diff --git a/target/linux/Makefile b/target/linux/Makefile
index 3a70b80bb3..a939d42bc0 100644
--- a/target/linux/Makefile
+++ b/target/linux/Makefile
@@ -1,9 +1,7 @@
-# 
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # Copyright (C) 2006-2007 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/target.mk
 
diff --git a/target/linux/apm821xx/Makefile b/target/linux/apm821xx/Makefile
index 4c6c586209..85467dc0ed 100644
--- a/target/linux/apm821xx/Makefile
+++ b/target/linux/apm821xx/Makefile
@@ -1,7 +1,5 @@
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 include $(TOPDIR)/rules.mk
 
 ARCH:=powerpc
diff --git a/target/linux/apm821xx/image/Makefile b/target/linux/apm821xx/image/Makefile
index 511ccefa30..3458d12d12 100644
--- a/target/linux/apm821xx/image/Makefile
+++ b/target/linux/apm821xx/image/Makefile
@@ -1,7 +1,5 @@
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/apm821xx/nand/profiles/00-default.mk b/target/linux/apm821xx/nand/profiles/00-default.mk
index 8c2203f5a9..8fcc479cff 100644
--- a/target/linux/apm821xx/nand/profiles/00-default.mk
+++ b/target/linux/apm821xx/nand/profiles/00-default.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2011 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Default
   NAME:=Default Profile
diff --git a/target/linux/apm821xx/sata/profiles/00-default.mk b/target/linux/apm821xx/sata/profiles/00-default.mk
index db48353bf2..5935c5be19 100644
--- a/target/linux/apm821xx/sata/profiles/00-default.mk
+++ b/target/linux/apm821xx/sata/profiles/00-default.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2011 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Default
   NAME:=Default Profile
diff --git a/target/linux/arc770/Makefile b/target/linux/arc770/Makefile
index 598024fcd0..296043c759 100644
--- a/target/linux/arc770/Makefile
+++ b/target/linux/arc770/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2015 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 ARCH:=arc
diff --git a/target/linux/arc770/generic/profiles/00-default.mk b/target/linux/arc770/generic/profiles/00-default.mk
index 798478b616..e089d5b4b5 100644
--- a/target/linux/arc770/generic/profiles/00-default.mk
+++ b/target/linux/arc770/generic/profiles/00-default.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2015 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Default
 	NAME:=Default Profile (all drivers)
diff --git a/target/linux/arc770/image/Makefile b/target/linux/arc770/image/Makefile
index 260757845e..172eb06744 100644
--- a/target/linux/arc770/image/Makefile
+++ b/target/linux/arc770/image/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2016 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/archs38/Makefile b/target/linux/archs38/Makefile
index dade74fee4..a9fb530aa6 100644
--- a/target/linux/archs38/Makefile
+++ b/target/linux/archs38/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2016 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 ARCH:=arc
diff --git a/target/linux/archs38/generic/profiles/00-default.mk b/target/linux/archs38/generic/profiles/00-default.mk
index 747967df94..252a8c1c9b 100644
--- a/target/linux/archs38/generic/profiles/00-default.mk
+++ b/target/linux/archs38/generic/profiles/00-default.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2016 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Default
 	NAME:=Default Profile (all drivers)
diff --git a/target/linux/archs38/image/Makefile b/target/linux/archs38/image/Makefile
index 1e0d3e99fd..e8cfb63ce1 100644
--- a/target/linux/archs38/image/Makefile
+++ b/target/linux/archs38/image/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2016 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/armvirt/Makefile b/target/linux/armvirt/Makefile
index c0cc7d2f48..0a356e5f4b 100644
--- a/target/linux/armvirt/Makefile
+++ b/target/linux/armvirt/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2017 Yousong Zhou <yszhou4tech@gmail.com>
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 BOARD:=armvirt
diff --git a/target/linux/armvirt/image/Makefile b/target/linux/armvirt/image/Makefile
index 0292dbab42..5f9ef21d65 100644
--- a/target/linux/armvirt/image/Makefile
+++ b/target/linux/armvirt/image/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2016-2017 Yousong Zhou <yszhou4tech@gmail.com>
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/at91/Makefile b/target/linux/at91/Makefile
index 4cfdff1056..22aa3320e3 100644
--- a/target/linux/at91/Makefile
+++ b/target/linux/at91/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2006-2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 ARCH:=arm
diff --git a/target/linux/at91/image/Makefile b/target/linux/at91/image/Makefile
index 25fc34eba0..e17e4d6a52 100644
--- a/target/linux/at91/image/Makefile
+++ b/target/linux/at91/image/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2006-2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/at91/modules.mk b/target/linux/at91/modules.mk
index 998c042ee1..0590afef82 100644
--- a/target/linux/at91/modules.mk
+++ b/target/linux/at91/modules.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2010 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define KernelPackage/mmc-at91
   SUBMENU:=$(OTHER_MENU)
diff --git a/target/linux/ath25/Makefile b/target/linux/ath25/Makefile
index 43ad2534f2..0426c65e4f 100644
--- a/target/linux/ath25/Makefile
+++ b/target/linux/ath25/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2006-2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 ARCH:=mips
diff --git a/target/linux/ath25/image/Makefile b/target/linux/ath25/image/Makefile
index 5a20bdb644..291520c9ec 100644
--- a/target/linux/ath25/image/Makefile
+++ b/target/linux/ath25/image/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2006-2010 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/ath25/profiles/00-default.mk b/target/linux/ath25/profiles/00-default.mk
index b40eb1b0ce..3aeb31064a 100644
--- a/target/linux/ath25/profiles/00-default.mk
+++ b/target/linux/ath25/profiles/00-default.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2011 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Default
 	NAME:=Default Profile
diff --git a/target/linux/bcm27xx/Makefile b/target/linux/bcm27xx/Makefile
index f548f9758d..7fa944559c 100644
--- a/target/linux/bcm27xx/Makefile
+++ b/target/linux/bcm27xx/Makefile
@@ -1,10 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2012-2020 OpenWrt.org
 # Copyright (C) 2017 LEDE project
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 ARCH:=arm
diff --git a/target/linux/bcm27xx/image/Makefile b/target/linux/bcm27xx/image/Makefile
index dffd4e771d..dfa160ddaa 100644
--- a/target/linux/bcm27xx/image/Makefile
+++ b/target/linux/bcm27xx/image/Makefile
@@ -1,10 +1,8 @@
-# 
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # Copyright (C) 2012-2019 OpenWrt.org
 # Copyright (C) 2016-2017 LEDE project
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/bcm27xx/modules.mk b/target/linux/bcm27xx/modules.mk
index 480509193f..ec2b4edbd2 100644
--- a/target/linux/bcm27xx/modules.mk
+++ b/target/linux/bcm27xx/modules.mk
@@ -1,8 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2019 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 include $(TOPDIR)/target/linux/bcm27xx/modules/*.mk
diff --git a/target/linux/bcm27xx/modules/hwmon.mk b/target/linux/bcm27xx/modules/hwmon.mk
