Licensing of Zephyr Project components

The Zephyr kernel tree imports or reuses packages, scripts and other files that are not covered by the Apache 2.0 License. In some places there is no LICENSE file or way to put a LICENSE file there, so we describe the licensing in this document.

Continuous Integration Scripts

• Origin: Linux Kernel

• Licensing: GPLv2 License

• Impact: These files are used in Continuous Integration (CI) and never linked into the firmware.

• Files:

  • scripts/checkpatch.pl

  • scripts/checkstack.pl

  • scripts/spelling.txt

Coccinelle Scripts

• Origin: Coccinelle

• Licensing: GPLv2 License

• Impact: These files are used by Coccinelle, a tool for transforming C-code, and never linked into the firmware.

• Files:

  • scripts/coccicheck

  • scripts/coccinelle/array_size.cocci

  • scripts/coccinelle/deref_null.cocci

  • scripts/coccinelle/deref_null.cocci

  • scripts/coccinelle/deref_null.cocci

  • scripts/coccinelle/mini_lock.cocci

  • scripts/coccinelle/mini_lock.cocci

  • scripts/coccinelle/mini_lock.cocci

  • scripts/coccinelle/noderef.cocci

  • scripts/coccinelle/noderef.cocci

  • scripts/coccinelle/returnvar.cocci

  • scripts/coccinelle/semicolon.cocci

GCOV Coverage Header File

• Origin: GCC, the GNU Compiler Collection

• Licensing: GPLv2 License with Runtime Library Exception

• Impact: This file is only linked into the firmware if CONFIG_COVERAGE_GCOV is enabled.

• Files:

  • subsys/testsuite/coverage/coverage.h

ENE KB1200_EVB Board OpenOCD Configuration

• Licensing: GPLv2 License

• Impact: This file is used by OpenOCD when programming and debugging the ENE KB1200_EVB board. It is never linked into the firmware.

• Files:

  • boards/ene/kb1200_evb/support/openocd.cfg

Thread-Metric RTOS Test Suite Source Files

• Origin: ThreadX

• Licensing: MIT License

• Impact: These files are only linked into the Thread-Metric RTOS Test Suite test firmware.

• Files:

  • tests/benchmarks/thread_metric/thread_metric_readme.txt

  • tests/benchmarks/thread_metric/src/tm_api.h

  • tests/benchmarks/thread_metric/src/tm_basic_processing_test.c

  • tests/benchmarks/thread_metric/src/tm_cooperative_scheduling_test.c

  • tests/benchmarks/thread_metric/src/tm_interrupt_preemption_processing_test.c

  • tests/benchmarks/thread_metric/src/tm_interrupt_processing_test.c

  • tests/benchmarks/thread_metric/src/tm_memory_allocation_test.c

  • tests/benchmarks/thread_metric/src/tm_message_processing_test.c

  • tests/benchmarks/thread_metric/src/tm_porting_layer.h

  • tests/benchmarks/thread_metric/src/tm_porting_layer_zephyr.c

  • tests/benchmarks/thread_metric/src/tm_preemptive_scheduling_test.c

  • tests/benchmarks/thread_metric/src/tm_synchronization_processing_test.c

OpenThread Spinel HDLC RCP Host Interface Files

• Origin: OpenThread

• Licensing: BSD-3-clause

• Impact: These files are only linked into the firmware if CONFIG_HDLC_RCP_IF is enabled.

• Files:

  • modules/openthread/platform/hdlc_interface.hpp

  • modules/openthread/platform/radio_spinel.cpp

  • modules/openthread/platform/hdlc_interface.cpp