From cd5e509fb9514c902e954392574f91ce56a4e1d0 Mon Sep 17 00:00:00 2001
From: Jesse Gilles <jgilles@multitech.com>
Date: Fri, 30 Apr 2010 10:48:31 -0500
Subject: initscripts: add CoreCDP flash on reboot support

---
 .../initscripts/initscripts-1.0/corecdp/umountfs   | 120 +++++++++++++++++++++
 1 file changed, 120 insertions(+)
 create mode 100644 recipes/initscripts/initscripts-1.0/corecdp/umountfs

diff --git a/recipes/initscripts/initscripts-1.0/corecdp/umountfs b/recipes/initscripts/initscripts-1.0/corecdp/umountfs
new file mode 100644
index 0000000000..ab3d709f70
--- /dev/null
+++ b/recipes/initscripts/initscripts-1.0/corecdp/umountfs
@@ -0,0 +1,120 @@
+#! /bin/sh
+#
+# umountfs	Turn off swap and unmount all local filesystems.
+#
+
+PATH=/sbin:/bin:/usr/sbin:/usr/bin
+
+umount_all() {
+  echo "Deactivating swap..."
+  swapoff -a
+
+  # We leave /proc mounted.
+  echo "Unmounting local filesystems..."
+  mount -o remount,ro /mnt/ram
+  umount -f -a -r
+
+  mount -o remount,ro /
+}
+
+flash_upgrade() {
+  if [ $# -ne 1 ]; then
+    echo "need to specify flash-root"
+    return
+  fi
+  # flash_root must be a mountpoint that is not the rootfs and be mounted rw
+  local flash_root=${1}
+
+  local flash_dir=${flash_root}/flash-upgrade
+  local uImage_file=${flash_dir}/uImage.bin
+  local rootfs_file=${flash_dir}/rootfs.jffs2
+
+  local reboot_cmd=/usr/sbin/upgrade-reboot
+  local nandwrite_cmd=/usr/bin/nandwrite.static
+  local mode=
+  local uImage_mtd=
+  local rootfs_mtd=
+
+  if [ ! -d "${flash_dir}" ]; then
+    echo "${flash_dir} not present, skipping"
+    return
+  fi
+
+  if ! mountpoint -q "${flash_root}"; then
+    echo "${flash_root} is not a mountpoint"
+    return
+  fi
+
+  mode=$(grep "${flash_root}" /proc/mounts | cut -d ' ' -f 4 | cut -d ',' -f 1)
+  if [ "${mode}" != "rw" ]; then
+    echo "${flash_root} is not mounted rw"
+    return
+  fi
+
+  if [ ! -x "${reboot_cmd}" ]; then
+    echo "${reboot_cmd} is not installed"
+    return
+  fi
+
+  if [ ! -x "${nandwrite_cmd}" ]; then
+    echo "${nandwrite_cmd} is not installed"
+    return
+  fi
+
+  uImage_mtd="/dev/$(cat /proc/mtd | grep uImage | cut -d : -f 1)"
+  if [ ! -c "${uImage_mtd}" ]; then
+    echo "No valid MTD partition is labeled uImage"
+    return
+  fi
+
+  rootfs_mtd="/dev/$(cat /proc/mtd | grep Rootfs | cut -d : -f 1)"
+  if [ ! -c "${rootfs_mtd}" ]; then
+    echo "No valid MTD partition is labeled Rootfs"
+    return
+  fi
+
+  if [ -f ${uImage_file} ]; then
+    echo "Flashing ${uImage_mtd} (uImage) with ${uImage_file}..."
+
+    flash_eraseall ${uImage_mtd}
+    nandwrite -p ${uImage_mtd} ${uImage_file}
+
+    echo "Remember to clean-up ${uImage_file} after reboot"
+  fi
+
+  if [ -f ${rootfs_file} ]; then
+    echo "Flashing ${rootfs_mtd} (rootfs) with ${rootfs_file}..."
+
+    cp ${reboot_cmd} ${flash_dir}/upgrade-reboot
+    cp ${nandwrite_cmd} ${flash_dir}/nandwrite.static
+
+    sync
+    sleep 2
+    mount -o remount,ro ${flash_root}
+
+    # flash_root is not going to be umounted
+    sed -i -e "\\|${flash_root}| d" /etc/mtab
+
+    umount_all
+
+    flash_eraseall -j ${rootfs_mtd}
+    ${flash_dir}/nandwrite.static ${rootfs_mtd} ${rootfs_file}
+
+    echo "Remember to clean-up ${flash_dir} after reboot"
+    echo ""
+    echo "Rebooting..."
+
+    ${flash_dir}/upgrade-reboot
+
+    # Should not get here normally
+    echo "upgrade-reboot failed"
+    exit 1
+  fi
+}
+
+flash_upgrade /var/volatile
+flash_upgrade /media/card
+
+umount_all
+
+: exit 0
-- 
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