soc/amd/common/smm: Add option for late SMM locking

Pre-Zen SoCs like Stoneyridge call into an AGESA binary as part of S3
resume, which will fail if SMM is locked, causing the device to
(eventually) cold boot. To mitigate this, add a new Kconfig to enable
"late" SMM locking, which restores the previous behavior prior to
commit 43ed5d253422 ("cpu/amd: Move locking SMM as part of SMM init").

TEST=tested with rest of patch train

Change-Id: I9971814415271a6a107c327523a0a7c188a91df6
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78352
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions