74 files changed, 148 insertions, 0 deletions

diff --git a/sys/arm/at91/at91.c b/sys/arm/at91/at91.c
index 75b40b20699a4..10fb9201dc142 100644
--- a/sys/arm/at91/at91.c
+++ b/sys/arm/at91/at91.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2005 Olivier Houchard.  All rights reserved.
  * Copyright (c) 2010 Greg Ansley.  All rights reserved.
  *
diff --git a/sys/arm/at91/at91_aic.c b/sys/arm/at91/at91_aic.c
index a6756da1dfa63..454be965ef77a 100644
--- a/sys/arm/at91/at91_aic.c
+++ b/sys/arm/at91/at91_aic.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2014 Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_aicreg.h b/sys/arm/at91/at91_aicreg.h
index f46f234877401..8ce6644f57fdb 100644
--- a/sys/arm/at91/at91_aicreg.h
+++ b/sys/arm/at91/at91_aicreg.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2009 Sylvestre Gallon. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_cfata.c b/sys/arm/at91/at91_cfata.c
index 8c6049d5b01c4..de027e3e40f67 100644
--- a/sys/arm/at91/at91_cfata.c
+++ b/sys/arm/at91/at91_cfata.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2008 Deglitch Networks, Stanislav Sedov
  * All rights reserved.
  *
diff --git a/sys/arm/at91/at91_gpio.h b/sys/arm/at91/at91_gpio.h
index 935e43733e2b2..21b67475f7f03 100644
--- a/sys/arm/at91/at91_gpio.h
+++ b/sys/arm/at91/at91_gpio.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2014 M. Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_machdep.c b/sys/arm/at91/at91_machdep.c
index 2dddd065f348d..5f3dc7fc4459b 100644
--- a/sys/arm/at91/at91_machdep.c
+++ b/sys/arm/at91/at91_machdep.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 1994-1998 Mark Brinicombe.
  * Copyright (c) 1994 Brini.
  * All rights reserved.
diff --git a/sys/arm/at91/at91_mci.c b/sys/arm/at91/at91_mci.c
index 78dff0d703163..e7b734e981fb2 100644
--- a/sys/arm/at91/at91_mci.c
+++ b/sys/arm/at91/at91_mci.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2006 Bernd Walter.  All rights reserved.
  * Copyright (c) 2006 M. Warner Losh.  All rights reserved.
  * Copyright (c) 2010 Greg Ansley.  All rights reserved.
diff --git a/sys/arm/at91/at91_mcireg.h b/sys/arm/at91/at91_mcireg.h
index 1831c0dbfc741..cf70dcad410d8 100644
--- a/sys/arm/at91/at91_mcireg.h
+++ b/sys/arm/at91/at91_mcireg.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2006 Berndt Walter.  All rights reserved.
  * Copyright (c) 2006 M. Warner Losh.  All rights reserved.
  *
diff --git a/sys/arm/at91/at91_pdcreg.h b/sys/arm/at91/at91_pdcreg.h
index d15c22a7b1146..88389e002e95a 100644
--- a/sys/arm/at91/at91_pdcreg.h
+++ b/sys/arm/at91/at91_pdcreg.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2006 M. Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_pio.c b/sys/arm/at91/at91_pio.c
index 20f5002db2d7b..dc667e9e63f91 100644
--- a/sys/arm/at91/at91_pio.c
+++ b/sys/arm/at91/at91_pio.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2006 M. Warner Losh.  All rights reserved.
  * Copyright (C) 2012 Ian Lepore. All rights reserved.
  *
diff --git a/sys/arm/at91/at91_pio_sam9g45.h b/sys/arm/at91/at91_pio_sam9g45.h
index 6045536ee6aad..1fc38e43e3241 100644
--- a/sys/arm/at91/at91_pio_sam9g45.h
+++ b/sys/arm/at91/at91_pio_sam9g45.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  *  ----------------------------------------------------------------------------
  *          ATMEL Microcontroller Software Support  -  ROUSSET  -
  *  ----------------------------------------------------------------------------
diff --git a/sys/arm/at91/at91_pioreg.h b/sys/arm/at91/at91_pioreg.h
index 7869d9d05a302..4b1f22d895820 100644
--- a/sys/arm/at91/at91_pioreg.h
+++ b/sys/arm/at91/at91_pioreg.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2006 M. Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_piovar.h b/sys/arm/at91/at91_piovar.h
index 7b83d07248628..4a314e83873ac 100644
--- a/sys/arm/at91/at91_piovar.h
+++ b/sys/arm/at91/at91_piovar.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2006 M. Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_pit.c b/sys/arm/at91/at91_pit.c
index a48af88239192..d4373e2137888 100644
--- a/sys/arm/at91/at91_pit.c
+++ b/sys/arm/at91/at91_pit.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2009 Gallon Sylvestre.  All rights reserved.
