license: Replace Apache boilerplate with SPDX tag

Replace the existing Apache 2.0 boilerplate header with an SPDX tag
throughout the zephyr code tree. This patch was generated via a
script run over the master branch.

Also updated doc/porting/application.rst that had a dependency on
line numbers in a literal include.

Manually updated subsys/logging/sys_log.c that had a malformed
header in the original file.  Also cleanup several cases that already
had a SPDX tag and we either got a duplicate or missed updating.

Jira: ZEP-1457

Change-Id: I6131a1d4ee0e58f5b938300c2d2fc77d2e69572c
Signed-off-by: David B. Kinder <david.b.kinder@intel.com>
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>

151 files changed, 151 insertions, 1661 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 034f3bc0b..a689848ab 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -3,17 +3,7 @@
 #
 # Copyright (c) 2014-2015 Wind River Systems, Inc.
 #
-# 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
 #
 
 choice
diff --git a/arch/arm/core/Kconfig b/arch/arm/core/Kconfig
index b4218443a..603171758 100644
--- a/arch/arm/core/Kconfig
+++ b/arch/arm/core/Kconfig
@@ -3,17 +3,7 @@
 #
 # Copyright (c) 2015 Wind River Systems, Inc.
 #
-# 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
 #
 
 config CPU_CORTEX
diff --git a/arch/arm/core/__aeabi_atexit.c b/arch/arm/core/__aeabi_atexit.c
index a2f8ad809..6ef0bdffb 100644
--- a/arch/arm/core/__aeabi_atexit.c
+++ b/arch/arm/core/__aeabi_atexit.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Wind River Systems, Inc.
  *
- * 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
  */
 
 /*
diff --git a/arch/arm/core/cortex_m/Kconfig b/arch/arm/core/cortex_m/Kconfig
index dc35cad40..df8ab1181 100644
--- a/arch/arm/core/cortex_m/Kconfig
+++ b/arch/arm/core/cortex_m/Kconfig
@@ -3,17 +3,7 @@
 #
 # Copyright (c) 2014-2015 Wind River Systems, Inc.
 #
-# 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
 #
 
 config ISA_THUMB2
diff --git a/arch/arm/core/cortex_m/exc_manage.c b/arch/arm/core/cortex_m/exc_manage.c
index 70df9568f..d42195770 100644
--- a/arch/arm/core/cortex_m/exc_manage.c
+++ b/arch/arm/core/cortex_m/exc_manage.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2015 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/core/cortex_m/irq_vector_table.c b/arch/arm/core/cortex_m/irq_vector_table.c
index 5f53773d5..25c3e1e8d 100644
--- a/arch/arm/core/cortex_m/irq_vector_table.c
+++ b/arch/arm/core/cortex_m/irq_vector_table.c
@@ -2,17 +2,7 @@
  * Copyright (c) 2016 Intel Corporation.
  * Copyright (c) 2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/core/cortex_m/nmi.c b/arch/arm/core/cortex_m/nmi.c
index 468fe3c8b..467e68af7 100644
--- a/arch/arm/core/cortex_m/nmi.c
+++ b/arch/arm/core/cortex_m/nmi.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2013-2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/core/cortex_m/nmi_on_reset.S b/arch/arm/core/cortex_m/nmi_on_reset.S
index 3e329a876..7df5bc93f 100644
--- a/arch/arm/core/cortex_m/nmi_on_reset.S
+++ b/arch/arm/core/cortex_m/nmi_on_reset.S
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2013-2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/core/cortex_m/prep_c.c b/arch/arm/core/cortex_m/prep_c.c
index 449d2be70..a476b367a 100644
--- a/arch/arm/core/cortex_m/prep_c.c
+++ b/arch/arm/core/cortex_m/prep_c.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2013-2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/core/cortex_m/reset.S b/arch/arm/core/cortex_m/reset.S
index d69f3d086..5c60f48a1 100644
--- a/arch/arm/core/cortex_m/reset.S
+++ b/arch/arm/core/cortex_m/reset.S
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2013-2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/core/cortex_m/scb.c b/arch/arm/core/cortex_m/scb.c
index 0e23d3a4c..1ce219a98 100644
--- a/arch/arm/core/cortex_m/scb.c
+++ b/arch/arm/core/cortex_m/scb.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2013-2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/core/cortex_m/scs.c b/arch/arm/core/cortex_m/scs.c
index f63ff8481..74d4bdf80 100644
--- a/arch/arm/core/cortex_m/scs.c
+++ b/arch/arm/core/cortex_m/scs.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2013-2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/core/cortex_m/sw_isr_table.S b/arch/arm/core/cortex_m/sw_isr_table.S
index 7e0818188..b440c37f3 100644
--- a/arch/arm/core/cortex_m/sw_isr_table.S
+++ b/arch/arm/core/cortex_m/sw_isr_table.S
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2015 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/core/cortex_m/vector_table.S b/arch/arm/core/cortex_m/vector_table.S
index ceff57798..ea5841213 100644
--- a/arch/arm/core/cortex_m/vector_table.S
+++ b/arch/arm/core/cortex_m/vector_table.S
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2013-2015 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/core/cortex_m/vector_table.h b/arch/arm/core/cortex_m/vector_table.h
index a8857e1ed..e07d90520 100644
--- a/arch/arm/core/cortex_m/vector_table.h
+++ b/arch/arm/core/cortex_m/vector_table.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2013-2015 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/core/cpu_idle.S b/arch/arm/core/cpu_idle.S
index 7f78e3049..0360bb8fa 100644
--- a/arch/arm/core/cpu_idle.S
+++ b/arch/arm/core/cpu_idle.S
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2013-2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/core/exc_exit.S b/arch/arm/core/exc_exit.S
index e02cd7bfc..faa00dfdc 100644
--- a/arch/arm/core/exc_exit.S
+++ b/arch/arm/core/exc_exit.S
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2013-2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/core/fatal.c b/arch/arm/core/fatal.c
index 2d784cf53..d5a230817 100644
--- a/arch/arm/core/fatal.c
+++ b/arch/arm/core/fatal.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/core/fault.c b/arch/arm/core/fault.c
index b5d60d7fb..60ca5a0c6 100644
--- a/arch/arm/core/fault.c
+++ b/arch/arm/core/fault.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/core/fault_s.S b/arch/arm/core/fault_s.S
index cdf064aa5..01748bcba 100644
--- a/arch/arm/core/fault_s.S
+++ b/arch/arm/core/fault_s.S
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2013-2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/core/irq_init.c b/arch/arm/core/irq_init.c
index 856c19685..b121c7f1a 100644
--- a/arch/arm/core/irq_init.c
+++ b/arch/arm/core/irq_init.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/core/irq_manage.c b/arch/arm/core/irq_manage.c
index 214913067..dbb645f6a 100644
--- a/arch/arm/core/irq_manage.c
+++ b/arch/arm/core/irq_manage.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2013-2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/core/irq_offload.c b/arch/arm/core/irq_offload.c
index 0236e3664..85ac49112 100644
--- a/arch/arm/core/irq_offload.c
+++ b/arch/arm/core/irq_offload.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2015 Intel corporation
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/core/isr_wrapper.S b/arch/arm/core/isr_wrapper.S
index 4eee9fb43..01cb9b032 100644
--- a/arch/arm/core/isr_wrapper.S
+++ b/arch/arm/core/isr_wrapper.S
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2013-2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/core/offsets/offsets.c b/arch/arm/core/offsets/offsets.c
index 18c89fe65..230e9ed55 100644
--- a/arch/arm/core/offsets/offsets.c
+++ b/arch/arm/core/offsets/offsets.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2013-2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/core/swap.S b/arch/arm/core/swap.S
index 93f18e0f2..dd0912546 100644
--- a/arch/arm/core/swap.S
+++ b/arch/arm/core/swap.S
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2013-2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/core/sys_fatal_error_handler.c b/arch/arm/core/sys_fatal_error_handler.c
index b9634f489..7ca627cb4 100644
--- a/arch/arm/core/sys_fatal_error_handler.c
+++ b/arch/arm/core/sys_fatal_error_handler.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/core/thread.c b/arch/arm/core/thread.c
index fdfd775f9..d01ada481 100644
--- a/arch/arm/core/thread.c
+++ b/arch/arm/core/thread.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2013-2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/core/thread_abort.c b/arch/arm/core/thread_abort.c
index 17c5e7c43..ec1a18e53 100644
--- a/arch/arm/core/thread_abort.c
+++ b/arch/arm/core/thread_abort.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/include/asm_inline.h b/arch/arm/include/asm_inline.h
index 4e64bd0cf..023a8e399 100644
--- a/arch/arm/include/asm_inline.h
+++ b/arch/arm/include/asm_inline.h
@@ -3,17 +3,7 @@
 /*
  * Copyright (c) 2015, Wind River Systems, Inc.
  *
- * 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
  */
 
