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>

90 files changed, 90 insertions, 990 deletions

diff --git a/boards/arc/arduino_101_sss/board.h b/boards/arc/arduino_101_sss/board.h
index 6473c4aeb..31e09deb1 100644
--- a/boards/arc/arduino_101_sss/board.h
+++ b/boards/arc/arduino_101_sss/board.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
  */
 
 #ifndef __INC_BOARD_H
diff --git a/boards/arc/em_starterkit/Kconfig.board b/boards/arc/em_starterkit/Kconfig.board
index 8588727fc..c323e15cc 100644
--- a/boards/arc/em_starterkit/Kconfig.board
+++ b/boards/arc/em_starterkit/Kconfig.board
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Synopsys, Inc. All rights reserved.
 #
-# 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 BOARD_EM_STARTERKIT
 	bool "ARC EM Starter Kit"
diff --git a/boards/arc/em_starterkit/board.h b/boards/arc/em_starterkit/board.h
index 92bacc96c..5580515e2 100644
--- a/boards/arc/em_starterkit/board.h
+++ b/boards/arc/em_starterkit/board.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016, Synopsys, Inc. All rights reserved.
  *
- * 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 __INC_BOARD_H
diff --git a/boards/arc/quark_se_c1000_ss_devboard/board.h b/boards/arc/quark_se_c1000_ss_devboard/board.h
index b664f0c7a..a706a89af 100644
--- a/boards/arc/quark_se_c1000_ss_devboard/board.h
+++ b/boards/arc/quark_se_c1000_ss_devboard/board.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
  */
 
 #ifndef __INC_BOARD_H
diff --git a/boards/arm/96b_carbon/Kconfig.board b/boards/arm/96b_carbon/Kconfig.board
index 4c09c0e72..001cad073 100644
--- a/boards/arm/96b_carbon/Kconfig.board
+++ b/boards/arm/96b_carbon/Kconfig.board
@@ -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 BOARD_96B_CARBON
diff --git a/boards/arm/96b_carbon/Kconfig.defconfig b/boards/arm/96b_carbon/Kconfig.defconfig
index 3992a28d4..72441d7b3 100644
--- a/boards/arm/96b_carbon/Kconfig.defconfig
+++ b/boards/arm/96b_carbon/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
 #
 
 if BOARD_96B_CARBON
diff --git a/boards/arm/96b_carbon/board.h b/boards/arm/96b_carbon/board.h
index a793beb55..bcc10536d 100644
--- a/boards/arm/96b_carbon/board.h
+++ b/boards/arm/96b_carbon/board.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 __INC_BOARD_H
diff --git a/boards/arm/96b_nitrogen/Kconfig b/boards/arm/96b_nitrogen/Kconfig
index 11b2c559b..2c79679cf 100644
--- a/boards/arm/96b_nitrogen/Kconfig
+++ b/boards/arm/96b_nitrogen/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
 
 if BOARD_96B_NITROGEN
 
diff --git a/boards/arm/96b_nitrogen/Kconfig.board b/boards/arm/96b_nitrogen/Kconfig.board
index 4ad64e654..d540cbfae 100644
--- a/boards/arm/96b_nitrogen/Kconfig.board
+++ b/boards/arm/96b_nitrogen/Kconfig.board
@@ -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 BOARD_96B_NITROGEN
 	bool "96Boards Nitrogen"
diff --git a/boards/arm/96b_nitrogen/Kconfig.defconfig b/boards/arm/96b_nitrogen/Kconfig.defconfig
index 0866500fd..20947b104 100644
--- a/boards/arm/96b_nitrogen/Kconfig.defconfig
+++ b/boards/arm/96b_nitrogen/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 BOARD_96B_NITROGEN
 
diff --git a/boards/arm/96b_nitrogen/board.h b/boards/arm/96b_nitrogen/board.h
index a793beb55..bcc10536d 100644
--- a/boards/arm/96b_nitrogen/board.h
+++ b/boards/arm/96b_nitrogen/board.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 __INC_BOARD_H
diff --git a/boards/arm/arduino_101_ble/Kconfig.board b/boards/arm/arduino_101_ble/Kconfig.board
index 302c595b5..59b4cf019 100644
--- a/boards/arm/arduino_101_ble/Kconfig.board
+++ b/boards/arm/arduino_101_ble/Kconfig.board
@@ -2,17 +2,7 @@
 #
 # 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
 
