mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-11 21:38:32 +08:00
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>
516 lines
12 KiB
ArmAsm
516 lines
12 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* linux/arch/arm/mm/proc-arm1020.S: MMU functions for ARM1020
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*
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* Copyright (C) 2000 ARM Limited
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* Copyright (C) 2000 Deep Blue Solutions Ltd.
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* hacked for non-paged-MM by Hyok S. Choi, 2003.
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*
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* These are the low level assembler for performing cache and TLB
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* functions on the arm1020.
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*/
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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/assembler.h>
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#include <asm/asm-offsets.h>
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#include <asm/hwcap.h>
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#include <asm/pgtable-hwdef.h>
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#include <asm/ptrace.h>
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#include "proc-macros.S"
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/*
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* This is the maximum size of an area which will be invalidated
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* using the single invalidate entry instructions. Anything larger
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* than this, and we go for the whole cache.
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*
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* This value should be chosen such that we choose the cheapest
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* alternative.
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*/
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#define MAX_AREA_SIZE 32768
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/*
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* The size of one data cache line.
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*/
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#define CACHE_DLINESIZE 32
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/*
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* The number of data cache segments.
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*/
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#define CACHE_DSEGMENTS 16
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/*
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* The number of lines in a cache segment.
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*/
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#define CACHE_DENTRIES 64
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/*
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* This is the size at which it becomes more efficient to
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* clean the whole cache, rather than using the individual
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* cache line maintenance instructions.
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*/
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#define CACHE_DLIMIT 32768
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.text
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/*
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* cpu_arm1020_proc_init()
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*/
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ENTRY(cpu_arm1020_proc_init)
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ret lr
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/*
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* cpu_arm1020_proc_fin()
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*/
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ENTRY(cpu_arm1020_proc_fin)
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mrc p15, 0, r0, c1, c0, 0 @ ctrl register
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bic r0, r0, #0x1000 @ ...i............
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bic r0, r0, #0x000e @ ............wca.
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mcr p15, 0, r0, c1, c0, 0 @ disable caches
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ret lr
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/*
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* cpu_arm1020_reset(loc)
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*
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* Perform a soft reset of the system. Put the CPU into the
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* same state as it would be if it had been reset, and branch
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* to what would be the reset vector.
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*
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* loc: location to jump to for soft reset
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*/
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.align 5
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.pushsection .idmap.text, "ax"
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ENTRY(cpu_arm1020_reset)
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mov ip, #0
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mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches
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mcr p15, 0, ip, c7, c10, 4 @ drain WB
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#ifdef CONFIG_MMU
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mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs
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#endif
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mrc p15, 0, ip, c1, c0, 0 @ ctrl register
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bic ip, ip, #0x000f @ ............wcam
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bic ip, ip, #0x1100 @ ...i...s........
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mcr p15, 0, ip, c1, c0, 0 @ ctrl register
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ret r0
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ENDPROC(cpu_arm1020_reset)
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.popsection
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/*
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* cpu_arm1020_do_idle()
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*/
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.align 5
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ENTRY(cpu_arm1020_do_idle)
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mcr p15, 0, r0, c7, c0, 4 @ Wait for interrupt
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ret lr
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/* ================================= CACHE ================================ */
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.align 5
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/*
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* flush_icache_all()
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*
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* Unconditionally clean and invalidate the entire icache.
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*/
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ENTRY(arm1020_flush_icache_all)
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#ifndef CONFIG_CPU_ICACHE_DISABLE
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mov r0, #0
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mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache
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#endif
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ret lr
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ENDPROC(arm1020_flush_icache_all)
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/*
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* flush_user_cache_all()
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*
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* Invalidate all cache entries in a particular address
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* space.
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*/
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ENTRY(arm1020_flush_user_cache_all)
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/* FALLTHROUGH */
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/*
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* flush_kern_cache_all()
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*
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* Clean and invalidate the entire cache.
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*/
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ENTRY(arm1020_flush_kern_cache_all)
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mov r2, #VM_EXEC
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mov ip, #0
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__flush_whole_cache:
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#ifndef CONFIG_CPU_DCACHE_DISABLE
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mcr p15, 0, ip, c7, c10, 4 @ drain WB
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mov r1, #(CACHE_DSEGMENTS - 1) << 5 @ 16 segments
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1: orr r3, r1, #(CACHE_DENTRIES - 1) << 26 @ 64 entries
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2: mcr p15, 0, r3, c7, c14, 2 @ clean+invalidate D index
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mcr p15, 0, ip, c7, c10, 4 @ drain WB
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subs r3, r3, #1 << 26
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bcs 2b @ entries 63 to 0
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subs r1, r1, #1 << 5
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bcs 1b @ segments 15 to 0
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#endif
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tst r2, #VM_EXEC
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#ifndef CONFIG_CPU_ICACHE_DISABLE
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mcrne p15, 0, ip, c7, c5, 0 @ invalidate I cache
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#endif
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mcrne p15, 0, ip, c7, c10, 4 @ drain WB
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ret lr
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/*
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* flush_user_cache_range(start, end, flags)
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*
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* Invalidate a range of cache entries in the specified
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* address space.
