From owner-freebsd-ppc@FreeBSD.ORG  Thu Jul 24 03:41:32 2008
Return-Path: <owner-freebsd-ppc@FreeBSD.ORG>
Delivered-To: powerpc@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 4FE781065676
	for <powerpc@freebsd.org>; Thu, 24 Jul 2008 03:41:32 +0000 (UTC)
	(envelope-from imp@bsdimp.com)
Received: from harmony.bsdimp.com (bsdimp.com [199.45.160.85])
	by mx1.freebsd.org (Postfix) with ESMTP id EC37A8FC1A
	for <powerpc@freebsd.org>; Thu, 24 Jul 2008 03:41:31 +0000 (UTC)
	(envelope-from imp@bsdimp.com)
Received: from localhost (localhost [127.0.0.1])
	by harmony.bsdimp.com (8.14.2/8.14.1) with ESMTP id m6O3c4OS036400;
	Wed, 23 Jul 2008 21:38:07 -0600 (MDT) (envelope-from imp@bsdimp.com)
Date: Wed, 23 Jul 2008 21:38:17 -0600 (MDT)
Message-Id: <20080723.213817.1661913390.imp@bsdimp.com>
To: benno@jeamland.net
From: "M. Warner Losh" <imp@bsdimp.com>
In-Reply-To: <D33D2388-8237-406D-8162-1DF9013277A2@jeamland.net>
References: <20080723.164741.163264646.imp@bsdimp.com>
	<D33D2388-8237-406D-8162-1DF9013277A2@jeamland.net>
X-Mailer: Mew version 5.2 on Emacs 21.3 / Mule 5.0 (SAKAKI)
Mime-Version: 1.0
Content-Type: Text/Plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Cc: powerpc@freebsd.org
Subject: Re: Device trees
X-BeenThere: freebsd-ppc@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Porting FreeBSD to the PowerPC <freebsd-ppc.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-ppc>,
	<mailto:freebsd-ppc-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-ppc>
List-Post: <mailto:freebsd-ppc@freebsd.org>
List-Help: <mailto:freebsd-ppc-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-ppc>,
	<mailto:freebsd-ppc-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 24 Jul 2008 03:41:32 -0000

In message: <D33D2388-8237-406D-8162-1DF9013277A2@jeamland.net>
            Benno Rice <benno@jeamland.net> writes:
: 
: On 24/07/2008, at 8:47 AM, M. Warner Losh wrote:
: 
: > Does FreeBSD/powerpc on the MPC85xx machine use the fake device open
: > firmware tree stuff from uboot (aka dts in the linux kernel sources)?
: 
: I've got a machine (Mikrotik RouterBOARD 333, uses MPC8321) that has  
: this.  I've been working with one of the dtc developers to port their  
: code over to FreeBSD.

Cool!

: I'm trying to hide it underneath our existing  
: OpenFirmware stuff.  I've got a few more bugs to get out of it but I  
: can probably send you some patches early next week...

That's basically what Linux does.  They force the boot loader to pass
in all kinds of information about the system.  This makes a lot of
sense, I think.

Are you booting /boot/loader?  Or directly booting the kernel from
uboot?

In message: <106CEF8A-EA8A-48BC-BAF7-B9C112F58A92@mac.com>
            Marcel Moolenaar <xcllnt@mac.com> writes:
: No, it doesn't.

Is there any reason it doesn't?  Having looked at the dtc stuff, it
seems to have all the requirements of device enumeration that we
talked about at BSDcan...

Warner