arch-$(CONFIG_CPU_32v3) :=-D__LINUX_ARM_ARCH__=3 -march=armv3
# This selects how we optimise for the processor.
-tune-$(CONFIG_CPU_ARM610) :=-mtune=arm610
-tune-$(CONFIG_CPU_ARM710) :=-mtune=arm710
tune-$(CONFIG_CPU_ARM7TDMI) :=-mtune=arm7tdmi
tune-$(CONFIG_CPU_ARM720T) :=-mtune=arm7tdmi
tune-$(CONFIG_CPU_ARM740T) :=-mtune=arm7tdmi
CONFIG_MODULE_UNLOAD=y
# CONFIG_BLK_DEV_BSG is not set
CONFIG_ARCH_RPC=y
-CONFIG_CPU_ARM610=y
-CONFIG_CPU_ARM710=y
CONFIG_CPU_SA110=y
CONFIG_ZBOOT_ROM_TEXT=0x0
CONFIG_ZBOOT_ROM_BSS=0x0
#undef CPU_DABORT_HANDLER
#undef MULTI_DABORT
-#if defined(CONFIG_CPU_ARM610)
-# ifdef CPU_DABORT_HANDLER
-# define MULTI_DABORT 1
-# else
-# define CPU_DABORT_HANDLER cpu_arm6_data_abort
-# endif
-#endif
-
#if defined(CONFIG_CPU_ARM710)
# ifdef CPU_DABORT_HANDLER
# define MULTI_DABORT 1
* CPU_NAME - the prefix for CPU related functions
*/
-#ifdef CONFIG_CPU_ARM610
-# ifdef CPU_NAME
-# undef MULTI_CPU
-# define MULTI_CPU
-# else
-# define CPU_NAME cpu_arm6
-# endif
-#endif
-
#ifdef CONFIG_CPU_ARM7TDMI
# ifdef CPU_NAME
# undef MULTI_CPU
# endif
#endif
-#ifdef CONFIG_CPU_ARM710
-# ifdef CPU_NAME
-# undef MULTI_CPU
-# define MULTI_CPU
-# else
-# define CPU_NAME cpu_arm7
-# endif
-#endif
-
#ifdef CONFIG_CPU_ARM720T
# ifdef CPU_NAME
# undef MULTI_CPU
* processor(s) we're building for.
*
* We have the following to choose from:
- * v3 - ARMv3
* v4wt - ARMv4 with writethrough cache, without minicache
* v4wb - ARMv4 with writeback cache, without minicache
* v4_mc - ARMv4 with minicache
#undef _USER
#undef MULTI_USER
-#ifdef CONFIG_CPU_COPY_V3
-# ifdef _USER
-# define MULTI_USER 1
-# else
-# define _USER v3
-# endif
-#endif
-
#ifdef CONFIG_CPU_COPY_V4WT
# ifdef _USER
# define MULTI_USER 1
#define MULTI_TLB 1
#endif
-#define v3_tlb_flags (TLB_V3_FULL | TLB_V3_PAGE)
-
-#ifdef CONFIG_CPU_TLB_V3
-# define v3_possible_flags v3_tlb_flags
-# define v3_always_flags v3_tlb_flags
-# ifdef _TLB
-# define MULTI_TLB 1
-# else
-# define _TLB v3
-# endif
-#else
-# define v3_possible_flags 0
-# define v3_always_flags (-1UL)
-#endif
-
#define v4_tlb_flags (TLB_V4_U_FULL | TLB_V4_U_PAGE)
#ifdef CONFIG_CPU_TLB_V4WT
* implemented the "%?" method, but this has been discontinued due to too
* many people getting it wrong.
*/
-#define possible_tlb_flags (v3_possible_flags | \
- v4_possible_flags | \
+#define possible_tlb_flags (v4_possible_flags | \
v4wbi_possible_flags | \
fr_possible_flags | \
v4wb_possible_flags | \
v6wbi_possible_flags | \
v7wbi_possible_flags)
-#define always_tlb_flags (v3_always_flags & \
- v4_always_flags & \
+#define always_tlb_flags (v4_always_flags & \
v4wbi_always_flags & \
fr_always_flags & \
v4wb_always_flags & \
#endif
tst r0, #0x08000000 @ only CDP/CPRT/LDC/STC have bit 27
tstne r0, #0x04000000 @ bit 26 set on both ARM and Thumb-2
-#if defined(CONFIG_CPU_ARM610) || defined(CONFIG_CPU_ARM710)
- and r8, r0, #0x0f000000 @ mask out op-code bits
- teqne r8, #0x0f000000 @ SWI (ARM6/7 bug)?
-#endif
moveq pc, lr
get_thread_info r10 @ get current thread
and r8, r0, #0x00000f00 @ mask out CP number
*-----------------------------------------------------------------------------
*/
- /* If we're optimising for StrongARM the resulting code won't
- run on an ARM7 and we can save a couple of instructions.
- --pb */
-#ifdef CONFIG_CPU_ARM710
-#define A710(code...) code
-.Larm710bug:
- ldmia sp, {r0 - lr}^ @ Get calling r0 - lr
- mov r0, r0
- add sp, sp, #S_FRAME_SIZE
- subs pc, lr, #4
-#else
-#define A710(code...)
-#endif
-
.align 5
ENTRY(vector_swi)
sub sp, sp, #S_FRAME_SIZE
ldreq r10, [lr, #-4] @ get SWI instruction
#else
ldr r10, [lr, #-4] @ get SWI instruction
- A710( and ip, r10, #0x0f000000 @ check for SWI )
- A710( teq ip, #0x0f000000 )
- A710( bne .Larm710bug )
#endif
#ifdef CONFIG_CPU_ENDIAN_BE8
rev r10, r10 @ little endian instruction
/*
* Pure EABI user space always put syscall number into scno (r7).
*/
- A710( ldr ip, [lr, #-4] @ get SWI instruction )
- A710( and ip, ip, #0x0f000000 @ check for SWI )
- A710( teq ip, #0x0f000000 )
- A710( bne .Larm710bug )
-
#elif defined(CONFIG_ARM_THUMB)
-
/* Legacy ABI only, possibly thumb mode. */
tst r8, #PSR_T_BIT @ this is SPSR from save_user_regs
addne scno, r7, #__NR_SYSCALL_BASE @ put OS number in
ldreq scno, [lr, #-4]
#else
-
/* Legacy ABI only. */
ldr scno, [lr, #-4] @ get SWI instruction
- A710( and ip, scno, #0x0f000000 @ check for SWI )
- A710( teq ip, #0x0f000000 )
- A710( bne .Larm710bug )
-
#endif
#ifdef CONFIG_ALIGNMENT_TRAP
call_with_stack.o
mmu-y := clear_user.o copy_page.o getuser.o putuser.o
-
-# the code in uaccess.S is not preemption safe and
-# probably faster on ARMv3 only
-ifeq ($(CONFIG_PREEMPT),y)
- mmu-y += copy_from_user.o copy_to_user.o
-else
-ifneq ($(CONFIG_CPU_32v3),y)
- mmu-y += copy_from_user.o copy_to_user.o
-else
- mmu-y += uaccess.o
-endif
-endif
+mmu-y += copy_from_user.o copy_to_user.o
# using lib_ here won't override already available weak symbols
obj-$(CONFIG_UACCESS_WITH_MEMCPY) += uaccess_with_memcpy.o
-lib-$(CONFIG_MMU) += $(mmu-y)
-
-ifeq ($(CONFIG_CPU_32v3),y)
- lib-y += io-readsw-armv3.o io-writesw-armv3.o
-else
- lib-y += io-readsw-armv4.o io-writesw-armv4.o
-endif
-
+lib-$(CONFIG_MMU) += $(mmu-y)
+lib-y += io-readsw-armv4.o io-writesw-armv4.o
lib-$(CONFIG_ARCH_RPC) += ecard.o io-acorn.o floppydma.o
lib-$(CONFIG_ARCH_SHARK) += io-shark.o
+++ /dev/null
-/*
- * linux/arch/arm/lib/io-readsw-armv3.S
- *
- * Copyright (C) 1995-2000 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/linkage.h>
-#include <asm/assembler.h>
-
-.Linsw_bad_alignment:
- adr r0, .Linsw_bad_align_msg
- mov r2, lr
- b panic
-.Linsw_bad_align_msg:
- .asciz "insw: bad buffer alignment (0x%p, lr=0x%08lX)\n"
- .align
-
-.Linsw_align: tst r1, #1
- bne .Linsw_bad_alignment
-
- ldr r3, [r0]
- strb r3, [r1], #1
- mov r3, r3, lsr #8
- strb r3, [r1], #1
-
- subs r2, r2, #1
- moveq pc, lr
-
-ENTRY(__raw_readsw)
- teq r2, #0 @ do we have to check for the zero len?
