@popop51 - documentation on how to port your device is at http://docs.halium.org/en/latest/porting/first-steps.html
and
http://docs.ubports.com/en/latest/porting/Intro.html
Also http://docs.ubports.com/en/latest/porting/halium_9/Halium_9_GSI_porting.html

Best regards,
Steve Berson