Re: [jornada] de-brick

Javier,

I didn't realize that you were unable to load short.o . This is
almost certainly the problem.

Could you use 'lsmod' and 'rmmod' to see if you can
get the parport driver to unload (and let go of the parallel
port itself)?

I am using 2.4.2-2 here and am able to run the script
'short_load' on the binary supplied. If you want to recompile
it, please be sure to modify the make file to point at your
kernel source include files.

Please let me know if you make any progress (or run into
more problems!)

Thanks
jca

Javier Marcet wrote:

> * Jamey Hicks <jamey.hicks_at_hp.com> [021009 18:28]:
>
> >>>The intermittent nature of the problem with JTAG makes me think it is
> a
> >>>signal integrity problem. I have run into the same thing here on
> >>>occasion. If you soldered connections, make sure none are cold
> solder
>
> [...]
>
> >There are two things that are important here. First, that the wires
> are
> >not shorted together. Second, that there is a good solid connection
> for
> >each wire.
>
> [...]
>
> >The value of the resistors is not important. The resistors are there
> to
> >prevent ringing on the jtag signals. However, such long wires can
> cause
> >noise on the signals, so if you still have problems I recommend
> >shortening it to a half meter or so.
>
> I've been thinking about the problem I have, and also tried everything I
> could think off. What I saw is that without the Jornada connected to the
> parallel port, jflash gives one of the messages I sometimes get with it
> connected.
> Also, since I compile my own kernel and have not been using the parallel
> port for a long time, it might something to do with my kernel config. I
> have the parport compiled as module, and also have the lp module.
> Loading 'lp', as to use a printer, I cannot load short.o, since it says
> the port is busy.
> Could you tell me what is exactly needed to use jflash? Besides, in case
> I insmod a short.o compiled on my system, and thus not needing to use
> short_load, would that be a problem?
>
> I made an 'alias /dev/shortint short' on my modules.conf, for devfsd to
> be able to locate it.
> BTW, I am using kernel 2.4.20-pre8-ac3
>
> --
> Javier Marcet <jmarcet_at_pobox.com>
> Saint Louis University, Madrid Campus
Received on Mon Oct 14 2002 - 15:21:41 EDT