docs/process/contributing.rst - filogic/atf - Gitiles

 Contributor's Guide
 ===================

 Getting Started
 ---------------

 -  Make sure you have a Github account and you are logged on
    `developer.trustedfirmware.org`_.
 -  Create an `issue`_ for your work if one does not already exist. This gives
    everyone visibility of whether others are working on something similar.

    -  If you intend to include Third Party IP in your contribution, please
       raise a separate `issue`_ for this and ensure that the changes that
       include Third Party IP are made on a separate topic branch.

 -  Clone `Trusted Firmware-A`_ on your own machine as suggested on the
    `User Guide`_.
 -  Create a local topic branch based on the `Trusted Firmware-A`_ ``master``
    branch.

 Making Changes
 --------------

 -  Make commits of logical units. See these general `Git guidelines`_ for
    contributing to a project.
 -  Follow the `Coding Guidelines`_.

    -  Use the checkpatch.pl script provided with the Linux source tree. A
       Makefile target is provided for convenience (see the "Checking source code
       style" section in the `User Guide`_).

 -  Keep the commits on topic. If you need to fix another bug or make another
    enhancement, please create a separate `issue`_ and address it on a separate
    topic branch.
 -  Avoid long commit series. If you do have a long series, consider whether
    some commits should be squashed together or addressed in a separate topic.
 -  Make sure your commit messages are in the proper format. If a commit fixes
    an `issue`_, include a reference.
 -  Where appropriate, please update the documentation.

    -  Consider whether the `User Guide`_, `Porting Guide`_, `Firmware Design`_
       or other in-source documentation needs updating.
    -  Ensure that each changed file has the correct copyright and license
       information. Files that entirely consist of contributions to this
       project should have a copyright notice and BSD-3-Clause SPDX license
       identifier of the form as shown in `license.rst`_. Files that contain
       changes to imported Third Party IP files should retain their original
       copyright and license notices. For significant contributions you may
       add your own copyright notice in following format:

       ::

           Portions copyright (c) [XXXX-]YYYY, <OWNER>. All rights reserved.

       where XXXX is the year of first contribution (if different to YYYY) and
       YYYY is the year of most recent contribution. <OWNER> is your name or
       your company name.
    -  If you are submitting new files that you intend to be the technical
       sub-maintainer for (for example, a new platform port), then also update
       the `Maintainers`_ file.
    -  For topics with multiple commits, you should make all documentation
       changes (and nothing else) in the last commit of the series. Otherwise,
       include the documentation changes within the single commit.

 -  Please test your changes. As a minimum, ensure that Linux boots on the
    Foundation FVP. See `Running the software on FVP`_ for more information. For
    more extensive testing, consider running the `TF-A Tests`_ against your
    patches.

 Submitting Changes
 ------------------

 -  Ensure that each commit in the series has at least one ``Signed-off-by:``
    line, using your real name and email address. The names in the
    ``Signed-off-by:`` and ``Author:`` lines must match. If anyone else
    contributes to the commit, they must also add their own ``Signed-off-by:``
    line. By adding this line the contributor certifies the contribution is made
    under the terms of the `Developer Certificate of Origin (DCO)`_.

    More details may be found in the `Gerrit Signed-off-by Lines guidelines`_.

 -  Ensure that each commit also has a unique ``Change-Id:`` line. If you have
    cloned the repository with the "`Clone with commit-msg hook`" clone method
    (as advised on the `User Guide`_), this should already be the case.

    More details may be found in the `Gerrit Change-Ids documentation`_.

 -  Submit your changes for review at https://review.trustedfirmware.org
    targeting the ``integration`` branch.

    -  The changes will then undergo further review and testing by the
       `Maintainers`_. Any review comments will be made directly on your patch.
       This may require you to do some rework.

    Refer to the `Gerrit Uploading Changes documentation`_ for more details.

 -  When the changes are accepted, the `Maintainers`_ will integrate them.

    -  Typically, the `Maintainers`_ will merge the changes into the
       ``integration`` branch.
    -  If the changes are not based on a sufficiently-recent commit, or if they
       cannot be automatically rebased, then the `Maintainers`_ may rebase it on
       the ``master`` branch or ask you to do so.
    -  After final integration testing, the changes will make their way into the
       ``master`` branch. If a problem is found during integration, the merge
       commit will be removed from the ``integration`` branch and the
       `Maintainers`_ will ask you to create a new patch set to resolve the
       problem.