 #ifndef _ASM_INLINE_H
diff --git a/arch/arm/include/cortex_m/asm_inline_gcc.h b/arch/arm/include/cortex_m/asm_inline_gcc.h
index 3c74d7e7b..19494f1a8 100644
--- a/arch/arm/include/cortex_m/asm_inline_gcc.h
+++ b/arch/arm/include/cortex_m/asm_inline_gcc.h
@@ -3,17 +3,7 @@
 /*
  * Copyright (c) 2015, Wind River Systems, Inc.
  *
- * 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
  */
 
 #ifndef _ASM_INLINE_GCC_H
diff --git a/arch/arm/include/cortex_m/exc.h b/arch/arm/include/cortex_m/exc.h
index 5d030aeb7..ab25ebd77 100644
--- a/arch/arm/include/cortex_m/exc.h
+++ b/arch/arm/include/cortex_m/exc.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2013-2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/include/cortex_m/stack.h b/arch/arm/include/cortex_m/stack.h
index f0396d58c..266b25e8e 100644
--- a/arch/arm/include/cortex_m/stack.h
+++ b/arch/arm/include/cortex_m/stack.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2013-2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/include/kernel_arch_data.h b/arch/arm/include/kernel_arch_data.h
index 4863ecb41..763d03c41 100644
--- a/arch/arm/include/kernel_arch_data.h
+++ b/arch/arm/include/kernel_arch_data.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2013-2016 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/include/kernel_arch_func.h b/arch/arm/include/kernel_arch_func.h
index 965c6eb0a..fea2aa9e2 100644
--- a/arch/arm/include/kernel_arch_func.h
+++ b/arch/arm/include/kernel_arch_func.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2013-2016 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/include/kernel_event_logger_arch.h b/arch/arm/include/kernel_event_logger_arch.h
index 01ac3d970..6444812e5 100644
--- a/arch/arm/include/kernel_event_logger_arch.h
+++ b/arch/arm/include/kernel_event_logger_arch.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2015 Intel Corporation
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/include/offsets_short_arch.h b/arch/arm/include/offsets_short_arch.h
index 983d06938..fa1634892 100644
--- a/arch/arm/include/offsets_short_arch.h
+++ b/arch/arm/include/offsets_short_arch.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Wind River Systems, Inc.
  *
- * 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
  */
 
 #ifndef _offsets_short_arch__h_
diff --git a/arch/arm/soc/arm/Kbuild b/arch/arm/soc/arm/Kbuild
index 3cb15c7e0..efd8af8e6 100644
--- a/arch/arm/soc/arm/Kbuild
+++ b/arch/arm/soc/arm/Kbuild
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Linaro Limited
 #
-# 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
 #
 
 obj-y += $(SOC_SERIES)/
diff --git a/arch/arm/soc/arm/Kconfig b/arch/arm/soc/arm/Kconfig
index d7177864a..77cb98d51 100644
--- a/arch/arm/soc/arm/Kconfig
+++ b/arch/arm/soc/arm/Kconfig
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Linaro Limited
 #
-# 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
 #
 
 config SOC_FAMILY_ARM
diff --git a/arch/arm/soc/arm/Kconfig.defconfig b/arch/arm/soc/arm/Kconfig.defconfig
index a2b2494ce..765ebbcb4 100644
--- a/arch/arm/soc/arm/Kconfig.defconfig
+++ b/arch/arm/soc/arm/Kconfig.defconfig
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Linaro Limited
 #
-# 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
 #
 
 source "arch/arm/soc/arm/*/Kconfig.defconfig.series"
diff --git a/arch/arm/soc/arm/Kconfig.soc b/arch/arm/soc/arm/Kconfig.soc
index 9c8e69bf6..649d83501 100644
--- a/arch/arm/soc/arm/Kconfig.soc
+++ b/arch/arm/soc/arm/Kconfig.soc
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Linaro Limited
 #
-# 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
 #
 
 source "arch/arm/soc/arm/*/Kconfig.series"
diff --git a/arch/arm/soc/arm/beetle/Kconfig.defconfig.beetle_r0 b/arch/arm/soc/arm/beetle/Kconfig.defconfig.beetle_r0
index 126161de7..7134510ae 100644
--- a/arch/arm/soc/arm/beetle/Kconfig.defconfig.beetle_r0
+++ b/arch/arm/soc/arm/beetle/Kconfig.defconfig.beetle_r0
@@ -3,17 +3,7 @@
 #
 # Copyright (c) 2016 Linaro Limited
 #
-# 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
 #
 
 if SOC_BEETLE_R0
diff --git a/arch/arm/soc/arm/beetle/Kconfig.defconfig.series b/arch/arm/soc/arm/beetle/Kconfig.defconfig.series
index 726ad2de7..1df64539c 100644
--- a/arch/arm/soc/arm/beetle/Kconfig.defconfig.series
+++ b/arch/arm/soc/arm/beetle/Kconfig.defconfig.series
@@ -3,17 +3,7 @@
 #
 # Copyright (c) 2016 Linaro Limited
 #
-# 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
 #
 
 if SOC_SERIES_BEETLE
diff --git a/arch/arm/soc/arm/beetle/Kconfig.series b/arch/arm/soc/arm/beetle/Kconfig.series
index 6d5d4c826..ecd754c81 100644
--- a/arch/arm/soc/arm/beetle/Kconfig.series
+++ b/arch/arm/soc/arm/beetle/Kconfig.series
@@ -3,17 +3,7 @@
 #
 # Copyright (c) 2016 Linaro Limited
 #
-# 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
 #
 
 config SOC_SERIES_BEETLE
diff --git a/arch/arm/soc/arm/beetle/Kconfig.soc b/arch/arm/soc/arm/beetle/Kconfig.soc
index 45f79db38..7972d329e 100644
--- a/arch/arm/soc/arm/beetle/Kconfig.soc
+++ b/arch/arm/soc/arm/beetle/Kconfig.soc
@@ -3,17 +3,7 @@
 #
 # Copyright (c) 2016 Linaro Limited
 #
-# 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
 #
 
 choice
diff --git a/arch/arm/soc/arm/beetle/Makefile b/arch/arm/soc/arm/beetle/Makefile
index c13e1effb..d53ee3b08 100644
--- a/arch/arm/soc/arm/beetle/Makefile
+++ b/arch/arm/soc/arm/beetle/Makefile
@@ -3,17 +3,7 @@
 #
 # Copyright (c) 2016 Linaro Limited
 #
-# 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
 #
 
 obj-y += soc.o power.o
diff --git a/arch/arm/soc/arm/beetle/linker.ld b/arch/arm/soc/arm/beetle/linker.ld
index cf2cfad59..b6ccb0279 100644
--- a/arch/arm/soc/arm/beetle/linker.ld
+++ b/arch/arm/soc/arm/beetle/linker.ld
@@ -3,17 +3,7 @@
 /*
  * Copyright (c) 2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 #include <arch/arm/cortex_m/scripts/linker.ld>
diff --git a/arch/arm/soc/arm/beetle/power.c b/arch/arm/soc/arm/beetle/power.c
index d12c82e44..612161027 100644
--- a/arch/arm/soc/arm/beetle/power.c
+++ b/arch/arm/soc/arm/beetle/power.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Linaro Limited.
  *
- * 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
  */
 
