Dear IaMaPlAyEr,
In message 2ae8403e0908260106g38fe540eldeb0f8660526c415@mail.gmail.com you wrote:
I do like to ask a question, why u-boot have no upload command?
Because so far nobodyu needed it bad enough to went into the efforts of implementing it.
image such a scene: you have two board, and develop with one, but to some unknow reason, the board cannot boot.
Well, if it does not boot at all, it does not matter if the non-booting U-Boot image would contain an upload command or not.
maybe it is the hardware problem, you want to upload all the data---a bin file, and download it to another board.
maybe tftp should the upload function? or there is another way to upload data to host?
We use a JTAG debugger in such a case (BDI3000 recommended).
But please feel free to implement a TFTP put command - contributions are welcome.
Best regards,
Wolfgang Denk