 config BOARD_ARDUINO_101_BLE
 	bool "Arduino 101 BLE"
diff --git a/boards/arm/arduino_101_ble/Kconfig.defconfig b/boards/arm/arduino_101_ble/Kconfig.defconfig
index 2812b229c..ab090cbd5 100644
--- a/boards/arm/arduino_101_ble/Kconfig.defconfig
+++ b/boards/arm/arduino_101_ble/Kconfig.defconfig
@@ -2,17 +2,7 @@
 #
 # 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
 
 if BOARD_ARDUINO_101_BLE
 
diff --git a/boards/arm/arduino_101_ble/board.h b/boards/arm/arduino_101_ble/board.h
index 66dd23fd7..65b22b46e 100644
--- a/boards/arm/arduino_101_ble/board.h
+++ b/boards/arm/arduino_101_ble/board.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
  */
 
 #ifndef __INC_BOARD_H
diff --git a/boards/arm/arduino_due/board.h b/boards/arm/arduino_due/board.h
index f56445210..07fc537ba 100644
--- a/boards/arm/arduino_due/board.h
+++ b/boards/arm/arduino_due/board.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2015-2016 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
  */
 
 #ifndef __INC_BOARD_H
diff --git a/boards/arm/arduino_due/pinmux.c b/boards/arm/arduino_due/pinmux.c
index 13b9d8bb0..93275175a 100644
--- a/boards/arm/arduino_due/pinmux.c
+++ b/boards/arm/arduino_due/pinmux.c
@@ -3,17 +3,7 @@
 /*
  * 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
  */
 
 #include <device.h>
diff --git a/boards/arm/bbc_microbit/Kconfig.board b/boards/arm/bbc_microbit/Kconfig.board
index 2d92d6075..4aa47204c 100644
--- a/boards/arm/bbc_microbit/Kconfig.board
+++ b/boards/arm/bbc_microbit/Kconfig.board
@@ -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 BOARD_BBC_MICROBIT
 	bool "BBC MICRO:BIT"
diff --git a/boards/arm/bbc_microbit/Kconfig.defconfig b/boards/arm/bbc_microbit/Kconfig.defconfig
index ef097b62e..e555e5162 100644
--- a/boards/arm/bbc_microbit/Kconfig.defconfig
+++ b/boards/arm/bbc_microbit/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 BOARD_BBC_MICROBIT
 
diff --git a/boards/arm/bbc_microbit/board.h b/boards/arm/bbc_microbit/board.h
index f898dd6ed..6329925ec 100644
--- a/boards/arm/bbc_microbit/board.h
+++ b/boards/arm/bbc_microbit/board.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
  */
 
 #ifndef __INC_BOARD_H
diff --git a/boards/arm/cc3200_launchxl/board.h b/boards/arm/cc3200_launchxl/board.h
index 56265c18d..811997316 100644
--- a/boards/arm/cc3200_launchxl/board.h
+++ b/boards/arm/cc3200_launchxl/board.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
  */
 #ifndef __INC_BOARD_H
 #define __INC_BOARD_H
diff --git a/boards/arm/frdm_k64f/Kconfig.defconfig b/boards/arm/frdm_k64f/Kconfig.defconfig
index 7b4984ac6..226f31c89 100644
--- a/boards/arm/frdm_k64f/Kconfig.defconfig
+++ b/boards/arm/frdm_k64f/Kconfig.defconfig
@@ -2,17 +2,7 @@
 #
 # 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
 #
 
 if BOARD_FRDM_K64F
diff --git a/boards/arm/frdm_k64f/board.h b/boards/arm/frdm_k64f/board.h
index d6b2efc01..673bf50c5 100644
--- a/boards/arm/frdm_k64f/board.h
+++ b/boards/arm/frdm_k64f/board.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
  */
 
 #ifndef __INC_BOARD_H
diff --git a/boards/arm/frdm_k64f/pinmux.c b/boards/arm/frdm_k64f/pinmux.c
index 23afa6694..20395a914 100644
--- a/boards/arm/frdm_k64f/pinmux.c
+++ b/boards/arm/frdm_k64f/pinmux.c
@@ -1,17 +1,7 @@
 /*
  * 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
  */
 
