Exciting times are ahead for Tizen as we see it being run on SO MANY different development boards. Here is a Demonstration on how to boot Tizen Common on the open source hardware development board Radxa Rock (with Rockchip RK3188 ARM SoC), booting from a MicroSD card.
Radxa Rock: http://radxa.com
Porting Tizen:Common to Radxa Rock: https://www.anavi.org/article/168/
Thanks to Leon for the Information.