initrd/init

   1 #!/bin/busybox sh
   2 #
   3 # By Chih-Wei Huang <cwhuang@linux.org.tw>
   4 # Last updated 2009/07/18
   5 #
   6 # License: GNU Public License
   7 # We explicitely grant the right to use the scripts
   8 # with Android-x86 project.
   9 #
  10
  11 if [ -n "$DEBUG" ]; then
  12         LOG=/tmp/log
  13         set -x
  14 else
  15         LOG=/dev/null
  16         [ -e $LOG ] || busybox mknod $LOG c 1 3
  17 fi
  18 exec 2> $LOG
  19
  20 busybox mount -t proc proc /proc
  21 busybox mount -t sysfs sys /sys
  22
  23 busybox --install -s
  24
  25 export PATH=$PATH:/system/bin
  26
  27 if [ -n "$DEBUG" ]; then
  28         mknod /dev/tty2 c 4 2 && openvt
  29         mknod /dev/tty3 c 4 3 && openvt
  30 fi
  31
  32 echo -n Detecting Android...
  33
  34 while [ 1 ]; do
  35         mdev -s
  36
  37         for device in /dev/sr* /dev/sd[a-z]*; do
  38                 mount $device /mnt || continue
  39                 cd /mnt/$SRC
  40                 if [ ! -e ramdisk.img -o ! -e system.img ]; then
  41                         umount /mnt
  42                         continue
  43                 fi
  44                 mount -t tmpfs tmpfs /android
  45                 cd /android
  46                 zcat /mnt/$SRC/ramdisk.img | cpio -id > /dev/null
  47                 mount -o loop,rw /mnt/$SRC/system.img /sfs
  48                 if [ -e /sfs/etc/mountd.conf ]; then
  49                         if [ -n "$SDCARD" ]; then
  50                                 if [ -b $SDCARD ]; then
  51                                         sed -i "s|\(^ *block_device *\)\(/dev/.*\)|\1$SDCARD|g" /sfs/etc/mountd.conf
  52                                         sed -i 's/^EXTERNAL_STORAGE_STATE=.*$/EXTERNAL_STORAGE_STATE=mounted/g' /sfs/build.prop
  53                                 elif [ -b /dev/$SDCARD ]; then
  54                                         SDCARD=`echo $SDCARD | sed -e 's|^/\(.*\)|\1|g'`
  55                                         sed -i "s|\(^ *block_device *\)\(/dev/.*\)|\1/dev/$SDCARD|g" /sfs/etc/mountd.conf
  56                                         sed -i 's/^EXTERNAL_STORAGE_STATE=.*$/EXTERNAL_STORAGE_STATE=mounted/g' /sfs/build.prop
  57                                 else
  58                                         SDCARD=`echo $SDCARD | sed -e 's|^/\(.*\)|\1|g'`
  59                                         # reset the mount status, mountd will set it when the external storage is added
  60                                         sed -i 's/^EXTERNAL_STORAGE_STATE=.*$/EXTERNAL_STORAGE_STATE=unmounted/g' /sfs/build.prop
  61                                         _sdcard=1
  62                                         sed -i "s|\(^ *block_device *\)\(/dev/.*\)|\1/dev/$SDCARD|g" /sfs/etc/mountd.conf
  63                                 fi
  64                         else
  65                                 # clean up the mountd.conf to always mount from tmpfs
  66                                 sed -i "s|\(^ *block_device *\)\(/dev/.*\)|\1/dev/SDCARD|g" /sfs/etc/mountd.conf
  67                                 sed -i 's/^EXTERNAL_STORAGE_STATE=.*$/EXTERNAL_STORAGE_STATE=mounted/g' /sfs/build.prop
  68                         fi
  69                 elif [ -e /sfs/build.prop ]; then
  70                         sed -i 's/^EXTERNAL_STORAGE_STATE=.*$/EXTERNAL_STORAGE_STATE=mounted/g' /sfs/build.prop
  71                 fi
  72                 umount /sfs
  73                 mount -o loop,ro /mnt/$SRC/system.img /sfs
  74                 if [ -e /sfs/system.img ]; then
  75                         mount -o loop,rw /sfs/system.img system
  76                         if [ -e system/etc/mountd.conf ]; then
  77                                 if [ -n "$SDCARD" ] ; then
  78                                         if [ -b $SDCARD ]; then
  79                                                 sed -i "s|\(^ *block_device *\)\(/dev/.*\)|\1$SDCARD|g" /system/etc/mountd.conf
