Coreboot
Building
To build your own coreboot bios:
$ git clone http://review.coreboot.org/coreboot.git; cd coreboot
$ nix-shell -p ncurses.dev bison flex clang zlib
$ NIX_LDFLAGS="$NIX_LDFLAGS -lncurses" make menuconfig
$ NIX_HARDENING_ENABLE="${NIX_HARDENING_ENABLE/ format/}" make crossgcc
$ make