[coreboot-gerrit] Change in coreboot[master]: cpu/x86/entry16: Do not disable cache when Boot Guard is supported

[Angel Pons (Code Review)]

Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/38252 )

Change subject: cpu/x86/entry16: Do not disable cache when Boot Guard is supported
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Patch Set 7:

(1 comment)

https://review.coreboot.org/c/coreboot/+/38252/7//COMMIT_MSG 
Commit Message:

https://review.coreboot.org/c/coreboot/+/38252/7//COMMIT_MSG@10 
PS7, Line 10: BIOS is forbidden to disable
            : cache while in NEM mode with BtG enabled.
> Can you please add a reference to the specification?

This kind of stuff is only documented in the `Boot Guard BIOS Writer's Guide`. As usual with BWGs, it's Intel Confidential.

In any case, feel free to add:

As per the Boot Guard BWG, BIOS is forbidden to disable cache while in NEM mode with BtG enabled.