forked from Minki/linux
c9b484b5c1
Signed-off-by: Xianghua Xiao <x.xiao@freescale.com> Signed-off-by: Jon Loeliger <jdl@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
1043 lines
26 KiB
Plaintext
1043 lines
26 KiB
Plaintext
# For a description of the syntax of this configuration file,
|
|
# see Documentation/kbuild/kconfig-language.txt.
|
|
#
|
|
|
|
mainmenu "Linux/PowerPC Kernel Configuration"
|
|
|
|
config PPC64
|
|
bool "64-bit kernel"
|
|
default n
|
|
help
|
|
This option selects whether a 32-bit or a 64-bit kernel
|
|
will be built.
|
|
|
|
config PPC32
|
|
bool
|
|
default y if !PPC64
|
|
|
|
config 64BIT
|
|
bool
|
|
default y if PPC64
|
|
|
|
config PPC_MERGE
|
|
def_bool y
|
|
|
|
config MMU
|
|
bool
|
|
default y
|
|
|
|
config GENERIC_HARDIRQS
|
|
bool
|
|
default y
|
|
|
|
config RWSEM_GENERIC_SPINLOCK
|
|
bool
|
|
|
|
config RWSEM_XCHGADD_ALGORITHM
|
|
bool
|
|
default y
|
|
|
|
config GENERIC_HWEIGHT
|
|
bool
|
|
default y
|
|
|
|
config GENERIC_CALIBRATE_DELAY
|
|
bool
|
|
default y
|
|
|
|
config GENERIC_FIND_NEXT_BIT
|
|
bool
|
|
default y
|
|
|
|
config PPC
|
|
bool
|
|
default y
|
|
|
|
config EARLY_PRINTK
|
|
bool
|
|
default y
|
|
|
|
config COMPAT
|
|
bool
|
|
default y if PPC64
|
|
|
|
config SYSVIPC_COMPAT
|
|
bool
|
|
depends on COMPAT && SYSVIPC
|
|
default y
|
|
|
|
# All PPC32s use generic nvram driver through ppc_md
|
|
config GENERIC_NVRAM
|
|
bool
|
|
default y if PPC32
|
|
|
|
config SCHED_NO_NO_OMIT_FRAME_POINTER
|
|
bool
|
|
default y
|
|
|
|
config ARCH_MAY_HAVE_PC_FDC
|
|
bool
|
|
default y
|
|
|
|
config PPC_OF
|
|
def_bool y
|
|
|
|
config PPC_UDBG_16550
|
|
bool
|
|
default n
|
|
|
|
config GENERIC_TBSYNC
|
|
bool
|
|
default y if PPC32 && SMP
|
|
default n
|
|
|
|
config DEFAULT_UIMAGE
|
|
bool
|
|
help
|
|
Used to allow a board to specify it wants a uImage built by default
|
|
default n
|
|
|
|
menu "Processor support"
|
|
choice
|
|
prompt "Processor Type"
|
|
depends on PPC32
|
|
default 6xx
|
|
|
|
config CLASSIC32
|
|
bool "6xx/7xx/74xx"
|
|
select PPC_FPU
|
|
select 6xx
|
|
help
|
|
There are four families of PowerPC chips supported. The more common
|
|
types (601, 603, 604, 740, 750, 7400), the Motorola embedded
|
|
versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC
|
|
embedded versions (403 and 405) and the high end 64 bit Power
|
|
processors (POWER 3, POWER4, and IBM PPC970 also known as G5).
|
|
|
|
Unless you are building a kernel for one of the embedded processor
|
|
systems, 64 bit IBM RS/6000 or an Apple G5, choose 6xx.
|
|
Note that the kernel runs in 32-bit mode even on 64-bit chips.
|
|
|
|
config PPC_52xx
|
|
bool "Freescale 52xx"
|
|
select 6xx
|
|
select PPC_FPU
|
|
|
|
config PPC_82xx
|
|
bool "Freescale 82xx"
|
|
select 6xx
|
|
select PPC_FPU
|
|
|
|
config PPC_83xx
|
|
bool "Freescale 83xx"
|
|
select 6xx
|
|
select FSL_SOC
|
|
select 83xx
|
|
select PPC_FPU
|
|
|
|
config PPC_85xx
|
|
bool "Freescale 85xx"
|
|
select E500
|
|
select FSL_SOC
|
|
select 85xx
|
|
|
|
config PPC_86xx
|
|
bool "Freescale 86xx"
|
|
select 6xx
|
|
select FSL_SOC
|
|
select PPC_FPU
|
|
select ALTIVEC
|
|
help
|
|
The Freescale E600 SoCs have 74xx cores.
