From owner-freebsd-hackers@FreeBSD.ORG  Wed Feb  9 08:14:24 2005
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 5EA3616A4CE
	for <hackers@freebsd.org>; Wed,  9 Feb 2005 08:14:24 +0000 (GMT)
Received: from gatekeeper.syskonnect.de (gatekeeper.syskonnect.de
	[213.144.13.149])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 0D8BB43D31
	for <hackers@freebsd.org>; Wed,  9 Feb 2005 08:14:23 +0000 (GMT)
	(envelope-from gheinig@syskonnect.de)
Received: from syskonnect.de (skd.de [10.9.15.1])j198EZ91009549;
	Wed, 9 Feb 2005 09:14:35 +0100 (MET)
Received: from syskonnect.de (localhost [127.0.0.1])
	by syskonnect.de (8.12.11/8.12.11) with ESMTP id j198EGB5015214;
	Wed, 9 Feb 2005 09:14:20 +0100 (MET)
Message-ID: <4209C640.3070502@syskonnect.de>
Date: Wed, 09 Feb 2005 09:13:52 +0100
From: Gerald Heinig <gheinig@syskonnect.de>
User-Agent: Mozilla Thunderbird 0.5 (X11/20040208)
X-Accept-Language: en-us, en
MIME-Version: 1.0
To: Stephan Uphoff <ups@tree.com>
References: <420731DD.3050206@syskonnect.de>
	<1107798981.6309.9.camel@palm.tree.com> <42088232.1030001@syskonnect.de>
	<4208B9C2.6020007@syskonnect.de> <1107888844.6309.221.camel@palm.tree.com>
In-Reply-To: <1107888844.6309.221.camel@palm.tree.com>
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
cc: hackers@freebsd.org
Subject: Re: Firewire blues
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 09 Feb 2005 08:14:24 -0000

Stephan Uphoff wrote:
> There are two ways using kgdb to debug a target with firewire.
> The first way basically replaces the slow serial cable for communication
> to the remote target gdb stub.
> The second way uses the remote DMA capabilities of firewire to directly
> read memory of the target WITHOUT using any debugging software/stub on
> the target. (Think remote core file)
> 
> Greg Lehey wrote a nice kernel debugging tutorial that explains both
> types of firewire debugging.
> http://www.lemis.com/grog/Papers/Debug-tutorial/tutorial.pdf
> 
> This should get you started with only minor adjustments (gdb->kgdb) .

This is actually the paper I'm using. I've followed the instructions on 
both methods, but I can't get it to work. The direct machine-machine 
connection is fine (ie. the one with dconschat). It's the kgdb 
connection that doesn't work.
I presume it worked out of the box for you then?

Cheers,
Gerald