Need To Know How U-boot Command Line Interface works

?Hi all,

I need to know how the command line interface has been developed in U-boot?

I could understand few things about command line interface from command.h and command.c file.

I am unable to get how from command line the U_BOOT_CMD macro has been called?

Also, what is the need of the special section for U-boot i.e ".u_boot_cmd"?

If any one has more info about it, please let me know as I am developing a similar command line interface for my application.

Thanks in advance.

Cheers,
Prashant