From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id 70AFDE00747 for ; Fri, 1 Jun 2012 13:03:43 -0700 (PDT) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga101.fm.intel.com with ESMTP; 01 Jun 2012 13:03:43 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.71,315,1320652800"; d="scan'208";a="159669248" Received: from unknown (HELO envy.home) ([10.255.12.201]) by fmsmga001.fm.intel.com with ESMTP; 01 Jun 2012 13:03:42 -0700 Message-ID: <4FC91FE0.9040909@linux.intel.com> Date: Fri, 01 Jun 2012 13:02:40 -0700 From: Darren Hart User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:12.0) Gecko/20120430 Thunderbird/12.0.1 MIME-Version: 1.0 To: jfabernathy References: <4FC79837.2070309@gmail.com> <4FC7B4E3.1010401@linux.intel.com> <4FC7BE80.4060700@gmail.com> <4FC7C965.1020809@linux.intel.com> <4FC8E39D.3010702@gmail.com> <4FC8F564.90704@linux.intel.com> <4FC8FE53.4030508@gmail.com> <4FC8FF90.20403@linux.intel.com> <4FC90183.2080107@gmail.com> <4FC9021D.1050706@linux.intel.com> <4FC91488.9080106@gmail.com> In-Reply-To: <4FC91488.9080106@gmail.com> X-Enigmail-Version: 1.4.1 Cc: "yocto@yoctoproject.org" Subject: Re: meta-cedartrail - serial console X-BeenThere: yocto@yoctoproject.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Discussion of all things Yocto List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 Jun 2012 20:03:43 -0000 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit On 06/01/2012 12:14 PM, jfabernathy wrote: > On 06/01/2012 01:55 PM, Darren Hart wrote: >> >> On 06/01/2012 10:53 AM, jfabernathy wrote: >>> On 06/01/2012 01:44 PM, Darren Hart wrote: >>>> On 06/01/2012 10:39 AM, jfabernathy wrote: >>>>> On 06/01/2012 01:01 PM, Darren Hart wrote: >>>>>> On 06/01/2012 08:45 AM, jfabernathy wrote: >>>>>>> On 05/31/2012 03:41 PM, Darren Hart wrote: >>>>>>>> On 05/31/2012 11:54 AM, jfabernathy wrote: >>>>>>>>> On 05/31/2012 02:13 PM, Darren Hart wrote: >>>>>>>>>> On 05/31/2012 09:11 AM, jfabernathy wrote: >>>>>>>>>>> Using a DN2800MT (Marshalltown) Intel board, I'm testing the >>>>>>>>>>> meta-cedartrail using edison branch and noticed an issues with the >>>>>>>>>>> serial console. >>>>>>>>>>> >>>>>>>>>>> The cedartrail.conf in the machine directory has the following statements: >>>>>>>>>>> >>>>>>>>>>> SYSLINUX_OPTS = "serial 0 115200" >>>>>>>>>>> SERIAL_CONSOLE = "115200 ttyS0" >>>>>>>>>>> APPEND += "console=ttyS0,115200 console=tty0" >>>>>>>>>>> >>>>>>>>>>> However, when the image booted, I had no serial console on ttyS0. I >>>>>>>>>>> checked /etc/inittab and noticed that the following line existed: >>>>>>>>>>> >>>>>>>>>>> S:2345:respawn:/sbin/getty 115200 ttyS3 >>>>>>>>>>> >>>>>>>>>>> I changed the ttyS3 to ttyS0 and then I have a serial console on the >>>>>>>>>>> next reboot. So it appears the override in the .conf file is not >>>>>>>>>>> working. Also I only have the console from getty, and not the kernel >>>>>>>>>>> logging console. >>>>>>>>>>> >>>>>>>>>>> Anyone have a solution?? >>>>>>>>>>> >>>>>>>>>>> If this is considered a bug I can put it on bugzilla. >>>>>>>>>> Lets make sure your environment is what we expect. Please provide the >>>>>>>>>> output of: >>>>>>>>>> >>>>>>>>>> $ bitbake core-image-minimal -e | grep SERIAL_CONSOLE= >>>>>>>>>> >>>>>>>>>> If it is not "115200 ttyS0" then it is getting overwritten somewhere >>>>>>>>>> either in your config, or possibly by an inappropriate selection of an >>>>>>>>>> assignment operator (=, ?=, etc.) in edison. >>>>>>>>> okay now I'm confused. while the cedartrail.conf file has the following: >>>>>>>>> SYSLINUX_OPTS = "serial 3 115200" >>>>>>>>> SERIAL_CONSOLE = "115200 ttyS3" >>>>>>>>> APPEND += "console=ttyS3,115200 console=tty3" >>>>>>>>> >>>>>>>>> >>>>>>>>> The output of the bitbake command you suggested above gives: >>>>>>>>> jim@ubuntu-x64:~/poky/build$ bitbake core-image-minimal -e | grep >>>>>>>>> SERIAL_CONSOLE= >>>>>>>>> >>>>>>>>> # SERIAL_CONSOLE=115200 ttyS0 >>>>>>>>> SERIAL_CONSOLE="115200 ttyS0" >>>>>>>>> jim@ubuntu-x64:~/poky/build$ >>>>>>>>> >>>>>>>>> So is the bitbake command showing the results before the cedartrail.conf >>>>>>>>> options take affect?? >>>>>>>> variable assignments can be tricky, and are not the easiest things to >>>>>>>> track down. I suggest looking through your configured layers and looking >>>>>>>> for all the SERIAL_CONSOLE assignments using ttyS3 and ttyS0 and see if >>>>>>>> you can determine what is overriding your cedartrail.conf setting. >>>>>>>> >>>>>>> What I found out is the only variable that matters for login console in >>>>>>> my situation is SERIAL_CONSOLE because I have to use grub and the boot >>>>>>> from hard drive method because my image can't be put on a USB Flash for >>>>>>> some reason. So I manually have to edit the grub.cfg file as documented >>>>>>> on the wiki "How Do I" section of putting Yocto on a hard drive. Adding >>>>>>> console=ttyS0,115200 on the linux statement takes care of the boot console. >>>>>> I believe this is a manual process currently. Please open an enhancement >>>>>> in bugzilla for your specific situation and I'll incporporate into the >>>>>> larger boot process and image revamp we're doing for 1.3. >>>>>> >>>>> I'll make the entry. >>>>>>> So the question is has there been any thought about automating the >>>>>>> choice of boot loader and the parameters that are needed or optional? >>>>>>> In the case of meta-cedartrail, the cedartrail.conf assumes syslinux is >>>>>>> the boot loader. When I could use a USB Flash key, creating a boot >>>>>>> device was a trivial dd statement. Because I have to use a hard drive >>>>>>> now, I have to do a number of manual steps. Or is there a way to create >>>>>>> a boot-able hard drive with syslinux so the cedartrail.conf parameters >>>>>>> are all that is needed to adjust? >>>>>> This is all good feedback to consider as we work through making more >>>>>> universally bootable images. This is becoming a hot topic as people are >>>>>> using Yocto in more and more situations and as things like EFI become >>>>>> more commonplace. >>>>>> >>>>>> There is no reason you can't just dd (have a look at >>>>>> scripts/contrib/ddimage) the image to a hard disk instead of a usb >>>>>> stick. You may need a USB to SATA adapter for your host (this is what I >>>>>> use). If you have a USB port, you could just use the install option. >>>>> This script does not eliminate the boot error I get with syslinux on USB >>>>> flash keys. I noticed the script is not in edison but is in denzil, so >>>>> I got it there and tried to run it against an image created with >>>>> edison. I still get the same boot error I get with dd, which is >>>>> understandable since that's what the script uses. Not sure if this is a >>>>> size issue because my image is over a 1GB. I'm guessing this this will >>>>> still fail on a hard drive with the dd'ing of the .hddimg, but I'll test >>>>> it anyway. >>>> Sorry, ddimage wasn't meant to fix the issue, just as a slightly more >>>> convenient/safe wrapper around dd. >>>> >>>> I'm not familiar with the error you are seeing with the live image. Can >>>> you point me to the thread or the bug? >>> Well this boot error issue seems to be USB Key related because I just >>> did the ddimage script on a edison core-image-sato image using the >>> .hddimg file and it worked correctly on a hard drive. This was a 1.2GB >>> image. Now I'll have to add in the parameters that give you more free >>> disk space now that I'm testing with a real hard drive. >>> >>> The readme in most of the x86 BSP directory in meta-intel talk about if >>> you get boot errors to: >>> >>> dd if=/dev/zero of=/dev/sdf bs=1M count=512 >>> >>> I have not found this to work. Maybe it's a count size issue. I always >>> use 512, but maybe it should be 4096 for a 4GB USB key. >>> >> What is the boot error? >> > SYSLINUX 4.03 2010-10-22 CHS Load error- Boot error > > Jim A OK, I suggest following the instructions for creating a USBZIP format in README.hardware. If that fails, this merits a bug. Regardless, as rework the images for 1.3, we should be able to avoid the many many boot errors like this that people have been reporting and we've been working around. -- Darren Hart Intel Open Source Technology Center Yocto Project - Linux Kernel