Hi,

We are looking at the standalone application support in u-boot and we feel it will be a good fit for our DDR initialization code that includes a library that we have no right to distribute in source. But we have some questions in regards to the GPL license exception here:

https://gitlab.denx.de/u-boot/u-boot/blob/master/Licenses/Exceptions

GPL License Exception:

Even though U-Boot in general is covered by the GPL-2.0/GPL-2.0+, this does *not* cover the so-called "standalone" applications that use U-Boot services by means of the jump table provided by U-Boot exactly for this purpose - this is merely considered normal use of U-Boot, and does *not* fall under the heading of "derived work".

The header files "include/image.h" and "arch/*/include/asm/u-boot.h" define interfaces to U-Boot.  Including these (unmodified) header files in another file is considered normal use of U-Boot, and does *not* fall under the heading of "derived work". -- Wolfgang Denk

Looking at the standalone examples/hello_world.c, it now includes common.h(gpl license header) and exports.h(no license header).  Same to the stub.c(with compiler.h in addition) which is required to build standalone app.   Would that still consider OK and be exempted from GPL license if we follow this example and include both common.h, exports.h and stub.c in our standalone code?

Thanks in advance for any feedbacks and comments!

Regards, William