From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from wx-out-0506.google.com (wx-out-0506.google.com [66.249.82.238]) by ozlabs.org (Postfix) with ESMTP id 8CA5067B77 for ; Fri, 20 Oct 2006 13:58:34 +1000 (EST) Received: by wx-out-0506.google.com with SMTP id h31so792868wxd for ; Thu, 19 Oct 2006 20:58:33 -0700 (PDT) Message-ID: Date: Thu, 19 Oct 2006 23:58:33 -0400 From: "Lei Sun" To: linuxppc-embedded@ozlabs.org Subject: u-boot question MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hi all: Is this the right list to ask for U-BOOT related question? If it's not, please igore it and direct me to the right list. I am trying to bring up a custom designed board based on MPC8270, after spent 3 weeks on fixing hardware issues (extreme surgery !) , I finally be able to read something out of the flash and verified SDRAM is working as well. Up to this point our JTAG debugger is dead! I burned u-boot Image using a programmer and put it in. after power up and did a PORESET, I found out that every 20 seconds or so , system generated HRESET,( by measuring the HRESET pin of the JTAG port). It does read Hardware Reset Config Word when reset happens (I saw pulse on the CS0 pin). Before the JTAG die, i was able to issue "reset" command through it and found out the PC stays at 0x100, but issue "go" command , the PC became 0x000000fc and hangs. My questions are : 1. What's the best way to verify that CPU read correct HRCW ? 2. Any good JTAG debugger for this family of CPU you can recommend ? We bought Gaurdian-SE from etoolsmith (the company no longer exsit!) which really sucks! Thanks! lei