From 357c9c1f07d4546bc3fbc0fd1044d96b114d14ed Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 4 May 2012 12:04:26 +0100 Subject: [PATCH] ARM: Remove support for ARMv3 ARM610 and ARM710 CPUs This patch removes support for ARMv3 CPUs, which haven't worked properly for quite some time (see the FIXME comment in arch/arm/mm/fault.c). The only V3 parts left is the cache model for ARMv3, which is needed for some odd reason by ARM740T CPUs, and being able to build with -march=armv3, which is required for the RiscPC platform due to its bus structure. Acked-by: Will Deacon Acked-by: Jean-Christophe PLAGNIOL-VILLARD Signed-off-by: Russell King --- arch/arm/Makefile | 2 - arch/arm/configs/rpc_defconfig | 2 - arch/arm/include/asm/glue-df.h | 8 - arch/arm/include/asm/glue-proc.h | 18 - arch/arm/include/asm/page.h | 9 - arch/arm/include/asm/tlbflush.h | 21 +- arch/arm/kernel/entry-armv.S | 4 - arch/arm/kernel/entry-common.S | 28 -- arch/arm/lib/Makefile | 23 +- arch/arm/lib/io-readsw-armv3.S | 106 ------ arch/arm/lib/io-writesw-armv3.S | 126 ------- arch/arm/lib/uaccess.S | 564 ------------------------------- arch/arm/mm/Kconfig | 46 +-- arch/arm/mm/Makefile | 4 - arch/arm/mm/copypage-v3.c | 81 ----- arch/arm/mm/fault.c | 3 - arch/arm/mm/proc-arm6_7.S | 327 ------------------ arch/arm/mm/tlb-v3.S | 48 --- 18 files changed, 6 insertions(+), 1414 deletions(-) delete mode 100644 arch/arm/lib/io-readsw-armv3.S delete mode 100644 arch/arm/lib/io-writesw-armv3.S delete mode 100644 arch/arm/lib/uaccess.S delete mode 100644 arch/arm/mm/copypage-v3.c delete mode 100644 arch/arm/mm/proc-arm6_7.S delete mode 100644 arch/arm/mm/tlb-v3.S diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 047a20780fc1..aaf96bccd4a0 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -70,8 +70,6 @@ arch-$(CONFIG_CPU_32v4) :=-D__LINUX_ARM_ARCH__=4 -march=armv4 arch-$(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 diff --git a/arch/arm/configs/rpc_defconfig b/arch/arm/configs/rpc_defconfig index af278f7a2246..00515ef9782d 100644 --- a/arch/arm/configs/rpc_defconfig +++ b/arch/arm/configs/rpc_defconfig @@ -8,8 +8,6 @@ CONFIG_MODULES=y 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 diff --git a/arch/arm/include/asm/glue-df.h b/arch/arm/include/asm/glue-df.h index 354d571e8bcc..8cacbcda76da 100644 --- a/arch/arm/include/asm/glue-df.h +++ b/arch/arm/include/asm/glue-df.h @@ -31,14 +31,6 @@ #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 diff --git a/arch/arm/include/asm/glue-proc.h b/arch/arm/include/asm/glue-proc.h index e2be7f142668..ac1dd54724b6 100644 --- a/arch/arm/include/asm/glue-proc.h +++ b/arch/arm/include/asm/glue-proc.h @@ -23,15 +23,6 @@ * 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 @@ -41,15 +32,6 @@ # 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 diff --git a/arch/arm/include/asm/page.h b/arch/arm/include/asm/page.h index 5838361c48b3..ecf901902e44 100644 --- a/arch/arm/include/asm/page.h +++ b/arch/arm/include/asm/page.h @@ -34,7 +34,6 @@ * 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 @@ -44,14 +43,6 @@ #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 diff --git a/arch/arm/include/asm/tlbflush.h b/arch/arm/include/asm/tlbflush.h index 85fe61e73202..6e924d3a77eb 100644 --- a/arch/arm/include/asm/tlbflush.h +++ b/arch/arm/include/asm/tlbflush.h @@ -65,21 +65,6 @@ #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 @@ -298,8 +283,7 @@ extern struct cpu_tlb_fns cpu_tlb; * 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 | \ @@ -307,8 +291,7 @@ extern struct cpu_tlb_fns cpu_tlb; 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 & \ diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S index 7fd3ad048da9..437f0c426517 100644 --- a/arch/arm/kernel/entry-armv.S +++ b/arch/arm/kernel/entry-armv.S @@ -556,10 +556,6 @@ call_fpe: #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 diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S index 54ee265dd819..7bd2d3cb8957 100644 --- a/arch/arm/kernel/entry-common.S +++ b/arch/arm/kernel/entry-common.S @@ -335,20 +335,6 @@ ENDPROC(ftrace_stub) *----------------------------------------------------------------------------- */ - /* 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 @@ -379,9 +365,6 @@ ENTRY(vector_swi) 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 @@ -392,26 +375,15 @@ ENTRY(vector_swi) /* * 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 diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile index 0ade0acc1ed9..992769ae2599 100644 --- a/arch/arm/lib/Makefile +++ b/arch/arm/lib/Makefile @@ -17,30 +17,13 @@ lib-y := backtrace.o changebit.o csumipv6.o csumpartial.o \ 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 diff --git a/arch/arm/lib/io-readsw-armv3.S b/arch/arm/lib/io-readsw-armv3.S deleted file mode 100644 index 88487c8c4f23..000000000000 --- a/arch/arm/lib/io-readsw-armv3.S +++ /dev/null @@ -1,106 +0,0 @@ -/* - * 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 -#include - -.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} - - diff --git a/arch/arm/lib/io-writesw-armv3.S b/arch/arm/lib/io-writesw-armv3.S deleted file mode 100644 index 49b800419e32..000000000000 --- a/arch/arm/lib/io-writesw-armv3.S +++ /dev/null @@ -1,126 +0,0 @@ -/* - * 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 -#include - -.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} diff --git a/arch/arm/lib/uaccess.S b/arch/arm/lib/uaccess.S deleted file mode 100644 index 5c908b1cb8ed..000000000000 --- a/arch/arm/lib/uaccess.S +++ /dev/null @@ -1,564 +0,0 @@ -/* - * 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 -#include -#include -#include - - .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 - diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index 7c8a7d8467bf..101b9681c08c 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -4,23 +4,6 @@ comment "Processor Type" # 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" @@ -36,25 +19,6 @@ config CPU_ARM7TDMI 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 @@ -530,9 +494,6 @@ config CPU_CACHE_FA if MMU # The copy-page model -config CPU_COPY_V3 - bool - config CPU_COPY_V4WT bool @@ -549,11 +510,6 @@ config CPU_COPY_V6 bool # This selects the TLB model -config CPU_TLB_V3 - bool - help - ARM Architecture Version 3 TLB. - config CPU_TLB_V4WT bool help @@ -731,7 +687,7 @@ config CPU_HIGH_VECTOR 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. diff --git a/arch/arm/mm/Makefile b/arch/arm/mm/Makefile index bca7e61928c7..8a9c4cb50a93 100644 --- a/arch/arm/mm/Makefile +++ b/arch/arm/mm/Makefile @@ -44,7 +44,6 @@ obj-$(CONFIG_CPU_CACHE_FA) += cache-fa.o 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 @@ -54,7 +53,6 @@ obj-$(CONFIG_CPU_XSCALE) += copypage-xscale.o obj-$(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-$(CONFIG_CPU_TLB_V4WBI) += tlb-v4wbi.o @@ -66,8 +64,6 @@ obj-$(CONFIG_CPU_TLB_FA) += tlb-fa.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 diff --git a/arch/arm/mm/copypage-v3.c b/arch/arm/mm/copypage-v3.c deleted file mode 100644 index 3935bddd4769..000000000000 --- a/arch/arm/mm/copypage-v3.c +++ /dev/null @@ -1,81 +0,0 @@ -/* - * 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 -#include - -/* - * 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, -}; diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c index f07467533365..84aec37404bc 100644 --- a/arch/arm/mm/fault.c +++ b/arch/arm/mm/fault.c @@ -430,9 +430,6 @@ do_translation_fault(unsigned long addr, unsigned int fsr, index = pgd_index(addr); - /* - * FIXME: CP15 C1 is write only on ARMv3 architectures. - */ pgd = cpu_get_pgd() + index; pgd_k = init_mm.pgd + index; diff --git a/arch/arm/mm/proc-arm6_7.S b/arch/arm/mm/proc-arm6_7.S deleted file mode 100644 index 4fbeb5b8e6c2..000000000000 --- a/arch/arm/mm/proc-arm6_7.S +++ /dev/null @@ -1,327 +0,0 @@ -/* - * 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 -#include -#include -#include -#include -#include -#include -#include - -#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, -/* 9 */ b .data_arm_ldmstm @ ldm*b rn, -/* 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 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 diff --git a/arch/arm/mm/tlb-v3.S b/arch/arm/mm/tlb-v3.S deleted file mode 100644 index d253995ec4ca..000000000000 --- a/arch/arm/mm/tlb-v3.S +++ /dev/null @@ -1,48 +0,0 @@ -/* - * 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 -#include -#include -#include -#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 and proc-macros.S) */ - define_tlb_functions v3, v3_tlb_flags -- 2.20.1