[yocto] meta-cedartrail - serial console

[Bodke, Kishore K]

>-----Original Message-----
>From: Hart, Darren
>Sent: Friday, June 01, 2012 11:12 AM
>To: Bodke, Kishore K
>Cc: jfabernathy; yocto at yoctoproject.org
>Subject: Re: [yocto] meta-cedartrail - serial console
>
>On 06/01/2012 11:03 AM, Bodke, Kishore K wrote:
>>
>>
>>> -----Original Message-----
>>> From: Hart, Darren
>>> Sent: Thursday, May 31, 2012 12:43 PM
>>> To: jfabernathy
>>> Cc: Bodke, Kishore K; yocto at yoctoproject.org
>>> Subject: Re: [yocto] meta-cedartrail - serial console
>>>
>>> On 05/31/2012 12:32 PM, jfabernathy wrote:
>>>> On 05/31/2012 02:18 PM, Bodke, Kishore K wrote:
>>>>>
>>>>>> -----Original Message-----
>>>>>> From: yocto-bounces at yoctoproject.org [mailto:yocto-
>>>>>> bounces at yoctoproject.org] On Behalf Of jfabernathy
>>>>>> Sent: Thursday, May 31, 2012 9:12 AM
>>>>>> To: yocto at yoctoproject.org
>>>>>> Subject: [yocto] meta-cedartrail - serial console
>>>>>>
>>>>>> 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"
>>>>>>
>>>>> I just saw that Edison branch has ttyS3 enabled.
>>>>>
>>>>> SYSLINUX_OPTS = "serial 3 115200"
>>>>> SERIAL_CONSOLE = "115200 ttyS3"
>>>>> APPEND += "console=ttyS3,115200 console=tty3"
>>>>>
>>>>> Are you looking into right branch?
>>>>>
>>>>> Thanks
>>>>> -Kishore.
>>>>>
>>>>
>>>> So how do you get changes in the cedartrail.conf file to take affect??
>>>> I edited the file and did the bitbake again, but nothing changed.  I'm
>>>> guessing I need a bitbake -c cleansstate "somthing"  But I don't know
>>>> what to put there to make rebuild with ttyS0.
>>>>
>>>
>>> Ah yes, this rebuild is a bit frustrating. I believe it is the
>>> task_core* tasks you need to rebuild. bitbake -u depexp -g
>>> core-image-base (whatever your image is) will allow you to view which
>>> task_ tasks it is building, try cleansstate'ing those and rebuilding the
>>> image.
>>
>> I had to remove the above 3 lines from cedartrail.conf and
>> SERIAL_CONSOLE ?= "115200 ttyS0" line from conf/machine/include/ia32-
>base.inc
>> rebuild the image.
>> It is disabled now.
>
>Did you try with SERIAL_CONSOLE="" in cedartrail.conf ?

Yes. I tried this.  It is disabled.

I again added back in the grub.cfg, serial console hangs.

Thanks
Kishore.


>
>
>--
>Darren Hart
>Intel Open Source Technology Center
>Yocto Project - Linux Kernel