From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from yx-out-2324.google.com (yx-out-2324.google.com [74.125.44.29]) by ozlabs.org (Postfix) with ESMTP id 436DFDE3D0 for ; Tue, 6 Jan 2009 12:04:55 +1100 (EST) Received: by yx-out-2324.google.com with SMTP id 8so2317571yxg.39 for ; Mon, 05 Jan 2009 17:04:54 -0800 (PST) Sender: Matt Sealey Message-ID: <4962AE34.3030707@genesi-usa.com> Date: Mon, 05 Jan 2009 19:04:52 -0600 From: Matt Sealey MIME-Version: 1.0 To: sumedh tirodkar Subject: Re: yaboot: text mode or graphics mode? References: <495AA4A7.409@genesi-usa.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Cc: linuxppc-dev@ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , They should be mapped into PCI address space with the rest, you should note though that a bunch of people have asked this a bunch of times and the response is usually null. If you want to output debugging info, try a serial port, or if you're still at the point in boot where the OF is still around, you can still output to it (check prom_init.c) and if not, the open firmware framebuffer console driver is your best friend.. sumedh tirodkar wrote: > Isn't there any other way that i can access the VGA registers? So as > to reconfigure them... > > -Sumedh > > On Wed, Dec 31, 2008 at 4:15 AM, Matt Sealey wrote: >> sumedh tirodkar wrote: >>> I just found out that openfirmware boots into graphics mode(non-text >>> mode). Now i wish to switch back to text mode. how do i do this? >> Unfortunately unless you are running some kind of yaboot-accessible or >> firmware-accessible x86 BIOS emulation, this isn't possible. >> >> -- >> Matt >>