Update license for p256-m

Signed-off-by: Dave Rodgman <[email protected]>

3rdparty/p256-m/README.md

@@ -1,4 +1,4 @@
-The files within the `p256-m/` subdirectory originate from the [p256-m GitHub repository](https://github.com/mpg/p256-m), which is distributed under the Apache 2.0 license. They are authored by Manuel Pégourié-Gonnard. p256-m is a minimalistic implementation of ECDH and ECDSA on NIST P-256, especially suited to constrained 32-bit environments. Mbed TLS documentation for integrating drivers uses p256-m as an example of a software accelerator, and describes how it can be integrated alongside Mbed TLS. It should be noted that p256-m files in the Mbed TLS repo will not be updated regularly, so they may not have fixes and improvements present in the upstream project.
+The files within the `p256-m/` subdirectory originate from the [p256-m GitHub repository](https://github.com/mpg/p256-m). They are distributed here under a dual Apache-2.0 OR GPL-2.0-or-later license. They are authored by Manuel Pégourié-Gonnard. p256-m is a minimalistic implementation of ECDH and ECDSA on NIST P-256, especially suited to constrained 32-bit environments. Mbed TLS documentation for integrating drivers uses p256-m as an example of a software accelerator, and describes how it can be integrated alongside Mbed TLS. It should be noted that p256-m files in the Mbed TLS repo will not be updated regularly, so they may not have fixes and improvements present in the upstream project.
 
-The files `p256-m.c` and `.h`, along with the license, have been taken from the `p256-m` repository.
+The files `p256-m.c`, `p256-m.h` and `README.md` have been taken from the `p256-m` repository.
 It should be noted that p256-m deliberately does not supply its own cryptographically secure RNG function. As a result, the PSA RNG is used, with `p256_generate_random()` wrapping `psa_generate_random()`.

3rdparty/p256-m/p256-m/p256-m.c

@@ -3,7 +3,7 @@
  *
  * Copyright The Mbed TLS Contributors
  * Author: Manuel Pégourié-Gonnard.
- * SPDX-License-Identifier: Apache-2.0
+ * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "p256-m.h"

3rdparty/p256-m/p256-m/p256-m.h

@@ -3,7 +3,7 @@
  *
  * Copyright The Mbed TLS Contributors
  * Author: Manuel Pégourié-Gonnard.
- * SPDX-License-Identifier: Apache-2.0
+ * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 #ifndef P256_M_H
 #define P256_M_H

3rdparty/p256-m/p256-m_driver_entrypoints.c

@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #include "mbedtls/platform.h"

3rdparty/p256-m/p256-m_driver_entrypoints.h

@@ -3,19 +3,7 @@
  */
 /*
  *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
+ *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
  */
 
 #ifndef P256M_DRIVER_ENTRYPOINTS_H

README.md

@@ -314,7 +314,7 @@ Unless specifically indicated otherwise in a file, Mbed TLS files are provided u
 This project contains code from other projects. This code is located within the `3rdparty/` directory. The original license text is included within project subdirectories, and in source files. The projects are listed below:
 
 * `3rdparty/everest/`: Files stem from [Project Everest](https://project-everest.github.io/) and are distributed under the Apache 2.0 license.
-* `3rdparty/p256-m/p256-m/`: Files have been taken from the [p256-m](https://github.com/mpg/p256-m) repository. The code in the original repository is distributed under the Apache 2.0 license. It is also used by Mbed TLS under the Apache 2.0 license. We do not plan to regularly update these files, so they may not contain fixes and improvements present in the upstream project.
+* `3rdparty/p256-m/p256-m/`: Files have been taken from the [p256-m](https://github.com/mpg/p256-m) repository. The code in the original repository is distributed under the Apache 2.0 license. It is distributed in Mbed TLS under a dual Apache-2.0 OR GPL-2.0-or-later license. We do not plan to regularly update these files, so they may not contain fixes and improvements present in the upstream project.
 
 Contributing
 ------------