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Wistron RDAA-81 (CA8-PRO)

This device doesn't have official support yet, only 3rd party patches and firmwares are available.

Unofficial Release Status

OpenWrt Version Status Firmware Patches
Backfire 10.03.1 Released LAN Router v1.1 LAN Router v1.1
Attitude Adjustment 12.09 Released LAN Router v2.0 LAN Router v2.0-RC1
Chaos Calmer 15.05 Failed - Ticket #21877 Switch+AP Mode -

Hardware Highlights

CPU Ram Flash Network USB Serial JTag
Atheros AR2313A @180MHz 32MiB 4MiB 1 No Yes Yes



Architecture: MIPS 4Kc
Vendor: Wistron NeWeb Corporation
Bootloader: zImage loader (LZMA)
Wireless System-On-Chip: Atheros AR2313A
CPU Speed: 180 MHz
Flash-Chip: Spansion S29AL032D
Flash size: 4 MiB
RAM: 32 MiB
Wireless: Atheros AR5112A
Ethernet: Marvell 88E6060-RCJ1
Serial: 115200, 8-N-1

It is possible to install OpenWRT via web interface:

  • "telnet routerip 23"
  • login with your password
  • enter "z_debug signature disable"
  • use web interface to upgrade firmware using "OpenWrt-RDAA-81-LAN-Router-2.0-RC1-zImage.bin"
  • reboot router via web interface
  • wait until router starts responding to ping
  • telnet 23

General Information

Serial - JP1


Serial console represent hardware interface between router onboard serial port and PC. It is usually used to see bootprocess and interact boot loader. This is possible only if opening the case and attaching a TTL line converter cable. Then you can choose the boot process operation by sending a correct number on bootup.

The serial communication signals on the RDAA-81 are ranging from 0 to 3.3V. These must not be connected directly to a RS232 cable, which operates at much broader voltage range (-12 to +12V). An appropriate level coupler must be built for this purpose. There are many such circuits on the net, and the simplest ones might use a common MAX232 chip.

JP1 pinout:



This JTAG port follows the 14 pin EJTAG 2.5 specification. (This is verified as working).

GPIO table

GPIO Description
0-3 Not connected (free pins on the PCB)
4 WLAN LED - yellow
5 WLAN LED - blue
6 Reset button
7 Unknown

Free GPIO pins on the PCB (back side):


The 3rd party firmware image is compatible with factory bootloader only.


You need a tftp server with OpenWrt-RDAA-81-LAN-Router-1.1-zImage.bin boot image in it's root folder, but you should rename it to 'zImage'.

TFTP server IP address:

Wait for the boot menu and choose '2'.

