From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.lixom.net (lixom.net [66.141.50.11]) by ozlabs.org (Postfix) with ESMTP id E0973DDE1F for ; Sat, 1 Mar 2008 15:58:09 +1100 (EST) Date: Fri, 29 Feb 2008 23:02:50 -0600 From: Olof Johansson To: Josh Boyer Subject: Re: Sequoia build with KDBG Message-ID: <20080301050249.GA23099@lixom.net> References: <20080221213313.97814DDF55@ozlabs.org> <20080222164210.48628DE0A9@ozlabs.org> <20080222145224.7349cf36@weaponx> <200802292133.m1TLXqv3012273@e36.co.us.ibm.com> <20080229153534.684aebf9@zod.rchland.ibm.com> <200802292230.m1TMUk4I005462@e31.co.us.ibm.com> <20080229165137.64acbebf@zod.rchland.ibm.com> <200803010023.m210NHwr011345@e2.ny.us.ibm.com> <20080229203015.0ada459e@zod.rchland.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <20080229203015.0ada459e@zod.rchland.ibm.com> Cc: Steve Heflin , linuxppc-embedded@ozlabs.org List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Fri, Feb 29, 2008 at 08:30:15PM -0600, Josh Boyer wrote: > > poor man's debugging works fine if a serial port is available, but my > > Sequoia platform doesn't get that far! I use u-boot to download and > > boot my image, and I don't get any serial output after the boot completes: > > By "poking characters out the serial port" I meant I literally coded up > assembly functions to setup MMU translations and poke hex values at hard > coded addresses. That's why it's "poor man's". If you had a working > serial port out of the box, that would be a luxury ;). Does 4xx have support for udbg and xmon? That would be a good first step in getting an in-kernel debugger facility going. -Olof