tree f9786425a1c45c279ad3df8793d12a33f277dfc6
parent 1ce0f3aab72dab7a74277a8eda6e6605edf106e3
author Michał Żygowski <michal.zygowski@3mdeb.com> 1637498845 +0100
committer Michał Żygowski <michal.zygowski@3mdeb.com> 1638466867 +0000

nb/intel/sandybridge/romstage.c: Configure DPR and initialize TXT

Initialize the DPR register and check if SCLEAN needs to be run.
Allows to reliably boot the platform if ungraceful shutdown occured or
the memory controller has been locked by TXT.

TEST=Dell OptiPlex 9010 with Intel TXT enabled boots successfully
after 4s power button override or power cable unplug when SENTER was
executed. Successfully boot QubesOS 4.0 with TBoot v1.8.2

Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Change-Id: I4b912f121593fa55c11813262f09be1a1055e950
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59523
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>