- moveq pc, lr
- tst r1, #3
- bne .Linsw_align
-
-.Linsw_aligned: mov ip, #0xff
- orr ip, ip, ip, lsl #8
- stmfd sp!, {r4, r5, r6, lr}
-
- subs r2, r2, #8
- bmi .Lno_insw_8
-
-.Linsw_8_lp: ldr r3, [r0]
- and r3, r3, ip
- ldr r4, [r0]
- orr r3, r3, r4, lsl #16
-
- ldr r4, [r0]
- and r4, r4, ip
- ldr r5, [r0]
- orr r4, r4, r5, lsl #16
-
- ldr r5, [r0]
- and r5, r5, ip
- ldr r6, [r0]
- orr r5, r5, r6, lsl #16
-
- ldr r6, [r0]
- and r6, r6, ip
- ldr lr, [r0]
- orr r6, r6, lr, lsl #16
-
- stmia r1!, {r3 - r6}
-
- subs r2, r2, #8
- bpl .Linsw_8_lp
-
- tst r2, #7
- ldmeqfd sp!, {r4, r5, r6, pc}
-
-.Lno_insw_8: tst r2, #4
- beq .Lno_insw_4
-
- ldr r3, [r0]
- and r3, r3, ip
- ldr r4, [r0]
- orr r3, r3, r4, lsl #16
-
- ldr r4, [r0]
- and r4, r4, ip
- ldr r5, [r0]
- orr r4, r4, r5, lsl #16
-
- stmia r1!, {r3, r4}
-
-.Lno_insw_4: tst r2, #2
- beq .Lno_insw_2
-
- ldr r3, [r0]
- and r3, r3, ip
- ldr r4, [r0]
- orr r3, r3, r4, lsl #16
-
- str r3, [r1], #4
-
-.Lno_insw_2: tst r2, #1
- ldrne r3, [r0]
- strneb r3, [r1], #1
- movne r3, r3, lsr #8
- strneb r3, [r1]
-
- ldmfd sp!, {r4, r5, r6, pc}
-
-
+++ /dev/null
-/*
- * linux/arch/arm/lib/io-writesw-armv3.S
- *
- * Copyright (C) 1995-2000 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/linkage.h>
-#include <asm/assembler.h>
-
-.Loutsw_bad_alignment:
- adr r0, .Loutsw_bad_align_msg
- mov r2, lr
- b panic
-.Loutsw_bad_align_msg:
- .asciz "outsw: bad buffer alignment (0x%p, lr=0x%08lX)\n"
- .align
-
-.Loutsw_align: tst r1, #1
- bne .Loutsw_bad_alignment
-
- add r1, r1, #2
-
- ldr r3, [r1, #-4]
- mov r3, r3, lsr #16
- orr r3, r3, r3, lsl #16
- str r3, [r0]
- subs r2, r2, #1
- moveq pc, lr
-
-ENTRY(__raw_writesw)
- teq r2, #0 @ do we have to check for the zero len?
- moveq pc, lr
- tst r1, #3
- bne .Loutsw_align
-
- stmfd sp!, {r4, r5, r6, lr}
-
- subs r2, r2, #8
- bmi .Lno_outsw_8
-
-.Loutsw_8_lp: ldmia r1!, {r3, r4, r5, r6}
-
- mov ip, r3, lsl #16
- orr ip, ip, ip, lsr #16
- str ip, [r0]
-
- mov ip, r3, lsr #16
- orr ip, ip, ip, lsl #16
- str ip, [r0]
-
- mov ip, r4, lsl #16
- orr ip, ip, ip, lsr #16
- str ip, [r0]
-
- mov ip, r4, lsr #16
- orr ip, ip, ip, lsl #16
- str ip, [r0]
-
- mov ip, r5, lsl #16
- orr ip, ip, ip, lsr #16
- str ip, [r0]
-
- mov ip, r5, lsr #16
- orr ip, ip, ip, lsl #16
- str ip, [r0]
-
- mov ip, r6, lsl #16
- orr ip, ip, ip, lsr #16
- str ip, [r0]
-
- mov ip, r6, lsr #16
- orr ip, ip, ip, lsl #16
- str ip, [r0]
-
- subs r2, r2, #8
- bpl .Loutsw_8_lp
-
- tst r2, #7
- ldmeqfd sp!, {r4, r5, r6, pc}
-
-.Lno_outsw_8: tst r2, #4
- beq .Lno_outsw_4
-
- ldmia r1!, {r3, r4}
-
- mov ip, r3, lsl #16
- orr ip, ip, ip, lsr #16
- str ip, [r0]
-
- mov ip, r3, lsr #16
- orr ip, ip, ip, lsl #16
- str ip, [r0]
-
- mov ip, r4, lsl #16
- orr ip, ip, ip, lsr #16
- str ip, [r0]
-
- mov ip, r4, lsr #16
- orr ip, ip, ip, lsl #16
- str ip, [r0]
-
-.Lno_outsw_4: tst r2, #2
- beq .Lno_outsw_2
-
- ldr r3, [r1], #4
-
- mov ip, r3, lsl #16
- orr ip, ip, ip, lsr #16
- str ip, [r0]
-
- mov ip, r3, lsr #16
- orr ip, ip, ip, lsl #16
- str ip, [r0]
-
-.Lno_outsw_2: tst r2, #1
-
- ldrne r3, [r1]
-
- movne ip, r3, lsl #16
- orrne ip, ip, ip, lsr #16
- strne ip, [r0]
-
- ldmfd sp!, {r4, r5, r6, pc}
+++ /dev/null
-/*
- * linux/arch/arm/lib/uaccess.S
- *
- * Copyright (C) 1995, 1996,1997,1998 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Routines to block copy data to/from user memory
- * These are highly optimised both for the 4k page size
- * and for various alignments.
