[U-Boot] U-book and GPLv3? (fwd)

[Richard Stallman]

Files without a copyright notice and a license notice are a legal problem.

Legally, every file is copyrighted.  If there's no copyright notice,
that just means it gives no info about who the copyright holder is.

The lack of a license notice is a problem.  If the file is trivial,
just a few lines, maybe it does not matter.  But otherwise, if there
is no license, that means it doesn't give people permission to copy or
change or redistribute the file.  Perhaps even the U-boot developers
don't have this permission.