1#!/bin/sh
2#
3# Module: mkisoimages.sh
4# Author: Jordan K Hubbard
5# Date:   22 June 2001
6#
7# $FreeBSD: stable/11/release/amd64/mkisoimages.sh 333006 2018-04-25 18:53:02Z benno $
8#
9# This script is used by release/Makefile to build the (optional) ISO images
10# for a FreeBSD release.  It is considered architecture dependent since each
11# platform has a slightly unique way of making bootable CDs.  This script
12# is also allowed to generate any number of images since that is more of
13# publishing decision than anything else.
14#
15# Usage:
16#
17# mkisoimages.sh [-b] image-label image-name base-bits-dir [extra-bits-dir]
18#
19# Where -b is passed if the ISO image should be made "bootable" by
20# whatever standards this architecture supports (may be unsupported),
21# image-label is the ISO image label, image-name is the filename of the
22# resulting ISO image, base-bits-dir contains the image contents and
23# extra-bits-dir, if provided, contains additional files to be merged
24# into base-bits-dir as part of making the image.
25
26if [ -z $ETDUMP ]; then
27	ETDUMP=etdump
28fi
29
30if [ -z $MAKEFS ]; then
31	MAKEFS=makefs
32fi
33
34if [ -z $MKIMG ]; then
35	MKIMG=mkimg
36fi
37
38if [ "x$1" = "x-b" ]; then
39	# This is highly x86-centric and will be used directly below.
40	bootable="-o bootimage=i386;$4/boot/cdboot -o no-emul-boot"
41
42	# Make EFI system partition (should be done with makefs in the future)
43	dd if=/dev/zero of=efiboot.img bs=4k count=200
44	device=`mdconfig -a -t vnode -f efiboot.img`
45	newfs_msdos -F 12 -m 0xf8 /dev/$device
46	mkdir efi
47	mount -t msdosfs /dev/$device efi
48	mkdir -p efi/efi/boot
49	cp "$4/boot/loader.efi" efi/efi/boot/bootx64.efi
50	umount efi
51	rmdir efi
52	mdconfig -d -u $device
53	bootable="$bootable -o bootimage=i386;efiboot.img -o no-emul-boot -o platformid=efi"
54	
55	shift
56else
57	bootable=""
58fi
59
60if [ $# -lt 3 ]; then
61	echo "Usage: $0 [-b] image-label image-name base-bits-dir [extra-bits-dir]"
62	exit 1
63fi
64
65LABEL=`echo "$1" | tr '[:lower:]' '[:upper:]'`; shift
66NAME="$1"; shift
67
68publisher="The FreeBSD Project.  http://www.FreeBSD.org/"
69echo "/dev/iso9660/$LABEL / cd9660 ro 0 0" > "$1/etc/fstab"
70$MAKEFS -t cd9660 $bootable -o rockridge -o label="$LABEL" -o publisher="$publisher" "$NAME" "$@"
71rm -f "$1/etc/fstab"
72rm -f efiboot.img
73
74if [ "$bootable" != "" ]; then
75	# Look for the EFI System Partition image we dropped in the ISO image.
76	for entry in `$ETDUMP --format shell $NAME`; do
77		eval $entry
78		if [ "$et_platform" = "efi" ]; then
79			espstart=`expr $et_lba \* 2048`
80			espsize=`expr $et_sectors \* 512`
81			espparam="-p efi::$espsize:$espstart"
82			break
83		fi
84	done
85
86	# Create a GPT image containing the partitions we need for hybrid boot.
87	imgsize=`stat -f %z $NAME`
88	$MKIMG -s gpt \
89	    --capacity $imgsize \
90	    -b $4/boot/pmbr \
91	    $espparam \
92	    -p freebsd-boot:=$4/boot/isoboot \
93	    -o hybrid.img
94
95	# Drop the PMBR, GPT, and boot code into the System Area of the ISO.
96	dd if=hybrid.img of=$NAME bs=32k count=1 conv=notrunc
97	rm -f hybrid.img
98fi
99