soc/intel/common/cse: Add support for sending CSE End-of-Post message

The CSE expects the boot firmware to send it an End-of-Post message
before loading the OS. This is a security feature, and is done to ensure
that the CSE will no longer perform certain sensitive commands that are
not intended to be exposed to the OS.

If processing the EOP message fails in any way on a ChromeOS build, (and
not already in recovery mode), recovery mode will be triggered,
otherwise the CSME BWG will be followed, which is in the following
commit.

BUG=b:191362590

Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Change-Id: I6f667905f759cc2337daca4cc6e09694e68ab7e8
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55631
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>

0 files changed, 0 insertions, 0 deletions