- */
-#include <linux/linkage.h>
-#include <asm/assembler.h>
-#include <asm/errno.h>
-#include <asm/domain.h>
-
- .text
-
-#define PAGE_SHIFT 12
-
-/* Prototype: int __copy_to_user(void *to, const char *from, size_t n)
- * Purpose : copy a block to user memory from kernel memory
- * Params : to - user memory
- * : from - kernel memory
- * : n - number of bytes to copy
- * Returns : Number of bytes NOT copied.
- */
-
-.Lc2u_dest_not_aligned:
- rsb ip, ip, #4
- cmp ip, #2
- ldrb r3, [r1], #1
-USER( TUSER( strb) r3, [r0], #1) @ May fault
- ldrgeb r3, [r1], #1
-USER( TUSER( strgeb) r3, [r0], #1) @ May fault
- ldrgtb r3, [r1], #1
-USER( TUSER( strgtb) r3, [r0], #1) @ May fault
- sub r2, r2, ip
- b .Lc2u_dest_aligned
-
-ENTRY(__copy_to_user)
- stmfd sp!, {r2, r4 - r7, lr}
- cmp r2, #4
- blt .Lc2u_not_enough
- ands ip, r0, #3
- bne .Lc2u_dest_not_aligned
-.Lc2u_dest_aligned:
-
- ands ip, r1, #3
- bne .Lc2u_src_not_aligned
-/*
- * Seeing as there has to be at least 8 bytes to copy, we can
- * copy one word, and force a user-mode page fault...
- */
-
-.Lc2u_0fupi: subs r2, r2, #4
- addmi ip, r2, #4
- bmi .Lc2u_0nowords
- ldr r3, [r1], #4
-USER( TUSER( str) r3, [r0], #4) @ May fault
- mov ip, r0, lsl #32 - PAGE_SHIFT @ On each page, use a ld/st??t instruction
- rsb ip, ip, #0
- movs ip, ip, lsr #32 - PAGE_SHIFT
- beq .Lc2u_0fupi
-/*
- * ip = max no. of bytes to copy before needing another "strt" insn
- */
- cmp r2, ip
- movlt ip, r2
- sub r2, r2, ip
- subs ip, ip, #32
- blt .Lc2u_0rem8lp
-
-.Lc2u_0cpy8lp: ldmia r1!, {r3 - r6}
- stmia r0!, {r3 - r6} @ Shouldnt fault
- ldmia r1!, {r3 - r6}
- subs ip, ip, #32
- stmia r0!, {r3 - r6} @ Shouldnt fault
- bpl .Lc2u_0cpy8lp
-
-.Lc2u_0rem8lp: cmn ip, #16
- ldmgeia r1!, {r3 - r6}
- stmgeia r0!, {r3 - r6} @ Shouldnt fault
- tst ip, #8
- ldmneia r1!, {r3 - r4}
- stmneia r0!, {r3 - r4} @ Shouldnt fault
- tst ip, #4
- ldrne r3, [r1], #4
- TUSER( strne) r3, [r0], #4 @ Shouldnt fault
- ands ip, ip, #3
- beq .Lc2u_0fupi
-.Lc2u_0nowords: teq ip, #0
- beq .Lc2u_finished
-.Lc2u_nowords: cmp ip, #2
- ldrb r3, [r1], #1
-USER( TUSER( strb) r3, [r0], #1) @ May fault
- ldrgeb r3, [r1], #1
-USER( TUSER( strgeb) r3, [r0], #1) @ May fault
- ldrgtb r3, [r1], #1
-USER( TUSER( strgtb) r3, [r0], #1) @ May fault
- b .Lc2u_finished
-
-.Lc2u_not_enough:
- movs ip, r2
- bne .Lc2u_nowords
-.Lc2u_finished: mov r0, #0
- ldmfd sp!, {r2, r4 - r7, pc}
-
-.Lc2u_src_not_aligned:
- bic r1, r1, #3
- ldr r7, [r1], #4
- cmp ip, #2
- bgt .Lc2u_3fupi
- beq .Lc2u_2fupi
-.Lc2u_1fupi: subs r2, r2, #4
- addmi ip, r2, #4
- bmi .Lc2u_1nowords
- mov r3, r7, pull #8
- ldr r7, [r1], #4
- orr r3, r3, r7, push #24
-USER( TUSER( str) r3, [r0], #4) @ May fault
- mov ip, r0, lsl #32 - PAGE_SHIFT
- rsb ip, ip, #0
- movs ip, ip, lsr #32 - PAGE_SHIFT
- beq .Lc2u_1fupi
- cmp r2, ip
- movlt ip, r2
- sub r2, r2, ip
- subs ip, ip, #16
- blt .Lc2u_1rem8lp
-
-.Lc2u_1cpy8lp: mov r3, r7, pull #8
- ldmia r1!, {r4 - r7}
- subs ip, ip, #16
- orr r3, r3, r4, push #24
- mov r4, r4, pull #8
- orr r4, r4, r5, push #24
- mov r5, r5, pull #8
- orr r5, r5, r6, push #24
- mov r6, r6, pull #8
- orr r6, r6, r7, push #24
- stmia r0!, {r3 - r6} @ Shouldnt fault
- bpl .Lc2u_1cpy8lp
-
-.Lc2u_1rem8lp: tst ip, #8
- movne r3, r7, pull #8
- ldmneia r1!, {r4, r7}
- orrne r3, r3, r4, push #24
- movne r4, r4, pull #8
- orrne r4, r4, r7, push #24
- stmneia r0!, {r3 - r4} @ Shouldnt fault
- tst ip, #4
- movne r3, r7, pull #8
- ldrne r7, [r1], #4
- orrne r3, r3, r7, push #24
- TUSER( strne) r3, [r0], #4 @ Shouldnt fault
- ands ip, ip, #3
- beq .Lc2u_1fupi
-.Lc2u_1nowords: mov r3, r7, get_byte_1
- teq ip, #0
- beq .Lc2u_finished
- cmp ip, #2
-USER( TUSER( strb) r3, [r0], #1) @ May fault
- movge r3, r7, get_byte_2
-USER( TUSER( strgeb) r3, [r0], #1) @ May fault
- movgt r3, r7, get_byte_3
-USER( TUSER( strgtb) r3, [r0], #1) @ May fault
- b .Lc2u_finished
-
-.Lc2u_2fupi: subs r2, r2, #4
- addmi ip, r2, #4
- bmi .Lc2u_2nowords
- mov r3, r7, pull #16
- ldr r7, [r1], #4
- orr r3, r3, r7, push #16
-USER( TUSER( str) r3, [r0], #4) @ May fault
- mov ip, r0, lsl #32 - PAGE_SHIFT
- rsb ip, ip, #0
- movs ip, ip, lsr #32 - PAGE_SHIFT
- beq .Lc2u_2fupi
- cmp r2, ip
- movlt ip, r2
- sub r2, r2, ip
- subs ip, ip, #16
- blt .Lc2u_2rem8lp
-
-.Lc2u_2cpy8lp: mov r3, r7, pull #16
- ldmia r1!, {r4 - r7}
- subs ip, ip, #16
- orr r3, r3, r4, push #16
- mov r4, r4, pull #16
- orr r4, r4, r5, push #16
- mov r5, r5, pull #16
- orr r5, r5, r6, push #16
- mov r6, r6, pull #16
- orr r6, r6, r7, push #16
- stmia r0!, {r3 - r6} @ Shouldnt fault
- bpl .Lc2u_2cpy8lp
-
-.Lc2u_2rem8lp: tst ip, #8
- movne r3, r7, pull #16
