[M] Change in coreboot[master]: soc/intel/common: Introduce API to get the FSP Reset Status

[Subrata Banik (Code Review)]

Attention is currently required from: Derek Huang, Paul Menzel, Kapil Porwal, Andrey Petrov.

Hello build bot (Jenkins), Tarun Tuli, Derek Huang, Kapil Porwal, Arthur Heymans, Eric Lai, Andrey Petrov,

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

https://review.coreboot.org/c/coreboot/+/74783

to look at the new patch set (#3).

Change subject: soc/intel/common: Introduce API to get the FSP Reset Status
......................................................................

soc/intel/common: Introduce API to get the FSP Reset Status

This patch creates a function to read the FSP API Reset Status. This
function relies on the FSP Scheduled Reset HOB which holds the reset
type (warm/cold/shutdown) information along with any platform specific
reset need (like global reset).

Ideally FSP API should be able to return the status (both success and
error code) upon exiting the FSP API but unfortunately there are some
scenarios in ADL/RPL FSP where MultiPhaseSiInit API is unable to return
any ERROR status. Hence, this function provides an additional hook to
read the FSP reset status by reading the dedicated HOB without relying
on the FSP API exit status code.

Additionally, create FSP_MULTIPHASE_SI_INIT_RETURN_BROKEN config option
to handle broken FSP API return status issue.

Any SoC platform that selects the `FSP_MULTIPHASE_SI_INIT_RETURN_BROKEN`
config will call into this newly added API to get the FSP return status
from MultiPhaseSiInit.

BUG=b:278665768
TEST=Able to select FSP_MULTIPHASE_SI_INIT_RETURN_BROKEN for ADL/RPL SoC
code and call into this API to know the return status from
MultiPhaseSiInit FSP API.

Signed-off-by: Subrata Banik 
Change-Id: Ief5d79736cc11a0a31ca2889128285795f8b5aae
---
M src/drivers/intel/fsp2_0/Kconfig
M src/soc/intel/common/fsp_reset.c
M src/soc/intel/common/reset.h
3 files changed, 107 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/83/74783/3