target coincidently such as atomic_sub_if_positive/
cmpxchg/xchg, just like this one.
+. Loongson 3 does support CONFIG_EDAC_ATOMIC_SCRUB, so no need to touch
edac.h
+. local_ops and cmpxchg_local should not be affected by this bug since
only the owner can write.
+. mips_atomic_set for syscall.c is deprecated and rarely used, just let
it go
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Huang Pei <huangpei@loongson.cn>
[paul.burton@mips.com:
- Simplify the addition of -mno-fix-loongson3-llsc to cflags, and add
a comment describing why it's there.
- Make loongson_llsc_mb() a no-op when
CONFIG_CPU_LOONGSON3_WORKAROUNDS=n, rather than a compiler memory
barrier.
- Add a comment describing the bug & how loongson_llsc_mb() helps
in asm/barrier.h.]
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: ambrosehua@gmail.com
Cc: Steven J . Hill <Steven.Hill@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: Li Xuefeng <lixuefeng@loongson.cn>
Cc: Xu Chenghua <xuchenghua@loongson.cn>
2019-01-15 08:04:54 +00:00
|
|
|
help
|
MIPS: Loongson: Unify LOONGSON3/LOONGSON64 Kconfig usage
There are mixed LOONGSON3/LOONGSON64 usages in recently changes, let's
establish some rules:
1, In Kconfig symbols, we only use CPU_LOONGSON64, MACH_LOONGSON64 and
SYS_HAS_CPU_LOONGSON64, all other derived symbols use "LOONGSON3" since
they all not widely-used symbols and sometimes not suitable for all
64-bit Loongson processors. E.g., we use symbols LOONGSON3_ENHANCEMENT,
CPU_LOONGSON3_WORKAROUNDS, etc.
2, Hide GSx64/GSx64E in Kconfig title since it is not useful for
general users. However, in the full description we use a more detailed
manner. E.g., GS264/GS464/GS464E/GS464V.
All Kconfig titles and descriptions of Loongson processors and machines
have also been updated in this patch for consistency.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@linux-mips.org
Cc: linux-mips@vger.kernel.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: Huacai Chen <chenhuacai@gmail.com>
2019-11-04 06:11:21 +00:00
|
|
|
Loongson-3 processors have the llsc issues which require workarounds.
|
MIPS: Loongson: Introduce and use loongson_llsc_mb()
On the Loongson-2G/2H/3A/3B there is a hardware flaw that ll/sc and
lld/scd is very weak ordering. We should add sync instructions "before
each ll/lld" and "at the branch-target between ll/sc" to workaround.
Otherwise, this flaw will cause deadlock occasionally (e.g. when doing
heavy load test with LTP).
Below is the explaination of CPU designer:
"For Loongson 3 family, when a memory access instruction (load, store,
or prefetch)'s executing occurs between the execution of LL and SC, the
success or failure of SC is not predictable. Although programmer would
not insert memory access instructions between LL and SC, the memory
instructions before LL in program-order, may dynamically executed
between the execution of LL/SC, so a memory fence (SYNC) is needed
before LL/LLD to avoid this situation.
Since Loongson-3A R2 (3A2000), we have improved our hardware design to
handle this case. But we later deduce a rarely circumstance that some
speculatively executed memory instructions due to branch misprediction
between LL/SC still fall into the above case, so a memory fence (SYNC)
at branch-target (if its target is not between LL/SC) is needed for
Loongson 3A1000, 3B1500, 3A2000 and 3A3000.
Our processor is continually evolving and we aim to to remove all these
workaround-SYNCs around LL/SC for new-come processor."
Here is an example:
Both cpu1 and cpu2 simutaneously run atomic_add by 1 on same atomic var,
this bug cause both 'sc' run by two cpus (in atomic_add) succeed at same
time('sc' return 1), and the variable is only *added by 1*, sometimes,
which is wrong and unacceptable(it should be added by 2).
Why disable fix-loongson3-llsc in compiler?
Because compiler fix will cause problems in kernel's __ex_table section.
This patch fix all the cases in kernel, but:
+. the fix at the end of futex_atomic_cmpxchg_inatomic is for branch-target
of 'bne', there other cases which smp_mb__before_llsc() and smp_llsc_mb() fix
the ll and branch-target coincidently such as atomic_sub_if_positive/
cmpxchg/xchg, just like this one.
+. Loongson 3 does support CONFIG_EDAC_ATOMIC_SCRUB, so no need to touch
edac.h
+. local_ops and cmpxchg_local should not be affected by this bug since
only the owner can write.
+. mips_atomic_set for syscall.c is deprecated and rarely used, just let
it go
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Huang Pei <huangpei@loongson.cn>
[paul.burton@mips.com:
- Simplify the addition of -mno-fix-loongson3-llsc to cflags, and add
a comment describing why it's there.
- Make loongson_llsc_mb() a no-op when
CONFIG_CPU_LOONGSON3_WORKAROUNDS=n, rather than a compiler memory
barrier.
- Add a comment describing the bug & how loongson_llsc_mb() helps
in asm/barrier.h.]
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: ambrosehua@gmail.com
Cc: Steven J . Hill <Steven.Hill@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: Li Xuefeng <lixuefeng@loongson.cn>
Cc: Xu Chenghua <xuchenghua@loongson.cn>
2019-01-15 08:04:54 +00:00
|
|
|
Without workarounds the system may hang unexpectedly.
|
|
|
|
|
MIPS: Loongson: Unify LOONGSON3/LOONGSON64 Kconfig usage
There are mixed LOONGSON3/LOONGSON64 usages in recently changes, let's
establish some rules:
1, In Kconfig symbols, we only use CPU_LOONGSON64, MACH_LOONGSON64 and
SYS_HAS_CPU_LOONGSON64, all other derived symbols use "LOONGSON3" since
they all not widely-used symbols and sometimes not suitable for all
64-bit Loongson processors. E.g., we use symbols LOONGSON3_ENHANCEMENT,
CPU_LOONGSON3_WORKAROUNDS, etc.
2, Hide GSx64/GSx64E in Kconfig title since it is not useful for
general users. However, in the full description we use a more detailed
manner. E.g., GS264/GS464/GS464E/GS464V.
All Kconfig titles and descriptions of Loongson processors and machines
have also been updated in this patch for consistency.
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@linux-mips.org
Cc: linux-mips@vger.kernel.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: Huacai Chen <chenhuacai@gmail.com>
2019-11-04 06:11:21 +00:00
|
|
|
Newer Loongson-3 will fix these issues and no workarounds are needed.
|
MIPS: Loongson: Introduce and use loongson_llsc_mb()
On the Loongson-2G/2H/3A/3B there is a hardware flaw that ll/sc and
lld/scd is very weak ordering. We should add sync instructions "before
each ll/lld" and "at the branch-target between ll/sc" to workaround.
Otherwise, this flaw will cause deadlock occasionally (e.g. when doing
heavy load test with LTP).
Below is the explaination of CPU designer:
"For Loongson 3 family, when a memory access instruction (load, store,
or prefetch)'s executing occurs between the execution of LL and SC, the
success or failure of SC is not predictable. Although programmer would
not insert memory access instructions between LL and SC, the memory
instructions before LL in program-order, may dynamically executed
between the execution of LL/SC, so a memory fence (SYNC) is needed
before LL/LLD to avoid this situation.
Since Loongson-3A R2 (3A2000), we have improved our hardware design to
handle this case. But we later deduce a rarely circumstance that some
speculatively executed memory instructions due to branch misprediction
between LL/SC still fall into the above case, so a memory fence (SYNC)
at branch-target (if its target is not between LL/SC) is needed for
Loongson 3A1000, 3B1500, 3A2000 and 3A3000.
Our processor is continually evolving and we aim to to remove all these
workaround-SYNCs around LL/SC for new-come processor."
Here is an example:
Both cpu1 and cpu2 simutaneously run atomic_add by 1 on same atomic var,
this bug cause both 'sc' run by two cpus (in atomic_add) succeed at same
time('sc' return 1), and the variable is only *added by 1*, sometimes,
which is wrong and unacceptable(it should be added by 2).
Why disable fix-loongson3-llsc in compiler?
Because compiler fix will cause problems in kernel's __ex_table section.
This patch fix all the cases in kernel, but:
+. the fix at the end of futex_atomic_cmpxchg_inatomic is for branch-target
of 'bne', there other cases which smp_mb__before_llsc() and smp_llsc_mb() fix
the ll and branch-target coincidently such as atomic_sub_if_positive/
cmpxchg/xchg, just like this one.
+. Loongson 3 does support CONFIG_EDAC_ATOMIC_SCRUB, so no need to touch
edac.h
+. local_ops and cmpxchg_local should not be affected by this bug since
only the owner can write.
+. mips_atomic_set for syscall.c is deprecated and rarely used, just let
it go
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Huang Pei <huangpei@loongson.cn>
[paul.burton@mips.com:
- Simplify the addition of -mno-fix-loongson3-llsc to cflags, and add
a comment describing why it's there.
- Make loongson_llsc_mb() a no-op when
CONFIG_CPU_LOONGSON3_WORKAROUNDS=n, rather than a compiler memory
barrier.
- Add a comment describing the bug & how loongson_llsc_mb() helps
in asm/barrier.h.]
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: ambrosehua@gmail.com
Cc: Steven J . Hill <Steven.Hill@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: Li Xuefeng <lixuefeng@loongson.cn>
Cc: Xu Chenghua <xuchenghua@loongson.cn>
2019-01-15 08:04:54 +00:00
|
|
|
The workarounds have no significant side effect on them but may
|
|
|
|
decrease the performance of the system so this option should be
|
|
|
|
disabled unless the kernel is intended to be run on old systems.
|
|
|
|
|
|
|
|
If unsure, please say Y.
|
|
|
|
|
MIPS: emulate CPUCFG instruction on older Loongson64 cores
CPUCFG is the instruction for querying processor characteristics on
newer Loongson processors, much like CPUID of x86. Since the instruction
is supposedly designed to provide a unified way to do feature detection
(without having to, for example, parse /proc/cpuinfo which is too
heavyweight), it is important to provide compatibility for older cores
without native support. Fortunately, most of the fields can be
synthesized without changes to semantics. Performance is not really big
a concern, because feature detection logic is not expected to be
invoked very often in typical userland applications.
The instruction can't be emulated on LOONGSON_2EF cores, according to
FlyGoat's experiments. Because the LWC2 opcode is assigned to other
valid instructions on 2E and 2F, no RI exception is raised for us to
intercept. So compatibility is only extended back furthest to
Loongson-3A1000. Loongson-2K is covered too, as it is basically a remix
of various blocks from the 3A/3B models from a kernel perspective.
This is lightly based on Loongson's work on their Linux 3.10 fork, for
being the authority on the right feature flags to fill in, where things
aren't otherwise discoverable.
Signed-off-by: WANG Xuerui <git@xen0n.name>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: Huacai Chen <chenhc@lemote.com>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-05-23 13:37:01 +00:00
|
|
|
config CPU_LOONGSON3_CPUCFG_EMULATION
|
|
|
|
bool "Emulate the CPUCFG instruction on older Loongson cores"
|
|
|
|
default y
|
|
|
|
depends on CPU_LOONGSON64
|
|
|
|
help
|
|
|
|
Loongson-3A R4 and newer have the CPUCFG instruction available for
|
|
|
|
userland to query CPU capabilities, much like CPUID on x86. This
|
|
|
|
option provides emulation of the instruction on older Loongson
|
|
|
|
cores, back to Loongson-3A1000.
|
|
|
|
|
|
|
|
If unsure, please say Y.
|
|
|
|
|
2009-07-02 15:27:41 +00:00
|
|
|
config CPU_LOONGSON2E
|
|
|
|
bool "Loongson 2E"
|
|
|
|
depends on SYS_HAS_CPU_LOONGSON2E
|
2019-10-20 14:43:13 +00:00
|
|
|
select CPU_LOONGSON2EF
|
2007-06-06 06:52:43 +00:00
|
|
|
help
|
|
|
|
The Loongson 2E processor implements the MIPS III instruction set
|
|
|
|
with many extensions.
|
|
|
|
|
2011-03-31 01:57:33 +00:00
|
|
|
It has an internal FPGA northbridge, which is compatible to
|
2009-11-06 10:45:05 +00:00
|
|
|
bonito64.
|
|
|
|
|
|
|
|
config CPU_LOONGSON2F
|
|
|
|
bool "Loongson 2F"
|
|
|
|
depends on SYS_HAS_CPU_LOONGSON2F
|
2019-10-20 14:43:13 +00:00
|
|
|
select CPU_LOONGSON2EF
|
2016-04-19 09:23:22 +00:00
|
|
|
select GPIOLIB
|
2009-11-06 10:45:05 +00:00
|
|
|
help
|
|
|
|
The Loongson 2F processor implements the MIPS III instruction set
|
|
|
|
with many extensions.
|
|
|
|
|
|
|
|
Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
|
|
|
|
have a similar programming interface with FPGA northbridge used in
|
|
|
|
Loongson2E.
|
|
|
|
|
2012-07-25 14:17:24 +00:00
|
|
|
config CPU_LOONGSON1B
|
|
|
|
bool "Loongson 1B"
|
|
|
|
depends on SYS_HAS_CPU_LOONGSON1B
|
2019-11-04 06:11:20 +00:00
|
|
|
select CPU_LOONGSON32
|
2016-04-06 12:34:54 +00:00
|
|
|
select LEDS_GPIO_REGISTER
|
2012-07-25 14:17:24 +00:00
|
|
|
help
|
|
|
|
The Loongson 1B is a 32-bit SoC, which implements the MIPS32
|
MIPS: Loongson: Set Loongson32 to MIPS32R1
LS232 (Loonson 2-issue 32-bit, also called GS232 (Godson 2-issue 32-bit))
is the CPU core (microarchitecture) of Loongson 1A/1B/1C.
According to "LS232 用户手册 (LS232 User Manual)", LS232 implements the
MIPS32 Release 1 instruction set, and part of the MIPS32 Release 2
instruction set.
In the manual, LS232 implements all of the MIPS32R2 instruction set
except the FPU instructions, and LS232 also implements 5 FPU
instructions of the MIPS32R2 instruction set: CEIL.L.fmt, CVT.L.fmt,
FLOOR.L.fmt, TRUNC.L.fmt, and ROUND.L.fmt.
But a bug of the DI instruction has been found during tests, the DI
instruction can not disable interrupts in arch_local_irq_disable() with
CONFIG_PREEMPT_NONE=y and CFLAGS='-mno-branch-likely' in some cases.
[paul.burton@mips.com:
- Remove the _MIPS_ISA redefinition to match the change made for the
generic MIPSr1 CPUs by commit 344ebf09949c ("MIPS: Always use
-march=<arch>, not -<arch> shortcuts").]
Signed-off-by: 谢致邦 (XIE Zhibang) <Yeking@Red54.com>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/16155/
Cc: linux-mips@linux-mips.org
Cc: ralf@linux-mips.org
2017-06-01 10:41:34 +00:00
|
|
|
Release 1 instruction set and part of the MIPS32 Release 2
|
|
|
|
instruction set.
|
2012-07-25 14:17:24 +00:00
|
|
|
|
2016-05-19 04:29:30 +00:00
|
|
|
config CPU_LOONGSON1C
|
|
|
|
bool "Loongson 1C"
|
|
|
|
depends on SYS_HAS_CPU_LOONGSON1C
|
2019-11-04 06:11:20 +00:00
|
|
|
select CPU_LOONGSON32
|
2016-05-19 04:29:30 +00:00
|
|
|
select LEDS_GPIO_REGISTER
|
|
|
|
help
|
|
|
|
The Loongson 1C is a 32-bit SoC, which implements the MIPS32
|
MIPS: Loongson: Set Loongson32 to MIPS32R1
LS232 (Loonson 2-issue 32-bit, also called GS232 (Godson 2-issue 32-bit))
is the CPU core (microarchitecture) of Loongson 1A/1B/1C.
According to "LS232 用户手册 (LS232 User Manual)", LS232 implements the
MIPS32 Release 1 instruction set, and part of the MIPS32 Release 2
instruction set.
In the manual, LS232 implements all of the MIPS32R2 instruction set
except the FPU instructions, and LS232 also implements 5 FPU
instructions of the MIPS32R2 instruction set: CEIL.L.fmt, CVT.L.fmt,
FLOOR.L.fmt, TRUNC.L.fmt, and ROUND.L.fmt.
But a bug of the DI instruction has been found during tests, the DI
instruction can not disable interrupts in arch_local_irq_disable() with
CONFIG_PREEMPT_NONE=y and CFLAGS='-mno-branch-likely' in some cases.
[paul.burton@mips.com:
- Remove the _MIPS_ISA redefinition to match the change made for the
generic MIPSr1 CPUs by commit 344ebf09949c ("MIPS: Always use
-march=<arch>, not -<arch> shortcuts").]
Signed-off-by: 谢致邦 (XIE Zhibang) <Yeking@Red54.com>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/16155/
Cc: linux-mips@linux-mips.org
Cc: ralf@linux-mips.org
2017-06-01 10:41:34 +00:00
|
|
|
Release 1 instruction set and part of the MIPS32 Release 2
|
|
|
|
instruction set.
|
2016-05-19 04:29:30 +00:00
|
|
|
|
2005-07-06 12:08:11 +00:00
|
|
|
config CPU_MIPS32_R1
|
|
|
|
bool "MIPS32 Release 1"
|
2005-10-20 21:33:09 +00:00
|
|
|
depends on SYS_HAS_CPU_MIPS32_R1
|
2005-07-06 12:08:11 +00:00
|
|
|
select CPU_HAS_PREFETCH
|
2005-08-10 15:17:11 +00:00
|
|
|
select CPU_SUPPORTS_32BIT_KERNEL
|
2006-03-05 00:45:33 +00:00
|
|
|
select CPU_SUPPORTS_HIGHMEM
|
2005-07-12 14:51:22 +00:00
|
|
|
help
|
2005-10-29 18:32:41 +00:00
|
|
|
Choose this option to build a kernel for release 1 or later of the
|
2005-07-12 14:51:22 +00:00
|
|
|
MIPS32 architecture. Most modern embedded systems with a 32-bit
|
|
|
|
MIPS processor are based on a MIPS32 processor. If you know the
|
|
|
|
specific type of processor in your system, choose those that one
|
|
|
|
otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
|
|
|
|
Release 2 of the MIPS32 architecture is available since several
|
|
|
|
years so chances are you even have a MIPS32 Release 2 processor
|
|
|
|
in which case you should choose CPU_MIPS32_R2 instead for better
|
|
|
|
performance.
|
|
|
|
|
|
|
|
config CPU_MIPS32_R2
|
|
|
|
bool "MIPS32 Release 2"
|
2005-10-20 21:33:09 +00:00
|
|
|
depends on SYS_HAS_CPU_MIPS32_R2
|
2005-07-12 14:51:22 +00:00
|
|
|
select CPU_HAS_PREFETCH
|
2005-08-10 15:17:11 +00:00
|
|
|
select CPU_SUPPORTS_32BIT_KERNEL
|
2006-03-05 00:45:33 +00:00
|
|
|
select CPU_SUPPORTS_HIGHMEM
|
2014-01-27 15:23:10 +00:00
|
|
|
select CPU_SUPPORTS_MSA
|
2012-11-22 02:33:59 +00:00
|
|
|
select HAVE_KVM
|
2005-07-06 12:08:11 +00:00
|
|
|
help
|
2005-10-29 18:32:41 +00:00
|
|
|
Choose this option to build a kernel for release 2 or later of the
|
2005-07-06 12:08:11 +00:00
|
|
|
MIPS32 architecture. Most modern embedded systems with a 32-bit
|
|
|
|
MIPS processor are based on a MIPS32 processor. If you know the
|
|
|
|
specific type of processor in your system, choose those that one
|
|
|
|
otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
|
|
|
|
|
mips: Add MIPS Release 5 support
There are five MIPS32/64 architecture releases currently available:
from 1 to 6 except fourth one, which was intentionally skipped.
Three of them can be called as major: 1st, 2nd and 6th, that not only
have some system level alterations, but also introduced significant
core/ISA level updates. The rest of the MIPS architecture releases are
minor.
Even though they don't have as much ISA/system/core level changes
as the major ones with respect to the previous releases, they still
provide a set of updates (I'd say they were intended to be the
intermediate releases before a major one) that might be useful for the
kernel and user-level code, when activated by the kernel or compiler.
In particular the following features were introduced or ended up being
available at/after MIPS32/64 Release 5 architecture:
+ the last release of the misaligned memory access instructions,
+ virtualisation - VZ ASE - is optional component of the arch,
+ SIMD - MSA ASE - is optional component of the arch,
+ DSP ASE is optional component of the arch,
+ CP0.Status.FR=1 for CP1.FIR.F64=1 (pure 64-bit FPU general registers)
must be available if FPU is implemented,
+ CP1.FIR.Has2008 support is required so CP1.FCSR.{ABS2008,NAN2008} bits
are available.
