[coreboot-gerrit] Change in coreboot[master]: soc/amd/picasso: Reboot for recovery if no psp workbuf is found

[Martin Roth (Code Review)]

Hello build bot (Jenkins), Patrick Georgi,

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

https://review.coreboot.org/c/coreboot/+/44538

to look at the new patch set (#2).

Change subject: soc/amd/picasso: Reboot for recovery if no psp workbuf is found
......................................................................

soc/amd/picasso: Reboot for recovery if no psp workbuf is found

Instead of halting if the vboot workbuf is not passed to coreboot by the
PSP, reset and reboot into recovery mode.

This process is made more difficult because if the workbuf isn't
available, we can't reboot directly into recovery - the workbuf is
needed for that process to be done through the regular calls, and we
don't want to go around the vboot API and just write into VBNV directly.
To overcome this, we set a CMOS flag, and reset the system.
PSP_verstage checks for this flag so it will update VBNV and reset the
system after generating the workbuf.

BUG=b:152638343
TEST=Simulate the workbuf not being present and verify the reboot
process.

Signed-off-by: Martin Roth 
Change-Id: I049db956a5209904b274747be28ff226ce542316
---
M src/soc/amd/picasso/Kconfig
M src/soc/amd/picasso/Makefile.inc
M src/soc/amd/picasso/bootblock/bootblock.c
M src/soc/amd/picasso/include/soc/psp_transfer.h
M src/soc/amd/picasso/psp_verstage/psp_verstage.c
M src/soc/amd/picasso/psp_verstage/psp_verstage.h
6 files changed, 51 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/38/44538/2