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Heiko Schocher 95c6f6d34d 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>
 		2010-09-19 19:29:51 +02:00
..
arm ARM V7 (OMAP): add data cache support, test on Beagle board 2010-09-19 19:29:51 +02:00
avr32 arm: get rid of bi_env 2010-09-19 19:29:50 +02:00
blackfin New implementation for internal handling of environment variables. 2010-09-19 19:29:48 +02:00
i386 arm: get rid of bi_env 2010-09-19 19:29:50 +02:00
m68k New implementation for internal handling of environment variables. 2010-09-19 19:29:48 +02:00
microblaze New implementation for internal handling of environment variables. 2010-09-19 19:29:48 +02:00
mips arm: get rid of bi_env 2010-09-19 19:29:50 +02:00
nios2 New implementation for internal handling of environment variables. 2010-09-19 19:29:48 +02:00
powerpc New implementation for internal handling of environment variables. 2010-09-19 19:29:48 +02:00
sh New implementation for internal handling of environment variables. 2010-09-19 19:29:48 +02:00
sparc New implementation for internal handling of environment variables. 2010-09-19 19:29:48 +02:00
.gitignore update include/asm/ gitignore after move 2010-05-07 00:17:30 +02:00