 #include <device.h>
diff --git a/arch/arm/soc/arm/beetle/soc.c b/arch/arm/soc/arm/beetle/soc.c
index 950a0e464..d52c00c77 100644
--- a/arch/arm/soc/arm/beetle/soc.c
+++ b/arch/arm/soc/arm/beetle/soc.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Linaro Limited.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/arm/beetle/soc.h b/arch/arm/soc/arm/beetle/soc.h
index 3b572b7ac..927ebe8a8 100644
--- a/arch/arm/soc/arm/beetle/soc.h
+++ b/arch/arm/soc/arm/beetle/soc.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Linaro Limited.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/arm/beetle/soc_irq.h b/arch/arm/soc/arm/beetle/soc_irq.h
index 0f60dc6f5..e5efc9c6e 100644
--- a/arch/arm/soc/arm/beetle/soc_irq.h
+++ b/arch/arm/soc/arm/beetle/soc_irq.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Linaro Limited.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/arm/beetle/soc_pins.h b/arch/arm/soc/arm/beetle/soc_pins.h
index 403ff2160..ed2a5c46d 100644
--- a/arch/arm/soc/arm/beetle/soc_pins.h
+++ b/arch/arm/soc/arm/beetle/soc_pins.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Linaro Limited.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/arm/beetle/soc_pll.h b/arch/arm/soc/arm/beetle/soc_pll.h
index ff18ea1e2..c420171a6 100644
--- a/arch/arm/soc/arm/beetle/soc_pll.h
+++ b/arch/arm/soc/arm/beetle/soc_pll.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Linaro Limited.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/arm/beetle/soc_power.h b/arch/arm/soc/arm/beetle/soc_power.h
index 0eb884b2a..64d68f24b 100644
--- a/arch/arm/soc/arm/beetle/soc_power.h
+++ b/arch/arm/soc/arm/beetle/soc_power.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Linaro Limited.
  *
- * 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
  */
 
 #ifndef _SOC_POWER_H_
diff --git a/arch/arm/soc/arm/beetle/soc_registers.h b/arch/arm/soc/arm/beetle/soc_registers.h
index 2cd99599d..269f397da 100644
--- a/arch/arm/soc/arm/beetle/soc_registers.h
+++ b/arch/arm/soc/arm/beetle/soc_registers.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Linaro Limited.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/atmel_sam3/Kconfig b/arch/arm/soc/atmel_sam3/Kconfig
index 2563cc5be..2164cda3e 100644
--- a/arch/arm/soc/atmel_sam3/Kconfig
+++ b/arch/arm/soc/atmel_sam3/Kconfig
@@ -4,17 +4,7 @@
 # Copyright (c) 2016 Intel Corporation.
 # Copyright (c) 2014-2015 Wind River Systems, Inc.
 #
-# 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
 #
 
 config SOC_ATMEL_SAM3
diff --git a/arch/arm/soc/atmel_sam3/Kconfig.defconfig b/arch/arm/soc/atmel_sam3/Kconfig.defconfig
index de9d486ce..3ba839cb2 100644
--- a/arch/arm/soc/atmel_sam3/Kconfig.defconfig
+++ b/arch/arm/soc/atmel_sam3/Kconfig.defconfig
@@ -4,17 +4,7 @@
 # Copyright (c) 2016 Intel Corporation.
 # Copyright (c) 2014-2015 Wind River Systems, Inc.
 #
-# 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
 #
 
 if SOC_ATMEL_SAM3
diff --git a/arch/arm/soc/atmel_sam3/linker.ld b/arch/arm/soc/atmel_sam3/linker.ld
index cf2cfad59..b6ccb0279 100644
--- a/arch/arm/soc/atmel_sam3/linker.ld
+++ b/arch/arm/soc/atmel_sam3/linker.ld
@@ -3,17 +3,7 @@
 /*
  * Copyright (c) 2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 #include <arch/arm/cortex_m/scripts/linker.ld>
diff --git a/arch/arm/soc/atmel_sam3/soc.c b/arch/arm/soc/atmel_sam3/soc.c
index 0620b0834..879f37684 100644
--- a/arch/arm/soc/atmel_sam3/soc.c
+++ b/arch/arm/soc/atmel_sam3/soc.c
@@ -2,17 +2,7 @@
  * Copyright (c) 2016 Intel Corporation.
  * Copyright (c) 2013-2015 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/atmel_sam3/soc.h b/arch/arm/soc/atmel_sam3/soc.h
index 767ab7b24..39945d13b 100644
--- a/arch/arm/soc/atmel_sam3/soc.h
+++ b/arch/arm/soc/atmel_sam3/soc.h
@@ -2,17 +2,7 @@
  * Copyright (c) 2016 Intel Corporation.
  * Copyright (c) 2013-2015 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/atmel_sam3/soc_registers.h b/arch/arm/soc/atmel_sam3/soc_registers.h
index 9f9db1c81..e86c9a5fa 100644
--- a/arch/arm/soc/atmel_sam3/soc_registers.h
+++ b/arch/arm/soc/atmel_sam3/soc_registers.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Intel Corporation.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/nordic_nrf5/Kconfig b/arch/arm/soc/nordic_nrf5/Kconfig
index dbac02d7e..170e7eb11 100644
--- a/arch/arm/soc/nordic_nrf5/Kconfig
+++ b/arch/arm/soc/nordic_nrf5/Kconfig
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Nordic Semiconductor ASA
 #
-# 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
 #
 
 config SOC_FAMILY_NRF5
diff --git a/arch/arm/soc/nordic_nrf5/Kconfig.defconfig b/arch/arm/soc/nordic_nrf5/Kconfig.defconfig
index abd46a0c2..de0030fc1 100644
--- a/arch/arm/soc/nordic_nrf5/Kconfig.defconfig
+++ b/arch/arm/soc/nordic_nrf5/Kconfig.defconfig
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Nordic Semiconductor ASA
 #
-# 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
 #
 
 if SOC_FAMILY_NRF5
diff --git a/arch/arm/soc/nordic_nrf5/Kconfig.soc b/arch/arm/soc/nordic_nrf5/Kconfig.soc
index 922a486f4..e3dee7460 100644
--- a/arch/arm/soc/nordic_nrf5/Kconfig.soc
+++ b/arch/arm/soc/nordic_nrf5/Kconfig.soc
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Nordic Semiconductor ASA
 #
-# 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
 #
 
 source "arch/arm/soc/nordic_nrf5/*/Kconfig.series"
diff --git a/arch/arm/soc/nordic_nrf5/include/nrf5_common.h b/arch/arm/soc/nordic_nrf5/include/nrf5_common.h
index 067705665..e4fe64745 100644
--- a/arch/arm/soc/nordic_nrf5/include/nrf5_common.h
+++ b/arch/arm/soc/nordic_nrf5/include/nrf5_common.h
@@ -2,17 +2,7 @@
  * Copyright (c) 2016 Linaro Ltd.
  * Copyright (c) 2016 Nordic Semiconductor ASA
  *
- * 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
  */
 
 #ifndef _NRF5_SOC_COMMON_H_
diff --git a/arch/arm/soc/nordic_nrf5/nrf51/Kconfig.defconfig.nrf51822_QFAA b/arch/arm/soc/nordic_nrf5/nrf51/Kconfig.defconfig.nrf51822_QFAA
index e1e031ab7..706c756fc 100644
--- a/arch/arm/soc/nordic_nrf5/nrf51/Kconfig.defconfig.nrf51822_QFAA
+++ b/arch/arm/soc/nordic_nrf5/nrf51/Kconfig.defconfig.nrf51822_QFAA
@@ -3,17 +3,7 @@
 # Copyright (c) 2016 Linaro Limited
 # Copyright (c) 2016 Nordic Semiconductor ASA
 #
-# 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
 #
 
 if SOC_NRF51822_QFAA
diff --git a/arch/arm/soc/nordic_nrf5/nrf51/Kconfig.defconfig.nrf51822_QFAB b/arch/arm/soc/nordic_nrf5/nrf51/Kconfig.defconfig.nrf51822_QFAB
index be53d0c6e..e3476627a 100644
--- a/arch/arm/soc/nordic_nrf5/nrf51/Kconfig.defconfig.nrf51822_QFAB
+++ b/arch/arm/soc/nordic_nrf5/nrf51/Kconfig.defconfig.nrf51822_QFAB
@@ -3,17 +3,7 @@
 # Copyright (c) 2016 Linaro Limited
 # Copyright (c) 2016 Nordic Semiconductor ASA
 #
-# 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
 #
 
 if SOC_NRF51822_QFAB
diff --git a/arch/arm/soc/nordic_nrf5/nrf51/Kconfig.defconfig.nrf51822_QFAC b/arch/arm/soc/nordic_nrf5/nrf51/Kconfig.defconfig.nrf51822_QFAC
index 9ac707a8b..5e6694457 100644
--- a/arch/arm/soc/nordic_nrf5/nrf51/Kconfig.defconfig.nrf51822_QFAC
+++ b/arch/arm/soc/nordic_nrf5/nrf51/Kconfig.defconfig.nrf51822_QFAC
@@ -3,17 +3,7 @@
 # Copyright (c) 2016 Linaro Limited
 # Copyright (c) 2016 Nordic Semiconductor ASA
 #
-# 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
 #
 
