This video shows UDOO booting Yocto Project.
As stated in main Yocto Project web site: "The Yocto Project is an open source collaboration project that provides templates, tools and methods to help you create custom Linux-based systems for embedded products regardless of the hardware architecture."
Our team has chosen to distribute Yocto file system with QT graphical interface to supply a concrete example of complete embedded system you can adopt in UDOO board.
http://kck.st/XBthCV
http://www.udoo.org
https://www.yoctoproject.org/