15. License

The software is provided under a BSD-3-Clause license (below). Contributions to this project are accepted under the same license with developer sign-off as described in the Contributor’s Guide.

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

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

-  Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.

-  Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.

-  Neither the name of Arm nor the names of its contributors may be used to
endorse or promote products derived from this software without specific
prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

15.1. SPDX Identifiers

Individual files contain the following tag instead of the full license text.

SPDX-License-Identifier:    BSD-3-Clause

This enables machine processing of license information based on the SPDX License Identifiers that are here available: http://spdx.org/licenses/

15.2. Other Projects

This project contains code from other projects as listed below. The original license text is included in those source files.

  • The libc source code is derived from FreeBSD and SCC. FreeBSD uses various BSD licenses, including BSD-3-Clause and BSD-2-Clause. The SCC code is used under the BSD-3-Clause license with the author’s permission.

  • The libfdt source code is disjunctively dual licensed (GPL-2.0+ OR BSD-2-Clause). It is used by this project under the terms of the BSD-2-Clause license. Any contributions to this code must be made under the terms of both licenses.

  • The LLVM compiler-rt source code is disjunctively dual licensed (NCSA OR MIT). It is used by this project under the terms of the NCSA license (also known as the University of Illinois/NCSA Open Source License), which is a permissive license compatible with BSD-3-Clause. Any contributions to this code must be made under the terms of both licenses.

  • The zlib source code is licensed under the Zlib license, which is a permissive license compatible with BSD-3-Clause.

  • Some STMicroelectronics platform source code is disjunctively dual licensed (GPL-2.0+ OR BSD-3-Clause). It is used by this project under the terms of the BSD-3-Clause license. Any contributions to this code must be made under the terms of both licenses.

  • Some source files originating from the Linux source tree, which are disjunctively dual licensed (GPL-2.0 OR MIT), are redistributed under the terms of the MIT license. These files are:

    • include/dt-bindings/interrupt-controller/arm-gic.h

    • include/dt-bindings/interrupt-controller/irq.h

    See the original Linux MIT license.

  • Some source files originating from the Open Profile for DICE project. These files are licensed under the Apache License, Version 2.0, which is a permissive license compatible with BSD-3-Clause. Any contributions to this code must also be made under the terms of Apache License 2.0. These files are:

    • include/lib/dice/dice.h