Asus WL-HDD / Yakumo Wireless Storage 60

The device is supported in OpenWrt (White Russian and later). Confirmed running Version are WhiteRussian RC6 and 0.9 (and Kamikaze too, see this forum post). You need to install the openwrt-brcm-2.4-<type>.trx firmware images. 

Bootloader: PMON
System-On-Chip:  Broadcom BCM4702KPB
CPU Speed: 200 MHz (125 for some)
Flash size: 4 MB, MX 29LV320ATTC-90
RAM: 16 MB, Hynix HY57V283220T-7
Wireless: integrated Broadcom BCM4306 802.11b/g Wireless LAN Controller
Ethernet: 1x network controller, no switch
IDE-Controller: Yes, PROMISE PDC20265R
USB: 1x USB 1.1, second port possible (see "Second USB Port" on this page)
Serial: no, but possible to add an external UART
JTAG: yes

The boot_wait NVRAM variable is on by default. Resetting to factory defaults via reset button or mtd erase nvram is not safe on this unit.

Installation

See OpenWrtDocs/Hardware/Asus/Flashing.

WARNING: After installation, you must manually perform "nvram set wan_proto=none; nvram commit". Otherwise you will have a spurious dhcp client running on eth1, which is actually the LAN interface, and this can cause problems. See https://dev.openwrt.org/ticket/580 and http://forum.openwrt.org/viewtopic.php?pid=35411

IDE drivers and usage

See IdeStorageHowTo then LocalFileSystemHowTo.

USB drivers and usage

USB storage

See UsbStorageHowto then LocalFileSystemHowTo. For a second usb-port see in the hardware section.

Run the following to install the modules and tools: 

  ipkg install kmod-usb-ohci kmod-usb-storage kmod-vfat kmod-usb-printer lsusb

Add the usb modules to /etc/modules: 

...
usbcore
usb-ohci
scsi_mod
sd_mod
usb-storage
fat
vfat

USB network

If you need a second wire ethernet device, it is possible to use a usb ethernet dongle. Possible hardware is listed on the nslu2 homepage. Then you have to compile the usbnet driver, as it isn't in the standard OpenWrt distribution. Alternatively, you can download it from below.

With the Linksys USB200M Rev2 are some problems because of changed hardware. Perfectly supported on linux > 2.6.18 it lacks support in the 2.4.X series. There's a backport to 2.4.27 on http://sourceforge.net/project/showfiles.php?group_id=138561, and with little modifications it compiles on a 2.4.30 well.

After the usb core modules insert the modules 

insmod mii
insmod usbnet

and voila: 

Feb 26 22:31:09 (none) kern.info kernel: usb.c: registered new driver usbnet
Feb 26 22:31:10 (none) kern.info kernel: eth3: register usbnet usb-00:04.0-1, Linksys usb200m v2 AX88772 USB 2.0 Ethernet

kernel modules: usbnet_mii.tar.bz2

source patch: usbnet_ax88772.patch

Run root filesystem from the harddisk

GerardBraad describes some additional steps on how to make the root filesystem run from the harddisk. These instructions can be found in the forum at http://forum.openwrt.org/viewtopic.php?id=7373

Network Configuration

As listed in OpenWrtDocs/Configuration the network interfaces are configured as eth1 (wired) and eth2 (wireless). They are bridged in default installation.

Device as Router

To open the bridge you have to change the interfaces for lan only to eth2, set the wan device to eth1 and configure these devices as you like (static, dynamic, etc) (http://forum.openwrt.org/viewtopic.php?pid=37730) 

lan_ifnames=eth2
lan_ifname=br0
wan_ifname=eth1
wan_device=eth1
wan_gateway=<SomeIp>
wan_netmask=<SomeMask>

If you want to use the wireless interface as lan and the ethernet as wan device, you also have to change the init script for the nvram because it restores it to default bridge behavior at startup. Uncomment two lines in /etc/init.d/S05nvram (maybe there should be a used nvram variable for optional bridge/router mode?): 

# hacks for asus
[ "$boardnum" = "asusX" ] && {
        debug "### asus hacks ###"
        case "$(($(nvram get et1phyaddr)))" in
                1) # WL-HDD
# don't need this as a router
#                    lan=eth1
#                    wan=none

Device as WLAN client

I got some strange double pings and lots of 

Feb 15 19:27:00 (none) kern.warn kernel: eth2: received packet with  own address as source address

entries in the logfile when using it as wireless client. this is a interference with the br0 and physical ethernet device; you can get rid of them by changing the lan interface to the physical instead of the virtual (br0) device. 

# when wireless is the LAN interface and wired the WAN
nvram set lan_ifname=eth2
nvram commit

Hardware

Internal Images

Internal Images

If you want to open the device (maybe for exchanging the disk) remove the screws below the two little rubber-pads (could be that there are no screws, as on my yakumo. just pull on). Then slide the mainboard with the HD on it out of the case by carefully pulling the front plate.

Nvram Reset

If you made a mistake while configuring the router and it isn't reachable anymore via network, there is a possibility to reset the device config. To do that, plug the power off during booting, much times, at different timings. You can exploit a bug in the bootloader. The new ip is 192.168.1.1 then (attention, not the standard 192.168.1.220) and boot_wait is on. Now you are able to use tftp for uploading new images. source

JTAG

asus_wlhdd_jtag

Harddisk

The device is/was available with 60GB discs, but it works perfectly with larger discs - for example a WD 160GB Harddrive: ( WDC WD1600BEVE-00UYT0 )

Power Consumption

The device ships with a 2A 5V switch-mode power supply terminating to a DC plug. The 2A rating may be to cover maximum spin-up current for the disk drive and the maximum USB 1.1 device current.

JamesCameron tested a device as follows:

state

current

comment

spin-up

0.91A

disk drive by default spun itself up on power up

booting

0.64A

booted

0.76A

disk drive consumes more power if it is recently accessed

idle

0.63A

disk drive may have a self-directed standby mode

active

0.91A

running an md5sum of a large file on disk drive

standby

0.48A

disk drive in host-directed standby mode, using hdparm -y, further access by kernel spun the drive up

sleep

0.48A

disk drive in host-directed sleep mode, using hdparm -Y, no apparent effect on power, but prevented further access to drive by kernel

Internal RTC

The internal RTC can be accessed with the following kernel module: kmod-rtc.o (source code) 

insmod kmod-rtc.o
mknod /dev/rtc c 10 135

And this will show the hardware time: 

cat /dev/rtc

The RTC can be set with --systohc, the system time can be set with --hctosys using the following script: 

#!/bin/sh
case "$1" in
         --hctosys)
                [ -c /dev/rtc ] && /bin/cat /dev/rtc|(IFS=:;read Y M D dow h m s; /bin/date -s $M$D$h$m$Y.$s)
                ;;
         --systohc)
                [ -c /dev/rtc ] && /bin/date +%Y:%m:%d:%w:%H:%M:%S >/dev/rtc
                ;;
         *)
                echo "Usage: $0 {--systohc|--hctosys}" >&2
                ;;
esac
# From: [http://forum.openwrt.org/viewtopic.php?id=5606] and [http://wl500g.info/showthread.php?t=1642]

rtc init script: 

#!/bin/sh
# I put this init script in there: /etc/init.d/S59rtc
# thanks for improvement of the SXX number!
# check for /dev/rtc (which seems to disappear at a reboot- right?)
# then check if the module is loaded and if not load it an
cat /dev/rtc || ( ( lsmod |grep -q kmod-rtc ) || ( insmod /lib/modules/kmod-rtc.o ); ( mknod /dev/rtc c 10 135 ) )
#then execute the script found above
/bin/hwclock.sh --hctosys

Second USB Port

Found on wl500g.info that on a wl500g it is possible to use the second port of the internal hub. As it looks the same on the wl-hdd, i tried this and it works too. Benefits of this hardware mod? First, no need for a external hub if using a printer or something permanently. Second, using it as internal port for another mods (audio?) without external cables.

What to do? Not difficult, just put some wires with two resistors on the pcb, that's it. But: Build it at your own risk, you'll loose the warranty, and I'm not responsible for any damages of the router or of any device connected to it!

Step for step:

Maybe you've seen the log entries of the usb driver: 

Jan  1 00:00:15 (none) kern.info kernel: usb.c: new USB bus registered, assigned bus number 1
Jan  1 00:00:15 (none) kern.info kernel: hub.c: USB hub found
Jan  1 00:00:15 (none) kern.info kernel: hub.c: 2 ports detected

The two ports of the hub have on each data line a resistor to the ground. So we solder two wires on the third and fourth pin of the resistor array. In the posting mentioned above they use a resistor serial in each data line of 15 Ohms. I haven't had them, so I'm using some with 10 Ohms. In the original connection between these resistors and the usb-socket is a resistance of 1.5 Ohms, so maybe that's enough too? Anyway. To get the power supply for the port i'm using the pads of a not assembled capacitor. It's not really correct, as there must be a control of the power consumption of the usb device, but it works. I use the socket of a usb extension cable. Voila, here it is: 

Feb 25 20:48:36 (none) kern.info kernel: hub.c: new USB device 00:04.0-2, assigned address 2

See the usb_mod photos with the details.

External Interface

This device has some solder pads for a external interface like the WL-500G. For using it please read this forum postings.

OpenWrtDocs/Hardware/Asus/WL-HDD (last edited 2008-08-27 22:09:44 by steve_m)

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