mrc_cache: Move code for triggering memory training into mrc_cache

Currently the decision of whether or not to use mrc_cache in recovery
mode is made within the individual platforms' drivers (ie: fsp2.0,
fsp1.1, etc.).  As this is not platform specific, but uses common
vboot infrastructure, the code can be unified and moved into
mrc_cache.  The conditions are as follows:

  1.  If HAS_RECOVERY_MRC_CACHE, use mrc_cache data (unless retrain
      switch is true)
  2.  If !HAS_RECOVERY_MRC_CACHE && VBOOT_STARTS_IN_BOOTBLOCK, this
      means that memory training will occur after verified boot,
      meaning that mrc_cache will be filled with data from executing
      RW code.  So in this case, we never want to use the training
      data in the mrc_cache for recovery mode.
  3.  If !HAS_RECOVERY_MRC_CACHE && VBOOT_STARTS_IN_ROMSTAGE, this
      means that memory training happens before verfied boot, meaning
      that the mrc_cache data is generated by RO code, so it is safe
      to use for a recovery boot.
  4.  Any platform that does not use vboot should be unaffected.

Additionally, we have removed the
MRC_CLEAR_NORMAL_CACHE_ON_RECOVERY_RETRAIN config because the
mrc_cache driver takes care of invalidating the mrc_cache data for
normal mode.  If the platform:
  1.  !HAS_RECOVERY_MRC_CACHE, always invalidate mrc_cache data
  2.  HAS_RECOVERY_MRC_CACHE, only invalidate if retrain switch is set

BUG=b:150502246
BRANCH=None
TEST=1. run dut-control power_state:rec_force_mrc twice on lazor
        ensure that memory retraining happens both times
        run dut-control power_state:rec twice on lazor
        ensure that memory retraining happens only first time
     2. remove HAS_RECOVERY_MRC_CACHE from lazor Kconfig
        boot twice to ensure caching of memory training occurred
	on each boot.

Change-Id: I3875a7b4a4ba3c1aa8a3c1507b3993036a7155fc
Signed-off-by: Shelley Chen <shchen@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46855
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

11 files changed, 0 insertions, 12 deletions

diff --git a/src/mainboard/google/dedede/Kconfig b/src/mainboard/google/dedede/Kconfig
index 6da65052cd..891b48acc9 100644
--- a/src/mainboard/google/dedede/Kconfig
+++ b/src/mainboard/google/dedede/Kconfig
@@ -47,7 +47,6 @@ config CHROMEOS
 	select GBB_FLAG_FORCE_DEV_BOOT_LEGACY
 	select GBB_FLAG_FORCE_MANUAL_RECOVERY
 	select HAS_RECOVERY_MRC_CACHE
-	select MRC_CLEAR_NORMAL_CACHE_ON_RECOVERY_RETRAIN
 	select VBOOT_EARLY_EC_SYNC
 	select VBOOT_LID_SWITCH
 
diff --git a/src/mainboard/google/deltaur/Kconfig b/src/mainboard/google/deltaur/Kconfig
index dafd593ab6..8d958493bd 100644
--- a/src/mainboard/google/deltaur/Kconfig
+++ b/src/mainboard/google/deltaur/Kconfig
@@ -90,7 +90,6 @@ config VARIANT_DIR
 
 config VBOOT
 	select HAS_RECOVERY_MRC_CACHE
-	select MRC_CLEAR_NORMAL_CACHE_ON_RECOVERY_RETRAIN
 	select VBOOT_LID_SWITCH
 
 endif # BOARD_GOOGLE_BASEBOARD_DELTAUR
diff --git a/src/mainboard/google/drallion/Kconfig b/src/mainboard/google/drallion/Kconfig
index d535d141e1..6c90eed9a8 100644
--- a/src/mainboard/google/drallion/Kconfig
+++ b/src/mainboard/google/drallion/Kconfig
@@ -93,7 +93,6 @@ config DEVICETREE
 
 config VBOOT
 	select HAS_RECOVERY_MRC_CACHE
-	select MRC_CLEAR_NORMAL_CACHE_ON_RECOVERY_RETRAIN
 	select VBOOT_LID_SWITCH
 
 endif # BOARD_GOOGLE_BASEBOARD_DRALLION
diff --git a/src/mainboard/google/eve/Kconfig b/src/mainboard/google/eve/Kconfig
index 9316c7f213..ece0119a3e 100644
--- a/src/mainboard/google/eve/Kconfig
+++ b/src/mainboard/google/eve/Kconfig
@@ -28,7 +28,6 @@ config VBOOT
 	select EC_GOOGLE_CHROMEEC_SWITCHES
 	select HAS_RECOVERY_MRC_CACHE
 	select VBOOT_LID_SWITCH
-	select MRC_CLEAR_NORMAL_CACHE_ON_RECOVERY_RETRAIN
 
 config CHROMEOS
 	select DSAR_ENABLE
diff --git a/src/mainboard/google/fizz/Kconfig b/src/mainboard/google/fizz/Kconfig
index a21df378ef..e09f853337 100644
--- a/src/mainboard/google/fizz/Kconfig
+++ b/src/mainboard/google/fizz/Kconfig
@@ -40,7 +40,6 @@ config OVERRIDE_DEVICETREE
 config VBOOT
 	select EC_GOOGLE_CHROMEEC_SWITCHES
 	select HAS_RECOVERY_MRC_CACHE
-	select MRC_CLEAR_NORMAL_CACHE_ON_RECOVERY_RETRAIN
 