|
|
|
|
config 40x
|
|
bool "AMCC 40x"
|
|
|
|
config 44x
|
|
bool "AMCC 44x"
|
|
|
|
config 8xx
|
|
bool "Freescale 8xx"
|
|
|
|
config E200
|
|
bool "Freescale e200"
|
|
|
|
endchoice
|
|
|
|
config POWER4_ONLY
|
|
bool "Optimize for POWER4"
|
|
depends on PPC64
|
|
default n
|
|
---help---
|
|
Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
|
|
The resulting binary will not work on POWER3 or RS64 processors
|
|
when compiled with binutils 2.15 or later.
|
|
|
|
config POWER3
|
|
bool
|
|
depends on PPC64
|
|
default y if !POWER4_ONLY
|
|
|
|
config POWER4
|
|
depends on PPC64
|
|
def_bool y
|
|
|
|
config 6xx
|
|
bool
|
|
|
|
# this is temp to handle compat with arch=ppc
|
|
config 83xx
|
|
bool
|
|
|
|
# this is temp to handle compat with arch=ppc
|
|
config 85xx
|
|
bool
|
|
|
|
config E500
|
|
bool
|
|
|
|
config PPC_FPU
|
|
bool
|
|
default y if PPC64
|
|
|
|
config BOOKE
|
|
bool
|
|
depends on E200 || E500
|
|
default y
|
|
|
|
config FSL_BOOKE
|
|
bool
|
|
depends on E200 || E500
|
|
default y
|
|
|
|
config PTE_64BIT
|
|
bool
|
|
depends on 44x || E500
|
|
default y if 44x
|
|
default y if E500 && PHYS_64BIT
|
|
|
|
config PHYS_64BIT
|
|
bool 'Large physical address support' if E500
|
|
depends on 44x || E500
|
|
default y if 44x
|
|
---help---
|
|
This option enables kernel support for larger than 32-bit physical
|
|
addresses. This features is not be available on all e500 cores.
|
|
|
|
If in doubt, say N here.
|
|
|
|
config ALTIVEC
|
|
bool "AltiVec Support"
|
|
depends on CLASSIC32 || POWER4
|
|
---help---
|
|
This option enables kernel support for the Altivec extensions to the
|
|
PowerPC processor. The kernel currently supports saving and restoring
|
|
altivec registers, and turning on the 'altivec enable' bit so user
|
|
processes can execute altivec instructions.
|
|
|
|
This option is only usefully if you have a processor that supports
|
|
altivec (G4, otherwise known as 74xx series), but does not have
|
|
any affect on a non-altivec cpu (it does, however add code to the
|
|
kernel).
|
|
|
|
If in doubt, say Y here.
|
|
|
|
config SPE
|
|
bool "SPE Support"
|
|
depends on E200 || E500
|
|
default y
|
|
---help---
|
|
This option enables kernel support for the Signal Processing
|
|
Extensions (SPE) to the PowerPC processor. The kernel currently
|
|
supports saving and restoring SPE registers, and turning on the
|
|
'spe enable' bit so user processes can execute SPE instructions.
|
|
|
|
This option is only useful if you have a processor that supports
|
|
SPE (e500, otherwise known as 85xx series), but does not have any
|
|
effect on a non-spe cpu (it does, however add code to the kernel).
|
|
|
|
If in doubt, say Y here.
|
|
|
|
config PPC_STD_MMU
|
|
bool
|
|
depends on 6xx || POWER3 || POWER4 || PPC64
|
|
default y
|
|
|
|
config PPC_STD_MMU_32
|
|
def_bool y
|
|
depends on PPC_STD_MMU && PPC32
|
|
|
|
config VIRT_CPU_ACCOUNTING
|
|
bool "Deterministic task and CPU time accounting"
|
|
depends on PPC64
|
|
default y
|
|
help
|
|
Select this option to enable more accurate task and CPU time
|
|
accounting. This is done by reading a CPU counter on each
|
|
kernel entry and exit and on transitions within the kernel
|
|
between system, softirq and hardirq state, so there is a
|
|
small performance impact. This also enables accounting of
|
|
stolen time on logically-partitioned systems running on
|
|
IBM POWER5-based machines.
|
|
|
|
If in doubt, say Y here.
