diff options
Diffstat (limited to 'arch/arm/mm')
-rw-r--r-- | arch/arm/mm/Kconfig | 46 | ||||
-rw-r--r-- | arch/arm/mm/Makefile | 4 | ||||
-rw-r--r-- | arch/arm/mm/copypage-v3.c | 81 | ||||
-rw-r--r-- | arch/arm/mm/fault.c | 3 | ||||
-rw-r--r-- | arch/arm/mm/proc-arm6_7.S | 327 | ||||
-rw-r--r-- | arch/arm/mm/tlb-v3.S | 48 |
6 files changed, 1 insertions, 508 deletions
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index 7c8a7d8467b..101b9681c08 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 bca7e61928c..8a9c4cb50a9 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 3935bddd476..00000000000 --- 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 <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, -}; diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c index 5bb48356d21..c3bd8345022 100644 --- a/arch/arm/mm/fault.c +++ b/arch/arm/mm/fault.c @@ -432,9 +432,6 @@ 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 4fbeb5b8e6c..00000000000 --- 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 <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 diff --git a/arch/arm/mm/tlb-v3.S b/arch/arm/mm/tlb-v3.S deleted file mode 100644 index d253995ec4c..00000000000 --- 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 <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 |