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*
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* - start - start address (inclusive)
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* - end - end address (exclusive)
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* - flags - vm_flags for this space
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*/
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ENTRY(arm1020_flush_user_cache_range)
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mov ip, #0
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sub r3, r1, r0 @ calculate total size
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cmp r3, #CACHE_DLIMIT
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bhs __flush_whole_cache
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#ifndef CONFIG_CPU_DCACHE_DISABLE
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mcr p15, 0, ip, c7, c10, 4
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1: mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry
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mcr p15, 0, ip, c7, c10, 4 @ drain WB
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add r0, r0, #CACHE_DLINESIZE
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cmp r0, r1
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blo 1b
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#endif
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tst r2, #VM_EXEC
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#ifndef CONFIG_CPU_ICACHE_DISABLE
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mcrne p15, 0, ip, c7, c5, 0 @ invalidate I cache
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#endif
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mcrne p15, 0, ip, c7, c10, 4 @ drain WB
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ret lr
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/*
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* coherent_kern_range(start, end)
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*
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* Ensure coherency between the Icache and the Dcache in the
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* region described by start. If you have non-snooping
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* Harvard caches, you need to implement this function.
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*
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* - start - virtual start address
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* - end - virtual end address
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*/
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ENTRY(arm1020_coherent_kern_range)
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/* FALLTRHOUGH */
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/*
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* coherent_user_range(start, end)
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*
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* Ensure coherency between the Icache and the Dcache in the
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* region described by start. If you have non-snooping
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* Harvard caches, you need to implement this function.
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*
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* - start - virtual start address
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* - end - virtual end address
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*/
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ENTRY(arm1020_coherent_user_range)
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mov ip, #0
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bic r0, r0, #CACHE_DLINESIZE - 1
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mcr p15, 0, ip, c7, c10, 4
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1:
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#ifndef CONFIG_CPU_DCACHE_DISABLE
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mcr p15, 0, r0, c7, c10, 1 @ clean D entry
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mcr p15, 0, ip, c7, c10, 4 @ drain WB
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#endif
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#ifndef CONFIG_CPU_ICACHE_DISABLE
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mcr p15, 0, r0, c7, c5, 1 @ invalidate I entry
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#endif
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add r0, r0, #CACHE_DLINESIZE
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cmp r0, r1
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blo 1b
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mcr p15, 0, ip, c7, c10, 4 @ drain WB
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mov r0, #0
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ret lr
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/*
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* flush_kern_dcache_area(void *addr, size_t size)
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*
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* Ensure no D cache aliasing occurs, either with itself or
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* the I cache
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*
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* - addr - kernel address
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* - size - region size
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*/
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ENTRY(arm1020_flush_kern_dcache_area)
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mov ip, #0
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#ifndef CONFIG_CPU_DCACHE_DISABLE
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add r1, r0, r1
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1: mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry
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mcr p15, 0, ip, c7, c10, 4 @ drain WB
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add r0, r0, #CACHE_DLINESIZE
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cmp r0, r1
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blo 1b
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#endif
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mcr p15, 0, ip, c7, c10, 4 @ drain WB
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ret lr
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/*
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* dma_inv_range(start, end)
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*
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* Invalidate (discard) the specified virtual address range.
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* May not write back any entries. If 'start' or 'end'
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* are not cache line aligned, those lines must be written
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* back.
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*
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* - start - virtual start address
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* - end - virtual end address
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*
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* (same as v4wb)
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*/
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arm1020_dma_inv_range:
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mov ip, #0
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#ifndef CONFIG_CPU_DCACHE_DISABLE
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tst r0, #CACHE_DLINESIZE - 1
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bic r0, r0, #CACHE_DLINESIZE - 1
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mcrne p15, 0, ip, c7, c10, 4
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mcrne p15, 0, r0, c7, c10, 1 @ clean D entry
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mcrne p15, 0, ip, c7, c10, 4 @ drain WB
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tst r1, #CACHE_DLINESIZE - 1
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mcrne p15, 0, ip, c7, c10, 4
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mcrne p15, 0, r1, c7, c10, 1 @ clean D entry
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mcrne p15, 0, ip, c7, c10, 4 @ drain WB
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1: mcr p15, 0, r0, c7, c6, 1 @ invalidate D entry
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add r0, r0, #CACHE_DLINESIZE
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cmp r0, r1
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blo 1b
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#endif
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mcr p15, 0, ip, c7, c10, 4 @ drain WB
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ret lr
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/*
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* dma_clean_range(start, end)
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*
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* Clean the specified virtual address range.