|
|
|
|
config SMP
|
|
depends on PPC_STD_MMU
|
|
bool "Symmetric multi-processing support"
|
|
---help---
|
|
This enables support for systems with more than one CPU. If you have
|
|
a system with only one CPU, say N. If you have a system with more
|
|
than one CPU, say Y. Note that the kernel does not currently
|
|
support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
|
|
since they have inadequate hardware support for multiprocessor
|
|
operation.
|
|
|
|
If you say N here, the kernel will run on single and multiprocessor
|
|
machines, but will use only one CPU of a multiprocessor machine. If
|
|
you say Y here, the kernel will run on single-processor machines.
|
|
On a single-processor machine, the kernel will run faster if you say
|
|
N here.
|
|
|
|
If you don't know what to do here, say N.
|
|
|
|
config NR_CPUS
|
|
int "Maximum number of CPUs (2-128)"
|
|
range 2 128
|
|
depends on SMP
|
|
default "32" if PPC64
|
|
default "4"
|
|
|
|
config NOT_COHERENT_CACHE
|
|
bool
|
|
depends on 4xx || 8xx || E200
|
|
default y
|
|
endmenu
|
|
|
|
source "init/Kconfig"
|
|
|
|
menu "Platform support"
|
|
depends on PPC64 || CLASSIC32
|
|
|
|
choice
|
|
prompt "Machine type"
|
|
default PPC_MULTIPLATFORM
|
|
|
|
config PPC_MULTIPLATFORM
|
|
bool "Generic desktop/server/laptop"
|
|
help
|
|
Select this option if configuring for an IBM pSeries or
|
|
RS/6000 machine, an Apple machine, or a PReP, CHRP,
|
|
Maple or Cell-based machine.
|
|
|
|
config PPC_ISERIES
|
|
bool "IBM Legacy iSeries"
|
|
depends on PPC64
|
|
|
|
config EMBEDDED6xx
|
|
bool "Embedded 6xx/7xx/7xxx-based board"
|
|
depends on PPC32 && BROKEN
|
|
|
|
config APUS
|
|
bool "Amiga-APUS"
|
|
depends on PPC32 && BROKEN
|
|
help
|
|
Select APUS if configuring for a PowerUP Amiga.
|
|
More information is available at:
|
|
<http://linux-apus.sourceforge.net/>.
|
|
endchoice
|
|
|
|
config PPC_PSERIES
|
|
depends on PPC_MULTIPLATFORM && PPC64
|
|
bool "IBM pSeries & new (POWER5-based) iSeries"
|
|
select PPC_I8259
|
|
select PPC_RTAS
|
|
select RTAS_ERROR_LOGGING
|
|
select PPC_UDBG_16550
|
|
default y
|
|
|
|
config PPC_CHRP
|
|
bool "Common Hardware Reference Platform (CHRP) based machines"
|
|
depends on PPC_MULTIPLATFORM && PPC32
|
|
select PPC_I8259
|
|
select PPC_INDIRECT_PCI
|
|
select PPC_RTAS
|
|
select PPC_MPC106
|
|
select PPC_UDBG_16550
|
|
default y
|
|
|
|
config PPC_PMAC
|
|
bool "Apple PowerMac based machines"
|
|
depends on PPC_MULTIPLATFORM
|
|
select PPC_INDIRECT_PCI if PPC32
|
|
select PPC_MPC106 if PPC32
|
|
default y
|
|
|
|
config PPC_PMAC64
|
|
bool
|
|
depends on PPC_PMAC && POWER4
|
|
select U3_DART
|
|
select MPIC_BROKEN_U3
|
|
select GENERIC_TBSYNC
|
|
select PPC_970_NAP
|
|
default y
|
|
|
|
config PPC_PREP
|
|
bool "PowerPC Reference Platform (PReP) based machines"
|
|
depends on PPC_MULTIPLATFORM && PPC32 && BROKEN
|
|
select PPC_I8259
|
|
select PPC_INDIRECT_PCI
|
|
select PPC_UDBG_16550
|
|
default y
|
|
|
|
config PPC_MAPLE
|
|
depends on PPC_MULTIPLATFORM && PPC64
|
|
bool "Maple 970FX Evaluation Board"
|
|
select U3_DART
|
|
select MPIC_BROKEN_U3
|
|
select GENERIC_TBSYNC
|
|
select PPC_UDBG_16550
|
|
select PPC_970_NAP
|
|
default n
|
|
help
|
|
This option enables support for the Maple 970FX Evaluation Board.