 #include <init.h>
diff --git a/boards/arm/hexiwear_k64/Kconfig.board b/boards/arm/hexiwear_k64/Kconfig.board
index 8d9d00c0b..3108b024d 100644
--- a/boards/arm/hexiwear_k64/Kconfig.board
+++ b/boards/arm/hexiwear_k64/Kconfig.board
@@ -2,17 +2,7 @@
 #
 # 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 BOARD_HEXIWEAR_K64
diff --git a/boards/arm/hexiwear_k64/Kconfig.defconfig b/boards/arm/hexiwear_k64/Kconfig.defconfig
index 29be85ccf..6d878ed61 100644
--- a/boards/arm/hexiwear_k64/Kconfig.defconfig
+++ b/boards/arm/hexiwear_k64/Kconfig.defconfig
@@ -2,17 +2,7 @@
 #
 # 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
 #
 
 if BOARD_HEXIWEAR_K64
diff --git a/boards/arm/hexiwear_k64/Makefile b/boards/arm/hexiwear_k64/Makefile
index ddf96d10b..9b85667fb 100644
--- a/boards/arm/hexiwear_k64/Makefile
+++ b/boards/arm/hexiwear_k64/Makefile
@@ -2,17 +2,7 @@
 #
 # 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
 #
 
 ccflags-y +=-I$(srctree)/drivers
diff --git a/boards/arm/hexiwear_k64/board.h b/boards/arm/hexiwear_k64/board.h
index 520fb87f6..59df854e2 100644
--- a/boards/arm/hexiwear_k64/board.h
+++ b/boards/arm/hexiwear_k64/board.h
@@ -1,17 +1,7 @@
 /*
  * 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
  */
 
 #ifndef __INC_BOARD_H
diff --git a/boards/arm/hexiwear_k64/pinmux.c b/boards/arm/hexiwear_k64/pinmux.c
index 85d9ce85f..88c80b45b 100644
--- a/boards/arm/hexiwear_k64/pinmux.c
+++ b/boards/arm/hexiwear_k64/pinmux.c
@@ -1,17 +1,7 @@
 /*
  * 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
  */
 
 #include <init.h>
diff --git a/boards/arm/nrf51_blenano/Kconfig.board b/boards/arm/nrf51_blenano/Kconfig.board
index 735689121..8d1bdaf3a 100644
--- a/boards/arm/nrf51_blenano/Kconfig.board
+++ b/boards/arm/nrf51_blenano/Kconfig.board
@@ -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 BOARD_NRF51_BLENANO
 	bool "nRF51 BLENANO"
diff --git a/boards/arm/nrf51_blenano/Kconfig.defconfig b/boards/arm/nrf51_blenano/Kconfig.defconfig
index 7b8e6e439..5deeb0c78 100644
--- a/boards/arm/nrf51_blenano/Kconfig.defconfig
+++ b/boards/arm/nrf51_blenano/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 BOARD_NRF51_BLENANO
 
diff --git a/boards/arm/nrf51_blenano/board.h b/boards/arm/nrf51_blenano/board.h
index a793beb55..bcc10536d 100644
--- a/boards/arm/nrf51_blenano/board.h
+++ b/boards/arm/nrf51_blenano/board.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 __INC_BOARD_H
diff --git a/boards/arm/nrf51_pca10028/Kconfig.board b/boards/arm/nrf51_pca10028/Kconfig.board
index ac103e268..64fd15918 100644
--- a/boards/arm/nrf51_pca10028/Kconfig.board
+++ b/boards/arm/nrf51_pca10028/Kconfig.board
@@ -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 BOARD_NRF51_PCA10028
 	bool "nRF51 PCA10028"
diff --git a/boards/arm/nrf51_pca10028/Kconfig.defconfig b/boards/arm/nrf51_pca10028/Kconfig.defconfig
index 8d5468fa2..8ebd6a272 100644
--- a/boards/arm/nrf51_pca10028/Kconfig.defconfig
+++ b/boards/arm/nrf51_pca10028/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
 
 if BOARD_NRF51_PCA10028
 
diff --git a/boards/arm/nrf51_pca10028/board.h b/boards/arm/nrf51_pca10028/board.h
index ec208c0fe..5869b15a9 100644
--- a/boards/arm/nrf51_pca10028/board.h
+++ b/boards/arm/nrf51_pca10028/board.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 __INC_BOARD_H
diff --git a/boards/arm/nrf52840_pca10056/Kconfig b/boards/arm/nrf52840_pca10056/Kconfig
index b6ae12312..aad2d9b7c 100644
--- a/boards/arm/nrf52840_pca10056/Kconfig
+++ b/boards/arm/nrf52840_pca10056/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
 
