[coreboot-gerrit] Change in coreboot[master]: soc/intel/car: Add support for bootguard CAR

[Angel Pons (Code Review)]

Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/36682 )

Change subject: soc/intel/car: Add support for bootguard CAR
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Patch Set 6:

(1 comment)

https://review.coreboot.org/c/coreboot/+/36682/6/src/soc/intel/common/block/... 
File src/soc/intel/common/block/cpu/car/cache_as_ram.S:

https://review.coreboot.org/c/coreboot/+/36682/6/src/soc/intel/common/block/... 
PS6, Line 214: 	clear_car
> on Purley bit0 in MSR 0x139 is set when B_BOOT_GUARD_SACM_INFO_CAPABILITY is set in BOOTGUARD_MSR. […]

Just remembered another thing that needs to be done: Stop the PBE timer before trying to do MP init. Otherwise, sending SIPIs to wake up the APs causes a system reset. To stop that timer, write one to MSR 0x139 bit 0.