|
|
For more informations, refer to <http://www.970eval.com>
|
|
|
|
config PPC_CELL
|
|
bool "Cell Broadband Processor Architecture"
|
|
depends on PPC_MULTIPLATFORM && PPC64
|
|
select PPC_RTAS
|
|
select MMIO_NVRAM
|
|
select PPC_UDBG_16550
|
|
|
|
config XICS
|
|
depends on PPC_PSERIES
|
|
bool
|
|
default y
|
|
|
|
config U3_DART
|
|
bool
|
|
depends on PPC_MULTIPLATFORM && PPC64
|
|
default n
|
|
|
|
config MPIC
|
|
depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE || PPC_CHRP
|
|
bool
|
|
default y
|
|
|
|
config PPC_RTAS
|
|
bool
|
|
default n
|
|
|
|
config RTAS_ERROR_LOGGING
|
|
bool
|
|
depends on PPC_RTAS
|
|
default n
|
|
|
|
config RTAS_PROC
|
|
bool "Proc interface to RTAS"
|
|
depends on PPC_RTAS
|
|
default y
|
|
|
|
config RTAS_FLASH
|
|
tristate "Firmware flash interface"
|
|
depends on PPC64 && RTAS_PROC
|
|
|
|
config MMIO_NVRAM
|
|
bool
|
|
default n
|
|
|
|
config MPIC_BROKEN_U3
|
|
bool
|
|
depends on PPC_MAPLE
|
|
default y
|
|
|
|
config CELL_IIC
|
|
depends on PPC_CELL
|
|
bool
|
|
default y
|
|
|
|
config IBMVIO
|
|
depends on PPC_PSERIES || PPC_ISERIES
|
|
bool
|
|
default y
|
|
|
|
config IBMEBUS
|
|
depends on PPC_PSERIES
|
|
bool "Support for GX bus based adapters"
|
|
help
|
|
Bus device driver for GX bus based adapters.
|
|
|
|
config PPC_MPC106
|
|
bool
|
|
default n
|
|
|
|
config PPC_970_NAP
|
|
bool
|
|
default n
|
|
|
|
source "drivers/cpufreq/Kconfig"
|
|
|
|
config CPU_FREQ_PMAC
|
|
bool "Support for Apple PowerBooks"
|
|
depends on CPU_FREQ && ADB_PMU && PPC32
|
|
select CPU_FREQ_TABLE
|
|
help
|
|
This adds support for frequency switching on Apple PowerBooks,
|
|
this currently includes some models of iBook & Titanium
|
|
PowerBook.
|
|
|
|
config CPU_FREQ_PMAC64
|
|
bool "Support for some Apple G5s"
|
|
depends on CPU_FREQ && PMAC_SMU && PPC64
|
|
select CPU_FREQ_TABLE
|
|
help
|
|
This adds support for frequency switching on Apple iMac G5,
|
|
and some of the more recent desktop G5 machines as well.
|
|
|
|
config PPC601_SYNC_FIX
|
|
bool "Workarounds for PPC601 bugs"
|
|
depends on 6xx && (PPC_PREP || PPC_PMAC)
|
|
help
|
|
Some versions of the PPC601 (the first PowerPC chip) have bugs which
|
|
mean that extra synchronization instructions are required near
|
|
certain instructions, typically those that make major changes to the
|
|
CPU state. These extra instructions reduce performance slightly.
|
|
If you say N here, these extra instructions will not be included,
|
|
resulting in a kernel which will run faster but may not run at all
|
|
on some systems with the PPC601 chip.
|
|
|
|
If in doubt, say Y here.
|
|
|
|
config TAU
|
|
bool "On-chip CPU temperature sensor support"
|
|
depends on 6xx
|
|
help
|
|
G3 and G4 processors have an on-chip temperature sensor called the
|
|
'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
|
|
temperature within 2-4 degrees Celsius. This option shows the current
|
|
on-die temperature in /proc/cpuinfo if the cpu supports it.
|
|
|
|
Unfortunately, on some chip revisions, this sensor is very inaccurate
|
|
and in many cases, does not work at all, so don't assume the cpu
|
|
temp is actually what /proc/cpuinfo says it is.
|
|
|
|
config TAU_INT
|
|
bool "Interrupt driven TAU driver (DANGEROUS)"
|
|
depends on TAU
|
|
---help---
|
|
The TAU supports an interrupt driven mode which causes an interrupt
|
|
whenever the temperature goes out of range. This is the fastest way
|
|
to get notified the temp has exceeded a range. With this option off,
|
|
a timer is used to re-check the temperature periodically.
|
|
|
|
However, on some cpus it appears that the TAU interrupt hardware
|
|
is buggy and can cause a situation which would lead unexplained hard
|
|
lockups.
