matthewlloyd believes that distributing a bootloader and Marlin on the same flash memory makes them one large program, so Marlin's GPLv3 license should cover both. Prusa believes that the bootloader and Marlin are two separate programs aggregated together, so they can have separate licenses.
It does not make sense to me to consider a bootloader and whatever it boots to be one program. seems like GRUB (GPLv3) generally is not considered to infect everything it boots / chainloads.
> Where's the line between two separate programs, and one program with two parts? This is a legal question, which ultimately judges will decide. We believe that a proper criterion depends both on the mechanism of communication (exec, pipes, rpc, function calls within a shared address space, etc.) and the semantics of the communication (what kinds of information are interchanged).