+ UFR/UNFR aliases to access CP0.Status.FR from user-space by means of
ctc1/cfc1 instructions (enabled by CP0.Config5.UFR),
+ CP0.COnfig5.LLB=1 and eretnc instruction are implemented to without
accidentally clearing LL-bit when returning from an interrupt,
exception, or error trap,
+ XPA feature together with extended versions of CPx registers is
introduced, which needs to have mfhc0/mthc0 instructions available.
So due to these changes GNU GCC provides an extended instructions set
support for MIPS32/64 Release 5 by default like eretnc/mfhc0/mthc0. Even
though the architecture alteration isn't that big, it still worth to be
taken into account by the kernel software. Finally we can't deny that
some optimization/limitations might be found in future and implemented
on some level in kernel or compiler. In this case having even
intermediate MIPS architecture releases support would be more than
useful.
So the most of the changes provided by this commit can be split into
either compile- or runtime configs related. The compile-time related
changes are caused by adding the new CONFIG_CPU_MIPS32_R5/CONFIG_CPU_MIPSR5
configs and concern the code activating MIPSR2 or MIPSR6 already
implemented features (like eretnc/LLbit, mthc0/mfhc0). In addition
CPU_HAS_MSA can be now freely enabled for MIPS32/64 release 5 based
platforms as this is done for CPU_MIPS32_R6 CPUs. The runtime changes
concerns the features which are handled with respect to the MIPS ISA
revision detected at run-time by means of CP0.Config.{AT,AR} bits. Alas
these fields can be used to detect either r1 or r2 or r6 releases.
But since we know which CPUs in fact support the R5 arch, we can manually
set MIPS_CPU_ISA_M32R5/MIPS_CPU_ISA_M64R5 bit of c->isa_level and then
use cpu_has_mips32r5/cpu_has_mips64r5 where it's appropriate.
Since XPA/EVA provide too complex alterationss and to have them used with
MIPS32 Release 2 charged kernels (for compatibility with current platform
configs) they are left to be setup as a separate kernel configs.
Co-developed-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-05-21 14:07:14 +00:00
|
|
|
config CPU_MIPS32_R5
|
|
|
|
bool "MIPS32 Release 5"
|
|
|
|
depends on SYS_HAS_CPU_MIPS32_R5
|
|
|
|
select CPU_HAS_PREFETCH
|
|
|
|
select CPU_SUPPORTS_32BIT_KERNEL
|
|
|
|
select CPU_SUPPORTS_HIGHMEM
|
|
|
|
select CPU_SUPPORTS_MSA
|
|
|
|
select HAVE_KVM
|
|
|
|
select MIPS_O32_FP64_SUPPORT
|
|
|
|
help
|
|
|
|
Choose this option to build a kernel for release 5 or later of the
|
|
|
|
MIPS32 architecture. New MIPS processors, starting with the Warrior
|
|
|
|
family, are based on a MIPS32r5 processor. If you own an older
|
|
|
|
processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
|
|
|
|
|
2014-10-27 10:34:11 +00:00
|
|
|
config CPU_MIPS32_R6
|
2015-07-16 12:24:46 +00:00
|
|
|
bool "MIPS32 Release 6"
|
2014-10-27 10:34:11 +00:00
|
|
|
depends on SYS_HAS_CPU_MIPS32_R6
|
|
|
|
select CPU_HAS_PREFETCH
|
2020-01-22 10:58:50 +00:00
|
|
|
select CPU_NO_LOAD_STORE_LR
|
2014-10-27 10:34:11 +00:00
|
|
|
select CPU_SUPPORTS_32BIT_KERNEL
|
|
|
|
select CPU_SUPPORTS_HIGHMEM
|
|
|
|
select CPU_SUPPORTS_MSA
|
|
|
|
select HAVE_KVM
|
|
|
|
select MIPS_O32_FP64_SUPPORT
|
|
|
|
help
|
|
|
|
Choose this option to build a kernel for release 6 or later of the
|
|
|
|
MIPS32 architecture. New MIPS processors, starting with the Warrior
|
|
|
|
family, are based on a MIPS32r6 processor. If you own an older
|
|
|
|
processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
|
|
|
|
|
2005-07-06 12:08:11 +00:00
|
|
|
config CPU_MIPS64_R1
|
|
|
|
bool "MIPS64 Release 1"
|
2005-10-20 21:33:09 +00:00
|
|
|
depends on SYS_HAS_CPU_MIPS64_R1
|
2005-08-10 15:17:11 +00:00
|
|
|
select CPU_HAS_PREFETCH
|
2005-09-03 22:56:21 +00:00
|
|
|
select CPU_SUPPORTS_32BIT_KERNEL
|
|
|
|
select CPU_SUPPORTS_64BIT_KERNEL
|
2006-03-05 00:45:33 +00:00
|
|
|
select CPU_SUPPORTS_HIGHMEM
|
2009-05-28 00:47:46 +00:00
|
|
|
select CPU_SUPPORTS_HUGEPAGES
|
2005-07-06 12:08:11 +00:00
|
|
|
help
|
|
|
|
Choose this option to build a kernel for release 1 or later of the
|
|
|
|
MIPS64 architecture. Many modern embedded systems with a 64-bit
|
|
|
|
MIPS processor are based on a MIPS64 processor. If you know the
|
|
|
|
specific type of processor in your system, choose those that one
|
|
|
|
otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
|
2005-07-12 14:51:22 +00:00
|
|
|
Release 2 of the MIPS64 architecture is available since several
|
|
|
|
years so chances are you even have a MIPS64 Release 2 processor
|
|
|
|
in which case you should choose CPU_MIPS64_R2 instead for better
|
|
|
|
performance.
|
|
|
|
|
|
|
|
config CPU_MIPS64_R2
|
|
|
|
bool "MIPS64 Release 2"
|
2005-10-20 21:33:09 +00:00
|
|
|
depends on SYS_HAS_CPU_MIPS64_R2
|
2005-08-10 15:17:11 +00:00
|
|
|
select CPU_HAS_PREFETCH
|
2005-07-12 14:51:22 +00:00
|
|
|
select CPU_SUPPORTS_32BIT_KERNEL
|
|
|
|
select CPU_SUPPORTS_64BIT_KERNEL
|
2006-03-05 00:45:33 +00:00
|
|
|
select CPU_SUPPORTS_HIGHMEM
|
2009-05-28 00:47:46 +00:00
|
|
|
select CPU_SUPPORTS_HUGEPAGES
|
2014-01-27 15:23:10 +00:00
|
|
|
select CPU_SUPPORTS_MSA
|
2016-07-08 10:53:31 +00:00
|
|
|
select HAVE_KVM
|
2005-07-12 14:51:22 +00:00
|
|
|
help
|
|
|
|
Choose this option to build a kernel for release 2 or later of the
|
|
|
|
MIPS64 architecture. Many modern embedded systems with a 64-bit
|
|
|
|
MIPS processor are based on a MIPS64 processor. If you know the
|
|
|
|
specific type of processor in your system, choose those that one
|
|
|
|
otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
|
2005-04-16 22:20:36 +00:00
|
|
|
|
mips: Add MIPS Release 5 support
There are five MIPS32/64 architecture releases currently available:
from 1 to 6 except fourth one, which was intentionally skipped.
Three of them can be called as major: 1st, 2nd and 6th, that not only
have some system level alterations, but also introduced significant
core/ISA level updates. The rest of the MIPS architecture releases are
minor.
Even though they don't have as much ISA/system/core level changes
as the major ones with respect to the previous releases, they still
provide a set of updates (I'd say they were intended to be the
intermediate releases before a major one) that might be useful for the
kernel and user-level code, when activated by the kernel or compiler.
In particular the following features were introduced or ended up being
available at/after MIPS32/64 Release 5 architecture:
+ the last release of the misaligned memory access instructions,
+ virtualisation - VZ ASE - is optional component of the arch,
+ SIMD - MSA ASE - is optional component of the arch,
+ DSP ASE is optional component of the arch,
+ CP0.Status.FR=1 for CP1.FIR.F64=1 (pure 64-bit FPU general registers)
must be available if FPU is implemented,
+ CP1.FIR.Has2008 support is required so CP1.FCSR.{ABS2008,NAN2008} bits
are available.
+ UFR/UNFR aliases to access CP0.Status.FR from user-space by means of
ctc1/cfc1 instructions (enabled by CP0.Config5.UFR),
+ CP0.COnfig5.LLB=1 and eretnc instruction are implemented to without
accidentally clearing LL-bit when returning from an interrupt,
exception, or error trap,
+ XPA feature together with extended versions of CPx registers is
introduced, which needs to have mfhc0/mthc0 instructions available.
So due to these changes GNU GCC provides an extended instructions set
support for MIPS32/64 Release 5 by default like eretnc/mfhc0/mthc0. Even
though the architecture alteration isn't that big, it still worth to be
taken into account by the kernel software. Finally we can't deny that
some optimization/limitations might be found in future and implemented
on some level in kernel or compiler. In this case having even
intermediate MIPS architecture releases support would be more than
useful.
So the most of the changes provided by this commit can be split into
either compile- or runtime configs related. The compile-time related
changes are caused by adding the new CONFIG_CPU_MIPS32_R5/CONFIG_CPU_MIPSR5
configs and concern the code activating MIPSR2 or MIPSR6 already
implemented features (like eretnc/LLbit, mthc0/mfhc0). In addition
CPU_HAS_MSA can be now freely enabled for MIPS32/64 release 5 based
platforms as this is done for CPU_MIPS32_R6 CPUs. The runtime changes
concerns the features which are handled with respect to the MIPS ISA
revision detected at run-time by means of CP0.Config.{AT,AR} bits. Alas
these fields can be used to detect either r1 or r2 or r6 releases.
But since we know which CPUs in fact support the R5 arch, we can manually
set MIPS_CPU_ISA_M32R5/MIPS_CPU_ISA_M64R5 bit of c->isa_level and then
use cpu_has_mips32r5/cpu_has_mips64r5 where it's appropriate.
Since XPA/EVA provide too complex alterationss and to have them used with
MIPS32 Release 2 charged kernels (for compatibility with current platform
configs) they are left to be setup as a separate kernel configs.
Co-developed-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-05-21 14:07:14 +00:00
|
|
|
config CPU_MIPS64_R5
|
|
|
|
bool "MIPS64 Release 5"
|
|
|
|
depends on SYS_HAS_CPU_MIPS64_R5
|
|
|
|
select CPU_HAS_PREFETCH
|
|
|
|
select CPU_SUPPORTS_32BIT_KERNEL
|
|
|
|
select CPU_SUPPORTS_64BIT_KERNEL
|
|
|
|
select CPU_SUPPORTS_HIGHMEM
|
|
|
|
select CPU_SUPPORTS_HUGEPAGES
|
|
|
|
select CPU_SUPPORTS_MSA
|
|
|
|
select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
|
|
|
|
select HAVE_KVM
|
|
|
|
help
|
|
|
|
Choose this option to build a kernel for release 5 or later of the
|
|
|
|
MIPS64 architecture. This is a intermediate MIPS architecture
|
|
|
|
release partly implementing release 6 features. Though there is no
|
|
|
|
any hardware known to be based on this release.
|
|
|
|
|
2014-10-27 10:34:11 +00:00
|
|
|
config CPU_MIPS64_R6
|
2015-07-16 12:24:46 +00:00
|
|
|
bool "MIPS64 Release 6"
|
2014-10-27 10:34:11 +00:00
|
|
|
depends on SYS_HAS_CPU_MIPS64_R6
|
|
|
|
select CPU_HAS_PREFETCH
|
2020-01-22 10:58:50 +00:00
|
|
|
select CPU_NO_LOAD_STORE_LR
|
2014-10-27 10:34:11 +00:00
|
|
|
select CPU_SUPPORTS_32BIT_KERNEL
|
|
|
|
select CPU_SUPPORTS_64BIT_KERNEL
|
|
|
|
select CPU_SUPPORTS_HIGHMEM
|
2019-02-02 02:21:53 +00:00
|
|
|
select CPU_SUPPORTS_HUGEPAGES
|
2014-10-27 10:34:11 +00:00
|
|
|
select CPU_SUPPORTS_MSA
|
2017-02-16 12:39:01 +00:00
|
|
|
select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
|
2016-07-08 10:53:31 +00:00
|
|
|
select HAVE_KVM
|
2014-10-27 10:34:11 +00:00
|
|
|
help
|
|
|
|
Choose this option to build a kernel for release 6 or later of the
|
|
|
|
MIPS64 architecture. New MIPS processors, starting with the Warrior
|
|
|
|
family, are based on a MIPS64r6 processor. If you own an older
|
|
|
|
processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
|
|
|
|
|
mips: Add MIPS Warrior P5600 support
This is a MIPS32 Release 5 based IP core with XPA, EVA, dual/quad issue
exec pipes, MMU with two-levels TLB, UCA, MSA, MDU core level features
and system level features like up to six P5600 calculation cores, CM2
with L2 cache, IOCU/IOMMU (though might be unused depending on the
system-specific IP core configuration), GIC, CPC, virtualisation module,
eJTAG and PDtrace.
As being MIPS32 Release 5 based core it provides all the features
available by the CPU_MIPS32_R5 config, while adding a few more like
UCA attribute support, availability of CPU-freq (by means of L2/CM
clock ratio setting), EI/VI GIC modes detection at runtime.
In addition to this if P5600 architecture is enabled modern GNU GCC
provides a specific tuning for P5600 processors with respect to the
classic MIPS32 Release 5. First of all branch-likely avoidance is
activated only when the code is compiled with the speed optimization
(avoidance is always enabled for the pure MIPS32 Release 5
architecture). Secondly the madd/msub avoidance is enabled since
madd/msub utilization isn't profitable due to overhead of getting the
result out of the HI/LO registers. Multiply-accumulate instructions are
activated and utilized together with the necessary code reorder when
multiply-add/multiply-subtract statements are met. Finally load/store
bonding is activated by default. All of these optimizations may make
the code relatively faster than if just MIP32 release 5 architecture
was requested.
Co-developed-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-05-21 14:07:15 +00:00
|
|
|
config CPU_P5600
|
|
|
|
bool "MIPS Warrior P5600"
|
|
|
|
depends on SYS_HAS_CPU_P5600
|
|
|
|
select CPU_HAS_PREFETCH
|
|
|
|
select CPU_SUPPORTS_32BIT_KERNEL
|
|
|
|
select CPU_SUPPORTS_HIGHMEM
|
|
|
|
select CPU_SUPPORTS_MSA
|
|
|
|
select CPU_SUPPORTS_UNCACHED_ACCELERATED
|
|
|
|
select CPU_SUPPORTS_CPUFREQ
|
|
|
|
select CPU_MIPSR2_IRQ_VI
|
|
|
|
select CPU_MIPSR2_IRQ_EI
|
|
|
|
select HAVE_KVM
|
|
|
|
select MIPS_O32_FP64_SUPPORT
|
|
|
|
help
|
|
|
|
Choose this option to build a kernel for MIPS Warrior P5600 CPU.
|
|
|
|
It's based on MIPS32r5 ISA with XPA, EVA, dual/quad issue exec pipes,
|
|
|
|
MMU with two-levels TLB, UCA, MSA, MDU core level features and system
|
|
|
|
level features like up to six P5600 calculation cores, CM2 with L2
|
|
|
|
cache, IOCU/IOMMU (though might be unused depending on the system-
|
|
|
|
specific IP core configuration), GIC, CPC, virtualisation module,
|
|
|
|
eJTAG and PDtrace.
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config CPU_R3000
|
|
|
|
bool "R3000"
|
2005-10-20 21:33:09 +00:00
|
|
|
depends on SYS_HAS_CPU_R3000
|
2006-04-24 13:58:53 +00:00
|
|
|
select CPU_HAS_WB
|
2019-08-31 15:40:43 +00:00
|
|
|
select CPU_R3K_TLB
|
2005-09-03 22:56:21 +00:00
|
|
|
select CPU_SUPPORTS_32BIT_KERNEL
|
2005-08-10 15:17:11 +00:00
|
|
|
select CPU_SUPPORTS_HIGHMEM
|
2005-04-16 22:20:36 +00:00
|
|
|
help
|
|
|
|
Please make sure to pick the right CPU type. Linux/MIPS is not
|
|
|
|
designed to be generic, i.e. Kernels compiled for R3000 CPUs will
|
|
|
|
*not* work on R4000 machines and vice versa. However, since most
|
|
|
|
of the supported machines have an R4000 (or similar) CPU, R4x00
|
|
|
|
might be a safe bet. If the resulting kernel does not work,
|
|
|
|
try to recompile with R3000.
|
|
|
|
|
|
|
|
config CPU_TX39XX
|
|
|
|
bool "R39XX"
|
2005-10-20 21:33:09 +00:00
|
|
|
depends on SYS_HAS_CPU_TX39XX
|
2005-09-03 22:56:21 +00:00
|
|
|
select CPU_SUPPORTS_32BIT_KERNEL
|
2019-08-31 15:40:43 +00:00
|
|
|
select CPU_R3K_TLB
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
config CPU_VR41XX
|
|
|
|
bool "R41xx"
|
2005-10-20 21:33:09 +00:00
|
|
|
depends on SYS_HAS_CPU_VR41XX
|
2005-09-03 22:56:21 +00:00
|
|
|
select CPU_SUPPORTS_32BIT_KERNEL
|
|
|
|
select CPU_SUPPORTS_64BIT_KERNEL
|
2005-04-16 22:20:36 +00:00
|
|
|
help
|
2005-10-29 18:32:41 +00:00
|
|
|
The options selects support for the NEC VR4100 series of processors.
|
2005-04-16 22:20:36 +00:00
|
|
|
Only choose this option if you have one of these processors as a
|
|
|
|
kernel built with this option will not run on any other type of
|
|
|
|
processor or vice versa.
|
|
|
|
|
|
|
|
config CPU_R4X00
|
|
|
|
bool "R4x00"
|
2005-10-20 21:33:09 +00:00
|
|
|
depends on SYS_HAS_CPU_R4X00
|
2005-09-03 22:56:21 +00:00
|
|
|
select CPU_SUPPORTS_32BIT_KERNEL
|
|
|
|
select CPU_SUPPORTS_64BIT_KERNEL
|
2012-10-18 11:54:15 +00:00
|
|
|
select CPU_SUPPORTS_HUGEPAGES
|
2005-04-16 22:20:36 +00:00
|
|
|
help
|
|
|
|
MIPS Technologies R4000-series processors other than 4300, including
|
|
|
|
the R4000, R4400, R4600, and 4700.
|
|
|
|
|
|
|
|
config CPU_TX49XX
|
|
|
|
bool "R49XX"
|
2005-10-20 21:33:09 +00:00
|
|
|
depends on SYS_HAS_CPU_TX49XX
|
2006-03-17 03:59:22 +00:00
|
|
|
select CPU_HAS_PREFETCH
|
2005-09-03 22:56:21 +00:00
|
|
|
select CPU_SUPPORTS_32BIT_KERNEL
|
|
|
|
select CPU_SUPPORTS_64BIT_KERNEL
|
2012-10-18 11:54:15 +00:00
|
|
|
select CPU_SUPPORTS_HUGEPAGES
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
config CPU_R5000
|
|
|
|
bool "R5000"
|
2005-10-20 21:33:09 +00:00
|
|
|
depends on SYS_HAS_CPU_R5000
|
2005-09-03 22:56:21 +00:00
|
|
|
select CPU_SUPPORTS_32BIT_KERNEL
|
|
|
|
select CPU_SUPPORTS_64BIT_KERNEL
|
2012-10-18 11:54:15 +00:00
|
|
|
select CPU_SUPPORTS_HUGEPAGES
|
2005-04-16 22:20:36 +00:00
|
|
|
help
|
|
|
|
MIPS Technologies R5000-series processors other than the Nevada.
|
|
|
|
|
2008-10-23 16:27:57 +00:00
|
|
|
config CPU_R5500
|
|
|
|
bool "R5500"
|
|
|
|
depends on SYS_HAS_CPU_R5500
|
|
|
|
select CPU_SUPPORTS_32BIT_KERNEL
|
|
|
|
select CPU_SUPPORTS_64BIT_KERNEL
|
2009-05-28 00:47:46 +00:00
|
|
|
select CPU_SUPPORTS_HUGEPAGES
|
2008-10-23 16:27:57 +00:00
|
|
|
help
|
|
|
|
NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
|
|
|
|
instruction set.