|
|
|
|
Unless you are extending the TAU driver, or enjoy kernel/hardware
|
|
debugging, leave this option off.
|
|
|
|
config TAU_AVERAGE
|
|
bool "Average high and low temp"
|
|
depends on TAU
|
|
---help---
|
|
The TAU hardware can compare the temperature to an upper and lower
|
|
bound. The default behavior is to show both the upper and lower
|
|
bound in /proc/cpuinfo. If the range is large, the temperature is
|
|
either changing a lot, or the TAU hardware is broken (likely on some
|
|
G4's). If the range is small (around 4 degrees), the temperature is
|
|
relatively stable. If you say Y here, a single temperature value,
|
|
halfway between the upper and lower bounds, will be reported in
|
|
/proc/cpuinfo.
|
|
|
|
If in doubt, say N here.
|
|
endmenu
|
|
|
|
source arch/powerpc/platforms/embedded6xx/Kconfig
|
|
source arch/powerpc/platforms/4xx/Kconfig
|
|
source arch/powerpc/platforms/83xx/Kconfig
|
|
source arch/powerpc/platforms/85xx/Kconfig
|
|
source arch/powerpc/platforms/86xx/Kconfig
|
|
source arch/powerpc/platforms/8xx/Kconfig
|
|
source arch/powerpc/platforms/cell/Kconfig
|
|
|
|
menu "Kernel options"
|
|
|
|
config HIGHMEM
|
|
bool "High memory support"
|
|
depends on PPC32
|
|
|
|
source kernel/Kconfig.hz
|
|
source kernel/Kconfig.preempt
|
|
source "fs/Kconfig.binfmt"
|
|
|
|
# We optimistically allocate largepages from the VM, so make the limit
|
|
# large enough (16MB). This badly named config option is actually
|
|
# max order + 1
|
|
config FORCE_MAX_ZONEORDER
|
|
int
|
|
depends on PPC64
|
|
default "9" if PPC_64K_PAGES
|
|
default "13"
|
|
|
|
config MATH_EMULATION
|
|
bool "Math emulation"
|
|
depends on 4xx || 8xx || E200 || E500
|
|
---help---
|
|
Some PowerPC chips designed for embedded applications do not have
|
|
a floating-point unit and therefore do not implement the
|
|
floating-point instructions in the PowerPC instruction set. If you
|
|
say Y here, the kernel will include code to emulate a floating-point
|
|
unit, which will allow programs that use floating-point
|
|
instructions to run.
|
|
|
|
config IOMMU_VMERGE
|
|
bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
|
|
depends on EXPERIMENTAL && PPC64
|
|
default n
|
|
help
|
|
Cause IO segments sent to a device for DMA to be merged virtually
|
|
by the IOMMU when they happen to have been allocated contiguously.
|
|
This doesn't add pressure to the IOMMU allocator. However, some
|
|
drivers don't support getting large merged segments coming back
|
|
from *_map_sg(). Say Y if you know the drivers you are using are
|
|
properly handling this case.
|
|
|
|
config HOTPLUG_CPU
|
|
bool "Support for enabling/disabling CPUs"
|
|
depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
|
|
---help---
|
|
Say Y here to be able to disable and re-enable individual
|
|
CPUs at runtime on SMP machines.
|
|
|
|
Say N if you are unsure.
|
|
|
|
config KEXEC
|
|
bool "kexec system call (EXPERIMENTAL)"
|
|
depends on PPC_MULTIPLATFORM && EXPERIMENTAL
|
|
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
|
|
but it is indepedent of the system firmware. And like a reboot
|
|
you can start any kernel with it, not just Linux.
|
|
|
|
The name comes from the similiarity to the exec system call.
|
|
|
|
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
|
|
initially work for you. It may help to enable device hotplugging
|
|
support. As of this writing the exact hardware interface is
|
|
strongly in flux, so no good recommendation can be made.
|
|
|
|
config CRASH_DUMP
|
|
bool "Build a kdump crash kernel (EXPERIMENTAL)"
|
|
depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL
|
|
help
|
|
Build a kernel suitable for use as a kdump capture kernel.
|
|
The kernel will be linked at a different address than normal, and
|
|
so can only be used for Kdump.
|
|
|
|
Don't change this unless you know what you are doing.
