Uefi Rockchip Rk3399Pkg

$ git clone https://github.com/tianocore/edk2.git  
...  
$ git clone https://github.com/tianocore/edk2-platforms.git
...  
$ git clone https://github.com/tianocore/edk2-non-osi.git  
...  
$ git clone this Repositories to edk2-platforms/Platform/  

build -a AARCH64 -t GCC48 -p OpenPlatformPkg/Platforms/Rockchip/Rk3399Pkg/Rk3399-SDK.dsc -b DEBUG

Rockchip/Rk3399Pkg/Tools/loaderimage --pack --uboot file_in file_out
file_in: Build/Rk3399-SDK/DEBUG_GCC48/FV/RK3399_SDK_UEFI.fd
file_out: the name of generated firmware

After Pack firmware,use RK AndroidTool to download firmware,file_out instead of uboot.img.
Need pick Loader,Parameter,U-boot(uefi firmware),Trust in the RK AndroidTool.