diff options
| -rw-r--r-- | arch/arm/mm/Kconfig | 2 | ||||
| -rw-r--r-- | arch/arm/mm/proc-feroceon.S | 40 |
2 files changed, 1 insertions, 41 deletions
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index 1b8229d9c9d..a92a577c1b6 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -658,7 +658,7 @@ config CPU_DCACHE_SIZE config CPU_DCACHE_WRITETHROUGH bool "Force write through D-cache" - depends on (CPU_ARM740T || CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM940T || CPU_ARM946E || CPU_ARM1020 || CPU_FEROCEON) && !CPU_DCACHE_DISABLE + depends on (CPU_ARM740T || CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM940T || CPU_ARM946E || CPU_ARM1020) && !CPU_DCACHE_DISABLE default y if CPU_ARM925T help Say Y here to use the data cache in writethrough mode. Unless you diff --git a/arch/arm/mm/proc-feroceon.S b/arch/arm/mm/proc-feroceon.S index 90e7594e29b..e9ac984d289 100644 --- a/arch/arm/mm/proc-feroceon.S +++ b/arch/arm/mm/proc-feroceon.S @@ -118,12 +118,8 @@ ENTRY(feroceon_flush_kern_cache_all) mov r2, #VM_EXEC mov ip, #0 __flush_whole_cache: -#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH - mcr p15, 0, ip, c7, c6, 0 @ invalidate D cache -#else 1: mrc p15, 0, r15, c7, c14, 3 @ test,clean,invalidate bne 1b -#endif tst r2, #VM_EXEC mcrne p15, 0, ip, c7, c5, 0 @ invalidate I cache mcrne p15, 0, ip, c7, c10, 4 @ drain WB @@ -145,21 +141,12 @@ ENTRY(feroceon_flush_user_cache_range) cmp r3, #CACHE_DLIMIT bgt __flush_whole_cache 1: tst r2, #VM_EXEC -#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH - mcr p15, 0, r0, c7, c6, 1 @ invalidate D entry - mcrne p15, 0, r0, c7, c5, 1 @ invalidate I entry - add r0, r0, #CACHE_DLINESIZE - mcr p15, 0, r0, c7, c6, 1 @ invalidate D entry - mcrne p15, 0, r0, c7, c5, 1 @ invalidate I entry - add r0, r0, #CACHE_DLINESIZE -#else mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D entry mcrne p15, 0, r0, c7, c5, 1 @ invalidate I entry add r0, r0, #CACHE_DLINESIZE mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D entry mcrne p15, 0, r0, c7, c5, 1 @ invalidate I entry add r0, r0, #CACHE_DLINESIZE -#endif cmp r0, r1 blo 1b tst r2, #VM_EXEC @@ -232,12 +219,10 @@ ENTRY(feroceon_flush_kern_dcache_page) * (same as v4wb) */ ENTRY(feroceon_dma_inv_range) -#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH tst r0, #CACHE_DLINESIZE - 1 mcrne p15, 0, r0, c7, c10, 1 @ clean D entry tst r1, #CACHE_DLINESIZE - 1 mcrne p15, 0, r1, c7, c10, 1 @ clean D entry -#endif bic r0, r0, #CACHE_DLINESIZE - 1 1: mcr p15, 0, r0, c7, c6, 1 @ invalidate D entry add r0, r0, #CACHE_DLINESIZE @@ -257,13 +242,11 @@ ENTRY(feroceon_dma_inv_range) * (same as v4wb) */ ENTRY(feroceon_dma_clean_range) -#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH bic r0, r0, #CACHE_DLINESIZE - 1 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry add r0, r0, #CACHE_DLINESIZE cmp r0, r1 blo 1b -#endif mcr p15, 0, r0, c7, c10, 4 @ drain WB mov pc, lr @@ -278,11 +261,7 @@ ENTRY(feroceon_dma_clean_range) ENTRY(feroceon_dma_flush_range) bic r0, r0, #CACHE_DLINESIZE - 1 1: -#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry -#else - mcr p15, 0, r0, c7, c10, 1 @ clean D entry -#endif add r0, r0, #CACHE_DLINESIZE cmp r0, r1 blo 1b @@ -301,12 +280,10 @@ ENTRY(feroceon_cache_fns) .long feroceon_dma_flush_range ENTRY(cpu_feroceon_dcache_clean_area) -#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry add r0, r0, #CACHE_DLINESIZE subs r1, r1, #CACHE_DLINESIZE bhi 1b -#endif mcr p15, 0, r0, c7, c10, 4 @ drain WB mov pc, lr @@ -323,13 +300,9 @@ ENTRY(cpu_feroceon_dcache_clean_area) ENTRY(cpu_feroceon_switch_mm) #ifdef CONFIG_MMU mov ip, #0 -#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH - mcr p15, 0, ip, c7, c6, 0 @ invalidate D cache -#else @ && 'Clean & Invalidate whole DCache' 1: mrc p15, 0, r15, c7, c14, 3 @ test,clean,invalidate bne 1b -#endif mcr p15, 0, ip, c7, c5, 0 @ invalidate I cache mcr p15, 0, ip, c7, c10, 4 @ drain WB mcr p15, 0, r0, c2, c0, 0 @ load page table pointer @@ -362,16 +335,9 @@ ENTRY(cpu_feroceon_set_pte_ext) tst r1, #L_PTE_PRESENT | L_PTE_YOUNG @ Present and Young? movne r2, #0 -#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH - eor r3, r2, #0x0a @ C & small page? - tst r3, #0x0b - biceq r2, r2, #4 -#endif str r2, [r0] @ hardware version mov r0, r0 -#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH mcr p15, 0, r0, c7, c10, 1 @ clean D entry -#endif mcr p15, 0, r0, c7, c10, 4 @ drain WB #endif mov pc, lr @@ -387,12 +353,6 @@ __feroceon_setup: mcr p15, 0, r0, c8, c7 @ invalidate I,D TLBs on v4 #endif - -#ifdef CONFIG_CPU_DCACHE_WRITETHROUGH - mov r0, #4 @ disable write-back on caches explicitly - mcr p15, 7, r0, c15, c0, 0 -#endif - adr r5, feroceon_crval ldmia r5, {r5, r6} mrc p15, 0, r0, c1, c0 @ get control register v4 |