How to enable USB Kitl for friendlyArm

Tunahan
Hi all, 

i have got a friendlyArm device. I can make run time image and send nand
flash of device and then boot from nand. But i want to debug with
breakpoint via usb kitl. İs it possible? 

i debuged with ethernet kitl other devices but I think my devices' bsp not
supported eboot(ethernet boot) for reason, i must debug via usb kitl. 

thank for help.