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*
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* - start - virtual start address
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* - end - virtual end address
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*
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* (same as v4wb)
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*/
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arm1020_dma_clean_range:
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mov ip, #0
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#ifndef CONFIG_CPU_DCACHE_DISABLE
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bic r0, r0, #CACHE_DLINESIZE - 1
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1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry
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mcr p15, 0, ip, c7, c10, 4 @ drain WB
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add r0, r0, #CACHE_DLINESIZE
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cmp r0, r1
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blo 1b
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#endif
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mcr p15, 0, ip, c7, c10, 4 @ drain WB
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ret lr
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/*
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* dma_flush_range(start, end)
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*
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* Clean and invalidate the specified virtual address range.
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*
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* - start - virtual start address
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* - end - virtual end address
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*/
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ENTRY(arm1020_dma_flush_range)
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mov ip, #0
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#ifndef CONFIG_CPU_DCACHE_DISABLE
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bic r0, r0, #CACHE_DLINESIZE - 1
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mcr p15, 0, ip, c7, c10, 4
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1: mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry
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mcr p15, 0, ip, c7, c10, 4 @ drain WB
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add r0, r0, #CACHE_DLINESIZE
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cmp r0, r1
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blo 1b
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#endif
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mcr p15, 0, ip, c7, c10, 4 @ drain WB
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ret lr
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/*
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* dma_map_area(start, size, dir)
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* - start - kernel virtual start address
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* - size - size of region
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* - dir - DMA direction
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*/
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ENTRY(arm1020_dma_map_area)
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add r1, r1, r0
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cmp r2, #DMA_TO_DEVICE
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beq arm1020_dma_clean_range
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bcs arm1020_dma_inv_range
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b arm1020_dma_flush_range
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ENDPROC(arm1020_dma_map_area)
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/*
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* dma_unmap_area(start, size, dir)
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* - start - kernel virtual start address
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* - size - size of region
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* - dir - DMA direction
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*/
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ENTRY(arm1020_dma_unmap_area)
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ret lr
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ENDPROC(arm1020_dma_unmap_area)
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.globl arm1020_flush_kern_cache_louis
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.equ arm1020_flush_kern_cache_louis, arm1020_flush_kern_cache_all
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@ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S)
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define_cache_functions arm1020
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.align 5
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ENTRY(cpu_arm1020_dcache_clean_area)
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#ifndef CONFIG_CPU_DCACHE_DISABLE
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mov ip, #0
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1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry
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mcr p15, 0, ip, c7, c10, 4 @ drain WB
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add r0, r0, #CACHE_DLINESIZE
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subs r1, r1, #CACHE_DLINESIZE
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bhi 1b
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#endif
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ret lr
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/* =============================== PageTable ============================== */
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/*
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* cpu_arm1020_switch_mm(pgd)
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*
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* Set the translation base pointer to be as described by pgd.
