[coreboot-gerrit] [L] Change in coreboot[master]: drivers/smm_payload_interface: Add initial support for SMM payload

[Patrick Rudolph (Code Review)]

Attention is currently required from: Michał Żygowski, Martin L Roth, Benjamin Doron, Paul Menzel, Arthur Heymans.

Patrick Rudolph has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/70378 )

Change subject: drivers/smm_payload_interface: Add initial support for SMM payload
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Patch Set 11:

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/70378/comment/78d2bca0_d4e3b9d8 
PS11, Line 34: The solution here is to initialise SMM in EDK2, following UefiPayload
Mention that is limited to a subset of Intel platforms.

File Documentation/drivers/s3_save_restore.md:

https://review.coreboot.org/c/coreboot/+/70378/comment/061fa34f_8180c73a 
PS8, Line 8: with differing register definitions
> Everything a recent Intel platform needs to globally enable SMIs (and lock this), and enable the 0xB […]

How does your implementation (this patchset) support many silicon generations with differing register definitions?