[yocto] meta-cedartrail - serial console

[Darren Hart]

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.

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