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soc/intel/common/block/cse: Enforce CSE sync with pertinent GBB flag

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The patch enforces CSE sync when the GBB flag GBB_FLAG_FORCE_CSE_SYNC is
enabled and the system is currently booting from the RO section.
Additionally, it integrates forced CSE sync into eSOL decision-making.

BUG=b:353053317
TEST=Verified forced CSE sync on rex0 with GBB 0x200000

Cq-Depend: chromium:5718196
Change-Id: I228bc8ebf58719776f6c39e0bfbb7ad53d9bfb7f
Signed-off-by: Dinesh Gehlot <digehlot@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83686
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
This commit is contained in:
Dinesh Gehlot
2024-07-30 12:53:50 +05:30
committed by Felix Held
parent 896c76c5c1
commit 5a70f8a092
1 changed files with 30 additions and 5 deletions
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29
src/soc/intel/common/block/cse/cse_lite.c
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@@ -769,6 +769,21 @@ static enum cb_err get_cse_ver_from_cbfs(struct fw_version *cbfs_rw_version)
return CB_SUCCESS;
}
static bool is_cse_sync_enforced(void)
{
/*
* Force test CSE firmware update scenario if below conditions are being met:
* - VB2_GBB_FLAG_FORCE_CSE_SYNC flag is set
* - CSE FW is in RO
*/
struct vb2_context *ctx = vboot_get_context();
if ((vb2api_gbb_get_flags(ctx) & VB2_GBB_FLAG_FORCE_CSE_SYNC) &&
cse_get_current_bp() == RO) {
return true;
}
return false;
}
static enum cse_update_status cse_check_update_status(struct region_device *target_rdev)
{
int ret;
@@ -787,13 +802,19 @@ static enum cse_update_status cse_check_update_status(struct region_device *targ
cbfs_rw_version.build);
ret = cse_compare_sub_part_version(&cbfs_rw_version, cse_get_rw_version());
if (ret == 0)
if (ret == 0) {
if (is_cse_sync_enforced()) {
printk(BIOS_WARNING, "Force CSE Firmware upgrade for Autotest\n");
return CSE_UPDATE_UPGRADE;
}
return CSE_UPDATE_NOT_REQUIRED;
else if (ret < 0)
} else {
if (ret < 0)
return CSE_UPDATE_DOWNGRADE;
else
return CSE_UPDATE_UPGRADE;
}
}
static enum cb_err cse_write_rw_region(const struct region_device *target_rdev,
const void *cse_cbfs_rw, const size_t cse_cbfs_rw_sz)
@@ -1042,6 +1063,10 @@ bool is_cse_fw_update_required(void)
if (get_cse_ver_from_cbfs(&cbfs_rw_version) == CB_ERR)
return false;
/* Check if CSE sync is enforced */
if (is_cse_sync_enforced()) {
return true;
}
return !!cse_compare_sub_part_version(&cbfs_rw_version, cse_get_rw_version());
}