[coreboot-gerrit] Change in coreboot[master]: src/security/vboot: Add Support for Intel PTT

[Christian Walter (Code Review)]

Christian Walter has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/34510 )

Change subject: src/security/vboot: Add Support for Intel PTT
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Patch Set 4:
> Patch Set 3:
>
> Why not use the existing VBOOT_MOCK_SECDATA for this? You could add a 'default y if INTEL_PTT' there or 'select' it from CONFIG_INTEL_PTT.

VBOOT_MOCK_SECDATA is actually used if you want to do VBOOT without a TPM. We just stub every function (except the NVRAM read) and go with it. When Intel PTT is used, we do not have access to NVRAM, but we can e.g. extend PCRs. So we can do a verified and measured boot with PTT, if we do not use the NVRAM for antirollback.
So in my opinion it's a different functionality and should not be merged with VBOOT_MOCK_SECDATA.