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
Signed-off-by: Heiko Schocher hs@denx.de --- - changes since v1: - changed commit message - moved cache patches before relocation patches
arch/arm/cpu/arm1136/start.S | 5 +++++ arch/arm/lib/cache.c | 2 +- include/configs/qong.h | 1 + 3 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/arch/arm/cpu/arm1136/start.S b/arch/arm/cpu/arm1136/start.S index 41eb82d..1c58abd 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 3684cad..55b633e 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 100fa3f..4735b5e 100644 --- a/include/configs/qong.h +++ b/include/configs/qong.h @@ -104,6 +104,7 @@
#include <config_cmd_default.h>
+#define CONFIG_CMD_CACHE #define CONFIG_CMD_PING #define CONFIG_CMD_DHCP #define CONFIG_CMD_NET