 Binary Components
 -----------------

 -  Platforms may depend on binary components submitted to the `Trusted Firmware
    binary repository`_ if they require code that the contributor is unable or
    unwilling to open-source. This should be used as a rare exception.
 -  All binary components must follow the contribution guidelines (in particular
    licensing rules) outlined in the `readme.rst <tf-binaries-readme_>`_ file of
    the binary repository.
 -  Binary components must be restricted to only the specific functionality that
    cannot be open-sourced and must be linked into a larger open-source platform
    port. The majority of the platform port must still be implemented in open
    source. Platform ports that are merely a thin wrapper around a binary
    component that contains all the actual code will not be accepted.
 -  Only platform port code (i.e. in the ``plat/<vendor>`` directory) may rely on
    binary components. Generic code must always be fully open-source.

 --------------

 *Copyright (c) 2013-2019, Arm Limited and Contributors. All rights reserved.*

 .. _developer.trustedfirmware.org: https://developer.trustedfirmware.org
 .. _issue: https://developer.trustedfirmware.org/project/board/1/
 .. _Trusted Firmware-A: https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git
 .. _Git guidelines: http://git-scm.com/book/ch5-2.html
 .. _Coding Guidelines: ./coding-guidelines.rst
 .. _User Guide: ../getting_started/user-guide.rst
 .. _Porting Guide: ../getting_started/porting-guide.rst
 .. _Firmware Design: ../design/firmware-design.rst
 .. _license.rst: ../license.rst
 .. _Acknowledgements: ../acknowledgements.rst
 .. _Maintainers: ../maintainers.rst
 .. _Running the software on FVP: ../getting_started/user-guide.rst#user-content-running-the-software-on-fvp
 .. _Developer Certificate of Origin (DCO): ../../dco.txt
 .. _Gerrit Uploading Changes documentation: https://review.trustedfirmware.org/Documentation/user-upload.html
 .. _Gerrit Signed-off-by Lines guidelines: https://review.trustedfirmware.org/Documentation/user-signedoffby.html
 .. _Gerrit Change-Ids documentation: https://review.trustedfirmware.org/Documentation/user-changeid.html
 .. _TF-A Tests: https://git.trustedfirmware.org/TF-A/tf-a-tests.git/about/
 .. _Trusted Firmware binary repository: https://review.trustedfirmware.org/admin/repos/tf-binaries
 .. _tf-binaries-readme: https://git.trustedfirmware.org/tf-binaries.git/tree/readme.rst
	Contributor's Guide
	===================

	Getting Started
	---------------

	- Make sure you have a Github account and you are logged on
	`developer.trustedfirmware.org`_.
	- Create an `issue`_ for your work if one does not already exist. This gives
	everyone visibility of whether others are working on something similar.

	- If you intend to include Third Party IP in your contribution, please
	raise a separate `issue`_ for this and ensure that the changes that
	include Third Party IP are made on a separate topic branch.

	- Clone `Trusted Firmware-A`_ on your own machine as suggested on the
	`User Guide`_.
	- Create a local topic branch based on the `Trusted Firmware-A`_ ``master``
	branch.

	Making Changes
	--------------

	- Make commits of logical units. See these general `Git guidelines`_ for
	contributing to a project.
	- Follow the `Coding Guidelines`_.

	- Use the checkpatch.pl script provided with the Linux source tree. A
	Makefile target is provided for convenience (see the "Checking source code
	style" section in the `User Guide`_).

	- Keep the commits on topic. If you need to fix another bug or make another
	enhancement, please create a separate `issue`_ and address it on a separate
	topic branch.
	- Avoid long commit series. If you do have a long series, consider whether
	some commits should be squashed together or addressed in a separate topic.
	- Make sure your commit messages are in the proper format. If a commit fixes
	an `issue`_, include a reference.
	- Where appropriate, please update the documentation.

	- Consider whether the `User Guide`_, `Porting Guide`_, `Firmware Design`_
	or other in-source documentation needs updating.
	- Ensure that each changed file has the correct copyright and license
	information. Files that entirely consist of contributions to this
	project should have a copyright notice and BSD-3-Clause SPDX license
	identifier of the form as shown in `license.rst`_. Files that contain
	changes to imported Third Party IP files should retain their original
	copyright and license notices. For significant contributions you may
	add your own copyright notice in following format:

	::

	Portions copyright (c) [XXXX-]YYYY, <OWNER>. All rights reserved.

	where XXXX is the year of first contribution (if different to YYYY) and
	YYYY is the year of most recent contribution. <OWNER> is your name or
	your company name.
	- If you are submitting new files that you intend to be the technical
	sub-maintainer for (for example, a new platform port), then also update
	the `Maintainers`_ file.
	- For topics with multiple commits, you should make all documentation
	changes (and nothing else) in the last commit of the series. Otherwise,
	include the documentation changes within the single commit.