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config CPU_NEVADA
|
|
|
|
bool "RM52xx"
|
2005-10-20 21:33:09 +00:00
|
|
|
depends on SYS_HAS_CPU_NEVADA
|
2005-09-03 22:56:21 +00:00
|
|
|
select CPU_SUPPORTS_32BIT_KERNEL
|
|
|
|
select CPU_SUPPORTS_64BIT_KERNEL
|
2012-10-18 11:54:15 +00:00
|
|
|
select CPU_SUPPORTS_HUGEPAGES
|
2005-04-16 22:20:36 +00:00
|
|
|
help
|
|
|
|
QED / PMC-Sierra RM52xx-series ("Nevada") processors.
|
|
|
|
|
|
|
|
config CPU_R10000
|
|
|
|
bool "R10000"
|
2005-10-20 21:33:09 +00:00
|
|
|
depends on SYS_HAS_CPU_R10000
|
2005-10-29 18:32:41 +00:00
|
|
|
select CPU_HAS_PREFETCH
|
2005-09-03 22:56:21 +00:00
|
|
|
select CPU_SUPPORTS_32BIT_KERNEL
|
|
|
|
select CPU_SUPPORTS_64BIT_KERNEL
|
2005-08-10 15:17:11 +00:00
|
|
|
select CPU_SUPPORTS_HIGHMEM
|
2012-10-18 11:54:15 +00:00
|
|
|
select CPU_SUPPORTS_HUGEPAGES
|
2005-04-16 22:20:36 +00:00
|
|
|
help
|
|
|
|
MIPS Technologies R10000-series processors.
|
|
|
|
|
|
|
|
config CPU_RM7000
|
|
|
|
bool "RM7000"
|
2005-10-20 21:33:09 +00:00
|
|
|
depends on SYS_HAS_CPU_RM7000
|
2005-10-29 18:32:41 +00:00
|
|
|
select CPU_HAS_PREFETCH
|
2005-09-03 22:56:21 +00:00
|
|
|
select CPU_SUPPORTS_32BIT_KERNEL
|
|
|
|
select CPU_SUPPORTS_64BIT_KERNEL
|
2005-08-10 15:17:11 +00:00
|
|
|
select CPU_SUPPORTS_HIGHMEM
|
2012-10-18 11:54:15 +00:00
|
|
|
select CPU_SUPPORTS_HUGEPAGES
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
config CPU_SB1
|
|
|
|
bool "SB1"
|
2005-10-20 21:33:09 +00:00
|
|
|
depends on SYS_HAS_CPU_SB1
|
2005-09-03 22:56:21 +00:00
|
|
|
select CPU_SUPPORTS_32BIT_KERNEL
|
|
|
|
select CPU_SUPPORTS_64BIT_KERNEL
|
2005-08-10 15:17:11 +00:00
|
|
|
select CPU_SUPPORTS_HIGHMEM
|
2012-10-18 11:54:15 +00:00
|
|
|
select CPU_SUPPORTS_HUGEPAGES
|
2006-10-31 03:45:07 +00:00
|
|
|
select WEAK_ORDERING
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2008-12-11 23:33:38 +00:00
|
|
|
config CPU_CAVIUM_OCTEON
|
|
|
|
bool "Cavium Octeon processor"
|
2009-02-02 19:30:59 +00:00
|
|
|
depends on SYS_HAS_CPU_CAVIUM_OCTEON
|
2008-12-11 23:33:38 +00:00
|
|
|
select CPU_HAS_PREFETCH
|
|
|
|
select CPU_SUPPORTS_64BIT_KERNEL
|
|
|
|
select WEAK_ORDERING
|
|
|
|
select CPU_SUPPORTS_HIGHMEM
|
2009-05-28 00:47:46 +00:00
|
|
|
select CPU_SUPPORTS_HUGEPAGES
|
2015-05-25 19:27:29 +00:00
|
|
|
select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
|
|
|
|
select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
|
2014-01-14 17:54:38 +00:00
|
|
|
select MIPS_L1_CACHE_SHIFT_7
|
2017-03-14 10:25:51 +00:00
|
|
|
select HAVE_KVM
|
2008-12-11 23:33:38 +00:00
|
|
|
help
|
|
|
|
The Cavium Octeon processor is a highly integrated chip containing
|
|
|
|
many ethernet hardware widgets for networking tasks. The processor
|
|
|
|
can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
|
|
|
|
Full details can be found at http://www.caviumnetworks.com.
|
|
|
|
|
2013-12-18 13:12:02 +00:00
|
|
|
config CPU_BMIPS
|
|
|
|
bool "Broadcom BMIPS"
|
|
|
|
depends on SYS_HAS_CPU_BMIPS
|
|
|
|
select CPU_MIPS32
|
2013-12-18 13:12:05 +00:00
|
|
|
select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
|
2013-12-18 13:12:02 +00:00
|
|
|
select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
|
|
|
|
select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
|
|
|
|
select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
|
|
|
|
select CPU_SUPPORTS_32BIT_KERNEL
|
|
|
|
select DMA_NONCOHERENT
|
2015-05-26 16:20:06 +00:00
|
|
|
select IRQ_MIPS_CPU
|
2013-12-18 13:12:02 +00:00
|
|
|
select SWAP_IO_SPACE
|
|
|
|
select WEAK_ORDERING
|
2010-10-17 17:56:53 +00:00
|
|
|
select CPU_SUPPORTS_HIGHMEM
|
2013-12-18 13:12:04 +00:00
|
|
|
select CPU_HAS_PREFETCH
|
2017-02-07 21:58:54 +00:00
|
|
|
select CPU_SUPPORTS_CPUFREQ
|
|
|
|
select MIPS_EXTERNAL_TIMER
|
2010-10-17 17:56:53 +00:00
|
|
|
help
|
2013-12-18 13:12:05 +00:00
|
|
|
Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
|
2010-10-17 17:56:53 +00:00
|
|
|
|
2011-05-06 20:06:57 +00:00
|
|
|
config CPU_XLR
|
|
|
|
bool "Netlogic XLR SoC"
|
|
|
|
depends on SYS_HAS_CPU_XLR
|
|
|
|
select CPU_SUPPORTS_32BIT_KERNEL
|
|
|
|
select CPU_SUPPORTS_64BIT_KERNEL
|
|
|
|
select CPU_SUPPORTS_HIGHMEM
|
2012-10-18 11:54:15 +00:00
|
|
|
select CPU_SUPPORTS_HUGEPAGES
|
2011-05-06 20:06:57 +00:00
|
|
|
select WEAK_ORDERING
|
|
|
|
select WEAK_REORDERING_BEYOND_LLSC
|
|
|
|
help
|
|
|
|
Netlogic Microsystems XLR/XLS processors.
|
2011-11-16 00:21:28 +00:00
|
|
|
|
|
|
|
config CPU_XLP
|
|
|
|
bool "Netlogic XLP SoC"
|
|
|
|
depends on SYS_HAS_CPU_XLP
|
|
|
|
select CPU_SUPPORTS_32BIT_KERNEL
|
|
|
|
select CPU_SUPPORTS_64BIT_KERNEL
|
|
|
|
select CPU_SUPPORTS_HIGHMEM
|
|
|
|
select WEAK_ORDERING
|
|
|
|
select WEAK_REORDERING_BEYOND_LLSC
|
|
|
|
select CPU_HAS_PREFETCH
|
2012-10-31 12:01:29 +00:00
|
|
|
select CPU_MIPSR2
|
2015-01-07 11:28:32 +00:00
|
|
|
select CPU_SUPPORTS_HUGEPAGES
|
2016-05-06 13:36:24 +00:00
|
|
|
select MIPS_ASID_BITS_VARIABLE
|
2011-11-16 00:21:28 +00:00
|
|
|
help
|
|
|
|
Netlogic Microsystems XLP processors.
|
2005-04-16 22:20:36 +00:00
|
|
|
endchoice
|
|
|
|
|
2013-12-03 10:22:26 +00:00
|
|
|
config CPU_MIPS32_3_5_FEATURES
|
|
|
|
bool "MIPS32 Release 3.5 Features"
|
|
|
|
depends on SYS_HAS_CPU_MIPS32_R3_5
|
mips: Add MIPS Warrior P5600 support
This is a MIPS32 Release 5 based IP core with XPA, EVA, dual/quad issue
exec pipes, MMU with two-levels TLB, UCA, MSA, MDU core level features
and system level features like up to six P5600 calculation cores, CM2
with L2 cache, IOCU/IOMMU (though might be unused depending on the
system-specific IP core configuration), GIC, CPC, virtualisation module,
eJTAG and PDtrace.
As being MIPS32 Release 5 based core it provides all the features
available by the CPU_MIPS32_R5 config, while adding a few more like
UCA attribute support, availability of CPU-freq (by means of L2/CM
clock ratio setting), EI/VI GIC modes detection at runtime.
In addition to this if P5600 architecture is enabled modern GNU GCC
provides a specific tuning for P5600 processors with respect to the
classic MIPS32 Release 5. First of all branch-likely avoidance is
activated only when the code is compiled with the speed optimization
(avoidance is always enabled for the pure MIPS32 Release 5
architecture). Secondly the madd/msub avoidance is enabled since
madd/msub utilization isn't profitable due to overhead of getting the
result out of the HI/LO registers. Multiply-accumulate instructions are
activated and utilized together with the necessary code reorder when
multiply-add/multiply-subtract statements are met. Finally load/store
bonding is activated by default. All of these optimizations may make
the code relatively faster than if just MIP32 release 5 architecture
was requested.
Co-developed-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-05-21 14:07:15 +00:00
|
|
|
depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 || \
|
|
|
|
CPU_P5600
|
2013-12-03 10:22:26 +00:00
|
|
|
help
|
|
|
|
Choose this option to build a kernel for release 2 or later of the
|
|
|
|
MIPS32 architecture including features from the 3.5 release such as
|
|
|
|
support for Enhanced Virtual Addressing (EVA).
|
|
|
|
|
|
|
|
config CPU_MIPS32_3_5_EVA
|
|
|
|
bool "Enhanced Virtual Addressing (EVA)"
|
|
|
|
depends on CPU_MIPS32_3_5_FEATURES
|
|
|
|
select EVA
|
|
|
|
default y
|
|
|
|
help
|
|
|
|
Choose this option if you want to enable the Enhanced Virtual
|
|
|
|
Addressing (EVA) on your MIPS32 core (such as proAptiv).
|
|
|
|
One of its primary benefits is an increase in the maximum size
|
|
|
|
of lowmem (up to 3GB). If unsure, say 'N' here.
|
|
|
|
|
2015-02-27 00:16:38 +00:00
|
|
|
config CPU_MIPS32_R5_FEATURES
|
|
|
|
bool "MIPS32 Release 5 Features"
|
|
|
|
depends on SYS_HAS_CPU_MIPS32_R5
|
mips: Add MIPS Warrior P5600 support
This is a MIPS32 Release 5 based IP core with XPA, EVA, dual/quad issue
exec pipes, MMU with two-levels TLB, UCA, MSA, MDU core level features
and system level features like up to six P5600 calculation cores, CM2
with L2 cache, IOCU/IOMMU (though might be unused depending on the
system-specific IP core configuration), GIC, CPC, virtualisation module,
eJTAG and PDtrace.
As being MIPS32 Release 5 based core it provides all the features
available by the CPU_MIPS32_R5 config, while adding a few more like
UCA attribute support, availability of CPU-freq (by means of L2/CM
clock ratio setting), EI/VI GIC modes detection at runtime.
In addition to this if P5600 architecture is enabled modern GNU GCC
provides a specific tuning for P5600 processors with respect to the
classic MIPS32 Release 5. First of all branch-likely avoidance is
activated only when the code is compiled with the speed optimization
(avoidance is always enabled for the pure MIPS32 Release 5
architecture). Secondly the madd/msub avoidance is enabled since
madd/msub utilization isn't profitable due to overhead of getting the
result out of the HI/LO registers. Multiply-accumulate instructions are
activated and utilized together with the necessary code reorder when
multiply-add/multiply-subtract statements are met. Finally load/store
bonding is activated by default. All of these optimizations may make
the code relatively faster than if just MIP32 release 5 architecture
was requested.
Co-developed-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-05-21 14:07:15 +00:00
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depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_P5600
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2015-02-27 00:16:38 +00:00
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help
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Choose this option to build a kernel for release 2 or later of the
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MIPS32 architecture including features from release 5 such as
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support for Extended Physical Addressing (XPA).
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config CPU_MIPS32_R5_XPA
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bool "Extended Physical Addressing (XPA)"
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depends on CPU_MIPS32_R5_FEATURES
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depends on !EVA
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depends on !PAGE_SIZE_4KB
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depends on SYS_SUPPORTS_HIGHMEM
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select XPA
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select HIGHMEM
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2018-04-03 14:24:20 +00:00
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select PHYS_ADDR_T_64BIT
|
2015-02-27 00:16:38 +00:00
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default n
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help
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Choose this option if you want to enable the Extended Physical
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Addressing (XPA) on your MIPS32 core (such as P5600 series). The
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benefit is to increase physical addressing equal to or greater
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than 40 bits. Note that this has the side effect of turning on
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64-bit addressing which in turn makes the PTEs 64-bit in size.
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If unsure, say 'N' here.
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2010-04-10 12:04:42 +00:00
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if CPU_LOONGSON2F
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config CPU_NOP_WORKAROUNDS
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bool
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config CPU_JUMP_WORKAROUNDS
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bool
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config CPU_LOONGSON2F_WORKAROUNDS
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bool "Loongson 2F Workarounds"
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default y
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select CPU_NOP_WORKAROUNDS
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select CPU_JUMP_WORKAROUNDS
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help
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Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
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require workarounds. Without workarounds the system may hang
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unexpectedly. For more information please refer to the gas
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-mfix-loongson2f-nop and -mfix-loongson2f-jump options.
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Loongson 2F03 and later have fixed these issues and no workarounds
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are needed. The workarounds have no significant side effect on them
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but may decrease the performance of the system so this option should
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be disabled unless the kernel is intended to be run on 2F01 or 2F02
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systems.
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If unsure, please say Y.
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endif # CPU_LOONGSON2F
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2009-10-14 10:12:16 +00:00
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config SYS_SUPPORTS_ZBOOT
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bool
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select HAVE_KERNEL_GZIP
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select HAVE_KERNEL_BZIP2
|
2013-09-16 15:55:20 +00:00
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select HAVE_KERNEL_LZ4
|
2009-10-14 10:12:16 +00:00
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select HAVE_KERNEL_LZMA
|
2010-01-15 12:34:46 +00:00
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select HAVE_KERNEL_LZO
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2013-09-11 10:51:41 +00:00
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select HAVE_KERNEL_XZ
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2009-10-14 10:12:16 +00:00
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config SYS_SUPPORTS_ZBOOT_UART16550
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bool
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select SYS_SUPPORTS_ZBOOT
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2015-12-10 09:57:21 +00:00
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config SYS_SUPPORTS_ZBOOT_UART_PROM
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bool
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select SYS_SUPPORTS_ZBOOT
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2019-10-20 14:43:13 +00:00
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config CPU_LOONGSON2EF
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2009-07-02 15:27:41 +00:00
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bool
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select CPU_SUPPORTS_32BIT_KERNEL
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select CPU_SUPPORTS_64BIT_KERNEL
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select CPU_SUPPORTS_HIGHMEM
|
2012-10-18 11:54:15 +00:00
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select CPU_SUPPORTS_HUGEPAGES
|
2018-06-20 07:11:15 +00:00
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select ARCH_HAS_PHYS_TO_DMA
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2009-07-02 15:27:41 +00:00
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2019-11-04 06:11:20 +00:00
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config CPU_LOONGSON32
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2012-07-25 14:17:24 +00:00
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bool
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select CPU_MIPS32
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2019-01-22 13:04:12 +00:00
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select CPU_MIPSR2
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2012-07-25 14:17:24 +00:00
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select CPU_HAS_PREFETCH
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select CPU_SUPPORTS_32BIT_KERNEL
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select CPU_SUPPORTS_HIGHMEM
|
2014-10-10 03:40:01 +00:00
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select CPU_SUPPORTS_CPUFREQ
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2012-07-25 14:17:24 +00:00
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2013-12-18 13:12:05 +00:00
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config CPU_BMIPS32_3300
|
2013-12-18 13:12:06 +00:00
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select SMP_UP if SMP
|
2011-11-11 06:30:24 +00:00
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bool
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2013-12-18 13:12:02 +00:00
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config CPU_BMIPS4350
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bool
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select SYS_SUPPORTS_SMP
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select SYS_SUPPORTS_HOTPLUG_CPU
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config CPU_BMIPS4380
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bool
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2014-10-21 04:27:58 +00:00
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select MIPS_L1_CACHE_SHIFT_6
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2013-12-18 13:12:02 +00:00
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select SYS_SUPPORTS_SMP
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select SYS_SUPPORTS_HOTPLUG_CPU
|
2016-02-09 20:55:53 +00:00
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select CPU_HAS_RIXI
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2013-12-18 13:12:02 +00:00
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config CPU_BMIPS5000
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bool
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select MIPS_CPU_SCACHE
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2014-10-21 04:27:58 +00:00
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select MIPS_L1_CACHE_SHIFT_7
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2013-12-18 13:12:02 +00:00
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select SYS_SUPPORTS_SMP
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select SYS_SUPPORTS_HOTPLUG_CPU
|
2016-02-09 20:55:53 +00:00
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select CPU_HAS_RIXI
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2011-11-11 06:30:24 +00:00
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2019-10-20 14:43:13 +00:00
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config SYS_HAS_CPU_LOONGSON64
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2014-03-21 10:44:07 +00:00
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bool
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select CPU_SUPPORTS_CPUFREQ
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2016-03-03 01:45:09 +00:00
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select CPU_HAS_RIXI
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2014-03-21 10:44:07 +00:00
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2009-07-02 15:27:41 +00:00
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config SYS_HAS_CPU_LOONGSON2E
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2007-06-06 06:52:43 +00:00
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bool
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2009-11-06 10:45:05 +00:00
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config SYS_HAS_CPU_LOONGSON2F
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bool
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2009-11-11 05:39:12 +00:00
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select CPU_SUPPORTS_CPUFREQ
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select CPU_SUPPORTS_ADDRWINCFG if 64BIT
|
2009-11-06 10:45:05 +00:00
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|
2012-07-25 14:17:24 +00:00
|
|
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config SYS_HAS_CPU_LOONGSON1B
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bool
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|
2016-05-19 04:29:30 +00:00
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config SYS_HAS_CPU_LOONGSON1C
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bool
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|
2005-10-20 21:33:09 +00:00
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config SYS_HAS_CPU_MIPS32_R1
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bool
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config SYS_HAS_CPU_MIPS32_R2
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bool
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|
2013-12-03 10:22:26 +00:00
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config SYS_HAS_CPU_MIPS32_R3_5
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bool
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|
2015-02-27 00:16:38 +00:00
|
|
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config SYS_HAS_CPU_MIPS32_R5
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bool
|
2019-02-04 21:52:58 +00:00
|
|
|
select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
|
2015-02-27 00:16:38 +00:00
|
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|
|
2014-10-27 10:34:11 +00:00
|
|
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config SYS_HAS_CPU_MIPS32_R6
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bool
|
2019-02-04 21:52:58 +00:00
|
|
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select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
|
2014-10-27 10:34:11 +00:00
|
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|
|
2005-10-20 21:33:09 +00:00
|
|
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config SYS_HAS_CPU_MIPS64_R1
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|
|
bool
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config SYS_HAS_CPU_MIPS64_R2
|
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|
bool
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|
|
2014-10-27 10:34:11 +00:00
|
|
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config SYS_HAS_CPU_MIPS64_R6
|
|
|
|
bool
|
2019-02-04 21:52:58 +00:00
|
|
|
select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
|
2014-10-27 10:34:11 +00:00
|
|
|
|
mips: Add MIPS Warrior P5600 support
This is a MIPS32 Release 5 based IP core with XPA, EVA, dual/quad issue
exec pipes, MMU with two-levels TLB, UCA, MSA, MDU core level features
and system level features like up to six P5600 calculation cores, CM2
with L2 cache, IOCU/IOMMU (though might be unused depending on the
system-specific IP core configuration), GIC, CPC, virtualisation module,
eJTAG and PDtrace.
As being MIPS32 Release 5 based core it provides all the features
available by the CPU_MIPS32_R5 config, while adding a few more like
UCA attribute support, availability of CPU-freq (by means of L2/CM
clock ratio setting), EI/VI GIC modes detection at runtime.
In addition to this if P5600 architecture is enabled modern GNU GCC
provides a specific tuning for P5600 processors with respect to the
classic MIPS32 Release 5. First of all branch-likely avoidance is
activated only when the code is compiled with the speed optimization
(avoidance is always enabled for the pure MIPS32 Release 5
architecture). Secondly the madd/msub avoidance is enabled since
madd/msub utilization isn't profitable due to overhead of getting the
result out of the HI/LO registers. Multiply-accumulate instructions are
activated and utilized together with the necessary code reorder when
multiply-add/multiply-subtract statements are met. Finally load/store
bonding is activated by default. All of these optimizations may make
the code relatively faster than if just MIP32 release 5 architecture
was requested.
