From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bobek.mail-atlas.net (bobek.mail-atlas.net [212.47.13.89]) by ozlabs.org (Postfix) with ESMTP id D2E5567A3D for ; Tue, 23 May 2006 01:11:45 +1000 (EST) Received: from bobek ([127.0.0.1]) by bobek.mail-atlas.net for linuxppc-embedded@ozlabs.org; Mon, 22 May 2006 17:10:59 +0200 From: "=?us-ascii?B?TGFkaXNsYXYgS2xlbm92aT8=?=" To: linuxppc-embedded@ozlabs.org Message-ID: <68fe5e37fc274a4daa3197e0590006ca@pobox.sk> Date: Mon, 22 May 2006 17:10:59 +0200 Subject: Re: Re: SCC1 as serial console MIME-Version: 1.0 Content-type: text/plain; charset=us-ascii List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , >-----P?vodn? spr?va----- >Od: Laurent Pinchart [mailto:laurent=2Epinchart@tbox=2Ebiz] >Odoslan?: 22=2E m?ja 2006 14:12 >Komu: linuxppc-embedded@ozlabs=2Eorg >Predmet: Re: SCC1 as serial console > > >Hi Ladislav, > >> can anybody help me to setup the SCC1 port as serial console on MPC8= 60 with >> kernel 2=2E6=2E15=2E4? I would like to use it as system console duri= ng the >> booting proccess=2E I can not get any output on serial console durin= g booting >> proccess, I use uboot=2E > >Does SCC1 work correctly in U-Boot ? If not, you should fix that first= =2E I'll >assume it does=2E Yes, it works fine for kernel 2=2E4=2E22=2E >There are many issues which could lead to a silent serial console=2E T= he serial >port could be misconfigured, or the kernel could crash for another rea= son >before the serial port is initialized=2E I did a little experiment, I turn off the root file system so my kernel= (system,=2E=2E) restart=20 after 180 seconds=2E When there was something wrong the there wasn't s= ystem restart=2E But, ofcourse I CAN NOT be sure that this selince is due an another err= or or I just can=20 not see the output=2E >Have you been able to get a serial console on another serial port (SMC= ) ? Are >the clock frequencies computed by U-Boot and passed to the Linux kerne= l >correct ? Please can you explain how to get thi serial to SMC? > >Do you have a hardware debugger (BDI2000) that you can connect to the >processor to see if Linux crashes before initializing the serial port = ? If >not, you will probably have to take a try at led-debugging (make some = leds >blink at various point in the Linux kernel to try to find out what hap= pens), >but that's really no fun=2E > No I don't have any :( Ladislav Klenovic_______________________________________________ >Linuxppc-embedded mailing list >Linuxppc-embedded@ozlabs=2Eorg >https://ozlabs=2Eorg/mailman/listinfo/linuxppc-embedded