	- Please test your changes. As a minimum, ensure that Linux boots on the
	Foundation FVP. See `Running the software on FVP`_ for more information. For
	more extensive testing, consider running the `TF-A Tests`_ against your
	patches.

	Submitting Changes
	------------------

	- Ensure that each commit in the series has at least one ``Signed-off-by:``
	line, using your real name and email address. The names in the
	``Signed-off-by:`` and ``Author:`` lines must match. If anyone else
	contributes to the commit, they must also add their own ``Signed-off-by:``
	line. By adding this line the contributor certifies the contribution is made
	under the terms of the `Developer Certificate of Origin (DCO)`_.

	More details may be found in the `Gerrit Signed-off-by Lines guidelines`_.

	- Ensure that each commit also has a unique ``Change-Id:`` line. If you have
	cloned the repository with the "`Clone with commit-msg hook`" clone method
	(as advised on the `User Guide`_), this should already be the case.

	More details may be found in the `Gerrit Change-Ids documentation`_.

	- Submit your changes for review at https://review.trustedfirmware.org
	targeting the ``integration`` branch.

	- The changes will then undergo further review and testing by the
	`Maintainers`_. Any review comments will be made directly on your patch.
	This may require you to do some rework.

	Refer to the `Gerrit Uploading Changes documentation`_ for more details.

	- When the changes are accepted, the `Maintainers`_ will integrate them.

	- Typically, the `Maintainers`_ will merge the changes into the
	``integration`` branch.
	- If the changes are not based on a sufficiently-recent commit, or if they
	cannot be automatically rebased, then the `Maintainers`_ may rebase it on
	the ``master`` branch or ask you to do so.
	- After final integration testing, the changes will make their way into the
	``master`` branch. If a problem is found during integration, the merge
	commit will be removed from the ``integration`` branch and the
	`Maintainers`_ will ask you to create a new patch set to resolve the
	problem.

	Binary Components
	-----------------

	- Platforms may depend on binary components submitted to the `Trusted Firmware
	binary repository`_ if they require code that the contributor is unable or
	unwilling to open-source. This should be used as a rare exception.
	- All binary components must follow the contribution guidelines (in particular
	licensing rules) outlined in the `readme.rst <tf-binaries-readme_>`_ file of
	the binary repository.
	- Binary components must be restricted to only the specific functionality that
	cannot be open-sourced and must be linked into a larger open-source platform
	port. The majority of the platform port must still be implemented in open
	source. Platform ports that are merely a thin wrapper around a binary
	component that contains all the actual code will not be accepted.
	- Only platform port code (i.e. in the ``plat/<vendor>`` directory) may rely on
	binary components. Generic code must always be fully open-source.

	--------------

	Copyright (c) 2013-2019, Arm Limited and Contributors. All rights reserved.

	.. _developer.trustedfirmware.org: https://developer.trustedfirmware.org
	.. _issue: https://developer.trustedfirmware.org/project/board/1/
	.. _Trusted Firmware-A: https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git
	.. _Git guidelines: http://git-scm.com/book/ch5-2.html
	.. _Coding Guidelines: ./coding-guidelines.rst
	.. _User Guide: ../getting_started/user-guide.rst
	.. _Porting Guide: ../getting_started/porting-guide.rst
	.. _Firmware Design: ../design/firmware-design.rst
	.. _license.rst: ../license.rst
	.. _Acknowledgements: ../acknowledgements.rst
	.. _Maintainers: ../maintainers.rst
	.. _Running the software on FVP: ../getting_started/user-guide.rst#user-content-running-the-software-on-fvp
	.. _Developer Certificate of Origin (DCO): ../../dco.txt
	.. _Gerrit Uploading Changes documentation: https://review.trustedfirmware.org/Documentation/user-upload.html
	.. _Gerrit Signed-off-by Lines guidelines: https://review.trustedfirmware.org/Documentation/user-signedoffby.html
	.. _Gerrit Change-Ids documentation: https://review.trustedfirmware.org/Documentation/user-changeid.html
	.. _TF-A Tests: https://git.trustedfirmware.org/TF-A/tf-a-tests.git/about/
	.. _Trusted Firmware binary repository: https://review.trustedfirmware.org/admin/repos/tf-binaries
	.. _tf-binaries-readme: https://git.trustedfirmware.org/tf-binaries.git/tree/readme.rst