|
|
|
|
config EMBEDDEDBOOT
|
|
bool
|
|
depends on 8xx || 8260
|
|
default y
|
|
|
|
config PC_KEYBOARD
|
|
bool "PC PS/2 style Keyboard"
|
|
depends on 4xx || CPM2
|
|
|
|
config PPCBUG_NVRAM
|
|
bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
|
|
default y if PPC_PREP
|
|
|
|
config IRQ_ALL_CPUS
|
|
bool "Distribute interrupts on all CPUs by default"
|
|
depends on SMP && !MV64360
|
|
help
|
|
This option gives the kernel permission to distribute IRQs across
|
|
multiple CPUs. Saying N here will route all IRQs to the first
|
|
CPU. Generally saying Y is safe, although some problems have been
|
|
reported with SMP Power Macintoshes with this option enabled.
|
|
|
|
source "arch/powerpc/platforms/pseries/Kconfig"
|
|
|
|
config NUMA
|
|
bool "NUMA support"
|
|
depends on PPC64
|
|
default y if SMP && PPC_PSERIES
|
|
|
|
config NODES_SHIFT
|
|
int
|
|
default "4"
|
|
depends on NEED_MULTIPLE_NODES
|
|
|
|
config ARCH_SELECT_MEMORY_MODEL
|
|
def_bool y
|
|
depends on PPC64
|
|
|
|
config ARCH_FLATMEM_ENABLE
|
|
def_bool y
|
|
depends on (PPC64 && !NUMA) || PPC32
|
|
|
|
config ARCH_SPARSEMEM_ENABLE
|
|
def_bool y
|
|
depends on PPC64
|
|
|
|
config ARCH_SPARSEMEM_DEFAULT
|
|
def_bool y
|
|
depends on SMP && PPC_PSERIES
|
|
|
|
source "mm/Kconfig"
|
|
|
|
config HAVE_ARCH_EARLY_PFN_TO_NID
|
|
def_bool y
|
|
depends on NEED_MULTIPLE_NODES
|
|
|
|
config ARCH_MEMORY_PROBE
|
|
def_bool y
|
|
depends on MEMORY_HOTPLUG
|
|
|
|
config PPC_64K_PAGES
|
|
bool "64k page size"
|
|
depends on PPC64
|
|
help
|
|
This option changes the kernel logical page size to 64k. On machines
|
|
without processor support for 64k pages, the kernel will simulate
|
|
them by loading each individual 4k page on demand transparently,
|
|
while on hardware with such support, it will be used to map
|
|
normal application pages.
|
|
|
|
config SCHED_SMT
|
|
bool "SMT (Hyperthreading) scheduler support"
|
|
depends on PPC64 && SMP
|
|
default off
|
|
help
|
|
SMT scheduler support improves the CPU scheduler's decision making
|
|
when dealing with POWER5 cpus at a cost of slightly increased
|
|
overhead in some places. If unsure say N here.
|
|
|
|
config PROC_DEVICETREE
|
|
bool "Support for device tree in /proc"
|
|
depends on PROC_FS
|
|
help
|
|
This option adds a device-tree directory under /proc which contains
|
|
an image of the device tree that the kernel copies from Open
|
|
Firmware or other boot firmware. If unsure, say Y here.
|
|
|
|
source "arch/powerpc/platforms/prep/Kconfig"
|
|
|
|
config CMDLINE_BOOL
|
|
bool "Default bootloader kernel arguments"
|
|
depends on !PPC_ISERIES
|
|
|
|
config CMDLINE
|
|
string "Initial kernel command string"
|
|
depends on CMDLINE_BOOL
|
|
default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
|
|
help
|
|
On some platforms, there is currently no way for the boot loader to
|
|
pass arguments to the kernel. For these platforms, you can supply
|
|
some command-line options at build time by entering them here. In
|
|
most cases you will need to specify the root device here.
|
|
|
|
if !44x || BROKEN
|
|
source kernel/power/Kconfig
|
|
endif
|
|
|
|
config SECCOMP
|
|
bool "Enable seccomp to safely compute untrusted bytecode"
|
|
depends on PROC_FS
|
|
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.
|
|
|
|
endmenu
|
|
|
|
config ISA_DMA_API
|
|
bool
|
|
default y
|
|
|
|
menu "Bus options"
|
|
|
|
config ISA
|
|
bool "Support for ISA-bus hardware"
|
|
depends on PPC_PREP || PPC_CHRP
|
|
select PPC_I8259
|
|
help
|
|
Find out whether you have ISA slots on your motherboard. ISA is the
|
|
name of a bus system, i.e. the way the CPU talks to the other stuff
|
|
inside your box. If you have an Apple machine, say N here; if you
|
|
have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
|
|
you have an embedded board, consult your board documentation.
