On 05/31/2012 11:54 AM, jfabernathy wrote: > 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@ubuntu-x64:~/poky/build$ bitbake core-image-minimal -e | grep > SERIAL_CONSOLE= > > # SERIAL_CONSOLE=115200 ttyS0 > SERIAL_CONSOLE="115200 ttyS0" > jim@ubuntu-x64:~/poky/build$ > > So is the bitbake command showing the results before the cedartrail.conf > options take affect??
variable assignments can be tricky, and are not the easiest things to track down. I suggest looking through your configured layers and looking for all the SERIAL_CONSOLE assignments using ttyS3 and ttyS0 and see if you can determine what is overriding your cedartrail.conf setting. -- Darren Hart Intel Open Source Technology Center Yocto Project - Linux Kernel _______________________________________________ yocto mailing list yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/yocto