 if SOC_NRF51822_QFAC
diff --git a/arch/arm/soc/nordic_nrf5/nrf51/Kconfig.defconfig.series b/arch/arm/soc/nordic_nrf5/nrf51/Kconfig.defconfig.series
index 121b46cf4..bf697eb5d 100644
--- a/arch/arm/soc/nordic_nrf5/nrf51/Kconfig.defconfig.series
+++ b/arch/arm/soc/nordic_nrf5/nrf51/Kconfig.defconfig.series
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Linaro Limited
 #
-# 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
 #
 
 if SOC_SERIES_NRF51X
diff --git a/arch/arm/soc/nordic_nrf5/nrf51/Kconfig.series b/arch/arm/soc/nordic_nrf5/nrf51/Kconfig.series
index 9eb44d7af..f4b2d2dc5 100644
--- a/arch/arm/soc/nordic_nrf5/nrf51/Kconfig.series
+++ b/arch/arm/soc/nordic_nrf5/nrf51/Kconfig.series
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Linaro Limited
 #
-# 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
 #
 
 config  SOC_SERIES_NRF51X
diff --git a/arch/arm/soc/nordic_nrf5/nrf51/Kconfig.soc b/arch/arm/soc/nordic_nrf5/nrf51/Kconfig.soc
index 70d9bf84d..ee9ab37e8 100644
--- a/arch/arm/soc/nordic_nrf5/nrf51/Kconfig.soc
+++ b/arch/arm/soc/nordic_nrf5/nrf51/Kconfig.soc
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Linaro Limited
 #
-# 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
 #
 
 choice
diff --git a/arch/arm/soc/nordic_nrf5/nrf51/linker.ld b/arch/arm/soc/nordic_nrf5/nrf51/linker.ld
index cf2cfad59..b6ccb0279 100644
--- a/arch/arm/soc/nordic_nrf5/nrf51/linker.ld
+++ b/arch/arm/soc/nordic_nrf5/nrf51/linker.ld
@@ -3,17 +3,7 @@
 /*
  * Copyright (c) 2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 #include <arch/arm/cortex_m/scripts/linker.ld>
diff --git a/arch/arm/soc/nordic_nrf5/nrf51/soc.c b/arch/arm/soc/nordic_nrf5/nrf51/soc.c
index cea06efea..d3ff5e085 100644
--- a/arch/arm/soc/nordic_nrf5/nrf51/soc.c
+++ b/arch/arm/soc/nordic_nrf5/nrf51/soc.c
@@ -2,17 +2,7 @@
  * Copyright (c) 2016 Nordic Semiconductor ASA
  * Copyright (c) 2016 Linaro Limited
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/nordic_nrf5/nrf51/soc.h b/arch/arm/soc/nordic_nrf5/nrf51/soc.h
index c721c7489..80589fcba 100644
--- a/arch/arm/soc/nordic_nrf5/nrf51/soc.h
+++ b/arch/arm/soc/nordic_nrf5/nrf51/soc.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Linaro Limited
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/nordic_nrf5/nrf52/Kconfig.defconfig.nrf52832 b/arch/arm/soc/nordic_nrf5/nrf52/Kconfig.defconfig.nrf52832
index 4e59583d1..29f66eaf0 100644
--- a/arch/arm/soc/nordic_nrf5/nrf52/Kconfig.defconfig.nrf52832
+++ b/arch/arm/soc/nordic_nrf5/nrf52/Kconfig.defconfig.nrf52832
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Nordic Semiconductor ASA
 #
-# 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
 #
 
 
diff --git a/arch/arm/soc/nordic_nrf5/nrf52/Kconfig.defconfig.nrf52840 b/arch/arm/soc/nordic_nrf5/nrf52/Kconfig.defconfig.nrf52840
index 11a45a5d0..d88047753 100644
--- a/arch/arm/soc/nordic_nrf5/nrf52/Kconfig.defconfig.nrf52840
+++ b/arch/arm/soc/nordic_nrf5/nrf52/Kconfig.defconfig.nrf52840
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Nordic Semiconductor ASA
 #
-# 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
 #
 
 
diff --git a/arch/arm/soc/nordic_nrf5/nrf52/Kconfig.defconfig.series b/arch/arm/soc/nordic_nrf5/nrf52/Kconfig.defconfig.series
index ad4354c34..e92bef896 100644
--- a/arch/arm/soc/nordic_nrf5/nrf52/Kconfig.defconfig.series
+++ b/arch/arm/soc/nordic_nrf5/nrf52/Kconfig.defconfig.series
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Nordic Semiconductor ASA
 #
-# 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
 #
 
 if SOC_SERIES_NRF52X
diff --git a/arch/arm/soc/nordic_nrf5/nrf52/Kconfig.series b/arch/arm/soc/nordic_nrf5/nrf52/Kconfig.series
index 103c6010f..02fc3a0f9 100644
--- a/arch/arm/soc/nordic_nrf5/nrf52/Kconfig.series
+++ b/arch/arm/soc/nordic_nrf5/nrf52/Kconfig.series
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Nordic Semiconductor ASA
 #
-# 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
 #
 
 config  SOC_SERIES_NRF52X
diff --git a/arch/arm/soc/nordic_nrf5/nrf52/Kconfig.soc b/arch/arm/soc/nordic_nrf5/nrf52/Kconfig.soc
index 5caec5dfb..1a36ae8e1 100644
--- a/arch/arm/soc/nordic_nrf5/nrf52/Kconfig.soc
+++ b/arch/arm/soc/nordic_nrf5/nrf52/Kconfig.soc
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Nordic Semiconductor ASA
 #
-# 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
 #
 
 choice
diff --git a/arch/arm/soc/nordic_nrf5/nrf52/linker.ld b/arch/arm/soc/nordic_nrf5/nrf52/linker.ld
index cf2cfad59..b6ccb0279 100644
--- a/arch/arm/soc/nordic_nrf5/nrf52/linker.ld
+++ b/arch/arm/soc/nordic_nrf5/nrf52/linker.ld
@@ -3,17 +3,7 @@
 /*
  * Copyright (c) 2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 #include <arch/arm/cortex_m/scripts/linker.ld>
diff --git a/arch/arm/soc/nordic_nrf5/nrf52/soc.c b/arch/arm/soc/nordic_nrf5/nrf52/soc.c
index d0a9afc40..5fa74e6f8 100644
--- a/arch/arm/soc/nordic_nrf5/nrf52/soc.c
+++ b/arch/arm/soc/nordic_nrf5/nrf52/soc.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Nordic Semiconductor ASA
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/nordic_nrf5/nrf52/soc.h b/arch/arm/soc/nordic_nrf5/nrf52/soc.h
index 62fb92c13..bfd16e8e9 100644
--- a/arch/arm/soc/nordic_nrf5/nrf52/soc.h
+++ b/arch/arm/soc/nordic_nrf5/nrf52/soc.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Nordic Semiconductor ASA
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/nxp_kinetis/Kconfig b/arch/arm/soc/nxp_kinetis/Kconfig
index ebb7abd6c..c0b01b56d 100644
--- a/arch/arm/soc/nxp_kinetis/Kconfig
+++ b/arch/arm/soc/nxp_kinetis/Kconfig
@@ -2,17 +2,7 @@
 # Copyright (c) 2016 Intel Corporation
 # Copyright (c) 2016, Freescale Semiconductor, Inc.
 #
-# 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
 #
 
 config SOC_FAMILY_KINETIS
diff --git a/arch/arm/soc/nxp_kinetis/Kconfig.soc b/arch/arm/soc/nxp_kinetis/Kconfig.soc
index fc01277ca..31cadb612 100644
--- a/arch/arm/soc/nxp_kinetis/Kconfig.soc
+++ b/arch/arm/soc/nxp_kinetis/Kconfig.soc
@@ -1,17 +1,7 @@
 #
 # Copyright (c) 2016 Intel Corporation
 #
-# 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
 #
 
