Re: Debugging U-Boot standalone apps on Tegra 2 board

[Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>]

On 08/23/2012 10:38 AM, Nuno Santos wrote:
> Hi
> 
> I'm currently running U-Boot on the Tegra2 Harmony board and I'd
> appreciate some help on how to debug U-Boot standalone applications. I'm
> currently stuck with some nasty bugs and without a debugger it will be
> extremely painful to fix them.
> 
> I read that using a JTAG device seems to be the best option. According
> to the technical specs of the Harmony board, JTAG is supported and
> looking at the board, there's apparently a debug port (J10). However,
> this port looks too tiny to be a regular JTAG interface.
> 
> Do you have any idea if a JTAG debugger is indeed supported? If so,
> could you please recommend me one that is compatible with this board?
> Otherwise, are you aware of an alternative approach for debugging the
> system?
> 
> I really appreciate your help on this. Thanks in advance.

I've CC'd a couple of people more involved in U-Boot and JTAG debugging.
For Harmony, I believe you need an external debug board to expose the
JTAG connector in a standard form-factor. I don't know if these are
available; it's probably best to ask whoever you got your Harmony from.