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*
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* pgd: new page tables
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*/
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.align 5
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ENTRY(cpu_arm1020_switch_mm)
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#ifdef CONFIG_MMU
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#ifndef CONFIG_CPU_DCACHE_DISABLE
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mcr p15, 0, r3, c7, c10, 4
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mov r1, #0xF @ 16 segments
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1: mov r3, #0x3F @ 64 entries
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2: mov ip, r3, LSL #26 @ shift up entry
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orr ip, ip, r1, LSL #5 @ shift in/up index
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mcr p15, 0, ip, c7, c14, 2 @ Clean & Inval DCache entry
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mov ip, #0
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mcr p15, 0, ip, c7, c10, 4
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subs r3, r3, #1
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cmp r3, #0
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bge 2b @ entries 3F to 0
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subs r1, r1, #1
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cmp r1, #0
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bge 1b @ segments 15 to 0
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#endif
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mov r1, #0
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#ifndef CONFIG_CPU_ICACHE_DISABLE
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mcr p15, 0, r1, c7, c5, 0 @ invalidate I cache
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#endif
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mcr p15, 0, r1, c7, c10, 4 @ drain WB
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mcr p15, 0, r0, c2, c0, 0 @ load page table pointer
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mcr p15, 0, r1, c8, c7, 0 @ invalidate I & D TLBs
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#endif /* CONFIG_MMU */
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ret lr
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/*
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* cpu_arm1020_set_pte(ptep, pte)
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*
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* Set a PTE and flush it out
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*/
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.align 5
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ENTRY(cpu_arm1020_set_pte_ext)
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#ifdef CONFIG_MMU
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armv3_set_pte_ext
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mov r0, r0
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#ifndef CONFIG_CPU_DCACHE_DISABLE
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mcr p15, 0, r0, c7, c10, 4
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mcr p15, 0, r0, c7, c10, 1 @ clean D entry
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#endif
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mcr p15, 0, r0, c7, c10, 4 @ drain WB
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#endif /* CONFIG_MMU */
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ret lr
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.type __arm1020_setup, #function
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__arm1020_setup:
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mov r0, #0
|
|
mcr p15, 0, r0, c7, c7 @ invalidate I,D caches on v4
|
|
mcr p15, 0, r0, c7, c10, 4 @ drain write buffer on v4
|
|
#ifdef CONFIG_MMU
|
|
mcr p15, 0, r0, c8, c7 @ invalidate I,D TLBs on v4
|
|
#endif
|
|
|
|
adr r5, arm1020_crval
|
|
ldmia r5, {r5, r6}
|
|
mrc p15, 0, r0, c1, c0 @ get control register v4
|
|
bic r0, r0, r5
|
|
orr r0, r0, r6
|
|
#ifdef CONFIG_CPU_CACHE_ROUND_ROBIN
|
|
orr r0, r0, #0x4000 @ .R.. .... .... ....
|
|
#endif
|
|
ret lr
|
|
.size __arm1020_setup, . - __arm1020_setup
|
|
|
|
/*
|
|
* R
|
|
* .RVI ZFRS BLDP WCAM
|
|
* .011 1001 ..11 0101
|
|
*/
|
|
.type arm1020_crval, #object
|
|
arm1020_crval:
|
|
crval clear=0x0000593f, mmuset=0x00003935, ucset=0x00001930
|
|
|
|
__INITDATA
|
|
@ define struct processor (see <asm/proc-fns.h> and proc-macros.S)
|
|
define_processor_functions arm1020, dabort=v4t_early_abort, pabort=legacy_pabort
|
|
|
|
|
|
.section ".rodata"
|
|
|
|
string cpu_arch_name, "armv5t"
|
|
string cpu_elf_name, "v5"
|
|
|
|
.type cpu_arm1020_name, #object
|
|
cpu_arm1020_name:
|
|
.ascii "ARM1020"
|
|
#ifndef CONFIG_CPU_ICACHE_DISABLE
|
|
.ascii "i"
|
|
#endif
|
|
#ifndef CONFIG_CPU_DCACHE_DISABLE
|
|
.ascii "d"
|
|
#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH
|
|
.ascii "(wt)"
|
|
#else
|
|
.ascii "(wb)"
|
|
#endif
|
|
#endif
|
|
#ifndef CONFIG_CPU_BPREDICT_DISABLE
|
|
.ascii "B"
|
|
#endif
|
|
#ifdef CONFIG_CPU_CACHE_ROUND_ROBIN
|
|
.ascii "RR"
|
|
#endif
|
|
.ascii "\0"
|
|
.size cpu_arm1020_name, . - cpu_arm1020_name
|
|
|
|
.align
|
|
|
|
.section ".proc.info.init", "a"
|
|
|
|
.type __arm1020_proc_info,#object
|
|
__arm1020_proc_info:
|
|
.long 0x4104a200 @ ARM 1020T (Architecture v5T)
|
|
.long 0xff0ffff0
|
|
.long PMD_TYPE_SECT | \
|
|
PMD_SECT_AP_WRITE | \
|
|
PMD_SECT_AP_READ
|
|
.long PMD_TYPE_SECT | \
|
|
PMD_SECT_AP_WRITE | \
|
|
PMD_SECT_AP_READ
|
|
initfn __arm1020_setup, __arm1020_proc_info
|
|
.long cpu_arch_name
|
|
.long cpu_elf_name
|
|
.long HWCAP_SWP | HWCAP_HALF | HWCAP_THUMB
|
|
.long cpu_arm1020_name
|
|
.long arm1020_processor_functions
|
|
.long v4wbi_tlb_fns
|
|
.long v4wb_user_fns
|
|
.long arm1020_cache_fns
|
|
.size __arm1020_proc_info, . - __arm1020_proc_info
|