tree cbe8e5cbffdfff40d97b96661a73d9e90e9496dd
parent c1ce6f80c44b19fccf95f6e5a2f0a33d19a41115
author Matt DeVillier <matt.devillier@puri.sm> 1606944934 -0600
committer Hung-Te Lin <hungte@chromium.org> 1608100131 +0000

mb/purism/librem_cnl: Use FMAP-based SPD cache

Use a FMAP region to cache SPD data, providing improvements in boot
time and detection of change in DIMM population (which FSP will
sometimes fail to detect / fail to invalidate the MRC cache).

Adapted from implementation used in google/hatch.

Test: build/boot Librem Mini v2, verify SPD cache used, changes
in DIMM population properly detected.

Change-Id: I15cb9aa8b00d39d098a0f901aee026bac1161a80
Signed-off-by: Matt DeVillier <matt.devillier@puri.sm>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48549
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>