Re: [OSS-Tools] [PATCH dt-utils v2 1/9] treewide: add SPDX identifiers to files with GPL-2.0-only license

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

On 31.07.23 11:11, Roland Hieber wrote:
> Move the GPL-2.0 license text to the new LICENSES folder, where it will
> reside next to all other licenses. Add the rest of the license too (see
> FSF FAQ [1]) and clean up the hard page breaks in the process.
> 
> Add the standard license dedication and warranty disclaimer too for
> completeness sake, so we can easily reference the full license terms by
> using its SPDX identifier, and don't have to carry around the
> boilerplate headers in the future. However, keep the already existing
> license headers in files, as recommended in the REUSE FAQ [2].
> 
> "COPYING" is probably still referenced somewhere, so make it point to
> the new location of the GPL.
> 
> Link: [1] https://www.gnu.org/licenses/gpl-faq.html#GPLOmitPreamble
> Link: [2] https://reuse.software/faq/#edit-copyright-and-licensing
> Signed-off-by: Roland Hieber <rhi@pengutronix.de>

Reviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de>

> --
> PATCH v2:
>  * move COPYING to LICENSES/GPL-2.0-only.txt
>  * use the complete GPL-2.0 text
>  * don't remove boilerplate license headers from files
> 
> PATCH v1: https://lore.pengutronix.org/oss-tools/20210326210647.8648-2-rhi@pengutronix.de
> ---
>  COPYING                                     | 281 +---------------
>  LICENSES/GPL-2.0-only.txt                   | 350 ++++++++++++++++++++
>  src/barebox-state.c                         |   1 +
>  src/barebox-state/backend_bucket_circular.c |   1 +
>  src/barebox-state/backend_bucket_direct.c   |   1 +
>  src/barebox-state/backend_format_dtb.c      |   1 +
>  src/barebox-state/backend_format_raw.c      |   1 +
>  src/barebox-state/backend_storage.c         |   1 +
>  src/crypto/digest.c                         |   1 +
>  src/crypto/hmac.c                           |   3 +-
>  src/crypto/internal.h                       |   3 +-
>  src/crypto/keystore.h                       |   1 +
>  src/digest.h                                |   1 +
>  src/dtblint-imx-pinmux.c                    |   1 +
>  src/dtblint.c                               |   1 +
>  src/fdt.c                                   |   1 +
>  src/keystore-blob.c                         |   1 +
>  src/libdt.c                                 |   1 +
>  18 files changed, 367 insertions(+), 284 deletions(-)
>  mode change 100644 => 120000 COPYING
>  create mode 100644 LICENSES/GPL-2.0-only.txt
> 
> diff --git a/COPYING b/COPYING
> deleted file mode 100644
> index 5a965fbc58c9..000000000000
> --- a/COPYING
> +++ /dev/null
> @@ -1,280 +0,0 @@
> -		    GNU GENERAL PUBLIC LICENSE
> -		       Version 2, June 1991
> -
> - Copyright (C) 1989, 1991 Free Software Foundation, Inc.
> -     59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
> - Everyone is permitted to copy and distribute verbatim copies
> - of this license document, but changing it is not allowed.
> -
> -			    Preamble
> -
> -  The licenses for most software are designed to take away your
> -freedom to share and change it.  By contrast, the GNU General Public
> -License is intended to guarantee your freedom to share and change free
> -software--to make sure the software is free for all its users.  This
> -General Public License applies to most of the Free Software
> -Foundation's software and to any other program whose authors commit to
> -using it.  (Some other Free Software Foundation software is covered by
> -the GNU Library General Public License instead.)  You can apply it to
> -your programs, too.
> -
> -  When we speak of free software, we are referring to freedom, not
> -price.  Our General Public Licenses are designed to make sure that you
> -have the freedom to distribute copies of free software (and charge for
> -this service if you wish), that you receive source code or can get it
> -if you want it, that you can change the software or use pieces of it
> -in new free programs; and that you know you can do these things.
> -
> -  To protect your rights, we need to make restrictions that forbid
> -anyone to deny you these rights or to ask you to surrender the rights.
> -These restrictions translate to certain responsibilities for you if you
> -distribute copies of the software, or if you modify it.
> -
> -  For example, if you distribute copies of such a program, whether
> -gratis or for a fee, you must give the recipients all the rights that
> -you have.  You must make sure that they, too, receive or can get the
> -source code.  And you must show them these terms so they know their
> -rights.
> -
> -  We protect your rights with two steps: (1) copyright the software, and
> -(2) offer you this license which gives you legal permission to copy,
> -distribute and/or modify the software.
> -
> -  Also, for each author's protection and ours, we want to make certain
> -that everyone understands that there is no warranty for this free
> -software.  If the software is modified by someone else and passed on, we
> -want its recipients to know that what they have is not the original, so
> -that any problems introduced by others will not reflect on the original
> -authors' reputations.
> -
> -  Finally, any free program is threatened constantly by software
> -patents.  We wish to avoid the danger that redistributors of a free
> -program will individually obtain patent licenses, in effect making the
> -program proprietary.  To prevent this, we have made it clear that any
> -patent must be licensed for everyone's free use or not licensed at all.
> -
> -  The precise terms and conditions for copying, distribution and
> -modification follow.
> -\f
> -		    GNU GENERAL PUBLIC LICENSE
> -   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
> -
> -  0. This License applies to any program or other work which contains
> -a notice placed by the copyright holder saying it may be distributed
> -under the terms of this General Public License.  The "Program", below,
> -refers to any such program or work, and a "work based on the Program"
> -means either the Program or any derivative work under copyright law:
> -that is to say, a work containing the Program or a portion of it,
> -either verbatim or with modifications and/or translated into another
> -language.  (Hereinafter, translation is included without limitation in
> -the term "modification".)  Each licensee is addressed as "you".
> -
> -Activities other than copying, distribution and modification are not
> -covered by this License; they are outside its scope.  The act of
> -running the Program is not restricted, and the output from the Program
> -is covered only if its contents constitute a work based on the
> -Program (independent of having been made by running the Program).
> -Whether that is true depends on what the Program does.
> -
> -  1. You may copy and distribute verbatim copies of the Program's
> -source code as you receive it, in any medium, provided that you
> -conspicuously and appropriately publish on each copy an appropriate
> -copyright notice and disclaimer of warranty; keep intact all the
> -notices that refer to this License and to the absence of any warranty;
> -and give any other recipients of the Program a copy of this License
> -along with the Program.
> -
> -You may charge a fee for the physical act of transferring a copy, and
> -you may at your option offer warranty protection in exchange for a fee.
> -
> -  2. You may modify your copy or copies of the Program or any portion
> -of it, thus forming a work based on the Program, and copy and
> -distribute such modifications or work under the terms of Section 1
> -above, provided that you also meet all of these conditions:
> -
> -    a) You must cause the modified files to carry prominent notices
> -    stating that you changed the files and the date of any change.
> -
> -    b) You must cause any work that you distribute or publish, that in
> -    whole or in part contains or is derived from the Program or any
> -    part thereof, to be licensed as a whole at no charge to all third
> -    parties under the terms of this License.
> -
> -    c) If the modified program normally reads commands interactively
> -    when run, you must cause it, when started running for such
> -    interactive use in the most ordinary way, to print or display an
> -    announcement including an appropriate copyright notice and a
> -    notice that there is no warranty (or else, saying that you provide
> -    a warranty) and that users may redistribute the program under
> -    these conditions, and telling the user how to view a copy of this
> -    License.  (Exception: if the Program itself is interactive but
> -    does not normally print such an announcement, your work based on
> -    the Program is not required to print an announcement.)
> -\f
> -These requirements apply to the modified work as a whole.  If
> -identifiable sections of that work are not derived from the Program,
> -and can be reasonably considered independent and separate works in
> -themselves, then this License, and its terms, do not apply to those
> -sections when you distribute them as separate works.  But when you
> -distribute the same sections as part of a whole which is a work based
> -on the Program, the distribution of the whole must be on the terms of
> -this License, whose permissions for other licensees extend to the
> -entire whole, and thus to each and every part regardless of who wrote it.
> -
> -Thus, it is not the intent of this section to claim rights or contest
> -your rights to work written entirely by you; rather, the intent is to
> -exercise the right to control the distribution of derivative or
> -collective works based on the Program.
> -
> -In addition, mere aggregation of another work not based on the Program
> -with the Program (or with a work based on the Program) on a volume of
> -a storage or distribution medium does not bring the other work under
> -the scope of this License.