Co-developed-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-05-21 14:07:15 +00:00
|
|
|
config SYS_HAS_CPU_P5600
|
|
|
|
bool
|
|
|
|
select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
|
|
|
|
|
2005-10-20 21:33:09 +00:00
|
|
|
config SYS_HAS_CPU_R3000
|
|
|
|
bool
|
|
|
|
|
|
|
|
config SYS_HAS_CPU_TX39XX
|
|
|
|
bool
|
|
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|
|
|
|
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config SYS_HAS_CPU_VR41XX
|
|
|
|
bool
|
|
|
|
|
|
|
|
config SYS_HAS_CPU_R4X00
|
|
|
|
bool
|
|
|
|
|
|
|
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config SYS_HAS_CPU_TX49XX
|
|
|
|
bool
|
|
|
|
|
|
|
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config SYS_HAS_CPU_R5000
|
|
|
|
bool
|
|
|
|
|
2008-10-23 16:27:57 +00:00
|
|
|
config SYS_HAS_CPU_R5500
|
|
|
|
bool
|
|
|
|
|
2005-10-20 21:33:09 +00:00
|
|
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config SYS_HAS_CPU_NEVADA
|
|
|
|
bool
|
|
|
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|
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config SYS_HAS_CPU_R10000
|
|
|
|
bool
|
2019-02-04 21:52:58 +00:00
|
|
|
select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
|
2005-10-20 21:33:09 +00:00
|
|
|
|
|
|
|
config SYS_HAS_CPU_RM7000
|
|
|
|
bool
|
|
|
|
|
|
|
|
config SYS_HAS_CPU_SB1
|
|
|
|
bool
|
|
|
|
|
2009-02-02 19:30:59 +00:00
|
|
|
config SYS_HAS_CPU_CAVIUM_OCTEON
|
|
|
|
bool
|
|
|
|
|
2013-12-18 13:12:02 +00:00
|
|
|
config SYS_HAS_CPU_BMIPS
|
2010-10-17 17:56:53 +00:00
|
|
|
bool
|
|
|
|
|
2013-12-18 13:12:05 +00:00
|
|
|
config SYS_HAS_CPU_BMIPS32_3300
|
2010-10-17 17:56:53 +00:00
|
|
|
bool
|
2013-12-18 13:12:02 +00:00
|
|
|
select SYS_HAS_CPU_BMIPS
|
2010-10-17 17:56:53 +00:00
|
|
|
|
|
|
|
config SYS_HAS_CPU_BMIPS4350
|
|
|
|
bool
|
2013-12-18 13:12:02 +00:00
|
|
|
select SYS_HAS_CPU_BMIPS
|
2010-10-17 17:56:53 +00:00
|
|
|
|
|
|
|
config SYS_HAS_CPU_BMIPS4380
|
|
|
|
bool
|
2013-12-18 13:12:02 +00:00
|
|
|
select SYS_HAS_CPU_BMIPS
|
2010-10-17 17:56:53 +00:00
|
|
|
|
|
|
|
config SYS_HAS_CPU_BMIPS5000
|
|
|
|
bool
|
2013-12-18 13:12:02 +00:00
|
|
|
select SYS_HAS_CPU_BMIPS
|
2018-12-09 15:49:57 +00:00
|
|
|
select ARCH_HAS_SYNC_DMA_FOR_CPU
|
2010-10-17 17:56:53 +00:00
|
|
|
|
2011-05-06 20:06:57 +00:00
|
|
|
config SYS_HAS_CPU_XLR
|
|
|
|
bool
|
|
|
|
|
2011-11-16 00:21:28 +00:00
|
|
|
config SYS_HAS_CPU_XLP
|
|
|
|
bool
|
|
|
|
|
2007-07-14 12:24:05 +00:00
|
|
|
#
|
|
|
|
# CPU may reorder R->R, R->W, W->R, W->W
|
|
|
|
# Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
|
|
|
|
#
|
2006-10-31 03:45:07 +00:00
|
|
|
config WEAK_ORDERING
|
|
|
|
bool
|
2007-07-14 12:24:05 +00:00
|
|
|
|
|
|
|
#
|
|
|
|
# CPU may reorder reads and writes beyond LL/SC
|
|
|
|
# CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
|
|
|
|
#
|
|
|
|
config WEAK_REORDERING_BEYOND_LLSC
|
|
|
|
bool
|
2005-10-29 18:32:41 +00:00
|
|
|
endmenu
|
|
|
|
|
|
|
|
#
|
2006-06-20 16:15:20 +00:00
|
|
|
# These two indicate any level of the MIPS32 and MIPS64 architecture
|
2005-10-29 18:32:41 +00:00
|
|
|
#
|
|
|
|
config CPU_MIPS32
|
|
|
|
bool
|
mips: Add MIPS Release 5 support
There are five MIPS32/64 architecture releases currently available:
from 1 to 6 except fourth one, which was intentionally skipped.
Three of them can be called as major: 1st, 2nd and 6th, that not only
have some system level alterations, but also introduced significant
core/ISA level updates. The rest of the MIPS architecture releases are
minor.
Even though they don't have as much ISA/system/core level changes
as the major ones with respect to the previous releases, they still
provide a set of updates (I'd say they were intended to be the
intermediate releases before a major one) that might be useful for the
kernel and user-level code, when activated by the kernel or compiler.
In particular the following features were introduced or ended up being
available at/after MIPS32/64 Release 5 architecture:
+ the last release of the misaligned memory access instructions,
+ virtualisation - VZ ASE - is optional component of the arch,
+ SIMD - MSA ASE - is optional component of the arch,
+ DSP ASE is optional component of the arch,
+ CP0.Status.FR=1 for CP1.FIR.F64=1 (pure 64-bit FPU general registers)
must be available if FPU is implemented,
+ CP1.FIR.Has2008 support is required so CP1.FCSR.{ABS2008,NAN2008} bits
are available.
+ UFR/UNFR aliases to access CP0.Status.FR from user-space by means of
ctc1/cfc1 instructions (enabled by CP0.Config5.UFR),
+ CP0.COnfig5.LLB=1 and eretnc instruction are implemented to without
accidentally clearing LL-bit when returning from an interrupt,
exception, or error trap,
+ XPA feature together with extended versions of CPx registers is
introduced, which needs to have mfhc0/mthc0 instructions available.
So due to these changes GNU GCC provides an extended instructions set
support for MIPS32/64 Release 5 by default like eretnc/mfhc0/mthc0. Even
though the architecture alteration isn't that big, it still worth to be
taken into account by the kernel software. Finally we can't deny that
some optimization/limitations might be found in future and implemented
on some level in kernel or compiler. In this case having even
intermediate MIPS architecture releases support would be more than
useful.
So the most of the changes provided by this commit can be split into
either compile- or runtime configs related. The compile-time related
changes are caused by adding the new CONFIG_CPU_MIPS32_R5/CONFIG_CPU_MIPSR5
configs and concern the code activating MIPSR2 or MIPSR6 already
implemented features (like eretnc/LLbit, mthc0/mfhc0). In addition
CPU_HAS_MSA can be now freely enabled for MIPS32/64 release 5 based
platforms as this is done for CPU_MIPS32_R6 CPUs. The runtime changes
concerns the features which are handled with respect to the MIPS ISA
revision detected at run-time by means of CP0.Config.{AT,AR} bits. Alas
these fields can be used to detect either r1 or r2 or r6 releases.
But since we know which CPUs in fact support the R5 arch, we can manually
set MIPS_CPU_ISA_M32R5/MIPS_CPU_ISA_M64R5 bit of c->isa_level and then
use cpu_has_mips32r5/cpu_has_mips64r5 where it's appropriate.
Since XPA/EVA provide too complex alterationss and to have them used with
MIPS32 Release 2 charged kernels (for compatibility with current platform
configs) they are left to be setup as a separate kernel configs.
Co-developed-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-05-21 14:07:14 +00:00
|
|
|
default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R5 || \
|
mips: Add MIPS Warrior P5600 support
This is a MIPS32 Release 5 based IP core with XPA, EVA, dual/quad issue
exec pipes, MMU with two-levels TLB, UCA, MSA, MDU core level features
and system level features like up to six P5600 calculation cores, CM2
with L2 cache, IOCU/IOMMU (though might be unused depending on the
system-specific IP core configuration), GIC, CPC, virtualisation module,
eJTAG and PDtrace.
As being MIPS32 Release 5 based core it provides all the features
available by the CPU_MIPS32_R5 config, while adding a few more like
UCA attribute support, availability of CPU-freq (by means of L2/CM
clock ratio setting), EI/VI GIC modes detection at runtime.
In addition to this if P5600 architecture is enabled modern GNU GCC
provides a specific tuning for P5600 processors with respect to the
classic MIPS32 Release 5. First of all branch-likely avoidance is
activated only when the code is compiled with the speed optimization
(avoidance is always enabled for the pure MIPS32 Release 5
architecture). Secondly the madd/msub avoidance is enabled since
madd/msub utilization isn't profitable due to overhead of getting the
result out of the HI/LO registers. Multiply-accumulate instructions are
activated and utilized together with the necessary code reorder when
multiply-add/multiply-subtract statements are met. Finally load/store
bonding is activated by default. All of these optimizations may make
the code relatively faster than if just MIP32 release 5 architecture
was requested.
Co-developed-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-05-21 14:07:15 +00:00
|
|
|
CPU_MIPS32_R6 || CPU_P5600
|
2005-10-29 18:32:41 +00:00
|
|
|
|
|
|
|
config CPU_MIPS64
|
|
|
|
bool
|
mips: Add MIPS Release 5 support
There are five MIPS32/64 architecture releases currently available:
from 1 to 6 except fourth one, which was intentionally skipped.
Three of them can be called as major: 1st, 2nd and 6th, that not only
have some system level alterations, but also introduced significant
core/ISA level updates. The rest of the MIPS architecture releases are
minor.
Even though they don't have as much ISA/system/core level changes
as the major ones with respect to the previous releases, they still
provide a set of updates (I'd say they were intended to be the
intermediate releases before a major one) that might be useful for the
kernel and user-level code, when activated by the kernel or compiler.
In particular the following features were introduced or ended up being
available at/after MIPS32/64 Release 5 architecture:
+ the last release of the misaligned memory access instructions,
+ virtualisation - VZ ASE - is optional component of the arch,
+ SIMD - MSA ASE - is optional component of the arch,
+ DSP ASE is optional component of the arch,
+ CP0.Status.FR=1 for CP1.FIR.F64=1 (pure 64-bit FPU general registers)
must be available if FPU is implemented,
+ CP1.FIR.Has2008 support is required so CP1.FCSR.{ABS2008,NAN2008} bits
are available.
+ UFR/UNFR aliases to access CP0.Status.FR from user-space by means of
ctc1/cfc1 instructions (enabled by CP0.Config5.UFR),
+ CP0.COnfig5.LLB=1 and eretnc instruction are implemented to without
accidentally clearing LL-bit when returning from an interrupt,
exception, or error trap,
+ XPA feature together with extended versions of CPx registers is
introduced, which needs to have mfhc0/mthc0 instructions available.
So due to these changes GNU GCC provides an extended instructions set
support for MIPS32/64 Release 5 by default like eretnc/mfhc0/mthc0. Even
though the architecture alteration isn't that big, it still worth to be
taken into account by the kernel software. Finally we can't deny that
some optimization/limitations might be found in future and implemented
on some level in kernel or compiler. In this case having even
intermediate MIPS architecture releases support would be more than
useful.
So the most of the changes provided by this commit can be split into
either compile- or runtime configs related. The compile-time related
changes are caused by adding the new CONFIG_CPU_MIPS32_R5/CONFIG_CPU_MIPSR5
configs and concern the code activating MIPSR2 or MIPSR6 already
implemented features (like eretnc/LLbit, mthc0/mfhc0). In addition
CPU_HAS_MSA can be now freely enabled for MIPS32/64 release 5 based
platforms as this is done for CPU_MIPS32_R6 CPUs. The runtime changes
concerns the features which are handled with respect to the MIPS ISA
revision detected at run-time by means of CP0.Config.{AT,AR} bits. Alas
these fields can be used to detect either r1 or r2 or r6 releases.
But since we know which CPUs in fact support the R5 arch, we can manually
set MIPS_CPU_ISA_M32R5/MIPS_CPU_ISA_M64R5 bit of c->isa_level and then
use cpu_has_mips32r5/cpu_has_mips64r5 where it's appropriate.
Since XPA/EVA provide too complex alterationss and to have them used with
MIPS32 Release 2 charged kernels (for compatibility with current platform
configs) they are left to be setup as a separate kernel configs.
Co-developed-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-05-21 14:07:14 +00:00
|
|
|
default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R5 || \
|
|
|
|
CPU_MIPS64_R6
|
2005-10-29 18:32:41 +00:00
|
|
|
|
|
|
|
#
|
2018-11-08 23:44:55 +00:00
|
|
|
# These indicate the revision of the architecture
|
2005-10-29 18:32:41 +00:00
|
|
|
#
|
|
|
|
config CPU_MIPSR1
|
|
|
|
bool
|
|
|
|
default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
|
|
|
|
|
|
|
|
config CPU_MIPSR2
|
|
|
|
bool
|
2008-12-11 23:33:38 +00:00
|
|
|
default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
|
2016-02-09 20:55:51 +00:00
|
|
|
select CPU_HAS_RIXI
|
2020-01-13 10:14:59 +00:00
|
|
|
select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
|
2014-11-13 13:32:03 +00:00
|
|
|
select MIPS_SPRAM
|
2005-10-29 18:32:41 +00:00
|
|
|
|
mips: Add MIPS Release 5 support
There are five MIPS32/64 architecture releases currently available:
from 1 to 6 except fourth one, which was intentionally skipped.
Three of them can be called as major: 1st, 2nd and 6th, that not only
have some system level alterations, but also introduced significant
core/ISA level updates. The rest of the MIPS architecture releases are
minor.
Even though they don't have as much ISA/system/core level changes
as the major ones with respect to the previous releases, they still
provide a set of updates (I'd say they were intended to be the
intermediate releases before a major one) that might be useful for the
kernel and user-level code, when activated by the kernel or compiler.
In particular the following features were introduced or ended up being
available at/after MIPS32/64 Release 5 architecture:
+ the last release of the misaligned memory access instructions,
+ virtualisation - VZ ASE - is optional component of the arch,
+ SIMD - MSA ASE - is optional component of the arch,
+ DSP ASE is optional component of the arch,
+ CP0.Status.FR=1 for CP1.FIR.F64=1 (pure 64-bit FPU general registers)
must be available if FPU is implemented,
+ CP1.FIR.Has2008 support is required so CP1.FCSR.{ABS2008,NAN2008} bits
are available.
+ UFR/UNFR aliases to access CP0.Status.FR from user-space by means of
ctc1/cfc1 instructions (enabled by CP0.Config5.UFR),
+ CP0.COnfig5.LLB=1 and eretnc instruction are implemented to without
accidentally clearing LL-bit when returning from an interrupt,
exception, or error trap,
+ XPA feature together with extended versions of CPx registers is
introduced, which needs to have mfhc0/mthc0 instructions available.
So due to these changes GNU GCC provides an extended instructions set
support for MIPS32/64 Release 5 by default like eretnc/mfhc0/mthc0. Even
though the architecture alteration isn't that big, it still worth to be
taken into account by the kernel software. Finally we can't deny that
some optimization/limitations might be found in future and implemented
on some level in kernel or compiler. In this case having even
intermediate MIPS architecture releases support would be more than
useful.
So the most of the changes provided by this commit can be split into
either compile- or runtime configs related. The compile-time related
changes are caused by adding the new CONFIG_CPU_MIPS32_R5/CONFIG_CPU_MIPSR5
configs and concern the code activating MIPSR2 or MIPSR6 already
implemented features (like eretnc/LLbit, mthc0/mfhc0). In addition
CPU_HAS_MSA can be now freely enabled for MIPS32/64 release 5 based
platforms as this is done for CPU_MIPS32_R6 CPUs. The runtime changes
concerns the features which are handled with respect to the MIPS ISA
revision detected at run-time by means of CP0.Config.{AT,AR} bits. Alas
these fields can be used to detect either r1 or r2 or r6 releases.
But since we know which CPUs in fact support the R5 arch, we can manually
set MIPS_CPU_ISA_M32R5/MIPS_CPU_ISA_M64R5 bit of c->isa_level and then
use cpu_has_mips32r5/cpu_has_mips64r5 where it's appropriate.
Since XPA/EVA provide too complex alterationss and to have them used with
MIPS32 Release 2 charged kernels (for compatibility with current platform
configs) they are left to be setup as a separate kernel configs.
Co-developed-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-05-21 14:07:14 +00:00
|
|
|
config CPU_MIPSR5
|
|
|
|
bool
|
mips: Add MIPS Warrior P5600 support
This is a MIPS32 Release 5 based IP core with XPA, EVA, dual/quad issue
exec pipes, MMU with two-levels TLB, UCA, MSA, MDU core level features
and system level features like up to six P5600 calculation cores, CM2
with L2 cache, IOCU/IOMMU (though might be unused depending on the
system-specific IP core configuration), GIC, CPC, virtualisation module,
eJTAG and PDtrace.
As being MIPS32 Release 5 based core it provides all the features
available by the CPU_MIPS32_R5 config, while adding a few more like
UCA attribute support, availability of CPU-freq (by means of L2/CM
clock ratio setting), EI/VI GIC modes detection at runtime.
In addition to this if P5600 architecture is enabled modern GNU GCC
provides a specific tuning for P5600 processors with respect to the
classic MIPS32 Release 5. First of all branch-likely avoidance is
activated only when the code is compiled with the speed optimization
(avoidance is always enabled for the pure MIPS32 Release 5
architecture). Secondly the madd/msub avoidance is enabled since
madd/msub utilization isn't profitable due to overhead of getting the
result out of the HI/LO registers. Multiply-accumulate instructions are
activated and utilized together with the necessary code reorder when
multiply-add/multiply-subtract statements are met. Finally load/store
bonding is activated by default. All of these optimizations may make
the code relatively faster than if just MIP32 release 5 architecture
was requested.
Co-developed-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-05-21 14:07:15 +00:00
|
|
|
default y if CPU_MIPS32_R5 || CPU_MIPS64_R5 || CPU_P5600
|
mips: Add MIPS Release 5 support
There are five MIPS32/64 architecture releases currently available:
from 1 to 6 except fourth one, which was intentionally skipped.
Three of them can be called as major: 1st, 2nd and 6th, that not only
have some system level alterations, but also introduced significant
core/ISA level updates. The rest of the MIPS architecture releases are
minor.
Even though they don't have as much ISA/system/core level changes
as the major ones with respect to the previous releases, they still
provide a set of updates (I'd say they were intended to be the
intermediate releases before a major one) that might be useful for the
kernel and user-level code, when activated by the kernel or compiler.
In particular the following features were introduced or ended up being
available at/after MIPS32/64 Release 5 architecture:
+ the last release of the misaligned memory access instructions,
+ virtualisation - VZ ASE - is optional component of the arch,
+ SIMD - MSA ASE - is optional component of the arch,
+ DSP ASE is optional component of the arch,
+ CP0.Status.FR=1 for CP1.FIR.F64=1 (pure 64-bit FPU general registers)
must be available if FPU is implemented,
+ CP1.FIR.Has2008 support is required so CP1.FCSR.{ABS2008,NAN2008} bits
are available.
+ UFR/UNFR aliases to access CP0.Status.FR from user-space by means of
ctc1/cfc1 instructions (enabled by CP0.Config5.UFR),
+ CP0.COnfig5.LLB=1 and eretnc instruction are implemented to without
accidentally clearing LL-bit when returning from an interrupt,
exception, or error trap,
+ XPA feature together with extended versions of CPx registers is
introduced, which needs to have mfhc0/mthc0 instructions available.
So due to these changes GNU GCC provides an extended instructions set
support for MIPS32/64 Release 5 by default like eretnc/mfhc0/mthc0. Even
though the architecture alteration isn't that big, it still worth to be
taken into account by the kernel software. Finally we can't deny that
some optimization/limitations might be found in future and implemented
on some level in kernel or compiler. In this case having even
intermediate MIPS architecture releases support would be more than
useful.
So the most of the changes provided by this commit can be split into
either compile- or runtime configs related. The compile-time related
changes are caused by adding the new CONFIG_CPU_MIPS32_R5/CONFIG_CPU_MIPSR5
configs and concern the code activating MIPSR2 or MIPSR6 already
implemented features (like eretnc/LLbit, mthc0/mfhc0). In addition
CPU_HAS_MSA can be now freely enabled for MIPS32/64 release 5 based
platforms as this is done for CPU_MIPS32_R6 CPUs. The runtime changes
concerns the features which are handled with respect to the MIPS ISA
revision detected at run-time by means of CP0.Config.{AT,AR} bits. Alas
these fields can be used to detect either r1 or r2 or r6 releases.
But since we know which CPUs in fact support the R5 arch, we can manually
set MIPS_CPU_ISA_M32R5/MIPS_CPU_ISA_M64R5 bit of c->isa_level and then
use cpu_has_mips32r5/cpu_has_mips64r5 where it's appropriate.
Since XPA/EVA provide too complex alterationss and to have them used with
MIPS32 Release 2 charged kernels (for compatibility with current platform
configs) they are left to be setup as a separate kernel configs.
