From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from nf-out-0910.google.com (nf-out-0910.google.com [64.233.182.189]) by ozlabs.org (Postfix) with ESMTP id 90D7BDDE17 for ; Wed, 14 Mar 2007 11:28:03 +1100 (EST) Received: by nf-out-0910.google.com with SMTP id m18so2521937nfc for ; Tue, 13 Mar 2007 17:28:02 -0700 (PDT) Message-ID: Date: Tue, 13 Mar 2007 12:02:20 -0700 From: "Ed Swierk" Sender: eswierk@gmail.com To: linuxppc-embedded@ozlabs.org Subject: Re: Serial console not working on EP8343M In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed References: <8BE4BF8E-A32E-4984-9B1B-C3B6ED2A1BCA@kernel.crashing.org> List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , OK, problem solved. Once I kicked out that nasty IPMI driver, everything works, including the serial console without udbg-immortal. Lessons learned: - passing "udbg-immortal loglevel=9 initcall_debug" to the kernel will give you much more visibility into early init problems (at least on powerpc arch circa 2.6.20) - building U-Boot 1.2.0 with DEBUG defined in ft_build.c helps in troubleshooting flat device tree problems - the Abatron BDI2000 is an incredibly useful tool: source-level debugging of U-Boot and the Linux kernel, starting at instruction zero *swoon* --Ed