 if BOARD_NRF52840_PCA10056
 
diff --git a/boards/arm/nrf52840_pca10056/Kconfig.board b/boards/arm/nrf52840_pca10056/Kconfig.board
index d2be37ac8..676a2038c 100644
--- a/boards/arm/nrf52840_pca10056/Kconfig.board
+++ b/boards/arm/nrf52840_pca10056/Kconfig.board
@@ -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  BOARD_NRF52840_PCA10056
 	bool "NRF52840 PCA10056"
diff --git a/boards/arm/nrf52840_pca10056/Kconfig.defconfig b/boards/arm/nrf52840_pca10056/Kconfig.defconfig
index d130d4a65..790c1372c 100644
--- a/boards/arm/nrf52840_pca10056/Kconfig.defconfig
+++ b/boards/arm/nrf52840_pca10056/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 BOARD_NRF52840_PCA10056
 
diff --git a/boards/arm/nrf52840_pca10056/board.h b/boards/arm/nrf52840_pca10056/board.h
index dbdcb086d..34de1e0a5 100644
--- a/boards/arm/nrf52840_pca10056/board.h
+++ b/boards/arm/nrf52840_pca10056/board.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
  */
 
 #ifndef __INC_BOARD_H
diff --git a/boards/arm/nrf52_pca10040/Kconfig b/boards/arm/nrf52_pca10040/Kconfig
index ba88651f7..fc9737942 100644
--- a/boards/arm/nrf52_pca10040/Kconfig
+++ b/boards/arm/nrf52_pca10040/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
 
 if BOARD_NRF52_PCA10040
 
diff --git a/boards/arm/nrf52_pca10040/Kconfig.board b/boards/arm/nrf52_pca10040/Kconfig.board
index 83def618f..49b6e1895 100644
--- a/boards/arm/nrf52_pca10040/Kconfig.board
+++ b/boards/arm/nrf52_pca10040/Kconfig.board
@@ -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  BOARD_NRF52_PCA10040
 	bool "nRF52 PCA10040"
diff --git a/boards/arm/nrf52_pca10040/Kconfig.defconfig b/boards/arm/nrf52_pca10040/Kconfig.defconfig
index 9d469c27c..6c3b3a4a8 100644
--- a/boards/arm/nrf52_pca10040/Kconfig.defconfig
+++ b/boards/arm/nrf52_pca10040/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 BOARD_NRF52_PCA10040
 
diff --git a/boards/arm/nrf52_pca10040/board.h b/boards/arm/nrf52_pca10040/board.h
index dc6452f8e..4775bbc45 100644
--- a/boards/arm/nrf52_pca10040/board.h
+++ b/boards/arm/nrf52_pca10040/board.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
  */
 
 #ifndef __INC_BOARD_H
diff --git a/boards/arm/nucleo_f103rb/Kconfig.board b/boards/arm/nucleo_f103rb/Kconfig.board
index 638719a7d..eb69d2098 100644
--- a/boards/arm/nucleo_f103rb/Kconfig.board
+++ b/boards/arm/nucleo_f103rb/Kconfig.board
@@ -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 BOARD_NUCLEO_F103RB
diff --git a/boards/arm/nucleo_f103rb/Kconfig.defconfig b/boards/arm/nucleo_f103rb/Kconfig.defconfig
index 96146fca0..22c56c4c4 100644
--- a/boards/arm/nucleo_f103rb/Kconfig.defconfig
+++ b/boards/arm/nucleo_f103rb/Kconfig.defconfig
@@ -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 BOARD_NUCLEO_F103RB
diff --git a/boards/arm/nucleo_f103rb/board.h b/boards/arm/nucleo_f103rb/board.h
index 1b586ab64..496234f83 100644
--- a/boards/arm/nucleo_f103rb/board.h
+++ b/boards/arm/nucleo_f103rb/board.h
@@ -2,17 +2,7 @@
  * Copyright (c) 2015 Intel Corporation
  * Copyright (c) 2017 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 __INC_BOARD_H
diff --git a/boards/arm/nucleo_f401re/Kconfig.board b/boards/arm/nucleo_f401re/Kconfig.board
index c4c4c66cb..b742c2528 100644
--- a/boards/arm/nucleo_f401re/Kconfig.board
+++ b/boards/arm/nucleo_f401re/Kconfig.board
@@ -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 BOARD_NUCLEO_F401RE
diff --git a/boards/arm/nucleo_f401re/Kconfig.defconfig b/boards/arm/nucleo_f401re/Kconfig.defconfig
index 40cb8a990..48cfa3259 100644
--- a/boards/arm/nucleo_f401re/Kconfig.defconfig
+++ b/boards/arm/nucleo_f401re/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
 #
 
