diff options
Diffstat (limited to 'arch/arm/mm/proc-arm6_7.S')
| -rw-r--r-- | arch/arm/mm/proc-arm6_7.S | 327 |
1 files changed, 0 insertions, 327 deletions
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 <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 |