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UPSTREAM: mainboard/google/reef: clear normal MRC cache on recovery retrain

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For Chrome OS the normal MRC cache should be cleared when a hardware
retrain recovery request is observed. The reason is that since there
are 2 different MRC cache slots there needs to be a mechanism which
allows an end user make a system bootable again if the MRC settings
happen to not allow the system to boot any longer. Therefore, one
just needs to enter recovery with the hardware retrain flag and
the system normal MRC cache slot will be invalidated.

BUG=chrome-os-partner:60592
BRANCH=reef
TEST=None

Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/17871
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>

Change-Id: I6ad32ed0dd217d66404b77467a88689a06044544
Reviewed-on: https://chromium-review.googlesource.com/421030
Commit-Ready: Furquan Shaikh <furquan@chromium.org>
Tested-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@chromium.org>
This commit is contained in:
Aaron Durbin 2016-12-14 15:41:45 -06:00 • committed by chrome-bot
parent 87b5af6501
commit 034bb73b28
1 changed files with 1 additions and 0 deletions
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1
src/mainboard/google/reef/Kconfig
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@ -35,6 +35,7 @@ config DRIVER_TPM_I2C_IRQ
config CHROMEOS
select EC_GOOGLE_CHROMEEC_SWITCHES
select HAS_RECOVERY_MRC_CACHE
select MRC_CLEAR_NORMAL_CACHE_ON_RECOVERY_RETRAIN
select LID_SWITCH if BASEBOARD_REEF_LAPTOP
config DRIVERS_I2C_DA7219