forked from Minki/linux
65fddcfca8
The replacement of <asm/pgrable.h> with <linux/pgtable.h> made the include
of the latter in the middle of asm includes. Fix this up with the aid of
the below script and manual adjustments here and there.
import sys
import re
if len(sys.argv) is not 3:
print "USAGE: %s <file> <header>" % (sys.argv[0])
sys.exit(1)
hdr_to_move="#include <linux/%s>" % sys.argv[2]
moved = False
in_hdrs = False
with open(sys.argv[1], "r") as f:
lines = f.readlines()
for _line in lines:
line = _line.rstrip('
')
if line == hdr_to_move:
continue
if line.startswith("#include <linux/"):
in_hdrs = True
elif not moved and in_hdrs:
moved = True
print hdr_to_move
print line
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Cain <bcain@codeaurora.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Nick Hu <nickhu@andestech.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vincent Chen <deanbo422@gmail.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: http://lkml.kernel.org/r/20200514170327.31389-4-rppt@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
198 lines
5.2 KiB
ArmAsm
198 lines
5.2 KiB
ArmAsm
// SPDX-License-Identifier: GPL-2.0
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// Copyright (C) 2005-2017 Andes Technology Corporation
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#include <linux/linkage.h>
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#include <linux/init.h>
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#include <linux/pgtable.h>
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#include <asm/ptrace.h>
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#include <asm/asm-offsets.h>
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#include <asm/page.h>
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#include <linux/sizes.h>
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#include <asm/thread_info.h>
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#ifdef CONFIG_CPU_BIG_ENDIAN
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#define OF_DT_MAGIC 0xd00dfeed
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#else
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#define OF_DT_MAGIC 0xedfe0dd0
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#endif
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.globl swapper_pg_dir
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.equ swapper_pg_dir, TEXTADDR - 0x4000
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/*
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* Kernel startup entry point.
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*/
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.section ".head.text", "ax"
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.type _stext, %function
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ENTRY(_stext)
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setgie.d ! Disable interrupt
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isb
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/*
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* Disable I/D-cache and enable it at a proper time
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*/
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mfsr $r0, $mr8
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li $r1, #~(CACHE_CTL_mskIC_EN|CACHE_CTL_mskDC_EN)
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and $r0, $r0, $r1
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mtsr $r0, $mr8
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/*
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* Process device tree blob
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*/
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andi $r0,$r2,#0x3
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li $r10, 0
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bne $r0, $r10, _nodtb
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lwi $r0, [$r2]
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li $r1, OF_DT_MAGIC
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bne $r0, $r1, _nodtb
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move $r10, $r2
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_nodtb:
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/*
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* Create a temporary mapping area for booting, before start_kernel
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*/
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sethi $r4, hi20(swapper_pg_dir)
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li $p0, (PAGE_OFFSET - PHYS_OFFSET)
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sub $r4, $r4, $p0
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tlbop FlushAll ! invalidate TLB\n"
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isb
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mtsr $r4, $L1_PPTB ! load page table pointer\n"
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#ifdef CONFIG_CPU_DCACHE_DISABLE
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#define MMU_CTL_NTCC MMU_CTL_CACHEABLE_NON
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#else
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#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH
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#define MMU_CTL_NTCC MMU_CTL_CACHEABLE_WT
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#else
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#define MMU_CTL_NTCC MMU_CTL_CACHEABLE_WB
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#endif
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#endif
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/* set NTC cacheability, mutliple page size in use */
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mfsr $r3, $MMU_CTL
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#if CONFIG_MEMORY_START >= 0xc0000000
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ori $r3, $r3, (MMU_CTL_NTCC << MMU_CTL_offNTC3)
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#elif CONFIG_MEMORY_START >= 0x80000000
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ori $r3, $r3, (MMU_CTL_NTCC << MMU_CTL_offNTC2)
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#elif CONFIG_MEMORY_START >= 0x40000000
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ori $r3, $r3, (MMU_CTL_NTCC << MMU_CTL_offNTC1)
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#else
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ori $r3, $r3, (MMU_CTL_NTCC << MMU_CTL_offNTC0)
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#endif
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#ifdef CONFIG_ANDES_PAGE_SIZE_4KB
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ori $r3, $r3, #(MMU_CTL_mskMPZIU)
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#else
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ori $r3, $r3, #(MMU_CTL_mskMPZIU|MMU_CTL_D8KB)
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#endif
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#ifdef CONFIG_HW_SUPPORT_UNALIGNMENT_ACCESS
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li $r0, #MMU_CTL_UNA
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or $r3, $r3, $r0
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#endif
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mtsr $r3, $MMU_CTL
