tree ce7a4f6c21159b3eb72d9fb4c824ff029be9d358
parent 72e63d5e9cf5ae478f076f227ef45a5125bd2442
author Subrata Banik <subratabanik@google.com> 1682506916 +0530
committer Subrata Banik <subratabanik@google.com> 1683024661 +0000

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 <subratabanik@google.com>
Change-Id: Ief5d79736cc11a0a31ca2889128285795f8b5aae
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74783
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>