Change in coreboot[master]: cpu/x86/smm: Add smm_board_info for SMM that can be set from mainboard

[Johnny Lin (Code Review)]

Attention is currently required from: Marc Jones, Nico Huber, Patrick Rudolph, Jonathan Zhang, Rocky Phagura, Jingle Hsu, Angel Pons, Arthur Heymans, Morgan Jang, Kyösti Mälkki.
Johnny Lin has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/49460 )

Change subject: cpu/x86/smm: Add smm_board_info for SMM that can be set from mainboard
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Patch Set 12:

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/49460/comment/b058ce61_4c9a2a74 
PS9, Line 16: for SMM.
> I couldn't find any discussion about this issue. Sorry if I just […]

Yes it's too much time for every SMI, but if only once it seems acceptable to me.

Patchset:

PS9:
> I don't understand why OVERRIDE_CONSOLE_LOGLEVEL is […]

At the beginning I tried to build vpd driver into SMM but saw build errors related to init_vpd_rdevs_from_cbmem(), so I didn't continue that path.., but in my opinion except adding the vpd driver to SMM could be less ideal, if only reading VPD once and cached in SMM it seems acceptable to me.

I updated according to your second option "Use a generic mechanism to pass board-specific information", hope that I understand correctly.