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[ts-7000] Re: [ts-7400] open_eth problems

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Subject: [ts-7000] Re: [ts-7400] open_eth problems
From: "Andy Mercier" <>
Date: Fri, 28 Mar 2008 15:58:19 -0000
Hi Matt,

Although I suppose you are using Debian...

There's a different kernel build for the TS-7400, see:

ftp://ftp.embeddedarm.com/ts-arm-sbc/ts-7400-linux/distributions/

filename: tslinux-09-18-2006-ts7400os.tar.bz2

I have access to both a TS-7300 and TS-7400 and although I haven't
tried to do what you have I would suspect it won't work without
changes in many areas. Just copying a working TS-7300 system has the
potential to fail on a TS-7400 for a multitude of reasons.

Also as Peter pointed out, you'd be making and having the board
execute code that tries to talk to some hardware that's not there. You
could run into similar issues in that the TS-7300 filesystem is setup
to download code to the Cycloone II FPGA, for example.

----
Andy

--- In  "PeterElliot" <> wrote:
>
> Hi Matt,
> 
> I thought the open_eth module was for the FPGA supplied second 
> ethernet port. It would not be needed for the 7400 as it only has
> one cpu provided port.
> 
> Regards,
> 
> PJE
> 
> --- In  "matt_stone_uk" <matt.stone.uk@> 
> wrote:
> >
> > Hi Guys,
> > 
> > I recently bought a TS7400 as part of a final year project. I have
> > been working with the 7300 for the past 6 months with relatively few
> > problems, but decided to switch to the 7400 because I needed AC'97.
> > 
> > At the moment I'm trying to get the 7400 to the same state I had the
> > 7300 in, which was using WiFi and Bluetooth USB dongles.
> > 
> > The problem I'm experiencing is that when I go to load the open_eth
> > module for use with wireless, I get a seg fault (something I didn't
> > experience with the 7300 modules), dmesg gives the following:
> > 
> > eth1: Open Ethernet Core Version 1.0
> > Unable to handle kernel paging request at virtual address 000e0080
> > pgd = c12fc000
> > [000e0080] *pgd=050cc001, *pmd = 050cc001, *pte = 00000000, *ppte =
> > 00000000
> > Internal error: Oops: 7
> <SNIP>
> > 
> > 
> > also, lsmod reports:
> > 
> > :net# lsmod
> > Module                  Size  Used by    Not tainted
> > open_eth                4664   1  (initializing)
> > 
> > Frustratingly, even rmmod refuses to work:
> > :net# rmmod open_eth
> > open_eth: Device or resource busy
> > 
> > I've tried using the working modules from the 7300, but they also
> > segfault on this board, and I've tried it with the USB stick plugged
> > in and removed. Further, I've reverted back to the original 256MB SD
> > image size (I'm using a GB card), redownloaded all the tarballs, and
> > created a fresh install using TS Logic's howto, but the module STILL
> > segfaults. 
> > 
> > Anyone else experienced this? 
> > 
> > Thanks for any help or pointers,
> > 
> > Matt
> >
>



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