ARC ramdisk cruncher.

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+#	$OpenBSD: install.md,v 1.1 1997/05/14 20:52:45 pefo Exp $
+#
+#
+# Copyright rc) 1996 The NetBSD Foundation, Inc.
+# All rights reserved.
+#
+# This code is derived from software contributed to The NetBSD Foundation
+# by Jason R. Thorpe.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. All advertising materials mentioning features or use of this software
+#    must display the following acknowledgement:
+#        This product includes software developed by the NetBSD
+#        Foundation, Inc. and its contributors.
+# 4. Neither the name of The NetBSD Foundation nor the names of its
+#    contributors may be used to endorse or promote products derived
+#    from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+
+#
+# machine dependent section of installation/upgrade script.
+#
+
+# Machine-dependent install sets
+MDSETS="kernel"
+
+md_set_term() {
+	if [ ! -z "$TERM" ]; then
+		return
+	fi
+	echo -n "Specify terminal type [pc3]: "
+	getresp "pc3"
+	TERM="$resp"
+	export TERM
+}
+
+md_makerootwritable() {
+}
+
+md_get_diskdevs() {
+	# return available disk devices
+	cat /kern/msgbuf | egrep "^[sw]d[0-9] " | cut -d" " -f1 | sort -u
+}
+
+md_get_cddevs() {
+	# return available CDROM devices
+	cat /kern/msgbuf | egrep "^a?cd[0-9] " | cut -d" " -f1 | sort -u
+}
+
+md_get_ifdevs() {
+	# return available network devices
+	cat /kern/msgbuf | egrep "^(e[dglp][0-9] |[dil]e[0-9] |f[ep]a[0-9] )" | cut -d" " -f1 | sort -u
+}
+
+md_get_partition_range() {
+    # return range of valid partition letters
+    echo "[a-p]"
+}
+
+md_installboot() {
+	echo "Installing boot block..."
+	disklabel -B $1
+}
+
+md_native_fstype() {
+    echo "msdos"
+}
+
+md_native_fsopts() {
+    echo "ro"
+}
+
+md_checkfordisklabel() {
+	# $1 is the disk to check
+	local rval
+
+	disklabel -r $1 > /dev/null 2> /tmp/checkfordisklabel
+	if grep "no disk label" /tmp/checkfordisklabel; then
+		rval=1
+	elif grep "disk label corrupted" /tmp/checkfordisklabel; then
+		rval=2
+	else
+		rval=0
+	fi
+
+	rm -f /tmp/checkfordisklabel
+	return $rval
+}
+
+md_prep_fdisk()
+{
+	local _disk
+	local _done
+
+	_disk=$1
+	echo "This disk has not previously been used with OpenBSD.  Do you wish"
+	echo "to share this disk with other operating systems (such as Windows"
+	echo -n "95, MS-DOS, Linux etc.)? [y]"
+	getresp "y"
+	case "$resp" in
+	n*|N*)	return ;;
+	*) ;;
+	esac
+
+	echo "WARNING: Wrong information in the BIOS partition table might"
+	echo "render the disk unusable."
+
+	echo
+	echo "Current partition information is:"
+	fdisk ${_disk}
+	echo -n "Press [Enter] to continue "
+	getresp ""
+
+	_done=0
+	while [ $_done = 0 ]; do
+		echo
+		cat << \__md_prep_fdisk_1
+
+An OpenBSD partition should have type 166 (A6), and should be the only
+partition marked as active.  Furthermore, the partitions must NOT
+overlap each others.  fdisk will be started in update mode, and you
+will be able to add this information as needed.  If you make a mistake,
+exit fdisk without storing the new information, and you will be allowed
+to start over.
+__md_prep_fdisk_1
+		echo -n "Press [Enter] to continue "
+		getresp ""
+
+		fdisk -u ${_disk}
+
+		echo
+		echo "The new partition information is:"
+		fdisk ${_disk}
+
+		echo
+		echo "Is this information correct (if not, you will be permitted to "
+		echo -n "edit it again)? [n] "
+		getresp "n"
+
+		case "$resp" in
+		n*|N*) ;;
+		*) _done=1 ;;
+		esac
+	done
+
+	echo "Please take note of the offset and size of the OpenBSD partition"
+	echo "of the disk, as you will need that for the BSD disk label."
