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-rw-r--r--arch/arm/mm/proc-arm6_7.S327
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
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index 4fbeb5b..0000000
--- 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