buildrom-devel/buildrom/skeleton/linuxrc

   1 #!/bin/sh
   2
   3 CMDLINE="root=/dev/sda1 console=ttyS0,115200 console=tty0 rootdelay=10 rw"
   4 KERNEL="/bzImage"
   5 INITRD=""
   6
   7 # Any of the above can be surplanted by /boot.conf
   8
   9 if [ -f /boot.conf ]; then
  10         . /boot.conf
  11 fi
  12
  13 # This will load a bzImage from the USB key
  14
  15 load_usb() {
  16         mkdir /key
  17
  18         mount /dev/sda1 /key || {
  19                 echo "ERROR: Couldn't mount the USB key."
  20                 return
  21         }
  22
  23         if [ ! -f /key$KERNEL ]; then
  24                 echo "ERROR: /key$KERNEL doesn't exist."
  25                 return
  26         fi
  27
  28         /sbin/kbl-kexec /key$KERNEL "$CMDLINE" $INITRD
  29         echo "ERROR: can't run kbl-kexec /key$KERNEL $CMDLINE $INITRD"
  30 }
  31
  32 mkdir /proc
  33 mount -t proc proc /proc
  34
  35 # Makedevs returns seemingly nasty error messages, even though the
  36 # files are still created (we're missing something in the minimal kernel
  37 # that causes chown to return ENOSYS).
  38 # End result - we ignore the error messages
  39
  40 /sbin/makedevs /dev < device.txt > /dev/null 2>&1
  41
  42 # FIXME - bad!
  43
  44 cd /bin
  45 ./bootmenu
  46 RET=$?
  47 cd /
  48 clear
  49
  50 # Handle the return values.  Modes 0 - 2 shouldn't return
  51 # If they are successful.  If they aren't successful, then
  52 # we drop into a shell at the end.  Mode 3 puts us into the
  53 # shell regardless.
  54
  55 if [ $RET -eq 0 ]; then
  56         echo "ERROR: Wired mode isn't supported right now."
  57 elif [ $RET -eq 1 ]; then
  58         echo "ERROR: Wireless mode isn't supported right now."
  59 elif [ $RET -eq 2 ]; then
  60         load_usb
  61 elif [ $RET -eq -1 ]; then
  62         echo "ERROR: The bootmenu was not successful."
  63 fi
  64
  65 echo "NOTICE: Starting the shell..."
  66 exec /bin/ash