From owner-freebsd-ppc@FreeBSD.ORG Sun Jun 20 20:13:03 2010 Return-Path: Delivered-To: freebsd-ppc@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 67362106566C for ; Sun, 20 Jun 2010 20:13:03 +0000 (UTC) (envelope-from paul@gromit.dlib.vt.edu) Received: from lennier.cc.vt.edu (lennier.cc.vt.edu [198.82.162.213]) by mx1.freebsd.org (Postfix) with ESMTP id 1B7598FC0A for ; Sun, 20 Jun 2010 20:13:02 +0000 (UTC) Received: from zidane.cc.vt.edu (zidane.cc.vt.edu [198.82.163.227]) by lennier.cc.vt.edu (8.13.8/8.13.8) with ESMTP id o5KKCWaB026891 for ; Sun, 20 Jun 2010 16:12:32 -0400 Received: from auth3.smtp.vt.edu (EHLO auth3.smtp.vt.edu) ([198.82.161.152]) by zidane.cc.vt.edu (MOS 4.1.8-GA FastPath queued) with ESMTP id IUC84282; Sun, 20 Jun 2010 16:12:32 -0400 (EDT) Received: from gromit.chumby.lan (c-98-249-7-145.hsd1.va.comcast.net [98.249.7.145]) (authenticated bits=0) by auth3.smtp.vt.edu (8.13.8/8.13.8) with ESMTP id o5KKCUv0012681 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO) for ; Sun, 20 Jun 2010 16:12:31 -0400 Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Apple Message framework v1081) From: Paul Mather In-Reply-To: <4C1E65A0.9030800@freebsd.org> Date: Sun, 20 Jun 2010 16:12:30 -0400 Content-Transfer-Encoding: quoted-printable Message-Id: <375212BA-21BF-4E05-B138-BDC4349A8C21@gromit.dlib.vt.edu> References: <4C1A253C.7040905@freebsd.org> <1D327CFF-291D-4AC1-89F4-24A689303475@gromit.dlib.vt.edu> <4C1E65A0.9030800@freebsd.org> To: freebsd-ppc@freebsd.org X-Mailer: Apple Mail (2.1081) X-Mirapoint-Received-SPF: 198.82.161.152 auth3.smtp.vt.edu paul@gromit.dlib.vt.edu 5 none X-Mirapoint-IP-Reputation: reputation=neutral-1, source=Fixed, refid=n/a, actions=MAILHURDLE SPF TAG X-Junkmail-Status: score=10/50, host=zidane.cc.vt.edu X-Junkmail-SD-Raw: score=unknown, refid=str=0001.0A02020A.4C1E7630.003D,ss=1,fgs=0, ip=98.249.7.145, so=2009-09-22 00:05:22, dmn=2009-09-10 00:05:08, mode=single engine X-Junkmail-IWF: false Subject: Re: 8.1-RC1 fails to boot on iBook G4 X-BeenThere: freebsd-ppc@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the PowerPC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 20 Jun 2010 20:13:03 -0000 On Jun 20, 2010, at 3:01 PM, Nathan Whitehorn wrote: > On 06/19/10 10:29, Paul Mather wrote: >> On Jun 17, 2010, at 9:38 AM, Nathan Whitehorn wrote: >>=20 >> =20 >>> On 06/16/10 21:13, Paul Mather wrote: >>> =20 >>>> I just tried to book the 8.1-RC1 disc1 ISO on an iBook G4 but it = failed to boot into FreeBSD. I was left at the Open Firmware prompt. = Is FreeBSD known not to work on an iBook G4? I was able to boot = successfully into the FreeBSD installer using this same disc on a = PowerBook G4. >>>>=20 >>>> =20 >>> That should work perfectly fine. I have a G4 iBook of the same model = running FreeBSD. >>>=20 >>> =20 >>>> Decrementer exception at %SRR0: 00100100 %SRR1: 10003030 >>>>=20 >>>> =20 >>> This is a very rare race during early initialization that happens on = some machines and that no one has been able to track down. A timer seems = to have gone off in the middle of the OF->kernel transition. It's = possible that if you wait a different amount of time at the boot prompt = it won't happen. >>> =20 >> I tried waiting a different amount of time during a couple of boot = attempts, but it made no difference. Some of the times I waited until = different points during the countdown to boot before pressing the return = key, and at least once I pressed space to go to the boot prompt and let = it sit there for a while before issuing "boot." Every time, it failed = to boot FreeBSD. >>=20 >> Almost always, I get the "Decrementer exception" error above, but = once I got something akin to a "Memory access error" reported, with the = same %SRR0 and %SRR1 values. I even reset the iBook's PRAM via = Command-Option-P-R, but to no avail. >> =20 > That's very strange -- 0x00100100 is the very first instruction in the = kernel, so it hasn't even had a chance to run yet. Maybe there is a = hardware problem with your CD drive? Can you check that the MD5 of the = disc matches the one on the FTP site when read from your iBook? The exact same disc will boot without issues on a PowerBook G4, so I = suspect the disc itself is okay. Today, I downloaded and burned the NetBSD/macppc 5.0.2 install ISO. I = was able to boot successfully into the NetBSD installer from Open = Firmware using that disc. So, I guess the CD hardware is probably okay, = and whatever the NetBSD boot loader is doing, it is able successfully to = boot on this iBook G4 whereas the FreeBSD one can't. Cheers, Paul.