openwrt/package/base-files/default/etc/preinit

   1 #!/bin/sh
   2 export PATH=/bin:/sbin:/usr/bin:/usr/sbin
   3 mount none /proc -t proc
   4 insmod diag
   5 echo 0x01 > /proc/sys/diag
   6
   7 ifconfig eth0 up
   8 insmod switch-core
   9 insmod switch-robo || insmod switch-adm || rmmod switch-core
  10
  11 case "$(nvram get boardtype)" in
  12         0x0467) failsafe_vlan="0 1 2 3 5u*";;
  13         *) failsafe_vlan="1 2 3 4 5u*";;
  14 esac
  15 # save the boot loader's vlan config
  16 # we need it on some routers that have no vlan*ports set
  17 [ -d /proc/switch/eth0 ] && {
  18         v0p="$(cat /proc/switch/eth0/vlan/0/ports)"
  19         v1p="$(cat /proc/switch/eth0/vlan/1/ports)"
  20         v2p="$(cat /proc/switch/eth0/vlan/2/ports)"
  21         echo 1 > /proc/switch/eth0/reset
  22         echo "$failsafe_vlan" > /proc/switch/eth0/vlan/0/ports
  23 }
  24
  25 # this delay is apparently necessary because the link isn't up yet
  26 ifconfig eth0 192.168.1.1 netmask 255.255.255.0 broadcast 192.168.1.255 up
  27 netmsg 192.168.1.0 "(dummy message)" # b44 eats the first packet
  28 netmsg 192.168.1.255 "Press reset now, to enter Failsafe!"
  29
  30 sleep 2
  31
  32 if [ $(cat /proc/sys/reset) = 1 -o "$(nvram get failsafe)" = 1 ]; then
  33         export FAILSAFE=true
  34         [ "$(nvram get boot_wait)" != "on" ] && {
  35                 nvram set boot_wait=on
  36                 nvram commit
  37         }
  38         while :; do { echo $(((X=(X+1)%8)%2)) > /proc/sys/diag; sleep $((X==0)); } done &
  39         netmsg 192.168.1.255 "Entering Failsafe!"
  40 else
  41         netmsg 192.168.1.255 "Normal startup."
  42 fi
  43
  44 mount_root ${FAILSAFE:+failsafe}
  45
  46 # revert to the boot loader's vlan config
  47 # required for at least WRT54G v1.1
  48 [ -d /proc/switch/eth0 ] && {
  49         echo "$v0p" > /proc/switch/eth0/vlan/0/ports
  50         echo "$v1p" > /proc/switch/eth0/vlan/1/ports
  51         echo "$v2p" > /proc/switch/eth0/vlan/2/ports
  52 }
  53
  54 # remove the drivers for now
  55 rmmod switch-robo
  56 rmmod switch-adm
  57 rmmod switch-core
  58 ifconfig eth0 0.0.0.0
  59
  60 exec /sbin/init