Matt DeVillier b1e1b2ce08 soc/amd/common/block/gfx: Re-add signature check for vbios cache ... Commit c7b8809f155a ("soc/amd/common/block/gfx: Use TPM-stored hash for vbios cache validation") replaced checking the vbios signature (first two bytes) with checking against a TPM-stored hash, but there exists an edge case where the empty cache can be hashed and therefore never updated with the correct vbios data. To mitigate this, re-add the signature check to ensure that an empty cache will never be hashed to TPM. BUG=b:255812886 BRANCH=skyrim TEST=build/boot skyrim w/selective GOP enabled, flash full firmware image, ensure GOP driver is run until cache updated with valid data and hashed to TPM. Change-Id: Id06a8cfaa44d346fb2eece53dcf74ee46f4a5352 Signed-off-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/74525 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Jason Glenesk <jason.glenesk@gmail.com> Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>		2023-04-26 17:11:14 +00:00
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cezanne	soc/amd: Use ACPI_COMMON_MADT_IOAPIC	2023-04-26 11:05:09 +00:00
common	soc/amd/common/block/gfx: Re-add signature check for vbios cache	2023-04-26 17:11:14 +00:00
glinda	soc/amd: Use ACPI_COMMON_MADT_IOAPIC	2023-04-26 11:05:09 +00:00
mendocino	soc/amd: Use ACPI_COMMON_MADT_IOAPIC	2023-04-26 11:05:09 +00:00
phoenix	soc/amd/phoenix/Kconfig: Update comment	2023-04-26 12:04:58 +00:00
picasso	soc/amd: Use ACPI_COMMON_MADT_IOAPIC	2023-04-26 11:05:09 +00:00
stoneyridge	soc/amd: Use ACPI_COMMON_MADT_IOAPIC	2023-04-26 11:05:09 +00:00