Subrata Banik 8b468400f1 util/cbfstool/elogtool: Support logging FW vboot info in elog
List of changes:
1. Add support for new elog event type to log vboot info (type 0xB7).
2. Add support string for fw_slot name, boot status and boot mode.
3. Print fw slot information like FW try count, FW current slot,
    previous FW slot, previous FW boot result and boot mode.

BUG=b:215615970
TEST=Able to build and boot google/kano to OS.
localhost # elogtool list
0 | 2022-07-01 11:10:27 | Log area cleared | 4088
1 | 2022-07-01 11:10:27 | Memory Cache Update | Normal | Success
2 | 2022-07-01 11:10:42 | System boot | 360
3 | 2022-07-01 11:10:42 | Power Fail
4 | 2022-07-01 11:10:42 | SUS Power Fail
5 | 2022-07-01 11:10:42 | ACPI Wake | S5
6 | 2022-07-01 11:10:42 | Wake Source | Power Button | 0
7 | 2022-07-01 11:10:42 | Chrome OS Developer Mode
8 | 2022-07-01 11:10:42 | Firmware vboot info |
                          boot_mode=Developer |
                          fw_tried=B | fw_try_count=0 |
                          fw_prev_tried=B | fw_prev_result=Unknown
9 | 2022-07-01 11:11:42 | System boot | 361
10 | 2022-07-01 11:11:42 | System Reset
11 | 2022-07-01 11:11:42 | Firmware vboot info |
			  boot_mode=Developer |
			  fw_tried=B | fw_try_count=0 |
			  fw_prev_tried=B | fw_prev_result=Success

localhost # crossystem recovery_request=1
localhost # elogtool list
41 | 2022-07-13 12:13:48 | Firmware vboot info |
			  boot_mode=Manual recovery boot |
		          recovery_reason: 0x1/0 (Recovery requested
			  from legacy utility) | 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: I48b5d54723683cef51e416fc6f58da000507fbcc
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65562
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2022-08-02 07:06:52 +00:00
..
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