> -
> -  3. You may copy and distribute the Program (or a work based on it,
> -under Section 2) in object code or executable form under the terms of
> -Sections 1 and 2 above provided that you also do one of the following:
> -
> -    a) Accompany it with the complete corresponding machine-readable
> -    source code, which must be distributed under the terms of Sections
> -    1 and 2 above on a medium customarily used for software interchange; or,
> -
> -    b) Accompany it with a written offer, valid for at least three
> -    years, to give any third party, for a charge no more than your
> -    cost of physically performing source distribution, a complete
> -    machine-readable copy of the corresponding source code, to be
> -    distributed under the terms of Sections 1 and 2 above on a medium
> -    customarily used for software interchange; or,
> -
> -    c) Accompany it with the information you received as to the offer
> -    to distribute corresponding source code.  (This alternative is
> -    allowed only for noncommercial distribution and only if you
> -    received the program in object code or executable form with such
> -    an offer, in accord with Subsection b above.)
> -
> -The source code for a work means the preferred form of the work for
> -making modifications to it.  For an executable work, complete source
> -code means all the source code for all modules it contains, plus any
> -associated interface definition files, plus the scripts used to
> -control compilation and installation of the executable.  However, as a
> -special exception, the source code distributed need not include
> -anything that is normally distributed (in either source or binary
> -form) with the major components (compiler, kernel, and so on) of the
> -operating system on which the executable runs, unless that component
> -itself accompanies the executable.
> -
> -If distribution of executable or object code is made by offering
> -access to copy from a designated place, then offering equivalent
> -access to copy the source code from the same place counts as
> -distribution of the source code, even though third parties are not
> -compelled to copy the source along with the object code.
> -\f
> -  4. You may not copy, modify, sublicense, or distribute the Program
> -except as expressly provided under this License.  Any attempt
> -otherwise to copy, modify, sublicense or distribute the Program is
> -void, and will automatically terminate your rights under this License.
> -However, parties who have received copies, or rights, from you under
> -this License will not have their licenses terminated so long as such
> -parties remain in full compliance.
> -
> -  5. You are not required to accept this License, since you have not
> -signed it.  However, nothing else grants you permission to modify or
> -distribute the Program or its derivative works.  These actions are
> -prohibited by law if you do not accept this License.  Therefore, by
> -modifying or distributing the Program (or any work based on the
> -Program), you indicate your acceptance of this License to do so, and
> -all its terms and conditions for copying, distributing or modifying
> -the Program or works based on it.
> -
> -  6. Each time you redistribute the Program (or any work based on the
> -Program), the recipient automatically receives a license from the
> -original licensor to copy, distribute or modify the Program subject to
> -these terms and conditions.  You may not impose any further
> -restrictions on the recipients' exercise of the rights granted herein.
> -You are not responsible for enforcing compliance by third parties to
> -this License.
> -
> -  7. If, as a consequence of a court judgment or allegation of patent
> -infringement or for any other reason (not limited to patent issues),
> -conditions are imposed on you (whether by court order, agreement or
> -otherwise) that contradict the conditions of this License, they do not
> -excuse you from the conditions of this License.  If you cannot
> -distribute so as to satisfy simultaneously your obligations under this
> -License and any other pertinent obligations, then as a consequence you
> -may not distribute the Program at all.  For example, if a patent
> -license would not permit royalty-free redistribution of the Program by
> -all those who receive copies directly or indirectly through you, then
> -the only way you could satisfy both it and this License would be to
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> -
> -If any portion of this section is held invalid or unenforceable under
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> -apply and the section as a whole is intended to apply in other
> -circumstances.
> -
> -It is not the purpose of this section to induce you to infringe any
> -patents or other property right claims or to contest validity of any
> -such claims; this section has the sole purpose of protecting the
> -integrity of the free software distribution system, which is
> -implemented by public license practices.  Many people have made
> -generous contributions to the wide range of software distributed
> -through that system in reliance on consistent application of that
> -system; it is up to the author/donor to decide if he or she is willing
> -to distribute software through any other system and a licensee cannot
> -impose that choice.
> -
> -This section is intended to make thoroughly clear what is believed to
> -be a consequence of the rest of this License.
> -\f
> -  8. If the distribution and/or use of the Program is restricted in
> -certain countries either by patents or by copyrighted interfaces, the
> -original copyright holder who places the Program under this License
> -may add an explicit geographical distribution limitation excluding
> -those countries, so that distribution is permitted only in or among
> -countries not thus excluded.  In such case, this License incorporates
> -the limitation as if written in the body of this License.
> -
> -  9. The Free Software Foundation may publish revised and/or new versions
> -of the General Public License from time to time.  Such new versions will
> -be similar in spirit to the present version, but may differ in detail to
> -address new problems or concerns.
