Sitecom WLR-2100 V2

• Manufacturer pages: information and support
• Forum: https://forum.openwrt.org/viewtopic.php?pid=345892

This device is not supported in the official OpenWrt builds. Experimental builds are available (see below).

* Possible with modifications.

According to WikiDevi, the Atheros AR1321 seems identical to the AR9341.

Note: This will void your warranty!

• Remove the four screws at the bottom of the device in each corner
• Remove the fifth screw located under the sticker

* LAN port numbers are reversed in OpenWrt.

The position is numbered from left to right when front facing the router.

Serial console is available on the J4 connector. No pin header is available, so you might want to solder a pin header on the PCB. Remove the solder from the holes, preferable with desoldering techniques such as litze wire. If not possible, use a 0.8 mm drill.

Do not connect Vcc. Only connect GND, TxD and TxR.

Serial communication might not be reliable. Oddly, it works well in boot command line mode. This needs more investigation.

According to the datasheet, the AR9341 supports USB 2.0 and JTAG. The USB data pins do not have soldering pads on the PCB. However, the pins are directly accessible on the chip, so an USB mod can be easily made with some soldering skills. The supplied experimental images are compiled with USB kernel modules. JTAG is available on the GPIO ports, but this is not tested yet.

Officially, only one version of the firmware is available for the WLR-2100 V2. However, some routers may be shipped with another older version of the firmware. The bootlog is based on the official firmware provided by Sitecom.

U-Boot 1.0.1 (Mar 14 2012 - 16:09:18)                                           
U-boot AP123                                                                    
DRAM:                                                                           
sri                                                                             
Wasp 1.1                                                                        
wasp_ddr_initial_config(280): Wasp (16bit) ddr1 init                            
Tap value selected = 0xf [0x0 - 0x1f]                                           
32 MB                                                                           
Top of RAM usable for U-Boot at: 82000000                                       
Reserving 235k for U-Boot at: 81fc4000                                          
Reserving 192k for malloc() at: 81f94000                                        
Reserving 44 Bytes for Board Info at: 81f93fd4                                  
Reserving 36 Bytes for Global Data at: 81f93fb0                                 
Reserving 128k for boot params() at: 81f73fb0                                   
Stack Pointer at: 81f73f98                                                      
Now running in RAM - U-Boot at: 81fc4000                                        
id read 0x1c15                                                                  
venid=1c,devid=15                                                               
Unknown flash device                                                            
Flash:  4 MB                                                                    
*** Warning *** : PCIe WLAN Module not found !!!                                
In:    serial                                                                   
Out:   serial                                                                   
Err:   serial                                                                   
                                                                                
Please choose the operation:                                                    
   1: Load system code to SDRAM via TFTP.                                       
   3: Boot system code via Flash (default).                                     
   4: Entr boot command line interface.                                         
                                                                                
3: System Boot system code via Flash.                                           
## Booting image at 9f040000 ...                                                
   Image Name:   Linux Kernel Image                                             
   Created:      2013-07-01   6:10:50 UTC                                       
   Image Type:   MIPS Linux Kernel Image (lzma compressed)                      
   Data Size:    1355370 Bytes =  1.3 MB                                        
   Load Address: 80002000                                                       
   Entry Point:  80006110                                                       
   Verifying Checksum at 0x9f040040 ...OK                                       
   Uncompressing Kernel Image ... OK                                            
No initrd                                                                       
## Transferring control to Linux (at address 80006110) ...                      
## Giving linux memsize in bytes, 33554432                                      
                                                                                
Starting kernel ...                                                             
                                                                                
Booting Atheros AR934x                                                          
init started: BusyBox v1.7.5 (2013-07-01 14:07:05 CST)                          
starting pid 672, tty '/dev/console': '/sbin/config_init'                       
mknod: /dev/ttyS0: File exists                                                  
mknod: /dev/ttyS1: File exists                                                  
Config Init version: 1.0.2.2 date: 2013/07/01                                   
Tue Jan  1 00:00:00 UTC 2013                                                    
mount: can't find /sys in /etc/fstab or /etc/mtab                               
ln: /lib/./modules: File exists                                                 
starting pid 724, tty '/dev/ttyS0': '/sbin/config_term'                         
************************************************************************        
*                            WLR-2100_3100                             *        
************************************************************************        
                                                                                
KernelApp/Ramdisk Ver:1.0.2.2                    Date:2013/07/01                
password:

The password lin17 can be used to login into the shell.

