separate out jffs2 image creation script

Signed-off-by: Andres Salomon <dilinger@debian.org>

diff --git a/functions.sh b/functions.sh
new file mode 100644 (file)
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 (executable)
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