tree 010a2f66ecdeb3d31e3a60275a923a1368007280
parent 8eb3a342d1bbb2bc26fda98683a03574bef098f9
author Angel Pons <th3fanbus@gmail.com> 1613757414 +0100
committer Patrick Georgi <pgeorgi@google.com> 1614762032 +0000

soc/intel: Backport SMRR locking support

Backport commit 0cded1f116 (soc/intel/tigerlake: Add SMRR Locking
support) to other client platforms. The SMRR MSRs are core-scoped on
Skylake and Ice Lake, at least. Older platforms do not support SMRR
locking, but now there's seven copies of the same file in the tree. A
follow-up will deduplicate smmrelocate.c files into common CPU code.

I cannot test Jasper Lake nor Elkhart Lake, but they should still work.
As per documentation I do not have access to, Elkhart Lake seems to
support SMRR locking. However, Jasper Lake documentation is unclear.

Tested on Purism Librem Mini v1 (WHL-U i7-8565U), still boots and SMRR
MSRs have the same value on all cores/threads (i7-8565U supports HT).

Change-Id: Icbee0985b04418e83cbf41b81f00934f5a663e30
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50936
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Nico Huber <nico.h@gmx.de>