The bootargs report a different MTD layout compared to what is actually loaded by the kernel. Seems to be some left over code due to source recycling (NVRAM on Atheros)?

bootargs=console=ttyS0,115200 root=31:02 rootfstype=squashfs,jffs2 init=/sbin/init mtdparts=ar7240-nor0:256k(u-boot),64k(u-boot-env),2752k(rootfs),896k(uImage),64k(NVRAM),64k(ART)

# cat /proc/mtd
dev:    size   erasesize  name
mtd0: 00400000 00010000 "ALL"
mtd1: 00030000 00010000 "Bootloader"
mtd2: 00010000 00010000 "Config"
mtd3: 00340000 00010000 "Kernel"
mtd4: 001f0000 00010000 "apps"
mtd5: 00010000 00010000 "manufacture"
mtd6: 00010000 00010000 "backup"
mtd7: 00050000 00010000 "storage"
mtd8: 00010000 00010000 "caldata"

# cat /proc/partitions
major minor  #blocks  name

  31        0       4096 mtdblock0
  31        1        192 mtdblock1
  31        2         64 mtdblock2
  31        3       3328 mtdblock3
  31        4       1984 mtdblock4
  31        5         64 mtdblock5
  31        6         64 mtdblock6
  31        7        320 mtdblock7
  31        8         64 mtdblock8

# cat /proc/mounts
rootfs / rootfs rw 0 0
/proc /proc proc rw,relatime 0 0
/dev/mtdblock7 /storage jffs2 rw,relatime 0 0
/dev/mtdblock4 /apps squashfs ro,relatime 0 0

This in an experimantal build of OpenWrt. Use this firmware at own risk.

Version 0.1
- First experimental build for OpenWrt on WLR-2100 V2.
- Based on OpenWrt trunk (9d64efa1a23f31847f4a9bef9f3474a9cf3fadb3).
- The white OPS led serves as status led.
- OPS button needs configuration, does not work out of the box.
- Not intended for flashing.

Currently, loading the firmware via TFTP is the only possible way of running OpenWrt on the WLR-2100 V2. Permanent flashing will be available soon. Grab the Precompiled binaries, or apply the patch and build your own firmware with the OpenWrt Buildroot.

This part can be skipped if you want to use the precompiled binaries. Prior knowledge is required to build your own firmware. Please check out the documentation for more information on installing and using the OpenWrt Buildroot.

1. Install the OpenWrt Buildroot.
2. Apply the patch file to your OpenWrt buildroot (this modifies your OpenWrt source code, quilt patches will be available soon).
3. Configure your buildroot. A target profile for the WLR-2100 V2 should be available after applying the patch. For now, create a ramdisk to run OpenWrt on the WLR-2100 V2. Flashable images will be available soon.
4. Build your OpenWrt firmware.

Currently, no flashable images are available. However, you are able to load the OpenWrt firmware via serial and TFTP.

1. Create a TFTP server to serve the firmware file as 'ap.bin'.
2. Assign the static IP address 192.168.1.101 to the server and make sure the server is accessible for the router.
3. Connect the WLR-2100 V2 via serial, and load up a console to see the output.
4. During boot, keep tapping '1' to load system code to the SDRAM via TFTP.
5. OpenWrt should now boot!

For now, please report bugs on the forum thread. Maybe some day the device profile will be added to the OpenWrt master branch.

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