From a2f08aa5c4420053d80ca23992b9e61888976f7c Mon Sep 17 00:00:00 2001 From: Jon Murphy Date: Tue, 5 Sep 2023 11:43:14 -0600 Subject: drivers/tpm: Add tpm failure handling Add additional failure mode logic for the TPM to enable an automated recovery mode for GSC hangs. BUG=b:296439237 TEST=Force the error by hard coding the return code and observe the device entering hibernate. BRANCH=None Change-Id: Ieec7e9227d538130354dea8b772d0306cdda1237 Signed-off-by: Jon Murphy Reviewed-on: https://review.coreboot.org/c/coreboot/+/77667 Reviewed-by: Eric Lai Reviewed-by: Julius Werner Tested-by: build bot (Jenkins) --- src/security/tpm/Kconfig | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'src/security/tpm') diff --git a/src/security/tpm/Kconfig b/src/security/tpm/Kconfig index 39134c1c71..c06150dacd 100644 --- a/src/security/tpm/Kconfig +++ b/src/security/tpm/Kconfig @@ -172,3 +172,12 @@ config PCR_RUNTIME_DATA default 3 endmenu # Trusted Platform Module (tpm) + +config TPM_SETUP_HIBERNATE_ON_ERR + bool + depends on EC_GOOGLE_CHROMEEC + help + Select this to force a device to hibernate on the next AP shutdown when a TPM + setup error occurs. This will cause a cold boot of the system and offer an + opportunity to recover the TPM should it be hung. This is only effective if + the Z-State brings the power rail down. -- cgit v1.2.3