File reading in uboot

Hi,
I am trying to add a new command in uboot(common/cmd_..).
I need to have almost 5-6 arguements to that command.
Is it possible to write these arguements in a file which can be read by the implementation of the command?
Is it possible to create and read file at runtime?
Is there any other convenient option than writing those arguements on command line, by means of better user interface?

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