[U-Boot] Testing Data Cache for armv7 (beagleboard)

[chris chriss]

I'm trying to test the cache on my beagle with a snapshot from the git tree
today.  I tried it out by loading a file from the mmc with dcache off and
then dcache on.  I didn't see any difference in speed.  After reading this
commit (http://git.denx.de/?p=u-boot.git;a=commit;h=95c6f6d), I expected to
see a performance improvement.


This is a capture of how I tested it...

<capture>

OMAP3 beagleboard.org # mmc init 1
mmc1 is available
OMAP3 beagleboard.org # dcache
Data (writethrough) Cache is OFF
OMAP3 beagleboard.org # fatload mmc 0:1 0x80000000 uImage.bin
reading uImage.bin

3852836 bytes read
OMAP3 beagleboard.org # dcache on
Data (writethrough) Cache is ON
OMAP3 beagleboard.org # fatload mmc 0:1 0x80000000 uImage.bin
reading uImage.bin

3852836 bytes read
OMAP3 beagleboard.org #

</capture>