soc/amd/common: Add a config to keep signed AMD/PSP FW separately

Enabling this config will put signed amd firmwares into
SIGNED_AMDFW_[AB] region which is outside FW_MAIN_[AB]. Vboot only
verifies FW_MAIN_[AB] so these regions will not be verified by vboot,
instead the PSP will verify them.

As a result we have less to load and verify from SPI rom which means
faster boot time.

BUG=b:206909680
TEST=Build Skyrim with modified fmap and Kconfig.

Change-Id: If4fd3cff11a38d82afb8c5ce379f1d1b5b9adfbf
Signed-off-by: Kangheui Won <khwon@chromium.org>
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59867
Reviewed-by: Jon Murphy <jpmurphy@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions