From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Sun, 24 Jun 2012 14:22:25 +0200 (CEST) Received: from elvis.franken.de ([193.175.24.41]:60499 "EHLO elvis.franken.de" rhost-flags-OK-OK-OK-OK) by eddie.linux-mips.org with ESMTP id S1901351Ab2FXMWU (ORCPT ); Sun, 24 Jun 2012 14:22:20 +0200 Received: from uucp (helo=solo.franken.de) by elvis.franken.de with local-bsmtp (Exim 3.36 #1) id 1SilpW-0003O4-00; Sun, 24 Jun 2012 14:22:14 +0200 Received: by solo.franken.de (Postfix, from userid 1000) id 24FAB1BB7B1; Sun, 24 Jun 2012 14:18:02 +0200 (CEST) Date: Sun, 24 Jun 2012 14:18:02 +0200 From: Thomas Bogendoerfer To: Joshua Kinard Cc: linux-mips@linux-mips.org Subject: Re: booting linux-3.3 or linux 3.4 on an SGI O2? Message-ID: <20120624121802.GA27839@alpha.franken.de> References: <20120605190047.GA6263@alumni-linux.ccs.neu.edu> <4FCE593B.10808@cavium.com> <4FE6195F.7030505@gentoo.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4FE6195F.7030505@gentoo.org> User-Agent: Mutt/1.5.20 (2009-06-14) X-archive-position: 33798 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: tsbogend@alpha.franken.de Precedence: bulk List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-Id: linux-mips X-List-ID: linux-mips List-subscribe: List-owner: List-post: List-archive: X-list: linux-mips Return-Path: On Sat, Jun 23, 2012 at 03:30:39PM -0400, Joshua Kinard wrote: > On 06/05/2012 3:08 PM, David Daney wrote: > > On 06/05/2012 12:00 PM, Jim Faulkner wrote: > >> Hi all, I haven't been able to boot any kernels after linux 3.2 on my > >> SGI O2. I've tried linux-3.3.5 and linux-3.4.0, but neither would boot. > >> Unfortunately I don't have further information such as a kernel panic, > >> since I don't get any video output after the kernel is loaded. I've > >> attached my linux-3.4 .config. Anybody know what patches I might need > >> to get the latest kernels booting on this system? > >> > > > > I have had problems as well. > > > > Someone should configure a serial console and early printk to see if they > > can see what is happening. > > Early printk on O2 systems probably has the same issues as on IP22/IP28 > where it's overwriting PROM memory somewhere. The system will hang very > early in the bootmem allocator if you kludge early printk to work on these > systems: O2 is easy since it's simply a 16550 as console port chip, so no PROM is needed and no problems like on IP22/28. > CPU revision is: 00002733 (RM7000) I guess the problem is here, iirc there was another RM7000 error report due to some cache code restructering or it's RM7000 O2 problem in general. I don't own a RM7000 cpu module for O2 ... On my R5k O2 3.4.3 runs without problems like early 3.5 did: mips:~# uname -a Linux mips.franken.de 3.4.3 #2 Sun Jun 24 14:12:05 CEST 2012 mips64 GNU/Linux mips:~# cat /proc/cpuinfo system type : SGI O2 processor : 0 cpu model : R5000 V2.1 FPU V1.0 BogoMIPS : 179.45 Thomas. -- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ]