soc/intel/common/block/cpu: API to check if TME is supported

As per the Alder Lake FAS coreboot shall detect the existence of TME
feature by running the CPUID instruction:
CPUID leaf 7/sub-leaf 0
Return Value in ECX [bit 13]=1

If TME is supported then only access to TME MSRs are allowed otherwise
accessing those MSRs would result in GP#.

TEST=Able to detect the existence of TME feature across different
Alder Lake and Meteor Lake CPU SKUs.

Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: Ibd4fcf15a66d27748ac7fbb52b18d7264b901cd8
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66749
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tarun Tuli <taruntuli@google.com>

0 files changed, 0 insertions, 0 deletions