[U-Boot] extracting u-boot version from Linux

Hello all,

Newbie to u-boot here! I have read basic user and command manuals and could not find a solution:

I have an c++ application that needs to display various versions of system components; u-boot, kernel, O/S flavor, hardware and software versions. I'm struggling with getting the u-boot version and ask for your help. My ideal situation is to have U-boot report (somehow) to Linux it's version number and have Linux store it in environment variables. Any thoughts?

Thanks!!