+	echo -n "Press [Enter] to continue "
+	getresp ""
+}
+
+md_prep_disklabel()
+{
+	local _disk
+
+	_disk=$1
+	md_checkfordisklabel $_disk
+	case $? in
+	0)
+		echo -n "Do you wish to edit the disklabel on $_disk? [y]"
+		;;
+	1)
+		md_prep_fdisk ${_disk}
+		echo "WARNING: Disk $_disk has no label"
+		echo -n "Do you want to create one with the disklabel editor? [y]"
+		;;
+	2)
+		echo "WARNING: Label on disk $_disk is corrupted"
+		echo -n "Do you want to try and repair the damage using the disklabel editor? [y]"
+		;;
+	esac
+
+	getresp "y"
+	case "$resp" in
+	y*|Y*) ;;
+	*)	return ;;
+	esac
+
+	# display example
+	cat << \__md_prep_disklabel_1
+
+Here is an example of what the partition information will look like once
+you have entered the disklabel editor. Disk partition sizes and offsets
+are in sector (most likely 512 bytes) units. Make sure these size/offset
+pairs are on cylinder boundaries (the number of sector per cylinder is
+given in the `sectors/cylinder' entry, which is not shown here).
+
+Also, if this disk is shared with other operating systems and have a BIOS
+partition table, make sure all file systems reserved for OpenBSD are within
+the offset and size specified in the BIOS partition table.
+
+Do not change any parameters except the partition layout and the label name.
+
+[Example]
+16 partitions:
+#        size   offset    fstype   [fsize bsize   cpg]
+  a:    50176        0    4.2BSD     1024  8192    16   # (Cyl.    0 - 111)
+  b:    64512    50176      swap                        # (Cyl.  112 - 255)
+  c:   640192        0   unknown                        # (Cyl.    0 - 1428)
+  d:   525504   114688    4.2BSD     1024  8192    16   # (Cyl.  256 - 1428)
+[End of example]
+
+__md_prep_disklabel_1
+	echo -n "Press [Enter] to continue "
+	getresp ""
+	disklabel -W ${_disk}
+	disklabel ${_disk} >/tmp/label.$$
+	disklabel -r -R ${_disk} /tmp/label.$$
+	rm -f /tmp/label.$$
+	disklabel -e ${_disk}
+}
+
+md_copy_kernel() {
+	#echo -n "Copying kernel..."
+	#cp -p /bsd /mnt/bsd
+	#echo "done."
+}
+
+md_welcome_banner() {
+{
+	if [ "$MODE" = "install" ]; then
+		echo ""
+		echo "Welcome to the OpenBSD/ARC ${VERSION} installation program."
+		cat << \__welcome_banner_1
+
+This program is designed to help you put OpenBSD on your disk,
+in a simple and rational way.  You'll be asked several questions,
+and it would probably be useful to have your disk's hardware
+manual, the installation notes, and a calculator handy.
+__welcome_banner_1
+
+	else
+		echo ""
+		echo "Welcome to the OpenBSD/ARC ${VERSION} upgrade program."
+		cat << \__welcome_banner_2
+
+This program is designed to help you upgrade your OpenBSD system in a
+simple and rational way.
+
+As a reminder, installing the `etc' binary set is NOT recommended.
+Once the rest of your system has been upgraded, you should manually
+merge any changes to files in the `etc' set into those files which
+already exist on your system.
+__welcome_banner_2
+	fi
+
+cat << \__welcome_banner_3
+
+As with anything which modifies your disk's contents, this
+program can cause SIGNIFICANT data loss, and you are advised
+to make sure your data is backed up before beginning the
+installation process.
+
+Default answers are displayed in brackets after the questions.
+You can hit Control-C at any time to quit, but if you do so at a
+prompt, you may have to hit return.  Also, quitting in the middle of
+installation may leave your system in an inconsistent state.
+
+__welcome_banner_3
+} | more
+}
+
+md_not_going_to_install() {
+	cat << \__not_going_to_install_1
+
+OK, then.  Enter `halt' at the prompt to halt the machine.  Once the
+machine has halted, power-cycle the system to load new boot code.
+
+__not_going_to_install_1
+}
+
+md_congrats() {
+	local what;
+	if [ "$MODE" = "install" ]; then
+		what="installed";
+	else
+		what="upgraded";
+	fi
+	cat << __congratulations_1
+
+CONGRATULATIONS!  You have successfully $what OpenBSD!
+To boot the installed system, enter halt at the command prompt. Once the
+system has halted, reset the machine and boot from the disk.
+
+__congratulations_1
+}