> -
> -Each version is given a distinguishing version number.  If the Program
> -specifies a version number of this License which applies to it and "any
> -later version", you have the option of following the terms and conditions
> -either of that version or of any later version published by the Free
> -Software Foundation.  If the Program does not specify a version number of
> -this License, you may choose any version ever published by the Free Software
> -Foundation.
> -
> -  10. If you wish to incorporate parts of the Program into other free
> -programs whose distribution conditions are different, write to the author
> -to ask for permission.  For software which is copyrighted by the Free
> -Software Foundation, write to the Free Software Foundation; we sometimes
> -make exceptions for this.  Our decision will be guided by the two goals
> -of preserving the free status of all derivatives of our free software and
> -of promoting the sharing and reuse of software generally.
> -
> -			    NO WARRANTY
> -
> -  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
> -FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
> -OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
> -PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
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> -MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
> -TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
> -PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
> -REPAIR OR CORRECTION.
> -
> -  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
> -WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
> -REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
> -INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
> -OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
> -TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
> -YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
> -PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
> -POSSIBILITY OF SUCH DAMAGES.
> -
> -		     END OF TERMS AND CONDITIONS
> diff --git a/COPYING b/COPYING
> new file mode 120000
> index 000000000000..c6749981b95b
> --- /dev/null
> +++ b/COPYING
> @@ -0,0 +1 @@
> +LICENSES/GPL-2.0-only.txt
> \ No newline at end of file
> diff --git a/LICENSES/GPL-2.0-only.txt b/LICENSES/GPL-2.0-only.txt
> new file mode 100644
> index 000000000000..9a6e1fb7066c
> --- /dev/null
> +++ b/LICENSES/GPL-2.0-only.txt
> @@ -0,0 +1,350 @@
> +This program is free software; you can redistribute it and/or
> +modify it under the terms of the GNU General Public License
> +version 2, as published by the Free Software Foundation.
> +
> +This program is distributed in the hope that it will be useful,
> +but WITHOUT ANY WARRANTY; without even the implied warranty of
> +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> +GNU General Public License for more details.
> +
> +
> +		    GNU GENERAL PUBLIC LICENSE
> +		       Version 2, June 1991
> +
> + Copyright (C) 1989, 1991 Free Software Foundation, Inc.
> +     59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
> + Everyone is permitted to copy and distribute verbatim copies
> + of this license document, but changing it is not allowed.
> +
> +			    Preamble
> +
> +  The licenses for most software are designed to take away your
> +freedom to share and change it.  By contrast, the GNU General Public
> +License is intended to guarantee your freedom to share and change free
> +software--to make sure the software is free for all its users.  This
> +General Public License applies to most of the Free Software
> +Foundation's software and to any other program whose authors commit to
> +using it.  (Some other Free Software Foundation software is covered by
> +the GNU Library General Public License instead.)  You can apply it to
> +your programs, too.
> +
> +  When we speak of free software, we are referring to freedom, not
> +price.  Our General Public Licenses are designed to make sure that you
> +have the freedom to distribute copies of free software (and charge for
> +this service if you wish), that you receive source code or can get it
> +if you want it, that you can change the software or use pieces of it
> +in new free programs; and that you know you can do these things.
> +
> +  To protect your rights, we need to make restrictions that forbid
> +anyone to deny you these rights or to ask you to surrender the rights.
> +These restrictions translate to certain responsibilities for you if you
> +distribute copies of the software, or if you modify it.
> +
> +  For example, if you distribute copies of such a program, whether
> +gratis or for a fee, you must give the recipients all the rights that
> +you have.  You must make sure that they, too, receive or can get the
> +source code.  And you must show them these terms so they know their
> +rights.
> +
> +  We protect your rights with two steps: (1) copyright the software, and
> +(2) offer you this license which gives you legal permission to copy,
> +distribute and/or modify the software.
> +
> +  Also, for each author's protection and ours, we want to make certain
> +that everyone understands that there is no warranty for this free
> +software.  If the software is modified by someone else and passed on, we
> +want its recipients to know that what they have is not the original, so
> +that any problems introduced by others will not reflect on the original
> +authors' reputations.
> +
> +  Finally, any free program is threatened constantly by software
> +patents.  We wish to avoid the danger that redistributors of a free
> +program will individually obtain patent licenses, in effect making the
> +program proprietary.  To prevent this, we have made it clear that any
> +patent must be licensed for everyone's free use or not licensed at all.
> +
> +  The precise terms and conditions for copying, distribution and
> +modification follow.