|
|
|
|
config GENERIC_ISA_DMA
|
|
bool
|
|
depends on PPC64 || POWER4 || 6xx && !CPM2
|
|
default y
|
|
|
|
config PPC_I8259
|
|
bool
|
|
default y if MPC8641_HPCN
|
|
default n
|
|
|
|
config PPC_INDIRECT_PCI
|
|
bool
|
|
depends on PCI
|
|
default y if 40x || 44x
|
|
default n
|
|
|
|
config EISA
|
|
bool
|
|
|
|
config SBUS
|
|
bool
|
|
|
|
config FSL_SOC
|
|
bool
|
|
|
|
# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
|
|
config MCA
|
|
bool
|
|
|
|
config PCI
|
|
bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES)
|
|
default y if !40x && !CPM2 && !8xx && !APUS && !PPC_83xx && !PPC_85xx && !PPC_86xx
|
|
default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
|
|
default PCI_QSPAN if !4xx && !CPM2 && 8xx
|
|
help
|
|
Find out whether your system includes a PCI bus. PCI is the name of
|
|
a bus system, i.e. the way the CPU talks to the other stuff inside
|
|
your box. If you say Y here, the kernel will include drivers and
|
|
infrastructure code to support PCI bus devices.
|
|
|
|
config PCI_DOMAINS
|
|
bool
|
|
default PCI
|
|
|
|
config PCI_QSPAN
|
|
bool "QSpan PCI"
|
|
depends on !4xx && !CPM2 && 8xx
|
|
select PPC_I8259
|
|
help
|
|
Say Y here if you have a system based on a Motorola 8xx-series
|
|
embedded processor with a QSPAN PCI interface, otherwise say N.
|
|
|
|
config PCI_8260
|
|
bool
|
|
depends on PCI && 8260
|
|
select PPC_INDIRECT_PCI
|
|
default y
|
|
|
|
config 8260_PCI9
|
|
bool "Enable workaround for MPC826x erratum PCI 9"
|
|
depends on PCI_8260 && !ADS8272
|
|
default y
|
|
|
|
choice
|
|
prompt "IDMA channel for PCI 9 workaround"
|
|
depends on 8260_PCI9
|
|
|
|
config 8260_PCI9_IDMA1
|
|
bool "IDMA1"
|
|
|
|
config 8260_PCI9_IDMA2
|
|
bool "IDMA2"
|
|
|
|
config 8260_PCI9_IDMA3
|
|
bool "IDMA3"
|
|
|
|
config 8260_PCI9_IDMA4
|
|
bool "IDMA4"
|
|
|
|
endchoice
|
|
|
|
source "drivers/pci/pcie/Kconfig"
|
|
|
|
source "drivers/pci/Kconfig"
|
|
|
|
source "drivers/pcmcia/Kconfig"
|
|
|
|
source "drivers/pci/hotplug/Kconfig"
|
|
|
|
endmenu
|
|
|
|
menu "Advanced setup"
|
|
depends on PPC32
|
|
|
|
config ADVANCED_OPTIONS
|
|
bool "Prompt for advanced kernel configuration options"
|
|
help
|
|
This option will enable prompting for a variety of advanced kernel
|
|
configuration options. These options can cause the kernel to not
|
|
work if they are set incorrectly, but can be used to optimize certain
|
|
aspects of kernel memory management.
|
|
|
|
Unless you know what you are doing, say N here.
|
|
|
|
comment "Default settings for advanced configuration options are used"
|
|
depends on !ADVANCED_OPTIONS
|
|
|
|
config HIGHMEM_START_BOOL
|
|
bool "Set high memory pool address"
|
|
depends on ADVANCED_OPTIONS && HIGHMEM
|
|
help
|
|
This option allows you to set the base address of the kernel virtual
|
|
area used to map high memory pages. This can be useful in
|
|
optimizing the layout of kernel virtual memory.
|
|
|
|
Say N here unless you know what you are doing.
|
|
|
|
config HIGHMEM_START
|
|
hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
|
|
default "0xfe000000"
|
|
|
|
config LOWMEM_SIZE_BOOL
|
|
bool "Set maximum low memory"
|
|
depends on ADVANCED_OPTIONS
|
|
help
|
|
This option allows you to set the maximum amount of memory which
|
|
will be used as "low memory", that is, memory which the kernel can
|
|
access directly, without having to set up a kernel virtual mapping.
|
|
This can be useful in optimizing the layout of kernel virtual
|
|
memory.
|
|
|
|
Say N here unless you know what you are doing.
