D-Link DSL-G604T

D-Link DSL-G604T ADSL2/2+ Wireless Router

Status

Works reliably for basic DSL, Ethernet operations. Wireless it still under development, cant vouch for how well that works currently.

Info

Architecture: MIPS (little endian)
Vendor: D-Link
Bootloader: ADAM2
System-On-Chip: TI AR7 TNETD7300
CPU Speed: 150 Mhz
Flash Size: 4 MiB
RAM Size: 16 MiB
Wireless: TI ACX111
Ethernet: IP175A
ADSL: TI AR7, ADSL2/2+ (up to 24Mbit/s)
USB: No

Image Generation

For the sake of keeping up to date use trunk, these settings where verified as working at revision 22452. Changes from the defaults are marked Disable that generated a working cutdown image.

FIXME Why disable wireless? FIXME Maybe enable mac80211-based wireless instead?

Target System (TI AR7)
Target Profile (Annex-A DSL firmware (default))
Target Images ---> JFFS2 **Disable**

Base system ---> wireless-tools **Disable** Note: Need to disable kmod-acx to turn this off.

Kernel modules ---> Network Devices ---> kmod-sangam-atm-annex-a ---> Configuration ---> Firmware ---> D7.05.01.00
Kernel modules ---> Wireless Drivers ---> kmod-acx **Disable**

NOTE: For some ISPs, you may need to select "Annex-B DSL firmware" and "kmod-sangam-atm-annex-b" instead of their annex-A equivalents.

FIXME For installs from OEM Firmware does the checksum from the tichsum utility need to be added for adam2 to boot it? Doesn't need once OpenWRT is on as ADAM2 gets patched. You can find some information about the tichsum utility here http://www.seattlewireless.net/DlinkDslG604t

OEM 'Easy' Installation

ADAM2 Access

Before flashing OpenWRT to the device the FTP server ADAM2 starts needs to be found, if the stock firmware is loaded on this model the steps are as such;

Connect to router with telnet, Username and password is admin (try root/admin if it does not work) Query the ADAM2 enviroment to discover the IP with;

# cat /proc/ticfg/env | grep my_ipaddress

If the IP is set it will be shown like this:

my_ipaddress    10.8.8.8

If it's not displayed, or to change it, it can be set with the command:

# echo "my_ipaddress 192.168.1.1" > /proc/sys/dev/adam2/environment

Set a static IP so a connection to the router can be established, and apply power to the router. There will be a few second window where a connection can established with FTP, Username and Password is adam2

Partitioning

The flash on the G604T device is divided into partitions. The offsets need to be changed to start OpenWrt on the device.

The original firmware uses these partitions (in physical order):

Bootloader name start end size use
mtd2 0x90000000 0x90010000 64 KiB Bootloader
mtd1 0x90010090 0x90091000 ~516 KiB Kernel
mtd0 0x90091000 0x903f0000 3452 KiB Root filesystem
mtd3 0x903f0000 0x90400000 64 KiB Configuration

and another "virtual" partition" that covers both mtd1 and mtd0

Bootloader name start end size use
mtd4 0x90010000 0x903f0000 3968 KiB Kernel + FS

The mtd2 partition contains the bootloader. Never touch it. If the bootloader gets corrupted, the router won't boot anymore (in that case reprogramming the entire flash with the JTAG should bring it back to life). Just to be safe, during normal usage the kernel won't allow you to overwrite it even if explicitly requested.

The mtd3 partition contains both the bootloader configuration and the original firmware settings. OpenWrt will ignore anything written in here. Don't touch it as well, or ADAM2 might get confused and unable to boot anymore.

To run OpenWRT of this device the partition layout need to be modified as follows (changes are in bold), the offset from the image generation section is needed here.

Partitions: (in physical ordering):

Bootloader name Kernel name Start End Use
mtd2 loader 0x90000000 0x90010000 Bootloader (ADAM2)
mtd1 linux 0x90010000 0x903f0000 Linux kernel (only the start address is used)
mtd0 rootfs 0x90010000 0x903f0000 Read-only squashfs + jffs2 filesystem (only the end address is used)
mtd3 config 0x903f0000 0x90400000 Original firmware configuration

the "virtual" partition remains unchanged as

Bootloader name Kernel name Start End Use
mtd4 rootfs_data 0x90010000 0x903f0000 Kernel + FS

To be more precise, the kernel, once booted, will map another "virtual" partiton as /dev/mtdblock4 that will point to the newly created jffs2 partition located inside mtd0. Just ignore it for this discussion.

Note that the end of mtd1 and the start of mtd0 are dummy addresses; OpenWrt auto-detects the boundary between the kernel and the file system. The extra addresses are only used by firmwares based on 2.4.x kernels.

The commands needed to make and check the above adjustments are;

quote "SETENV mtd1,0x90010000,0x903f0000"
quote "GETENV mtd1"

Check each partition before continuing, error here will likely brick the device.

Flashing

When this has been completed the image can be flashed to the Kernel+FS partition mtd4

quote "MEDIA FLSH"
binary
debug
hash
put "openwrt-ar7-squashfs.bin" "openwrt-ar7-squashfs.bin mtd4"
quote REBOOT
quit

The router will reboot and set itself up, do not remove power as this could break it. Leave it until the status light has a steady heartbeat, then it is safe to power down.

Configuration

WAN

To bring the WAN up, add the settings to the /etc/config/network file

config interface wan
        option ifname   ppp0
        option unit     0
        option proto    pppoa
        option encaps   vc
        option vpi      0 # get your actual VPI and VCI from your ISP
        option vci      38
        option username (your username here)
        option password (your password here)

If your ISP uses pppoe instead, the setup will looks like this:

config atm-bridge
        option unit     0
        option encaps   llc
        option vpi      0 # get these from your ISP
        option vci      38

config interface wan
        option ifname   nas0
        option proto    pppoe
        option username (your username here)
        option password (your password here)

Switch

As of r22728 the switch can be configured in this device, the drivers are included by default as is swconfig. The switch is a 5 port switch only 0-3 are available as ethernet ports and 4 is the CPU port. Documentation on configuring the switch can be found here

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inbox/dsl-g604t.txt · Last modified: 2014/02/13 07:38 by hhm