[yocto] meta-cedartrail - serial console

[Darren Hart]

On 06/01/2012 02:02 PM, Bodke, Kishore K wrote:
> 
> 
>> -----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.
> 

Meaning you do not have to modify ia32-base.inc?

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

Added what back in grub.cfg?

I thought you were disabling the serial port...

Where does the serial console hang? In grub? During boot? At the login
prompt?



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