- ldmneia r1!, {r4, r7}
- orrne r3, r3, r4, push #16
- movne r4, r4, pull #16
- orrne r4, r4, r7, push #16
- stmneia r0!, {r3 - r4} @ Shouldnt fault
- tst ip, #4
- movne r3, r7, pull #16
- ldrne r7, [r1], #4
- orrne r3, r3, r7, push #16
- TUSER( strne) r3, [r0], #4 @ Shouldnt fault
- ands ip, ip, #3
- beq .Lc2u_2fupi
-.Lc2u_2nowords: mov r3, r7, get_byte_2
- teq ip, #0
- beq .Lc2u_finished
- cmp ip, #2
-USER( TUSER( strb) r3, [r0], #1) @ May fault
- movge r3, r7, get_byte_3
-USER( TUSER( strgeb) r3, [r0], #1) @ May fault
- ldrgtb r3, [r1], #0
-USER( TUSER( strgtb) r3, [r0], #1) @ May fault
- b .Lc2u_finished
-
-.Lc2u_3fupi: subs r2, r2, #4
- addmi ip, r2, #4
- bmi .Lc2u_3nowords
- mov r3, r7, pull #24
- ldr r7, [r1], #4
- orr r3, r3, r7, push #8
-USER( TUSER( str) r3, [r0], #4) @ May fault
- mov ip, r0, lsl #32 - PAGE_SHIFT
- rsb ip, ip, #0
- movs ip, ip, lsr #32 - PAGE_SHIFT
- beq .Lc2u_3fupi
- cmp r2, ip
- movlt ip, r2
- sub r2, r2, ip
- subs ip, ip, #16
- blt .Lc2u_3rem8lp
-
-.Lc2u_3cpy8lp: mov r3, r7, pull #24
- ldmia r1!, {r4 - r7}
- subs ip, ip, #16
- orr r3, r3, r4, push #8
- mov r4, r4, pull #24
- orr r4, r4, r5, push #8
- mov r5, r5, pull #24
- orr r5, r5, r6, push #8
- mov r6, r6, pull #24
- orr r6, r6, r7, push #8
- stmia r0!, {r3 - r6} @ Shouldnt fault
- bpl .Lc2u_3cpy8lp
-
-.Lc2u_3rem8lp: tst ip, #8
- movne r3, r7, pull #24
- ldmneia r1!, {r4, r7}
- orrne r3, r3, r4, push #8
- movne r4, r4, pull #24
- orrne r4, r4, r7, push #8
- stmneia r0!, {r3 - r4} @ Shouldnt fault
- tst ip, #4
- movne r3, r7, pull #24
- ldrne r7, [r1], #4
- orrne r3, r3, r7, push #8
- TUSER( strne) r3, [r0], #4 @ Shouldnt fault
- ands ip, ip, #3
- beq .Lc2u_3fupi
-.Lc2u_3nowords: mov r3, r7, get_byte_3
- teq ip, #0
- beq .Lc2u_finished
- cmp ip, #2
-USER( TUSER( strb) r3, [r0], #1) @ May fault
- ldrgeb r3, [r1], #1
-USER( TUSER( strgeb) r3, [r0], #1) @ May fault
- ldrgtb r3, [r1], #0
-USER( TUSER( strgtb) r3, [r0], #1) @ May fault
- b .Lc2u_finished
-ENDPROC(__copy_to_user)
-
- .pushsection .fixup,"ax"
- .align 0
-9001: ldmfd sp!, {r0, r4 - r7, pc}
- .popsection
-
-/* Prototype: unsigned long __copy_from_user(void *to,const void *from,unsigned long n);
- * Purpose : copy a block from user memory to kernel memory
- * Params : to - kernel memory
- * : from - user memory
- * : n - number of bytes to copy
- * Returns : Number of bytes NOT copied.
- */
-.Lcfu_dest_not_aligned:
- rsb ip, ip, #4
- cmp ip, #2
-USER( TUSER( ldrb) r3, [r1], #1) @ May fault
- strb r3, [r0], #1
-USER( TUSER( ldrgeb) r3, [r1], #1) @ May fault
- strgeb r3, [r0], #1
-USER( TUSER( ldrgtb) r3, [r1], #1) @ May fault
- strgtb r3, [r0], #1
- sub r2, r2, ip
- b .Lcfu_dest_aligned
-
-ENTRY(__copy_from_user)
- stmfd sp!, {r0, r2, r4 - r7, lr}
- cmp r2, #4
- blt .Lcfu_not_enough
- ands ip, r0, #3
- bne .Lcfu_dest_not_aligned
-.Lcfu_dest_aligned:
- ands ip, r1, #3
- bne .Lcfu_src_not_aligned
-
-/*
- * Seeing as there has to be at least 8 bytes to copy, we can
- * copy one word, and force a user-mode page fault...
- */
-
-.Lcfu_0fupi: subs r2, r2, #4
- addmi ip, r2, #4
- bmi .Lcfu_0nowords
-USER( TUSER( ldr) r3, [r1], #4)
- str r3, [r0], #4
- mov ip, r1, lsl #32 - PAGE_SHIFT @ On each page, use a ld/st??t instruction
- rsb ip, ip, #0
- movs ip, ip, lsr #32 - PAGE_SHIFT
- beq .Lcfu_0fupi
-/*
- * ip = max no. of bytes to copy before needing another "strt" insn
- */
- cmp r2, ip
- movlt ip, r2
- sub r2, r2, ip
- subs ip, ip, #32
- blt .Lcfu_0rem8lp
-
-.Lcfu_0cpy8lp: ldmia r1!, {r3 - r6} @ Shouldnt fault
- stmia r0!, {r3 - r6}
- ldmia r1!, {r3 - r6} @ Shouldnt fault
- subs ip, ip, #32
- stmia r0!, {r3 - r6}
- bpl .Lcfu_0cpy8lp
-
-.Lcfu_0rem8lp: cmn ip, #16
- ldmgeia r1!, {r3 - r6} @ Shouldnt fault
- stmgeia r0!, {r3 - r6}
- tst ip, #8
- ldmneia r1!, {r3 - r4} @ Shouldnt fault
- stmneia r0!, {r3 - r4}
- tst ip, #4
- TUSER( ldrne) r3, [r1], #4 @ Shouldnt fault
- strne r3, [r0], #4
- ands ip, ip, #3
- beq .Lcfu_0fupi
-.Lcfu_0nowords: teq ip, #0
- beq .Lcfu_finished
-.Lcfu_nowords: cmp ip, #2
-USER( TUSER( ldrb) r3, [r1], #1) @ May fault
- strb r3, [r0], #1
-USER( TUSER( ldrgeb) r3, [r1], #1) @ May fault
- strgeb r3, [r0], #1
-USER( TUSER( ldrgtb) r3, [r1], #1) @ May fault
- strgtb r3, [r0], #1
- b .Lcfu_finished
-
-.Lcfu_not_enough:
- movs ip, r2
- bne .Lcfu_nowords
-.Lcfu_finished: mov r0, #0
- add sp, sp, #8
- ldmfd sp!, {r4 - r7, pc}
-
-.Lcfu_src_not_aligned:
- bic r1, r1, #3
-USER( TUSER( ldr) r7, [r1], #4) @ May fault
- cmp ip, #2
- bgt .Lcfu_3fupi
- beq .Lcfu_2fupi
-.Lcfu_1fupi: subs r2, r2, #4
- addmi ip, r2, #4
- bmi .Lcfu_1nowords
- mov r3, r7, pull #8
-USER( TUSER( ldr) r7, [r1], #4) @ May fault
