[yocto] meta-cedartrail - serial console

[jfabernathy]

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 at ubuntu-x64:~/poky/build$ bitbake core-image-minimal -e | grep 
SERIAL_CONSOLE=

# SERIAL_CONSOLE=115200 ttyS0
SERIAL_CONSOLE="115200 ttyS0"
jim at ubuntu-x64:~/poky/build$

So is the bitbake command showing the results before the cedartrail.conf 
options take affect??

Jim A