f00nera

we luv the 2202 fonera wlan router, because it has a nice usb 2.0 port

Architecture: MIPS Vendor: Accton/FON Bootloader: Redboot System-On-Chip: Atheros AR2315A CPU Speed: 180 Mhz Flash-Chip: MX 5L6405MC-20G Flash size: 8 MiB RAM: 32 MiB Wireless: Atheros AR2315A WiSoC 802.11b/g (integrated) Ethernet: Marvell 88E6060 Fast Ethernet Switch USB: NEC D72010 USB 2.0 Controller (1 Port) Serial: Yes JTAG: No Opening the case

Note: This will void your warranty!

• Remove the both screws under the front rubber feet
• Gently tear off the top cover

The serial pins are located on the right side of the PCB.

 
 ________________________... 
/ [ eth ] [ eth ] [usb] 
|        _________ 
|       |         | 
|       | 88E6060 | 
|[VC]   |_________|
|[TX]
|[RX]     ________ 
|[GD]    |        |
|        | AR2315 | 
|        |________|      ...

• Serial ports settings are 9600@8n1.
• RXD = fonera→host
• TXD = host→fonera

for installing open-wrt we use a little but very nice and simple tool called a….

just open a shell on your router using ssh (e.g. with putty)

opkg update

and yfter we updated our packages, we can start installing

opkg install cryptsetup openvpn screen tcpdump vim

this will install cryptsetup openvpn screen tcpdump and vim on your router

opkg install kmod-scsi-core kmod-usb-core kmod-usb2 kmod-usb-storage
opkg install cfdisk e2fsprogs swap-utils

now plug in your usb drive and reboot

reboot

after a reboot, we should now find our thumbdrive

cat /proc/partitions

and mount it

mkdir -p /mnt/root
mount /dev/sda2 /mnt/root

Copy all fs into new mounted partition.

tar cvO -C / bin/ etc/ root/ lib/ sbin/ usr/ www/ var/ | tar x -C /mnt/root
mkdir -p /mnt/root/tmp && mkdir -p /mnt/root/dev && mkdir -p /mnt/root/proc && mkdir -p /mnt/root/jffs && mkdir -p /mnt/root/mnt/openwrt && mkdir -p /mnt/root/sys

Use the new partition as root partition

Here comes the interesting part. Create a new script in init.d to mount the usb drive at startup.

cat > /etc/init.d/mountusb << EOF
#!/bin/sh /etc/rc.common
EXTERNAL_PARTITION=/dev/discs/disc0/part1

START=06

start () {
echo "loading USB and ext3 modules"

for module in usbcore usb-ohci uhci ehci-hcd scsi_mod sd_mod usb-storage jbd ext3; do
insmod $module
done
sleep 2s

[ "$FAILSAFE" != "true" ] && [ -b $EXTERNAL_PARTITION ] && {
mount $EXTERNAL_PARTITION /mnt/root
[ -x /mnt/root/sbin/init ] && {
mount -o move /proc /mnt/root/proc && \
pivot_root /mnt/root /mnt/root/mnt/openwrt && {
mount -o move /mnt/openwrt/dev /dev
mount -o move /mnt/openwrt/tmp /tmp
}
}
}
}
EOF

chmod +x /etc/init.d/mountusb
cd /etc/rc.d/ && ln -s ../init.d/mountusb S06mountusb

We may also need some swap just in case the router runs out of memory

mkswap /dev/sda4
swapon /dev/sda4