[yocto] meta-cedartrail - serial console

[Bodke, Kishore K]

>-----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.

I edited grub and added back console=ttyS0,115200 console=tty0
Serial console got active, but I could not get the login prompt on serial console, only boot messages and serial console hangs after these messages.

EXT3-fs (loop0): recovery complete
EXT3-fs (loop0): mounted filesystem with ordered data mode
udev[469]: starting version 164
NET: Registered protocol family 10
ADDRCONF(NETDEV_UP): eth0: link is not ready
ip_tables: (C) 2000-2006 Netfilter Core Team
nf_conntrack version 0.5.0 (16384 buckets, 65536 max)


Gfx desktop came up though with no issues.

Thanks
Kishore.

>
>--
>Darren
>
>> Jim A
>>>> 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.
>>>>
>>>> Jim A
>>>>
>>>> _______________________________________________
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>>>> yocto at yoctoproject.org
>>>> https://lists.yoctoproject.org/listinfo/yocto
>>
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>
>--
>Darren Hart
>Intel Open Source Technology Center
>Yocto Project - Linux Kernel