diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/PeripheralPins.h b/targets/TARGET_GigaDevice/TARGET_GD32F30X/PeripheralPins.h
index dbc4765591..14fe0e8621 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/PeripheralPins.h
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/PeripheralPins.h
@@ -1,6 +1,8 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 GigaDevice Semiconductor Inc.
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/PortNames.h b/targets/TARGET_GigaDevice/TARGET_GD32F30X/PortNames.h
index 2b0fa3b506..773bed473d 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/PortNames.h
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/PortNames.h
@@ -1,6 +1,8 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 GigaDevice Semiconductor Inc.
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/TATGET_GD32F307VG/PeripheralNames.h b/targets/TARGET_GigaDevice/TARGET_GD32F30X/TATGET_GD32F307VG/PeripheralNames.h
index caceadedad..f0b4879373 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/TATGET_GD32F307VG/PeripheralNames.h
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/TATGET_GD32F307VG/PeripheralNames.h
@@ -1,6 +1,8 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 GigaDevice Semiconductor Inc.
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/TATGET_GD32F307VG/PeripheralPins.c b/targets/TARGET_GigaDevice/TARGET_GD32F30X/TATGET_GD32F307VG/PeripheralPins.c
index f74acfa9a9..4ab1a73a09 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/TATGET_GD32F307VG/PeripheralPins.c
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/TATGET_GD32F307VG/PeripheralPins.c
@@ -1,6 +1,8 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 GigaDevice Semiconductor Inc.
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/TATGET_GD32F307VG/PinNames.h b/targets/TARGET_GigaDevice/TARGET_GD32F30X/TATGET_GD32F307VG/PinNames.h
index 6ce3ace621..f870517512 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/TATGET_GD32F307VG/PinNames.h
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/TATGET_GD32F307VG/PinNames.h
@@ -1,6 +1,8 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 GigaDevice Semiconductor Inc.
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/TATGET_GD32F307VG/device/cmsis.h b/targets/TARGET_GigaDevice/TARGET_GD32F30X/TATGET_GD32F307VG/device/cmsis.h
index f84c8f6187..c7db9cbf17 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/TATGET_GD32F307VG/device/cmsis.h
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/TATGET_GD32F307VG/device/cmsis.h
@@ -1,8 +1,33 @@
-/* mbed Microcontroller Library - CMSIS
- * Copyright (C) 2009-2018 ARM Limited. All rights reserved.
- * 
- * A generic CMSIS include header, pulling in GD32F307VG specifics
- */
+/* mbed Microcontroller Library
+ * A generic CMSIS include header
+
+    Copyright (c) 2018, GigaDevice Semiconductor Inc. All rights reserved.
+
+    SPDX-License-Identifier: BSD-3-Clause
+
+    Redistribution and use in source and binary forms, with or without modification, 
+are permitted provided that the following conditions are met:
+
+    1. Redistributions of source code must retain the above copyright notice, this 
+       list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright notice, 
+       this list of conditions and the following disclaimer in the documentation 
+       and/or other materials provided with the distribution.
+    3. Neither the name of the copyright holder nor the names of its contributors 
+       may be used to endorse or promote products derived from this software without 
+       specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
+IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
+WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 
+OF SUCH DAMAGE.
+*/
 
 #ifndef MBED_CMSIS_H
 #define MBED_CMSIS_H
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/TATGET_GD32F307VG/device/cmsis_nvic.h b/targets/TARGET_GigaDevice/TARGET_GD32F30X/TATGET_GD32F307VG/device/cmsis_nvic.h
index d6e638561a..3cea459539 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/TATGET_GD32F307VG/device/cmsis_nvic.h
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/TATGET_GD32F307VG/device/cmsis_nvic.h
@@ -4,6 +4,8 @@
  * Copyright (c) 2011 ARM Limited. All rights reserved.
  * All rights reserved.
  *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/TATGET_GD32F307VG/device/hal_tick.h b/targets/TARGET_GigaDevice/TARGET_GD32F30X/TATGET_GD32F307VG/device/hal_tick.h
index a2ae383c79..e6cdebe6b4 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/TATGET_GD32F307VG/device/hal_tick.h
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/TATGET_GD32F307VG/device/hal_tick.h
@@ -1,6 +1,8 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 GigaDevice Semiconductor Inc.
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/analogin_api.c b/targets/TARGET_GigaDevice/TARGET_GD32F30X/analogin_api.c
index f68bdc4603..6b61d2286a 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/analogin_api.c
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/analogin_api.c
@@ -1,6 +1,8 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 GigaDevice Semiconductor Inc.
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/analogout_api.c b/targets/TARGET_GigaDevice/TARGET_GD32F30X/analogout_api.c
index b587b4deca..e37eb6e232 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/analogout_api.c
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/analogout_api.c
@@ -1,6 +1,8 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 GigaDevice Semiconductor Inc.
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/can_api.c b/targets/TARGET_GigaDevice/TARGET_GD32F30X/can_api.c
index ac2155490f..b404a05ffd 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/can_api.c
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/can_api.c
@@ -1,6 +1,8 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 GigaDevice Semiconductor Inc.
