the following patch was just integrated into master: commit dfe614ff9fea97b712e10f4977f2343a1f070d3e Author: Aaron Durbin adurbin@chromium.org Date: Fri Sep 16 11:15:49 2016 -0500
soc/intel/apollolake: cache boot media post romstage
When the boot media is memory mapped mark it as cacheable after romstage. Otherwise the boot media is uncacheable and all loads from it take longer. Loading FSP-S alone in ramstage went down to 17.5ms from 54ms.
BUG=chrome-os-partner:56656
Change-Id: I6703334ba8fe98aca26ba1c995d6d3abb0ddef33 Signed-off-by: Aaron Durbin adurbin@chromium.org Reviewed-on: https://review.coreboot.org/16613 Reviewed-by: Andrey Petrov andrey.petrov@intel.com Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel paulepanter@users.sourceforge.net
See https://review.coreboot.org/16613 for details.
-gerrit