From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Warren Subject: Re: Debugging U-Boot standalone apps on Tegra 2 board Date: Thu, 23 Aug 2012 11:40:58 -0600 Message-ID: <50366B2A.7080306@wwwdotorg.org> References: <50365CA3.6000103@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <50365CA3.6000103-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Nuno Santos , Tom Warren , Allen Martin Cc: "linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" List-Id: linux-tegra@vger.kernel.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.