index 5081cee1d3..316f0b8419 100644
--- a/target/linux/bcm27xx/modules/hwmon.mk
+++ b/target/linux/bcm27xx/modules/hwmon.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2019 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define KernelPackage/hwmon-raspberrypi
   TITLE:=Raspberry Pi voltage monitor
diff --git a/target/linux/bcm27xx/modules/i2c.mk b/target/linux/bcm27xx/modules/i2c.mk
index 15beac41e5..ba266b29f2 100644
--- a/target/linux/bcm27xx/modules/i2c.mk
+++ b/target/linux/bcm27xx/modules/i2c.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2019 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 I2C_BCM2835_MODULES:=\
   CONFIG_I2C_BCM2835:drivers/i2c/busses/i2c-bcm2835
diff --git a/target/linux/bcm27xx/modules/other.mk b/target/linux/bcm27xx/modules/other.mk
index 54e12c7bb9..2d4aa3c079 100644
--- a/target/linux/bcm27xx/modules/other.mk
+++ b/target/linux/bcm27xx/modules/other.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2019 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define KernelPackage/pwm-bcm2835
   SUBMENU:=$(OTHER_MENU)
diff --git a/target/linux/bcm27xx/modules/sound.mk b/target/linux/bcm27xx/modules/sound.mk
index a4aeb629c3..8c6f1bf49c 100644
--- a/target/linux/bcm27xx/modules/sound.mk
+++ b/target/linux/bcm27xx/modules/sound.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2019 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define KernelPackage/sound-arm-bcm2835
   TITLE:=BCM2835 ALSA driver
diff --git a/target/linux/bcm27xx/modules/spi.mk b/target/linux/bcm27xx/modules/spi.mk
index 8840852149..948978dd44 100644
--- a/target/linux/bcm27xx/modules/spi.mk
+++ b/target/linux/bcm27xx/modules/spi.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2019 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define KernelPackage/spi-bcm2835
   SUBMENU:=$(SPI_MENU)
diff --git a/target/linux/bcm27xx/modules/video.mk b/target/linux/bcm27xx/modules/video.mk
index f7286cee3c..2eff4a45d5 100644
--- a/target/linux/bcm27xx/modules/video.mk
+++ b/target/linux/bcm27xx/modules/video.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2019 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define KernelPackage/camera-bcm2835
   TITLE:=BCM2835 Camera
diff --git a/target/linux/bcm47xx/Makefile b/target/linux/bcm47xx/Makefile
index 70475a3ec5..1c3a36cef2 100644
--- a/target/linux/bcm47xx/Makefile
+++ b/target/linux/bcm47xx/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2006-2008 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 ARCH:=mipsel
diff --git a/target/linux/bcm47xx/generic/profiles/100-Broadcom-b43.mk b/target/linux/bcm47xx/generic/profiles/100-Broadcom-b43.mk
index 4c420fb299..8ff95b4dd9 100644
--- a/target/linux/bcm47xx/generic/profiles/100-Broadcom-b43.mk
+++ b/target/linux/bcm47xx/generic/profiles/100-Broadcom-b43.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2007-2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Broadcom-b43
   NAME:=Broadcom SoC, all Ethernet, BCM43xx WiFi (b43, default)
diff --git a/target/linux/bcm47xx/generic/profiles/101-Broadcom-wl.mk b/target/linux/bcm47xx/generic/profiles/101-Broadcom-wl.mk
index c3e9d20c13..12cffecdb8 100644
--- a/target/linux/bcm47xx/generic/profiles/101-Broadcom-wl.mk
+++ b/target/linux/bcm47xx/generic/profiles/101-Broadcom-wl.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2010-2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Broadcom-wl
   NAME:=Broadcom SoC, all Ethernet, BCM43xx WiFi (wl, proprietary)
diff --git a/target/linux/bcm47xx/generic/profiles/104-Broadcom-ath5k.mk b/target/linux/bcm47xx/generic/profiles/104-Broadcom-ath5k.mk
index ca5295f7e3..e66b251691 100644
--- a/target/linux/bcm47xx/generic/profiles/104-Broadcom-ath5k.mk
+++ b/target/linux/bcm47xx/generic/profiles/104-Broadcom-ath5k.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2006-2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Broadcom-ath5k
   NAME:=Broadcom SoC, all Ethernet, Atheros WiFi (ath5k)
diff --git a/target/linux/bcm47xx/generic/profiles/105-Broadcom-none.mk b/target/linux/bcm47xx/generic/profiles/105-Broadcom-none.mk
index 4497124a2e..883e028090 100644
--- a/target/linux/bcm47xx/generic/profiles/105-Broadcom-none.mk
+++ b/target/linux/bcm47xx/generic/profiles/105-Broadcom-none.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2006-2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Broadcom-none
   NAME:=Broadcom SoC, all Ethernet, No WiFi
diff --git a/target/linux/bcm47xx/generic/profiles/200-Broadcom-b44-b43.mk b/target/linux/bcm47xx/generic/profiles/200-Broadcom-b44-b43.mk
index 662a7c8e94..0231bff642 100644
--- a/target/linux/bcm47xx/generic/profiles/200-Broadcom-b44-b43.mk
+++ b/target/linux/bcm47xx/generic/profiles/200-Broadcom-b44-b43.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2007-2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Broadcom-b44-b43
   NAME:=Broadcom SoC, b44 Ethernet, BCM43xx WiFi (b43, default)
diff --git a/target/linux/bcm47xx/generic/profiles/201-Broadcom-b44-wl.mk b/target/linux/bcm47xx/generic/profiles/201-Broadcom-b44-wl.mk
index 79b7c5c000..f3ef1fb12a 100644
--- a/target/linux/bcm47xx/generic/profiles/201-Broadcom-b44-wl.mk
+++ b/target/linux/bcm47xx/generic/profiles/201-Broadcom-b44-wl.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2010-2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Broadcom-b44-wl
   NAME:=Broadcom SoC, b44 Ethernet, BCM43xx WiFi (wl, proprietary)
diff --git a/target/linux/bcm47xx/generic/profiles/204-Broadcom-b44-ath5k.mk b/target/linux/bcm47xx/generic/profiles/204-Broadcom-b44-ath5k.mk
index e9dda49d66..fd9ee6fd15 100644
--- a/target/linux/bcm47xx/generic/profiles/204-Broadcom-b44-ath5k.mk
+++ b/target/linux/bcm47xx/generic/profiles/204-Broadcom-b44-ath5k.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2006-2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Broadcom-b44-ath5k
   NAME:=Broadcom SoC, b44 Ethernet, Atheros WiFi (ath5k)
diff --git a/target/linux/bcm47xx/generic/profiles/205-Broadcom-b44-none.mk b/target/linux/bcm47xx/generic/profiles/205-Broadcom-b44-none.mk
index 0854b5041e..171f371227 100644
--- a/target/linux/bcm47xx/generic/profiles/205-Broadcom-b44-none.mk
+++ b/target/linux/bcm47xx/generic/profiles/205-Broadcom-b44-none.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2006-2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Broadcom-b44-none
   NAME:=Broadcom SoC, b44 Ethernet, No WiFi
diff --git a/target/linux/bcm47xx/generic/profiles/210-Broadcom-tg3-b43.mk b/target/linux/bcm47xx/generic/profiles/210-Broadcom-tg3-b43.mk
index a0bece914d..69c59c503f 100644
--- a/target/linux/bcm47xx/generic/profiles/210-Broadcom-tg3-b43.mk
+++ b/target/linux/bcm47xx/generic/profiles/210-Broadcom-tg3-b43.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2007-2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Broadcom-tg3-b43
   NAME:=Broadcom SoC, tg3 Ethernet, BCM43xx WiFi (b43)
diff --git a/target/linux/bcm47xx/generic/profiles/211-Broadcom-tg3-wl.mk b/target/linux/bcm47xx/generic/profiles/211-Broadcom-tg3-wl.mk
index 6946668c91..a0eeb90920 100644
--- a/target/linux/bcm47xx/generic/profiles/211-Broadcom-tg3-wl.mk
+++ b/target/linux/bcm47xx/generic/profiles/211-Broadcom-tg3-wl.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2010-2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Broadcom-tg3-wl
