00dbf449c9
When coreboot checks the TPM and key-ladder state it issues a reboot of the Cr50 with a delay parameter. Older Cr50 code doesn't support the delay parameter and reboots immediately, which prevented coreboot from running the mainboard specific code needed for the AP to come back up. This change calls mainboard_prepare_cr50_reset() prior to sending the VENDOR_CC_IMMEDIATE_RESET command. This change also fixes a false error message from the coreboot log that indicated "Unexpected Cr50 TPM mode 3" when the Cr50 key ladder is disabled. BUG=b:130830178 BRANCH=none TEST=build coreboot on sarien and grunt platforms. TEST=Load Cr50 v3.15, run 'gsctool -a -m disable; reboot'. Verify corebot send the VENDOR_CC_IMMEDIATE_RESET command and that the AP boots normally. Verify event log shows "cr50 Reset Required" TEST=Force Cr50 automatic update. Verify event log shows "cr50 Update Reset". Change-Id: Ib05c9cfde8e87daffd4233114263de5b30822872 Signed-off-by: Keith Short <keithshort@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/32365 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com> |
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