Aseda Aboagye 4ed4044329 cr50: Decrement retry counter on manual reboots. ...

Currently, manually triggered reboots cause the retry counter to be
incremented.  However, if the system is responsive enough to process the
reboot commands from either the console or TPM vendor command, we can
assume that the image is "ok".  This commit changes the Cr50 behaviour
to decrement the retry counter when a reboot is issued on the console or
the TPM vendor command is received.

BUG=chrome-os-partner:62687
BRANCH=None
TEST=Flash cr50. Flash an older image in the other slot. Enter the
reboot command on the console over 10 times and verify that retry
counter never exceeds RW_BOOT_MAX_RETRY_COUNT and older image is never
executed.

CQ-DEPEND=CL:444264

Change-Id: Ic35bdc63c4141834584a00a7ecceab2abe8dfc21
Signed-off-by: Aseda Aboagye <aaboagye@google.com>
Reviewed-on: https://chromium-review.googlesource.com/443330
Commit-Ready: Aseda Aboagye <aaboagye@chromium.org>
Tested-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>

2017-02-18 17:26:59 -08:00

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