Change in coreboot[master]: mb/google/guybrush: Add PSP_S0I3_RESUME_VERSTAGE Kconfig option

[Rob Barnes (Code Review)]

Attention is currently required from: Jason Glenesk, Nico Huber, Raul Rangel, Marshall Dawson, Felix Held.
Rob Barnes has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/60024 )

Change subject: mb/google/guybrush: Add PSP_S0I3_RESUME_VERSTAGE Kconfig option
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Patch Set 2:

(1 comment)

Patchset:

PS2:
> Ah, so there's hardware init because verstage runs before the bootblock, […]

bootblock is not running during s0i3 resume, just verstage.

On AMD, S0i3 is only entered after explicit request from Kernel. The kernel needs to send a shutdown command to the TPM before reset is asserted so the TPM state can be preserved and restored.