the following patch was just integrated into master: commit f7cdfe5b328dbddeead9ff62d19e9bed37f0295f Author: Aaron Durbin adurbin@chromium.org Date: Sat Feb 16 00:05:52 2013 -0600
haswell: implement ramstage caching in SMM region
Cache the relocated ramstage into the SMM region. There is a reserved region within the final SMM region (TSEG). Use that space to cache the relocated ramstage program. That way, on S3 resume there is a copy that can be loaded quickly instead of accessing the flash. Caching the ramstage in the SMM space is also helpful in that it prevents the OS from tampering with the ramstage program.
Change-Id: Ifa695ad1c350d5b504b14cc29d3e83c79b317a62 Signed-off-by: Aaron Durbin adurbin@chromium.org Reviewed-on: http://review.coreboot.org/2806 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich rminnich@gmail.com
Build-Tested: build bot (Jenkins) at Tue Mar 19 07:21:23 2013, giving +1 Reviewed-By: Ronald G. Minnich rminnich@gmail.com at Thu Mar 21 23:00:39 2013, giving +2 See http://review.coreboot.org/2806 for details.
-gerrit