 if BOARD_NUCLEO_F401RE
diff --git a/boards/arm/nucleo_f401re/board.h b/boards/arm/nucleo_f401re/board.h
index 3f6e05812..7e12cda9e 100644
--- a/boards/arm/nucleo_f401re/board.h
+++ b/boards/arm/nucleo_f401re/board.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 __INC_BOARD_H
diff --git a/boards/arm/nucleo_f411re/Kconfig.board b/boards/arm/nucleo_f411re/Kconfig.board
index b8297f298..3797e469c 100644
--- a/boards/arm/nucleo_f411re/Kconfig.board
+++ b/boards/arm/nucleo_f411re/Kconfig.board
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Matthias Boesl
 #
-# 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 BOARD_NUCLEO_F411RE
diff --git a/boards/arm/nucleo_f411re/Kconfig.defconfig b/boards/arm/nucleo_f411re/Kconfig.defconfig
index f283f483f..ac8812ca6 100644
--- a/boards/arm/nucleo_f411re/Kconfig.defconfig
+++ b/boards/arm/nucleo_f411re/Kconfig.defconfig
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016 Matthias Boesl
 #
-# 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 BOARD_NUCLEO_F411RE
diff --git a/boards/arm/nucleo_f411re/board.h b/boards/arm/nucleo_f411re/board.h
index 62cbb9bb9..d10257c61 100644
--- a/boards/arm/nucleo_f411re/board.h
+++ b/boards/arm/nucleo_f411re/board.h
@@ -2,17 +2,7 @@
  * Copyright (c) 2016 Matthias Boesl
  * Copyright (c) 2017 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 __INC_BOARD_H
diff --git a/boards/arm/nucleo_l476rg/Kconfig.board b/boards/arm/nucleo_l476rg/Kconfig.board
index 82d9645f6..27db7c33b 100644
--- a/boards/arm/nucleo_l476rg/Kconfig.board
+++ b/boards/arm/nucleo_l476rg/Kconfig.board
@@ -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 BOARD_NUCLEO_L476RG
diff --git a/boards/arm/nucleo_l476rg/Kconfig.defconfig b/boards/arm/nucleo_l476rg/Kconfig.defconfig
index d2370a232..adcb9ea00 100644
--- a/boards/arm/nucleo_l476rg/Kconfig.defconfig
+++ b/boards/arm/nucleo_l476rg/Kconfig.defconfig
@@ -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 BOARD_NUCLEO_L476RG
diff --git a/boards/arm/nucleo_l476rg/board.h b/boards/arm/nucleo_l476rg/board.h
index 1b586ab64..496234f83 100644
--- a/boards/arm/nucleo_l476rg/board.h
+++ b/boards/arm/nucleo_l476rg/board.h
@@ -2,17 +2,7 @@
  * Copyright (c) 2015 Intel Corporation
  * Copyright (c) 2017 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 __INC_BOARD_H
diff --git a/boards/arm/olimexino_stm32/Kconfig.board b/boards/arm/olimexino_stm32/Kconfig.board
index 5b109cd7b..c715dab5e 100644
--- a/boards/arm/olimexino_stm32/Kconfig.board
+++ b/boards/arm/olimexino_stm32/Kconfig.board
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016, I-SENSE group of ICCS
 #
-# 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 BOARD_OLIMEXINO_STM32
 	bool "OLIMEXINO-STM32 Development Board"
diff --git a/boards/arm/olimexino_stm32/Kconfig.defconfig b/boards/arm/olimexino_stm32/Kconfig.defconfig
index 073487a53..4b74459ed 100644
--- a/boards/arm/olimexino_stm32/Kconfig.defconfig
+++ b/boards/arm/olimexino_stm32/Kconfig.defconfig
@@ -2,17 +2,7 @@
 #
 # Copyright (c) 2016, I-SENSE group of ICCS
 #
-# 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 BOARD_OLIMEXINO_STM32
diff --git a/boards/arm/olimexino_stm32/board.h b/boards/arm/olimexino_stm32/board.h
index 55029f6e4..39d984a6c 100644
--- a/boards/arm/olimexino_stm32/board.h
+++ b/boards/arm/olimexino_stm32/board.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
  */
 
