#!/bin/sh
# Copyright (C) 2006 OpenWrt.org
. /etc/functions.sh
. /etc/diag.sh
usb_boot() {
set +x
# get the boot device
boot_dev=/dev/scsi/host0/bus0/target0/lun0/part2
# short-cut
if [ -z "$boot_dev" ]; then
return
fi
# disable hotplug
echo > /proc/sys/kernel/hotplug
# if your root is fat/vfat
insmod nls_base
insmod fat
insmod vfat
insmod ext2
insmod jbd
insmod ext3
# load modules for usb storage
insmod usbcore
insmod ohci-hcd
insmod uhci-hcd
insmod ehci-hcd
insmod scsi_mod
insmod sd_mod
insmod usb-storage
# wait for initialization to complete
echo "Waiting for 10 seconds for USB devices..."
sleep 10s
echo "Finished waiting."
# trying to mount new rootfs if it exists
mount -t ext3 -o rw,noatime $boot_dev /mnt || mount -t ext2 -o rw,noatime $boot_dev /mnt
# enable hotplug
echo /sbin/hotplug > /proc/sys/kernel/hotplug
if [ -d /mnt/mnt ]; then
echo "USB boot disk successfully mounted"
cd /mnt
pivot_root . mnt
mount none /proc -t proc
mount none /dev -t devfs
mkdir -p /dev/pts
mount none /dev/pts -t devpts
mount none /proc/bus/usb -t usbfs
mount none /sys -t sysfs
umount /mnt/proc
umount /mnt/dev
# size=$(awk '/Mem:/ {l=5242880;print((s=$2/2)<l)?$2-l:s}' /proc/meminfo)
# mount none /tmp -t tmpfs -o size=$size
exec chroot . sbin/init <dev/null >dev/null 2>&1
fi
# if something fails
cd /
# unmount everything
umount /mnt
}
failsafe() {
lock /tmp/.failsafe
echo "0 1 2 3 4 5u*" > /proc/switch/eth0/vlan/0/ports
set_state failsafe
[ -x "/usr/sbin/nvram" ] && {
[ "$(nvram get boot_wait)" != "on" ] && {
nvram set boot_wait=on
nvram commit
}
}
netmsg 192.168.1.255 "Entering Failsafe!"
telnetd -l /bin/login <> /dev/null 2>&1
ash --login
lock -u /tmp/.failsafe
}
export PATH=/bin:/sbin:/usr/bin:/usr/sbin
mount none /proc -t proc
usb_boot
size=$(awk '/Mem:/ {l=5242880;print((s=$2/2)<l)?$2-l:s}' /proc/meminfo)
mount none /tmp -t tmpfs -o size=$size
insmod diag
set_state preinit
trap 'FAILSAFE=true' USR1
echo '/sbin/hotplug.failsafe' > /proc/sys/kernel/hotplug
ifname=eth0
# hardware specific overrides
case "$(cat /proc/diag/model)" in
"Linksys WAP54G V1") ifname=eth1;;
"ASUS WL-HDD") ifname=eth1;;
"ASUS WL-300g") ifname=eth1;;
"ASUS (unknown, BCM4702)") ifname=eth1;;
esac
insmod switch-core
insmod switch-robo || insmod switch-adm || rmmod switch-core
ifconfig $ifname 192.168.1.1 netmask 255.255.255.0 broadcast 192.168.1.255 up
[ -d /proc/switch/eth0 ] && {
echo 1 > /proc/switch/eth0/reset
# this would be easier if we blasted the message across all ports
# but we don't want packets leaking across interfaces
for port in $(seq 0 4); do {
echo "$port 5u*" > /proc/switch/eth0/vlan/0/ports
netmsg 192.168.1.255 "Press reset now, to enter Failsafe!"
}; done
} || netmsg 192.168.1.255 "Press reset now, to enter Failsafe!"
sleep 2
eval ${FAILSAFE:+failsafe}
lock -w /tmp/.failsafe
set_state preinit
echo /sbin/hotplug > /proc/sys/kernel/hotplug
ifconfig $ifname 0.0.0.0 down
mount_root
exec /sbin/init
