[S] Change in coreboot[main]: drivers/smmstore: add logic to disable capsule update handling code

[Sergii Dmytruk (Code Review)]

Attention is currently required from: Arthur Heymans, Benjamin Doron, Felix Held, Martin L Roth, Patrick Rudolph.

Sergii Dmytruk has posted comments on this change by Sergii Dmytruk. ( https://review.coreboot.org/c/coreboot/+/83425?usp=email )

Change subject: drivers/smmstore: add logic to disable capsule update handling code
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Patch Set 14:

(1 comment)

Patchset:

PS10:
> Thanks for the explanation! So, if I'm understanding this right, coreboot only has to gather and coa […]

Correct.  It takes at least 2 reboots (assuming ME is disabled and doesn't need to be re-enabled): warm reset to let the firmware perform an update and reset of any kind to boot with updated firmware.

Changing state of ME takes a hard reset, which can result in 4 resets in total.  That seems to be in line with how proprietary firmware is being updated (boot followed by a reset to toggle ME state is quite fast and might not be very obvious for the end user that it even occurs).

By the way, you resolved the comment but left -1, was that intentional?