The BR6104 is based on the ADM5106 SoC (ARM7TDMI) and Broad Net Technology real-time OS (SOHO.BIN).
BR6104K is actually the same model as BR6104KP, but without USB connector, 48MHz oscillator e.t.c. soldered on the board, and without printer support in the firmware. It is possible to add missed USB parts and have a full BR6104KP model. The instructions are there. Edimax BR6104K/KP is rebranded Sweex LB000021 so PCBs are identical (PCB REV B. uses one DRAM chip, REV A two ones).
The BR6104KP is the same as the BR6104K but has two USB 1.1 master ports that can be used to connect a printer and use it as a print server. Also you can use USB Flash disk for root filesystem (needed patch for usb root device).
The BR6104P is based on the ADM5106 ARM7 SoC.
The BR6104S is based on the Samsung ARM SoC.
The BR6104W is based on the ARM7 SoC.
The BR6014Wg is based on the ADM5120 (BGA) and has one WAN port and 4 port LAN swith. Additionally, it has a WiFi 802.11G MiniPCI card: AirVast WN360g, which based on the Intersil / GlobespanVirata / Conexant PRISM GT chipset.
Routers's PCB has a place for the second MiniPCI slot, but socket is not soldered.
The BR6104WP is based on ARM7 CPU.
Adding a serial port
On the board there is a 8pin connector called JP2 that can be used as serial port. You can connect a serial level shifter (such as the MAX232 familly) to these pins. Its pins are:
1.RX 2.+3.3V 3.nc 4.nc 5.nc 6.nc 7.TX 8.GND
Use the 3.3V as supply for the MAX chip, don't use the 5V from the USB. (You wan't to convert to the processors' levels, not the USBs')
It is possible to use Siemens mobile phone datacable as converter.
Set you terminals' speed to 115200 (8N1). When powering press SPACE three times to get into the boot menu.
ADM5120 Boot: Linux Loader Menu ==================== (a) Download vmlinuz to flash ... (b) Download vmlinuz to sdram (for debug) ... (c) Exit Please enter your key :
Here you can choose to:
- Upload new firmware to Flash (option a), this might be dangerous. Image must be with CSYS header.
- Upload new vmlinuz to RAM (option b), nice for trying your own. Image must be usual vmlinuz.
- Exit (option c), continue to load the vmlinuz already in Flash.
The uploading is done with the XModem protocol.
Tip: I experienced a lot of problems with the XModem transfers, which seemed to have something to do with the start of the transfer. For me, it helps to type some junk into the router, before starting up the XModem protocol. So I type "a" for upload to flash, then hold the arrow-up key for a couple of seconds, then start the transfer. However, this might be voodoo, your mileage may vary.
Edimax recently released the sources to their kernel sources (2.4.18) and other tools such as Busybox.
- http://www.edimax.co.uk/download/Linux-SC.zip (slow as hell)
- http://obm.edimax.com.tw/Edimax-Tools.tgz Toolchains
- Modify Edimax BR-6104K / Sweex LB000021 firmware
- Edimax BR-6104K / Sweex LB000021 Forum
- Edimax BR6104 overview Flash format, Serial console, e.t.c. (Cyrillic!)
- How to add USB by Jeroen Domburg
- The german Magazine elektor did publish an Article about hacking the SWEEX-Router
- Midge is a linux OpenWRT-like mini-distribution for ADM5120 based routers , such as Edimax BR-6104K