filesystem: added support to upgrade BeagleBone Black bootloader.

rules/filesystem/fs/etc/rc.d/upgrade

@@ -6,8 +6,6 @@
 #############################################################################
 # Author: Ricardo Martins                                                   #
 #############################################################################
-# $Id:: upgrade 1244 2012-10-08 07:21:07Z rasm                            $:#
-#############################################################################
 
 base='/opt/lsts/glued'
 hostname="$(hostname)"
@@ -111,6 +109,51 @@ kernel_upgrade()
     fi
 }
 
+bbb_boot_upgrade()
+{
+    # Check if board is a BeagleBone black.
+    dmesg | grep -i 'machine model' | grep -i beaglebone
+    if [ $? -ne 0 ]; then
+        return 0
+    fi
+
+    dev='/dev/mmcblk1p1'
+
+    echo -en '* BeagleBone Black: checking eMMC device... '
+    if ! [ -b "$dev" ]; then
+        echo 'not present'
+        return 0
+    fi
+    echo 'present'
+
+    echo -en "* BeagleBone Black: mounting bootloader partition... "
+    mount -t vfat "$dev" /mnt > /dev/null 2>&1
+    if [ $? -ne 0 ]; then
+        echo "failed"
+        return 0
+    fi
+    echo 'done'
+
+    for f in MLO u-boot.img; do
+        if [ -f /mnt/MLO ]; then
+            echo -en "* BeagleBone Black: Replacing $f... "
+            cp "$base/.glued-new/boot/$f" /mnt
+            echo 'done'
+        fi
+    done
+
+    echo -en "* BeagleBone Black: unmounting bootloader partition... "
+    umount /mnt > /dev/null 2>&1
+    if [ $? -ne 0 ]; then
+        echo 'failed'
+        return  1
+    fi
+
+    sync && sync && sync && sync
+    echo 'done'
+    return 0
+}
+
 old_move()
 {
     echo "* Mounting rootfs read-write..."
@@ -158,6 +201,7 @@ start()
     version || return 1
     kernel_dst || return 1
     new_unpack || return 1
+    bbb_boot_upgrade || return 1
     kernel_upgrade || return 1
     old_move || return 1
 }