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#!/usr/bin/env bash
# SPDX-License-Identifier: LGPL-2.1-or-later
set -eo pipefail
out="${1:?}"
systemd_efi="${2:?}"
boot_stub="${3:?}"
splash_bmp="${4:?}"
efi_dir="$(bootctl -p)"
entry_dir="${efi_dir}/$(cat /etc/machine-id)/$(uname -r)"
# create GPT table with EFI System Partition
rm -f "$out"
dd if=/dev/null of="$out" bs=1M seek=512 count=1 status=none
parted --script "$out" "mklabel gpt" "mkpart ESP fat32 1MiB 511MiB" "set 1 boot on"
# create FAT32 file system
LOOP="$(losetup --show -f -P "$out")"
mkfs.vfat -F32 "${LOOP}p1"
mkdir -p mnt
mount "${LOOP}p1" mnt
mkdir -p mnt/EFI/{BOOT,systemd}
cp "$systemd_efi" mnt/EFI/BOOT/BOOTX64.efi
if [ -e /boot/shellx64.efi ]; then
cp /boot/shellx64.efi mnt/
fi
mkdir mnt/EFI/Linux
echo -n "foo=yes bar=no root=/dev/fakeroot debug rd.break=initqueue" >mnt/cmdline.txt
objcopy \
--add-section .osrel=/etc/os-release --change-section-vma .osrel=0x20000 \
--add-section .cmdline=mnt/cmdline.txt --change-section-vma .cmdline=0x30000 \
--add-section .splash="$splash_bmp" --change-section-vma .splash=0x40000 \
--add-section .linux="${entry_dir}/linux" --change-section-vma .linux=0x2000000 \
--add-section .initrd="${entry_dir}/initrd" --change-section-vma .initrd=0x3000000 \
"$boot_stub" mnt/EFI/Linux/linux-test.efi
# install entries
mkdir -p mnt/loader/entries
echo -e "timeout 3\n" > mnt/loader/loader.conf
echo -e "title Test\nefi /test\n" > mnt/loader/entries/test.conf
echo -e "title Test2\nlinux /test2\noptions option=yes word number=1000 more\n" > mnt/loader/entries/test2.conf
echo -e "title Test3\nlinux /test3\n" > mnt/loader/entries/test3.conf
echo -e "title Test4\nlinux /test4\n" > mnt/loader/entries/test4.conf
echo -e "title Test5\nefi /test5\n" > mnt/loader/entries/test5.conf
echo -e "title Test6\nlinux /test6\n" > mnt/loader/entries/test6.conf
sync
umount mnt
rmdir mnt
losetup -d "$LOOP"
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