Co-developed-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-05-21 14:07:14 +00:00
|
|
|
select CPU_HAS_RIXI
|
|
|
|
select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
|
|
|
|
select MIPS_SPRAM
|
|
|
|
|
2014-10-27 10:34:11 +00:00
|
|
|
config CPU_MIPSR6
|
|
|
|
bool
|
|
|
|
default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
|
2016-02-09 20:55:51 +00:00
|
|
|
select CPU_HAS_RIXI
|
2020-01-13 10:14:59 +00:00
|
|
|
select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
|
2016-05-06 12:35:03 +00:00
|
|
|
select HAVE_ARCH_BITREVERSE
|
2016-05-06 13:36:24 +00:00
|
|
|
select MIPS_ASID_BITS_VARIABLE
|
2018-02-09 22:11:06 +00:00
|
|
|
select MIPS_CRC_SUPPORT
|
2014-11-13 13:32:03 +00:00
|
|
|
select MIPS_SPRAM
|
2005-10-29 18:32:41 +00:00
|
|
|
|
2018-11-08 23:44:55 +00:00
|
|
|
config TARGET_ISA_REV
|
|
|
|
int
|
|
|
|
default 1 if CPU_MIPSR1
|
|
|
|
default 2 if CPU_MIPSR2
|
mips: Add MIPS Release 5 support
There are five MIPS32/64 architecture releases currently available:
from 1 to 6 except fourth one, which was intentionally skipped.
Three of them can be called as major: 1st, 2nd and 6th, that not only
have some system level alterations, but also introduced significant
core/ISA level updates. The rest of the MIPS architecture releases are
minor.
Even though they don't have as much ISA/system/core level changes
as the major ones with respect to the previous releases, they still
provide a set of updates (I'd say they were intended to be the
intermediate releases before a major one) that might be useful for the
kernel and user-level code, when activated by the kernel or compiler.
In particular the following features were introduced or ended up being
available at/after MIPS32/64 Release 5 architecture:
+ the last release of the misaligned memory access instructions,
+ virtualisation - VZ ASE - is optional component of the arch,
+ SIMD - MSA ASE - is optional component of the arch,
+ DSP ASE is optional component of the arch,
+ CP0.Status.FR=1 for CP1.FIR.F64=1 (pure 64-bit FPU general registers)
must be available if FPU is implemented,
+ CP1.FIR.Has2008 support is required so CP1.FCSR.{ABS2008,NAN2008} bits
are available.
+ UFR/UNFR aliases to access CP0.Status.FR from user-space by means of
ctc1/cfc1 instructions (enabled by CP0.Config5.UFR),
+ CP0.COnfig5.LLB=1 and eretnc instruction are implemented to without
accidentally clearing LL-bit when returning from an interrupt,
exception, or error trap,
+ XPA feature together with extended versions of CPx registers is
introduced, which needs to have mfhc0/mthc0 instructions available.
So due to these changes GNU GCC provides an extended instructions set
support for MIPS32/64 Release 5 by default like eretnc/mfhc0/mthc0. Even
though the architecture alteration isn't that big, it still worth to be
taken into account by the kernel software. Finally we can't deny that
some optimization/limitations might be found in future and implemented
on some level in kernel or compiler. In this case having even
intermediate MIPS architecture releases support would be more than
useful.
So the most of the changes provided by this commit can be split into
either compile- or runtime configs related. The compile-time related
changes are caused by adding the new CONFIG_CPU_MIPS32_R5/CONFIG_CPU_MIPSR5
configs and concern the code activating MIPSR2 or MIPSR6 already
implemented features (like eretnc/LLbit, mthc0/mfhc0). In addition
CPU_HAS_MSA can be now freely enabled for MIPS32/64 release 5 based
platforms as this is done for CPU_MIPS32_R6 CPUs. The runtime changes
concerns the features which are handled with respect to the MIPS ISA
revision detected at run-time by means of CP0.Config.{AT,AR} bits. Alas
these fields can be used to detect either r1 or r2 or r6 releases.
But since we know which CPUs in fact support the R5 arch, we can manually
set MIPS_CPU_ISA_M32R5/MIPS_CPU_ISA_M64R5 bit of c->isa_level and then
use cpu_has_mips32r5/cpu_has_mips64r5 where it's appropriate.
Since XPA/EVA provide too complex alterationss and to have them used with
MIPS32 Release 2 charged kernels (for compatibility with current platform
configs) they are left to be setup as a separate kernel configs.
Co-developed-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-05-21 14:07:14 +00:00
|
|
|
default 5 if CPU_MIPSR5
|
2018-11-08 23:44:55 +00:00
|
|
|
default 6 if CPU_MIPSR6
|
|
|
|
default 0
|
|
|
|
help
|
|
|
|
Reflects the ISA revision being targeted by the kernel build. This
|
|
|
|
is effectively the Kconfig equivalent of MIPS_ISA_REV.
|
|
|
|
|
2013-12-03 10:22:26 +00:00
|
|
|
config EVA
|
|
|
|
bool
|
|
|
|
|
2015-02-27 00:16:38 +00:00
|
|
|
config XPA
|
|
|
|
bool
|
|
|
|
|
2005-10-29 18:32:41 +00:00
|
|
|
config SYS_SUPPORTS_32BIT_KERNEL
|
|
|
|
bool
|
|
|
|
config SYS_SUPPORTS_64BIT_KERNEL
|
|
|
|
bool
|
|
|
|
config CPU_SUPPORTS_32BIT_KERNEL
|
|
|
|
bool
|
|
|
|
config CPU_SUPPORTS_64BIT_KERNEL
|
|
|
|
bool
|
2009-11-11 05:39:12 +00:00
|
|
|
config CPU_SUPPORTS_CPUFREQ
|
|
|
|
bool
|
|
|
|
config CPU_SUPPORTS_ADDRWINCFG
|
|
|
|
bool
|
2009-05-28 00:47:46 +00:00
|
|
|
config CPU_SUPPORTS_HUGEPAGES
|
|
|
|
bool
|
2019-07-15 21:39:59 +00:00
|
|
|
depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA))
|
2009-10-14 19:16:56 +00:00
|
|
|
config MIPS_PGD_C0_CONTEXT
|
|
|
|
bool
|
2017-06-02 22:38:03 +00:00
|
|
|
default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
|
2005-10-29 18:32:41 +00:00
|
|
|
|
2008-09-23 07:04:26 +00:00
|
|
|
#
|
|
|
|
# Set to y for ptrace access to watch registers.
|
|
|
|
#
|
|
|
|
config HARDWARE_WATCHPOINTS
|
2019-03-11 15:54:27 +00:00
|
|
|
bool
|
|
|
|
default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
|
2008-09-23 07:04:26 +00:00
|
|
|
|
2005-10-29 18:32:41 +00:00
|
|
|
menu "Kernel type"
|
|
|
|
|
|
|
|
choice
|
|
|
|
prompt "Kernel code model"
|
|
|
|
help
|
|
|
|
You should only select this option if you have a workload that
|
|
|
|
actually benefits from 64-bit processing or if your machine has
|
|
|
|
large memory. You will only be presented a single option in this
|
|
|
|
menu if your system does not support both 32-bit and 64-bit kernels.
|
|
|
|
|
|
|
|
config 32BIT
|
|
|
|
bool "32-bit kernel"
|
|
|
|
depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
|
|
|
|
select TRAD_SIGNALS
|
|
|
|
help
|
|
|
|
Select this option if you want to build a 32-bit kernel.
|
2015-07-23 10:02:09 +00:00
|
|
|
|
2005-10-29 18:32:41 +00:00
|
|
|
config 64BIT
|
|
|
|
bool "64-bit kernel"
|
|
|
|
depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
|
|
|
|
help
|
|
|
|
Select this option if you want to build a 64-bit kernel.
|
|
|
|
|
|
|
|
endchoice
|
|
|
|
|
2012-11-22 02:33:59 +00:00
|
|
|
config KVM_GUEST
|
|
|
|
bool "KVM Guest Kernel"
|
2020-07-10 06:30:17 +00:00
|
|
|
depends on CPU_MIPS32_R2
|
2013-07-12 10:26:11 +00:00
|
|
|
depends on BROKEN_ON_SMP
|
2012-11-22 02:33:59 +00:00
|
|
|
help
|
2015-12-16 23:49:26 +00:00
|
|
|
Select this option if building a guest kernel for KVM (Trap & Emulate)
|
|
|
|
mode.
|
2012-11-22 02:33:59 +00:00
|
|
|
|
2014-05-29 09:16:36 +00:00
|
|
|
config KVM_GUEST_TIMER_FREQ
|
|
|
|
int "Count/Compare Timer Frequency (MHz)"
|
2012-11-22 02:33:59 +00:00
|
|
|
depends on KVM_GUEST
|
2014-05-29 09:16:36 +00:00
|
|
|
default 100
|
2012-11-22 02:33:59 +00:00
|
|
|
help
|
2014-05-29 09:16:36 +00:00
|
|
|
Set this to non-zero if building a guest kernel for KVM to skip RTC
|
|
|
|
emulation when determining guest CPU Frequency. Instead, the guest's
|
|
|
|
timer frequency is specified directly.
|
2012-11-22 02:33:59 +00:00
|
|
|
|
2015-05-15 01:34:43 +00:00
|
|
|
config MIPS_VA_BITS_48
|
|
|
|
bool "48 bits virtual memory"
|
|
|
|
depends on 64BIT
|
|
|
|
help
|
2017-02-17 01:27:34 +00:00
|
|
|
Support a maximum at least 48 bits of application virtual
|
|
|
|
memory. Default is 40 bits or less, depending on the CPU.
|
|
|
|
For page sizes 16k and above, this option results in a small
|
|
|
|
memory overhead for page tables. For 4k page size, a fourth
|
|
|
|
level of page tables is added which imposes both a memory
|
|
|
|
overhead as well as slower TLB fault handling.
|
|
|
|
|
2015-05-15 01:34:43 +00:00
|
|
|
If unsure, say N.
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
choice
|
|
|
|
prompt "Kernel page size"
|
|
|
|
default PAGE_SIZE_4KB
|
|
|
|
|
|
|
|
config PAGE_SIZE_4KB
|
|
|
|
bool "4kB"
|
2019-10-20 14:43:13 +00:00
|
|
|
depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64
|
2005-04-16 22:20:36 +00:00
|
|
|
help
|
2019-03-11 15:54:27 +00:00
|
|
|
This option select the standard 4kB Linux page size. On some
|
|
|
|
R3000-family processors this is the only available page size. Using
|
|
|
|
4kB page size will minimize memory consumption and is therefore
|
|
|
|
recommended for low memory systems.
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
config PAGE_SIZE_8KB
|
|
|
|
bool "8kB"
|
2019-07-22 22:00:03 +00:00
|
|
|
depends on CPU_CAVIUM_OCTEON
|
2015-05-15 01:34:43 +00:00
|
|
|
depends on !MIPS_VA_BITS_48
|
2005-04-16 22:20:36 +00:00
|
|
|
help
|
|
|
|
Using 8kB page size will result in higher performance kernel at
|
|
|
|
the price of higher memory consumption. This option is available
|
2019-07-22 22:00:03 +00:00
|
|
|
only on cnMIPS processors. Note that you will need a suitable Linux
|
|
|
|
distribution to support this.
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
config PAGE_SIZE_16KB
|
|
|
|
bool "16kB"
|
2006-05-17 13:04:30 +00:00
|
|
|
depends on !CPU_R3000 && !CPU_TX39XX
|
2005-04-16 22:20:36 +00:00
|
|
|
help
|
|
|
|
Using 16kB page size will result in higher performance kernel at
|
|
|
|
the price of higher memory consumption. This option is available on
|
2006-05-17 13:04:30 +00:00
|
|
|
all non-R3000 family processors. Note that you will need a suitable
|
|
|
|
Linux distribution to support this.
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2009-04-02 12:07:10 +00:00
|
|
|
config PAGE_SIZE_32KB
|
|
|
|
bool "32kB"
|
|
|
|
depends on CPU_CAVIUM_OCTEON
|
2015-05-15 01:34:43 +00:00
|
|
|
depends on !MIPS_VA_BITS_48
|
2009-04-02 12:07:10 +00:00
|
|
|
help
|
|
|
|
Using 32kB page size will result in higher performance kernel at
|
|
|
|
the price of higher memory consumption. This option is available
|
|
|
|
only on cnMIPS cores. Note that you will need a suitable Linux
|
|
|
|
distribution to support this.
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config PAGE_SIZE_64KB
|
|
|
|
bool "64kB"
|
2017-06-05 18:21:27 +00:00
|
|
|
depends on !CPU_R3000 && !CPU_TX39XX
|
2005-04-16 22:20:36 +00:00
|
|
|
help
|
|
|
|
Using 64kB page size will result in higher performance kernel at
|
|
|
|
the price of higher memory consumption. This option is available on
|
|
|
|
all non-R3000 family processor. Not that at the time of this
|
2006-05-17 13:04:30 +00:00
|
|
|
writing this option is still high experimental.
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
endchoice
|
|
|
|
|
2010-10-11 21:52:45 +00:00
|
|
|
config FORCE_MAX_ZONEORDER
|
|
|
|
int "Maximum zone order"
|
2014-01-21 11:22:35 +00:00
|
|
|
range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
|
|
|
|
default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
|
|
|
|
range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
|
|
|
|
default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
|
|
|
|
range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
|
|
|
|
default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
|
2010-10-11 21:52:45 +00:00
|
|
|
range 11 64
|
|
|
|
default "11"
|
|
|
|
help
|
|
|
|
The kernel memory allocator divides physically contiguous memory
|
|
|
|
blocks into "zones", where each zone is a power of two number of
|
|
|
|
pages. This option selects the largest power of two that the kernel
|
|
|
|
keeps in the memory allocator. If you need to allocate very large
|
|
|
|
blocks of physically contiguous memory, then you may need to
|
|
|
|
increase this value.
|
|
|
|
|
|
|
|
This config option is actually maximum order plus one. For example,
|
|
|
|
a value of 11 means that the largest free memory block is 2^10 pages.
|
|
|
|
|
|
|
|
The page size is not necessarily 4KB. Keep this in mind
|
|
|
|
when choosing a value for this option.
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config BOARD_SCACHE
|
|
|
|
bool
|
|
|
|
|
|
|
|
config IP22_CPU_SCACHE
|
|
|
|
bool
|
|
|
|
select BOARD_SCACHE
|
|
|
|
|
2006-06-20 16:15:20 +00:00
|
|
|
#
|
|
|
|
# Support for a MIPS32 / MIPS64 style S-caches
|
|
|
|
#
|
|
|
|
config MIPS_CPU_SCACHE
|
|
|
|
bool
|
|
|
|
select BOARD_SCACHE
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config R5000_CPU_SCACHE
|
|
|
|
bool
|
|
|
|
select BOARD_SCACHE
|
|
|
|
|
|
|
|
config RM7000_CPU_SCACHE
|
|
|
|
bool
|
|
|
|
select BOARD_SCACHE
|
|
|
|
|
|
|
|
config SIBYTE_DMA_PAGEOPS
|
|
|
|
bool "Use DMA to clear/copy pages"
|
|
|
|
depends on CPU_SB1
|
|
|
|
help
|
|
|
|
Instead of using the CPU to zero and copy pages, use a Data Mover
|
|
|
|
channel. These DMA channels are otherwise unused by the standard
|
|
|
|
SiByte Linux port. Seems to give a small performance benefit.
|
|
|
|
|
|
|
|
config CPU_HAS_PREFETCH
|
2005-08-05 14:28:54 +00:00
|
|
|
bool
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2012-01-31 17:18:43 +00:00
|
|
|
config CPU_GENERIC_DUMP_TLB
|
|
|
|
bool
|
2019-07-22 22:00:03 +00:00
|
|
|
default y if !(CPU_R3000 || CPU_TX39XX)
|
2012-01-31 17:18:43 +00:00
|
|
|
|
2018-11-07 23:14:02 +00:00
|
|
|
config MIPS_FP_SUPPORT
|
2018-11-07 23:14:11 +00:00
|
|
|
bool "Floating Point support" if EXPERT
|
|
|
|
default y
|
|
|
|
help
|
|
|
|
Select y to include support for floating point in the kernel
|
|
|
|
including initialization of FPU hardware, FP context save & restore
|
|
|
|
and emulation of an FPU where necessary. Without this support any
|
|
|
|
userland program attempting to use floating point instructions will
|
|
|
|
receive a SIGILL.
|
|
|
|
|
|
|
|
If you know that your userland will not attempt to use floating point
|
|
|
|
instructions then you can say n here to shrink the kernel a little.
|
|
|
|
|
|
|
|
If unsure, say y.
|
2018-11-07 23:14:02 +00:00
|
|
|
|
2018-11-07 23:14:02 +00:00
|
|
|
config CPU_R2300_FPU
|
|
|
|
bool
|
2018-11-07 23:14:02 +00:00
|
|
|
depends on MIPS_FP_SUPPORT
|
2018-11-07 23:14:02 +00:00
|
|
|
default y if CPU_R3000 || CPU_TX39XX
|
|
|
|
|
2019-08-31 15:40:43 +00:00
|
|
|
config CPU_R3K_TLB
|
|
|
|
bool
|
|
|
|
|
2012-01-31 17:18:44 +00:00
|
|
|
config CPU_R4K_FPU
|
|
|
|
bool
|
2018-11-07 23:14:02 +00:00
|
|
|
depends on MIPS_FP_SUPPORT
|
2018-11-07 23:14:02 +00:00
|
|
|
default y if !CPU_R2300_FPU
|
2012-01-31 17:18:44 +00:00
|
|
|
|
2012-01-31 17:18:45 +00:00
|
|
|
config CPU_R4K_CACHE_TLB
|
|
|
|
bool
|
2019-08-31 15:40:43 +00:00
|
|
|
default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
|
2012-01-31 17:18:45 +00:00
|
|
|
|
2006-10-06 16:36:20 +00:00
|
|
|
config MIPS_MT_SMP
|
2014-04-08 10:59:10 +00:00
|
|
|
bool "MIPS MT SMP support (1 TC on each available VPE)"
|
2017-08-07 23:01:16 +00:00
|
|
|
default y
|
2017-08-07 23:18:04 +00:00
|
|
|
depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
|
2006-04-24 13:58:53 +00:00
|
|
|
select CPU_MIPSR2_IRQ_VI
|
2007-05-08 13:05:39 +00:00
|
|
|
select CPU_MIPSR2_IRQ_EI
|
2013-10-04 21:23:28 +00:00
|
|
|
select SYNC_R4K
|
2006-06-05 16:24:46 +00:00
|
|
|
select MIPS_MT
|
2006-04-05 08:45:45 +00:00
|
|
|
select SMP
|
2007-11-19 12:23:51 +00:00
|
|
|
select SMP_UP
|
2013-10-04 21:23:28 +00:00
|
|
|
select SYS_SUPPORTS_SMP
|
|
|
|
select SYS_SUPPORTS_SCHED_SMT
|
2012-07-13 20:44:53 +00:00
|
|
|
select MIPS_PERF_SHARED_TC_COUNTERS
|
2006-06-05 16:24:46 +00:00
|
|
|
help
|
2013-10-04 21:23:28 +00:00
|
|
|
This is a kernel model which is known as SMVP. This is supported
|
|
|
|
on cores with the MT ASE and uses the available VPEs to implement
|
|
|
|
virtual processors which supports SMP. This is equivalent to the
|
|
|
|
Intel Hyperthreading feature. For further information go to
|
|
|
|
<http://www.imgtec.com/mips/mips-multithreading.asp>.
|
2006-04-05 08:45:45 +00:00
|
|
|
|
2006-06-05 16:24:46 +00:00
|
|
|
config MIPS_MT
|
|
|
|
bool
|
|
|
|
|
2007-03-02 20:42:04 +00:00
|
|
|
config SCHED_SMT
|
|
|
|
bool "SMT (multithreading) scheduler support"
|
|
|
|
depends on SYS_SUPPORTS_SCHED_SMT
|
|
|
|
default n
|
|
|
|
help
|
|
|
|
SMT scheduler support improves the CPU scheduler's decision making
|
|
|
|
when dealing with MIPS MT enabled cores at a cost of slightly
|
|
|
|
increased overhead in some places. If unsure say N here.
|
|
|
|
|
|
|
|
config SYS_SUPPORTS_SCHED_SMT
|
|
|
|
bool
|
|
|
|
|
2006-06-05 16:24:46 +00:00
|
|
|
config SYS_SUPPORTS_MULTITHREADING
|
|
|
|
bool
|
|
|
|
|
2006-04-05 08:45:47 +00:00
|
|
|
config MIPS_MT_FPAFF
|
|
|
|
bool "Dynamic FPU affinity for FP-intensive threads"
|
|
|
|
default y
|
2014-05-23 14:29:44 +00:00
|
|
|
depends on MIPS_MT_SMP
|
2007-07-27 18:31:10 +00:00
|
|
|
|
2014-12-03 15:47:03 +00:00
|
|
|
config MIPSR2_TO_R6_EMULATOR
|
|
|
|
bool "MIPS R2-to-R6 emulator"
|
2016-10-17 14:34:37 +00:00
|
|
|
depends on CPU_MIPSR6
|
2018-11-07 23:14:02 +00:00
|
|
|
depends on MIPS_FP_SUPPORT
|
2014-12-03 15:47:03 +00:00
|
|
|
default y
|
|
|
|
help
|
|
|
|
Choose this option if you want to run non-R6 MIPS userland code.
