futility: [deferredupdates] Defer setting firmware cookies
This is the firmware part of go/deferredupdates.
During autoupdates, it's required to defer firmware cookies (a.k.a. slot
switching) to not try the updated RW firmware. Instead it is deferred
for the values to be updated at a later time, when the actual update
should be applied.
Since there is not a clear communication method between
futility and postinstall+autoupdater, it'll be the case that STATUS will
be used as the IPC for postinstall+autoupdater to determine when to
update firmware cookies w/ a UUID.
```
// autoupdate
localhost ~ # chromeos-firmwareupdate --mode=autoupdate --wp=1
Machine Model: gimble
Write Protect: HW=0 SW=0
Last Boot Version: RO=Google_Gimble.14498.0.0 ACT/B=Google_Gimble.14498.0.0
Firmware Updater: RO=Google_Gimble.14505.93.0 RW=Google_Gimble.14505.93.0
>> Starting firmware updater.
>> Target image: images/bios-gimble.ro-14505-93-0.rw-14505-93-0.bin (RO:Google_Gimble.14505.93.0, RW/A:Google_Gimble.14505.93.0, RW/B:Google_Gimble.14505.93.0).
>> Current system: <sys-flash> (RO:Google_Gimble.14498.0.0, RW/A:Google_Gimble.14505.93.0, RW/B:Google_Gimble.14498.0.0).
>> Write protection: 1 (enabled; HW=1, SW=1).
>> TRY-RW UPDATE: Updating RW_SECTION_A to try on reboot.
>> DONE: Firmware updater exits successfully.
fw_prev_result = trying # [RO/str] Firmware result of previous boot
fw_prev_tried = B # [RO/str] Firmware tried on previous boot (A or B)
fw_result = success # [RW/str] Firmware result this boot
fw_tried = B # [RO/str] Firmware tried this boot (A or B)
fw_try_count = 10 # [RW/int] Number of times to try fw_try_next
fw_try_next = A # [RW/str] Firmware to try next (A or B)
fw_vboot2 = 1 # [RO/int] 1 if firmware was selected by vboot2 or 0 otherwise
fwb_tries = 10 # [RW/int] Try firmware B count
fwid = Google_Gimble.14498.0.0 # [RO/str] Active firmware ID
fwupdate_tries = 0 # [RW/int] Times to try OS firmware update (inside kern_nv)
mainfw_act = B # [RO/str] Active main firmware
// deferupdate HOLD
localhost ~ # chromeos-firmwareupdate --mode=deferupdate_hold --wp=1
Machine Model: gimble
Write Protect: HW=0 SW=0
Last Boot Version: RO=Google_Gimble.14498.0.0 ACT/B=Google_Gimble.14498.0.0
Firmware Updater: RO=Google_Gimble.14505.93.0 RW=Google_Gimble.14505.93.0
>> Starting firmware updater.
>> Target image: images/bios-gimble.ro-14505-93-0.rw-14505-93-0.bin (RO:Google_Gimble.14505.93.0, RW/A:Google_Gimble.14505.93.0, RW/B:Google_Gimble.14505.93.0).
>> Current system: <sys-flash> (RO:Google_Gimble.14498.0.0, RW/A:Google_Gimble.14505.93.0, RW/B:Google_Gimble.14498.0.0).
>> Write protection: 1 (enabled; HW=1, SW=1).
>> TRY-RW UPDATE: Updating RW_SECTION_A to try on reboot.
>> DEFER UPDATE: Defer setting cookies for RW_SECTION_A.
>> DONE: Firmware updater exits successfully.
fw_prev_result = trying # [RO/str] Firmware result of previous boot
fw_prev_tried = B # [RO/str] Firmware tried on previous boot (A or B)
fw_result = success # [RW/str] Firmware result this boot
fw_tried = B # [RO/str] Firmware tried this boot (A or B)
fw_try_count = 0 # [RW/int] Number of times to try fw_try_next
fw_try_next = B # [RW/str] Firmware to try next (A or B)
fw_vboot2 = 1 # [RO/int] 1 if firmware was selected by vboot2 or 0 otherwise
fwb_tries = 0 # [RW/int] Try firmware B count
fwid = Google_Gimble.14498.0.0 # [RO/str] Active firmware ID
fwupdate_tries = 0 # [RW/int] Times to try OS firmware update (inside kern_nv)
mainfw_act = B # [RO/str] Active main firmware
// deferupdate APPLY
localhost ~ # chromeos-firmwareupdate --mode=deferupdate_apply --wp=1
Machine Model: gimble
Write Protect: HW=0 SW=1
Last Boot Version: RO=Google_Gimble.14498.0.0 ACT/B=Google_Gimble.14498.0.0
Firmware Updater: RO=Google_Gimble.14505.106.0 RW=Google_Gimble.14505.106.0
>> Starting firmware updater.
INFO: update_firmware: Apply defer updates, only setting cookies for the next boot slot.
>> DONE: Firmware updater exits successfully.
fw_prev_result = trying # [RO/str] Firmware result of previous boot
fw_prev_tried = B # [RO/str] Firmware tried on previous boot (A or B)
fw_result = success # [RW/str] Firmware result this boot
fw_tried = B # [RO/str] Firmware tried this boot (A or B)
fw_try_count = 10 # [RW/int] Number of times to try fw_try_next
fw_try_next = A # [RW/str] Firmware to try next (A or B)
fw_vboot2 = 1 # [RO/int] 1 if firmware was selected by vboot2 or 0 otherwise
fwb_tries = 10 # [RW/int] Try firmware B count
fwid = Google_Gimble.14498.0.0 # [RO/str] Active firmware ID
fwupdate_tries = 0 # [RW/int] Times to try OS firmware update (inside kern_nv)
mainfw_act = B # [RO/str] Active main firmware
```
BUG=b:232304971
TEST=chromeos-firmwareupdate w/ comment above
BRANCH=None
Signed-off-by: Jae Hoon Kim <kimjae@chromium.org>
Change-Id: Idcfc5864a2cfc2b46a8b936bbab61e3da7c62596
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/3661357
Commit-Queue: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@chromium.org>
1 file changed