   NAME:=Broadcom SoC, tg3 Ethernet, BCM43xx WiFi (wl, proprietary)
diff --git a/target/linux/bcm47xx/generic/profiles/215-Broadcom-tg3-none.mk b/target/linux/bcm47xx/generic/profiles/215-Broadcom-tg3-none.mk
index a5a3b4a010..373f407e3f 100644
--- a/target/linux/bcm47xx/generic/profiles/215-Broadcom-tg3-none.mk
+++ b/target/linux/bcm47xx/generic/profiles/215-Broadcom-tg3-none.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2006-2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Broadcom-tg3-none
   NAME:=Broadcom SoC, tg3 Ethernet, no WiFi
diff --git a/target/linux/bcm47xx/generic/profiles/220-Broadcom-bgmac-b43.mk b/target/linux/bcm47xx/generic/profiles/220-Broadcom-bgmac-b43.mk
index 6ef0691a4c..4d05421c8e 100644
--- a/target/linux/bcm47xx/generic/profiles/220-Broadcom-bgmac-b43.mk
+++ b/target/linux/bcm47xx/generic/profiles/220-Broadcom-bgmac-b43.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2007-2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Broadcom-bgmac-b43
   NAME:=Broadcom SoC, bgmac Ethernet, BCM43xx WiFi (b43)
diff --git a/target/linux/bcm47xx/generic/profiles/221-Broadcom-bgmac-wl.mk b/target/linux/bcm47xx/generic/profiles/221-Broadcom-bgmac-wl.mk
index acdc20fb70..e0bc84c371 100644
--- a/target/linux/bcm47xx/generic/profiles/221-Broadcom-bgmac-wl.mk
+++ b/target/linux/bcm47xx/generic/profiles/221-Broadcom-bgmac-wl.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2010-2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Broadcom-bgmac-wl
   NAME:=Broadcom SoC, bgmac Ethernet, BCM43xx WiFi (wl, proprietary)
diff --git a/target/linux/bcm47xx/generic/profiles/225-Broadcom-bgmac-none.mk b/target/linux/bcm47xx/generic/profiles/225-Broadcom-bgmac-none.mk
index db2d1a264c..da194d828f 100644
--- a/target/linux/bcm47xx/generic/profiles/225-Broadcom-bgmac-none.mk
+++ b/target/linux/bcm47xx/generic/profiles/225-Broadcom-bgmac-none.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2006-2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Broadcom-bgmac-none
   NAME:=Broadcom SoC, bgmac Ethernet, No WiFi
diff --git a/target/linux/bcm47xx/generic/profiles/226-Broadcom-bgmac-brcsmac.mk b/target/linux/bcm47xx/generic/profiles/226-Broadcom-bgmac-brcsmac.mk
index d9dc9e7a4a..93a76dc32c 100644
--- a/target/linux/bcm47xx/generic/profiles/226-Broadcom-bgmac-brcsmac.mk
+++ b/target/linux/bcm47xx/generic/profiles/226-Broadcom-bgmac-brcsmac.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2007-2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Broadcom-bgmac-brcmsmac
   NAME:=Broadcom SoC, bgmac Ethernet, BCM43xx WiFi (brcmsmac)
diff --git a/target/linux/bcm47xx/generic/profiles/PS-1208MFG.mk b/target/linux/bcm47xx/generic/profiles/PS-1208MFG.mk
index 14ee46f200..5d2d7324b2 100644
--- a/target/linux/bcm47xx/generic/profiles/PS-1208MFG.mk
+++ b/target/linux/bcm47xx/generic/profiles/PS-1208MFG.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2007-2010 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Ps1208mfg
   NAME:=Edimax PS-1208MFG
diff --git a/target/linux/bcm47xx/image/Makefile b/target/linux/bcm47xx/image/Makefile
index e08a3125bd..2aeef178a4 100644
--- a/target/linux/bcm47xx/image/Makefile
+++ b/target/linux/bcm47xx/image/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2006-2016 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/bcm47xx/legacy/profiles/100-Broadcom-b43.mk b/target/linux/bcm47xx/legacy/profiles/100-Broadcom-b43.mk
index 50d777010b..c54f11bb89 100644
--- a/target/linux/bcm47xx/legacy/profiles/100-Broadcom-b43.mk
+++ b/target/linux/bcm47xx/legacy/profiles/100-Broadcom-b43.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2007-2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Broadcom-b43
   NAME:=Broadcom SoC, all Ethernet, BCM43xx WiFi (b43, default)
diff --git a/target/linux/bcm47xx/legacy/profiles/101-Broadcom-wl.mk b/target/linux/bcm47xx/legacy/profiles/101-Broadcom-wl.mk
index 6a4c5b0394..94129b4f55 100644
--- a/target/linux/bcm47xx/legacy/profiles/101-Broadcom-wl.mk
+++ b/target/linux/bcm47xx/legacy/profiles/101-Broadcom-wl.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2010-2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Broadcom-wl
   NAME:=Broadcom SoC, all Ethernet, BCM43xx WiFi (wl, proprietary)
diff --git a/target/linux/bcm47xx/mips74k/profiles/100-Broadcom-b43.mk b/target/linux/bcm47xx/mips74k/profiles/100-Broadcom-b43.mk
index bd3b010f69..b91179cf2a 100644
--- a/target/linux/bcm47xx/mips74k/profiles/100-Broadcom-b43.mk
+++ b/target/linux/bcm47xx/mips74k/profiles/100-Broadcom-b43.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2014 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Broadcom-mips74k-b43
   NAME:=Broadcom SoC, BCM43xx WiFi (b43)
diff --git a/target/linux/bcm47xx/mips74k/profiles/101-Broadcom-brcsmac.mk b/target/linux/bcm47xx/mips74k/profiles/101-Broadcom-brcsmac.mk
index a138ef93b0..e31b37278d 100644
--- a/target/linux/bcm47xx/mips74k/profiles/101-Broadcom-brcsmac.mk
+++ b/target/linux/bcm47xx/mips74k/profiles/101-Broadcom-brcsmac.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2014 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Broadcom-mips74k-brcmsmac
   NAME:=Broadcom SoC, BCM43xx WiFi (brcmsmac)
diff --git a/target/linux/bcm47xx/mips74k/profiles/102-Broadcom-wl.mk b/target/linux/bcm47xx/mips74k/profiles/102-Broadcom-wl.mk
index 66b13bf879..571753c472 100644
--- a/target/linux/bcm47xx/mips74k/profiles/102-Broadcom-wl.mk
+++ b/target/linux/bcm47xx/mips74k/profiles/102-Broadcom-wl.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2014 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Broadcom-mips74k-wl
   NAME:=Broadcom SoC, BCM43xx WiFi (proprietary wl)
diff --git a/target/linux/bcm47xx/mips74k/profiles/103-Broadcom-none.mk b/target/linux/bcm47xx/mips74k/profiles/103-Broadcom-none.mk
index cc4668de52..34fb3652a9 100644
--- a/target/linux/bcm47xx/mips74k/profiles/103-Broadcom-none.mk
+++ b/target/linux/bcm47xx/mips74k/profiles/103-Broadcom-none.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2014 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Broadcom-mips74k-none
   NAME:=Broadcom SoC, No WiFi
diff --git a/target/linux/bcm47xx/modules.mk b/target/linux/bcm47xx/modules.mk
index cd46901a3b..5924694a53 100644
--- a/target/linux/bcm47xx/modules.mk
+++ b/target/linux/bcm47xx/modules.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2006-2012 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define KernelPackage/bgmac
   TITLE:=Broadcom bgmac driver
diff --git a/target/linux/bcm53xx/Makefile b/target/linux/bcm53xx/Makefile
index cccfbf9282..794e6015a3 100644
--- a/target/linux/bcm53xx/Makefile
+++ b/target/linux/bcm53xx/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 ARCH:=arm
diff --git a/target/linux/bcm53xx/image/Makefile b/target/linux/bcm53xx/image/Makefile
index af690ed32a..e0bba968b6 100644
--- a/target/linux/bcm53xx/image/Makefile
+++ b/target/linux/bcm53xx/image/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/bcm53xx/modules.mk b/target/linux/bcm53xx/modules.mk
index 6432a7f577..e43231f376 100644
--- a/target/linux/bcm53xx/modules.mk
+++ b/target/linux/bcm53xx/modules.mk
@@ -1,8 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2016 Rafał Miłecki <rafal@milecki.pl>
-#
-# This is free software, licensed under the GNU General Public License v2.
-#
 