|
|
|
|
Even if you say 'Y' here, the emulator will still be disabled by
|
2015-03-10 12:30:56 +00:00
|
|
|
default. You can enable it using the 'mipsr2emu' kernel option.
|
2014-12-03 15:47:03 +00:00
|
|
|
The only reason this is a build-time option is to save ~14K from the
|
|
|
|
final kernel image.
|
|
|
|
|
2018-01-15 20:54:35 +00:00
|
|
|
config SYS_SUPPORTS_VPE_LOADER
|
|
|
|
bool
|
|
|
|
depends on SYS_SUPPORTS_MULTITHREADING
|
|
|
|
help
|
|
|
|
Indicates that the platform supports the VPE loader, and provides
|
|
|
|
physical_memsize.
|
|
|
|
|
2007-07-27 18:31:10 +00:00
|
|
|
config MIPS_VPE_LOADER
|
|
|
|
bool "VPE loader support."
|
2018-01-15 20:54:35 +00:00
|
|
|
depends on SYS_SUPPORTS_VPE_LOADER && MODULES
|
2007-07-27 18:31:10 +00:00
|
|
|
select CPU_MIPSR2_IRQ_VI
|
|
|
|
select CPU_MIPSR2_IRQ_EI
|
|
|
|
select MIPS_MT
|
|
|
|
help
|
|
|
|
Includes a loader for loading an elf relocatable object
|
|
|
|
onto another VPE and running it.
|
2006-04-05 08:45:47 +00:00
|
|
|
|
2013-10-30 20:52:07 +00:00
|
|
|
config MIPS_VPE_LOADER_CMP
|
|
|
|
bool
|
|
|
|
default "y"
|
|
|
|
depends on MIPS_VPE_LOADER && MIPS_CMP
|
|
|
|
|
2013-10-30 20:52:06 +00:00
|
|
|
config MIPS_VPE_LOADER_MT
|
|
|
|
bool
|
|
|
|
default "y"
|
|
|
|
depends on MIPS_VPE_LOADER && !MIPS_CMP
|
|
|
|
|
2005-07-14 15:57:16 +00:00
|
|
|
config MIPS_VPE_LOADER_TOM
|
|
|
|
bool "Load VPE program into memory hidden from linux"
|
|
|
|
depends on MIPS_VPE_LOADER
|
|
|
|
default y
|
|
|
|
help
|
|
|
|
The loader can use memory that is present but has been hidden from
|
|
|
|
Linux using the kernel command line option "mem=xxMB". It's up to
|
|
|
|
you to ensure the amount you put in the option and the space your
|
|
|
|
program requires is less or equal to the amount physically present.
|
|
|
|
|
|
|
|
config MIPS_VPE_APSP_API
|
2005-10-29 18:32:41 +00:00
|
|
|
bool "Enable support for AP/SP API (RTLX)"
|
|
|
|
depends on MIPS_VPE_LOADER
|
2005-07-14 15:57:16 +00:00
|
|
|
|
2014-01-01 15:29:03 +00:00
|
|
|
config MIPS_VPE_APSP_API_CMP
|
|
|
|
bool
|
|
|
|
default "y"
|
|
|
|
depends on MIPS_VPE_APSP_API && MIPS_CMP
|
|
|
|
|
2014-01-01 15:26:46 +00:00
|
|
|
config MIPS_VPE_APSP_API_MT
|
|
|
|
bool
|
|
|
|
default "y"
|
|
|
|
depends on MIPS_VPE_APSP_API && !MIPS_CMP
|
|
|
|
|
2008-10-03 23:06:29 +00:00
|
|
|
config MIPS_CMP
|
2014-01-15 10:32:00 +00:00
|
|
|
bool "MIPS CMP framework support (DEPRECATED)"
|
2015-07-09 09:40:38 +00:00
|
|
|
depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
|
2014-07-22 08:29:34 +00:00
|
|
|
select SMP
|
2009-06-17 23:40:34 +00:00
|
|
|
select SYNC_R4K
|
2014-07-22 08:29:34 +00:00
|
|
|
select SYS_SUPPORTS_SMP
|
2008-10-03 23:06:29 +00:00
|
|
|
select WEAK_ORDERING
|
|
|
|
default n
|
|
|
|
help
|
2014-01-15 10:31:58 +00:00
|
|
|
Select this if you are using a bootloader which implements the "CMP
|
|
|
|
framework" protocol (ie. YAMON) and want your kernel to make use of
|
|
|
|
its ability to start secondary CPUs.
|
2008-10-03 23:06:29 +00:00
|
|
|
|
2014-01-15 10:32:00 +00:00
|
|
|
Unless you have a specific need, you should use CONFIG_MIPS_CPS
|
|
|
|
instead of this.
|
|
|
|
|
2014-01-15 10:31:53 +00:00
|
|
|
config MIPS_CPS
|
|
|
|
bool "MIPS Coherent Processing System support"
|
2016-02-03 03:15:33 +00:00
|
|
|
depends on SYS_SUPPORTS_MIPS_CPS
|
2014-01-15 10:31:53 +00:00
|
|
|
select MIPS_CM
|
2014-04-14 13:13:57 +00:00
|
|
|
select MIPS_CPS_PM if HOTPLUG_CPU
|
2014-01-15 10:31:53 +00:00
|
|
|
select SMP
|
|
|
|
select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
|
2014-04-14 13:13:57 +00:00
|
|
|
select SYS_SUPPORTS_HOTPLUG_CPU
|
2017-06-02 21:48:52 +00:00
|
|
|
select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
|
2014-01-15 10:31:53 +00:00
|
|
|
select SYS_SUPPORTS_SMP
|
|
|
|
select WEAK_ORDERING
|
|
|
|
help
|
|
|
|
Select this if you wish to run an SMP kernel across multiple cores
|
|
|
|
within a MIPS Coherent Processing System. When this option is
|
|
|
|
enabled the kernel will probe for other cores and boot them with
|
|
|
|
no external assistance. It is safe to enable this when hardware
|
|
|
|
support is unavailable.
|
|
|
|
|
2014-04-14 10:00:56 +00:00
|
|
|
config MIPS_CPS_PM
|
2014-09-18 15:09:49 +00:00
|
|
|
depends on MIPS_CPS
|
2014-04-14 10:00:56 +00:00
|
|
|
bool
|
|
|
|
|
2014-01-15 10:31:51 +00:00
|
|
|
config MIPS_CM
|
|
|
|
bool
|
2017-08-13 02:49:42 +00:00
|
|
|
select MIPS_CPC
|
2014-01-15 10:31:51 +00:00
|
|
|
|
2014-01-15 10:31:52 +00:00
|
|
|
config MIPS_CPC
|
|
|
|
bool
|
2008-10-03 23:06:29 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config SB1_PASS_2_WORKAROUNDS
|
|
|
|
bool
|
|
|
|
depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
|
|
|
|
default y
|
|
|
|
|
|
|
|
config SB1_PASS_2_1_WORKAROUNDS
|
|
|
|
bool
|
|
|
|
depends on CPU_SB1 && CPU_SB1_PASS_2
|
|
|
|
default y
|
|
|
|
|
2014-07-21 07:46:14 +00:00
|
|
|
choice
|
|
|
|
prompt "SmartMIPS or microMIPS ASE support"
|
|
|
|
|
|
|
|
config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
|
|
|
|
bool "None"
|
|
|
|
help
|
|
|
|
Select this if you want neither microMIPS nor SmartMIPS support
|
|
|
|
|
2007-02-02 16:41:47 +00:00
|
|
|
config CPU_HAS_SMARTMIPS
|
|
|
|
depends on SYS_SUPPORTS_SMARTMIPS
|
2014-07-21 07:46:14 +00:00
|
|
|
bool "SmartMIPS"
|
2007-02-02 16:41:47 +00:00
|
|
|
help
|
|
|
|
SmartMIPS is a extension of the MIPS32 architecture aimed at
|
|
|
|
increased security at both hardware and software level for
|
|
|
|
smartcards. Enabling this option will allow proper use of the
|
|
|
|
SmartMIPS instructions by Linux applications. However a kernel with
|
|
|
|
this option will not work on a MIPS core without SmartMIPS core. If
|
|
|
|
you don't know you probably don't have SmartMIPS and should say N
|
|
|
|
here.
|
|
|
|
|
2013-03-25 18:27:11 +00:00
|
|
|
config CPU_MICROMIPS
|
2014-10-27 10:34:11 +00:00
|
|
|
depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
|
2014-07-21 07:46:14 +00:00
|
|
|
bool "microMIPS"
|
2013-03-25 18:27:11 +00:00
|
|
|
help
|
|
|
|
When this option is enabled the kernel will be built using the
|
|
|
|
microMIPS ISA
|
|
|
|
|
2014-07-21 07:46:14 +00:00
|
|
|
endchoice
|
|
|
|
|
2014-01-27 15:23:10 +00:00
|
|
|
config CPU_HAS_MSA
|
2015-07-27 19:58:27 +00:00
|
|
|
bool "Support for the MIPS SIMD Architecture"
|
2014-01-27 15:23:10 +00:00
|
|
|
depends on CPU_SUPPORTS_MSA
|
2018-11-07 23:14:02 +00:00
|
|
|
depends on MIPS_FP_SUPPORT
|
2014-07-11 15:47:14 +00:00
|
|
|
depends on 64BIT || MIPS_O32_FP64_SUPPORT
|
2014-01-27 15:23:10 +00:00
|
|
|
help
|
|
|
|
MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
|
|
|
|
and a set of SIMD instructions to operate on them. When this option
|
2014-01-27 15:23:11 +00:00
|
|
|
is enabled the kernel will support allocating & switching MSA
|
|
|
|
vector register contexts. If you know that your kernel will only be
|
|
|
|
running on CPUs which do not support MSA or that your userland will
|
|
|
|
not be making use of it then you may wish to say N here to reduce
|
|
|
|
the size & complexity of your kernel.
|
2014-01-27 15:23:10 +00:00
|
|
|
|
|
|
|
If unsure, say Y.
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config CPU_HAS_WB
|
2006-04-24 13:58:53 +00:00
|
|
|
bool
|
2005-07-14 15:57:16 +00:00
|
|
|
|
2011-11-16 01:25:45 +00:00
|
|
|
config XKS01
|
|
|
|
bool
|
|
|
|
|
2020-01-13 10:14:59 +00:00
|
|
|
config CPU_HAS_DIEI
|
|
|
|
depends on !CPU_DIEI_BROKEN
|
|
|
|
bool
|
|
|
|
|
|
|
|
config CPU_DIEI_BROKEN
|
|
|
|
bool
|
|
|
|
|
2016-02-09 20:55:51 +00:00
|
|
|
config CPU_HAS_RIXI
|
|
|
|
bool
|
|
|
|
|
2020-01-22 10:58:50 +00:00
|
|
|
config CPU_NO_LOAD_STORE_LR
|
MIPS: Add Kconfig variable for CPUs with unaligned load/store instructions
MIPSR6 CPUs do not support unaligned load/store instructions
(LWL, LWR, SWL, SWR and LDL, LDR, SDL, SDR for 64bit).
Currently the MIPS tree has some special cases to avoid these
instructions, and the code is testing for !CONFIG_CPU_MIPSR6.
This patch declares a new Kconfig variable:
CONFIG_CPU_HAS_LOAD_STORE_LR.
This variable indicates that the CPU supports these instructions.
Then, the patch does the following:
- Carefully selects this option on all CPUs except MIPSR6.
- Switches all the special cases to test for the new variable,
and inverts the logic:
'#ifndef CONFIG_CPU_MIPSR6' turns into
'#ifdef CONFIG_CPU_HAS_LOAD_STORE_LR'
and vice-versa.
Also, when this variable is NOT selected (e.g. MIPSR6),
CONFIG_GENERIC_CSUM will default to 'y', to compile generic
C checksum code (instead of special assembly code that uses the
unsupported instructions).
This commit should not affect any existing CPU, and is required
for future Lexra CPU support, that misses these instructions too.
Signed-off-by: Yasha Cherikovsky <yasha.che3@gmail.com>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/20808/
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Burton <paul.burton@mips.com>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
2018-09-26 11:16:15 +00:00
|
|
|
bool
|
|
|
|
help
|
2020-01-22 10:58:50 +00:00
|
|
|
CPU lacks support for unaligned load and store instructions:
|
MIPS: Add Kconfig variable for CPUs with unaligned load/store instructions
MIPSR6 CPUs do not support unaligned load/store instructions
(LWL, LWR, SWL, SWR and LDL, LDR, SDL, SDR for 64bit).
Currently the MIPS tree has some special cases to avoid these
instructions, and the code is testing for !CONFIG_CPU_MIPSR6.
This patch declares a new Kconfig variable:
CONFIG_CPU_HAS_LOAD_STORE_LR.
This variable indicates that the CPU supports these instructions.
Then, the patch does the following:
- Carefully selects this option on all CPUs except MIPSR6.
- Switches all the special cases to test for the new variable,
and inverts the logic:
'#ifndef CONFIG_CPU_MIPSR6' turns into
'#ifdef CONFIG_CPU_HAS_LOAD_STORE_LR'
and vice-versa.
Also, when this variable is NOT selected (e.g. MIPSR6),
CONFIG_GENERIC_CSUM will default to 'y', to compile generic
C checksum code (instead of special assembly code that uses the
unsupported instructions).
This commit should not affect any existing CPU, and is required
for future Lexra CPU support, that misses these instructions too.
Signed-off-by: Yasha Cherikovsky <yasha.che3@gmail.com>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/20808/
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Burton <paul.burton@mips.com>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
2018-09-26 11:16:15 +00:00
|
|
|
LWL, LWR, SWL, SWR (Load/store word left/right).
|
2020-01-22 10:58:50 +00:00
|
|
|
LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit
|
|
|
|
systems).
|
MIPS: Add Kconfig variable for CPUs with unaligned load/store instructions
MIPSR6 CPUs do not support unaligned load/store instructions
(LWL, LWR, SWL, SWR and LDL, LDR, SDL, SDR for 64bit).
Currently the MIPS tree has some special cases to avoid these
instructions, and the code is testing for !CONFIG_CPU_MIPSR6.
This patch declares a new Kconfig variable:
CONFIG_CPU_HAS_LOAD_STORE_LR.
This variable indicates that the CPU supports these instructions.
Then, the patch does the following:
- Carefully selects this option on all CPUs except MIPSR6.
- Switches all the special cases to test for the new variable,
and inverts the logic:
'#ifndef CONFIG_CPU_MIPSR6' turns into
'#ifdef CONFIG_CPU_HAS_LOAD_STORE_LR'
and vice-versa.
Also, when this variable is NOT selected (e.g. MIPSR6),
CONFIG_GENERIC_CSUM will default to 'y', to compile generic
C checksum code (instead of special assembly code that uses the
unsupported instructions).
This commit should not affect any existing CPU, and is required
for future Lexra CPU support, that misses these instructions too.
Signed-off-by: Yasha Cherikovsky <yasha.che3@gmail.com>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/20808/
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Burton <paul.burton@mips.com>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
2018-09-26 11:16:15 +00:00
|
|
|
|
2006-06-05 16:24:46 +00:00
|
|
|
#
|
|
|
|
# Vectored interrupt mode is an R2 feature
|
|
|
|
#
|
2005-07-14 15:57:16 +00:00
|
|
|
config CPU_MIPSR2_IRQ_VI
|
2006-06-05 16:24:46 +00:00
|
|
|
bool
|
2005-07-14 15:57:16 +00:00
|
|
|
|
2006-06-05 16:24:46 +00:00
|
|
|
#
|
|
|
|
# Extended interrupt mode is an R2 feature
|
|
|
|
#
|
2005-07-14 15:57:16 +00:00
|
|
|
config CPU_MIPSR2_IRQ_EI
|
2006-06-05 16:24:46 +00:00
|
|
|
bool
|
2005-07-14 15:57:16 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config CPU_HAS_SYNC
|
|
|
|
bool
|
|
|
|
depends on !CPU_R3000
|
|
|
|
default y
|
|
|
|
|
2007-10-23 11:43:11 +00:00
|
|
|
#
|
|
|
|
# CPU non-features
|
|
|
|
#
|
|
|
|
config CPU_DADDI_WORKAROUNDS
|
|
|
|
bool
|
|
|
|
|
|
|
|
config CPU_R4000_WORKAROUNDS
|
|
|
|
bool
|
|
|
|
select CPU_R4400_WORKAROUNDS
|
|
|
|
|
|
|
|
config CPU_R4400_WORKAROUNDS
|
|
|
|
bool
|
|
|
|
|
2019-10-01 23:04:32 +00:00
|
|
|
config CPU_R4X00_BUGS64
|
|
|
|
bool
|
|
|
|
default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1)
|
|
|
|
|
2016-05-06 13:36:23 +00:00
|
|
|
config MIPS_ASID_SHIFT
|
|
|
|
int
|
|
|
|
default 6 if CPU_R3000 || CPU_TX39XX
|
|
|
|
default 0
|
|
|
|
|
|
|
|
config MIPS_ASID_BITS
|
|
|
|
int
|
2016-05-06 13:36:24 +00:00
|
|
|
default 0 if MIPS_ASID_BITS_VARIABLE
|
2016-05-06 13:36:23 +00:00
|
|
|
default 6 if CPU_R3000 || CPU_TX39XX
|
|
|
|
default 8
|
|
|
|
|
2016-05-06 13:36:24 +00:00
|
|
|
config MIPS_ASID_BITS_VARIABLE
|
|
|
|
bool
|
|
|
|
|
2018-02-09 22:11:06 +00:00
|
|
|
config MIPS_CRC_SUPPORT
|
|
|
|
bool
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
#
|
|
|
|
# - Highmem only makes sense for the 32-bit kernel.
|
|
|
|
# - The current highmem code will only work properly on physically indexed
|
|
|
|
# caches such as R3000, SB1, R7000 or those that look like they're virtually
|
|
|
|
# indexed such as R4000/R4400 SC and MC versions or R10000. So for the
|
|
|
|
# moment we protect the user and offer the highmem option only on machines
|
|
|
|
# where it's known to be safe. This will not offer highmem on a few systems
|
|
|
|
# such as MIPS32 and MIPS64 CPUs which may have virtual and physically
|
|
|
|
# indexed CPUs but we're playing safe.
|
2005-08-10 15:17:11 +00:00
|
|
|
# - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
|
|
|
|
# know they might have memory configurations that could make use of highmem
|
|
|
|
# support.
|
2005-04-16 22:20:36 +00:00
|
|
|
#
|
|
|
|
config HIGHMEM
|
|
|
|
bool "High Memory Support"
|
2013-12-03 10:22:26 +00:00
|
|
|
depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
|
2005-08-10 15:17:11 +00:00
|
|
|
|
|
|
|
config CPU_SUPPORTS_HIGHMEM
|
|
|
|
bool
|
|
|
|
|
|
|
|
config SYS_SUPPORTS_HIGHMEM
|
|
|
|
bool
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-02-02 16:41:47 +00:00
|
|
|
config SYS_SUPPORTS_SMARTMIPS
|
|
|
|
bool
|
|
|
|
|
2013-02-05 22:52:02 +00:00
|
|
|
config SYS_SUPPORTS_MICROMIPS
|
|
|
|
bool
|
|
|
|
|
2014-04-28 23:49:24 +00:00
|
|
|
config SYS_SUPPORTS_MIPS16
|
|
|
|
bool
|
|
|
|
help
|
|
|
|
This option must be set if a kernel might be executed on a MIPS16-
|
|
|
|
enabled CPU even if MIPS16 is not actually being used. In other
|
|
|
|
words, it makes the kernel MIPS16-tolerant.
|
|
|
|
|
2014-01-27 15:23:10 +00:00
|
|
|
config CPU_SUPPORTS_MSA
|
|
|
|
bool
|
|
|
|
|
2005-06-25 21:54:31 +00:00
|
|
|
config ARCH_FLATMEM_ENABLE
|
|
|
|
def_bool y
|
2019-10-20 14:43:13 +00:00
|
|
|
depends on !NUMA && !CPU_LOONGSON2EF
|
2005-06-25 21:54:31 +00:00
|
|
|
|
2006-07-02 15:09:47 +00:00
|
|
|
config ARCH_SPARSEMEM_ENABLE
|
|
|
|
bool
|
2019-09-16 11:13:10 +00:00
|
|
|
select SPARSEMEM_STATIC if !SGI_IP27
|
2006-07-02 15:09:47 +00:00
|
|
|
|
2006-06-11 22:03:08 +00:00
|
|
|
config NUMA
|
|
|
|
bool "NUMA Support"
|
|
|
|
depends on SYS_SUPPORTS_NUMA
|
|
|
|
help
|
|
|
|
Say Y to compile the kernel to support NUMA (Non-Uniform Memory
|
|
|
|
Access). This option improves performance on systems with more
|
|
|
|
than two nodes; on two node systems it is generally better to
|
2020-02-01 01:55:43 +00:00
|
|
|
leave it disabled; on single node systems leave this option
|
2006-06-11 22:03:08 +00:00
|
|
|
disabled.
|
|
|
|
|
|
|
|
config SYS_SUPPORTS_NUMA
|
|
|
|
bool
|
|
|
|
|
2020-01-09 12:23:31 +00:00
|
|
|
config HAVE_SETUP_PER_CPU_AREA
|
|
|
|
def_bool y
|
|
|
|
depends on NUMA
|
|
|
|
|
|
|
|
config NEED_PER_CPU_EMBED_FIRST_CHUNK
|
|
|
|
def_bool y
|
|
|
|
depends on NUMA
|
|
|
|
|
2016-03-31 09:05:39 +00:00
|
|
|
config RELOCATABLE
|
|
|
|
bool "Relocatable kernel"
|
mips: Add MIPS Release 5 support
There are five MIPS32/64 architecture releases currently available:
from 1 to 6 except fourth one, which was intentionally skipped.