> +
> +		    GNU GENERAL PUBLIC LICENSE
> +   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
> +
> +  0. This License applies to any program or other work which contains
> +a notice placed by the copyright holder saying it may be distributed
> +under the terms of this General Public License.  The "Program", below,
> +refers to any such program or work, and a "work based on the Program"
> +means either the Program or any derivative work under copyright law:
> +that is to say, a work containing the Program or a portion of it,
> +either verbatim or with modifications and/or translated into another
> +language.  (Hereinafter, translation is included without limitation in
> +the term "modification".)  Each licensee is addressed as "you".
> +
> +Activities other than copying, distribution and modification are not
> +covered by this License; they are outside its scope.  The act of
> +running the Program is not restricted, and the output from the Program
> +is covered only if its contents constitute a work based on the
> +Program (independent of having been made by running the Program).
> +Whether that is true depends on what the Program does.
> +
> +  1. You may copy and distribute verbatim copies of the Program's
> +source code as you receive it, in any medium, provided that you
> +conspicuously and appropriately publish on each copy an appropriate
> +copyright notice and disclaimer of warranty; keep intact all the
> +notices that refer to this License and to the absence of any warranty;
> +and give any other recipients of the Program a copy of this License
> +along with the Program.
> +
> +You may charge a fee for the physical act of transferring a copy, and
> +you may at your option offer warranty protection in exchange for a fee.
> +
> +  2. You may modify your copy or copies of the Program or any portion
> +of it, thus forming a work based on the Program, and copy and
> +distribute such modifications or work under the terms of Section 1
> +above, provided that you also meet all of these conditions:
> +
> +    a) You must cause the modified files to carry prominent notices
> +    stating that you changed the files and the date of any change.
> +
> +    b) You must cause any work that you distribute or publish, that in
> +    whole or in part contains or is derived from the Program or any
> +    part thereof, to be licensed as a whole at no charge to all third
> +    parties under the terms of this License.
> +
> +    c) If the modified program normally reads commands interactively
> +    when run, you must cause it, when started running for such
> +    interactive use in the most ordinary way, to print or display an
> +    announcement including an appropriate copyright notice and a
> +    notice that there is no warranty (or else, saying that you provide
> +    a warranty) and that users may redistribute the program under
> +    these conditions, and telling the user how to view a copy of this
> +    License.  (Exception: if the Program itself is interactive but
> +    does not normally print such an announcement, your work based on
> +    the Program is not required to print an announcement.)
> +
> +These requirements apply to the modified work as a whole.  If
> +identifiable sections of that work are not derived from the Program,
> +and can be reasonably considered independent and separate works in
> +themselves, then this License, and its terms, do not apply to those
> +sections when you distribute them as separate works.  But when you
> +distribute the same sections as part of a whole which is a work based
> +on the Program, the distribution of the whole must be on the terms of
> +this License, whose permissions for other licensees extend to the
> +entire whole, and thus to each and every part regardless of who wrote it.
> +
> +Thus, it is not the intent of this section to claim rights or contest
> +your rights to work written entirely by you; rather, the intent is to
> +exercise the right to control the distribution of derivative or
> +collective works based on the Program.
> +
> +In addition, mere aggregation of another work not based on the Program
> +with the Program (or with a work based on the Program) on a volume of
> +a storage or distribution medium does not bring the other work under
> +the scope of this License.
> +
> +  3. You may copy and distribute the Program (or a work based on it,
> +under Section 2) in object code or executable form under the terms of
> +Sections 1 and 2 above provided that you also do one of the following:
> +
> +    a) Accompany it with the complete corresponding machine-readable
> +    source code, which must be distributed under the terms of Sections
> +    1 and 2 above on a medium customarily used for software interchange; or,
> +
> +    b) Accompany it with a written offer, valid for at least three
> +    years, to give any third party, for a charge no more than your
> +    cost of physically performing source distribution, a complete
> +    machine-readable copy of the corresponding source code, to be
> +    distributed under the terms of Sections 1 and 2 above on a medium
> +    customarily used for software interchange; or,
> +
> +    c) Accompany it with the information you received as to the offer
> +    to distribute corresponding source code.  (This alternative is
> +    allowed only for noncommercial distribution and only if you
> +    received the program in object code or executable form with such
> +    an offer, in accord with Subsection b above.)