 define KernelPackage/phy-bcm-ns-usb2
   TITLE:=Broadcom Northstar USB 2.0 PHY Driver
diff --git a/target/linux/bcm53xx/profiles/100-Generic.mk b/target/linux/bcm53xx/profiles/100-Generic.mk
index b57258666e..9dc60b0a76 100644
--- a/target/linux/bcm53xx/profiles/100-Generic.mk
+++ b/target/linux/bcm53xx/profiles/100-Generic.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Generic
   NAME:=Broadcom SoC, BCM43xx WiFi (b43, brcmfmac, default)
diff --git a/target/linux/bcm63xx/Makefile b/target/linux/bcm63xx/Makefile
index d87918f0f5..e2fa6a5e23 100644
--- a/target/linux/bcm63xx/Makefile
+++ b/target/linux/bcm63xx/Makefile
@@ -1,10 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2006-2019 OpenWrt.org
 # Copyright (C) 2016 LEDE project
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 ARCH:=mips
diff --git a/target/linux/bcm63xx/image/Makefile b/target/linux/bcm63xx/image/Makefile
index d8e68862b3..822e26e993 100644
--- a/target/linux/bcm63xx/image/Makefile
+++ b/target/linux/bcm63xx/image/Makefile
@@ -1,10 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2006-2015 OpenWrt.org
 # Copyright (C) 2016 LEDE project
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/bcm63xx/modules.mk b/target/linux/bcm63xx/modules.mk
index bc244c8d7d..c329f3865a 100644
--- a/target/linux/bcm63xx/modules.mk
+++ b/target/linux/bcm63xx/modules.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2010 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define KernelPackage/pcmcia-bcm63xx
   SUBMENU:=$(PCMCIA_MENU)
diff --git a/target/linux/bcm63xx/profiles/default.mk b/target/linux/bcm63xx/profiles/default.mk
index 2df9d062ff..6928cdb764 100644
--- a/target/linux/bcm63xx/profiles/default.mk
+++ b/target/linux/bcm63xx/profiles/default.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2016 LEDE project
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Default
   NAME:=Default Profile
diff --git a/target/linux/gemini/Makefile b/target/linux/gemini/Makefile
index 7ad463506d..475151a827 100644
--- a/target/linux/gemini/Makefile
+++ b/target/linux/gemini/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2009-2018 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 ARCH:=arm
diff --git a/target/linux/gemini/image/Makefile b/target/linux/gemini/image/Makefile
index 8a326347fb..0b19828e0e 100644
--- a/target/linux/gemini/image/Makefile
+++ b/target/linux/gemini/image/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2009-2018 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/generic/image/Makefile b/target/linux/generic/image/Makefile
index e733e0a37a..56ea9f6f1e 100644
--- a/target/linux/generic/image/Makefile
+++ b/target/linux/generic/image/Makefile
@@ -1,9 +1,7 @@
-# 
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # Copyright (C) 2006-2010 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/imx6/Makefile b/target/linux/imx6/Makefile
index caf7accdfb..03fd0d4401 100644
--- a/target/linux/imx6/Makefile
+++ b/target/linux/imx6/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2013-2014 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 ARCH:=arm
diff --git a/target/linux/imx6/image/Makefile b/target/linux/imx6/image/Makefile
index 2c9d03c039..f6dc461f7d 100644
--- a/target/linux/imx6/image/Makefile
+++ b/target/linux/imx6/image/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/imx6/profiles/100-default.mk b/target/linux/imx6/profiles/100-default.mk
index 60b3ef538b..28b0f4662c 100644
--- a/target/linux/imx6/profiles/100-default.mk
+++ b/target/linux/imx6/profiles/100-default.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Default
   PRIORITY:=1
diff --git a/target/linux/kirkwood/Makefile b/target/linux/kirkwood/Makefile
index c50c03b548..94bee8ba2d 100644
--- a/target/linux/kirkwood/Makefile
+++ b/target/linux/kirkwood/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2009-2015 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 ARCH:=arm
diff --git a/target/linux/kirkwood/image/Makefile b/target/linux/kirkwood/image/Makefile
index 1e8149d3fa..cfdf8ffed6 100644
--- a/target/linux/kirkwood/image/Makefile
+++ b/target/linux/kirkwood/image/Makefile
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2009-2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
diff --git a/target/linux/lantiq/Makefile b/target/linux/lantiq/Makefile
index 926af21da2..ccaf183876 100644
--- a/target/linux/lantiq/Makefile
+++ b/target/linux/lantiq/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2007-2011 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 BOARD:=lantiq
diff --git a/target/linux/lantiq/ase/target.mk b/target/linux/lantiq/ase/target.mk
index daabbfc74a..694fe6c2a7 100644
--- a/target/linux/lantiq/ase/target.mk
+++ b/target/linux/lantiq/ase/target.mk
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2016 LEDE Project
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 ARCH:=mips
 SUBTARGET:=ase
 BOARDNAME:=Amazon-SE
diff --git a/target/linux/lantiq/image/Makefile b/target/linux/lantiq/image/Makefile
index a4ba22dfc4..c90975d098 100644
--- a/target/linux/lantiq/image/Makefile
+++ b/target/linux/lantiq/image/Makefile
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2010-2016 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 # boards missing since devicetree update
 #EASY50712 ARV3527P
diff --git a/target/linux/lantiq/modules.mk b/target/linux/lantiq/modules.mk
index 8cd720093c..14140b1095 100644
--- a/target/linux/lantiq/modules.mk
+++ b/target/linux/lantiq/modules.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2010 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 I2C_LANTIQ_MODULES:= \
   CONFIG_I2C_LANTIQ:drivers/i2c/busses/i2c-lantiq
diff --git a/target/linux/layerscape/Makefile b/target/linux/layerscape/Makefile
index e82f545525..078c8550fd 100644
--- a/target/linux/layerscape/Makefile
