From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753523Ab0CQMnA (ORCPT ); Wed, 17 Mar 2010 08:43:00 -0400 Received: from mail-vw0-f46.google.com ([209.85.212.46]:46722 "EHLO mail-vw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752807Ab0CQMm7 (ORCPT ); Wed, 17 Mar 2010 08:42:59 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:subject :content-type:content-transfer-encoding; b=xv18lD+oCa1vLrpBiNdg4IUzctjOnZYqoiwKLf7QeXSidFniOFGEKfuy7ScE/axTvx Eo0l1ZlskL8zGmBPM02fwPfSYSQQDczzxax2cYJg4qVPZ7jkEA8Xl5r9p0euajQnVJZk x3immU99weMKJHQ48NKTenV/LvYJg54v00yOw= Message-ID: <4BA0CE4B.90508@gmail.com> Date: Wed, 17 Mar 2010 23:42:51 +1100 From: Graeme Russ User-Agent: Thunderbird 2.0.0.23 (X11/20090817) MIME-Version: 1.0 To: LKML Subject: x86 - Boot hangs at Calibrating delay loop on AMD SC520 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org I now have U-Boot booting 2.6.33 (abandoned 32-bit Boot Protocol and got a pseudo BIOS working) During boot I was getting a warning at arch/x86/kernel/rtc.c:125 and the kernel hung at Calibrating delay loop... Also, all boot messages have a zero time-stamp. I have tried a 2.4.37.9 kernel and get the same freeze calibrating the delay loop. I have tried with and without the AMD Elan Extended (non-PC) x86 platform I first assumed that the RTC is not working - I wasn't initially doing anything relating to the SC520 RTC in U-Boot. I have added initialisation code (as per the ÉlanTMSC520 Microcontroller User’s Manual Order #22004B) and confirmed that the RTC is working in the SC520. If traced back how the delay loop is performed and that has led me to arch/x86/lib/delay.c where I promptly got very lost. Any ideas?