 source "arch/arm/soc/nxp_kinetis/*/Kconfig.series"
diff --git a/arch/arm/soc/nxp_kinetis/k6x/Kconfig.defconfig.mk64f12 b/arch/arm/soc/nxp_kinetis/k6x/Kconfig.defconfig.mk64f12
index a86e54e35..edaea08ad 100644
--- a/arch/arm/soc/nxp_kinetis/k6x/Kconfig.defconfig.mk64f12
+++ b/arch/arm/soc/nxp_kinetis/k6x/Kconfig.defconfig.mk64f12
@@ -3,17 +3,7 @@
 #
 # Copyright (c) 2014-2016 Wind River Systems, Inc.
 #
-# 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
 #
 
 if SOC_MK64F12
diff --git a/arch/arm/soc/nxp_kinetis/k6x/Kconfig.defconfig.series b/arch/arm/soc/nxp_kinetis/k6x/Kconfig.defconfig.series
index 17fbd0e8e..7cb1e414b 100644
--- a/arch/arm/soc/nxp_kinetis/k6x/Kconfig.defconfig.series
+++ b/arch/arm/soc/nxp_kinetis/k6x/Kconfig.defconfig.series
@@ -3,17 +3,7 @@
 #
 # Copyright (c) 2014-2016 Wind River Systems, Inc.
 #
-# 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
 #
 
 if SOC_SERIES_KINETIS_K6X
diff --git a/arch/arm/soc/nxp_kinetis/k6x/Kconfig.series b/arch/arm/soc/nxp_kinetis/k6x/Kconfig.series
index 4d05064ca..74e0aed25 100644
--- a/arch/arm/soc/nxp_kinetis/k6x/Kconfig.series
+++ b/arch/arm/soc/nxp_kinetis/k6x/Kconfig.series
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Open-RnD Sp. z o.o.
 #
-# 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
 #
 
 config SOC_SERIES_KINETIS_K6X
diff --git a/arch/arm/soc/nxp_kinetis/k6x/Kconfig.soc b/arch/arm/soc/nxp_kinetis/k6x/Kconfig.soc
index afa068b16..1c948d7ed 100644
--- a/arch/arm/soc/nxp_kinetis/k6x/Kconfig.soc
+++ b/arch/arm/soc/nxp_kinetis/k6x/Kconfig.soc
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Open-RnD Sp. z o.o.
 #
-# 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
 #
 
 choice
diff --git a/arch/arm/soc/nxp_kinetis/k6x/linker.ld b/arch/arm/soc/nxp_kinetis/k6x/linker.ld
index 19cee853e..a7fbabf81 100644
--- a/arch/arm/soc/nxp_kinetis/k6x/linker.ld
+++ b/arch/arm/soc/nxp_kinetis/k6x/linker.ld
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/nxp_kinetis/k6x/soc.c b/arch/arm/soc/nxp_kinetis/k6x/soc.c
index 889072edf..d0f0da439 100644
--- a/arch/arm/soc/nxp_kinetis/k6x/soc.c
+++ b/arch/arm/soc/nxp_kinetis/k6x/soc.c
@@ -2,17 +2,7 @@
  * Copyright (c) 2014-2015 Wind River Systems, Inc.
  * Copyright (c) 2016, Freescale Semiconductor, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/nxp_kinetis/k6x/soc.h b/arch/arm/soc/nxp_kinetis/k6x/soc.h
index 6fc7df961..ab9cab3f2 100644
--- a/arch/arm/soc/nxp_kinetis/k6x/soc.h
+++ b/arch/arm/soc/nxp_kinetis/k6x/soc.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2014-2015 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/nxp_kinetis/k6x/soc_config.c b/arch/arm/soc/nxp_kinetis/k6x/soc_config.c
index 0ef7313e8..e97c7c9ed 100644
--- a/arch/arm/soc/nxp_kinetis/k6x/soc_config.c
+++ b/arch/arm/soc/nxp_kinetis/k6x/soc_config.c
@@ -2,17 +2,7 @@
  * Copyright (c) 2015 Intel Corporation.
  * Copyright (c) 2016, Freescale Semiconductor, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/nxp_kinetis/k6x/wdog.S b/arch/arm/soc/nxp_kinetis/k6x/wdog.S
index 9b52fd1c0..56db54658 100644
--- a/arch/arm/soc/nxp_kinetis/k6x/wdog.S
+++ b/arch/arm/soc/nxp_kinetis/k6x/wdog.S
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/st_stm32/Kconfig b/arch/arm/soc/st_stm32/Kconfig
index d73229f3b..62fa8c1d3 100644
--- a/arch/arm/soc/st_stm32/Kconfig
+++ b/arch/arm/soc/st_stm32/Kconfig
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Open-RnD Sp. z o.o.
 #
-# 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
 #
 
 config SOC_FAMILY_STM32
diff --git a/arch/arm/soc/st_stm32/Kconfig.soc b/arch/arm/soc/st_stm32/Kconfig.soc
index 96538fd13..5f2c10840 100644
--- a/arch/arm/soc/st_stm32/Kconfig.soc
+++ b/arch/arm/soc/st_stm32/Kconfig.soc
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Open-RnD Sp. z o.o.
 #
-# 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
 #
 
 source "arch/arm/soc/st_stm32/*/Kconfig.series"
diff --git a/arch/arm/soc/st_stm32/stm32f1/Kconfig.defconfig.series b/arch/arm/soc/st_stm32/stm32f1/Kconfig.defconfig.series
index fc6d05e60..af58ae25a 100644
--- a/arch/arm/soc/st_stm32/stm32f1/Kconfig.defconfig.series
+++ b/arch/arm/soc/st_stm32/stm32f1/Kconfig.defconfig.series
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Open-RnD Sp. z o.o.
 #
-# 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
 #
 
 if SOC_SERIES_STM32F1X
diff --git a/arch/arm/soc/st_stm32/stm32f1/Kconfig.defconfig.stm32f103xb b/arch/arm/soc/st_stm32/stm32f1/Kconfig.defconfig.stm32f103xb
index 32c6ebe14..214379887 100644
--- a/arch/arm/soc/st_stm32/stm32f1/Kconfig.defconfig.stm32f103xb
+++ b/arch/arm/soc/st_stm32/stm32f1/Kconfig.defconfig.stm32f103xb
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Open-RnD Sp. z o.o.
 #
-# 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
 #
 
 if SOC_STM32F103XB
diff --git a/arch/arm/soc/st_stm32/stm32f1/Kconfig.defconfig.stm32f103xe b/arch/arm/soc/st_stm32/stm32f1/Kconfig.defconfig.stm32f103xe
index 41fccecc4..4ecf2f5ec 100644
--- a/arch/arm/soc/st_stm32/stm32f1/Kconfig.defconfig.stm32f103xe
+++ b/arch/arm/soc/st_stm32/stm32f1/Kconfig.defconfig.stm32f103xe
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Open-RnD Sp. z o.o.
 #
-# 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
 #
 
 if SOC_STM32F103XE
diff --git a/arch/arm/soc/st_stm32/stm32f1/Kconfig.defconfig.stm32f107xc b/arch/arm/soc/st_stm32/stm32f1/Kconfig.defconfig.stm32f107xc
index 7aa0c56b2..28b88abd7 100644
--- a/arch/arm/soc/st_stm32/stm32f1/Kconfig.defconfig.stm32f107xc
+++ b/arch/arm/soc/st_stm32/stm32f1/Kconfig.defconfig.stm32f107xc
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 RnDity Sp. z o.o.
 #
-# 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
 #
 
 if SOC_STM32F107XC
diff --git a/arch/arm/soc/st_stm32/stm32f1/Kconfig.series b/arch/arm/soc/st_stm32/stm32f1/Kconfig.series
index a212723ea..ec21a87a3 100644
--- a/arch/arm/soc/st_stm32/stm32f1/Kconfig.series
+++ b/arch/arm/soc/st_stm32/stm32f1/Kconfig.series
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Open-RnD Sp. z o.o.
 #
-# 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
 #
 
 config SOC_SERIES_STM32F1X
diff --git a/arch/arm/soc/st_stm32/stm32f1/Kconfig.soc b/arch/arm/soc/st_stm32/stm32f1/Kconfig.soc
index f307369e9..d1648357a 100644
--- a/arch/arm/soc/st_stm32/stm32f1/Kconfig.soc
+++ b/arch/arm/soc/st_stm32/stm32f1/Kconfig.soc
@@ -3,17 +3,7 @@
 # Copyright (c) 2016 Open-RnD Sp. z o.o.
 # Copyright (c) RnDity Sp. z o.o.
 #
-# 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
 #
 
 choice
diff --git a/arch/arm/soc/st_stm32/stm32f1/flash_registers.h b/arch/arm/soc/st_stm32/stm32f1/flash_registers.h
index 8f1b5021e..276e23e70 100644
--- a/arch/arm/soc/st_stm32/stm32f1/flash_registers.h
+++ b/arch/arm/soc/st_stm32/stm32f1/flash_registers.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Open-RnD Sp. z o.o.
  *
- * 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
  */
 