- orr r3, r3, r7, push #24
- str r3, [r0], #4
- mov ip, r1, lsl #32 - PAGE_SHIFT
- rsb ip, ip, #0
- movs ip, ip, lsr #32 - PAGE_SHIFT
- beq .Lcfu_1fupi
- cmp r2, ip
- movlt ip, r2
- sub r2, r2, ip
- subs ip, ip, #16
- blt .Lcfu_1rem8lp
-
-.Lcfu_1cpy8lp: mov r3, r7, pull #8
- ldmia r1!, {r4 - r7} @ Shouldnt fault
- subs ip, ip, #16
- orr r3, r3, r4, push #24
- mov r4, r4, pull #8
- orr r4, r4, r5, push #24
- mov r5, r5, pull #8
- orr r5, r5, r6, push #24
- mov r6, r6, pull #8
- orr r6, r6, r7, push #24
- stmia r0!, {r3 - r6}
- bpl .Lcfu_1cpy8lp
-
-.Lcfu_1rem8lp: tst ip, #8
- movne r3, r7, pull #8
- ldmneia r1!, {r4, r7} @ Shouldnt fault
- orrne r3, r3, r4, push #24
- movne r4, r4, pull #8
- orrne r4, r4, r7, push #24
- stmneia r0!, {r3 - r4}
- tst ip, #4
- movne r3, r7, pull #8
-USER( TUSER( ldrne) r7, [r1], #4) @ May fault
- orrne r3, r3, r7, push #24
- strne r3, [r0], #4
- ands ip, ip, #3
- beq .Lcfu_1fupi
-.Lcfu_1nowords: mov r3, r7, get_byte_1
- teq ip, #0
- beq .Lcfu_finished
- cmp ip, #2
- strb r3, [r0], #1
- movge r3, r7, get_byte_2
- strgeb r3, [r0], #1
- movgt r3, r7, get_byte_3
- strgtb r3, [r0], #1
- b .Lcfu_finished
-
-.Lcfu_2fupi: subs r2, r2, #4
- addmi ip, r2, #4
- bmi .Lcfu_2nowords
- mov r3, r7, pull #16
-USER( TUSER( ldr) r7, [r1], #4) @ May fault
- orr r3, r3, r7, push #16
- str r3, [r0], #4
- mov ip, r1, lsl #32 - PAGE_SHIFT
- rsb ip, ip, #0
- movs ip, ip, lsr #32 - PAGE_SHIFT
- beq .Lcfu_2fupi
- cmp r2, ip
- movlt ip, r2
- sub r2, r2, ip
- subs ip, ip, #16
- blt .Lcfu_2rem8lp
-
-
-.Lcfu_2cpy8lp: mov r3, r7, pull #16
- ldmia r1!, {r4 - r7} @ Shouldnt fault
- subs ip, ip, #16
- orr r3, r3, r4, push #16
- mov r4, r4, pull #16
- orr r4, r4, r5, push #16
- mov r5, r5, pull #16
- orr r5, r5, r6, push #16
- mov r6, r6, pull #16
- orr r6, r6, r7, push #16
- stmia r0!, {r3 - r6}
- bpl .Lcfu_2cpy8lp
-
-.Lcfu_2rem8lp: tst ip, #8
- movne r3, r7, pull #16
- ldmneia r1!, {r4, r7} @ Shouldnt fault
- orrne r3, r3, r4, push #16
- movne r4, r4, pull #16
- orrne r4, r4, r7, push #16
- stmneia r0!, {r3 - r4}
- tst ip, #4
- movne r3, r7, pull #16
-USER( TUSER( ldrne) r7, [r1], #4) @ May fault
- orrne r3, r3, r7, push #16
- strne r3, [r0], #4
- ands ip, ip, #3
- beq .Lcfu_2fupi
-.Lcfu_2nowords: mov r3, r7, get_byte_2
- teq ip, #0
- beq .Lcfu_finished
- cmp ip, #2
- strb r3, [r0], #1
- movge r3, r7, get_byte_3
- strgeb r3, [r0], #1
-USER( TUSER( ldrgtb) r3, [r1], #0) @ May fault
- strgtb r3, [r0], #1
- b .Lcfu_finished
-
-.Lcfu_3fupi: subs r2, r2, #4
- addmi ip, r2, #4
- bmi .Lcfu_3nowords
- mov r3, r7, pull #24
-USER( TUSER( ldr) r7, [r1], #4) @ May fault
- orr r3, r3, r7, push #8
- str r3, [r0], #4
- mov ip, r1, lsl #32 - PAGE_SHIFT
- rsb ip, ip, #0
- movs ip, ip, lsr #32 - PAGE_SHIFT
- beq .Lcfu_3fupi
- cmp r2, ip
- movlt ip, r2
- sub r2, r2, ip
- subs ip, ip, #16
- blt .Lcfu_3rem8lp
-
-.Lcfu_3cpy8lp: mov r3, r7, pull #24
- ldmia r1!, {r4 - r7} @ Shouldnt fault
- orr r3, r3, r4, push #8
- mov r4, r4, pull #24
- orr r4, r4, r5, push #8
- mov r5, r5, pull #24
- orr r5, r5, r6, push #8
- mov r6, r6, pull #24
- orr r6, r6, r7, push #8
- stmia r0!, {r3 - r6}
- subs ip, ip, #16
- bpl .Lcfu_3cpy8lp
-
-.Lcfu_3rem8lp: tst ip, #8
- movne r3, r7, pull #24
- ldmneia r1!, {r4, r7} @ Shouldnt fault
- orrne r3, r3, r4, push #8
- movne r4, r4, pull #24
- orrne r4, r4, r7, push #8
- stmneia r0!, {r3 - r4}
- tst ip, #4
- movne r3, r7, pull #24
-USER( TUSER( ldrne) r7, [r1], #4) @ May fault
- orrne r3, r3, r7, push #8
- strne r3, [r0], #4
- ands ip, ip, #3
- beq .Lcfu_3fupi
-.Lcfu_3nowords: mov r3, r7, get_byte_3
- teq ip, #0
- beq .Lcfu_finished
- cmp ip, #2
- strb r3, [r0], #1
-USER( TUSER( ldrgeb) r3, [r1], #1) @ May fault
- strgeb r3, [r0], #1
-USER( TUSER( ldrgtb) r3, [r1], #1) @ May fault
- strgtb r3, [r0], #1
- b .Lcfu_finished
-ENDPROC(__copy_from_user)
-
- .pushsection .fixup,"ax"
- .align 0
- /*
- * We took an exception. r0 contains a pointer to
- * the byte not copied.
- */
-9001: ldr r2, [sp], #4 @ void *to
- sub r2, r0, r2 @ bytes copied
- ldr r1, [sp], #4 @ unsigned long count
- subs r4, r1, r2 @ bytes left to copy
- movne r1, r4
- blne __memzero
- mov r0, r4
- ldmfd sp!, {r4 - r7, pc}
- .popsection
-
# which CPUs we support in the kernel image, and the compiler instruction
# optimiser behaviour.
-# ARM610
-config CPU_ARM610
- bool "Support ARM610 processor" if ARCH_RPC
- select CPU_32v3
- select CPU_CACHE_V3
- select CPU_CACHE_VIVT
- select CPU_CP15_MMU
- select CPU_COPY_V3 if MMU
- select CPU_TLB_V3 if MMU
- select CPU_PABRT_LEGACY
- help
- The ARM610 is the successor to the ARM3 processor
- and was produced by VLSI Technology Inc.
