From d2cfda90cb27c7aac9d0956e71344142d2560228 Mon Sep 17 00:00:00 2001
From: Andres Salomon <dilinger@debian.org>
Date: Tue, 19 Aug 2008 15:38:13 -0400
Subject: [PATCH] separate out jffs2 image creation script Signed-off-by:
 Andres Salomon <dilinger@debian.org>

---
 functions.sh | 83 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 mkjffs2.sh   | 49 +++++++++++++++++++++++++++++++
 2 files changed, 132 insertions(+)
 create mode 100644 functions.sh
 create mode 100755 mkjffs2.sh

diff --git a/functions.sh b/functions.sh
new file mode 100644
index 0000000..00a23a4
--- /dev/null
+++ b/functions.sh
@@ -0,0 +1,83 @@
+#!/bin/sh -e
+#
+# Copyright © 2008  Andres Salomon <dilinger@queued.net>
+#
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+check_for_cmds()
+{
+	for cmd in $@; do
+		which $cmd >/dev/null || {
+			echo "Missing required command '$cmd'!" 1>&2
+			return 1
+		}
+	done
+
+	return 0
+}
+
+# @mntpt - path to mounted root directory
+# @fstype - the root filesystem type (in a form that 'mount' understands)
+create_fstab()
+{
+	mntpt="$1"
+	fstype="$2"
+
+	if [ "${fstype}" = "jffs2" ]; then
+		r=mtd0
+	else
+		r="LABEL=OLPCRoot"
+	fi
+
+	cat >${mntpt}/etc/fstab<<EOF
+${r} / ${fstype} defaults,noatime 1 1
+devpts /dev/pts devpts gid=5,mode=620 0 0
+tmpfs /dev/shm tmpfs defaults,size=15% 0 0
+proc /proc proc defaults 0 0
+sysfs /sys sysfs defaults 0 0
+tmpfs /var/cache/apt/cache tmpfs defaults 0 0
+none /ofw promfs defaults 0 0
+EOF
+}
+
+# @mntpt - path to mounted root directory
+# @fstype - the root filesystem type (in a form that 'mount' understands)
+create_ofwboot()
+{
+	mntpt="$1"
+	fstype="$2"
+
+	if [ "${fstype}" = "jffs2" ]; then
+		r=mtd0
+		rfs="rootfstype=jffs2"
+	else
+		r=/dev/sda1
+		rfs=""
+	fi
+
+	cat >${mntpt}/boot/olpc.fth<<EOF
+\\ OLPC boot script
+
+" ro root=${r} ${rfs} fbcon=font:SUN12x22" to boot-file
+game-key-mask h# 80 and if
+	\\ boot from backup kernel
+	" nand:\\vmlinuz.old" to boot-device
+else
+	\\ boot from regular kernel
+	" nand:\\vmlinuz" to boot-device
+then
+boot
+EOF
+}
diff --git a/mkjffs2.sh b/mkjffs2.sh
new file mode 100755
index 0000000..5793681
--- /dev/null
+++ b/mkjffs2.sh
@@ -0,0 +1,49 @@
+#!/bin/sh -e
+#
+# Copyright © 2008  Andres Salomon <dilinger@queued.net>
+#
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+. functions.sh
+
+usage()
+{
+	echo "" 1>&2
+	echo "Usage: $0 <root directory> <img>" 1>&2
+	echo "" 1>&2
+	exit 1
+}
+
+if [ "$#" != "2" ]; then
+	usage
+fi
+
+ROOT_DIR=$1
+IMG_NAME=$2
+
+if [ ! -d "${ROOT_DIR}" ]; then
+	echo "" 1>&2
+	echo "*** Unable to find root directory!" 1>&2
+	usage
+fi
+
+check_for_cmds mkfs.jffs2 sumtool
+create_fstab ${ROOT_DIR} jffs2
+create_ofwboot ${ROOT_DIR} jffs2
+
+mkfs.jffs2 -n -e128KiB -r ${ROOT_DIR} -o ${IMG_NAME}.pre
+sumtool -n -p -e 128KiB -i ${IMG_NAME}.pre -o ${IMG_NAME}
+rm -f ${IMG_NAME}.pre
+./crcimg.pl < ${IMG_NAME} > ${IMG_NAME}.crc
-- 
2.39.2