diff options
| author | Keith Short <keithshort@chromium.org> | 2019-02-05 16:15:10 -0700 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-02-13 13:03:33 +0000 |
| commit | e0f340054761086e4c329a2f66bb8f5b6e13d7c9 (patch) | |
| tree | 977ba95155edd474d6d67c4bf61f58ee869c094f /src/include | |
| parent | 91be00ef1be29e6670599aa5e9c297854a928d07 (diff) | |
coreboot: check Cr50 PM mode on normal boot
Under some scenarios the key ladder on the Cr50 can get disabled. If
this state is detected, trigger a reboot of the Cr50 to restore full
TPM functionality.
BUG=b:121463033
BRANCH=none
TEST=Built coreboot on sarien and grunt platforms.
TEST=Ran 'gsctool -a -m disable' and reboot. Verified coreboot sends
VENDOR_CC_IMMEDIATE_RESET command to Cr50 and that the Cr50 resets and
then the platform boots normally.
TEST=Performed Cr50 rollback to 0.0.22 which does not support the
VENDOR_CC_TPM_MODE command, confirmed that platform boots normally and
the coreboot log captures the unsupported command.
Tested-by: Keith Short <keithshort@chromium.org>
Change-Id: I70e012efaf1079d43890e909bc6b5015bef6835a
Signed-off-by: Keith Short <keithshort@chromium.org>
Reviewed-on: https://review.coreboot.org/c/31260
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/elog.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/include/elog.h b/src/include/elog.h index 31891e01ec..f1d5314ff3 100644 --- a/src/include/elog.h +++ b/src/include/elog.h @@ -223,6 +223,9 @@ struct elog_event_mem_cache_update { #define ELOG_SLEEP_PENDING_PM1_WAKE 0x01 #define ELOG_SLEEP_PENDING_GPE0_WAKE 0x02 +/* Cr50 reset to enable TPM */ +#define ELOG_TYPE_CR50_NEED_RESET 0xb2 + struct elog_event_extended_event { u8 event_type; u32 event_complement; |