 #ifndef _STM32F10X_FLASH_REGISTERS_H_
diff --git a/arch/arm/soc/st_stm32/stm32f1/gpio_registers.h b/arch/arm/soc/st_stm32/stm32f1/gpio_registers.h
index 82dae1f57..48d4f4b46 100644
--- a/arch/arm/soc/st_stm32/stm32f1/gpio_registers.h
+++ b/arch/arm/soc/st_stm32/stm32f1/gpio_registers.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Open-RnD Sp. z o.o.
  *
- * 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
  */
 
 #ifndef _STM32F10X_GPIO_REGISTERS_H_
diff --git a/arch/arm/soc/st_stm32/stm32f1/linker.ld b/arch/arm/soc/st_stm32/stm32f1/linker.ld
index 220d80cc1..ba0abaf50 100644
--- a/arch/arm/soc/st_stm32/stm32f1/linker.ld
+++ b/arch/arm/soc/st_stm32/stm32f1/linker.ld
@@ -3,17 +3,7 @@
 /*
  * Copyright (c) 2014-2016 Wind River Systems, Inc.
  *
- * 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
  */
 
 #include <arch/arm/cortex_m/scripts/linker.ld>
diff --git a/arch/arm/soc/st_stm32/stm32f1/rcc_registers.h b/arch/arm/soc/st_stm32/stm32f1/rcc_registers.h
index 90f2d81ba..b4e0d563a 100644
--- a/arch/arm/soc/st_stm32/stm32f1/rcc_registers.h
+++ b/arch/arm/soc/st_stm32/stm32f1/rcc_registers.h
@@ -2,17 +2,7 @@
  * Copyright (c) 2016 Open-RnD Sp. z o.o.
  * Copyright (c) 2016 RnDity Sp. z o.o.
  *
- * 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
  */
 
 #ifndef _STM32F10X_CLOCK_H_
diff --git a/arch/arm/soc/st_stm32/stm32f1/soc.c b/arch/arm/soc/st_stm32/stm32f1/soc.c
index efd252042..08131f7c4 100644
--- a/arch/arm/soc/st_stm32/stm32f1/soc.c
+++ b/arch/arm/soc/st_stm32/stm32f1/soc.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Open-RnD Sp. z o.o.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/st_stm32/stm32f1/soc.h b/arch/arm/soc/st_stm32/stm32f1/soc.h
index f716f6b03..b277095b9 100644
--- a/arch/arm/soc/st_stm32/stm32f1/soc.h
+++ b/arch/arm/soc/st_stm32/stm32f1/soc.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Open-RnD Sp. z o.o.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/st_stm32/stm32f1/soc_config.c b/arch/arm/soc/st_stm32/stm32f1/soc_config.c
index 403f19b4d..cc44211bf 100644
--- a/arch/arm/soc/st_stm32/stm32f1/soc_config.c
+++ b/arch/arm/soc/st_stm32/stm32f1/soc_config.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Open-RnD Sp. z o.o.
  *
- * 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
  */
 
 #include <errno.h>
diff --git a/arch/arm/soc/st_stm32/stm32f1/soc_gpio.c b/arch/arm/soc/st_stm32/stm32f1/soc_gpio.c
index 37acf4bc7..ade46ee79 100644
--- a/arch/arm/soc/st_stm32/stm32f1/soc_gpio.c
+++ b/arch/arm/soc/st_stm32/stm32f1/soc_gpio.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Open-RnD Sp. z o.o.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/st_stm32/stm32f1/soc_irq.h b/arch/arm/soc/st_stm32/stm32f1/soc_irq.h
index 5db91d6c8..538ddaf54 100644
--- a/arch/arm/soc/st_stm32/stm32f1/soc_irq.h
+++ b/arch/arm/soc/st_stm32/stm32f1/soc_irq.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Open-RnD Sp. z o.o.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/st_stm32/stm32f1/soc_registers.h b/arch/arm/soc/st_stm32/stm32f1/soc_registers.h
index 53d505bd8..cd07cc3b8 100644
--- a/arch/arm/soc/st_stm32/stm32f1/soc_registers.h
+++ b/arch/arm/soc/st_stm32/stm32f1/soc_registers.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Open-RnD Sp. z o.o.
  *
- * 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
  */
 
 #ifndef _STM32F10X_SOC_REGISTERS_H_
diff --git a/arch/arm/soc/st_stm32/stm32f4/Kconfig.defconfig.series b/arch/arm/soc/st_stm32/stm32f4/Kconfig.defconfig.series
index a9b243f3e..f7c975cfc 100644
--- a/arch/arm/soc/st_stm32/stm32f4/Kconfig.defconfig.series
+++ b/arch/arm/soc/st_stm32/stm32f4/Kconfig.defconfig.series
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Linaro Limited
 #
-# 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
 #
 
 if SOC_SERIES_STM32F4X
diff --git a/arch/arm/soc/st_stm32/stm32f4/Kconfig.defconfig.stm32f401xe b/arch/arm/soc/st_stm32/stm32f4/Kconfig.defconfig.stm32f401xe
index e204600b7..7044f75a0 100644
--- a/arch/arm/soc/st_stm32/stm32f4/Kconfig.defconfig.stm32f401xe
+++ b/arch/arm/soc/st_stm32/stm32f4/Kconfig.defconfig.stm32f401xe
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Linaro Limited.
 #
-# 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
 #
 
 if SOC_STM32F401XE
diff --git a/arch/arm/soc/st_stm32/stm32f4/Kconfig.defconfig.stm32f411xe b/arch/arm/soc/st_stm32/stm32f4/Kconfig.defconfig.stm32f411xe
index fc42c9632..69ee3e023 100644
--- a/arch/arm/soc/st_stm32/stm32f4/Kconfig.defconfig.stm32f411xe
+++ b/arch/arm/soc/st_stm32/stm32f4/Kconfig.defconfig.stm32f411xe
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Linaro Limited.
 #
-# 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
 #
 
 if SOC_STM32F411XE
diff --git a/arch/arm/soc/st_stm32/stm32f4/Kconfig.series b/arch/arm/soc/st_stm32/stm32f4/Kconfig.series
index 243a5f805..e54494700 100644
--- a/arch/arm/soc/st_stm32/stm32f4/Kconfig.series
+++ b/arch/arm/soc/st_stm32/stm32f4/Kconfig.series
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Linaro Limited
 #
-# 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
 #
 
 config SOC_SERIES_STM32F4X
diff --git a/arch/arm/soc/st_stm32/stm32f4/Kconfig.soc b/arch/arm/soc/st_stm32/stm32f4/Kconfig.soc
index d4076ffde..a8e5d56fe 100644
--- a/arch/arm/soc/st_stm32/stm32f4/Kconfig.soc
+++ b/arch/arm/soc/st_stm32/stm32f4/Kconfig.soc
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Linaro Limited.
 #
-# 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
 #
 
 choice
diff --git a/arch/arm/soc/st_stm32/stm32f4/flash_registers.h b/arch/arm/soc/st_stm32/stm32f4/flash_registers.h
index a3a464f37..1f598b8fa 100644
--- a/arch/arm/soc/st_stm32/stm32f4/flash_registers.h
+++ b/arch/arm/soc/st_stm32/stm32f4/flash_registers.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Linaro Limited.
  *
- * 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
  */
 
 #ifndef _STM32F4X_FLASH_REGISTERS_H_
diff --git a/arch/arm/soc/st_stm32/stm32f4/gpio_registers.h b/arch/arm/soc/st_stm32/stm32f4/gpio_registers.h
index a750ebdef..f6a065778 100644
--- a/arch/arm/soc/st_stm32/stm32f4/gpio_registers.h
+++ b/arch/arm/soc/st_stm32/stm32f4/gpio_registers.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Linaro Limited.
  *
- * 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
  */
 
 #ifndef _STM32F4X_GPIO_REGISTERS_H_
diff --git a/arch/arm/soc/st_stm32/stm32f4/linker.ld b/arch/arm/soc/st_stm32/stm32f4/linker.ld
index 220d80cc1..ba0abaf50 100644
--- a/arch/arm/soc/st_stm32/stm32f4/linker.ld
+++ b/arch/arm/soc/st_stm32/stm32f4/linker.ld
@@ -3,17 +3,7 @@
 /*
  * Copyright (c) 2014-2016 Wind River Systems, Inc.
  *
- * 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
  */
 
