#!/bin/sh
# vim: set sw=4 ts=4 sts=4 et :

set -e

. "${CONFIGDIR:=${PWD}}"/config

O="${1}"

GRUB_MODULES='
boot
echo
efi_gop
eval
fat
gzio
linux
loadenv
normal
part_gpt
probe
regexp
serial
squash4
test
xzio
zstd
'

echo 'Creating GRUB image ...'
mkdir -p "${O}"/efi-part/EFI/BOOT
grub-mkimage \
    -O arm64-efi \
    -o "${O}"/efi-part/EFI/BOOT/BOOTAA64.efi \
    -d /usr/${target}/usr/lib/grub/arm64-efi \
    -p /EFI/gentoo \
    ${GRUB_MODULES}

echo 'Generating GRUB configuration file ...'
mkdir -p "${O}"/efi-part/EFI/gentoo
cp -uv grub.cfg "${O}"/efi-part/EFI/gentoo
grub-editenv "${O}"/efi-part/EFI/gentoo/grubenv set rootflags='ro'
grub-editenv "${O}"/efi-part/EFI/gentoo/grubenv set default=0
grub-editenv "${O}"/efi-part/EFI/gentoo/grubenv set timeout=5