lock_chip

#!/bin/sh
# For this to work:
#  - io386 module needs to be enabled in board config (sandy/ivy/haswell know to work)
#  - coreboot config need to enable CONFIG_BOOTMEDIA_LOCK_CONTROLLER=y without enabling CONFIG_INTEL_CHIPSET_LOCKDOWN
#  - Heads is actually doing the CONFIG_INTEL_CHIPSET_LOCKDOWN equivalent here.
# TODO: If more platforms are able to enable CONFIG_INTEL_CHIPSET_LOCKDOWN in the future, have board config export APM_CNT and FIN_CODE and modify this script accordingly

#include ash shell functions (TRACE requires it)
. /etc/ash_functions

TRACE "Under /bin/lock_chip"
if [ "$CONFIG_FINALIZE_PLATFORM_LOCKING_PRESKYLAKE" = "y" ]; then
	APM_CNT=0xb2
	FIN_CODE=0xcb
fi

if [ -n "$APM_CNT" -a -n "$FIN_CODE" ]; then
	echo "Finalizing chipset"
	io386 -o b -b x $APM_CNT $FIN_CODE
else
	echo "NOT Finalizing chipset"
	echo "lock_chip called without valid APM_CNT and FIN_CODE defined under bin/lock_chip."
fi