vc/google/elog: Record vboot FW boot information into elog

This patch calls into vboot API (vb2api_get_fw_boot_info) to retrieve
FW slot boot information like (tries count, current boot slot, previous
boot slot, previous boot status and boot mode).

Upon retrieval of the vboot information, elog callback from ramstage
records the info into the eventlog.

Additionally, this patch refactors the existing event logging mechanism
to add newer APIs to record vboot firmware boot related information.

BUG=b:215615970
TEST=Build and boot google/kano to ChromeOS and run below command to
check the cbmem log:
Scenario 1:
localhost ~ # cbmem -c | grep VB2
[INFO ]  VB2:vb2_check_recovery() Recovery reason from previous boot:
         0x0 / 0x0
[INFO ]  VB2:vb2api_fill_boot_config() boot_mode=`Developer boot`
         VB2:vb2api_get_fw_boot_info() fw_tried=`A` fw_try_count=0
            fw_prev_tried=`A` fw_prev_result=`Success`.
....

Scenario 2:
localhost ~ # crossystem recovery_request=1
localhost ~ # cbmem -c | grep VB2
[INFO ]  VB2:vb2api_fill_boot_config() boot_mode=`Manual recovery boot`
         VB2:vb2api_fill_boot_config() recovery_reason=0x13 / 0x00
         VB2:vb2api_get_fw_boot_info() fw_tried=`A` fw_try_count=0
            fw_prev_tried=`A` fw_prev_result=`Unknown`.

Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: I6882cd1c4dbe5e24f6460388cd1af4e4a05fc4da
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65561
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions