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chromeos/cr50_enable_update.c: Clear EC AP_IDLE flag

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When AP boots up after Cr50 firmware update and reboot, AP finds
that Cr50 reset is required for Cr50 to pick the new firmware so
it trigger Cr50 reset and power off the system, AP expects system
will power on automatically after Cr50 reset. However this is not
the case for Chromebox, Chromebox EC set AP_IDLE flag when system
is shutting down, when AP_IDLE flag is set in EC, the system stays
at S5/G3 and wait for power button presssend. It cause an issue in
factory that the operator needs to press power button to power on
the DUT after Cr50 firmware update.

This patch sends EC command to direct EC to clear AP_IDLE flag
after AP shutdown so AP can boot up when Cr50 reset.

BUG=b:261119366
BRANCH=firmware-brya-14505.B
TEST=DUT boots up after Cr50 firmware update in factory test flow

Change-Id: If97ffbe65f4783f17f4747a87b0bf89a2b021a3b
Signed-off-by: Derek Huang <derekhuang@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/70773
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Derek Huang
2022-12-15 07:27:41 +00:00
committed by Subrata Banik
parent b3ebf5ba0b
commit da3812208e
4 changed files with 26 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/ec/google/chromeec/ec_commands.h
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@@ -5393,12 +5393,14 @@ enum ec_reboot_cmd {
EC_REBOOT_HIBERNATE = 6, /* Hibernate EC */
EC_REBOOT_HIBERNATE_CLEAR_AP_OFF = 7, /* and clears AP_IDLE flag */
EC_REBOOT_COLD_AP_OFF = 8, /* Cold-reboot and don't boot AP */
EC_REBOOT_NO_OP = 9, /* Do nothing but apply the flags. */
};
/* Flags for ec_params_reboot_ec.reboot_flags */
#define EC_REBOOT_FLAG_RESERVED0 BIT(0) /* Was recovery request */
#define EC_REBOOT_FLAG_ON_AP_SHUTDOWN BIT(1) /* Reboot after AP shutdown */
#define EC_REBOOT_FLAG_SWITCH_RW_SLOT BIT(2) /* Switch RW slot */
#define EC_REBOOT_FLAG_CLEAR_AP_IDLE BIT(3) /* Clear AP_IDLE flag */
struct ec_params_reboot_ec {
uint8_t cmd; /* enum ec_reboot_cmd */