From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-out.m-online.net (mail-out.m-online.net [212.18.0.10]) by ozlabs.org (Postfix) with ESMTP id D14511007D2 for ; Wed, 2 Dec 2009 10:10:25 +1100 (EST) To: Allan Wang From: Wolfgang Denk Subject: Re: EP440XS board boot problem(Note:similart to Sequoia) MIME-Version: 1.0 Content-type: text/plain; charset=ISO-8859-1 In-reply-to: <401793.31718.qm@web52903.mail.re2.yahoo.com> References: <401793.31718.qm@web52903.mail.re2.yahoo.com> Date: Wed, 02 Dec 2009 00:10:22 +0100 Message-Id: <20091201231022.AB72CE6D391@gemini.denx.de> Cc: linuxppc-dev@lists.ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Dear Allan Wang, In message <401793.31718.qm@web52903.mail.re2.yahoo.com> you wrote: > > I am new to the list. I am still newbie to embedded linux. I have > bought an ep440xs board which is similar to sequoia board. u-boot is > working. I am trying to make it run linux. I have the following > problems and need your help. Thank you very much: Which exact version of U-Boot are you running on this board? I guess this is a out-of-tree port, i. e. not part of the mainline U-Boot repository - so are you sure that device tree support is enabled in your version of U-Boot? > > I am using linux kernel 2.6.30.4. I encounter 2 problems: > 1. After console_init() is called inside start_kernel(), the console starts printing garbage like: > Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled > serial8250.0: ttyS0 at MMIO 0x1ef600300 (irq = 16) is a 16550A > ������������������������������ ... What is your exact boot command? Which boot arguments do you pass to the kernel? What is ytour console baud rate in U-Boot, and what sort of "console=" boot argument do you pass to the Linux kernel? What does your device tree look like? > 2. It pakics when mounting the root file system(NFS): > (gdb) bt > #0 panic (fmt=0xc0290e94 "VFS: Unable to mount root fs on %s") So what is the "%s" argument here? Which sort of root file system are you trying to mount - NFS, ramdisk, UBIFS, ... ? Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de "He only drinks when he gets depressed." "Why does he get depressed?" "Sometimes it's because he hasn't had a drink." - Terry Pratchett, _Men at Arms_