-
- Say Y if you want support for the ARM610 processor.
- Otherwise, say N.
-
# ARM7TDMI
config CPU_ARM7TDMI
bool "Support ARM7TDMI processor"
Say Y if you want support for the ARM7TDMI processor.
Otherwise, say N.
-# ARM710
-config CPU_ARM710
- bool "Support ARM710 processor" if ARCH_RPC
- select CPU_32v3
- select CPU_CACHE_V3
- select CPU_CACHE_VIVT
- select CPU_CP15_MMU
- select CPU_COPY_V3 if MMU
- select CPU_TLB_V3 if MMU
- select CPU_PABRT_LEGACY
- help
- A 32-bit RISC microprocessor based on the ARM7 processor core
- designed by Advanced RISC Machines Ltd. The ARM710 is the
- successor to the ARM610 processor. It was released in
- July 1994 by VLSI Technology Inc.
-
- Say Y if you want support for the ARM710 processor.
- Otherwise, say N.
-
# ARM720T
config CPU_ARM720T
bool "Support ARM720T processor" if ARCH_INTEGRATOR
if MMU
# The copy-page model
-config CPU_COPY_V3
- bool
-
config CPU_COPY_V4WT
bool
bool
# This selects the TLB model
-config CPU_TLB_V3
- bool
- help
- ARM Architecture Version 3 TLB.
-
config CPU_TLB_V4WT
bool
help
config CPU_ICACHE_DISABLE
bool "Disable I-Cache (I-bit)"
- depends on CPU_CP15 && !(CPU_ARM610 || CPU_ARM710 || CPU_ARM720T || CPU_ARM740T || CPU_XSCALE || CPU_XSC3)
+ depends on CPU_CP15 && !(CPU_ARM720T || CPU_ARM740T || CPU_XSCALE || CPU_XSC3)
help
Say Y here to disable the processor instruction cache. Unless
you have a reason not to or are unsure, say N.
AFLAGS_cache-v6.o :=-Wa,-march=armv6
AFLAGS_cache-v7.o :=-Wa,-march=armv7-a
-obj-$(CONFIG_CPU_COPY_V3) += copypage-v3.o
obj-$(CONFIG_CPU_COPY_V4WT) += copypage-v4wt.o
obj-$(CONFIG_CPU_COPY_V4WB) += copypage-v4wb.o
obj-$(CONFIG_CPU_COPY_FEROCEON) += copypage-feroceon.o
obj-$(CONFIG_CPU_XSC3) += copypage-xsc3.o
obj-$(CONFIG_CPU_COPY_FA) += copypage-fa.o
-obj-$(CONFIG_CPU_TLB_V3) += tlb-v3.o
obj-$(CONFIG_CPU_TLB_V4WT) += tlb-v4.o
obj-$(CONFIG_CPU_TLB_V4WB) += tlb-v4wb.o
obj-$(CONFIG_CPU_TLB_V4WBI) += tlb-v4wbi.o
AFLAGS_tlb-v6.o :=-Wa,-march=armv6
AFLAGS_tlb-v7.o :=-Wa,-march=armv7-a
-obj-$(CONFIG_CPU_ARM610) += proc-arm6_7.o
-obj-$(CONFIG_CPU_ARM710) += proc-arm6_7.o
obj-$(CONFIG_CPU_ARM7TDMI) += proc-arm7tdmi.o
obj-$(CONFIG_CPU_ARM720T) += proc-arm720.o
obj-$(CONFIG_CPU_ARM740T) += proc-arm740.o
+++ /dev/null
-/*
- * linux/arch/arm/mm/copypage-v3.c
- *
- * Copyright (C) 1995-1999 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/init.h>
-#include <linux/highmem.h>
-
-/*
- * ARMv3 optimised copy_user_highpage
- *
- * FIXME: do we need to handle cache stuff...
- */
-static void __naked
-v3_copy_user_page(void *kto, const void *kfrom)
-{
- asm("\n\
- stmfd sp!, {r4, lr} @ 2\n\
- mov r2, %2 @ 1\n\
- ldmia %0!, {r3, r4, ip, lr} @ 4+1\n\
-1: stmia %1!, {r3, r4, ip, lr} @ 4\n\
- ldmia %0!, {r3, r4, ip, lr} @ 4+1\n\
- stmia %1!, {r3, r4, ip, lr} @ 4\n\
- ldmia %0!, {r3, r4, ip, lr} @ 4+1\n\
- stmia %1!, {r3, r4, ip, lr} @ 4\n\
- ldmia %0!, {r3, r4, ip, lr} @ 4\n\
- subs r2, r2, #1 @ 1\n\
- stmia %1!, {r3, r4, ip, lr} @ 4\n\
- ldmneia %0!, {r3, r4, ip, lr} @ 4\n\
- bne 1b @ 1\n\
- ldmfd sp!, {r4, pc} @ 3"
- :
- : "r" (kfrom), "r" (kto), "I" (PAGE_SIZE / 64));
-}
-
-void v3_copy_user_highpage(struct page *to, struct page *from,
- unsigned long vaddr, struct vm_area_struct *vma)
-{
- void *kto, *kfrom;
-
- kto = kmap_atomic(to);
- kfrom = kmap_atomic(from);
- v3_copy_user_page(kto, kfrom);
- kunmap_atomic(kfrom);
- kunmap_atomic(kto);
-}
-
-/*
- * ARMv3 optimised clear_user_page
- *
- * FIXME: do we need to handle cache stuff...
- */
-void v3_clear_user_highpage(struct page *page, unsigned long vaddr)
-{
- void *ptr, *kaddr = kmap_atomic(page);
- asm volatile("\n\
- mov r1, %2 @ 1\n\
- mov r2, #0 @ 1\n\
- mov r3, #0 @ 1\n\
- mov ip, #0 @ 1\n\
- mov lr, #0 @ 1\n\
-1: stmia %0!, {r2, r3, ip, lr} @ 4\n\
- stmia %0!, {r2, r3, ip, lr} @ 4\n\
- stmia %0!, {r2, r3, ip, lr} @ 4\n\
- stmia %0!, {r2, r3, ip, lr} @ 4\n\
- subs r1, r1, #1 @ 1\n\
- bne 1b @ 1"
- : "=r" (ptr)
- : "0" (kaddr), "I" (PAGE_SIZE / 64)
- : "r1", "r2", "r3", "ip", "lr");
- kunmap_atomic(kaddr);
-}
-
-struct cpu_user_fns v3_user_fns __initdata = {
- .cpu_clear_user_highpage = v3_clear_user_highpage,
- .cpu_copy_user_highpage = v3_copy_user_highpage,
-};
index = pgd_index(addr);
- /*
- * FIXME: CP15 C1 is write only on ARMv3 architectures.
- */
pgd = cpu_get_pgd() + index;
pgd_k = init_mm.pgd + index;
+++ /dev/null
-/*
- * linux/arch/arm/mm/proc-arm6,7.S
- *
- * Copyright (C) 1997-2000 Russell King
- * hacked for non-paged-MM by Hyok S. Choi, 2003.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * These are the low level assembler for performing cache and TLB
- * functions on the ARM610 & ARM710.
- */
-#include <linux/linkage.h>
-#include <linux/init.h>
-#include <asm/assembler.h>
-#include <asm/asm-offsets.h>
-#include <asm/hwcap.h>
-#include <asm/pgtable-hwdef.h>
-#include <asm/pgtable.h>
-#include <asm/ptrace.h>
-
-#include "proc-macros.S"
-
-ENTRY(cpu_arm6_dcache_clean_area)
-ENTRY(cpu_arm7_dcache_clean_area)
- mov pc, lr
-
-/*
- * Function: arm6_7_data_abort ()
- *
- * Params : r2 = pt_regs
- * : r4 = aborted context pc
- * : r5 = aborted context psr
- *
- * Purpose : obtain information about current aborted instruction
- *
- * Returns : r4-r5, r10-r11, r13 preserved
- */
-
-ENTRY(cpu_arm7_data_abort)
- mrc p15, 0, r1, c5, c0, 0 @ get FSR
- mrc p15, 0, r0, c6, c0, 0 @ get FAR
- ldr r8, [r4] @ read arm instruction
- tst r8, #1 << 20 @ L = 0 -> write?
- orreq r1, r1, #1 << 11 @ yes.
- and r7, r8, #15 << 24
- add pc, pc, r7, lsr #22 @ Now branch to the relevant processing routine
- nop
-
-/* 0 */ b .data_unknown
-/* 1 */ b do_DataAbort @ swp
-/* 2 */ b .data_unknown
-/* 3 */ b .data_unknown
-/* 4 */ b .data_arm_lateldrpostconst @ ldr rd, [rn], #m
-/* 5 */ b .data_arm_lateldrpreconst @ ldr rd, [rn, #m]
-/* 6 */ b .data_arm_lateldrpostreg @ ldr rd, [rn], rm
-/* 7 */ b .data_arm_lateldrprereg @ ldr rd, [rn, rm]
-/* 8 */ b .data_arm_ldmstm @ ldm*a rn, <rlist>
-/* 9 */ b .data_arm_ldmstm @ ldm*b rn, <rlist>
-/* a */ b .data_unknown
-/* b */ b .data_unknown
-/* c */ b do_DataAbort @ ldc rd, [rn], #m @ Same as ldr rd, [rn], #m
-/* d */ b do_DataAbort @ ldc rd, [rn, #m]
-/* e */ b .data_unknown
-/* f */
-.data_unknown: @ Part of jumptable
- mov r0, r4
- mov r1, r8
- b baddataabort
-
-ENTRY(cpu_arm6_data_abort)
- mrc p15, 0, r1, c5, c0, 0 @ get FSR
- mrc p15, 0, r0, c6, c0, 0 @ get FAR
- ldr r8, [r4] @ read arm instruction
- tst r8, #1 << 20 @ L = 0 -> write?
- orreq r1, r1, #1 << 11 @ yes.
- and r7, r8, #14 << 24
- teq r7, #8 << 24 @ was it ldm/stm
- bne do_DataAbort
-
-.data_arm_ldmstm:
- tst r8, #1 << 21 @ check writeback bit
- beq do_DataAbort @ no writeback -> no fixup
- mov r7, #0x11
- orr r7, r7, #0x1100
- and r6, r8, r7
- and r9, r8, r7, lsl #1
- add r6, r6, r9, lsr #1
- and r9, r8, r7, lsl #2
- add r6, r6, r9, lsr #2
- and r9, r8, r7, lsl #3
- add r6, r6, r9, lsr #3
- add r6, r6, r6, lsr #8
- add r6, r6, r6, lsr #4
- and r6, r6, #15 @ r6 = no. of registers to transfer.
- and r9, r8, #15 << 16 @ Extract 'n' from instruction
- ldr r7, [r2, r9, lsr #14] @ Get register 'Rn'
- tst r8, #1 << 23 @ Check U bit
- subne r7, r7, r6, lsl #2 @ Undo increment
- addeq r7, r7, r6, lsl #2 @ Undo decrement
- str r7, [r2, r9, lsr #14] @ Put register 'Rn'
- b do_DataAbort
-
-.data_arm_apply_r6_and_rn:
- and r9, r8, #15 << 16 @ Extract 'n' from instruction
- ldr r7, [r2, r9, lsr #14] @ Get register 'Rn'
- tst r8, #1 << 23 @ Check U bit
- subne r7, r7, r6 @ Undo incrmenet
- addeq r7, r7, r6 @ Undo decrement
- str r7, [r2, r9, lsr #14] @ Put register 'Rn'
- b do_DataAbort
-
-.data_arm_lateldrpreconst:
- tst r8, #1 << 21 @ check writeback bit
- beq do_DataAbort @ no writeback -> no fixup
-.data_arm_lateldrpostconst:
- movs r6, r8, lsl #20 @ Get offset
- beq do_DataAbort @ zero -> no fixup
- and r9, r8, #15 << 16 @ Extract 'n' from instruction
- ldr r7, [r2, r9, lsr #14] @ Get register 'Rn'
- tst r8, #1 << 23 @ Check U bit
- subne r7, r7, r6, lsr #20 @ Undo increment
- addeq r7, r7, r6, lsr #20 @ Undo decrement
- str r7, [r2, r9, lsr #14] @ Put register 'Rn'
- b do_DataAbort
-
-.data_arm_lateldrprereg:
- tst r8, #1 << 21 @ check writeback bit
- beq do_DataAbort @ no writeback -> no fixup
-.data_arm_lateldrpostreg:
- and r7, r8, #15 @ Extract 'm' from instruction
- ldr r6, [r2, r7, lsl #2] @ Get register 'Rm'
- mov r9, r8, lsr #7 @ get shift count
- ands r9, r9, #31
- and r7, r8, #0x70 @ get shift type
- orreq r7, r7, #8 @ shift count = 0
- add pc, pc, r7
- nop
-
- mov r6, r6, lsl r9 @ 0: LSL #!0
- b .data_arm_apply_r6_and_rn
- b .data_arm_apply_r6_and_rn @ 1: LSL #0
- nop
- b .data_unknown @ 2: MUL?
- nop
- b .data_unknown @ 3: MUL?
- nop
- mov r6, r6, lsr r9 @ 4: LSR #!0
- b .data_arm_apply_r6_and_rn
- mov r6, r6, lsr #32 @ 5: LSR #32
- b .data_arm_apply_r6_and_rn
- b .data_unknown @ 6: MUL?
- nop
- b .data_unknown @ 7: MUL?
- nop
- mov r6, r6, asr r9 @ 8: ASR #!0
- b .data_arm_apply_r6_and_rn
- mov r6, r6, asr #32 @ 9: ASR #32
- b .data_arm_apply_r6_and_rn
- b .data_unknown @ A: MUL?
- nop
- b .data_unknown @ B: MUL?
- nop
- mov r6, r6, ror r9 @ C: ROR #!0
- b .data_arm_apply_r6_and_rn
- mov r6, r6, rrx @ D: RRX
- b .data_arm_apply_r6_and_rn
- b .data_unknown @ E: MUL?
- nop
- b .data_unknown @ F: MUL?