============================================ AR2313 Boot Loader Interface V1.03e00 2006-1-02 (zImage) ============================================ Please choose the operation: 1: Load system code to SDRAM via TFTP. 2: Load system code then write to Flash via TFTP. 3: Boot system code via Flash. 4: Load calibration data then write to Flash via XModem. 1 You choosed 2 TFTP mode ... Ethernet use flash address Ethernet driver loaded serverip = filename = zImage waiting tftp loading ... / tftp download success ! Erasing ..... sector: 69/69 0xbffe0000 Verifying ..... Done src=a0800000, dest= bfc50000, end= bfff0000 Programming ..... Done Verifying ..... Done Erasing ..... sector: 0/ 0 0xbfc00000 src=800ffd40, dest= bfc00000, end= bfc02000 Programming ..... Done Verifying ..... Done Copying image from flash to SDRAM ... Linux version ( (gcc version 4.3.3 (GCC) ) #6 Wed Oct 17 16:44:27 EDT 2012 console [early0] enabled CPU revision is: 0001800a (MIPS 4Kc) Determined physical RAM map: memory: 02000000 @ 00000000 (usable) Initrd not found or empty - disabling initrd Zone PFN ranges: Normal 0x00000000 -> 0x00002000 Movable zone start PFN for each node early_node_map[1] active PFN ranges 0: 0x00000000 -> 0x00002000 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 8128 Kernel command line: console=ttyS0,115200 rootfstype=squashfs,jffs2 Primary instruction cache 16kB, VIPT, 4-way, linesize 16 bytes. Primary data cache 16kB, 4-way, VIPT, no aliases, linesize 16 bytes NR_IRQS:128 PID hash table entries: 128 (order: 7, 512 bytes) console handover: boot [early0] -> real [ttyS0] Dentry cache hash table entries: 4096 (order: 2, 16384 bytes) Inode-cache hash table entries: 2048 (order: 1, 8192 bytes) Memory: 29240k/32768k available (2183k kernel code, 3528k reserved, 417k data, 136k init, 0k highmem) Calibrating delay loop... 179.81 BogoMIPS (lpj=899072) Mount-cache hash table entries: 512 net_namespace: 1008 bytes NET: Registered protocol family 16 bio: create slab <bio-0> at 0 NET: Registered protocol family 2 IP route cache hash table entries: 1024 (order: 0, 4096 bytes) TCP established hash table entries: 1024 (order: 1, 8192 bytes) TCP bind hash table entries: 1024 (order: 0, 4096 bytes) TCP: Hash tables configured (established 1024 bind 1024) TCP reno registered NET: Registered protocol family 1 Board Configuration Recovery for CA8-based devices (C) 2012 dtech(.hu) zConfig: Supported device found: Wistron RDAA-81 (CA8-PRO). zConfig: MAC address recovered for WLAN interface: 00:0B:6B:3F:44:06. zConfig: MAC address recovered for LAN interface: 00:0B:6B:3F:44:07. Radio config found at offset 0x10000(0x100) squashfs: version 4.0 (2009/01/31) Phillip Lougher Registering mini_fo version $Id$ JFFS2 version 2.2. (NAND) (SUMMARY) Š 2001-2006 Red Hat, Inc. msgmni has been set to 57 alg: No test for stdrng (krng) io scheduler noop registered io scheduler deadline registered (default) gpiodev: gpio device registered with major 254 gpiodev: gpio platform device registered with access mask FFFFFFFF Serial: 8250/16550 driver, 1 ports, IRQ sharing disabled serial8250: ttyS0 at MMIO 0xbc000003 (irq = 37) is a 16550A eth0: Atheros AR231x: 00:0b:6b:3f:44:07, irq 4 ar231x_eth_mii: probed eth0: Marvell 88E6060 PHY driver attached. Marvell Switch Port Mapper for CA8-based devices (C) 2012 dtech(.hu) zSwitch: WAN interface patch applied on Ethernet Port #3. eth0: attached PHY driver [Marvell 88E6060] (mii_bus:phy_addr=0:10) physmap platform flash device: 00800000 at 1e000000 physmap-flash.0: Found 1 x16 devices at 0x0 in 8-bit bank CFI mfr 0x00000001 CFI id 0x000000f9 Amd/Fujitsu Extended Query Table at 0x0040 Amd/Fujitsu Extended Query version 1.1. number of CFI chips: 1 cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness. cmdlinepart partition parsing not available Partition Parser for CA8-based devices (C) 2012 dtech(.hu) zLoader: supported device found: Wistron RDAA-81 (CA8-PRO) zLoader: kernel length = 0xd715d, crc = 0x6ae9595. 7 zLoader partitions found on MTD device physmap-flash.0 Creating 7 MTD partitions on "physmap-flash.0": 0x000000000000-0x000000002000 : "boardconfig" 0x000000000000-0x000000050000 : "loader" 0x000000050000-0x000000130000 : "kernel" 0x000000130000-0x0000003f0000 : "rootfs" mtd: partition "rootfs" set to be root filesystem mtd: partition "rootfs_data" created automatically, ofs=2E0000, len=110000 0x0000002e0000-0x0000003f0000 : "rootfs_data" 0x0000003f0000-0x000000400000 : "boarddata" 0x000000050000-0x0000003f0000 : "firmware" 0x000000000000-0x000000400000 : "wholeflash" Registered led device: wlan_yellow Registered led device: wlan_blue TCP westwood registered NET: Registered protocol family 17 802.1Q VLAN Support v1.8 Ben Greear <> All bugs added by David S. Miller <> VFS: Mounted root (squashfs filesystem) readonly on device 31:3. Freeing unused kernel memory: 136k freed Please be patient, while OpenWrt loads ... - preinit - Press the [f] key and hit [enter] to enter failsafe mode - regular preinit - jffs2 not ready yet; using ramdisk mini_fo: using base directory: / mini_fo: using storage directory: /tmp/root - init - Please press Enter to activate this console. device eth0.1 entered promiscuous mode br-lan: port 1(eth0.1) entering forwarding state PPP generic driver version 2.4.2 ip_tables: (C) 2000-2006 Netfilter Core Team NET: Registered protocol family 24 nf_conntrack version 0.5.0 (512 buckets, 2048 max) CONFIG_NF_CT_ACCT is deprecated and will be removed soon. Please use nf_conntrack.acct=1 kernel paramater, acct=1 nf_conntrack module option or sysctl net.netfilter.nf_conntrack_acct=1 to enable it. ath_hal: module license 'Proprietary' taints kernel. Disabling lock debugging due to kernel taint ath_hal: 2009-05-08 (AR5212, AR5312, RF5111, RF5112, RF2316, RF2317, REGOPS_FUNC, TX_DESC_SWAP, XR) ath_ahb: trunk wlan: trunk wlan: mac acl policy registered ath_rate_minstrel: Minstrel automatic rate control algorithm 1.2 (trunk) ath_rate_minstrel: look around rate set to 10% ath_rate_minstrel: EWMA rolloff level set to 75% ath_rate_minstrel: max segment size in the mrr set to 6000 us jffs2_scan_eraseblock(): End of filesystem marker found at 0x0 jffs2_build_filesystem(): unlocking the mtd device... done. jffs2_build_filesystem(): erasing all blocks after the end marker... done. mini_fo: using base directory: / mini_fo: using storage directory: /overlay BusyBox v1.15.3 (2012-05-28 12:49:53 EDT) built-in shell (ash) Enter 'help' for a list of built-in commands. _______ ________ __ | |.-----.-----.-----.| | | |.----.| |_ | - || _ | -__| || | | || _|| _| |_______|| __|_____|__|__||________||__| |____| |__| W I R E L E S S F R E E D O M Backfire (10.03.1, r29638) ------------------------ * 1/3 shot Kahlua In a shot glass, layer Kahlua * 1/3 shot Bailey's on the bottom, then Bailey's, * 1/3 shot Vodka then Vodka. --------------------------------------------------- root@RDAA-81:/#

Your device is ready to use with OpenWrt Backfire 10.03.1.

Ethernet ports

The OpenWrt firmware defines the interfaces in a different way, because the factory firmware doesn't have WAN port.

Hardware Hacks



toh/wistron/rdaa-81.txt · Last modified: 2016/03/23 12:07 by dtech