> +
> +The source code for a work means the preferred form of the work for
> +making modifications to it.  For an executable work, complete source
> +code means all the source code for all modules it contains, plus any
> +associated interface definition files, plus the scripts used to
> +control compilation and installation of the executable.  However, as a
> +special exception, the source code distributed need not include
> +anything that is normally distributed (in either source or binary
> +form) with the major components (compiler, kernel, and so on) of the
> +operating system on which the executable runs, unless that component
> +itself accompanies the executable.
> +
> +If distribution of executable or object code is made by offering
> +access to copy from a designated place, then offering equivalent
> +access to copy the source code from the same place counts as
> +distribution of the source code, even though third parties are not
> +compelled to copy the source along with the object code.
> +
> +  4. You may not copy, modify, sublicense, or distribute the Program
> +except as expressly provided under this License.  Any attempt
> +otherwise to copy, modify, sublicense or distribute the Program is
> +void, and will automatically terminate your rights under this License.
> +However, parties who have received copies, or rights, from you under
> +this License will not have their licenses terminated so long as such
> +parties remain in full compliance.
> +
> +  5. You are not required to accept this License, since you have not
> +signed it.  However, nothing else grants you permission to modify or
> +distribute the Program or its derivative works.  These actions are
> +prohibited by law if you do not accept this License.  Therefore, by
> +modifying or distributing the Program (or any work based on the
> +Program), you indicate your acceptance of this License to do so, and
> +all its terms and conditions for copying, distributing or modifying
> +the Program or works based on it.
> +
> +  6. Each time you redistribute the Program (or any work based on the
> +Program), the recipient automatically receives a license from the
> +original licensor to copy, distribute or modify the Program subject to
> +these terms and conditions.  You may not impose any further
> +restrictions on the recipients' exercise of the rights granted herein.
> +You are not responsible for enforcing compliance by third parties to
> +this License.
> +
> +  7. If, as a consequence of a court judgment or allegation of patent
> +infringement or for any other reason (not limited to patent issues),
> +conditions are imposed on you (whether by court order, agreement or
> +otherwise) that contradict the conditions of this License, they do not
> +excuse you from the conditions of this License.  If you cannot
> +distribute so as to satisfy simultaneously your obligations under this
> +License and any other pertinent obligations, then as a consequence you
> +may not distribute the Program at all.  For example, if a patent
> +license would not permit royalty-free redistribution of the Program by
> +all those who receive copies directly or indirectly through you, then
> +the only way you could satisfy both it and this License would be to
> +refrain entirely from distribution of the Program.
> +
> +If any portion of this section is held invalid or unenforceable under
> +any particular circumstance, the balance of the section is intended to
> +apply and the section as a whole is intended to apply in other
> +circumstances.
> +
> +It is not the purpose of this section to induce you to infringe any
> +patents or other property right claims or to contest validity of any
> +such claims; this section has the sole purpose of protecting the
> +integrity of the free software distribution system, which is
> +implemented by public license practices.  Many people have made
> +generous contributions to the wide range of software distributed
> +through that system in reliance on consistent application of that
> +system; it is up to the author/donor to decide if he or she is willing
> +to distribute software through any other system and a licensee cannot
> +impose that choice.
> +
> +This section is intended to make thoroughly clear what is believed to
> +be a consequence of the rest of this License.
> +
> +  8. If the distribution and/or use of the Program is restricted in
> +certain countries either by patents or by copyrighted interfaces, the
> +original copyright holder who places the Program under this License
> +may add an explicit geographical distribution limitation excluding
> +those countries, so that distribution is permitted only in or among
> +countries not thus excluded.  In such case, this License incorporates
> +the limitation as if written in the body of this License.
> +
> +  9. The Free Software Foundation may publish revised and/or new versions
> +of the General Public License from time to time.  Such new versions will
> +be similar in spirit to the present version, but may differ in detail to
> +address new problems or concerns.
> +
> +Each version is given a distinguishing version number.  If the Program
> +specifies a version number of this License which applies to it and "any
> +later version", you have the option of following the terms and conditions
> +either of that version or of any later version published by the Free
> +Software Foundation.  If the Program does not specify a version number of
> +this License, you may choose any version ever published by the Free Software
> +Foundation.
> +
> +  10. If you wish to incorporate parts of the Program into other free
> +programs whose distribution conditions are different, write to the author
> +to ask for permission.  For software which is copyrighted by the Free
> +Software Foundation, write to the Free Software Foundation; we sometimes
> +make exceptions for this.  Our decision will be guided by the two goals
> +of preserving the free status of all derivatives of our free software and
> +of promoting the sharing and reuse of software generally.
