Created attachment 186664 [details] patch file Fix license information.
It seems to be BSD2Clause and BSD3Clause only, not GPLv2.
(In reply to Emmanuel Vadot from comment #1) Extract source archive and check plat/sun50iw1p1/include/ccmu.h. There are well-known sentences as following. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
Ah right, some code for allwinner might have be taken from either the Linux kernel or U-Boot. I'm ok with this patch but I don't know if it's the right way of defining licence. I'll leave that for some ports commiter.
Comitted, thanks.
A commit references this bug: Author: linimon Date: Mon Jun 18 21:45:43 UTC 2018 New revision: 472719 URL: https://svnweb.freebsd.org/changeset/ports/472719 Log: Adjust license. PR: 222557 Submitted by: maintainer Changes: head/sysutils/atf-allwinner/Makefile