+++ b/target/linux/layerscape/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2016 Jiang Yutang <jiangyutang1978@gmail.com>
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 BOARD:=layerscape
diff --git a/target/linux/layerscape/armv7/target.mk b/target/linux/layerscape/armv7/target.mk
index bfc6c09d42..1730ca5637 100644
--- a/target/linux/layerscape/armv7/target.mk
+++ b/target/linux/layerscape/armv7/target.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright 2018 NXP
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 ARCH:=arm
 BOARDNAME:=ARMv7 based boards
diff --git a/target/linux/layerscape/armv8_64b/target.mk b/target/linux/layerscape/armv8_64b/target.mk
index 274a729440..c9a61701a9 100644
--- a/target/linux/layerscape/armv8_64b/target.mk
+++ b/target/linux/layerscape/armv8_64b/target.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2016 Jiang Yutang <jiangyutang1978@gmail.com>
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 ARCH:=aarch64
 BOARDNAME:=ARMv8 64-bit based boards
diff --git a/target/linux/layerscape/image/Makefile b/target/linux/layerscape/image/Makefile
index bfc4af4ca4..3c8bdea480 100644
--- a/target/linux/layerscape/image/Makefile
+++ b/target/linux/layerscape/image/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2016 Jiang Yutang <jiangyutang1978@gmail.com>
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/layerscape/image/armv7.mk b/target/linux/layerscape/image/armv7.mk
index 62921a5ef9..4ab2cec224 100644
--- a/target/linux/layerscape/image/armv7.mk
+++ b/target/linux/layerscape/image/armv7.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright 2018-2020 NXP
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Device/Default
   PROFILES := Default
diff --git a/target/linux/layerscape/image/armv8_64b.mk b/target/linux/layerscape/image/armv8_64b.mk
index a3f4428299..75d6885c6d 100644
--- a/target/linux/layerscape/image/armv8_64b.mk
+++ b/target/linux/layerscape/image/armv8_64b.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright 2018-2020 NXP
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Device/Default
   PROFILES := Default
diff --git a/target/linux/layerscape/modules.mk b/target/linux/layerscape/modules.mk
index 4d713b597e..11e75ee749 100644
--- a/target/linux/layerscape/modules.mk
+++ b/target/linux/layerscape/modules.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) Jiang Yutang <jiangyutang1978@gmail.com>
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define KernelPackage/ahci-qoriq
   SUBMENU:=$(BLOCK_MENU)
diff --git a/target/linux/malta/Makefile b/target/linux/malta/Makefile
index 6b492dcbf0..f347ee3b5c 100644
--- a/target/linux/malta/Makefile
+++ b/target/linux/malta/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2010-2011 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 BOARD:=malta
diff --git a/target/linux/malta/image/Makefile b/target/linux/malta/image/Makefile
index 72e7eab807..514ff58427 100644
--- a/target/linux/malta/image/Makefile
+++ b/target/linux/malta/image/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2010 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/mediatek/image/Makefile b/target/linux/mediatek/image/Makefile
index 36ecdd5a9b..45e83cece5 100644
--- a/target/linux/mediatek/image/Makefile
+++ b/target/linux/mediatek/image/Makefile
@@ -1,10 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2012-2015 OpenWrt.org
 # Copyright (C) 2016-2017 LEDE project
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/mpc85xx/Makefile b/target/linux/mpc85xx/Makefile
index 5f3d2736b0..393bf97fe3 100644
--- a/target/linux/mpc85xx/Makefile
+++ b/target/linux/mpc85xx/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2010 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 ARCH:=powerpc
diff --git a/target/linux/mpc85xx/image/Makefile b/target/linux/mpc85xx/image/Makefile
index 618b8c7135..b9582a2552 100644
--- a/target/linux/mpc85xx/image/Makefile
+++ b/target/linux/mpc85xx/image/Makefile
@@ -1,7 +1,5 @@
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/mpc85xx/p1010/profiles/00-default.mk b/target/linux/mpc85xx/p1010/profiles/00-default.mk
index 5356aaa939..32cf2627f5 100644
--- a/target/linux/mpc85xx/p1010/profiles/00-default.mk
+++ b/target/linux/mpc85xx/p1010/profiles/00-default.mk
@@ -1,7 +1,4 @@
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 define Profile/Default
   NAME:=Default Profile
diff --git a/target/linux/mpc85xx/p1020/profiles/00-default.mk b/target/linux/mpc85xx/p1020/profiles/00-default.mk
index 67d43020a2..4235421457 100644
--- a/target/linux/mpc85xx/p1020/profiles/00-default.mk
+++ b/target/linux/mpc85xx/p1020/profiles/00-default.mk
@@ -1,7 +1,4 @@
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 define Profile/Default
   NAME:=Default Profile
diff --git a/target/linux/mpc85xx/p2020/profiles/00-default.mk b/target/linux/mpc85xx/p2020/profiles/00-default.mk
index c9ea67df08..711997d422 100644
--- a/target/linux/mpc85xx/p2020/profiles/00-default.mk
+++ b/target/linux/mpc85xx/p2020/profiles/00-default.mk
@@ -1,7 +1,4 @@
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 define Profile/Default
   NAME:=Default Profile
diff --git a/target/linux/mvebu/Makefile b/target/linux/mvebu/Makefile
index b8055891ec..f30369298e 100644
--- a/target/linux/mvebu/Makefile
+++ b/target/linux/mvebu/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2012-2015 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 BOARD:=mvebu
diff --git a/target/linux/mvebu/cortexa53/target.mk b/target/linux/mvebu/cortexa53/target.mk
index fe89d08ffa..fcf658c398 100644
--- a/target/linux/mvebu/cortexa53/target.mk
+++ b/target/linux/mvebu/cortexa53/target.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2017 Hauke Mehrtens
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 include $(TOPDIR)/rules.mk
 
