The main Harmony PC board (1162) connects via ribbon cable to a debug board (1137) w/20-pin JTAG, RS-232 serial port, etc. if I remember correctly (haven't touched my Harmony in a long time). Once you have the debug board, any JTAG dongle will connect - we use the Flyswatter from TinCanTools, and/or the parallel-port JTAG adapters, as well as the Lauterbach. As Stephen says - whoever gave you the Harmony originally should be able to help you get the debug board to go with it. HTH, Tom > -----Original Message----- > From: Stephen Warren [mailto:swarren@xxxxxxxxxxxxx] > Sent: Thursday, August 23, 2012 10:41 AM > To: Nuno Santos; Tom Warren; Allen Martin > Cc: linux-tegra@xxxxxxxxxxxxxxx > Subject: Re: Debugging U-Boot standalone apps on Tegra 2 board > > 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. -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html