 #ifndef __INC_BOARD_H
diff --git a/boards/arm/qemu_cortex_m3/board.h b/boards/arm/qemu_cortex_m3/board.h
index 55029f6e4..39d984a6c 100644
--- a/boards/arm/qemu_cortex_m3/board.h
+++ b/boards/arm/qemu_cortex_m3/board.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
  */
 
 #ifndef __INC_BOARD_H
diff --git a/boards/arm/quark_se_c1000_ble/Kconfig.board b/boards/arm/quark_se_c1000_ble/Kconfig.board
index be80eb362..db947ad94 100644
--- a/boards/arm/quark_se_c1000_ble/Kconfig.board
+++ b/boards/arm/quark_se_c1000_ble/Kconfig.board
@@ -2,17 +2,7 @@
 #
 # 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
 
 config BOARD_QUARK_SE_C1000_BLE
 	bool "Quark SE C1000 Devboard - BLE Core"
diff --git a/boards/arm/quark_se_c1000_ble/Kconfig.defconfig b/boards/arm/quark_se_c1000_ble/Kconfig.defconfig
index 05571556d..464166f4e 100644
--- a/boards/arm/quark_se_c1000_ble/Kconfig.defconfig
+++ b/boards/arm/quark_se_c1000_ble/Kconfig.defconfig
@@ -2,17 +2,7 @@
 #
 # 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
 
 if BOARD_QUARK_SE_C1000_BLE
 
diff --git a/boards/arm/quark_se_c1000_ble/board.h b/boards/arm/quark_se_c1000_ble/board.h
index 66dd23fd7..65b22b46e 100644
--- a/boards/arm/quark_se_c1000_ble/board.h
+++ b/boards/arm/quark_se_c1000_ble/board.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
  */
 
 #ifndef __INC_BOARD_H
diff --git a/boards/arm/stm3210c_eval/Kconfig.board b/boards/arm/stm3210c_eval/Kconfig.board
index ee8fc10ec..f967e72c0 100644
--- a/boards/arm/stm3210c_eval/Kconfig.board
+++ b/boards/arm/stm3210c_eval/Kconfig.board
@@ -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
 #
 
 config BOARD_STM3210C_EVAL
diff --git a/boards/arm/stm3210c_eval/Kconfig.defconfig b/boards/arm/stm3210c_eval/Kconfig.defconfig
index 154c081b1..faad382d4 100644
--- a/boards/arm/stm3210c_eval/Kconfig.defconfig
+++ b/boards/arm/stm3210c_eval/Kconfig.defconfig
@@ -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 BOARD_STM3210C_EVAL
diff --git a/boards/arm/stm3210c_eval/board.h b/boards/arm/stm3210c_eval/board.h
index a9529ee4e..f7a67a47b 100644
--- a/boards/arm/stm3210c_eval/board.h
+++ b/boards/arm/stm3210c_eval/board.h
@@ -1,17 +1,7 @@
 /*
  * 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
  */
 
 #ifndef __INC_BOARD_H
diff --git a/boards/arm/stm32_mini_a15/Kconfig.board b/boards/arm/stm32_mini_a15/Kconfig.board
index abbac593c..6817a53bc 100644
--- a/boards/arm/stm32_mini_a15/Kconfig.board
+++ b/boards/arm/stm32_mini_a15/Kconfig.board
@@ -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 BOARD_STM32_MINI_A15
diff --git a/boards/arm/stm32_mini_a15/Kconfig.defconfig b/boards/arm/stm32_mini_a15/Kconfig.defconfig
index 22eda5688..46f0fec75 100644
--- a/boards/arm/stm32_mini_a15/Kconfig.defconfig
+++ b/boards/arm/stm32_mini_a15/Kconfig.defconfig
@@ -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 BOARD_STM32_MINI_A15
diff --git a/boards/arm/stm32_mini_a15/board.h b/boards/arm/stm32_mini_a15/board.h
index 55029f6e4..39d984a6c 100644
--- a/boards/arm/stm32_mini_a15/board.h
+++ b/boards/arm/stm32_mini_a15/board.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
  */
 
 #ifndef __INC_BOARD_H
diff --git a/boards/arm/v2m_beetle/Kconfig.board b/boards/arm/v2m_beetle/Kconfig.board
index 59619613a..9b5894513 100644
--- a/boards/arm/v2m_beetle/Kconfig.board
+++ b/boards/arm/v2m_beetle/Kconfig.board
@@ -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
 #
 
 # V2M (V2 = Versatile Express, M = Motherboard)
diff --git a/boards/arm/v2m_beetle/Kconfig.defconfig b/boards/arm/v2m_beetle/Kconfig.defconfig
index 1f6d447e4..27453b810 100644
--- a/boards/arm/v2m_beetle/Kconfig.defconfig
+++ b/boards/arm/v2m_beetle/Kconfig.defconfig
@@ -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 BOARD_V2M_BEETLE
diff --git a/boards/arm/v2m_beetle/Makefile b/boards/arm/v2m_beetle/Makefile
index e2c3669d3..29b19c204 100644
--- a/boards/arm/v2m_beetle/Makefile
+++ b/boards/arm/v2m_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
 #
 
 # Trick the build system into generating built-in.o even though there
diff --git a/boards/arm/v2m_beetle/board.h b/boards/arm/v2m_beetle/board.h
index 401f449cd..ed4c79ce0 100644
--- a/boards/arm/v2m_beetle/board.h
+++ b/boards/arm/v2m_beetle/board.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 __INC_BOARD_H
diff --git a/boards/arm/v2m_beetle/v2m_beetle_defconfig b/boards/arm/v2m_beetle/v2m_beetle_defconfig
index 1ec1a8c69..25e583685 100644
--- a/boards/arm/v2m_beetle/v2m_beetle_defconfig
+++ b/boards/arm/v2m_beetle/v2m_beetle_defconfig
@@ -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_ARM=y
diff --git a/boards/nios2/altera_max10/board.h b/boards/nios2/altera_max10/board.h
index 55029f6e4..39d984a6c 100644
--- a/boards/nios2/altera_max10/board.h
+++ b/boards/nios2/altera_max10/board.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
  */
 
 #ifndef __INC_BOARD_H
diff --git a/boards/nios2/qemu_nios2/board.h b/boards/nios2/qemu_nios2/board.h
index 96dcedd1c..6f45889a5 100644
--- a/boards/nios2/qemu_nios2/board.h
+++ b/boards/nios2/qemu_nios2/board.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
  */
 
 #ifndef __INC_BOARD_H
diff --git a/boards/riscv32/qemu_riscv32/board.h b/boards/riscv32/qemu_riscv32/board.h
index 8b825dc1f..4704f1ff2 100644
--- a/boards/riscv32/qemu_riscv32/board.h
+++ b/boards/riscv32/qemu_riscv32/board.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Jean-Paul Etienne <fractalclone@gmail.com>
  *
- * 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 __INC_BOARD_H
diff --git a/boards/riscv32/zedboard_pulpino/board.h b/boards/riscv32/zedboard_pulpino/board.h
index 0ef98c378..9ab9bad58 100644
--- a/boards/riscv32/zedboard_pulpino/board.h
+++ b/boards/riscv32/zedboard_pulpino/board.h
@@ -1,17 +1,7 @@
 /*
  * Copyright (c) 2016 Jean-Paul Etienne <fractalclone@gmail.com>
  *
- * 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 __INC_BOARD_H
diff --git a/boards/x86/arduino_101/board.h b/boards/x86/arduino_101/board.h
index 3b2b4fd73..c6d08b849 100644
--- a/boards/x86/arduino_101/board.h
+++ b/boards/x86/arduino_101/board.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
  */
 
