#!/bin/bash

set -euxo pipefail

ARCH=$(uname -m)
DEST=${2:-/tmp/esp.img}
OS=${1:-sles}

BOOTEFI=BOOTX64.efi
GRUBEFI=grubx64.efi

dd bs=1024 count=6400 if=/dev/zero of=$DEST
mkfs.msdos -F 12 -n 'ESP_IMAGE' $DEST

mkdir -p /boot/efi/EFI/BOOT
cp -L /usr/lib64/efi/shim.efi /boot/efi/EFI/BOOT/$BOOTEFI
mkdir -p /boot/efi/EFI/$OS
#cp /usr/share/grub2/x86_64-efi/grub.efi /boot/efi/EFI/$OS/$GRUBEFI
cp /usr/share/grub2/x86_64-efi/grub.efi /boot/efi/EFI/$OS/grub.efi

mmd -i $DEST EFI
mmd -i $DEST EFI/BOOT
mcopy -i $DEST -v /boot/efi/EFI/BOOT/$BOOTEFI ::EFI/BOOT
#mcopy -i $DEST -v /boot/efi/EFI/$OS/$GRUBEFI ::EFI/BOOT
mcopy -i $DEST -v /boot/efi/EFI/$OS/grub.efi ::EFI/BOOT
mdir -i $DEST ::EFI/BOOT;