From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Fri, 24 Mar 2006 10:48:58 +0000 (GMT) Received: from fri.itea.ntnu.no ([129.241.7.60]:22499 "EHLO fri.itea.ntnu.no") by ftp.linux-mips.org with ESMTP id S8133528AbWCXKss (ORCPT ); Fri, 24 Mar 2006 10:48:48 +0000 Received: from localhost (localhost [127.0.0.1]) by fri.itea.ntnu.no (Postfix) with ESMTP id 0AD2B83B2; Fri, 24 Mar 2006 11:58:46 +0100 (CET) Received: from invalid.ed.ntnu.no (invalid.ed.ntnu.no [129.241.205.150]) by fri.itea.ntnu.no (Postfix) with ESMTP; Fri, 24 Mar 2006 11:58:44 +0100 (CET) Received: from invalid.ed.ntnu.no (jonah@localhost.ed.ntnu.no [127.0.0.1]) by invalid.ed.ntnu.no (8.13.3/8.13.3) with ESMTP id k2OAwe2m015892 (version=TLSv1/SSLv3 cipher=DHE-DSS-AES256-SHA bits=256 verify=NO); Fri, 24 Mar 2006 11:58:40 +0100 (CET) (envelope-from jonah@omegav.ntnu.no) Received: from localhost (jonah@localhost) by invalid.ed.ntnu.no (8.13.3/8.13.3/Submit) with ESMTP id k2OAwZZS015889; Fri, 24 Mar 2006 11:58:40 +0100 (CET) (envelope-from jonah@omegav.ntnu.no) X-Authentication-Warning: invalid.ed.ntnu.no: jonah owned process doing -bs Date: Fri, 24 Mar 2006 11:58:35 +0100 (CET) From: Jon Anders Haugum X-X-Sender: jonah@invalid.ed.ntnu.no To: Mark Schank Cc: linux-mips@linux-mips.org Subject: Re: Alchemy Au1550 Early Console In-Reply-To: <5.1.0.14.2.20060322165104.02a32800@205.166.54.3> Message-ID: <20060324114653.S15728@invalid.ed.ntnu.no> References: <5.1.0.14.2.20060322165104.02a32800@205.166.54.3> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Content-Scanned: with sophos and spamassassin at mailgw.ntnu.no. Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 10923 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: jonah@omegav.ntnu.no Precedence: bulk X-list: linux-mips On Wed, 22 Mar 2006, Mark Schank wrote: > I am working with a Au1550 based system an am trying to upgrade > from the 2.6.12 kernel to the 2.6.16 kernel . I have noticed that the > au1x00_uart.c driver has been remove and replaced with functionality in > 8250.c and 8250_au1x00.c. So far, I have been unable to get the early > console running. Under this new driver model, what is the proper > way to bring up an early console on a Au1550 internal serial port? Have you enabled the console for 8250-based serial ports? (CONFIG_SERIAL_8250_CONSOLE) Another issue might be if you have got some PCI-based serial ports in the system, because they will be assigned before the internal ones. So you might end up having the console on a PCI serial port. Third: There is a bug in the new driver regarding divisor settings, but the console should still be working since the boot loader will init the uart properly. (I've posted a patch for this bug earlier: http://www.linux-mips.org/archives/linux-mips/2006-03/msg00041.html). Jon