Change the way powerpc bootable CDs are generated to work around a bug

in hybrid image generation in cdrtools. This produces a small HFS partition
containing loader, mapped in by an oddly-formed APM table using a new
feature in makefs. This does not appear to work yet on early-model G3
systems, which will be fixed later, but produces bootable CDs on
everything else.

release/powerpc/generate-hfs.sh

@@ -0,0 +1,64 @@
+#!/bin/sh
+
+# This script generates the dummy HFS filesystem used for the PowerPC boot
+# blocks. It uses hfsutils (emulators/hfsutils) to generate a template
+# filesystem with the relevant interesting files. These are then found by
+# grep, and the offsets written to a Makefile snippet.
+#
+# Because of licensing concerns, and because it is overkill, we do not
+# distribute hfsutils as a build tool. If you need to regenerate the HFS
+# template (e.g. because the boot block or the CHRP script have grown),
+# you must install it from ports.
+
+# $FreeBSD$
+
+HFS_SIZE=400		#Size in 2048-byte blocks of the produced image
+LOADER_SIZE=300k
+
+# Generate 800K HFS image
+OUTPUT_FILE=hfs-boot
+
+dd if=/dev/zero of=$OUTPUT_FILE bs=2048 count=$HFS_SIZE
+hformat -l "FreeBSD Install" $OUTPUT_FILE
+hmount $OUTPUT_FILE
+
+# Create and bless a directory for the boot loader
+hmkdir ppc
+hattrib -b ppc
+hcd ppc
+
+# Make the CHRP boot script, which gets loader from the ISO9660 partition
+cat > bootinfo.txt << EOF
+<CHRP-BOOT>
+<DESCRIPTION>FreeBSD/powerpc bootloader</DESCRIPTION>
+<OS-NAME>FreeBSD</OS-NAME>
+<VERSION> $FreeBSD: head/sys/boot/powerpc/boot1.chrp/bootinfo.txt 184490 2008-10
+-31 00:52:31Z nwhitehorn $ </VERSION>
+
+<COMPATIBLE>
+MacRISC MacRISC3 MacRISC4
+</COMPATIBLE>
+<BOOT-SCRIPT>
+" screen" output
+boot &device;:,\ppc\loader &device;:0
+</BOOT-SCRIPT>
+</CHRP-BOOT>
+EOF
+echo 'Loader START' | dd of=loader.tmp cbs=$LOADER_SIZE count=1 conv=block
+
+hcopy bootinfo.txt :bootinfo.txt
+hcopy loader.tmp :loader
+hattrib -c chrp -t tbxi bootinfo.txt
+humount
+
+rm bootinfo.txt
+rm loader.tmp
+
+bzip2 $OUTPUT_FILE
+echo 'HFS boot filesystem created by generate-hfs.sh' > $OUTPUT_FILE.bz2.uu
+echo 'DO NOT EDIT' >> $OUTPUT_FILE.bz2.uu
+echo '$FreeBSD$' >> $OUTPUT_FILE.bz2.uu
+
+uuencode $OUTPUT_FILE.bz2 $OUTPUT_FILE.bz2 >> $OUTPUT_FILE.bz2.uu
+rm $OUTPUT_FILE.bz2
+

release/powerpc/hfs-boot.bz2.uu

@@ -0,0 +1,23 @@
+HFS boot filesystem created by generate-hfs.sh
+DO NOT EDIT
+$FreeBSD$
+begin 644 hfs-boot.bz2
+M0EIH.3%!62936=#$Y.(``"___?_O_G)7!_Y]OW??5#]U_^!`0`,@1`!!``!@
+M(0!`3,`"L"4.2U"2(H9%/:*>TFDVU3RGZID'J&C3U,@T-&@`/1!H>IZC1D#(
+M`D24TTRFC1D]*;$@!IZ@Q!IH-````#0&33":?J@<:&AH:`:`Q`T!D``&F@`:
+M`9````PDI1J>0Q,H/1J&@```!D-`````T-``#SZHHR(+Y*Y9J*Z:4KK=T]W@
+M4RV\LG/;0XDPC7^`9DO3/3&*].462T,NO#AA9C,O\0!)^Q@@S6";2`!);<W\
+MM\)T,GR:I$-V("3$9$B"&8,,*RS@L++(8KPP)-C!L0(22AH:=29JC18OSD@O
+M&&`F8@M#$H:5#;%`Q)(22DF(/IB46IH0H?):$7!BU_SU=DL`+E*J,;0?%AW6
+M#\-_#^NL++6(CI"!)*#8N/S2"7!C_QAB8[(ZW3G$\`G81HL8.H^M8?#(Z"JL
+M;J^PI=+>?8(B6BR1(-7Q*8?>>HPQSBQE>M$A9K6FFW<:#6[D931J%U.F8*`0
+MD(,M80A(0;]K'X'SI]G(C)Y).AK_/0)D(2$$]JB$]]F').M4RF8O%[IHK[0O
+MMQ?'>O[U8EM;>U<P%^7)&#;>",KY^*%FO9C05_435?.4*F[6AIL%&9C<9W&&
+M[ZMP(TG!'*4Z>@6TM)0BS.D._O,WR9OJ728V48I;DD=8QGBE7J-&L^?=0JEF
+MV2`B/)/D\)83IS@32(;!P,152U()0VGQH>2F$UC:M!D5`F#1W$\:KKDR[TQB
+MN;N<J=4-1'[HLG,!L^IJG53+[IORM_L7JB/:/<+:634`XD.R'",=M$A;C4E.
+M$RRHL2;B)D:_ZJVK$Z*40?H'TATSF5$$%L@<LB4`\2$P90.50PWE:'REG6\D
+ML%>5B1;P!7:AG#1BP2%-Q$7I6QE,Y?NHIK_LR+HA]22HW0.8(^G4/X`Z@!Z6
+8#PQ(0))/`A(0.'VUG_\7<D4X4)#0Q.3B
+`
+end

release/powerpc/hfs.map

@@ -1,3 +0,0 @@
-# $FreeBSD$
-.tbxi   -     'chrp'  'tbxi'  "bootstrap"
-*       -     'fbsd'  'TEXT'  "FreeBSD file"

release/powerpc/mkisoimages.sh

@@ -23,9 +23,16 @@
 # extra-bits-dir, if provided, contains additional files to be merged
 # into base-bits-dir as part of making the image.
 
+publisher="The FreeBSD Project.  http://www.freebsd.org/"
 if [ "x$1" = "x-b" ]; then
-	cp /usr/src/release/powerpc/boot.tbxi ${4}/boot
-	bootable="-hfs -hfs-bless ${4}/boot -map /usr/src/release/powerpc/hfs.map -hide-hfs ${4}/usr/share/man"
+	uudecode -o /tmp/hfs-boot-block.bz2 `dirname $0`/hfs-boot.bz2.uu
+	bzip2 -d /tmp/hfs-boot-block.bz2
+	OFFSET=$(hd /tmp/hfs-boot-block | grep 'Loader START' | cut -f 1 -d ' ')
+	OFFSET=0x$(echo 0x$OFFSET | awk '{printf("%x\n",$1/512);}')
+	echo dd if=$4/boot/loader of=/tmp/hfs-boot-block seek=$OFFSET conv=notrunc
+	dd if=$4/boot/loader of=/tmp/hfs-boot-block seek=$OFFSET conv=notrunc
+
+	bootable="-o bootimage=macppc;/tmp/hfs-boot-block -o no-emul-boot"
 	shift
 else
 	bootable=""
@@ -33,28 +40,13 @@ fi
 
 if [ $# -lt 3 ]; then
 	echo Usage: $0 '[-b] image-label image-name base-bits-dir [extra-bits-dir]'
-	rm -f ${IMG}
 	exit 1
 fi
 
-type mkisofs 2>&1 | grep " is " >/dev/null
-if [ $? -ne 0 ]; then
-	echo The cdrtools port is not installed.  Trying to get it now.
-	if [ -f /usr/ports/sysutils/cdrtools/Makefile ]; then
-		cd /usr/ports/sysutils/cdrtools && make install BATCH=yes && make clean
-	else
-		if ! pkg_add -r cdrtools; then
-			echo "Could not get it via pkg_add - please go install this"
-			echo "from the ports collection and run this script again."
-			exit 2
-		fi
-	fi
-fi
-
 LABEL=$1; shift
 NAME=$1; shift
 
-echo "/dev/iso9660/$LABEL / cd9660 ro 0 0" > $1/etc/fstab
-mkisofs $bootable -l -r -part -no-desktop -V $LABEL -o $NAME $*
+echo "/dev/iso9660/`echo $LABEL | tr '[:lower:]' '[:upper:]'` / cd9660 ro 0 0" > $1/etc/fstab
+makefs -t cd9660 $bootable -o rockridge -o label=$LABEL $NAME $*
 rm $1/etc/fstab
-
+rm /tmp/hfs-boot-block