Hi,

here's a patch against 0.4.8 that allows CFG_ALT_MEMTEST to be used on systems where writing to address zero crashes the system.

On ARM (well, at least on my PXA255) writing to address zero causes a "data abort" (which, IMHO, is a Good Thing(tm)).

This patch allows the board-specific config to define an alternative scratch-address (CFG_MEMTEST_SCRATCH) to be used by the extensive memory test. CFG_MEMTEST_SCRATCH does not have to point to physical RAM, it only has to point to a writeable (not necessarily readable) address.

CHANGELOG: Allow CFG_ALT_MEMTEST on systems where address zero isn't writeable

Cheers Anders