the following patch was just integrated into master: commit 2d8112523aa04bca3f4d56d6ba1660082bf279b5 Author: Stefan Reinauer reinauer@chromium.org Date: Mon May 20 15:24:13 2013 -0700
exynos5420: Clear the framebuffer before making it uncacheable
If we clear the framebuffer and then flush it back to memory using cache operations, the writes are going to be full cachelines at a time. If we make it uncacheable first, the writes will be serialized writes of whatever sized chunks memset uses, probably 4 bytes or less.
Change-Id: I960f87a370e97f9e91236ad796d931573bb3dbb8 Signed-off-by: Stefan Reinauer reinauer@chromium.org Signed-off-by: Gabe Black gabeblack@chromium.org Reviewed-on: http://review.coreboot.org/3668 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer stefan.reinauer@coreboot.org
See http://review.coreboot.org/3668 for details.
-gerrit