 #include <arch/arm/cortex_m/scripts/linker.ld>
diff --git a/arch/arm/soc/st_stm32/stm32f4/rcc_registers.h b/arch/arm/soc/st_stm32/stm32f4/rcc_registers.h
index bdaaa8fb7..45a1f0508 100644
--- a/arch/arm/soc/st_stm32/stm32f4/rcc_registers.h
+++ b/arch/arm/soc/st_stm32/stm32f4/rcc_registers.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Linaro Limited.
  *
- * 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 andSTM
- * limitations under the License.
+ * SPDX-License-Identifier: Apache-2.0
  */
 
 #ifndef _STM32F4X_CLOCK_H_
diff --git a/arch/arm/soc/st_stm32/stm32f4/soc.c b/arch/arm/soc/st_stm32/stm32f4/soc.c
index cecdd30e0..2fa73ae5a 100644
--- a/arch/arm/soc/st_stm32/stm32f4/soc.c
+++ b/arch/arm/soc/st_stm32/stm32f4/soc.c
@@ -2,17 +2,7 @@
  * Copyright (c) 2016 Open-RnD Sp. z o.o.
  * Copyright (c) 2016 Linaro Limited.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/st_stm32/stm32f4/soc.h b/arch/arm/soc/st_stm32/stm32f4/soc.h
index f48ae1a50..372d2afcf 100644
--- a/arch/arm/soc/st_stm32/stm32f4/soc.h
+++ b/arch/arm/soc/st_stm32/stm32f4/soc.h
@@ -2,17 +2,7 @@
  * Copyright (c) 2016 Open-RnD Sp. z o.o.
  * Copyright (c) 2016 Linaro Limited.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/st_stm32/stm32f4/soc_gpio.c b/arch/arm/soc/st_stm32/stm32f4/soc_gpio.c
index f5918d994..03c9bfe8f 100644
--- a/arch/arm/soc/st_stm32/stm32f4/soc_gpio.c
+++ b/arch/arm/soc/st_stm32/stm32f4/soc_gpio.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) Linaro Limited.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/st_stm32/stm32f4/soc_irq.h b/arch/arm/soc/st_stm32/stm32f4/soc_irq.h
index 2c77a3d93..e34cdaaaf 100644
--- a/arch/arm/soc/st_stm32/stm32f4/soc_irq.h
+++ b/arch/arm/soc/st_stm32/stm32f4/soc_irq.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Linaro Limited.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/st_stm32/stm32f4/soc_pinmux.c b/arch/arm/soc/st_stm32/stm32f4/soc_pinmux.c
index 5c66abdcd..711372f58 100644
--- a/arch/arm/soc/st_stm32/stm32f4/soc_pinmux.c
+++ b/arch/arm/soc/st_stm32/stm32f4/soc_pinmux.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Linaro Limited.
  *
- * 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
  */
 
 #include <errno.h>
diff --git a/arch/arm/soc/st_stm32/stm32f4/soc_registers.h b/arch/arm/soc/st_stm32/stm32f4/soc_registers.h
index 4fc2ea7b6..1ad979890 100644
--- a/arch/arm/soc/st_stm32/stm32f4/soc_registers.h
+++ b/arch/arm/soc/st_stm32/stm32f4/soc_registers.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Linaro Limited.
  *
- * 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
  */
 
 #ifndef _STM32F4_SOC_REGISTERS_H_
diff --git a/arch/arm/soc/st_stm32/stm32l4/Kconfig.defconfig.series b/arch/arm/soc/st_stm32/stm32l4/Kconfig.defconfig.series
index 604dcaefb..e76c39649 100644
--- a/arch/arm/soc/st_stm32/stm32l4/Kconfig.defconfig.series
+++ b/arch/arm/soc/st_stm32/stm32l4/Kconfig.defconfig.series
@@ -3,17 +3,7 @@
 # Copyright (c) 2016 Open-RnD Sp. z o.o.
 # Copyright (c) 2016 BayLibre, SAS
 #
-# 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
 #
 
 if SOC_SERIES_STM32L4X
diff --git a/arch/arm/soc/st_stm32/stm32l4/Kconfig.defconfig.stm32l476xx b/arch/arm/soc/st_stm32/stm32l4/Kconfig.defconfig.stm32l476xx
index 2e9ae7052..7ddfabfa0 100644
--- a/arch/arm/soc/st_stm32/stm32l4/Kconfig.defconfig.stm32l476xx
+++ b/arch/arm/soc/st_stm32/stm32l4/Kconfig.defconfig.stm32l476xx
@@ -3,17 +3,7 @@
 # Copyright (c) 2016 Open-RnD Sp. z o.o.
 # Copyright (c) 2016 BayLibre, SAS
 #
-# 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
 #
 
 if SOC_STM32L476XX
diff --git a/arch/arm/soc/st_stm32/stm32l4/Kconfig.series b/arch/arm/soc/st_stm32/stm32l4/Kconfig.series
index 973150580..6e0cf6bd2 100644
--- a/arch/arm/soc/st_stm32/stm32l4/Kconfig.series
+++ b/arch/arm/soc/st_stm32/stm32l4/Kconfig.series
@@ -3,17 +3,7 @@
 # Copyright (c) 2016 Open-RnD Sp. z o.o.
 # Copyright (c) 2016 BayLibre, SAS
 #
-# 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
 #
 
 config SOC_SERIES_STM32L4X
diff --git a/arch/arm/soc/st_stm32/stm32l4/Kconfig.soc b/arch/arm/soc/st_stm32/stm32l4/Kconfig.soc
index 7c8bfdb93..dd1127580 100644
--- a/arch/arm/soc/st_stm32/stm32l4/Kconfig.soc
+++ b/arch/arm/soc/st_stm32/stm32l4/Kconfig.soc
@@ -3,17 +3,7 @@
 # Copyright (c) 2016 Open-RnD Sp. z o.o.
 # Copyright (c) 2016 BayLibre, SAS
 #
-# 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
 #
 
 choice
diff --git a/arch/arm/soc/st_stm32/stm32l4/flash_registers.h b/arch/arm/soc/st_stm32/stm32l4/flash_registers.h
index 653ed6588..bb8f042f8 100644
--- a/arch/arm/soc/st_stm32/stm32l4/flash_registers.h
+++ b/arch/arm/soc/st_stm32/stm32l4/flash_registers.h
@@ -2,17 +2,7 @@
  * Copyright (c) 2016 Open-RnD Sp. z o.o.
  * Copyright (c) 2016 BayLibre, SAS
  *
- * 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
  */
 
 #ifndef _STM32L4X_FLASH_REGISTERS_H_
diff --git a/arch/arm/soc/st_stm32/stm32l4/linker.ld b/arch/arm/soc/st_stm32/stm32l4/linker.ld
index 220d80cc1..ba0abaf50 100644
--- a/arch/arm/soc/st_stm32/stm32l4/linker.ld
+++ b/arch/arm/soc/st_stm32/stm32l4/linker.ld
@@ -3,17 +3,7 @@
 /*
  * Copyright (c) 2014-2016 Wind River Systems, Inc.
  *
- * 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
  */
 
 #include <arch/arm/cortex_m/scripts/linker.ld>
diff --git a/arch/arm/soc/st_stm32/stm32l4/rcc_registers.h b/arch/arm/soc/st_stm32/stm32l4/rcc_registers.h
index 582a88525..f89e9cab5 100644
--- a/arch/arm/soc/st_stm32/stm32l4/rcc_registers.h
+++ b/arch/arm/soc/st_stm32/stm32l4/rcc_registers.h
@@ -2,17 +2,7 @@
  * Copyright (c) 2016 Open-RnD Sp. z o.o.
  * Copyright (c) 2016 BayLibre, SAS
  *
- * 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
  */
 
