[XS] Change in coreboot[main]: TEST: use dcfg config to control thermal tuning mechanism

[Sumeet R Pawnikar (Code Review)]

Attention is currently required from: Dinesh Gehlot, Eran Mitrani, Jakub Czapiga, Kapil Porwal, Sumeet R Pawnikar, Tarun.

Hello Dinesh Gehlot, Eran Mitrani, Jakub Czapiga, Kapil Porwal, Subrata Banik, Tarun, build bot (Jenkins),

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/81345?usp=email

to look at the new patch set (#3).

Change subject: TEST: use dcfg config to control thermal tuning mechanism
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TEST: use dcfg config to control thermal tuning mechanism

This is an example on how to use dcfg config to control the
thermal tuning mechanism on specific platform.

For testing purpose here Bit 0 being set represents Generic
DTT UI access control is disabled and Bit 2 being set represents
DTT shell access control is disabled.
Each bit represents different configuration access control
for DTT as per BIOS specification document #640237.

BUG=b:272382080
TEST=Build, boot on rex board and dump SSDT to check DCFG value.
     Also, verified the value over sysfs attribute "production_mode"
     present under /sys/bus/platform/devices/INTC1042:00 path.

Change-Id: I12c84d16102c1678c8f0162af15f34587c978028
Signed-off-by: Sumeet Pawnikar 
---
M src/mainboard/google/rex/variants/rex0/overridetree.cb
1 file changed, 3 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/45/81345/3