 #ifndef __INC_BOARD_H
diff --git a/boards/x86/arduino_101/pinmux.c b/boards/x86/arduino_101/pinmux.c
index 20ccf5019..f3a44fd08 100644
--- a/boards/x86/arduino_101/pinmux.c
+++ b/boards/x86/arduino_101/pinmux.c
@@ -3,17 +3,7 @@
 /*
  * 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
  */
 #include <kernel.h>
 #include <board.h>
diff --git a/boards/x86/galileo/Kconfig b/boards/x86/galileo/Kconfig
index 1735c0462..42d51641f 100644
--- a/boards/x86/galileo/Kconfig
+++ b/boards/x86/galileo/Kconfig
@@ -3,17 +3,7 @@
 #
 # 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
 #
 
 if PINMUX && BOARD_GALILEO
diff --git a/boards/x86/galileo/board.h b/boards/x86/galileo/board.h
index b9f2d32ca..ed96418ea 100644
--- a/boards/x86/galileo/board.h
+++ b/boards/x86/galileo/board.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
  */
 
 #ifndef __INC_BOARD_H
diff --git a/boards/x86/galileo/pinmux.c b/boards/x86/galileo/pinmux.c
index 92b41574a..e76da0b4d 100644
--- a/boards/x86/galileo/pinmux.c
+++ b/boards/x86/galileo/pinmux.c
@@ -3,17 +3,7 @@
 /*
  * 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
  */
 
 #include <kernel.h>
diff --git a/boards/x86/galileo/pinmux_dev.c b/boards/x86/galileo/pinmux_dev.c
index d9c402243..b64592565 100644
--- a/boards/x86/galileo/pinmux_dev.c
+++ b/boards/x86/galileo/pinmux_dev.c
@@ -3,17 +3,7 @@
 /*
  * 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
  */
 
 #include <kernel.h>
diff --git a/boards/x86/galileo/pinmux_galileo.h b/boards/x86/galileo/pinmux_galileo.h
index b47452cb3..c9858e3a8 100644
--- a/boards/x86/galileo/pinmux_galileo.h
+++ b/boards/x86/galileo/pinmux_galileo.h
@@ -3,17 +3,7 @@
 /*
  * 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
  */
 
 #ifndef __PINMUX_GALILEO_PRIV_H
diff --git a/boards/x86/minnowboard/board.h b/boards/x86/minnowboard/board.h
index 55029f6e4..39d984a6c 100644
--- a/boards/x86/minnowboard/board.h
+++ b/boards/x86/minnowboard/board.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
  */
 
 #ifndef __INC_BOARD_H
diff --git a/boards/x86/qemu_x86/board.h b/boards/x86/qemu_x86/board.h
index 55029f6e4..39d984a6c 100644
--- a/boards/x86/qemu_x86/board.h
+++ b/boards/x86/qemu_x86/board.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
  */
 
 #ifndef __INC_BOARD_H
diff --git a/boards/x86/quark_d2000_crb/board.h b/boards/x86/quark_d2000_crb/board.h
index 56d16c8f3..0a37a8c46 100644
--- a/boards/x86/quark_d2000_crb/board.h
+++ b/boards/x86/quark_d2000_crb/board.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
  */
 
 #ifndef __INC_BOARD_H
diff --git a/boards/x86/quark_d2000_crb/pinmux.c b/boards/x86/quark_d2000_crb/pinmux.c
index 8dc32cbe0..6a2585548 100644
--- a/boards/x86/quark_d2000_crb/pinmux.c
+++ b/boards/x86/quark_d2000_crb/pinmux.c
@@ -6,17 +6,7 @@
 /*
  * 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/boards/x86/quark_se_c1000_devboard/board.c b/boards/x86/quark_se_c1000_devboard/board.c
index 2285f18c6..d837ef7f6 100644
--- a/boards/x86/quark_se_c1000_devboard/board.c
+++ b/boards/x86/quark_se_c1000_devboard/board.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
  */
 
 #include <kernel.h>
diff --git a/boards/x86/quark_se_c1000_devboard/board.h b/boards/x86/quark_se_c1000_devboard/board.h
index dafe8d919..ca7ed244b 100644
--- a/boards/x86/quark_se_c1000_devboard/board.h
+++ b/boards/x86/quark_se_c1000_devboard/board.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
  */
 
 #ifndef __BOARD_H__
diff --git a/boards/x86/quark_se_c1000_devboard/pinmux.c b/boards/x86/quark_se_c1000_devboard/pinmux.c
index e3e148d92..b13201c41 100644
--- a/boards/x86/quark_se_c1000_devboard/pinmux.c
+++ b/boards/x86/quark_se_c1000_devboard/pinmux.c
@@ -3,17 +3,7 @@
 /*
  * 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
  */
 
 #include <kernel.h>