-
-/*
- * Function: arm6_7_proc_init (void)
- * : arm6_7_proc_fin (void)
- *
- * Notes : This processor does not require these
- */
-ENTRY(cpu_arm6_proc_init)
-ENTRY(cpu_arm7_proc_init)
- mov pc, lr
-
-ENTRY(cpu_arm6_proc_fin)
-ENTRY(cpu_arm7_proc_fin)
- mov r0, #0x31 @ ....S..DP...M
- mcr p15, 0, r0, c1, c0, 0 @ disable caches
- mov pc, lr
-
-ENTRY(cpu_arm6_do_idle)
-ENTRY(cpu_arm7_do_idle)
- mov pc, lr
-
-/*
- * Function: arm6_7_switch_mm(unsigned long pgd_phys)
- * Params : pgd_phys Physical address of page table
- * Purpose : Perform a task switch, saving the old processes state, and restoring
- * the new.
- */
-ENTRY(cpu_arm6_switch_mm)
-ENTRY(cpu_arm7_switch_mm)
-#ifdef CONFIG_MMU
- mov r1, #0
- mcr p15, 0, r1, c7, c0, 0 @ flush cache
- mcr p15, 0, r0, c2, c0, 0 @ update page table ptr
- mcr p15, 0, r1, c5, c0, 0 @ flush TLBs
-#endif
- mov pc, lr
-
-/*
- * Function: arm6_7_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext)
- * Params : r0 = Address to set
- * : r1 = value to set
- * Purpose : Set a PTE and flush it out of any WB cache
- */
- .align 5
-ENTRY(cpu_arm6_set_pte_ext)
-ENTRY(cpu_arm7_set_pte_ext)
-#ifdef CONFIG_MMU
- armv3_set_pte_ext wc_disable=0
-#endif /* CONFIG_MMU */
- mov pc, lr
-
-/*
- * Function: _arm6_7_reset
- * Params : r0 = address to jump to
- * Notes : This sets up everything for a reset
- */
- .pushsection .idmap.text, "ax"
-ENTRY(cpu_arm6_reset)
-ENTRY(cpu_arm7_reset)
- mov r1, #0
- mcr p15, 0, r1, c7, c0, 0 @ flush cache
-#ifdef CONFIG_MMU
- mcr p15, 0, r1, c5, c0, 0 @ flush TLB
-#endif
- mov r1, #0x30
- mcr p15, 0, r1, c1, c0, 0 @ turn off MMU etc
- mov pc, r0
-ENDPROC(cpu_arm6_reset)
-ENDPROC(cpu_arm7_reset)
- .popsection
-
- __CPUINIT
-
- .type __arm6_setup, #function
-__arm6_setup: mov r0, #0
- mcr p15, 0, r0, c7, c0 @ flush caches on v3
-#ifdef CONFIG_MMU
- mcr p15, 0, r0, c5, c0 @ flush TLBs on v3
- mov r0, #0x3d @ . ..RS BLDP WCAM
- orr r0, r0, #0x100 @ . ..01 0011 1101
-#else
- mov r0, #0x3c @ . ..RS BLDP WCA.
-#endif
- mov pc, lr
- .size __arm6_setup, . - __arm6_setup
-
- .type __arm7_setup, #function
-__arm7_setup: mov r0, #0
- mcr p15, 0, r0, c7, c0 @ flush caches on v3
-#ifdef CONFIG_MMU
- mcr p15, 0, r0, c5, c0 @ flush TLBs on v3
- mcr p15, 0, r0, c3, c0 @ load domain access register
- mov r0, #0x7d @ . ..RS BLDP WCAM
- orr r0, r0, #0x100 @ . ..01 0111 1101
-#else
- mov r0, #0x7c @ . ..RS BLDP WCA.
-#endif
- mov pc, lr
- .size __arm7_setup, . - __arm7_setup
-
- __INITDATA
-
- @ define struct processor (see <asm/proc-fns.h> and proc-macros.S)
- define_processor_functions arm6, dabort=cpu_arm6_data_abort, pabort=legacy_pabort
- define_processor_functions arm7, dabort=cpu_arm7_data_abort, pabort=legacy_pabort
-
- .section ".rodata"
-
- string cpu_arch_name, "armv3"
- string cpu_elf_name, "v3"
- string cpu_arm6_name, "ARM6"
- string cpu_arm610_name, "ARM610"
- string cpu_arm7_name, "ARM7"
- string cpu_arm710_name, "ARM710"
-
- .align
-
- .section ".proc.info.init", #alloc, #execinstr
-
-.macro arm67_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req, \
- cpu_mm_mmu_flags:req, cpu_flush:req, cpu_proc_funcs:req
- .type __\name\()_proc_info, #object
-__\name\()_proc_info:
- .long \cpu_val
- .long \cpu_mask
- .long \cpu_mm_mmu_flags
- .long PMD_TYPE_SECT | \
- PMD_BIT4 | \
- PMD_SECT_AP_WRITE | \
- PMD_SECT_AP_READ
- b \cpu_flush
- .long cpu_arch_name
- .long cpu_elf_name
- .long HWCAP_SWP | HWCAP_26BIT
- .long \cpu_name
- .long \cpu_proc_funcs
- .long v3_tlb_fns
- .long v3_user_fns
- .long v3_cache_fns
- .size __\name\()_proc_info, . - __\name\()_proc_info
-.endm
-
- arm67_proc_info arm6, 0x41560600, 0xfffffff0, cpu_arm6_name, \
- 0x00000c1e, __arm6_setup, arm6_processor_functions
- arm67_proc_info arm610, 0x41560610, 0xfffffff0, cpu_arm610_name, \
- 0x00000c1e, __arm6_setup, arm6_processor_functions
- arm67_proc_info arm7, 0x41007000, 0xffffff00, cpu_arm7_name, \
- 0x00000c1e, __arm7_setup, arm7_processor_functions
- arm67_proc_info arm710, 0x41007100, 0xfff8ff00, cpu_arm710_name, \
- PMD_TYPE_SECT | \
- PMD_SECT_BUFFERABLE | \
- PMD_SECT_CACHEABLE | \
- PMD_BIT4 | \
- PMD_SECT_AP_WRITE | \
- PMD_SECT_AP_READ, \
- __arm7_setup, arm7_processor_functions
+++ /dev/null
-/*
- * linux/arch/arm/mm/tlbv3.S
- *
- * Copyright (C) 1997-2002 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * ARM architecture version 3 TLB handling functions.
- *
- * Processors: ARM610, ARM710.
- */
-#include <linux/linkage.h>
-#include <linux/init.h>
-#include <asm/asm-offsets.h>
-#include <asm/tlbflush.h>
-#include "proc-macros.S"
-
- .align 5
-/*
- * v3_flush_user_tlb_range(start, end, mm)
- *
- * Invalidate a range of TLB entries in the specified address space.
- *
- * - start - range start address
- * - end - range end address
- * - mm - mm_struct describing address space
- */
- .align 5
-ENTRY(v3_flush_user_tlb_range)
- vma_vm_mm r2, r2
- act_mm r3 @ get current->active_mm
- teq r2, r3 @ == mm ?
- movne pc, lr @ no, we dont do anything
-ENTRY(v3_flush_kern_tlb_range)
- bic r0, r0, #0x0ff
- bic r0, r0, #0xf00
-1: mcr p15, 0, r0, c6, c0, 0 @ invalidate TLB entry
- add r0, r0, #PAGE_SZ
- cmp r0, r1
- blo 1b
- mov pc, lr
-
- __INITDATA
-
- /* define struct cpu_tlb_fns (see <asm/tlbflush.h> and proc-macros.S) */
- define_tlb_functions v3, v3_tlb_flags
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