diff --git a/target/linux/mvebu/cortexa72/target.mk b/target/linux/mvebu/cortexa72/target.mk
index 540ef1104f..8601077b38 100644
--- a/target/linux/mvebu/cortexa72/target.mk
+++ b/target/linux/mvebu/cortexa72/target.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2018 Sartura Ltd.
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 include $(TOPDIR)/rules.mk
 
diff --git a/target/linux/mvebu/cortexa9/target.mk b/target/linux/mvebu/cortexa9/target.mk
index cdd4d86e49..02697fa62d 100644
--- a/target/linux/mvebu/cortexa9/target.mk
+++ b/target/linux/mvebu/cortexa9/target.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2017 Hauke Mehrtens
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 include $(TOPDIR)/rules.mk
 
diff --git a/target/linux/mvebu/image/Makefile b/target/linux/mvebu/image/Makefile
index 77548d683e..871b622ae2 100644
--- a/target/linux/mvebu/image/Makefile
+++ b/target/linux/mvebu/image/Makefile
@@ -1,10 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2012-2016 OpenWrt.org
 # Copyright (C) 2016 LEDE-project.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 JFFS2_BLOCKSIZE = 128k
 
diff --git a/target/linux/mvebu/image/cortexa9.mk b/target/linux/mvebu/image/cortexa9.mk
index 0839ad2809..3d398800a3 100644
--- a/target/linux/mvebu/image/cortexa9.mk
+++ b/target/linux/mvebu/image/cortexa9.mk
@@ -1,10 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2012-2016 OpenWrt.org
 # Copyright (C) 2016 LEDE-project.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Device/buffalo_ls421de
   $(Device/NAND-128K)
diff --git a/target/linux/mxs/Makefile b/target/linux/mxs/Makefile
index 6071329371..b3f8e44e2c 100644
--- a/target/linux/mxs/Makefile
+++ b/target/linux/mxs/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2013-2014 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 ARCH:=arm
diff --git a/target/linux/mxs/image/Makefile b/target/linux/mxs/image/Makefile
index 7c332cd7c2..bcb6001bac 100644
--- a/target/linux/mxs/image/Makefile
+++ b/target/linux/mxs/image/Makefile
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2013-2015 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
diff --git a/target/linux/mxs/profiles/01-duckbill.mk b/target/linux/mxs/profiles/01-duckbill.mk
index 5224c3cfed..d7202a4422 100644
--- a/target/linux/mxs/profiles/01-duckbill.mk
+++ b/target/linux/mxs/profiles/01-duckbill.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/duckbill
   NAME:=I2SE Duckbill boards
diff --git a/target/linux/mxs/profiles/02-olinuxino-maxi.mk b/target/linux/mxs/profiles/02-olinuxino-maxi.mk
index bce0a44a57..3029e2a210 100644
--- a/target/linux/mxs/profiles/02-olinuxino-maxi.mk
+++ b/target/linux/mxs/profiles/02-olinuxino-maxi.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/olinuxino-maxi
   NAME:=Olimex OLinuXino Maxi/Mini boards
diff --git a/target/linux/mxs/profiles/03-olinuxino-micro.mk b/target/linux/mxs/profiles/03-olinuxino-micro.mk
index 62de50151d..31a767188c 100644
--- a/target/linux/mxs/profiles/03-olinuxino-micro.mk
+++ b/target/linux/mxs/profiles/03-olinuxino-micro.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/olinuxino-micro
   NAME:=Olimex OLinuXino Micro/Nano boards
diff --git a/target/linux/octeon/Makefile b/target/linux/octeon/Makefile
index fc73fd4e20..9df2a59aa7 100644
--- a/target/linux/octeon/Makefile
+++ b/target/linux/octeon/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 ARCH:=mips64
diff --git a/target/linux/octeon/image/Makefile b/target/linux/octeon/image/Makefile
index b91c262447..8e97280479 100644
--- a/target/linux/octeon/image/Makefile
+++ b/target/linux/octeon/image/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2009-2010 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/octeon/profiles/000-Generic.mk b/target/linux/octeon/profiles/000-Generic.mk
index d4c5767577..6d5aa4e2bd 100644
--- a/target/linux/octeon/profiles/000-Generic.mk
+++ b/target/linux/octeon/profiles/000-Generic.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Default
   NAME:=Default Profile
diff --git a/target/linux/octeontx/Makefile b/target/linux/octeontx/Makefile
index ad9fb72e35..da21291d41 100644
--- a/target/linux/octeontx/Makefile
+++ b/target/linux/octeontx/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2018 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 ARCH:=aarch64
diff --git a/target/linux/octeontx/image/Makefile b/target/linux/octeontx/image/Makefile
index 203f0ea5c6..c564e6f4bc 100644
--- a/target/linux/octeontx/image/Makefile
+++ b/target/linux/octeontx/image/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2018 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/omap/Makefile b/target/linux/omap/Makefile
index 419aff76db..e7d0c117b1 100644
--- a/target/linux/omap/Makefile
+++ b/target/linux/omap/Makefile
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2012-2014 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 include $(TOPDIR)/rules.mk
 
