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95c6f6d34d
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>
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| .. | ||
| arm_intcm | ||
| arm720t | ||
| arm920t | ||
| arm925t | ||
| arm926ejs | ||
| arm946es | ||
| arm1136 | ||
| arm1176 | ||
| armv7 | ||
| ixp | ||
| lh7a40x | ||
| pxa | ||
| s3c44b0 | ||
| sa1100 | ||