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| author | Heiko Schocher <hs@denx.de> | 2010-09-17 13:10:31 +0200 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2010-09-19 19:29:51 +0200 |
| commit | 95c6f6d34d4ff23f4d005488d84682eec5fa9ec8 (patch) | |
| tree | df364195d710c9af05e9fa3341dd6e13fc121173 /arch/arm/lib/cache.c | |
| parent | c3330e9d6a11b6ead4a2346001338ce884b5832b (diff) | |
| download | blackbird-obmc-uboot-95c6f6d34d4ff23f4d005488d84682eec5fa9ec8.tar.gz blackbird-obmc-uboot-95c6f6d34d4ff23f4d005488d84682eec5fa9ec8.zip | |
ARM V7 (OMAP): add data cache support, test on Beagle board
Add data cache support for ARM V7 systems. Used cache flush
functions from linux:arch/arm/mm/cache-v7.S developed from
Catalin Marinas.
Enable "cache" command on Beagle 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
--------------------------------------------------
Beagle (Cortex A8) 116s 106s 30.3s = x 3.8
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
--------------------------------------------------
Beagle (Cortex A8) 1.84s 1.64s 0.12s = x 15.3
Portions of this work were supported by funding from
the CE Linux Forum.
Signed-off-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Ben Gardiner<bengardiner@nanometrics.ca>
Diffstat (limited to 'arch/arm/lib/cache.c')
| -rw-r--r-- | arch/arm/lib/cache.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/lib/cache.c b/arch/arm/lib/cache.c index b36fd24407..3684cad16a 100644 --- a/arch/arm/lib/cache.c +++ b/arch/arm/lib/cache.c @@ -38,5 +38,10 @@ void flush_cache (unsigned long dummy1, unsigned long dummy2) /* disable write buffer as well (page 2-22) */ asm("mcr p15, 0, %0, c7, c10, 4" : : "r" (0)); #endif +#ifdef CONFIG_ARMCORTEXA8 + void v7_flush_cache_all(void); + + v7_flush_cache_all(); +#endif return; } |
