#!/bin/sh
#
# Module: mkisoimages.sh
# Author: Jordan K Hubbard
# Date:   22 June 2001
#
# $FreeBSD$
#
# This script is used by release/Makefile to build the (optional) ISO images
# for a FreeBSD release.  It is considered architecture dependent since each
# platform has a slightly unique way of making bootable CDs.  This script
# is also allowed to generate any number of images since that is more of
# publishing decision than anything else.
#
# Usage:
#
# mkisoimages.sh image-label image-name obj-dir root-dir
#
# image-label is the ISO image label
# image-name is the filename of the resulting ISO image
# obj-dir is the built object tree
# root-dir contains the image contents

if [ $# -lt 4 ]; then
	echo "Usage: $0 image-label image-name obj-dir root-dir"
	exit 1
fi

LABEL="$1"; shift
NAME="$1"; shift
OBJDIR="$1"; shift
ROOTDIR="$1"; shift

if [ -z $ETDUMP ]; then
	ETDUMP=$OBJDIR/usr/bin/etdump
fi

if [ -z $MAKEFS ]; then
	MAKEFS=$OBJDIR/usr/sbin/makefs
fi

if [ -z $MKIMG ]; then
	MKIMG=$OBJDIR/usr/bin/mkimg
fi

# This is highly x86-centric and will be used directly below.
bootable="-o bootimage=i386;$OBJDIR/boot/cdboot -o no-emul-boot"

# Make EFI system partition (should be done with makefs in the future)
dd if=/dev/zero of=efiboot.img bs=4k count=200
device=`mdconfig -a -t vnode -f efiboot.img`
newfs_msdos -F 12 -m 0xf8 /dev/$device
mkdir efi
mount -t msdosfs /dev/$device efi
mkdir -p efi/efi/boot
cp "$OBJDIR/boot/loader.efi" efi/efi/boot/bootx64.efi
umount efi
rmdir efi
mdconfig -d -u $device
bootable="$bootable -o bootimage=i386;efiboot.img -o no-emul-boot -o platformid=efi"

publisher="iXsystems Inc.  https://www.ixsystems.com/"
$MAKEFS -t cd9660 $bootable -o rockridge -o label="$LABEL" \
    -o publisher="$publisher" "$NAME" "$ROOTDIR"
rm -f efiboot.img

# Look for the EFI System Partition image we dropped in the ISO image.
for entry in `$ETDUMP --format shell $NAME`; do
	eval $entry
	if [ "$et_platform" = "efi" ]; then
		espstart=`expr $et_lba \* 2048`
		espsize=`expr $et_sectors \* 512`
		espparam="-p efi::$espsize:$espstart"
		break
	fi
done

# Create a GPT image containing the partitions we need for hybrid boot.
imgsize=`stat -f %z $NAME`
$MKIMG -s gpt \
	--capacity $imgsize \
	-b $OBJDIR/boot/pmbr \
	$espparam \
	-p freebsd-boot:=$OBJDIR/boot/isoboot \
	-o hybrid.img

# Drop the PMBR, GPT, and boot code into the System Area of the ISO.
dd if=hybrid.img of=$NAME bs=32k count=1 conv=notrunc
rm -f hybrid.img