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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 /board/v38b | |
| parent | c3330e9d6a11b6ead4a2346001338ce884b5832b (diff) | |
| download | u-boot-imx-95c6f6d34d4ff23f4d005488d84682eec5fa9ec8.zip u-boot-imx-95c6f6d34d4ff23f4d005488d84682eec5fa9ec8.tar.gz u-boot-imx-95c6f6d34d4ff23f4d005488d84682eec5fa9ec8.tar.bz2 | |
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 'board/v38b')
0 files changed, 0 insertions, 0 deletions