grit-iso/releng/efiboot/loader/entries/archiso-x86_64-cd.conf

title   Arch Linux archiso x86_64 UEFI CD
linux   /EFI/archiso/vmlinuz.efi
initrd  /EFI/archiso/archiso.img
options archisobasedir=%INSTALL_DIR% archisolabel=%ARCHISO_LABEL%