[M] Change in coreboot[master]: mainboard: Add SPDX license headers to Makefiles

[Michael Niewöhner (Code Review)]

Attention is currently required from: Felix Singer, Jason Nien, Jeremy Soller, Martin Roth, Tim Crawford, Nico Huber, Tarun Tuli, Martin L Roth, Damien Zammit, Subrata Banik, Maxim Polyakov, Kapil Porwal, Alexander Couzens, Werner Zeh, Evgeny Zinoviev.

Michael Niewöhner has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/68982 )

Change subject: mainboard: Add SPDX license headers to Makefiles
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Patch Set 2:

(1 comment)

Patchset:

PS2:
> It's not that AMD is actually demanding this, but the tool that they're using (palamida scan) is, in […]
> > As far as the license used, the license of coreboot as a whole is GPL V2.  If someone contributes a file and doesn't specify a different license, the license defaults to GPL V2 as a part of the coreboot project.  These patches just clarify that the Makefile are licensed under GPL V2.
>
> Is this documented somewhere? As the top-level Makefile is BSD licensed, I

would have guessed otherwise.

Somehow, yes:

https://www.coreboot.org/Development_Guidelines#Sign-off_Procedure

License Issues
Contributed code must be GPL'd (preferrably 'GPLv2', but 'GPLv2 or any later version' is fine, too). At the very minimum the code must have a GPLv2-compatible license.

^ When there is no license specified I would assume a commit is covered by the "default" license (GPLv2 from COPYING), as Martin said.