From 7e4a9e6dc819b2b3499659ca90e1e9c6d4ca3077 Mon Sep 17 00:00:00 2001 From: Heiko Schocher Date: Fri, 17 Sep 2010 13:10:32 +0200 Subject: [PATCH] ARM (ARM11): add data cache support, test on Qong board Add data cache support for arm1136 systems. Enable "cache" command on Qong board and test performance. Test 1: Loading 127 MB of data from NAND flash into RAM: Instr. Cache off on on Data Cache off off on -------------------------------------------------- QONG (ARM11) 177s 95s 43s = x 4.1 Test 2: uncompressing a gzipped image from RAM to RAM (size compressed: 6.5 MiB, uncompressed: 35 MiB): Instr. Cache off on on Data Cache off off on -------------------------------------------------- QONG (ARM11) 1.54s 0.95s 0.18s = x 8.6 Portions of this work were supported by funding from the CE Linux Forum. Signed-off-by: Heiko Schocher --- arch/arm/cpu/arm1136/start.S | 5 +++++ arch/arm/lib/cache.c | 2 +- include/configs/qong.h | 1 + 3 files changed, 7 insertions(+), 1 deletion(-) diff --git a/arch/arm/cpu/arm1136/start.S b/arch/arm/cpu/arm1136/start.S index 41eb82dae2..1c58abdcd0 100644 --- a/arch/arm/cpu/arm1136/start.S +++ b/arch/arm/cpu/arm1136/start.S @@ -439,6 +439,11 @@ fiq: .align 5 .global arm1136_cache_flush arm1136_cache_flush: +#if !defined(CONFIG_SYS_NO_ICACHE) mcr p15, 0, r1, c7, c5, 0 @ invalidate I cache +#endif +#if !defined(CONFIG_SYS_NO_DCACHE) + mcr p15, 0, r1, c7, c14, 0 @ invalidate D cache +#endif mov pc, lr @ back to caller #endif /* CONFIG_PRELOADER */ diff --git a/arch/arm/lib/cache.c b/arch/arm/lib/cache.c index 3684cad16a..55b633ee00 100644 --- a/arch/arm/lib/cache.c +++ b/arch/arm/lib/cache.c @@ -27,7 +27,7 @@ void flush_cache (unsigned long dummy1, unsigned long dummy2) { -#ifdef CONFIG_OMAP2420 +#if defined(CONFIG_OMAP2420) || defined(CONFIG_ARM1136) void arm1136_cache_flush(void); arm1136_cache_flush(); diff --git a/include/configs/qong.h b/include/configs/qong.h index 100fa3f8ac..4735b5eb88 100644 --- a/include/configs/qong.h +++ b/include/configs/qong.h @@ -104,6 +104,7 @@ #include +#define CONFIG_CMD_CACHE #define CONFIG_CMD_PING #define CONFIG_CMD_DHCP #define CONFIG_CMD_NET