at it's simplest, copy contents of CD to the root of the tftp server root of
copy efi/boot/bootx64.efi to the root of the tftp server dir, making a reference to it in dhcpd.conf
copy efi/boot/boot.cfg to the root of the tftp server dir.
and it will boot. It will be the only thing that boots.
i'd like to integrate this into the normal grub.cfg. Time will tell.