  80                                                 sed -i 's/^EXTERNAL_STORAGE_STATE=.*$/EXTERNAL_STORAGE_STATE=mounted/g' /system/build.prop
  81                                         elif [ -b /dev/$SDCARD ]; then
  82                                                 SDCARD=`echo $SDCARD | sed -e 's|^/\(.*\)|\1|g'`
  83                                                 sed -i "s|\(^ *block_device *\)\(/dev/.*\)|\1/dev/$SDCARD|g" /sfs/etc/mountd.conf
  84                                                 sed -i 's/^EXTERNAL_STORAGE_STATE=.*$/EXTERNAL_STORAGE_STATE=mounted/g' /system/build.prop
  85                                         else
  86                                                 SDCARD=`echo $SDCARD | sed -e 's|^/\(.*\)|\1|g'`
  87                                                 # reset the mount status, mountd will set it when the external storage is added
  88                                                 sed -i 's/^EXTERNAL_STORAGE_STATE=.*$/EXTERNAL_STORAGE_STATE=unmounted/g' /system/build.prop
  89                                                 _sdcard=1
  90                                                 sed -i "s|\(^ *block_device *\)\(/dev/.*\)|\1/dev/$SDCARD|g" /system/etc/mountd.conf
  91                                         fi
  92                                 else
  93                                         # clean up the mountd.conf to always mount from tmpfs
  94                                         sed -i "s|\(^ *block_device *\)\(/dev/.*\)|\1/dev/SDCARD|g" /system/etc/mountd.conf
  95                                         sed -i 's/^EXTERNAL_STORAGE_STATE=.*$/EXTERNAL_STORAGE_STATE=mounted/g' /system/build.prop
  96                                 fi
  97                         elif [ -e system/build.prop ]; then
  98                                 sed -i 's/^EXTERNAL_STORAGE_STATE=.*$/EXTERNAL_STORAGE_STATE=mounted/g' /system/build.prop
  99                         fi
 100                         umount system
 101                         mount -o loop,ro /sfs/system.img system
 102                 else
 103                         mount --move /sfs system
 104                 fi
 105                 mkdir cache sdcard
 106                 mount -t tmpfs tmpfs cache
 107                 echo " found at $device"
 108                 break
 109         done
 110         mountpoint -q /android && break
 111         sleep 1
 112         echo -n .
 113         if [ -n "$DEBUG" ]; then
 114                 echo -e "\nType 'exit' to continue booting...\n"
 115                 sh
 116         fi
 117 done
 118
 119 ln -s android/system /
 120
 121 ln -s ../system/lib/modules /lib
 122
 123 if [ -b "$DATA" ]; then
 124         mount $DATA data
 125 elif [ -b "/dev/$DATA" ]; then
 126         mount /dev/$DATA data
 127 elif [ -d /mnt/$SRC/data ]; then
 128         mount --bind /mnt/$SRC/data data
 129 else
 130         mount -t tmpfs tmpfs data
 131 fi
 132 if [ -z "$_sdcard"  ]; then
 133         if [ -b "$SDCARD" ]; then
 134                 mount $SDCARD sdcard
 135         elif [ -b "/dev/$SDCARD" ]; then
 136                 mount /dev/$SDCARD sdcard
 137         else
 138                 if [ -d /mnt/$SRC/sdcard ]; then
 139                         mount --bind /mnt/$SRC/sdcard sdcard
 140                 else
 141                         mount -t tmpfs tmpfs sdcard
 142                 fi
 143         fi
 144 fi
 145
 146 # load scripts
 147 for s in `ls /scripts/* /mnt/$SRC/scripts/*`; do
 148         source $s
 149 done
 150
 151 load_modules
 152
 153 [ -n "$INSTALL" ] && install_hd
 154
 155 if [ -n "$DEBUG" ]; then
 156         echo -e "\nUse Alt-F1/F2/F3 to switch between virtual consoles"
 157         echo -e "Type 'exit' to enter Android...\n"
 158
 159         # FIXME: all error messages in the shell are sent to $LOG
 160         sh
 161         chroot /android /init
 162 else
 163         exec switch_root /android /init
 164 fi
 165
 166 sh # aviod kernel panic