Add core boot compilation support for grub2.
https://packages.debian.org/sid/grub-coreboot-bin
Debian has a related package.
https://www.gnu.org/software/grub/manual/grub/grub.html
grub2 itself also provides support for coreboot (i386-coreboot
).
https://blogs.coreboot.org/blog/category/grub2/
This is helpful for achieving complete full disk encryption.