http://www.bunniestudios.com/blog/?p=2686
"Items marked with an asterisk (*) require a closed-source firmware blob, but the system is functional and bootable without the blob. "
"Freescale iMX6 CPU : Vivante GC2000 OpenGL ES2.0 GPU, 200Mtri/s, 1Gpix/s (*)" "Internal ports & sensors: header for optional AW-NU137 wifi module (*)"This might be interesting but alas it does not seems to be completely freedom friendly.
