From 14dd073e80bc076a6416b613758a592d77521ba2 Mon Sep 17 00:00:00 2001 From: Tim Wawrzynczak Date: Fri, 6 Dec 2019 09:28:29 -0700 Subject: EC sync: Properly handle VBERROR return codes from vb2api_ec_sync Some return codes were missed when implementing this initially; the vboot logic can require the system to command the EC to reboot to its RO, switch RW slots or it can require a poweroff of the SoC. This patch appropriately handles these return codes. BUG=b:145768046 BRANCH=firmware-hatch-12672.B TEST=ODM verified this patch fixes the issues seen. Change-Id: I2748cf626d49c255cb0274cb336b072dcdf8cded Signed-off-by: Tim Wawrzynczak Reviewed-on: https://review.coreboot.org/c/coreboot/+/37562 Tested-by: build bot (Jenkins) Reviewed-by: Julius Werner --- src/security/vboot/ec_sync.c | 34 ++++++++++++++++++++++++++++++++-- 1 file changed, 32 insertions(+), 2 deletions(-) diff --git a/src/security/vboot/ec_sync.c b/src/security/vboot/ec_sync.c index 8a3ba71d75..ecceff50f9 100644 --- a/src/security/vboot/ec_sync.c +++ b/src/security/vboot/ec_sync.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include #include @@ -60,9 +61,38 @@ void vboot_sync_ec(void) retval = vb2api_ec_sync(ctx); vboot_save_nvdata_only(ctx); - if (retval != VB2_SUCCESS) { - printk(BIOS_ERR, "EC software sync failed (%#x), rebooting\n", retval); + switch (retval) { + case VB2_SUCCESS: + break; + + case VBERROR_EC_REBOOT_TO_RO_REQUIRED: + printk(BIOS_INFO, "EC Reboot requested. Doing cold reboot\n"); + if (google_chromeec_reboot(0, EC_REBOOT_COLD, 0)) + printk(BIOS_EMERG, "Failed to get EC to cold reboot\n"); + + halt(); + break; + + /* Only for EC-EFS */ + case VBERROR_EC_REBOOT_TO_SWITCH_RW: + printk(BIOS_INFO, "Switch EC slot requested. Doing cold reboot\n"); + if (google_chromeec_reboot(0, EC_REBOOT_COLD, + EC_REBOOT_FLAG_SWITCH_RW_SLOT)) + printk(BIOS_EMERG, "Failed to get EC to cold reboot\n"); + + halt(); + break; + + case VBERROR_REBOOT_REQUIRED: + printk(BIOS_INFO, "Reboot requested. Doing warm reboot\n"); + vboot_reboot(); + break; + + default: + printk(BIOS_ERR, "EC software sync failed (%#x)," + " rebooting\n", retval); vboot_reboot(); + break; } timestamp_add_now(TS_END_EC_SYNC); -- cgit v1.2.3