From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nishanth Menon Subject: Re: OMAP3: Linux Without a Boot Loader? Date: Mon, 26 Apr 2010 20:31:57 -0500 Message-ID: <4BD63E8D.1090701@gmail.com> References: <4BD61F7D.3060208@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-gy0-f174.google.com ([209.85.160.174]:50032 "EHLO mail-gy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752531Ab0D0BcB (ORCPT ); Mon, 26 Apr 2010 21:32:01 -0400 Received: by gyg13 with SMTP id 13so6526789gyg.19 for ; Mon, 26 Apr 2010 18:32:00 -0700 (PDT) In-Reply-To: Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Juha Kuikka Cc: Nishanth Menon , "linux-omap@vger.kernel.org" , Greg Ungerer On 04/26/2010 07:22 PM, Juha Kuikka wrote: > On Mon, Apr 26, 2010 at 4:19 PM, Nishanth Menon wrote: >> >> The final image looks as follows: >> +---------------------+ >> | Configuration | >> | Header | >> +---------------------+ >> | "Sty" | >> +---------------------+ >> | kernel piggy | >> | bzImage | >> +---------------------+ >> > Looks very interesting! I was thinking of trying something like this > after ELC but unfortunately real work got the better of me. > > This Configuration Header stuff looks very similar to what TI's > Davinci-chips use. They call it AIS but from a short dive into > omap-u-boot-utils it is very similar, encoded commands to mask ROM > code to initialize HW and load image(s). > > Now I need to find some time to do this with the Beagle. > > This may be a stupid question but is the CH format documented somewhere? Yep, I had blogged about it some time back: http://nishanthmenon.blogspot.com/2009/05/configuration-header-no-more-x-loader.html You can find more about CH and references there, and yes, Beagle is one of the first platforms I had working :) Regards, Nishanth Menon