Three of them can be called as major: 1st, 2nd and 6th, that not only
have some system level alterations, but also introduced significant
core/ISA level updates. The rest of the MIPS architecture releases are
minor.
Even though they don't have as much ISA/system/core level changes
as the major ones with respect to the previous releases, they still
provide a set of updates (I'd say they were intended to be the
intermediate releases before a major one) that might be useful for the
kernel and user-level code, when activated by the kernel or compiler.
In particular the following features were introduced or ended up being
available at/after MIPS32/64 Release 5 architecture:
+ the last release of the misaligned memory access instructions,
+ virtualisation - VZ ASE - is optional component of the arch,
+ SIMD - MSA ASE - is optional component of the arch,
+ DSP ASE is optional component of the arch,
+ CP0.Status.FR=1 for CP1.FIR.F64=1 (pure 64-bit FPU general registers)
must be available if FPU is implemented,
+ CP1.FIR.Has2008 support is required so CP1.FCSR.{ABS2008,NAN2008} bits
are available.
+ UFR/UNFR aliases to access CP0.Status.FR from user-space by means of
ctc1/cfc1 instructions (enabled by CP0.Config5.UFR),
+ CP0.COnfig5.LLB=1 and eretnc instruction are implemented to without
accidentally clearing LL-bit when returning from an interrupt,
exception, or error trap,
+ XPA feature together with extended versions of CPx registers is
introduced, which needs to have mfhc0/mthc0 instructions available.
So due to these changes GNU GCC provides an extended instructions set
support for MIPS32/64 Release 5 by default like eretnc/mfhc0/mthc0. Even
though the architecture alteration isn't that big, it still worth to be
taken into account by the kernel software. Finally we can't deny that
some optimization/limitations might be found in future and implemented
on some level in kernel or compiler. In this case having even
intermediate MIPS architecture releases support would be more than
useful.
So the most of the changes provided by this commit can be split into
either compile- or runtime configs related. The compile-time related
changes are caused by adding the new CONFIG_CPU_MIPS32_R5/CONFIG_CPU_MIPSR5
configs and concern the code activating MIPSR2 or MIPSR6 already
implemented features (like eretnc/LLbit, mthc0/mfhc0). In addition
CPU_HAS_MSA can be now freely enabled for MIPS32/64 release 5 based
platforms as this is done for CPU_MIPS32_R6 CPUs. The runtime changes
concerns the features which are handled with respect to the MIPS ISA
revision detected at run-time by means of CP0.Config.{AT,AR} bits. Alas
these fields can be used to detect either r1 or r2 or r6 releases.
But since we know which CPUs in fact support the R5 arch, we can manually
set MIPS_CPU_ISA_M32R5/MIPS_CPU_ISA_M64R5 bit of c->isa_level and then
use cpu_has_mips32r5/cpu_has_mips64r5 where it's appropriate.
Since XPA/EVA provide too complex alterationss and to have them used with
MIPS32 Release 2 charged kernels (for compatibility with current platform
configs) they are left to be setup as a separate kernel configs.
Co-developed-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-05-21 14:07:14 +00:00
|
|
|
depends on SYS_SUPPORTS_RELOCATABLE
|
|
|
|
depends on CPU_MIPS32_R2 || CPU_MIPS64_R2 || \
|
|
|
|
CPU_MIPS32_R5 || CPU_MIPS64_R5 || \
|
|
|
|
CPU_MIPS32_R6 || CPU_MIPS64_R6 || \
|
mips: Add MIPS Warrior P5600 support
This is a MIPS32 Release 5 based IP core with XPA, EVA, dual/quad issue
exec pipes, MMU with two-levels TLB, UCA, MSA, MDU core level features
and system level features like up to six P5600 calculation cores, CM2
with L2 cache, IOCU/IOMMU (though might be unused depending on the
system-specific IP core configuration), GIC, CPC, virtualisation module,
eJTAG and PDtrace.
As being MIPS32 Release 5 based core it provides all the features
available by the CPU_MIPS32_R5 config, while adding a few more like
UCA attribute support, availability of CPU-freq (by means of L2/CM
clock ratio setting), EI/VI GIC modes detection at runtime.
In addition to this if P5600 architecture is enabled modern GNU GCC
provides a specific tuning for P5600 processors with respect to the
classic MIPS32 Release 5. First of all branch-likely avoidance is
activated only when the code is compiled with the speed optimization
(avoidance is always enabled for the pure MIPS32 Release 5
architecture). Secondly the madd/msub avoidance is enabled since
madd/msub utilization isn't profitable due to overhead of getting the
result out of the HI/LO registers. Multiply-accumulate instructions are
activated and utilized together with the necessary code reorder when
multiply-add/multiply-subtract statements are met. Finally load/store
bonding is activated by default. All of these optimizations may make
the code relatively faster than if just MIP32 release 5 architecture
was requested.
Co-developed-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-05-21 14:07:15 +00:00
|
|
|
CPU_P5600 || CAVIUM_OCTEON_SOC
|
2016-03-31 09:05:39 +00:00
|
|
|
help
|
|
|
|
This builds a kernel image that retains relocation information
|
|
|
|
so it can be loaded someplace besides the default 1MB.
|
|
|
|
The relocations make the kernel binary about 15% larger,
|
|
|
|
but are discarded at runtime
|
|
|
|
|
2016-03-31 09:05:34 +00:00
|
|
|
config RELOCATION_TABLE_SIZE
|
|
|
|
hex "Relocation table size"
|
|
|
|
depends on RELOCATABLE
|
|
|
|
range 0x0 0x01000000
|
|
|
|
default "0x00100000"
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2016-03-31 09:05:34 +00:00
|
|
|
A table of relocation data will be appended to the kernel binary
|
|
|
|
and parsed at boot to fix up the relocated kernel.
|
|
|
|
|
|
|
|
This option allows the amount of space reserved for the table to be
|
|
|
|
adjusted, although the default of 1Mb should be ok in most cases.
|
|
|
|
|
|
|
|
The build will fail and a valid size suggested if this is too small.
|
|
|
|
|
|
|
|
If unsure, leave at the default value.
|
|
|
|
|
2016-03-31 09:05:41 +00:00
|
|
|
config RANDOMIZE_BASE
|
|
|
|
bool "Randomize the address of the kernel image"
|
|
|
|
depends on RELOCATABLE
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2019-03-11 15:54:27 +00:00
|
|
|
Randomizes the physical and virtual address at which the
|
|
|
|
kernel image is loaded, as a security feature that
|
|
|
|
deters exploit attempts relying on knowledge of the location
|
|
|
|
of kernel internals.
|
2016-03-31 09:05:41 +00:00
|
|
|
|
2019-03-11 15:54:27 +00:00
|
|
|
Entropy is generated using any coprocessor 0 registers available.
|
2016-03-31 09:05:41 +00:00
|
|
|
|
2019-03-11 15:54:27 +00:00
|
|
|
The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
|
2016-03-31 09:05:41 +00:00
|
|
|
|
2019-03-11 15:54:27 +00:00
|
|
|
If unsure, say N.
|
2016-03-31 09:05:41 +00:00
|
|
|
|
|
|
|
config RANDOMIZE_BASE_MAX_OFFSET
|
|
|
|
hex "Maximum kASLR offset" if EXPERT
|
|
|
|
depends on RANDOMIZE_BASE
|
|
|
|
range 0x0 0x40000000 if EVA || 64BIT
|
|
|
|
range 0x0 0x08000000
|
|
|
|
default "0x01000000"
|
2020-06-13 16:50:22 +00:00
|
|
|
help
|
2016-03-31 09:05:41 +00:00
|
|
|
When kASLR is active, this provides the maximum offset that will
|
|
|
|
be applied to the kernel image. It should be set according to the
|
|
|
|
amount of physical RAM available in the target system minus
|
|
|
|
PHYSICAL_START and must be a power of 2.
|
|
|
|
|
|
|
|
This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
|
|
|
|
EVA or 64-bit. The default is 16Mb.
|
|
|
|
|
2006-04-11 05:53:53 +00:00
|
|
|
config NODES_SHIFT
|
|
|
|
int
|
|
|
|
default "6"
|
|
|
|
depends on NEED_MULTIPLE_NODES
|
|
|
|
|
2010-10-12 11:37:22 +00:00
|
|
|
config HW_PERF_EVENTS
|
|
|
|
bool "Enable hardware performance counter support for perf events"
|
2019-10-20 14:43:13 +00:00
|
|
|
depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON64)
|
2010-10-12 11:37:22 +00:00
|
|
|
default y
|
|
|
|
help
|
|
|
|
Enable hardware performance counter support for perf events. If
|
|
|
|
disabled, perf events will use software events only.
|
|
|
|
|
2020-02-05 04:08:33 +00:00
|
|
|
config DMI
|
|
|
|
bool "Enable DMI scanning"
|
|
|
|
depends on MACH_LOONGSON64
|
|
|
|
select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
|
|
|
|
default y
|
|
|
|
help
|
|
|
|
Enabled scanning of DMI to identify machine quirks. Say Y
|
|
|
|
here unless you have verified that your setup is not
|
|
|
|
affected by entries in the DMI blacklist. Required by PNP
|
|
|
|
BIOS code.
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config SMP
|
|
|
|
bool "Multi-Processing support"
|
2006-06-04 10:51:46 +00:00
|
|
|
depends on SYS_SUPPORTS_SMP
|
|
|
|
help
|
2005-04-16 22:20:36 +00:00
|
|
|
This enables support for systems with more than one CPU. If you have
|
2014-01-23 23:55:29 +00:00
|
|
|
a system with only one CPU, say N. If you have a system with more
|
|
|
|
than one CPU, say Y.
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2014-01-23 23:55:29 +00:00
|
|
|
If you say N here, the kernel will run on uni- and multiprocessor
|
2005-04-16 22:20:36 +00:00
|
|
|
machines, but will use only one CPU of a multiprocessor machine. If
|
|
|
|
you say Y here, the kernel will run on many, but not all,
|
2014-01-23 23:55:29 +00:00
|
|
|
uniprocessor machines. On a uniprocessor machine, the kernel
|
2005-04-16 22:20:36 +00:00
|
|
|
will run faster if you say N here.
|
|
|
|
|
|
|
|
People using multiprocessor machines who say Y here should also say
|
|
|
|
Y to "Enhanced Real Time Clock Support", below.
|
|
|
|
|
2008-02-03 13:50:21 +00:00
|
|
|
See also the SMP-HOWTO available at
|
2020-07-14 19:12:26 +00:00
|
|
|
<https://www.tldp.org/docs.html#howto>.
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
If you don't know what to do here, say N.
|
|
|
|
|
2016-07-07 07:50:40 +00:00
|
|
|
config HOTPLUG_CPU
|
|
|
|
bool "Support for hot-pluggable CPUs"
|
|
|
|
depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
|
|
|
|
help
|
|
|
|
Say Y here to allow turning CPUs off and on. CPUs can be
|
|
|
|
controlled through /sys/devices/system/cpu.
|
|
|
|
(Note: power management support will enable this option
|
|
|
|
automatically on SMP systems. )
|
|
|
|
Say N if you want to disable CPU hotplug.
|
|
|
|
|
2007-11-19 12:23:51 +00:00
|
|
|
config SMP_UP
|
|
|
|
bool
|
|
|
|
|
2008-10-03 23:06:29 +00:00
|
|
|
config SYS_SUPPORTS_MIPS_CMP
|
|
|
|
bool
|
|
|
|
|
2014-01-15 10:31:53 +00:00
|
|
|
config SYS_SUPPORTS_MIPS_CPS
|
|
|
|
bool
|
|
|
|
|
2006-06-04 10:51:46 +00:00
|
|
|
config SYS_SUPPORTS_SMP
|
|
|
|
bool
|
|
|
|
|
2007-02-06 16:53:15 +00:00
|
|
|
config NR_CPUS_DEFAULT_4
|
|
|
|
bool
|
|
|
|
|
|
|
|
config NR_CPUS_DEFAULT_8
|
|
|
|
bool
|
|
|
|
|
|
|
|
config NR_CPUS_DEFAULT_16
|
|
|
|
bool
|
|
|
|
|
|
|
|
config NR_CPUS_DEFAULT_32
|
|
|
|
bool
|
|
|
|
|
|
|
|
config NR_CPUS_DEFAULT_64
|
|
|
|
bool
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config NR_CPUS
|
2014-04-29 14:37:40 +00:00
|
|
|
int "Maximum number of CPUs (2-256)"
|
|
|
|
range 2 256
|
2005-04-16 22:20:36 +00:00
|
|
|
depends on SMP
|
2007-02-06 16:53:15 +00:00
|
|
|
default "4" if NR_CPUS_DEFAULT_4
|
|
|
|
default "8" if NR_CPUS_DEFAULT_8
|
|
|
|
default "16" if NR_CPUS_DEFAULT_16
|
|
|
|
default "32" if NR_CPUS_DEFAULT_32
|
|
|
|
default "64" if NR_CPUS_DEFAULT_64
|
2005-04-16 22:20:36 +00:00
|
|
|
help
|
|
|
|
This allows you to specify the maximum number of CPUs which this
|
|
|
|
kernel will support. The maximum supported value is 32 for 32-bit
|
|
|
|
kernel and 64 for 64-bit kernels; the minimum value which makes
|
2007-03-17 16:01:39 +00:00
|
|
|
sense is 1 for Qemu (useful only for kernel debugging purposes)
|
|
|
|
and 2 for all others.
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
This is purely to save memory - each supported CPU adds
|
2007-03-17 16:01:39 +00:00
|
|
|
approximately eight kilobytes to the kernel image. For best
|
|
|
|
performance should round up your number of processors to the next
|
|
|
|
power of two.
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2012-07-13 20:44:53 +00:00
|
|
|
config MIPS_PERF_SHARED_TC_COUNTERS
|
|
|
|
bool
|
2017-09-28 17:34:04 +00:00
|
|
|
|
|
|
|
config MIPS_NR_CPU_NR_MAP_1024
|
|
|
|
bool
|
|
|
|
|
|
|
|
config MIPS_NR_CPU_NR_MAP
|
|
|
|
int
|
|
|
|
depends on SMP
|
|
|
|
default 1024 if MIPS_NR_CPU_NR_MAP_1024
|
|
|
|
default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
|
2012-07-13 20:44:53 +00:00
|
|
|
|
2006-06-19 15:19:13 +00:00
|
|
|
#
|
|
|
|
# Timer Interrupt Frequency Configuration
|
|
|
|
#
|
|
|
|
|
|
|
|
choice
|
|
|
|
prompt "Timer frequency"
|
|
|
|
default HZ_250
|
|
|
|
help
|
2019-03-11 15:54:27 +00:00
|
|
|
Allows the configuration of the timer frequency.
|
2006-06-19 15:19:13 +00:00
|
|
|
|
2015-09-22 17:16:39 +00:00
|
|
|
config HZ_24
|
|
|
|
bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
|
|
|
|
|
2006-06-19 15:19:13 +00:00
|
|
|
config HZ_48
|
2008-02-25 16:55:29 +00:00
|
|
|
bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
|
2006-06-19 15:19:13 +00:00
|
|
|
|
|
|
|
config HZ_100
|
|
|
|
bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
|
|
|
|
|
|
|
|
config HZ_128
|
|
|
|
bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
|
|
|
|
|
|
|
|
config HZ_250
|
|
|
|
bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
|
|
|
|
|
|
|
|
config HZ_256
|
|
|
|
bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
|
|
|
|
|
|
|
|
config HZ_1000
|
|
|
|
bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
|
|
|
|
|
|
|
|
config HZ_1024
|
|
|
|
bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
|
|
|
|
|
|
|
|
endchoice
|
|
|
|
|
2015-09-22 17:16:39 +00:00
|
|
|
config SYS_SUPPORTS_24HZ
|
|
|
|
bool
|
|
|
|
|
2006-06-19 15:19:13 +00:00
|
|
|
config SYS_SUPPORTS_48HZ
|
|
|
|
bool
|
|
|
|
|
|
|
|
config SYS_SUPPORTS_100HZ
|
|
|
|
bool
|
|
|
|
|
|
|
|
config SYS_SUPPORTS_128HZ
|
|
|
|
bool
|
|
|
|
|
|
|
|
config SYS_SUPPORTS_250HZ
|
|
|
|
bool
|
|
|
|
|
|
|
|
config SYS_SUPPORTS_256HZ
|
|
|
|
bool
|
|
|
|
|
|
|
|
config SYS_SUPPORTS_1000HZ
|
|
|
|
bool
|
|
|
|
|
|
|
|
config SYS_SUPPORTS_1024HZ
|
|
|
|
bool
|
|
|
|
|
|
|
|
config SYS_SUPPORTS_ARBIT_HZ
|
|
|
|
bool
|
2015-09-22 17:16:39 +00:00
|
|
|
default y if !SYS_SUPPORTS_24HZ && \
|
|
|
|
!SYS_SUPPORTS_48HZ && \
|
|
|
|
!SYS_SUPPORTS_100HZ && \
|
|
|
|
!SYS_SUPPORTS_128HZ && \
|
|
|
|
!SYS_SUPPORTS_250HZ && \
|
|
|
|
!SYS_SUPPORTS_256HZ && \
|
|
|
|
!SYS_SUPPORTS_1000HZ && \
|
2006-06-19 15:19:13 +00:00
|
|
|
!SYS_SUPPORTS_1024HZ
|
|
|
|
|
|
|
|
config HZ
|
|
|
|
int
|
2015-09-22 17:16:39 +00:00
|
|
|
default 24 if HZ_24
|
2006-06-19 15:19:13 +00:00
|
|
|
default 48 if HZ_48
|
|
|
|
default 100 if HZ_100
|
|
|
|
default 128 if HZ_128
|
|
|
|
default 250 if HZ_250
|
|
|
|
default 256 if HZ_256
|
|
|
|
default 1000 if HZ_1000
|
|
|
|
default 1024 if HZ_1024
|
|
|
|
|
2015-03-07 18:30:19 +00:00
|
|
|
config SCHED_HRTICK
|
|
|
|
def_bool HIGH_RES_TIMERS
|
|
|
|
|
2007-01-16 14:29:11 +00:00
|
|
|
config KEXEC
|
2013-01-17 02:53:19 +00:00
|
|
|
bool "Kexec system call"
|
2015-09-09 22:38:55 +00:00
|
|
|
select KEXEC_CORE
|
2007-01-16 14:29:11 +00:00
|
|
|
help
|
|
|
|
kexec is a system call that implements the ability to shutdown your
|
|
|
|
current kernel, and to start another kernel. It is like a reboot
|
2007-05-09 05:12:20 +00:00
|
|
|
but it is independent of the system firmware. And like a reboot
|
2007-01-16 14:29:11 +00:00
|
|
|
you can start any kernel with it, not just Linux.
|
|
|
|
|
2007-10-19 23:34:40 +00:00
|
|
|
The name comes from the similarity to the exec system call.
|
2007-01-16 14:29:11 +00:00
|
|
|
|
|
|
|
It is an ongoing process to be certain the hardware in a machine
|
|
|
|
is properly shutdown, so do not be surprised if this code does not
|
2013-08-20 19:38:03 +00:00
|
|
|
initially work for you. As of this writing the exact hardware
|
|
|
|
interface is strongly in flux, so no good recommendation can be
|
|
|
|
made.
