From 4360bb41920ffacd4a935fa692768129ee5bef4e Mon Sep 17 00:00:00 2001 From: Ronen Shitrit Date: Tue, 23 Sep 2008 15:28:10 +0300 Subject: [ARM] Kirkwood: add support for L2 cache WB/WT selection Feroceon L2 cache can work in eighther write through or write back mode on Kirkwood. Add the option to configure this mode according to Kconfig. Signed-off-by: Ronen Shitrit Signed-off-by: Nicolas Pitre --- arch/arm/mm/proc-feroceon.S | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'arch/arm/mm/proc-feroceon.S') diff --git a/arch/arm/mm/proc-feroceon.S b/arch/arm/mm/proc-feroceon.S index f2e5884c513..207392f1ce8 100644 --- a/arch/arm/mm/proc-feroceon.S +++ b/arch/arm/mm/proc-feroceon.S @@ -80,7 +80,8 @@ ENTRY(cpu_feroceon_proc_fin) msr cpsr_c, ip bl feroceon_flush_kern_cache_all -#if defined(CONFIG_CACHE_FEROCEON_L2) && !defined(CONFIG_L2_CACHE_WRITETHROUGH) +#if defined(CONFIG_CACHE_FEROCEON_L2) && \ + !defined(CONFIG_CACHE_FEROCEON_L2_WRITETHROUGH) mov r0, #0 mcr p15, 1, r0, c15, c9, 0 @ clean L2 mcr p15, 0, r0, c7, c10, 4 @ drain WB @@ -389,7 +390,8 @@ ENTRY(feroceon_range_cache_fns) .align 5 ENTRY(cpu_feroceon_dcache_clean_area) -#if defined(CONFIG_CACHE_FEROCEON_L2) && !defined(CONFIG_L2_CACHE_WRITETHROUGH) +#if defined(CONFIG_CACHE_FEROCEON_L2) && \ + !defined(CONFIG_CACHE_FEROCEON_L2_WRITETHROUGH) mov r2, r0 mov r3, r1 #endif @@ -397,7 +399,8 @@ ENTRY(cpu_feroceon_dcache_clean_area) add r0, r0, #CACHE_DLINESIZE subs r1, r1, #CACHE_DLINESIZE bhi 1b -#if defined(CONFIG_CACHE_FEROCEON_L2) && !defined(CONFIG_L2_CACHE_WRITETHROUGH) +#if defined(CONFIG_CACHE_FEROCEON_L2) && \ + !defined(CONFIG_CACHE_FEROCEON_L2_WRITETHROUGH) 1: mcr p15, 1, r2, c15, c9, 1 @ clean L2 entry add r2, r2, #CACHE_DLINESIZE subs r3, r3, #CACHE_DLINESIZE @@ -466,7 +469,8 @@ ENTRY(cpu_feroceon_set_pte_ext) str r2, [r0] @ hardware version mov r0, r0 mcr p15, 0, r0, c7, c10, 1 @ clean D entry -#if defined(CONFIG_CACHE_FEROCEON_L2) && !defined(CONFIG_L2_CACHE_WRITETHROUGH) +#if defined(CONFIG_CACHE_FEROCEON_L2) && \ + !defined(CONFIG_CACHE_FEROCEON_L2_WRITETHROUGH) mcr p15, 1, r0, c15, c9, 1 @ clean L2 entry #endif mcr p15, 0, r0, c7, c10, 4 @ drain WB -- cgit v1.2.3 From da0916539d20f257dfa46784357300e49d6bfd00 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 6 Sep 2008 17:19:08 +0100 Subject: [ARM] Convert set_pte_ext implementions to macros There are actually only four separate implementations of set_pte_ext. Use assembler macros to insert code for these into the proc-*.S files. Signed-off-by: Russell King --- arch/arm/mm/proc-feroceon.S | 19 +------------------ 1 file changed, 1 insertion(+), 18 deletions(-) (limited to 'arch/arm/mm/proc-feroceon.S') diff --git a/arch/arm/mm/proc-feroceon.S b/arch/arm/mm/proc-feroceon.S index f2e5884c513..240366ee81e 100644 --- a/arch/arm/mm/proc-feroceon.S +++ b/arch/arm/mm/proc-feroceon.S @@ -446,24 +446,7 @@ ENTRY(cpu_feroceon_switch_mm) .align 5 ENTRY(cpu_feroceon_set_pte_ext) #ifdef CONFIG_MMU - str r1, [r0], #-2048 @ linux version - - eor r1, r1, #L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_WRITE | L_PTE_DIRTY - - bic r2, r1, #PTE_SMALL_AP_MASK - bic r2, r2, #PTE_TYPE_MASK - orr r2, r2, #PTE_TYPE_SMALL - - tst r1, #L_PTE_USER @ User? - orrne r2, r2, #PTE_SMALL_AP_URO_SRW - - tst r1, #L_PTE_WRITE | L_PTE_DIRTY @ Write and Dirty? - orreq r2, r2, #PTE_SMALL_AP_UNO_SRW - - tst r1, #L_PTE_PRESENT | L_PTE_YOUNG @ Present and Young? - movne r2, #0 - - str r2, [r0] @ hardware version + armv3_set_pte_ext wc_disable=0 mov r0, r0 mcr p15, 0, r0, c7, c10, 1 @ clean D entry #if defined(CONFIG_CACHE_FEROCEON_L2) && !defined(CONFIG_L2_CACHE_WRITETHROUGH) -- cgit v1.2.3 From 5ec9407dd1196daaf12b427b351e2cd62d2a16a7 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 7 Sep 2008 19:15:31 +0100 Subject: [ARM] Don't include asm/elf.h in asm code asm code really wants asm/hwcap.h, so include that instead. Signed-off-by: Russell King --- arch/arm/mm/proc-feroceon.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/arm/mm/proc-feroceon.S') diff --git a/arch/arm/mm/proc-feroceon.S b/arch/arm/mm/proc-feroceon.S index 240366ee81e..2b8bb383755 100644 --- a/arch/arm/mm/proc-feroceon.S +++ b/arch/arm/mm/proc-feroceon.S @@ -22,7 +22,7 @@ #include #include #include -#include +#include #include #include #include -- cgit v1.2.3