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isb
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/* set page size and size of kernel image */
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mfsr $r0, $MMU_CFG
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srli $r3, $r0, MMU_CFG_offfEPSZ
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zeb $r3, $r3
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bnez $r3, _extra_page_size_support
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#ifdef CONFIG_ANDES_PAGE_SIZE_4KB
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li $r5, #SZ_4K ! Use 4KB page size
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#else
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li $r5, #SZ_8K ! Use 8KB page size
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li $r3, #1
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#endif
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mtsr $r3, $TLB_MISC
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b _image_size_check
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_extra_page_size_support: ! Use epzs pages size
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clz $r6, $r3
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subri $r2, $r6, #31
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li $r3, #1
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sll $r3, $r3, $r2
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/* MMU_CFG.EPSZ value -> meaning */
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mul $r5, $r3, $r3
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slli $r5, $r5, #14
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/* MMU_CFG.EPSZ -> TLB_MISC.ACC_PSZ */
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addi $r3, $r2, #0x2
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mtsr $r3, $TLB_MISC
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_image_size_check:
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/* calculate the image maximum size accepted by TLB config */
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andi $r6, $r0, MMU_CFG_mskTBW
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andi $r0, $r0, MMU_CFG_mskTBS
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srli $r6, $r6, MMU_CFG_offTBW
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srli $r0, $r0, MMU_CFG_offTBS
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addi $r6, $r6, #0x1 ! MMU_CFG.TBW value -> meaning
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addi $r0, $r0, #0x2 ! MMU_CFG.TBS value -> meaning
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sll $r0, $r6, $r0 ! entries = k-way * n-set
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mul $r6, $r0, $r5 ! max size = entries * page size
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/* check kernel image size */
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la $r3, (_end - PAGE_OFFSET)
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bgt $r3, $r6, __error
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li $r2, #(PHYS_OFFSET + TLB_DATA_kernel_text_attr)
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li $r3, PAGE_OFFSET
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add $r6, $r6, $r3
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_tlb:
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mtsr $r3, $TLB_VPN
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dsb
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tlbop $r2, RWR
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isb
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add $r3, $r3, $r5
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add $r2, $r2, $r5
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bgt $r6, $r3, _tlb
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mfsr $r3, $TLB_MISC ! setup access page size
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li $r2, #~0xf
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and $r3, $r3, $r2
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#ifdef CONFIG_ANDES_PAGE_SIZE_8KB
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ori $r3, $r3, #0x1
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#endif
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mtsr $r3, $TLB_MISC
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mfsr $r0, $MISC_CTL ! Enable BTB, RTP, shadow sp, and HW_PRE
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ori $r0, $r0, #MISC_init
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mtsr $r0, $MISC_CTL
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mfsr $p1, $PSW
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li $r15, #~PSW_clr ! clear WBNA|DME|IME|DT|IT|POM|INTL|GIE
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and $p1, $p1, $r15
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ori $p1, $p1, #PSW_init
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mtsr $p1, $IPSW ! when iret, it will automatically enable MMU
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la $lp, __mmap_switched
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mtsr $lp, $IPC
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iret
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nop
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.type __switch_data, %object
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__switch_data:
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.long __bss_start ! $r6
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.long _end ! $r7
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.long __atags_pointer ! $atag_pointer
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.long init_task ! $r9, move to $r25
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.long init_thread_union + THREAD_SIZE ! $sp
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/*
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* The following fragment of code is executed with the MMU on in MMU mode,
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* and uses absolute addresses; this is not position independent.
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*/
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.align
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.type __mmap_switched, %function
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__mmap_switched:
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la $r3, __switch_data
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lmw.bim $r6, [$r3], $r9, #0b0001
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move $r25, $r9
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move $fp, #0 ! Clear BSS (and zero $fp)
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beq $r7, $r6, _RRT
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1: swi.bi $fp, [$r6], #4
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bne $r7, $r6, 1b
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swi $r10, [$r8]
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_RRT:
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b start_kernel
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__error:
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b __error
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