Benjamin Doron has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/40830 )
Change subject: [WIP]security/intel: Add option to eanble SMM flash access only ......................................................................
Patch Set 1:
(1 comment)
https://review.coreboot.org/c/coreboot/+/40830/1/src/soc/intel/common/pch/lo... File src/soc/intel/common/pch/lockdown/lockdown.c:
https://review.coreboot.org/c/coreboot/+/40830/1/src/soc/intel/common/pch/lo... PS1, Line 94: soc_lockdown_config
Skylake follows the same procedure (_set_bios_interface_lock_down, _set_lock_enable) on the LPC in ` […]
No, it appears that configuration of the LPC there is to lock it. BIOS accesses go to SPI on my board (likely on most, if not all, boards).