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/device.h b/targets/TARGET_GigaDevice/TARGET_GD32F30X/device.h
index 88638fe2e3..ceedbdd746 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/device.h
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/device.h
@@ -3,6 +3,8 @@
 /* mbed Microcontroller Library
 * Copyright (c) 2006-2018 ARM Limited
 *
+* SPDX-License-Identifier: Apache-2.0
+*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/flash_api.c b/targets/TARGET_GigaDevice/TARGET_GD32F30X/flash_api.c
index 783b937f47..dc865d6ce6 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/flash_api.c
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/flash_api.c
@@ -1,6 +1,8 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 GigaDevice Semiconductor Inc.
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/gpio_api.c b/targets/TARGET_GigaDevice/TARGET_GD32F30X/gpio_api.c
index 83fd9e8f7f..18d4f148e0 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/gpio_api.c
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/gpio_api.c
@@ -1,6 +1,8 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 GigaDevice Semiconductor Inc.
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/gpio_irq_api.c b/targets/TARGET_GigaDevice/TARGET_GD32F30X/gpio_irq_api.c
index 90539dda9c..c48633977e 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/gpio_irq_api.c
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/gpio_irq_api.c
@@ -1,6 +1,8 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 GigaDevice Semiconductor Inc.
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/i2c_api.c b/targets/TARGET_GigaDevice/TARGET_GD32F30X/i2c_api.c
index 8f0e64d459..d7fb82c7e2 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/i2c_api.c
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/i2c_api.c
@@ -1,6 +1,8 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 GigaDevice Semiconductor Inc.
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/mbed_overrides.c b/targets/TARGET_GigaDevice/TARGET_GD32F30X/mbed_overrides.c
index 5b186f2550..c2f14a7256 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/mbed_overrides.c
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/mbed_overrides.c
@@ -1,5 +1,7 @@
 /* mbed Microcontroller Library
- * Copyright (c) 2006-2018 ARM Limited
+ * Copyright (c) 2018 GigaDevice Semiconductor Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/objects.h b/targets/TARGET_GigaDevice/TARGET_GD32F30X/objects.h
index 01931bb23c..f2ed68a521 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/objects.h
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/objects.h
@@ -1,6 +1,8 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 GigaDevice Semiconductor Inc.
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/pinmap.c b/targets/TARGET_GigaDevice/TARGET_GD32F30X/pinmap.c
index 18049fb4dd..eeed668420 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/pinmap.c
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/pinmap.c
@@ -1,6 +1,8 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 GigaDevice Semiconductor Inc.
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/port_api.c b/targets/TARGET_GigaDevice/TARGET_GD32F30X/port_api.c
index 0cbc783664..75f959be15 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/port_api.c
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/port_api.c
@@ -1,6 +1,8 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 GigaDevice Semiconductor Inc.
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/pwmout_api.c b/targets/TARGET_GigaDevice/TARGET_GD32F30X/pwmout_api.c
index d039fac919..af380c2974 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/pwmout_api.c
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/pwmout_api.c
@@ -1,6 +1,8 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 GigaDevice Semiconductor Inc.
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/rtc_api.c b/targets/TARGET_GigaDevice/TARGET_GD32F30X/rtc_api.c
index 0fd075cd25..cd42dedcde 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/rtc_api.c
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/rtc_api.c
@@ -1,6 +1,8 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 GigaDevice Semiconductor Inc.
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/serial_api.c b/targets/TARGET_GigaDevice/TARGET_GD32F30X/serial_api.c
index e2b313f028..0289f516f8 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/serial_api.c
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/serial_api.c
@@ -1,6 +1,8 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 GigaDevice Semiconductor Inc.
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/sleep.c b/targets/TARGET_GigaDevice/TARGET_GD32F30X/sleep.c
index 6974556619..94fc71e6dc 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/sleep.c
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/sleep.c
@@ -1,6 +1,8 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 GigaDevice Semiconductor Inc.
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/spi_api.c b/targets/TARGET_GigaDevice/TARGET_GD32F30X/spi_api.c
index c3ea711a0d..469d2376aa 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/spi_api.c
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/spi_api.c
@@ -1,6 +1,8 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 GigaDevice Semiconductor Inc.
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/targets/TARGET_GigaDevice/TARGET_GD32F30X/us_ticker.c b/targets/TARGET_GigaDevice/TARGET_GD32F30X/us_ticker.c
index 049237b268..ae7b017306 100644
--- a/targets/TARGET_GigaDevice/TARGET_GD32F30X/us_ticker.c
+++ b/targets/TARGET_GigaDevice/TARGET_GD32F30X/us_ticker.c
@@ -1,6 +1,8 @@
 /* mbed Microcontroller Library
  * Copyright (c) 2018 GigaDevice Semiconductor Inc.
  *
+ * SPDX-License-Identifier: Apache-2.0
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/targets/TARGET_GigaDevice/mbed_rtx.h b/targets/TARGET_GigaDevice/mbed_rtx.h
index 881db2e58c..ebc5784a87 100644
--- a/targets/TARGET_GigaDevice/mbed_rtx.h
+++ b/targets/TARGET_GigaDevice/mbed_rtx.h
@@ -1,5 +1,7 @@
 /* mbed Microcontroller Library
- * Copyright (c) 2018 ARM Limited
+ * Copyright (c) 2009-2018 ARM Limited
+ *
+ * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.