[U-Boot-Users] hello world application

I want to make gzipped hello_world application and later execute it using bootm command.

I figured that mkimage is the utility for making compressed STANDALONE image.

But it needs an option mkimage -d <datafile>

Now what is this datafile? Is it hello_world or hello_world.bin or hello_world.srec I tried all 3, but they give different sizes of gzipped image. So i am confused.

My target architecture is ARM.

Thanks.

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