|
2007-01-16 14:29:11 +00:00
|
|
|
|
2012-10-11 16:14:58 +00:00
|
|
|
config CRASH_DUMP
|
2016-12-02 08:58:29 +00:00
|
|
|
bool "Kernel crash dumps"
|
|
|
|
help
|
2012-10-11 16:14:58 +00:00
|
|
|
Generate crash dump after being started by kexec.
|
|
|
|
This should be normally only set in special crash dump kernels
|
|
|
|
which are loaded in the main kernel with kexec-tools into
|
|
|
|
a specially reserved region and then later executed after
|
|
|
|
a crash by kdump/kexec. The crash dump kernel must be compiled
|
|
|
|
to a memory address not used by the main kernel or firmware using
|
|
|
|
PHYSICAL_START.
|
|
|
|
|
|
|
|
config PHYSICAL_START
|
2016-12-02 08:58:29 +00:00
|
|
|
hex "Physical address where the kernel is loaded"
|
2018-03-26 18:11:51 +00:00
|
|
|
default "0xffffffff84000000"
|
2016-12-02 08:58:29 +00:00
|
|
|
depends on CRASH_DUMP
|
|
|
|
help
|
2012-10-11 16:14:58 +00:00
|
|
|
This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
|
|
|
|
If you plan to use kernel for capturing the crash dump change
|
|
|
|
this value to start of the reserved region (the "X" value as
|
|
|
|
specified in the "crashkernel=YM@XM" command line boot parameter
|
|
|
|
passed to the panic-ed kernel).
|
|
|
|
|
2007-01-16 14:29:11 +00:00
|
|
|
config SECCOMP
|
|
|
|
bool "Enable seccomp to safely compute untrusted bytecode"
|
2007-07-25 15:19:33 +00:00
|
|
|
depends on PROC_FS
|
2007-01-16 14:29:11 +00:00
|
|
|
default y
|
|
|
|
help
|
|
|
|
This kernel feature is useful for number crunching applications
|
|
|
|
that may need to compute untrusted bytecode during their
|
|
|
|
execution. By using pipes or other transports made available to
|
|
|
|
the process as file descriptors supporting the read/write
|
|
|
|
syscalls, it's possible to isolate those applications in
|
|
|
|
their own address space using seccomp. Once seccomp is
|
|
|
|
enabled via /proc/<pid>/seccomp, it cannot be disabled
|
|
|
|
and the task is only allowed to execute a few safe syscalls
|
|
|
|
defined by each seccomp mode.
|
|
|
|
|
|
|
|
If unsure, say Y. Only embedded should say N here.
|
|
|
|
|
2013-11-22 13:12:07 +00:00
|
|
|
config MIPS_O32_FP64_SUPPORT
|
2018-11-07 23:13:58 +00:00
|
|
|
bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
|
2013-11-22 13:12:07 +00:00
|
|
|
depends on 32BIT || MIPS32_O32
|
|
|
|
help
|
|
|
|
When this is enabled, the kernel will support use of 64-bit floating
|
|
|
|
point registers with binaries using the O32 ABI along with the
|
|
|
|
EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
|
|
|
|
32-bit MIPS systems this support is at the cost of increasing the
|
|
|
|
size and complexity of the compiled FPU emulator. Thus if you are
|
|
|
|
running a MIPS32 system and know that none of your userland binaries
|
|
|
|
will require 64-bit floating point, you may wish to reduce the size
|
|
|
|
of your kernel & potentially improve FP emulation performance by
|
|
|
|
saying N here.
|
|
|
|
|
2014-02-14 17:55:18 +00:00
|
|
|
Although binutils currently supports use of this flag the details
|
|
|
|
concerning its effect upon the O32 ABI in userland are still being
|
|
|
|
worked on. In order to avoid userland becoming dependant upon current
|
|
|
|
behaviour before the details have been finalised, this option should
|
|
|
|
be considered experimental and only enabled by those working upon
|
|
|
|
said details.
|
|
|
|
|
|
|
|
If unsure, say N.
|
2013-11-22 13:12:07 +00:00
|
|
|
|
2010-10-13 06:52:46 +00:00
|
|
|
config USE_OF
|
2012-09-18 09:28:54 +00:00
|
|
|
bool
|
2010-10-13 06:52:46 +00:00
|
|
|
select OF
|
2010-11-18 23:54:56 +00:00
|
|
|
select OF_EARLY_FLATTREE
|
2012-02-24 15:07:06 +00:00
|
|
|
select IRQ_DOMAIN
|
2010-10-13 06:52:46 +00:00
|
|
|
|
2018-09-11 21:49:24 +00:00
|
|
|
config UHI_BOOT
|
|
|
|
bool
|
|
|
|
|
2014-08-21 20:04:20 +00:00
|
|
|
config BUILTIN_DTB
|
|
|
|
bool
|
|
|
|
|
2015-04-12 10:24:58 +00:00
|
|
|
choice
|
2015-10-12 11:13:01 +00:00
|
|
|
prompt "Kernel appended dtb support" if USE_OF
|
2015-04-12 10:24:58 +00:00
|
|
|
default MIPS_NO_APPENDED_DTB
|
|
|
|
|
|
|
|
config MIPS_NO_APPENDED_DTB
|
|
|
|
bool "None"
|
|
|
|
help
|
|
|
|
Do not enable appended dtb support.
|
|
|
|
|
2015-09-11 14:46:14 +00:00
|
|
|
config MIPS_ELF_APPENDED_DTB
|
|
|
|
bool "vmlinux"
|
|
|
|
help
|
|
|
|
With this option, the boot code will look for a device tree binary
|
|
|
|
DTB) included in the vmlinux ELF section .appended_dtb. By default
|
|
|
|
it is empty and the DTB can be appended using binutils command
|
|
|
|
objcopy:
|
|
|
|
|
|
|
|
objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
|
|
|
|
|
|
|
|
This is meant as a backward compatiblity convenience for those
|
|
|
|
systems with a bootloader that can't be upgraded to accommodate
|
|
|
|
the documented boot protocol using a device tree.
|
|
|
|
|
2015-04-12 10:24:58 +00:00
|
|
|
config MIPS_RAW_APPENDED_DTB
|
2016-06-20 09:27:36 +00:00
|
|
|
bool "vmlinux.bin or vmlinuz.bin"
|
2015-04-12 10:24:58 +00:00
|
|
|
help
|
|
|
|
With this option, the boot code will look for a device tree binary
|
2016-06-20 09:27:36 +00:00
|
|
|
DTB) appended to raw vmlinux.bin or vmlinuz.bin.
|
2015-04-12 10:24:58 +00:00
|
|
|
(e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
|
|
|
|
|
|
|
|
This is meant as a backward compatibility convenience for those
|
|
|
|
systems with a bootloader that can't be upgraded to accommodate
|
|
|
|
the documented boot protocol using a device tree.
|
|
|
|
|
|
|
|
Beware that there is very little in terms of protection against
|
|
|
|
this option being confused by leftover garbage in memory that might
|
|
|
|
look like a DTB header after a reboot if no actual DTB is appended
|
|
|
|
to vmlinux.bin. Do not leave this option active in a production kernel
|
|
|
|
if you don't intend to always append a DTB.
|
|
|
|
endchoice
|
|
|
|
|
2015-10-12 11:13:02 +00:00
|
|
|
choice
|
|
|
|
prompt "Kernel command line type" if !CMDLINE_OVERRIDE
|
2015-10-12 11:13:03 +00:00
|
|
|
default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
|
2020-03-25 03:55:02 +00:00
|
|
|
!MACH_LOONGSON64 && !MIPS_MALTA && \
|
2015-10-12 11:13:03 +00:00
|
|
|
!CAVIUM_OCTEON_SOC
|
2015-10-12 11:13:02 +00:00
|
|
|
default MIPS_CMDLINE_FROM_BOOTLOADER
|
|
|
|
|
|
|
|
config MIPS_CMDLINE_FROM_DTB
|
|
|
|
depends on USE_OF
|
|
|
|
bool "Dtb kernel arguments if available"
|
|
|
|
|
|
|
|
config MIPS_CMDLINE_DTB_EXTEND
|
|
|
|
depends on USE_OF
|
|
|
|
bool "Extend dtb kernel arguments with bootloader arguments"
|
|
|
|
|
|
|
|
config MIPS_CMDLINE_FROM_BOOTLOADER
|
|
|
|
bool "Bootloader kernel arguments if available"
|
2016-04-28 09:03:09 +00:00
|
|
|
|
|
|
|
config MIPS_CMDLINE_BUILTIN_EXTEND
|
|
|
|
depends on CMDLINE_BOOL
|
|
|
|
bool "Extend builtin kernel arguments with bootloader arguments"
|
2015-10-12 11:13:02 +00:00
|
|
|
endchoice
|
|
|
|
|
2005-10-29 18:32:41 +00:00
|
|
|
endmenu
|
|
|
|
|
2006-09-26 14:44:01 +00:00
|
|
|
config LOCKDEP_SUPPORT
|
|
|
|
bool
|
|
|
|
default y
|
|
|
|
|
|
|
|
config STACKTRACE_SUPPORT
|
|
|
|
bool
|
|
|
|
default y
|
|
|
|
|
2015-04-14 22:45:51 +00:00
|
|
|
config PGTABLE_LEVELS
|
|
|
|
int
|
2017-02-17 01:27:34 +00:00
|
|
|
default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
|
2015-04-14 22:45:51 +00:00
|
|
|
default 3 if 64BIT && !PAGE_SIZE_64KB
|
|
|
|
default 2
|
|
|
|
|
2018-07-28 01:23:20 +00:00
|
|
|
config MIPS_AUTO_PFN_OFFSET
|
|
|
|
bool
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
|
|
|
|
|
2016-10-05 17:18:12 +00:00
|
|
|
config PCI_DRIVERS_GENERIC
|
2018-11-15 19:05:33 +00:00
|
|
|
select PCI_DOMAINS_GENERIC if PCI
|
2016-10-05 17:18:12 +00:00
|
|
|
bool
|
|
|
|
|
|
|
|
config PCI_DRIVERS_LEGACY
|
|
|
|
def_bool !PCI_DRIVERS_GENERIC
|
|
|
|
select NO_GENERIC_PCI_IOPORT_MAP
|
2018-11-15 19:05:33 +00:00
|
|
|
select PCI_DOMAINS if PCI
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
#
|
|
|
|
# ISA support is now enabled via select. Too many systems still have the one
|
|
|
|
# or other ISA chip on the board that users don't know about so don't expect
|
|
|
|
# users to choose the right thing ...
|
|
|
|
#
|
|
|
|
config ISA
|
|
|
|
bool
|
|
|
|
|
|
|
|
config TC
|
|
|
|
bool "TURBOchannel support"
|
|
|
|
depends on MACH_DECSTATION
|
|
|
|
help
|
2010-10-16 17:36:23 +00:00
|
|
|
TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
|
|
|
|
processors. TURBOchannel programming specifications are available
|
|
|
|
at:
|
|
|
|
<ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
|
|
|
|
and:
|
|
|
|
<http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
|
|
|
|
Linux driver support status is documented at:
|
|
|
|
<http://www.linux-mips.org/wiki/DECstation>
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
config MMU
|
|
|
|
bool
|
|
|
|
default y
|
|
|
|
|
2016-11-24 17:32:45 +00:00
|
|
|
config ARCH_MMAP_RND_BITS_MIN
|
|
|
|
default 12 if 64BIT
|
|
|
|
default 8
|
|
|
|
|
|
|
|
config ARCH_MMAP_RND_BITS_MAX
|
|
|
|
default 18 if 64BIT
|
|
|
|
default 15
|
|
|
|
|
|
|
|
config ARCH_MMAP_RND_COMPAT_BITS_MIN
|
2019-03-11 15:54:27 +00:00
|
|
|
default 8
|
2016-11-24 17:32:45 +00:00
|
|
|
|
|
|
|
config ARCH_MMAP_RND_COMPAT_BITS_MAX
|
2019-03-11 15:54:27 +00:00
|
|
|
default 15
|
2016-11-24 17:32:45 +00:00
|
|
|
|
2007-10-11 22:46:10 +00:00
|
|
|
config I8253
|
|
|
|
bool
|
2011-05-08 18:03:03 +00:00
|
|
|
select CLKSRC_I8253
|
2011-06-09 13:08:27 +00:00
|
|
|
select CLKEVT_I8253
|
2009-11-16 17:32:58 +00:00
|
|
|
select MIPS_EXTERNAL_TIMER
|
2007-10-11 22:46:10 +00:00
|
|
|
|
2013-06-12 08:54:11 +00:00
|
|
|
config ZONE_DMA
|
|
|
|
bool
|
|
|
|
|
2007-11-03 02:05:43 +00:00
|
|
|
config ZONE_DMA32
|
|
|
|
bool
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
endmenu
|
|
|
|
|
|
|
|
config TRAD_SIGNALS
|
|
|
|
bool
|
|
|
|
|
|
|
|
config MIPS32_COMPAT
|
MIPS: Compat: Fix build error if CONFIG_MIPS32_COMPAT but no compat ABI.
In that case nor __NR_seccomp_*_32 symbols will be defined in
<asm/unistd.h> so the attempt to use it in kernel.seccomp.c will fail
with:
kernel/seccomp.c:565:2: error: '__NR_seccomp_read_32' undeclared here (not in a function)
__NR_seccomp_read_32, __NR_seccomp_write_32, __NR_seccomp_exit_32, __NR_seccomp_sigreturn_32,
^
kernel/seccomp.c:565:24: error: '__NR_seccomp_write_32' undeclared here (not in a function)
__NR_seccomp_read_32, __NR_seccomp_write_32, __NR_seccomp_exit_32, __NR_seccomp_sigreturn_32,
^
kernel/seccomp.c:565:47: error: '__NR_seccomp_exit_32' undeclared here (not in a function)
__NR_seccomp_read_32, __NR_seccomp_write_32, __NR_seccomp_exit_32, __NR_seccomp_sigreturn_32,
^
kernel/seccomp.c:565:69: error: '__NR_seccomp_sigreturn_32' undeclared here (not in a function)
__NR_seccomp_read_32, __NR_seccomp_write_32, __NR_seccomp_exit_32, __NR_seccomp_sigreturn_32,
Solved by changing the compat ABIs in kconfig to select MIPS32_COMPAT
directly. This also means the user no longer has to select MIPS32_COMPAT
before being able to see the ABI options.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-12-19 00:18:03 +00:00
|
|
|
bool
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
config COMPAT
|
|
|
|
bool
|
|
|
|
|
2006-11-07 09:02:44 +00:00
|
|
|
config SYSVIPC_COMPAT
|
|
|
|
bool
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
config MIPS32_O32
|
|
|
|
bool "Kernel support for o32 binaries"
|
MIPS: Compat: Fix build error if CONFIG_MIPS32_COMPAT but no compat ABI.
In that case nor __NR_seccomp_*_32 symbols will be defined in
<asm/unistd.h> so the attempt to use it in kernel.seccomp.c will fail
with:
kernel/seccomp.c:565:2: error: '__NR_seccomp_read_32' undeclared here (not in a function)
__NR_seccomp_read_32, __NR_seccomp_write_32, __NR_seccomp_exit_32, __NR_seccomp_sigreturn_32,
^
kernel/seccomp.c:565:24: error: '__NR_seccomp_write_32' undeclared here (not in a function)
__NR_seccomp_read_32, __NR_seccomp_write_32, __NR_seccomp_exit_32, __NR_seccomp_sigreturn_32,
^
kernel/seccomp.c:565:47: error: '__NR_seccomp_exit_32' undeclared here (not in a function)
__NR_seccomp_read_32, __NR_seccomp_write_32, __NR_seccomp_exit_32, __NR_seccomp_sigreturn_32,
^
kernel/seccomp.c:565:69: error: '__NR_seccomp_sigreturn_32' undeclared here (not in a function)
__NR_seccomp_read_32, __NR_seccomp_write_32, __NR_seccomp_exit_32, __NR_seccomp_sigreturn_32,
Solved by changing the compat ABIs in kconfig to select MIPS32_COMPAT
directly. This also means the user no longer has to select MIPS32_COMPAT
before being able to see the ABI options.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-12-19 00:18:03 +00:00
|
|
|
depends on 64BIT
|
|
|
|
select ARCH_WANT_OLD_COMPAT_IPC
|
|
|
|
select COMPAT
|
|
|
|
select MIPS32_COMPAT
|
|
|
|
select SYSVIPC_COMPAT if SYSVIPC
|
2005-04-16 22:20:36 +00:00
|
|
|
help
|
|
|
|
Select this option if you want to run o32 binaries. These are pure
|
|
|
|
32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
|
|
|
|
existing binaries are in this format.
|
|
|
|
|
|
|
|
If unsure, say Y.
|
|
|
|
|
|
|
|
config MIPS32_N32
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|
|
|
bool "Kernel support for n32 binaries"
|
2015-01-03 11:10:23 +00:00
|
|
|
depends on 64BIT
|
2019-01-10 16:24:31 +00:00
|
|
|
select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
|
MIPS: Compat: Fix build error if CONFIG_MIPS32_COMPAT but no compat ABI.
In that case nor __NR_seccomp_*_32 symbols will be defined in
<asm/unistd.h> so the attempt to use it in kernel.seccomp.c will fail
with:
kernel/seccomp.c:565:2: error: '__NR_seccomp_read_32' undeclared here (not in a function)
__NR_seccomp_read_32, __NR_seccomp_write_32, __NR_seccomp_exit_32, __NR_seccomp_sigreturn_32,
^
kernel/seccomp.c:565:24: error: '__NR_seccomp_write_32' undeclared here (not in a function)
__NR_seccomp_read_32, __NR_seccomp_write_32, __NR_seccomp_exit_32, __NR_seccomp_sigreturn_32,
^
kernel/seccomp.c:565:47: error: '__NR_seccomp_exit_32' undeclared here (not in a function)
__NR_seccomp_read_32, __NR_seccomp_write_32, __NR_seccomp_exit_32, __NR_seccomp_sigreturn_32,
^
kernel/seccomp.c:565:69: error: '__NR_seccomp_sigreturn_32' undeclared here (not in a function)
__NR_seccomp_read_32, __NR_seccomp_write_32, __NR_seccomp_exit_32, __NR_seccomp_sigreturn_32,
Solved by changing the compat ABIs in kconfig to select MIPS32_COMPAT
directly. This also means the user no longer has to select MIPS32_COMPAT
before being able to see the ABI options.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-12-19 00:18:03 +00:00
|
|
|
select COMPAT
|
|
|
|
select MIPS32_COMPAT
|
|
|
|
select SYSVIPC_COMPAT if SYSVIPC
|
2005-04-16 22:20:36 +00:00
|
|
|
help
|
|
|
|
Select this option if you want to run n32 binaries. These are
|
|
|
|
64-bit binaries using 32-bit quantities for addressing and certain
|
|
|
|
data that would normally be 64-bit. They are used in special
|
|
|
|
cases.
|
|
|
|
|
|
|
|
If unsure, say N.
|
|
|
|
|
|
|
|
config BINFMT_ELF32
|
|
|
|
bool
|
|
|
|
default y if MIPS32_O32 || MIPS32_N32
|
2016-05-23 23:22:26 +00:00
|
|
|
select ELFCORE
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-02-09 17:08:58 +00:00
|
|
|
menu "Power management options"
|
|
|
|
|
2009-06-04 12:27:10 +00:00
|
|
|
config ARCH_HIBERNATION_POSSIBLE
|
|
|
|
def_bool y
|
2009-07-02 10:48:07 +00:00
|
|
|
depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
|
2009-06-04 12:27:10 +00:00
|
|
|
|
2007-12-08 01:14:00 +00:00
|
|
|
config ARCH_SUSPEND_POSSIBLE
|
|
|
|
def_bool y
|
2009-07-02 10:48:07 +00:00
|
|
|
depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
|
2007-12-08 01:14:00 +00:00
|
|
|
|
2007-02-09 17:08:58 +00:00
|
|
|
source "kernel/power/Kconfig"
|
2006-06-05 15:43:10 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
endmenu
|
|
|
|
|
2013-04-04 12:54:21 +00:00
|
|
|
config MIPS_EXTERNAL_TIMER
|
|
|
|
bool
|
|
|
|
|
|
|
|
menu "CPU Power Management"
|
2014-04-14 15:24:22 +00:00
|
|
|
|
|
|
|
if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
|
2013-04-04 12:54:21 +00:00
|
|
|
source "drivers/cpufreq/Kconfig"
|
|
|
|
endif
|
2009-11-16 17:32:58 +00:00
|
|
|
|
2014-04-14 15:24:22 +00:00
|
|
|
source "drivers/cpuidle/Kconfig"
|
|
|
|
|
|
|
|
endmenu
|
|
|
|
|
2012-11-15 09:35:42 +00:00
|
|
|
source "drivers/firmware/Kconfig"
|
|
|
|
|
2012-11-22 02:33:59 +00:00
|
|
|
source "arch/mips/kvm/Kconfig"
|
2020-04-28 22:14:16 +00:00
|
|
|
|
|
|
|
source "arch/mips/vdso/Kconfig"
|