Linksys WRV54G
The WRV54G is an X-Scale based 4-port router with WiFi support. The released firmware is based on Jungo's OpenRG. Initial investigation was done by Seattle Wireless. Another source of information is http://www.phj.hu/wrv54g/.
Note that the WRV54G is known as a Gemtek GTW5715 when configuring the Linux kernel. Currently, the default OpenWrt configuration does include kernel support for this device. To use this device, an image must be built from the OpenWrt sources and use make kernel_menuconfig to select the GTW5715.
If you can confirm that OpenWrt is running on this device (i.e. you or someone else has tested it), please update the data accordingly. → Click View/Edit data
| Model | Version | Supported Since Rev | Supported Since Rel | Supported Current Rel | Device Techdata |
|---|---|---|---|---|---|
| Speedport W 502V | 10.03.1 | snapshot | View/Edit data |
Hardware Highlights
| CPU | Ram | Flash | Network | USB | WiFi | Serial | JTag |
|---|---|---|---|---|---|---|---|
| IXP425 | 32MB | 8MB | 4×1 | No | Yes | Yes* | Yes* |
- Requires opening the unit.
Installation
Installation involves replacing the manufacturer's firmware (Bootloader and OS).
The bootloader will be replaced with a custom Redboot bootloader.
The OS you have to compile yourself 
. The WRV54G does not work with the stock builds avaible.
To replace the original firmware you have three options:
- Telnet (requires fw 2.03)
- Serial (requires soldering)
- JTAG (requires soldering)
Telnet was disabled with firmware 2.10 and higer. Downgrade first. Simple feed te upgrade page from the web interface the older firmware. wrv54g_2.03_fw.rmt Please note that the above file was found somewere on the internets. It may not be safe to use outside a controlled envrionment.
- Build your kernel and rootfs
- Obtain a custom Redboot from here: http://mysite.verizon.net/jvasco/openwrt/rb-wrv54g-ROM.bin.
- Then follow the installation procedure described for Actiontec MI424-WR.
Hardware
Info
Opening the case
Note: This will void your warranty!
Main PCB
Serial
There is a 10-pin header on the motherboard.
| Pin | Signal | Pin | Signal |
|---|---|---|---|
| 1 | TX | 2 | +3.3V |
| 3 | - | 4 | +3.3V |
| 5 | - | 6 | GND |
| 7 | RX | 8 | GND |
| 9 | - | 10 | - |
JTAG
How to connect to JTAG interface, and how to reflash the device with JTAG tools
See port.jtag for more JTAG details.
GPIO
| Bit | Function |
|---|---|
| 0 | Power LED (a) |
| 1 | Internet LED |
| 2 | Power LED (b) |
| 3 | Factory reset button |
| 4 | DMZ LED |
| 5 | SPIS_N |
| 6 | SPID |
| 7 | SPIC |
| 8 | LED (not populated but could be) |
| 9 | Wireless-G LED |
| 10 | PCI INTB |
| 11 | PCI INTA |
| 12 | SPIQ |
| 13 | PCI reset |
| 14 | PCI clock |
| 15 | IXP expansion bus clock |
Specific Configuration
Interfaces
The default network configuration is:
| Interface Name | Description | Default configuration |
|---|---|---|
| eth0 | LAN ports (1 to 4) | 192.168.1.1 |
| eth1 | WAN port | DHCP |
Buttons
There is one reset button.
Hardware mods
The WRV54G has a second unpopulated mini-PCI connector. It's possible to solder in an additional connector: http://www.flickr.com/photos/24017027@N00/199751093/