1.build nand
make p=sun50iw3p1 m=nand
make boot0

2.build mmc
make p=sun50iw3p1 m=mmc
make boot0

3.build spinor
make p=sun50iw3p1 m=spinor
make boot0

3.build fes
make p=sun50iw3p1 m=fes
make fes

4.build sboot
make p=sun50iw3p1 m=sboot
make sboot

5.show degbug message
make boot0|sboot|fes  V=1