diff --git a/target/linux/omap/image/Makefile b/target/linux/omap/image/Makefile
index 2861565ea6..b01d341102 100644
--- a/target/linux/omap/image/Makefile
+++ b/target/linux/omap/image/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2012-2014 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/omap/profiles/00-default.mk b/target/linux/omap/profiles/00-default.mk
index 37c0761029..4a326d095e 100644
--- a/target/linux/omap/profiles/00-default.mk
+++ b/target/linux/omap/profiles/00-default.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2013 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Default
   NAME:=Default Profile
diff --git a/target/linux/oxnas/ox820/profiles/00-default.mk b/target/linux/oxnas/ox820/profiles/00-default.mk
index c68d7cd9d6..c785dd29b3 100644
--- a/target/linux/oxnas/ox820/profiles/00-default.mk
+++ b/target/linux/oxnas/ox820/profiles/00-default.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2016 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Default
 	NAME:=Default Profile
diff --git a/target/linux/pistachio/Makefile b/target/linux/pistachio/Makefile
index ab3f58eb6b..4e305fdae2 100644
--- a/target/linux/pistachio/Makefile
+++ b/target/linux/pistachio/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2017 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 ARCH:=mipsel
diff --git a/target/linux/pistachio/image/Makefile b/target/linux/pistachio/image/Makefile
index 5d2e42f139..7f4e2236c5 100644
--- a/target/linux/pistachio/image/Makefile
+++ b/target/linux/pistachio/image/Makefile
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2017 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
diff --git a/target/linux/pistachio/profiles/00-default.mk b/target/linux/pistachio/profiles/00-default.mk
index f40be3d667..db6fb28845 100644
--- a/target/linux/pistachio/profiles/00-default.mk
+++ b/target/linux/pistachio/profiles/00-default.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2017 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Default
   NAME:=Default Profile
diff --git a/target/linux/ramips/Makefile b/target/linux/ramips/Makefile
index 904f05f91f..d0b564e69d 100644
--- a/target/linux/ramips/Makefile
+++ b/target/linux/ramips/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2008-2011 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 ARCH:=mipsel
diff --git a/target/linux/ramips/image/Makefile b/target/linux/ramips/image/Makefile
index 21bd135a62..5937970a37 100644
--- a/target/linux/ramips/image/Makefile
+++ b/target/linux/ramips/image/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2008-2011 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/ramips/modules.mk b/target/linux/ramips/modules.mk
index 6fd3b51c45..404be364c2 100644
--- a/target/linux/ramips/modules.mk
+++ b/target/linux/ramips/modules.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2006-2016 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 OTHER_MENU:=Other modules
 
diff --git a/target/linux/realtek/Makefile b/target/linux/realtek/Makefile
index 02eefe26fb..5159a40c4c 100644
--- a/target/linux/realtek/Makefile
+++ b/target/linux/realtek/Makefile
@@ -1,6 +1,5 @@
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 include $(TOPDIR)/rules.mk
 
 ARCH:=mips
diff --git a/target/linux/realtek/image/Makefile b/target/linux/realtek/image/Makefile
index 8ad7ad1b5d..29350d8ae5 100644
--- a/target/linux/realtek/image/Makefile
+++ b/target/linux/realtek/image/Makefile
@@ -1,6 +1,5 @@
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/realtek/profiles/00-default.mk b/target/linux/realtek/profiles/00-default.mk
index 7f2053da55..942b0f1496 100644
--- a/target/linux/realtek/profiles/00-default.mk
+++ b/target/linux/realtek/profiles/00-default.mk
@@ -1,6 +1,4 @@
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+# SPDX-License-Identifier: GPL-2.0-only
 
 define Profile/Default
 	NAME:=Default Profile
diff --git a/target/linux/rockchip/Makefile b/target/linux/rockchip/Makefile
index 0758e3f535..72eab8462e 100644
--- a/target/linux/rockchip/Makefile
+++ b/target/linux/rockchip/Makefile
@@ -1,7 +1,5 @@
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 include $(TOPDIR)/rules.mk
 
 BOARD:=rockchip
diff --git a/target/linux/rockchip/image/Makefile b/target/linux/rockchip/image/Makefile
index ea6d78ac86..46a57b07d4 100644
--- a/target/linux/rockchip/image/Makefile
+++ b/target/linux/rockchip/image/Makefile
@@ -1,7 +1,5 @@
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+# SPDX-License-Identifier: GPL-2.0-only
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/rockchip/image/armv8.mk b/target/linux/rockchip/image/armv8.mk
index 80e5359e58..ecee301be7 100644
--- a/target/linux/rockchip/image/armv8.mk
+++ b/target/linux/rockchip/image/armv8.mk
@@ -1,9 +1,6 @@
-# 
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # Copyright (C) 2020 Tobias Maedel
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Device/friendlyarm_nanopi-r2s
   DEVICE_VENDOR := FriendlyARM
diff --git a/target/linux/sunxi/Makefile b/target/linux/sunxi/Makefile
index 58654b3b15..6b92599928 100644
--- a/target/linux/sunxi/Makefile
+++ b/target/linux/sunxi/Makefile
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2013-2016 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 include $(TOPDIR)/rules.mk
 
diff --git a/target/linux/sunxi/cortexa53/target.mk b/target/linux/sunxi/cortexa53/target.mk
index 435d88f5f4..9e3a4064be 100644
--- a/target/linux/sunxi/cortexa53/target.mk
+++ b/target/linux/sunxi/cortexa53/target.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2017 Hauke Mehrtens
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 include $(TOPDIR)/rules.mk
 
