[coreboot-gerrit] Change in coreboot[master]: soc/amd/common/psp: Add SmmInfo command

[Felix Held (Code Review)]

Hello build bot (Jenkins), Marshall Dawson, Marshall Dawson, Angel Pons,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/40295

to look at the new patch set (#5).

Change subject: soc/amd/common/psp: Add SmmInfo command
......................................................................

soc/amd/common/psp: Add SmmInfo command

Implement the MboxBiosCmdSmmInfo function to inform the PSP of the SoC's
SMM configuration. Once the BootDone command is sent, the PSP only
responds to commands where the buffer is in SMM memory.

Set aside a region for the core-to-PSP command buffer and the
PSP-to-core mailbox.  Also add an SMM flag, which the PSP expects to
read as non-zero during an SMI.

The soc should call the new function only from an SMI handler.  Add
calls to soc functions for the soc to populate the trigger info and
register info (v2 only).

BUG=b:153677737

Change-Id: I10088a53e786db788740e4b388650641339dae75
Signed-off-by: Marshall Dawson 
---
M src/soc/amd/common/block/include/amdblocks/psp.h
M src/soc/amd/common/block/psp/psp.c
M src/soc/amd/common/block/psp/psp_def.h
M src/soc/amd/common/block/psp/psp_gen1.c
M src/soc/amd/common/block/psp/psp_gen2.c
5 files changed, 160 insertions(+), 14 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/95/40295/5