Re: ARM debugging via JTAG?

[Torsten Mohr <tmohr@s.netic.de>]

Hi,

thanks for that hint, but it must be possible somehow to debug
an ARM chip with a parallel port (/dev/parport*).

Has anybody got some info about what's necessary to debug
an ARM?  I took a look into gdb/rdi-share/ardi.c, hostchan.c
and devsw.c .
I still don't know exactly what's necessary to debug an ARM,
has anybody got a hint or some documentation for me what's
necessary to debug that chip?
I once wrote some very basic code to send some commands to
my ARMs JTAG state machine and could stop the core, but
couldn't yet send commands to the core.
http://www.s.netic.de/tmohr/linux.html


Best regards,
Torsten.


> On Tue, Jun 25, 2002 at 10:28:02PM +0200, Torsten Mohr wrote:
> > Does anybody know of patches for GDB that enable ARM debugging
> > via JTAG over the parallel port?
>
> I don't know of any that do JTAG directly on the parallel port.
>
> There are several ARM JTAG interfaces that are supported by gdb:
>
>   ARM EmbeddedICE   (uses rdi target via serial/parallel)
>   EPI Jeeni         (uses rdi target via serial or Ethernet)
>   ARM MultiIce      (via some server program run on Windows)
>   Macraigor/OCDemon (via remote target)
>   Abatron BDIxxx    (via remote target)