Add configuration for the write-allocate mode of L1 D-Cache on ARM. This is needed for D-Cache operation on Cortex-A9 on the SoCFPGA .
Signed-off-by: Marek Vasut marex@denx.de Cc: Chin Liang See clsee@altera.com Cc: Dinh Nguyen dinguyen@altera.com Cc: Albert Aribaud albert.u.boot@aribaud.net Cc: Tom Rini trini@ti.com Cc: Wolfgang Denk wd@denx.de Cc: Pavel Machek pavel@denx.de Acked-by: Pavel Machek pavel@denx.de --- arch/arm/include/asm/system.h | 1 + arch/arm/lib/cache-cp15.c | 2 ++ 2 files changed, 3 insertions(+)
diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h index d51ba66..ca2d44f 100644 --- a/arch/arm/include/asm/system.h +++ b/arch/arm/include/asm/system.h @@ -185,6 +185,7 @@ enum dcache_option { DCACHE_OFF = 0x12, DCACHE_WRITETHROUGH = 0x1a, DCACHE_WRITEBACK = 0x1e, + DCACHE_WRITEALLOC = 0x16, };
/* Size of an MMU section */ diff --git a/arch/arm/lib/cache-cp15.c b/arch/arm/lib/cache-cp15.c index 3e62d58..2155fe8 100644 --- a/arch/arm/lib/cache-cp15.c +++ b/arch/arm/lib/cache-cp15.c @@ -73,6 +73,8 @@ __weak void dram_bank_mmu_setup(int bank) i++) { #if defined(CONFIG_SYS_ARM_CACHE_WRITETHROUGH) set_section_dcache(i, DCACHE_WRITETHROUGH); +#elif defined(CONFIG_SYS_ARM_CACHE_WRITEALLOC) + set_section_dcache(i, DCACHE_WRITEALLOC); #else set_section_dcache(i, DCACHE_WRITEBACK); #endif