  * Copyright (c) 2010 Greg Ansley.  All rights reserved.
  *
diff --git a/sys/arm/at91/at91_pitreg.h b/sys/arm/at91/at91_pitreg.h
index 5e87e397255a2..f7095aa6b2e75 100644
--- a/sys/arm/at91/at91_pitreg.h
+++ b/sys/arm/at91/at91_pitreg.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2009 Sylvestre Gallon.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_pmc.c b/sys/arm/at91/at91_pmc.c
index 10b124890f964..54596e49f1196 100644
--- a/sys/arm/at91/at91_pmc.c
+++ b/sys/arm/at91/at91_pmc.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2006 M. Warner Losh.  All rights reserved.
  * Copyright (c) 2010 Greg Ansley.  All rights reserved.
  *
diff --git a/sys/arm/at91/at91_pmcreg.h b/sys/arm/at91/at91_pmcreg.h
index 65846a3fb9ba4..020be6772420a 100644
--- a/sys/arm/at91/at91_pmcreg.h
+++ b/sys/arm/at91/at91_pmcreg.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2005 M. Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_pmcvar.h b/sys/arm/at91/at91_pmcvar.h
index 700eba18706ef..850ec653cf02a 100644
--- a/sys/arm/at91/at91_pmcvar.h
+++ b/sys/arm/at91/at91_pmcvar.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2005 M. Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_rst.c b/sys/arm/at91/at91_rst.c
index 48f781ac05338..0c9bb281367f2 100644
--- a/sys/arm/at91/at91_rst.c
+++ b/sys/arm/at91/at91_rst.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2010 Greg Ansley.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_rstreg.h b/sys/arm/at91/at91_rstreg.h
index ee64f140ff68f..5af38fbaa79e5 100644
--- a/sys/arm/at91/at91_rstreg.h
+++ b/sys/arm/at91/at91_rstreg.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2009 Greg Ansley.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_rtc.c b/sys/arm/at91/at91_rtc.c
index 7bb80b94bd1dc..3933f1d8902c0 100644
--- a/sys/arm/at91/at91_rtc.c
+++ b/sys/arm/at91/at91_rtc.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2006 M. Warner Losh.  All rights reserved.
  * Copyright (c) 2012 Ian Lepore.  All rights reserved.
  *
diff --git a/sys/arm/at91/at91_rtcreg.h b/sys/arm/at91/at91_rtcreg.h
index 923db0aeb582d..b493c1e648cd6 100644
--- a/sys/arm/at91/at91_rtcreg.h
+++ b/sys/arm/at91/at91_rtcreg.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2006 M. Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_sdramc.c b/sys/arm/at91/at91_sdramc.c
index 3136db6a091ed..954beaa3af499 100644
--- a/sys/arm/at91/at91_sdramc.c
+++ b/sys/arm/at91/at91_sdramc.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2014 Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_shdwc.c b/sys/arm/at91/at91_shdwc.c
index 92d56440e7659..720ef30468f4d 100644
--- a/sys/arm/at91/at91_shdwc.c
+++ b/sys/arm/at91/at91_shdwc.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2014 Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_smc.c b/sys/arm/at91/at91_smc.c
index 2d59d169a76d5..3d4421786f3c0 100644
--- a/sys/arm/at91/at91_smc.c
+++ b/sys/arm/at91/at91_smc.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2014 M. Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_smc.h b/sys/arm/at91/at91_smc.h
index f571c46b1862f..fe46da9074f0f 100644
--- a/sys/arm/at91/at91_smc.h
+++ b/sys/arm/at91/at91_smc.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2014 M. Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_spi.c b/sys/arm/at91/at91_spi.c
index 5a1386089d8f2..c813dccb5bb89 100644
--- a/sys/arm/at91/at91_spi.c
+++ b/sys/arm/at91/at91_spi.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2006 M. Warner Losh.
  * Copyright (c) 2011-2012 Ian Lepore.