diff --git a/target/linux/sunxi/cortexa7/target.mk b/target/linux/sunxi/cortexa7/target.mk
index 238eb17ac1..95315fd4a4 100644
--- a/target/linux/sunxi/cortexa7/target.mk
+++ b/target/linux/sunxi/cortexa7/target.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2017 Hauke Mehrtens
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 include $(TOPDIR)/rules.mk
 
diff --git a/target/linux/sunxi/cortexa8/target.mk b/target/linux/sunxi/cortexa8/target.mk
index d7d18f6ca4..cf30ca7877 100644
--- a/target/linux/sunxi/cortexa8/target.mk
+++ b/target/linux/sunxi/cortexa8/target.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2017 Hauke Mehrtens
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 include $(TOPDIR)/rules.mk
 
diff --git a/target/linux/sunxi/image/Makefile b/target/linux/sunxi/image/Makefile
index 572c0597e8..738585accc 100644
--- a/target/linux/sunxi/image/Makefile
+++ b/target/linux/sunxi/image/Makefile
@@ -1,10 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2013-2016 OpenWrt.org
 # Copyright (C) 2016 Yousong Zhou
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/sunxi/image/cortexa53.mk b/target/linux/sunxi/image/cortexa53.mk
index a567d1fd1e..03f927f4f7 100644
--- a/target/linux/sunxi/image/cortexa53.mk
+++ b/target/linux/sunxi/image/cortexa53.mk
@@ -1,10 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2013-2016 OpenWrt.org
 # Copyright (C) 2016 Yousong Zhou
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Device/sun50i
   SUNXI_DTS_DIR := allwinner/
diff --git a/target/linux/sunxi/image/cortexa7.mk b/target/linux/sunxi/image/cortexa7.mk
index f9d2e4bda4..8f6dcd757e 100644
--- a/target/linux/sunxi/image/cortexa7.mk
+++ b/target/linux/sunxi/image/cortexa7.mk
@@ -1,10 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2013-2019 OpenWrt.org
 # Copyright (C) 2016 Yousong Zhou
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Device/cubietech_cubieboard2
   DEVICE_VENDOR := Cubietech
diff --git a/target/linux/sunxi/image/cortexa8.mk b/target/linux/sunxi/image/cortexa8.mk
index 643b3d4b1e..9f55774379 100644
--- a/target/linux/sunxi/image/cortexa8.mk
+++ b/target/linux/sunxi/image/cortexa8.mk
@@ -1,10 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2013-2016 OpenWrt.org
 # Copyright (C) 2016 Yousong Zhou
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Device/cubietech_a10-cubieboard
   DEVICE_VENDOR := Cubietech
diff --git a/target/linux/sunxi/modules.mk b/target/linux/sunxi/modules.mk
index 0a01e1494f..449a5ed252 100644
--- a/target/linux/sunxi/modules.mk
+++ b/target/linux/sunxi/modules.mk
@@ -1,8 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2013-2016 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
 
 define KernelPackage/rtc-sunxi
     SUBMENU:=$(OTHER_MENU)
diff --git a/target/linux/sunxi/profiles/00-default.mk b/target/linux/sunxi/profiles/00-default.mk
index 7dc791ecde..0541087a48 100644
--- a/target/linux/sunxi/profiles/00-default.mk
+++ b/target/linux/sunxi/profiles/00-default.mk
@@ -1,9 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2017 Yousong Zhou
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
 
 define Profile/Default
   NAME:=Default Profile (all drivers)
diff --git a/target/linux/tegra/Makefile b/target/linux/tegra/Makefile
index ee69c7b2d8..3b15ebd4be 100644
--- a/target/linux/tegra/Makefile
+++ b/target/linux/tegra/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2017-2019 Tomasz Maciej Nowak <tmn505@gmail.com>
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 ARCH := arm
diff --git a/target/linux/tegra/image/Makefile b/target/linux/tegra/image/Makefile
index 8fee8c9b41..66a4be0fce 100644
--- a/target/linux/tegra/image/Makefile
+++ b/target/linux/tegra/image/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2017-2019 Tomasz Maciej Nowak <tmn505@gmail.com>
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/uml/Makefile b/target/linux/uml/Makefile
index 4d0d86e524..e11cdc21fe 100644
--- a/target/linux/uml/Makefile
+++ b/target/linux/uml/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2006-2011 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 # UML only makes sense on linux
diff --git a/target/linux/uml/image/Makefile b/target/linux/uml/image/Makefile
index c8ed874d15..45ab0cfbcd 100644
--- a/target/linux/uml/image/Makefile
+++ b/target/linux/uml/image/Makefile
@@ -1,9 +1,7 @@
-# 
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # Copyright (C) 2006-2010 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/x86/Makefile b/target/linux/x86/Makefile
index 62c5d94438..e7ab2c7b2e 100644
--- a/target/linux/x86/Makefile
+++ b/target/linux/x86/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2006-2011 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 ARCH:=i386
diff --git a/target/linux/x86/image/Makefile b/target/linux/x86/image/Makefile
index efad9782b3..05ad059bc6 100644
--- a/target/linux/x86/image/Makefile
+++ b/target/linux/x86/image/Makefile
@@ -1,9 +1,7 @@
-# 
-# Copyright (C) 2006-2012 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
+# SPDX-License-Identifier: GPL-2.0-only
 #
+# Copyright (C) 2006-2020 OpenWrt.org
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk
 
diff --git a/target/linux/x86/modules.mk b/target/linux/x86/modules.mk
index 61ab400dc9..24a4384577 100644
--- a/target/linux/x86/modules.mk
+++ b/target/linux/x86/modules.mk
@@ -1,8 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2017 Cezary Jackiewicz <cezary@eko.one.pll>
-#
-# This is free software, licensed under the GNU General Public License v2.
-#
 
 define KernelPackage/sound-cs5535audio
   TITLE:=CS5535/CS5536 Audio Controller
diff --git a/target/linux/zynq/Makefile b/target/linux/zynq/Makefile
index ac3989ba30..f9c1a90b48 100644
--- a/target/linux/zynq/Makefile
+++ b/target/linux/zynq/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2015 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 
 ARCH:=arm
diff --git a/target/linux/zynq/image/Makefile b/target/linux/zynq/image/Makefile
index 7cec38ca68..3eb508d7c7 100644
--- a/target/linux/zynq/image/Makefile
+++ b/target/linux/zynq/image/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2015 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/image.mk