tree 926d3a202b68e2b6f99eed27cb4970e7e45f687c
parent ee0b21b31c48c2d9bb65a020643271d435edb0d9
author Karthikeyan Ramasubramanian <kramasub@google.com> 1602480069 -0600
committer Commit Bot <commit-bot@chromium.org> 1602799273 +0000

futility/updater: Add quirk to preserve management engine

In recent Intel platforms, updating Management Engine (ME) while SoC is in
S0 state is an unsupported use-case. To work-around this issue for the
devices that are in development, specifically during firmware update,
this quirk is added to preserve the ME region. In the subsequent boot,
ME region is updated as part of boot firmware update upstart script.

BUG=b:165590952
BRANCH=None
TEST=With the quirk enabled, ensured that the ME is preserved under the
following scenario:
chromeos-firmwareupdate --mode=autoupdate
chromeos-firmwareupdate --mode=recovery
futility update --mode=autoupdate -a /usr/sbin/chromeos-firmwareupdate
futility update --mode=recovery -a /usr/sbin/chromeos-firmwareupdate
In other scenarios, ME region is not preserved.

Change-Id: I81a52d11d1fb363b7e07ef3439b927449456b28a
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/2465286
Tested-by: Karthikeyan Ramasubramanian <kramasub@chromium.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Commit-Queue: Karthikeyan Ramasubramanian <kramasub@chromium.org>