How transfer linux kernel and u-boot from toradex Carrier Bord to user board

What I need to do for transfer linux kernel and u-boot from toradex Carrier Bord to user board?
Need I change u-boot source?

If you are referring to updating the image on module over Ethernet, please refer the following article.

No, I referring if I wont use not Viola Carrier Board with Colibri VF50 but my own main board.

This depends heavily on your carrier board. If your carrier board uses all pins according to the Colibri standard, you don’t need to change the software side. However, if you make use of muxed functionality, you might need to alter the Linux sources (often altering the device tree is ok) or/and U-Boot.

Сlear. Thank you.