Contributing to ARM Trusted Firmware ==================================== Before you start contributing to this project you must sign the ARM Contributor License Agreement (CLA). Individuals who want to contribute their own work must sign and return an Individual CLA. Companies that want to contribute must sign and return a Corporate CLA if their employees' intellectual property has been assigned to the employer. Copies of the CLAs are available from the [contributing page] of the ARM website. For this project, ARM also requires the GitHub account name(s) associated with each individual contributor or the designated employees of corporate contributors. Only contributions originating from these accounts will be considered covered by the CLA. To avoid delay, you should provide the Github account name(s) at the same time as the signed CLA. ARM reserves the right to not accept a contribution. This may be for technical, commercial or legal reasons. Getting Started --------------- * Make sure you have a [GitHub account]. * Create an [issue] for your work if one does not already exist. This gives everyone visibility of whether others are working on something similar. ARM licensees may contact ARM directly via their partner managers instead if they prefer. * Note that the [issue] tracker for this project is in a separate [issue tracking repository]. Please follow the guidelines in that repository. * 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. * [Fork][] [arm-trusted-firmware][] on GitHub. * Clone the fork to your own machine. * Create a local topic branch based on the [arm-trusted-firmware][] `master` branch. Making Changes -------------- * Make commits of logical units. See these general [Git guidelines] for contributing to a project. * Follow the [Linux coding style]; this style is enforced for the ARM Trusted Firmware project (style errors only, not warnings). * Use the checkpatch.pl script provided with the Linux source tree. A Makefile target is provided for convenience (see section 2 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 a GitHub [issue], include a reference (e.g. "fixes arm-software/tf-issues#45"); this ensures the [issue] is [automatically closed] when merged into the [arm-trusted-firmware] `master` branch. * Where appropriate, please update the documentation. * Consider whether the [User Guide] or [Porting Guide] need updating. * Changes that have a material impact on behavior or programming interfaces should have an entry at the end of the "[Detailed changes since last release]" section of the [Change Log]. Minor changes (e.g. basic refactoring or typo fixes) do not need an entry. * If this is your first contribution, you may add your name or your company name to the [Acknowledgements] 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 UEFI boots to the shell on the Foundation FVP. See the "[Running the software]" section of the [User Guide] for more information. Submitting Changes ------------------ * Ensure we have your signed CLA. * Push your local changes to your fork of the repository. * Submit a [pull request] to arm-trusted-firmware. * The changes in the pull request will then undergo further review and testing. Any review comments will be made as comments on the [pull request]. This may require you to do some rework. * When the changes are accepted, ARM will integrate them. * To ensure a linear commit history, ARM will typically rebase the commits locally before merging to the [arm-trusted-firmware] `master` branch. In this case, the [pull request] will be closed rather than directly merged on GitHub. If the rebase is not trivial, you may be asked to rebase the commits yourself. - - - - - - - - - - - - - - - - - - - - - - - - - - _Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved._ [Change Log]: ./docs/change-log.md [Detailed changes since last release]: ./docs/change-log.md#detailed-changes-since-last-release [User Guide]: ./docs/user-guide.md [Running the software]: ./docs/user-guide.md#running-the-software [Porting Guide]: ./docs/porting-guide.md [Acknowledgements]: ./acknowledgements.md "Contributor acknowledgements" [contributing page]: http://www.arm.com/community/open-source-contributing.php [GitHub account]: https://github.com/signup/free [Fork]: https://help.github.com/articles/fork-a-repo [issue tracking repository]: https://github.com/ARM-software/tf-issues [issue]: https://github.com/ARM-software/tf-issues/issues [pull request]: https://help.github.com/articles/using-pull-requests [automatically closed]: https://help.github.com/articles/closing-issues-via-commit-messages [Git guidelines]: http://git-scm.com/book/ch5-2.html [Linux coding style]: https://www.kernel.org/doc/Documentation/CodingStyle [arm-trusted-firmware]: https://github.com/ARM-software/arm-trusted-firmware