 config DRIVER_TPM_SPI_BUS
 	default 0x1
diff --git a/src/mainboard/google/hatch/Kconfig b/src/mainboard/google/hatch/Kconfig
index 4d7d5ec990..12e56384bd 100644
--- a/src/mainboard/google/hatch/Kconfig
+++ b/src/mainboard/google/hatch/Kconfig
@@ -54,7 +54,6 @@ config CHROMEOS
 	select GBB_FLAG_FORCE_DEV_BOOT_LEGACY
 	select GBB_FLAG_FORCE_MANUAL_RECOVERY
 	select HAS_RECOVERY_MRC_CACHE
-	select MRC_CLEAR_NORMAL_CACHE_ON_RECOVERY_RETRAIN
 	select VBOOT_LID_SWITCH
 	select CHROMEOS_CSE_BOARD_RESET_OVERRIDE if SOC_INTEL_CSE_LITE_SKU
 
@@ -183,7 +182,6 @@ config VARIANT_DIR
 
 config VBOOT
 	select HAS_RECOVERY_MRC_CACHE
-	select MRC_CLEAR_NORMAL_CACHE_ON_RECOVERY_RETRAIN
 	select VBOOT_EARLY_EC_SYNC
 
 config USE_PM_ACPI_TIMER
diff --git a/src/mainboard/google/octopus/Kconfig b/src/mainboard/google/octopus/Kconfig
index b9c6a1ba34..588c8ed331 100644
--- a/src/mainboard/google/octopus/Kconfig
+++ b/src/mainboard/google/octopus/Kconfig
@@ -46,7 +46,6 @@ config CHROMEOS
 	default y
 	select EC_GOOGLE_CHROMEEC_SWITCHES
 	select HAS_RECOVERY_MRC_CACHE
-	select MRC_CLEAR_NORMAL_CACHE_ON_RECOVERY_RETRAIN
 	select VBOOT_LID_SWITCH
 
 config MAINBOARD_DIR
diff --git a/src/mainboard/google/poppy/Kconfig b/src/mainboard/google/poppy/Kconfig
index d8b90bcdc3..2656d28173 100644
--- a/src/mainboard/google/poppy/Kconfig
+++ b/src/mainboard/google/poppy/Kconfig
@@ -208,7 +208,6 @@ config VARIANT_SPECIFIC_OPTIONS_SORAKA
 config VBOOT
 	select EC_GOOGLE_CHROMEEC_SWITCHES
 	select HAS_RECOVERY_MRC_CACHE
-	select MRC_CLEAR_NORMAL_CACHE_ON_RECOVERY_RETRAIN
 	select VBOOT_LID_SWITCH
 
 config UART_FOR_CONSOLE
diff --git a/src/mainboard/google/reef/Kconfig b/src/mainboard/google/reef/Kconfig
index 76a864062f..9744d74738 100644
--- a/src/mainboard/google/reef/Kconfig
+++ b/src/mainboard/google/reef/Kconfig
@@ -43,7 +43,6 @@ config TPM_TIS_ACPI_INTERRUPT
 config VBOOT
 	select EC_GOOGLE_CHROMEEC_SWITCHES
 	select HAS_RECOVERY_MRC_CACHE
-	select MRC_CLEAR_NORMAL_CACHE_ON_RECOVERY_RETRAIN
 	select VBOOT_LID_SWITCH if BASEBOARD_REEF_LAPTOP
 
 config MAINBOARD_DIR
diff --git a/src/mainboard/google/sarien/Kconfig b/src/mainboard/google/sarien/Kconfig
index 5b580724bb..9b0d25158c 100644
--- a/src/mainboard/google/sarien/Kconfig
+++ b/src/mainboard/google/sarien/Kconfig
@@ -94,7 +94,6 @@ config DEVICETREE
 
 config VBOOT
 	select HAS_RECOVERY_MRC_CACHE
-	select MRC_CLEAR_NORMAL_CACHE_ON_RECOVERY_RETRAIN
 	select VBOOT_LID_SWITCH
 
 endif # BOARD_GOOGLE_BASEBOARD_SARIEN
diff --git a/src/mainboard/google/volteer/Kconfig b/src/mainboard/google/volteer/Kconfig
index a5cc1966dc..07a5fde7a1 100644
--- a/src/mainboard/google/volteer/Kconfig
+++ b/src/mainboard/google/volteer/Kconfig
@@ -45,7 +45,6 @@ config CHROMEOS
 	select GBB_FLAG_FORCE_DEV_BOOT_LEGACY
 	select GBB_FLAG_FORCE_MANUAL_RECOVERY
 	select HAS_RECOVERY_MRC_CACHE
-	select MRC_CLEAR_NORMAL_CACHE_ON_RECOVERY_RETRAIN
 	select VBOOT_LID_SWITCH
 	select VBOOT_EARLY_EC_SYNC