RK3399 U-BOOT Uploading

I compiled U-boot in android SDK 7.1.2 (https://drive.google.com/drive/folders/1QRedwXTH_wt_dPV0jFyyyyfptwra6VfI)

and file created u-boot.img, trust.img,rk3399_loader_v1.09.109.bin.

trust.img, rk3399_loader_v1.09.109.bin is no problemuploading, but u-boot.img is not uploading.

“No found offset of U-Bootpartition, Download failed” error message occured.

How can i clear this error? There are seems to exist compile environment, but it’s hardto find the solution. help us.

solved: Parameter file needed.