diff options
Diffstat (limited to 'arch/arm/mm/proc-xscale.S')
| -rw-r--r-- | arch/arm/mm/proc-xscale.S | 125 |
1 files changed, 54 insertions, 71 deletions
diff --git a/arch/arm/mm/proc-xscale.S b/arch/arm/mm/proc-xscale.S index d82590aa71..d8462df802 100644 --- a/arch/arm/mm/proc-xscale.S +++ b/arch/arm/mm/proc-xscale.S @@ -19,6 +19,7 @@ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <linux/pgtable.h> #include <asm/assembler.h> #include <asm/hwcap.h> @@ -111,22 +112,24 @@ clean_addr: .word CLEAN_ADDR * * Nothing too exciting at the moment */ -ENTRY(cpu_xscale_proc_init) +SYM_TYPED_FUNC_START(cpu_xscale_proc_init) @ enable write buffer coalescing. Some bootloader disable it mrc p15, 0, r1, c1, c0, 1 bic r1, r1, #1 mcr p15, 0, r1, c1, c0, 1 ret lr +SYM_FUNC_END(cpu_xscale_proc_init) /* * cpu_xscale_proc_fin() */ -ENTRY(cpu_xscale_proc_fin) +SYM_TYPED_FUNC_START(cpu_xscale_proc_fin) mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1800 @ ...IZ........... bic r0, r0, #0x0006 @ .............CA. mcr p15, 0, r0, c1, c0, 0 @ disable caches ret lr +SYM_FUNC_END(cpu_xscale_proc_fin) /* * cpu_xscale_reset(loc) @@ -141,7 +144,7 @@ ENTRY(cpu_xscale_proc_fin) */ .align 5 .pushsection .idmap.text, "ax" -ENTRY(cpu_xscale_reset) +SYM_TYPED_FUNC_START(cpu_xscale_reset) mov r1, #PSR_F_BIT|PSR_I_BIT|SVC_MODE msr cpsr_c, r1 @ reset CPSR mcr p15, 0, r1, c10, c4, 1 @ unlock I-TLB @@ -159,7 +162,7 @@ ENTRY(cpu_xscale_reset) @ already containing those two last instructions to survive. mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs ret r0 -ENDPROC(cpu_xscale_reset) +SYM_FUNC_END(cpu_xscale_reset) .popsection /* @@ -174,10 +177,11 @@ ENDPROC(cpu_xscale_reset) */ .align 5 -ENTRY(cpu_xscale_do_idle) +SYM_TYPED_FUNC_START(cpu_xscale_do_idle) mov r0, #1 mcr p14, 0, r0, c7, c0, 0 @ Go to IDLE ret lr +SYM_FUNC_END(cpu_xscale_do_idle) /* ================================= CACHE ================================ */ @@ -186,11 +190,11 @@ ENTRY(cpu_xscale_do_idle) * * Unconditionally clean and invalidate the entire icache. */ -ENTRY(xscale_flush_icache_all) +SYM_TYPED_FUNC_START(xscale_flush_icache_all) mov r0, #0 mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache ret lr -ENDPROC(xscale_flush_icache_all) +SYM_FUNC_END(xscale_flush_icache_all) /* * flush_user_cache_all() @@ -198,15 +202,14 @@ ENDPROC(xscale_flush_icache_all) * Invalidate all cache entries in a particular address * space. */ -ENTRY(xscale_flush_user_cache_all) - /* FALLTHROUGH */ +SYM_FUNC_ALIAS(xscale_flush_user_cache_all, xscale_flush_kern_cache_all) /* * flush_kern_cache_all() * * Clean and invalidate the entire cache. */ -ENTRY(xscale_flush_kern_cache_all) +SYM_TYPED_FUNC_START(xscale_flush_kern_cache_all) mov r2, #VM_EXEC mov ip, #0 __flush_whole_cache: @@ -215,6 +218,7 @@ __flush_whole_cache: mcrne p15, 0, ip, c7, c5, 0 @ Invalidate I cache & BTB mcrne p15, 0, ip, c7, c10, 4 @ Drain Write (& Fill) Buffer ret lr +SYM_FUNC_END(xscale_flush_kern_cache_all) /* * flush_user_cache_range(start, end, vm_flags) @@ -227,7 +231,7 @@ __flush_whole_cache: * - vma - vma_area_struct describing address space */ .align 5 -ENTRY(xscale_flush_user_cache_range) +SYM_TYPED_FUNC_START(xscale_flush_user_cache_range) mov ip, #0 sub r3, r1, r0 @ calculate total size cmp r3, #MAX_AREA_SIZE @@ -244,6 +248,7 @@ ENTRY(xscale_flush_user_cache_range) mcrne p15, 0, ip, c7, c5, 6 @ Invalidate BTB mcrne p15, 0, ip, c7, c10, 4 @ Drain Write (& Fill) Buffer ret lr +SYM_FUNC_END(xscale_flush_user_cache_range) /* * coherent_kern_range(start, end) @@ -258,7 +263,7 @@ ENTRY(xscale_flush_user_cache_range) * Note: single I-cache line invalidation isn't used here since * it also trashes the mini I-cache used by JTAG debuggers. */ -ENTRY(xscale_coherent_kern_range) +SYM_TYPED_FUNC_START(xscale_coherent_kern_range) bic r0, r0, #CACHELINESIZE - 1 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry add r0, r0, #CACHELINESIZE @@ -268,6 +273,7 @@ ENTRY(xscale_coherent_kern_range) mcr p15, 0, r0, c7, c5, 0 @ Invalidate I cache & BTB mcr p15, 0, r0, c7, c10, 4 @ Drain Write (& Fill) Buffer ret lr +SYM_FUNC_END(xscale_coherent_kern_range) /* * coherent_user_range(start, end) @@ -279,7 +285,7 @@ ENTRY(xscale_coherent_kern_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(xscale_coherent_user_range) +SYM_TYPED_FUNC_START(xscale_coherent_user_range) bic r0, r0, #CACHELINESIZE - 1 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry mcr p15, 0, r0, c7, c5, 1 @ Invalidate I cache entry @@ -290,6 +296,7 @@ ENTRY(xscale_coherent_user_range) mcr p15, 0, r0, c7, c5, 6 @ Invalidate BTB mcr p15, 0, r0, c7, c10, 4 @ Drain Write (& Fill) Buffer ret lr +SYM_FUNC_END(xscale_coherent_user_range) /* * flush_kern_dcache_area(void *addr, size_t size) @@ -300,7 +307,7 @@ ENTRY(xscale_coherent_user_range) * - addr - kernel address * - size - region size */ -ENTRY(xscale_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(xscale_flush_kern_dcache_area) add r1, r0, r1 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry mcr p15, 0, r0, c7, c6, 1 @ invalidate D entry @@ -311,6 +318,7 @@ ENTRY(xscale_flush_kern_dcache_area) mcr p15, 0, r0, c7, c5, 0 @ Invalidate I cache & BTB mcr p15, 0, r0, c7, c10, 4 @ Drain Write (& Fill) Buffer ret lr +SYM_FUNC_END(xscale_flush_kern_dcache_area) /* * dma_inv_range(start, end) @@ -361,7 +369,7 @@ xscale_dma_clean_range: * - start - virtual start address * - end - virtual end address */ -ENTRY(xscale_dma_flush_range) +SYM_TYPED_FUNC_START(xscale_dma_flush_range) bic r0, r0, #CACHELINESIZE - 1 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry mcr p15, 0, r0, c7, c6, 1 @ invalidate D entry @@ -370,6 +378,7 @@ ENTRY(xscale_dma_flush_range) blo 1b mcr p15, 0, r0, c7, c10, 4 @ Drain Write (& Fill) Buffer ret lr +SYM_FUNC_END(xscale_dma_flush_range) /* * dma_map_area(start, size, dir) @@ -377,13 +386,27 @@ ENTRY(xscale_dma_flush_range) * - size - size of region * - dir - DMA direction */ -ENTRY(xscale_dma_map_area) +SYM_TYPED_FUNC_START(xscale_dma_map_area) add r1, r1, r0 cmp r2, #DMA_TO_DEVICE beq xscale_dma_clean_range bcs xscale_dma_inv_range b xscale_dma_flush_range -ENDPROC(xscale_dma_map_area) +SYM_FUNC_END(xscale_dma_map_area) + +/* + * On stepping A0/A1 of the 80200, invalidating D-cache by line doesn't + * clear the dirty bits, which means that if we invalidate a dirty line, + * the dirty data can still be written back to external memory later on. + * + * The recommended workaround is to always do a clean D-cache line before + * doing an invalidate D-cache line, so on the affected processors, + * dma_inv_range() is implemented as dma_flush_range(). + * + * See erratum #25 of "Intel 80200 Processor Specification Update", + * revision January 22, 2003, available at: + * http://www.intel.com/design/iio/specupdt/273415.htm + */ /* * dma_map_area(start, size, dir) @@ -391,12 +414,12 @@ ENDPROC(xscale_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(xscale_80200_A0_A1_dma_map_area) +SYM_TYPED_FUNC_START(xscale_80200_A0_A1_dma_map_area) add r1, r1, r0 teq r2, #DMA_TO_DEVICE beq xscale_dma_clean_range b xscale_dma_flush_range -ENDPROC(xscale_80200_A0_A1_dma_map_area) +SYM_FUNC_END(xscale_80200_A0_A1_dma_map_area) /* * dma_unmap_area(start, size, dir) @@ -404,59 +427,17 @@ ENDPROC(xscale_80200_A0_A1_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(xscale_dma_unmap_area) +SYM_TYPED_FUNC_START(xscale_dma_unmap_area) ret lr -ENDPROC(xscale_dma_unmap_area) - - .globl xscale_flush_kern_cache_louis - .equ xscale_flush_kern_cache_louis, xscale_flush_kern_cache_all +SYM_FUNC_END(xscale_dma_unmap_area) - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions xscale - -/* - * On stepping A0/A1 of the 80200, invalidating D-cache by line doesn't - * clear the dirty bits, which means that if we invalidate a dirty line, - * the dirty data can still be written back to external memory later on. - * - * The recommended workaround is to always do a clean D-cache line before - * doing an invalidate D-cache line, so on the affected processors, - * dma_inv_range() is implemented as dma_flush_range(). - * - * See erratum #25 of "Intel 80200 Processor Specification Update", - * revision January 22, 2003, available at: - * http://www.intel.com/design/iio/specupdt/273415.htm - */ -.macro a0_alias basename - .globl xscale_80200_A0_A1_\basename - .type xscale_80200_A0_A1_\basename , %function - .equ xscale_80200_A0_A1_\basename , xscale_\basename -.endm - -/* - * Most of the cache functions are unchanged for these processor revisions. - * Export suitable alias symbols for the unchanged functions: - */ - a0_alias flush_icache_all - a0_alias flush_user_cache_all - a0_alias flush_kern_cache_all - a0_alias flush_kern_cache_louis - a0_alias flush_user_cache_range - a0_alias coherent_kern_range - a0_alias coherent_user_range - a0_alias flush_kern_dcache_area - a0_alias dma_flush_range - a0_alias dma_unmap_area - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions xscale_80200_A0_A1 - -ENTRY(cpu_xscale_dcache_clean_area) +SYM_TYPED_FUNC_START(cpu_xscale_dcache_clean_area) 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry add r0, r0, #CACHELINESIZE subs r1, r1, #CACHELINESIZE bhi 1b ret lr +SYM_FUNC_END(cpu_xscale_dcache_clean_area) /* =============================== PageTable ============================== */ @@ -468,13 +449,14 @@ ENTRY(cpu_xscale_dcache_clean_area) * pgd: new page tables */ .align 5 -ENTRY(cpu_xscale_switch_mm) +SYM_TYPED_FUNC_START(cpu_xscale_switch_mm) clean_d_cache r1, r2 mcr p15, 0, ip, c7, c5, 0 @ Invalidate I cache & BTB mcr p15, 0, ip, c7, c10, 4 @ Drain Write (& Fill) Buffer mcr p15, 0, r0, c2, c0, 0 @ load page table pointer mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs cpwait_ret lr, ip +SYM_FUNC_END(cpu_xscale_switch_mm) /* * cpu_xscale_set_pte_ext(ptep, pte, ext) @@ -502,7 +484,7 @@ cpu_xscale_mt_table: .long 0x00 @ unused .align 5 -ENTRY(cpu_xscale_set_pte_ext) +SYM_TYPED_FUNC_START(cpu_xscale_set_pte_ext) xscale_set_pte_ext_prologue @ @@ -520,6 +502,7 @@ ENTRY(cpu_xscale_set_pte_ext) xscale_set_pte_ext_epilogue ret lr +SYM_FUNC_END(cpu_xscale_set_pte_ext) .ltorg .align @@ -527,7 +510,7 @@ ENTRY(cpu_xscale_set_pte_ext) .globl cpu_xscale_suspend_size .equ cpu_xscale_suspend_size, 4 * 6 #ifdef CONFIG_ARM_CPU_SUSPEND -ENTRY(cpu_xscale_do_suspend) +SYM_TYPED_FUNC_START(cpu_xscale_do_suspend) stmfd sp!, {r4 - r9, lr} mrc p14, 0, r4, c6, c0, 0 @ clock configuration, for turbo mode mrc p15, 0, r5, c15, c1, 0 @ CP access reg @@ -538,9 +521,9 @@ ENTRY(cpu_xscale_do_suspend) bic r4, r4, #2 @ clear frequency change bit stmia r0, {r4 - r9} @ store cp regs ldmfd sp!, {r4 - r9, pc} -ENDPROC(cpu_xscale_do_suspend) +SYM_FUNC_END(cpu_xscale_do_suspend) -ENTRY(cpu_xscale_do_resume) +SYM_TYPED_FUNC_START(cpu_xscale_do_resume) ldmia r0, {r4 - r9} @ load cp regs mov ip, #0 mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs @@ -553,7 +536,7 @@ ENTRY(cpu_xscale_do_resume) mcr p15, 0, r8, c1, c0, 1 @ auxiliary control reg mov r0, r9 @ control register b cpu_resume_mmu -ENDPROC(cpu_xscale_do_resume) +SYM_FUNC_END(cpu_xscale_do_resume) #endif .type __xscale_setup, #function |