Re: [kt-forum] Linux on a SBC

Zack Brown (zbrown@lynx.neu.edu)
Fri, 12 Mar 1999 10:11:19 -0500 (EST)


Hi Andreas,

I think the person you spoke to was not talking about the Kernel Traffic
forum. They probably meant linux-kernel. You can find out how to join it by
going to http://www.tux.org/lkml/

I suspect your kernel was compiled for pentium, and needs to be recompiled
for a 386. I also suspect you'll need some rescue floppies from somewhere. I
get mine from Debian. Forget about copying files from DOS. Boot with the
rescue floppy, mount the hard drive, install the proper kernel, run lilo,
and reboot.

But you'll probably get much stronger help on linux-kernel. I'm ccing them

Zack

On Fri, 12 Mar 1999, Andreas C. Doering wrote:

> Someone pointed me to the "linux kernel" list for my problem.
> Note I am no Linux expert, I even refuse to use C as possible.
> We want to use a Single Board Computer (386 EX processor, 5 MByte Flash
> ROM,
> 4 MByte dynamic RAM, SMC 91C94 Ethernet) with Linux.
> We used a 2.0.20 kernel with the serial console patch.
> We tried this kernel on a Pentium from one of our clusters
> and after some hacking it works fine.
> It boots via bootpd and allows remote log in afterwards.
> Now we tried to use this kernel on the SBC and it fails
> totally:
> Since we have MSDOS on the board, we use
> loadlin zimage console=0,19200n8
> and the last we see (via terminal on COM1, the board does not have
> a CRT, the MSDOS is patched to work over serial line)
> is
> Loading .................. (number of dots is different than here).
> The only "debugging tool" we used so far is switching on a
> user LED of the board via outb_p.
>
> In the moment I have no idea what to look for.
> We already checked right handling of the A20 line and the switching to
> the
> protected mode.
> Every test (you get only one Bit of information everytime) requires
> a partial kernel recompile,
> a split, two ymodem transfers (from Windows, do not know why the board
> does not want to download from a linux terminal program)
> a "copy /b xaa + xab zimage" on the board and than starting.
>
> This is not ... mhm effective!
> Blind debugging seems to be even more an act of dispair.
> Any tips are welcome.
> Andreas
>
>
> -----------------------------------------------------------------
> Andreas Doering
> Medizinische Universitaet zu Luebeck
> Institut fuer Technische Informatik
> Ratzeburger Allee 160
>
> D-23538 Luebeck
> Germany
>
> Tel.: +49 451 500-3741
> Fax: +49 451 500-3687
> Email: doering@iti.mu-luebeck.de
> ----------------------------------------------------------------
>

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