Patch merged into coreboot/master: 639293d Intel e7505: enable ECC scrubbing

the following patch was just integrated into master:
commit 639293da17094e58b9ff95bb2c1b8fb738b01df3
Author: Kyösti Mälkki 
Date:   Wed Apr 18 20:33:35 2012 +0300

Intel e7505: enable ECC scrubbing

It takes about 3 seconds to scrub 8GiB DDR266 RAM.

After ECC scrub XIP cache is disabled for system stability. There is
    very little to do in romstage after ECC scrub, especially when RAM
    debug messages are turned off. So the delay caused by this is hardly
    noticeable.

Cache for complete ROM is re-enabled before ramstage is decompressed,
    and it has no unstability issues. So the code required to re-enable
    cache for ROM currently already exists in cache-as-ram_ht.inc.

A Kconfig option HW_SCRUBBER enables the scrub to be run on hard
    reboots and power-ons.

Change-Id: Icf27acf73240c06b58091f1229efc0f01cca3f85
    Signed-off-by: Kyösti Mälkki

Reviewed-By: Patrick Georgi  at Sat Apr 21 09:37:03 2012, giving +2
See http://review.coreboot.org/905 for details.

-gerrit