|
|
|
|
config LOWMEM_SIZE
|
|
hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
|
|
default "0x30000000"
|
|
|
|
config KERNEL_START_BOOL
|
|
bool "Set custom kernel base address"
|
|
depends on ADVANCED_OPTIONS
|
|
help
|
|
This option allows you to set the kernel virtual address at which
|
|
the kernel will map low memory (the kernel image will be linked at
|
|
this address). This can be useful in optimizing the virtual memory
|
|
layout of the system.
|
|
|
|
Say N here unless you know what you are doing.
|
|
|
|
config KERNEL_START
|
|
hex "Virtual address of kernel base" if KERNEL_START_BOOL
|
|
default "0xc0000000"
|
|
|
|
config TASK_SIZE_BOOL
|
|
bool "Set custom user task size"
|
|
depends on ADVANCED_OPTIONS
|
|
help
|
|
This option allows you to set the amount of virtual address space
|
|
allocated to user tasks. This can be useful in optimizing the
|
|
virtual memory layout of the system.
|
|
|
|
Say N here unless you know what you are doing.
|
|
|
|
config TASK_SIZE
|
|
hex "Size of user task space" if TASK_SIZE_BOOL
|
|
default "0x80000000"
|
|
|
|
config CONSISTENT_START_BOOL
|
|
bool "Set custom consistent memory pool address"
|
|
depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
|
|
help
|
|
This option allows you to set the base virtual address
|
|
of the the consistent memory pool. This pool of virtual
|
|
memory is used to make consistent memory allocations.
|
|
|
|
config CONSISTENT_START
|
|
hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
|
|
default "0xff100000" if NOT_COHERENT_CACHE
|
|
|
|
config CONSISTENT_SIZE_BOOL
|
|
bool "Set custom consistent memory pool size"
|
|
depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
|
|
help
|
|
This option allows you to set the size of the the
|
|
consistent memory pool. This pool of virtual memory
|
|
is used to make consistent memory allocations.
|
|
|
|
config CONSISTENT_SIZE
|
|
hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
|
|
default "0x00200000" if NOT_COHERENT_CACHE
|
|
|
|
config BOOT_LOAD_BOOL
|
|
bool "Set the boot link/load address"
|
|
depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
|
|
help
|
|
This option allows you to set the initial load address of the zImage
|
|
or zImage.initrd file. This can be useful if you are on a board
|
|
which has a small amount of memory.
|
|
|
|
Say N here unless you know what you are doing.
|
|
|
|
config BOOT_LOAD
|
|
hex "Link/load address for booting" if BOOT_LOAD_BOOL
|
|
default "0x00400000" if 40x || 8xx || 8260
|
|
default "0x01000000" if 44x
|
|
default "0x00800000"
|
|
|
|
config PIN_TLB
|
|
bool "Pinned Kernel TLBs (860 ONLY)"
|
|
depends on ADVANCED_OPTIONS && 8xx
|
|
endmenu
|
|
|
|
if PPC64
|
|
config KERNEL_START
|
|
hex
|
|
default "0xc000000000000000"
|
|
endif
|
|
|
|
source "net/Kconfig"
|
|
|
|
source "drivers/Kconfig"
|
|
|
|
source "fs/Kconfig"
|
|
|
|
# XXX source "arch/ppc/8xx_io/Kconfig"
|
|
|
|
# XXX source "arch/ppc/8260_io/Kconfig"
|
|
|
|
source "arch/powerpc/platforms/iseries/Kconfig"
|
|
|
|
source "lib/Kconfig"
|
|
|
|
menu "Instrumentation Support"
|
|
depends on EXPERIMENTAL
|
|
|
|
source "arch/powerpc/oprofile/Kconfig"
|
|
|
|
config KPROBES
|
|
bool "Kprobes (EXPERIMENTAL)"
|
|
depends on PPC64 && EXPERIMENTAL && MODULES
|
|
help
|
|
Kprobes allows you to trap at almost any kernel address and
|
|
execute a callback function. register_kprobe() establishes
|
|
a probepoint and specifies the callback. Kprobes is useful
|
|
for kernel debugging, non-intrusive instrumentation and testing.
|
|
If in doubt, say "N".
|
|
endmenu
|
|
|
|
source "arch/powerpc/Kconfig.debug"
|
|
|
|
source "security/Kconfig"
|
|
|
|
config KEYS_COMPAT
|
|
bool
|
|
depends on COMPAT && KEYS
|
|
default y
|
|
|
|
source "crypto/Kconfig"
|