 #ifndef _STM32L4X_CLOCK_H_
diff --git a/arch/arm/soc/st_stm32/stm32l4/soc.c b/arch/arm/soc/st_stm32/stm32l4/soc.c
index 28cfe4b32..c1466a44f 100644
--- a/arch/arm/soc/st_stm32/stm32l4/soc.c
+++ b/arch/arm/soc/st_stm32/stm32l4/soc.c
@@ -2,17 +2,7 @@
  * Copyright (c) 2016 Open-RnD Sp. z o.o.
  * Copyright (c) 2016 BayLibre, SAS
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/st_stm32/stm32l4/soc.h b/arch/arm/soc/st_stm32/stm32l4/soc.h
index 1dac28117..cb6c5639c 100644
--- a/arch/arm/soc/st_stm32/stm32l4/soc.h
+++ b/arch/arm/soc/st_stm32/stm32l4/soc.h
@@ -2,17 +2,7 @@
  * Copyright (c) 2016 Open-RnD Sp. z o.o.
  * Copyright (c) 2016 BayLibre, SAS
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/st_stm32/stm32l4/soc_gpio.c b/arch/arm/soc/st_stm32/stm32l4/soc_gpio.c
index 70315b60e..b7ea73dc0 100644
--- a/arch/arm/soc/st_stm32/stm32l4/soc_gpio.c
+++ b/arch/arm/soc/st_stm32/stm32l4/soc_gpio.c
@@ -2,17 +2,7 @@
  * Copyright (c) 2016 Open-RnD Sp. z o.o.
  * Copyright (c) 2016 BayLibre, SAS
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/st_stm32/stm32l4/soc_irq.h b/arch/arm/soc/st_stm32/stm32l4/soc_irq.h
index d3fb966d3..bed99cc40 100644
--- a/arch/arm/soc/st_stm32/stm32l4/soc_irq.h
+++ b/arch/arm/soc/st_stm32/stm32l4/soc_irq.h
@@ -2,17 +2,7 @@
  * Copyright (c) 2016 Open-RnD Sp. z o.o.
  * Copyright (c) 2016 BayLibre, SAS
  *
- * 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
  */
 
 #ifndef _STM32L4_SOC_IRQ_H_
diff --git a/arch/arm/soc/st_stm32/stm32l4/soc_pinmux.c b/arch/arm/soc/st_stm32/stm32l4/soc_pinmux.c
index 7931633d6..81a610624 100644
--- a/arch/arm/soc/st_stm32/stm32l4/soc_pinmux.c
+++ b/arch/arm/soc/st_stm32/stm32l4/soc_pinmux.c
@@ -2,17 +2,7 @@
  * Copyright (c) 2016 Open-RnD Sp. z o.o.
  * Copyright (c) 2016 BayLibre, SAS
  *
- * 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
  */
 
 #include <errno.h>
diff --git a/arch/arm/soc/st_stm32/stm32l4/soc_pinmux.h b/arch/arm/soc/st_stm32/stm32l4/soc_pinmux.h
index 389265ead..b1590650b 100644
--- a/arch/arm/soc/st_stm32/stm32l4/soc_pinmux.h
+++ b/arch/arm/soc/st_stm32/stm32l4/soc_pinmux.h
@@ -2,17 +2,7 @@
  * Copyright (c) 2016 Open-RnD Sp. z o.o.
  * Copyright (c) 2016 BayLibre, SAS
  *
- * 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
  */
 
 #ifndef _STM32L4X_SOC_PINMUX_H_
diff --git a/arch/arm/soc/st_stm32/stm32l4/soc_registers.h b/arch/arm/soc/st_stm32/stm32l4/soc_registers.h
index ee5c26c15..733f96d66 100644
--- a/arch/arm/soc/st_stm32/stm32l4/soc_registers.h
+++ b/arch/arm/soc/st_stm32/stm32l4/soc_registers.h
@@ -2,17 +2,7 @@
  * Copyright (c) 2016 Open-RnD Sp. z o.o.
  * Copyright (c) 2016 BayLibre, SAS
  *
- * 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
  */
 
 #ifndef _STM32L4X_SOC_REGISTERS_H_
diff --git a/arch/arm/soc/st_stm32/stm32l4/syscfg_registers.h b/arch/arm/soc/st_stm32/stm32l4/syscfg_registers.h
index 10a4014e8..1f095d83e 100644
--- a/arch/arm/soc/st_stm32/stm32l4/syscfg_registers.h
+++ b/arch/arm/soc/st_stm32/stm32l4/syscfg_registers.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 BayLibre, SAS
  *
- * 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
  */
 
 #ifndef _STM32L4X_SYSCFG_REGISTERS_H_
diff --git a/arch/arm/soc/ti_lm3s6965/Kconfig b/arch/arm/soc/ti_lm3s6965/Kconfig
index 6fd3b6790..fc04b4e95 100644
--- a/arch/arm/soc/ti_lm3s6965/Kconfig
+++ b/arch/arm/soc/ti_lm3s6965/Kconfig
@@ -3,17 +3,7 @@
 #
 # Copyright (c) 2014-2015 Wind River Systems, Inc.
 #
-# 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
 #
 
 if SOC_TI_LM3S6965
diff --git a/arch/arm/soc/ti_lm3s6965/Kconfig.defconfig b/arch/arm/soc/ti_lm3s6965/Kconfig.defconfig
index 3e14ea56c..c7f87d229 100644
--- a/arch/arm/soc/ti_lm3s6965/Kconfig.defconfig
+++ b/arch/arm/soc/ti_lm3s6965/Kconfig.defconfig
@@ -3,17 +3,7 @@
 #
 # Copyright (c) 2014-2015 Wind River Systems, Inc.
 #
-# 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
 #
 
 if SOC_TI_LM3S6965
diff --git a/arch/arm/soc/ti_lm3s6965/linker.ld b/arch/arm/soc/ti_lm3s6965/linker.ld
index cf2cfad59..b6ccb0279 100644
--- a/arch/arm/soc/ti_lm3s6965/linker.ld
+++ b/arch/arm/soc/ti_lm3s6965/linker.ld
@@ -3,17 +3,7 @@
 /*
  * Copyright (c) 2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 #include <arch/arm/cortex_m/scripts/linker.ld>
diff --git a/arch/arm/soc/ti_lm3s6965/scp.c b/arch/arm/soc/ti_lm3s6965/scp.c
index 79985d34f..291b3acf1 100644
--- a/arch/arm/soc/ti_lm3s6965/scp.c
+++ b/arch/arm/soc/ti_lm3s6965/scp.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2013-2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/ti_lm3s6965/scp.h b/arch/arm/soc/ti_lm3s6965/scp.h
index d10c3b5ce..f35c657f1 100644
--- a/arch/arm/soc/ti_lm3s6965/scp.h
+++ b/arch/arm/soc/ti_lm3s6965/scp.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2013-2014 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/ti_lm3s6965/soc.c b/arch/arm/soc/ti_lm3s6965/soc.c
index 0d4043afa..402a84db2 100644
--- a/arch/arm/soc/ti_lm3s6965/soc.c
+++ b/arch/arm/soc/ti_lm3s6965/soc.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2013-2015 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/ti_lm3s6965/soc.h b/arch/arm/soc/ti_lm3s6965/soc.h
index 4f8aacad4..6ae548ca6 100644
--- a/arch/arm/soc/ti_lm3s6965/soc.h
+++ b/arch/arm/soc/ti_lm3s6965/soc.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2013-2015 Wind River Systems, Inc.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/ti_lm3s6965/soc_config.c b/arch/arm/soc/ti_lm3s6965/soc_config.c
index 71c59df8b..c65ec1d56 100644
--- a/arch/arm/soc/ti_lm3s6965/soc_config.c
+++ b/arch/arm/soc/ti_lm3s6965/soc_config.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2015 Intel Corporation.
  *
- * 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
  */
 
 /**
diff --git a/arch/arm/soc/ti_simplelink/cc32xx/soc.c b/arch/arm/soc/ti_simplelink/cc32xx/soc.c
index 2477151e7..61ac3bd1f 100644
--- a/arch/arm/soc/ti_simplelink/cc32xx/soc.c
+++ b/arch/arm/soc/ti_simplelink/cc32xx/soc.c
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016, Texas Instruments Incorporated
  *
- * 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
  */
 
 #include <kernel.h>
diff --git a/arch/arm/soc/ti_simplelink/cc32xx/soc.h b/arch/arm/soc/ti_simplelink/cc32xx/soc.h
index 7226cfb31..41555a183 100644
--- a/arch/arm/soc/ti_simplelink/cc32xx/soc.h
+++ b/arch/arm/soc/ti_simplelink/cc32xx/soc.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016, Texas Instruments Incorporated
  *
- * 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
  */
 #include <inc/hw_types.h>
 #include <driverlib/prcm.h>