Change in coreboot[master]: cr50: Make EC clear AP_OFF before hibnernate

[Daisuke Nojiri (Code Review)]

Daisuke Nojiri has uploaded this change for review. ( https://review.coreboot.org/22657

Change subject: cr50: Make EC clear AP_OFF before hibnernate
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cr50: Make EC clear AP_OFF before hibnernate

This patch makes AP send EC_REBOOT_HIBERNATE_CLEAR_AP_OFF, which
makes EC clear AP_OFF flag then hibernate.

This is needed to make Chromebox boot when cr50 toggles the
EC's reset line.

BUG=b:69721737
BRANCH=none
TEST=Verify Fizz reboot after cr50 update.

Change-Id: I5f590286393ac21382cab64afdccae92d3fc14ba
Signed-off-by: Daisuke Nojiri 
---
M src/ec/google/chromeec/ec_commands.h
M src/vendorcode/google/chromeos/cr50_enable_update.c
2 files changed, 7 insertions(+), 4 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/57/22657/1

diff --git a/src/ec/google/chromeec/ec_commands.h b/src/ec/google/chromeec/ec_commands.h
index aa63aa7..ee889b7 100644
--- a/src/ec/google/chromeec/ec_commands.h
+++ b/src/ec/google/chromeec/ec_commands.h
@@ -3785,7 +3785,8 @@
    /* (command 3 was jump to RW-B) */
    EC_REBOOT_COLD = 4,          /* Cold-reboot */
    EC_REBOOT_DISABLE_JUMP = 5,  /* Disable jump until next reboot */
-	EC_REBOOT_HIBERNATE = 6      /* Hibernate EC */
+	EC_REBOOT_HIBERNATE = 6,     /* Hibernate EC */
+	EC_REBOOT_HIBERNATE_CLEAR_AP_OFF = 7, /* and clears AP_OFF flag */
 };

/* Flags for ec_params_reboot_ec.reboot_flags */
diff --git a/src/vendorcode/google/chromeos/cr50_enable_update.c b/src/vendorcode/google/chromeos/cr50_enable_update.c
index 6e67cc2..7917f1c 100644
--- a/src/vendorcode/google/chromeos/cr50_enable_update.c
+++ b/src/vendorcode/google/chromeos/cr50_enable_update.c
@@ -60,10 +60,12 @@
    printk(BIOS_INFO, "Waiting for CR50 reset to pick up update.\n");

if (IS_ENABLED(CONFIG_POWER_OFF_ON_CR50_UPDATE)) {
-		if (IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC))
+		if (IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC)) {
    		printk(BIOS_INFO, "Hibernating EC.\n");
-			google_chromeec_reboot(0, EC_REBOOT_HIBERNATE,
-				EC_REBOOT_FLAG_ON_AP_SHUTDOWN);
+			google_chromeec_reboot(0,
+					       EC_REBOOT_HIBERNATE_CLEAR_AP_OFF,
+					       EC_REBOOT_FLAG_ON_AP_SHUTDOWN);
+		}
    	poweroff();
    }
    halt();