Finally I've found how to mount USB stick at boot without patching /etc/preinit or anything else.
These the step I've followed (revision 14152):

* make menuconfig
** Target System -> Infineon/ADMtek ADM5120 [2.6]
** Target Profile -> Edimax BR-6104KP (Unofficial)
** busybox -> Configuration -> Coreutil -> stty (don't know if necessary)
** removed some packages (to fit firmware size): dnsmasq, dropbear, iptables (will be installed later with opkg)
* make kernel_menuconfig
** Machine selection -> Infineon/ADMtek ADM5120 SoC based machines
** Device drivers -> Memory Technology Device (MTD) support:
*** disable Automatically set 'rootfs' partition to be root filesystem
*** disable Automatically split 'rootfs' partition for squashfs
*** disable Automatically find and split TRX partitions
** Device drivers -> SCSI device support:
*** {*} SCSI device support
*** <*> SCSI disk support
** Device drivers -> [*] USB support:
*** <*> Support for Host-side USB
*** [*] USB device filesystem
*** <*> USB Storage support
*** <*> ADM5120 HCD support (EXPERIMENTAL)
** File systems -> <*> Ext3 journalling filsystem support
** Kernel hacking -> Default kernel command string (last setting): console=ttyS0,115200 root=/dev/sda1 init=/etc/preinit ro rootdelay=10

Then run make and wait for OpenWRT to be built. Then under bin/ you'll find:
* openwrt-adm5120-br-6104kp-squashfs-webui.bin
* openwrt-adm5120-br-6104kp-squashfs-xmodem.bin
* openwrt-adm5120-rootfs.tgz

Format a USB-stick with ext3 fs (assuming /dev/sdb1) and untar the rootfs:
# mkfs.ext3 /dev/sdb1
# mount /dev/sdb1 /mnt
# cd /mnt
# tar -xzf /path/to/openwrt/bin/openwrt-adm5120-rootfs.tgz

Then plug the usbstick and upload openwrt-adm5120-br-6104kp-squashfs-xmodem.bin to the board via xmodem (use the attached script). When upload is done, watch the board booting with minicom.

Hope this helps, I'm available for troubleshooting on this.

Attachments:
xmodem-upload:
########################################
#!/usr/bin/expect -f

set dev "/dev/ttyUSB0"
set file "openwrt-adm5120-br-6104kp-squashfs-xmodem.bin"

system "stty 115200 ignbrk -brkint -icrnl -imaxbel -opost -onlcr -isig -icanon -iexten -echo -echoe -echok -echoctl -echoke < $dev"

spawn -open [ open $dev r+ ]
send_user "* Waiting for the prompt, please turn on the router\n"
expect "ADM5120 Boot:"
send_user "\n* Got prompt, waiting for the second prompt\n"
send "   "
expect "Please enter your key : "
send_user "\n* Got second prompt, uploading firmware $dev\n"
send "a"
close
system "sx -vv $file > $dev < $dev"
spawn -open [ open $dev r+ ]
expect "Please enter your key : "
send_user "\n* Got second prompt, booting\n"
send "c"
########################################

(Last edited by heruan on 30 Jan 2009, 02:58)

hi, first I got kernel panic because he didn't find /dev/sda1 (tried two usb-sticks), and with an fresh checkout of revision 14152 I couldn't do ** Machine selection -> Infineon/ADMtek ADM5120 SoC based machines any more.

Make sure you have the command `quilt' installed (on Debian/*buntu: apt-get install quilt) before make kernel_menuconfig.

Hi,
turned out that quilt was not neccessary. I found that in make kernel_menuconfig

<*> USB Mass Storage support

is not selected by default - but needed ;-)
So thanks, it works, and could someone move this thread to howto section?

(using r14177)

(Last edited by rxgknpbo on 26 Jan 2009, 16:54)

Nice!

It would not be too hard to change Squidge to work this way, if zero changes to /etc/preinit is a design objective.
This file:  https://squidge.svn.sourceforge.net/svn … usbroot.py

Can be altered to programatically perform the instructions in the above guide, and I've no problem if someone wants to do that.  PM me if interested.

The design objective of Squidge was to remove all traces of MTD from the kernel, to free up the maximum possible RAM for executing programs, but if that's not what people want then it can easily be changed.  I'm not really supporting it any more, so it can go any direction people want now.

I'm glad someone else is using the expect script, but with fdexpect under Python it's more flexible, because you can interact with the terminal at the end of the upload, and there's no need to launch minicom at all.  See https://squidge.svn.sourceforge.net/svn … adm_upload

Finally, I never got around to changing it in Squidge but rootwait, is better than rootdelay=10.  It waits, if necessary until the stick is plugged in (can't remember who told me about this).

rgds,
biff.

