From owner-freebsd-sparc  Sun Jan 11 22:00:52 1998
Return-Path: <owner-freebsd-sparc@FreeBSD.ORG>
Received: (from majordom@localhost)
          by hub.freebsd.org (8.8.7/8.8.7) id WAA02482
          for sparc-outgoing; Sun, 11 Jan 1998 22:00:52 -0800 (PST)
          (envelope-from owner-freebsd-sparc@FreeBSD.ORG)
Received: from sunny.bog.msu.su (sunny.bog.msu.su [158.250.20.1])
          by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id WAA02474
          for <freebsd-sparc@FreeBSD.ORG>; Sun, 11 Jan 1998 22:00:38 -0800 (PST)
          (envelope-from dima@bog.msu.su)
Received: from localhost (dima@localhost)
         by sunny.bog.msu.su (8.8.8/8.8.8) with SMTP id IAA12107;
         Mon, 12 Jan 1998 08:59:45 +0300 (MSK)
         (envelope-from dima@bog.msu.su)
Date: Mon, 12 Jan 1998 08:59:44 +0300 (MSK)
From: Dmitry Khrustalev <dima@bog.msu.su>
To: Jason Evans <jasone@canonware.com>
cc: freebsd-sparc@FreeBSD.ORG, Ian Logan <ian@nmsu.edu>,
        Chris Toshok <toshok@hungry.com>
Subject: Re: How UltraAX boots
In-Reply-To: <Pine.BSF.3.96.980111042449.533O-100000@mozart.canonware.com>
Message-ID: <Pine.GSO.3.95.980112085721.12010A-100000@sunny.bog.msu.su>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: owner-freebsd-sparc@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.org

> 
> We're going to be facing a big bang problem as far as booting goes.  In
> order to get a serial console working, it looks like we'll have to have
> the UPA, PCI, and EBus code working, in addition to serial code (just need
> to port the serial code).  So, we'll pretty much have to make the whole
> motherboard work all at once, unless we can route the console through OBP
> (seems unlikely, or at least problematic). Yuck.
> 

	NetBSD/powerpc uses OBP(OpenFirmware) for all it's device drivers. 
You may want to look at it. 

	-Dima