> +
> +			    NO WARRANTY
> +
> +  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
> +FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
> +OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
> +PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
> +OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
> +MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
> +TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
> +PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
> +REPAIR OR CORRECTION.
> +
> +  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
> +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
> +REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
> +INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
> +OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
> +TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
> +YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
> +PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
> +POSSIBILITY OF SUCH DAMAGES.
> +
> +		     END OF TERMS AND CONDITIONS
> +
> +	    How to Apply These Terms to Your New Programs
> +
> +  If you develop a new program, and you want it to be of the greatest
> +possible use to the public, the best way to achieve this is to make it
> +free software which everyone can redistribute and change under these terms.
> +
> +  To do so, attach the following notices to the program.  It is safest
> +to attach them to the start of each source file to most effectively
> +convey the exclusion of warranty; and each file should have at least
> +the "copyright" line and a pointer to where the full notice is found.
> +
> +    <one line to give the program's name and a brief idea of what it does.>
> +    Copyright (C) <year>  <name of author>
> +
> +    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.
> +
> +    This program is distributed in the hope that it will be useful,
> +    but WITHOUT ANY WARRANTY; without even the implied warranty of
> +    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> +    GNU General Public License for more details.
> +
> +    You should have received a copy of the GNU General Public License
> +    along with this program; if not, write to the Free Software
> +    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
> +
> +
> +Also add information on how to contact you by electronic and paper mail.
> +
> +If the program is interactive, make it output a short notice like this
> +when it starts in an interactive mode:
> +
> +    Gnomovision version 69, Copyright (C) year name of author
> +    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
> +    This is free software, and you are welcome to redistribute it
> +    under certain conditions; type `show c' for details.
> +
> +The hypothetical commands `show w' and `show c' should show the appropriate
> +parts of the General Public License.  Of course, the commands you use may
> +be called something other than `show w' and `show c'; they could even be
> +mouse-clicks or menu items--whatever suits your program.
> +
> +You should also get your employer (if you work as a programmer) or your
> +school, if any, to sign a "copyright disclaimer" for the program, if
> +necessary.  Here is a sample; alter the names:
> +
> +  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
> +  `Gnomovision' (which makes passes at compilers) written by James Hacker.
> +
> +  <signature of Ty Coon>, 1 April 1989
> +  Ty Coon, President of Vice
> +
> +This General Public License does not permit incorporating your program into
> +proprietary programs.  If your program is a subroutine library, you may
> +consider it more useful to permit linking proprietary applications with the
> +library.  If this is what you want to do, use the GNU Library General
> +Public License instead of this License.
> diff --git a/src/barebox-state.c b/src/barebox-state.c
> index 7cf2fbf070a9..e74ba1992286 100644
> --- a/src/barebox-state.c
> +++ b/src/barebox-state.c
> @@ -1,3 +1,4 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
>  /*
>   * state.c - state handling tool
>   *
> diff --git a/src/barebox-state/backend_bucket_circular.c b/src/barebox-state/backend_bucket_circular.c
> index 735510e0d36b..0906268f5e7c 100644
> --- a/src/barebox-state/backend_bucket_circular.c
> +++ b/src/barebox-state/backend_bucket_circular.c
> @@ -1,3 +1,4 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
>  /*
>   * Copyright (C) 2016 Pengutronix, Markus Pargmann <mpa@pengutronix.de>
>   *
> diff --git a/src/barebox-state/backend_bucket_direct.c b/src/barebox-state/backend_bucket_direct.c
> index 48c1596c9add..1518ef679f63 100644
> --- a/src/barebox-state/backend_bucket_direct.c
