From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964925AbVHOUIU (ORCPT ); Mon, 15 Aug 2005 16:08:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964924AbVHOUIU (ORCPT ); Mon, 15 Aug 2005 16:08:20 -0400 Received: from postfix3-1.free.fr ([213.228.0.44]:37052 "EHLO postfix3-1.free.fr") by vger.kernel.org with ESMTP id S964927AbVHOUIT (ORCPT ); Mon, 15 Aug 2005 16:08:19 -0400 Message-ID: <1124136498.4300f6321bb1b@imp5-q.free.fr> Date: Mon, 15 Aug 2005 22:08:18 +0200 From: mustang4@free.fr To: Willy Tarreau Cc: linux-kernel@vger.kernel.org Subject: Re: Linux Kernel Hang or stop after uncompressing MPC8245 References: <1124122213.4300be659dc89@imp5-q.free.fr> <20050815155505.GF20363@alpha.home.local> <1124125002.4300c94a31810@imp5-q.free.fr> <20050815165141.GA29660@alpha.home.local> In-Reply-To: <20050815165141.GA29660@alpha.home.local> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT User-Agent: Internet Messaging Program (IMP) 3.2.5 X-Originating-IP: 57.250.252.246 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Thanks Willy, So i just compile a new Kernel with options we have talking about... And it's freeze, nothing to the console... So i need to find the way to enable the Level-Triggered Interrupts in the kernel to the right IRQ address... I read the thread... but i can't find the thing to change in kernel source or kernel configuration. Or perhaps i enable to many option in "Device Drivers --->" "Character devices-->" "Serial drivers --->" <*> 8250/16550 and compatible serial support x x x x [*] Console on 8250/16550 and compatible serial port x x x x (4) Maximum number of non-legacy 8250/16550 serial ports x x x x [*] Extended 8250/16550 serial driver options x x x x [*] Support more than 4 legacy serial ports x x x x [*] Support for sharing serial interrupts x x x x [ ] Autodetect IRQ on standard ports (unsafe) x x x x [*] Support special multiport boards x x x x [*] Support RSA serial ports Try autodetect IRQ ? I'll try to learn more about edge/level irq sharing... Yann > Hi, > > On Mon, Aug 15, 2005 at 06:56:42PM +0200, mustang4@free.fr wrote: > > Hi, > > > This is what my board say (in console mode) about serial address: > > 0x08 COM1 DUART8245 0xfc004500 0x07a12000 0x00000001 > 0x01effc70 > > 0x09 COM2 DUART8245 0xfc004600 0x07a12000 0x00000001 > 0x01e107d0 > > Have you read this thread ? > > http://ozlabs.org/pipermail/linuxppc-embedded/2005-August/019482.html > > It discusses your about your board, on which interrupts must be set to LEVEL > and not EDGE. BTW, they also used 8250. I don't know how you have to > configure > the serial ports though. > > This boot log also confirms that you have to use 8250/16550 : > > http://mhonarc.axis.se/jffs-dev/msg01350.html > > > > - are you sure that you enabled "console on serial port" in the config > ? > > Yes, i enable " Support for console on virtual terminal" but i enable > > "Non-standard serial port support" option too... > > So i recompile without the last one... and i recompile "with Serial drivers > > --->" "[*] Console on 8250/16550 and compatible serial port" perhaps it's > > that... And i came back to you. > > But, perhaps i've allready tested... i ll check.. it's not a default option > ? > > It's not necessarily a default option. There are many console and serial > ports combination available. BTW, you could also try netconsole which will > send you the console data over an ethernet port if you cannot get the serial > to work. > > > > - how can you be certain that the serial will appear on ttyS0 and not > ttyS1 > > > or another one (the kernel might detect another serial port which it > > > assigns ttyS0) > > I pass parameter directly to the kernel; > > ok. > > > Another option i set : > > Default bootloader kernel arguments x x x x(console=ttyS0,9600 > console=tty0 > > ok. > > Regards, > Willy > >