Pirelli DRG A226G / A226M

This device is NOT RECOMMENDED for future use with OpenWrt due to low flash/ram.
DO NOT BUY DEVICES WITH 4MB FLASH / 32MB RAM if you intend to flash an up-to-date and secure OpenWrt version onto it! See 4/32 warning for details.

1) This device does not have sufficient resources (flash and/or RAM) to provide secure and reliable operation.
This means that even setting a password or changing simple network settings might not be possible any more, rendering the device effectively useless. See OpenWrt on 4/32 devices what you can do now.

2) OpenWrt support for this device has ended in 2022.
19.07.10 was the last official build for 4/32 devices.

DSL will not work at all on devices with BCM63xx DSL chipset (due to unavailability of FLOSS driver for Broadcom chips). Consider this when choosing a device to buy, or when deciding to flash OpenWrt on your device because it is listed as supported.
See Broadcom DSL, Unsupported: DSL modem and Broadcom BCM63xx for details.

Prebuilt images from downloads.openwrt.org, from 18.06.2 up to and including 19.07.3, will not work: Those images hang at boot. → Fixed

Install OpenWrt (generic explanation)

To install OpenWrt you have to stop the system loading through the serial console. To do that you need a serial adapter/converter (that convert TTL +3.3V of router serial console to RS232 (+/-12V) or USB). I suggest to use USB serial converter!! Don't even try to go further without a serial adapter!!

You can buy USB serial converter adapter on Ebay (find CP2102 chipset), e.g. USB serial adapter based on Silicon Labs CP2102 (Ebay)

The firmware is based on OpenRG, I don't know how to backup this firmware. Continue at your risk!!!

You can try bcm63xx#dump.the.flash. It isn't a firmware backup but a whole flash backup --- danitool 2013/01/23 15:23

We need a way to backup it first. =)

  1. You need to setup a tftp server on some host (I can suggest to use dnsmasq for this) to serve the firmware image to the router.
  2. Now just download the latest stable image image for A226M
  3. Poweron the router - Stop the boot process: Through the serial console and a terminal program (like Hyperterminal, Putty portable, Teraterm) setup as 115200, 8 bit data, no parity bit, 1 stop bit, poweron the router and press any key to stop the system loading.
  4. Flash the new firmware via TFTP: I suggest to rename the firmware file downloaded as firmware.bin. Now you have to use the flashimage command to load the openwrt image, please don't use the f command. If you configure (with command c) the host ip address you can avoid it in the flashimage argument.
    CFE> flashimage
         eg. flashimage [hostip:]compressed_image_file_name
         es: flashimage
         es: flashimage firmware.bin   
  5. That's all, the device will automatically reboot and openwrt will be there :-)
  6. After the flashing of new firmware the router will reboot.
  • Using dnsmasq:
    dnsmasq -d --enable-tftp --tftp-root=`pwd` -p 0 #from the directory where firmware is previously downloaded

    where the is your server tftp

  • You can use also TFTP server like tftp32. Install tftpd32 and put the firmware file (I suggest to rename it as firmware.bin) in the same folder where you installed tftpd32.

The OpenWrt image may be rejected due to wrong CRC in kernel.

Boot detail with crc error:

*** Press any key to stop auto run (1 seconds) ***
Auto run second count down: 0
Trying to boot from previous MAIN image (0x65dba394) ...
Code Address: 0x65DBA394, Entry Address: 0x1970acf7
SGP - Flash Kernel Address: 0xBE020100
SGP - ulImgCrc : 0xD656A53B  
SGP - Tag->kernelLen: 0x0011FF00
SGP - Flash Kernel Address: 0xBE020100
Linux kernel CRC error.  Corrupted image?
SGP - Tag Kernel crc : 0xD656A53B - calculated: 0x9D91518A 
SGP - Decompression Kernel length: 0x91669AEE pucSrc: 0xBE02010C
Trying to boot from previous RECOVERY image (0x80010000) ...
Code Address: 0x80010000, Entry Address: 0x80010000
SGP - Flash Kernel Address: 0xBE560100
SGP - ulImgCrc : 0x80DF5773  
SGP - Tag->kernelLen: 0x001B008C
SGP - Flash Kernel Address: 0xBE560100
SGP - Tag Kernel crc : 0x80DF5773 - calculated: 0x80DF5773 
SGP - Decompression Kernel length: 0x0000001C pucSrc: 0xBE56010C
Decompression OK!
Entry at 0x80010000

To fix it, execute the command mtd fixtrx linux after the first boot.

Architecture MIPS
Vendor Broadcom
bootloader CFE
Board ID DWV-S0
System-On-Chip BCM6358KFBG
CPU/Speed BMIPS4350 V1.0 / 300 MHz BMIPS Dual Core
Flash-Chip :?:
Flash size 8 MiB or 16MiB
RAM 32 MiB or 64MiB
Wireless 1x miniPCI (no card connected) or Ralink RT2661T miniPCI
Ethernet Broadcom BCM5325 w/ vlan support swconfig
Internet ADSL2+
VoIP 2x FXS ports, Le88266 chip
USB 1×2.0H + 1×1.1D
Serial Yes

The serial port is J10, on the left of the switch chip, see photos

6 GND RX 5
4 GND Vcc (3.3V) 3
2 GND TX 1

Serial connection parameters are 115200 8N1

NB: A short circuit between pins RX and TX at power up puts the device in a recovery mode with IP from where a new firmware can be uploaded. OpenWrt binaries are refused, though, because of invalid CRC.

Jtag port is J9 near the SoC and the minipci socket, see photos

It seems to be a mips e-jtag 14 pin connector with columns swapped (used from the other side?).

12 SRST_N GND 11
10 TCK GND 9

CPU Chip ID: 00000110001101011000000101111111 (0635817F)

I used the JTAG port with urjtag, just use the svn version. Useful info on "Neuf Box 4 JTAG"

You should probably try the Open On-Chip Debugger

Install OpenWrt on this router :-)

To have a better match with DRG A226M functions, I suggest you to use it with the following network configuration. Using the interneal editor vi, check and edit /etc/config/network file.

For more info read switch config. FIXME To be reviewed

config interface loopback                                                       
        option ifname   lo                                                      
        option proto    static                                                  
        option ipaddr                                               
        option netmask                                               
config 'switch' 'eth1'                                                          
   option 'enable'      '1'                                                     
   option 'enable_vlan' '1'                                                     
   option 'reset'       '1'                                                     
config 'switch_vlan' 'vlan0'                                                    
   option 'vlan'       '0'                                                      
   option 'device'     'eth1'                                                   
   option 'ports'      '0 1 2 5t'                                               
config 'switch_vlan' 'vlan1'                                                    
   option 'vlan'       '1'                                                      
   option 'device'     'eth1'                                                   
   option 'ports'      '3 5t'                                                   
config interface lan                                                            
        option ifname   eth1.0 
        option type     bridge                                                 
        option proto    static                                                  
        option ipaddr                                             
        option netmask                                                                                                  
config 'interface' wan 
    option 'ifname'  'eth1.1'                                                   
    option 'proto'   'dhcp'

To have the led matching DRG A226M features, using the internal editor vi edit the /etc/config/system file. Add:

config 'led'
	option 'sysfs'		'power:red'
	option 'trigger'	'heartbeat'

config 'led'
	option name		lan
	option 'sysfs'		'usr1:red'
	option trigger netdev
	option 'dev'	'eth1.0'
	option mode 'rx tx'

config 'led'
	option name		wan
	option 'sysfs'		'usr2:red'
	option trigger netdev
	option 'dev'	'eth1.1'
	option mode 'rx tx'

The OpenWrt firmware don't provide by default webui. just telnet interface. To configure the modem through the web interface you should install WebUI (like Luci). To do that you can follow the instructions

OpenWrt - Install WebUI (Luci)

opkg update
opkg install luci
opkg update
opkg install kmod-rt61-pci

Reboot system to activate WiFi.

2016-09-25 12.09 works correctly, 15.05.01 suffer of https://dev.openwrt.org/ticket/18228 on my device. (dpeddi)

CFE version 1.0.37-8.7 for BCM96358 (32bit,SP,BE) Build Date: lun apr 2 10:48:55 CEST 2007 (gpaolo@buildserver) Copyright (C) 2000-2005 Broadcom Corporation. Boot Address 0xbe000000 Initializing Arena. Initializing Devices. Parallel flash device: name AM29LV320MT, id 0x2201, size 8192KB CPU type 0x2A010: 300MHz, Bus: 133MHz, Ref: 64MHz CPU running TP0 Total memory: 33554432 bytes (32MB) Total memory used by CFE: 0x80401000 - 0x80527ED0 (1208016) Initialized Data: 0x8041D940 - 0x8041F700 (7616) BSS Area: 0x8041F700 - 0x80425ED0 (26576) Local Heap: 0x80425ED0 - 0x80525ED0 (1048576) Stack Area: 0x80525ED0 - 0x80527ED0 (8192) Text (code) segment: 0x80401000 - 0x8041D938 (117048) Boot area (physical): 0x00528000 - 0x00568000 Relocation Factor: I:00000000 - D:00000000 Resetting Secondary CPU... Board IP address : Host IP address : Gateway IP address : Run from flash/host (f/h) : f Default host run file name : vmlinux Default host flash file name : bcm963xx_fs_kernel Boot delay (0-9 seconds) : 1 Boot image (0=latest, 1=previous) : 0 Board Id (0-6) : DWV-S0 Number of MAC Addresses (1-32) : 13 Base MAC Address : 02:10:18:xxxxxxxxx PSI Size (1-64) KBytes : 24 Main Thread Number [0|1] : 0 *** Press any key to stop auto run (1 seconds) *** Auto run second count down: 1 web info: Waiting for connection on socket 0. CFE>

A226m has a Le88266 VoIP chip onboard providing 2x FXS ports (= 2x ports you can connect analog phones to in order to make calls leveraging VoIP). This functionality is not natively available in OpenWrt, it requires additional drivers. There is an opensource project, called bcm63xx-phone https://github.com/pgid69/bcm63xx-phone, providing these drivers, and I managed to compile and make it work on this router in combination with Asterisk, tested on both Attitude Adjustment and Barrier Breaker. The developer of the driver directly tested it on a Huawei box, but it also works on A226M. There is no ipk package available at the moment, so you need to compile your own .ipk's package or include them in the image of openwrt. Once you do this, you will be able to connect an analog phone to the FXS ports and leverage it in combination with a cheap VoIP service provider.

If you choose to compile the .ipk's and try to install them on a ready-available openwrt image form repository, be aware that opkg might complain about kernel version not being exaclty the same. Just force installation and it should work. I was able to make phone calls originating from an analog phone connected to the A226M and routed to a VoIP provider using SIP signalling and Asterisk as call manager.

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  • Last modified: 2024/02/12 08:58
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