> +++ b/src/barebox-state/backend_bucket_direct.c
> @@ -1,3 +1,4 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
>  /*
>   * Copyright (C) 2016 Pengutronix, Markus Pargmann <mpa@pengutronix.de>
>   *
> diff --git a/src/barebox-state/backend_format_dtb.c b/src/barebox-state/backend_format_dtb.c
> index 48f30db1f5f9..1d701efb3709 100644
> --- a/src/barebox-state/backend_format_dtb.c
> +++ b/src/barebox-state/backend_format_dtb.c
> @@ -1,3 +1,4 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
>  /*
>   * Copyright (C) 2012-2014 Pengutronix, Jan Luebbe <j.luebbe@pengutronix.de>
>   * Copyright (C) 2013-2014 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
> diff --git a/src/barebox-state/backend_format_raw.c b/src/barebox-state/backend_format_raw.c
> index 982df126fbf3..686eb983bfba 100644
> --- a/src/barebox-state/backend_format_raw.c
> +++ b/src/barebox-state/backend_format_raw.c
> @@ -1,3 +1,4 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
>  /*
>   * Copyright (C) 2012-2014 Pengutronix, Jan Luebbe <j.luebbe@pengutronix.de>
>   * Copyright (C) 2013-2014 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
> diff --git a/src/barebox-state/backend_storage.c b/src/barebox-state/backend_storage.c
> index 4c5e1783c199..6d659c1fd85a 100644
> --- a/src/barebox-state/backend_storage.c
> +++ b/src/barebox-state/backend_storage.c
> @@ -1,3 +1,4 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
>  /*
>   * Copyright (C) 2016 Pengutronix, Markus Pargmann <mpa@pengutronix.de>
>   *
> diff --git a/src/crypto/digest.c b/src/crypto/digest.c
> index dc73ede9834d..66bd8068d89d 100644
> --- a/src/crypto/digest.c
> +++ b/src/crypto/digest.c
> @@ -1,3 +1,4 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
>  /*
>   * (C) Copyright 2008-2010 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
>   *
> diff --git a/src/crypto/hmac.c b/src/crypto/hmac.c
> index ab1b24d09c6b..c4429fb37988 100644
> --- a/src/crypto/hmac.c
> +++ b/src/crypto/hmac.c
> @@ -1,7 +1,6 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
>  /*
>   * (C) Copyright 2015 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
> - *
> - * GPL v2 only
>   */
>  
>  #include <common.h>
> diff --git a/src/crypto/internal.h b/src/crypto/internal.h
> index 06254ea7d94f..bf44146bbb46 100644
> --- a/src/crypto/internal.h
> +++ b/src/crypto/internal.h
> @@ -1,7 +1,6 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
>  /*
>   * (C) Copyright 2015 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
> - *
> - * GPL v2 only
>   */
>  
>  int digest_generic_verify(struct digest *d, const unsigned char *md);
> diff --git a/src/crypto/keystore.h b/src/crypto/keystore.h
> index 2cedd73934db..5997347f3719 100644
> --- a/src/crypto/keystore.h
> +++ b/src/crypto/keystore.h
> @@ -1,3 +1,4 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
>  /*
>   * (C) Copyright 2015 Pengutronix, Marc Kleine-Budde <kernel@pengutronix.de>
>   *
> diff --git a/src/digest.h b/src/digest.h
> index 9764e57e43e9..38347a302a81 100644
> --- a/src/digest.h
> +++ b/src/digest.h
> @@ -1,3 +1,4 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
>  /*
>   * (C) Copyright 2008-2010 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
>   *
> diff --git a/src/dtblint-imx-pinmux.c b/src/dtblint-imx-pinmux.c
> index 83bfd90c2d75..1fa2add28f85 100644
> --- a/src/dtblint-imx-pinmux.c
> +++ b/src/dtblint-imx-pinmux.c
> @@ -1,3 +1,4 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
>  /*
>   * Copyright (C) 2015 Pengutronix, Uwe Kleine-König <kernel@pengutronix.de>
>   *
> diff --git a/src/dtblint.c b/src/dtblint.c
> index ed9f0b292315..21597f86aa1a 100644
> --- a/src/dtblint.c
> +++ b/src/dtblint.c
> @@ -1,3 +1,4 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
>  /*
>   * Copyright (C) 2016 Pengutronix, Uwe Kleine-König <kernel@pengutronix.de>
>   *
> diff --git a/src/fdt.c b/src/fdt.c
> index 74d2825d945f..6907c08c9f3a 100644
> --- a/src/fdt.c
> +++ b/src/fdt.c
> @@ -1,3 +1,4 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
>  /*
>   * dtb.c - flat devicetree functions
>   *
> diff --git a/src/keystore-blob.c b/src/keystore-blob.c
> index 8ec07f0a3d56..6c00efe0285c 100644
> --- a/src/keystore-blob.c
> +++ b/src/keystore-blob.c
> @@ -1,3 +1,4 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
>  /*
>   * Copyright (C) 2015 Pengutronix, Marc Kleine-Budde <kernel@pengutronix.de>
>   *
> diff --git a/src/libdt.c b/src/libdt.c
> index 59c811de9e6d..650b40467587 100644
> --- a/src/libdt.c
> +++ b/src/libdt.c
> @@ -1,3 +1,4 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
>  /*
>   * of.c - basic devicetree functions
>   *

-- 
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