tree f06dc54292093fa2db032a080399359d2e2f6e67
parent 386ef64fb2ac84b88b948fcc0d16096d9325e7a3
author Pratikkumar Prajapati <pratikkumar.v.prajapati@intel.com> 1686014541 -0700
committer Subrata Banik <subratabanik@google.com> 1691123622 +0000

soc/intel/meteorlake: Generate new TME key on each warm boot

Enable config TME_KEY_REGENERATION_ON_WARM_BOOT for Intel Meteor
Lake SOCs. This config allows Intel FSP to programs TME engine to
generate a new key for each warm boot and exclude CBMEM region
from being encrypted by TME.

Bug=b:276120526
TEST= Boot up the system, generate kernel crash using following
commands:

$ echo 1 > /proc/sys/kernel/sysrq
$ echo "c" > /proc/sysrq-trigger

System performs warm boot automatically. Once it is booted,
execute following commands in linux console of the DUT and confirm
ramoops can be read.

$ cat /sys/fs/pstore/console-ramoops-0

S0ix also tested and found working.

Signed-off-by: Pratikkumar Prajapati <pratikkumar.v.prajapati@intel.com>
Change-Id: I3161ab99b83fb7765646be31978942f271ba1f9e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75627
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>