calculate-overlay/profiles/templates/3.6/6_ac_builder_iso/5_setup/sys-boot/grub/uefi_isohibryd

# Calculate run=/bin/bash

IMAGE_DIR=#-cl_chroot_path-#
CDROOT_DIR=#-cl_chroot_path-#/#-cl_root_path-#
EFI_IMAGE_DIR=${CDROOT_DIR}/efi-image.dir
BOOT_GRUB_DIR=${EFI_IMAGE_DIR}/boot/grub
CD_GRUB_DIR=${CDROOT_DIR}/boot/grub
MEMDISK=${CDROOT_DIR}/memdisk.img
ID_FILE=id${RANDOM}.uefi

rm -f ${CDROOT_DIR}/id*.uefi
touch ${CDROOT_DIR}/${ID_FILE}

mkdir -p ${BOOT_GRUB_DIR}

cat >${BOOT_GRUB_DIR}/grub.cfg <<EOF
search --file --set=root /${ID_FILE}
set prefix=(\$root)/boot/grub
source \$prefix/x86_64-efi/grub.cfg
EOF

makefat() {
	IMG=$1
	SOURCESIZE=$2
	SPT=$3
	rm -f "$IMG"
	mkfs.fat -C -v "$IMG" $(( ($SOURCESIZE / 1024 + 64) / $SPT * $SPT )) 2>/dev/null |
		sed -rn 's/.* ([0-9]+) sectors per track.*/\1/p'
}

for i in ${IMAGE_DIR}/usr/lib/grub/x86_64-efi/part_*.mod;do echo insmod `basename $i .mod`;done >${CD_GRUB_DIR}/x86_64-efi/grub.cfg
echo "source /boot/grub/grub.cfg" >>${CD_GRUB_DIR}/x86_64-efi/grub.cfg
tar cf - -C "${EFI_IMAGE_DIR}" boot >${MEMDISK}
BOOTEFI="${CDROOT_DIR}/bootx64.efi"
grub-mkimage -O x86_64-efi -d ${IMAGEDIR}/usr/lib/grub/x86_64-efi -m ${MEMDISK} -o "${BOOTEFI}" -p '(memdisk)/boot/grub' search iso9660 configfile normal memdisk tar part_msdos fat
BOOTEFISIZE=$(stat -c %s "${BOOTEFI}")
EFIIMG="${CD_GRUB_DIR}/efi.img"
SECTORS=$(makefat "${EFIIMG}" $BOOTEFISIZE 32)
if [[ $SECTORS -ne 32 ]]
then
	makefat "${CD_GRUB_DIR}/efi.img" $BOOTEFISIZE $SECTORS &>/dev/null
fi
mmd -i "${EFIIMG}" ::efi
mmd -i "${EFIIMG}" ::efi/boot
mcopy -i "${EFIIMG}" "${BOOTEFI}" ::efi/boot/bootx64.efi
rm "${BOOTEFI}"
rm ${MEMDISK}
rm -r "${EFI_IMAGE_DIR}"
exit 0