tree 43dc6210dd440085cf77fa103685b63559c6bb38
parent a521d66116ce178d36f94b794c4546f090a40a8b
author Kapil Porwal <kapilporwal@google.com> 1669726313 +0530
committer Felix Held <felix-coreboot@felixheld.de> 1669992323 +0000

soc/intel/meteorlake: Refactor `pmc_lockdown_cfg` function

This patch refactors the `pmc_lockdown_cfg()` to remove the helper
functions and uses the `setbits32` function to enforce bit locking
as applicable.

This patch also locks PMC features like:
1. Debug mode configuration and host read access to PMC XRAM.
2. PMC soft strap message interface.
3. PMC static function.
and then calls into the PMC IPC function that informs about PCI
enumeration.

Port of -
1. commit 2eec87a553ec ("soc/intel/alderlake: Refactor
`pmc_lockdown_cfg` function")
2. commit bae4a0b5a1e4 ("soc/intel/alderlake: Implement PMC
feature lock")
3. commit c2570dc99800 ("soc/intel/alderlake: Implement PMC
soft strap interface lock")
4. commit f021952c4067 ("soc/intel/alderlake: Implement PMC
static function lock")
5. commit 457891415380 ("soc/intel/alderlake: Call into PMC
IPC to inform PCI enumeration done")

BUG=none
TEST=Boot to OS on google/rex.

Register values in OS -
# busybox devmem 0xfe0018d4 32 #bit31
0x80000000
# busybox devmem 0xfe001024 32 #bit21,18,17,4
0x00362610
# busybox devmem 0xfe001818 32 #bit27,22
0x2B4F0004
# busybox devmem 0xfe00104c 32 #bit0
0x00000001


Signed-off-by: Kapil Porwal <kapilporwal@google.com>
Change-Id: I3622748d8fecef69c60bb3fe9bfe68fc126764b7
Reviewed-on: https://review.coreboot.org/c/coreboot/+/70132
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>