From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from moutvdomng.kundenserver.de (moutvdom.kundenserver.de [212.227.126.249]) by ozlabs.org (Postfix) with ESMTP id CFF0D68734 for ; Sat, 19 Nov 2005 05:44:21 +1100 (EST) Message-ID: <437E20FF.8060709@anagramm.de> Date: Fri, 18 Nov 2005 19:44:15 +0100 From: Clemens Koller MIME-Version: 1.0 To: zjznliang References: <20051118024803.E2988687A1@ozlabs.org> In-Reply-To: <20051118024803.E2988687A1@ozlabs.org> Content-Type: text/plain; charset=GB2312 Cc: linuxppc-embedded Subject: Re: Help ! 2.6.14 kernel can't bring up List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hello, zjznliang! zjznliang wrote: > Hi linuxppc-embeddedŁĄ > > Hi , How to config the "early printk" in 2.6.14 linux configration??? Well... check the .config or the kernel sources for CONFIG_EARLY_PRINTK or CONFIG_WANT_EARLY_SERIAL Have a look at the bootup code of your board, where it's used. I would call the printk as soon as the serial ports are initialized. If that's too late, try to toggle some pin as early as possible. If that doesn't work, and if you have no more ideas of what to do, you might think about getting some hardware debugging tools. Best greets, -- Clemens Koller _______________________________ R&D Imaging Devices Anagramm GmbH Rupert-Mayer-Str. 45/1 81379 Muenchen Germany http://www.anagramm.de Phone: +49-89-741518-50 Fax: +49-89-741518-19