@rxgknpbo, you wrote

I have the same problem with actual r14251.
How did you solve the problem ?
Regards
Reinhard

Hi, i deleted everything and started with a fresh debian virtualbox :-/ I don't know whether it's important to run make menuconfig and make before make kernel_menuconfig.

Hi,
thank you rxgknpbo, I did it the same way. New install of Sidux in Virtualbox and the last tar-file from http://downloads.openwrt.org/kamikaze/8.09_RC2/.
1. make menuconfig
2. make
3. make kernel_menuconfig
Then I got the adm5120 in the Machine Selection.

I configured everything the way heruan wrote, run make a second time, but I got kernel panik.
I am working with a BR6104K with USB mod from http://spritesmods.com/?art=sweexusb. I don't know if this is different from the BR6104KP ?

I am not sure if the USB-Port is working properly. Is there any possibilty to test basic functions of the port ?
regards
Reinhard

(Last edited by nick_colog on 30 Jan 2009, 08:51)

hi, if you really "configured everything the way heruan wrote", you missed <*> USB Mass Storage support in kernelconfig.

You were right - this option was still missing.
But unfortunately I still get the kernel panic.

I am still in doubt about the (modded) USB Interface if it's working as it should.
Is it possible that you place your working bin-file and the stick-image somewhere to download for me, just to be sure I have a working Image.
I will give it a last try.
Regards
Reinhard

hi, just try squidge ;-)
http://sourceforge.net/projects/squidge (bin-file under boot in the .tar.bz2)

Hi,

I'm a newbie and just trying to follow this steps to get a first build but unfortunately I should me missing some things:

I tried the Kamikaze 8.09 RC2 source because don't know where(or if I should) to get revision 14152.
Using that I encounter this problems:

* make menuconfig
** busybox -> Configuration -> Coreutil -> stty (don't know if necessary)
----> Cant find busybox menu! 

* make kernel_menuconfig
** Machine selection -> Infineon/ADMtek ADM5120 SoC based machines
----> Cant find Infineon/ADMtek ADM5120 SoC based machines entry!

What am I doing wrong?

Nuno

Thanks to rxgknpbo, but the Squidge image is producing the same kernel panic.
I checked the mod again, but didn't find any visible failure in the soldering. I capitulate !

@nunojpg: Read all posts ! You wil have the correct machine selection after the first run of "make". Be patient, teh first run took me more than one hour.  Then you can do "make kernel_menuconfig" and after that you have to run "make" a second time for the final image.
You will find "busybox" - starting make menuconfig, then
Base system->busybox->configuration->coreutils->(scroll down, down)(*)stty
regards
Reinhard

I'm also getting the Kernel Panic with Omnima board.

@biff: sounds like squidge is somehow "deprecated" ? squidge was cool as it worked out-of-the box and brought all packages. But as its never sure how long those high specialiced distributions are maintenanced, I prefer a way using original OpenWrt. Is there an easy way that any "end-user" can config his OpenWrt squidge like?

@nick_colog: Is your USB crystal oscillating? Is your USB-stick partitioned as /dev/sda oder /dev/sda1 ?

That was my problem! The usb stick partition was /dev/sdb.
Used fdisk to create /dev/sdb1 and it now boots OK.

Thanks!

Squidge is broken, and doesn't work at the moment :-(.  I'm not sure when I will be able to fix it.  The problem is Squidge builds were always using the latest version of packages, so although it baselined against specific kamikaze trunk version that wasn't good enough to keep it working!  My bad.

biff.

replacing "rootdelay=10" with "rootwait" works great

Well...the router is working...but not the ethernet interface! I cannot ping it from the computer...I can only access by the serial port console...
I put Squidge back and it worked again.

Any option missing in the kernel configuration?

hm now as you say it - have the same problem, but I won't have time for further testing the next days.

After all I can ping but only to the WAN port, same as Squidge.

My test was not very scientific

It's all working.
Only problem is that it appears to have to few RAM.

For example, if I run "opkg update" two times, the second will fail because there is not enough memory available any more.
I don't why the first time leaves things in memory, but it happens...

So I can only imagine to create a swap partition...

Nuno

Swap won't help.  This is opkg, it incorrectly reports lack of memory, when in fact it's config files are messed up.

I'm getting Deja-vu now, from when I first made Squidge!

So...is there any thing that helps?