Hello, now I have understand how to make uefi bootable application and how to call uefi fonction, I have question. How can I for example call other application without PE format from bootable UEFI application and from this application, call again UEFI function when I need?

This can include my custom application can be at custom file system.

The simplest form of executable is the DOS style .com format. You load it into memory and execute starting at the first byte.

If you want more control over code and data segments then you will need some form of file format (like ELF, PE, MZ, etc.) to direct a loader on how to place the file into memory.

[Solved] I have found how to thanks
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