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soc/intel/common: provide option to invalide MRC cache on recovery

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Allow a board/platform to invalidate the normal MRC cache when
hardware retraining is requested in recovery mode. A small 4 byte
payload is used to update the latest data written. It will of course
fail on MRC cache retreival on next usage.

BUG=chrome-os-partner:60592
BRANCH=reef

Change-Id: Ic88cd66802664813562d003f50d54e4a4ea375ef
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/17870
Tested-by: build bot (Jenkins)
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
This commit is contained in:
Aaron Durbin
2016-12-14 15:36:56 -06:00
parent 8f9a5ff8ec
commit d09142c136
2 changed files with 38 additions and 0 deletions
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4
src/soc/intel/common/Kconfig
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@@ -31,6 +31,10 @@ config HAS_RECOVERY_MRC_CACHE
bool
default n
config MRC_CLEAR_NORMAL_CACHE_ON_RECOVERY_RETRAIN
bool
default n
config MRC_SETTINGS_VARIABLE_DATA
bool
default n