  * All rights reserved.
diff --git a/sys/arm/at91/at91_spireg.h b/sys/arm/at91/at91_spireg.h
index 251564f3d286b..8c6fc2839bcb8 100644
--- a/sys/arm/at91/at91_spireg.h
+++ b/sys/arm/at91/at91_spireg.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2006 M. Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_ssc.c b/sys/arm/at91/at91_ssc.c
index d79020b8b493f..435380a88576f 100644
--- a/sys/arm/at91/at91_ssc.c
+++ b/sys/arm/at91/at91_ssc.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2006 M. Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_sscreg.h b/sys/arm/at91/at91_sscreg.h
index f411f4606144b..ae1eb800bcd88 100644
--- a/sys/arm/at91/at91_sscreg.h
+++ b/sys/arm/at91/at91_sscreg.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2006 M. Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_st.c b/sys/arm/at91/at91_st.c
index 07ee24d546845..cad0c314b7c2f 100644
--- a/sys/arm/at91/at91_st.c
+++ b/sys/arm/at91/at91_st.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2005 Olivier Houchard.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_streg.h b/sys/arm/at91/at91_streg.h
index 48a63c3f0ca1f..771e10ae143c5 100644
--- a/sys/arm/at91/at91_streg.h
+++ b/sys/arm/at91/at91_streg.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2005 M. Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_tcb.c b/sys/arm/at91/at91_tcb.c
index 5db1d3c4f74e7..44d2289cf91cb 100644
--- a/sys/arm/at91/at91_tcb.c
+++ b/sys/arm/at91/at91_tcb.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2014 Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_twi.c b/sys/arm/at91/at91_twi.c
index a0926800356cb..e547c1c226c03 100644
--- a/sys/arm/at91/at91_twi.c
+++ b/sys/arm/at91/at91_twi.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2006 M. Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_twiio.h b/sys/arm/at91/at91_twiio.h
index 0a24e57c0ad14..98074557d008a 100644
--- a/sys/arm/at91/at91_twiio.h
+++ b/sys/arm/at91/at91_twiio.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2006 M. Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_twireg.h b/sys/arm/at91/at91_twireg.h
index 5f59b22febf76..78e694a7943a6 100644
--- a/sys/arm/at91/at91_twireg.h
+++ b/sys/arm/at91/at91_twireg.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2006 M. Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_usartreg.h b/sys/arm/at91/at91_usartreg.h
index 71b8ed4b15cbe..d3e7031c439d0 100644
--- a/sys/arm/at91/at91_usartreg.h
+++ b/sys/arm/at91/at91_usartreg.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2005 Olivier Houchard.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_wdt.c b/sys/arm/at91/at91_wdt.c
index dd0887dd905ed..8c38ecaee8b89 100644
--- a/sys/arm/at91/at91_wdt.c
+++ b/sys/arm/at91/at91_wdt.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2010 Greg Ansley.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91_wdtreg.h b/sys/arm/at91/at91_wdtreg.h
index 1c8dd892c14ac..9ff0440d1607e 100644
--- a/sys/arm/at91/at91_wdtreg.h
+++ b/sys/arm/at91/at91_wdtreg.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2005 Gallon Sylvestre.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91board.h b/sys/arm/at91/at91board.h
index 16763d57ea382..80b7decc7a766 100644
--- a/sys/arm/at91/at91board.h
+++ b/sys/arm/at91/at91board.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2008 Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91reg.h b/sys/arm/at91/at91reg.h
index 35e14f5fc0837..fd7c7cf5aa7a0 100644
--- a/sys/arm/at91/at91reg.h
+++ b/sys/arm/at91/at91reg.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2009 Greg Ansley  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91rm9200.c b/sys/arm/at91/at91rm9200.c
index d350117f1dad9..2a136151e8da9 100644
--- a/sys/arm/at91/at91rm9200.c
+++ b/sys/arm/at91/at91rm9200.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2005 Olivier Houchard.  All rights reserved.
  * Copyright (c) 2010 Greg Ansley.  All rights reserved.
  *
diff --git a/sys/arm/at91/at91rm9200_devices.c b/sys/arm/at91/at91rm9200_devices.c
index bc29cc18babb5..a31445e993148 100644
--- a/sys/arm/at91/at91rm9200_devices.c
+++ b/sys/arm/at91/at91rm9200_devices.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2012 M. Warner Losh.  All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91rm9200var.h b/sys/arm/at91/at91rm9200var.h
index 156320eba7578..6f4dcef0abf05 100644
--- a/sys/arm/at91/at91rm9200var.h
+++ b/sys/arm/at91/at91rm9200var.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2012 M. Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91rm92reg.h b/sys/arm/at91/at91rm92reg.h
index 16fc82c06ebbe..a1956d4c0a33f 100644
--- a/sys/arm/at91/at91rm92reg.h
+++ b/sys/arm/at91/at91rm92reg.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2005 Olivier Houchard.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91sam9260.c b/sys/arm/at91/at91sam9260.c
index 95a3c3f8a1c32..575c3e7d588cb 100644
--- a/sys/arm/at91/at91sam9260.c
+++ b/sys/arm/at91/at91sam9260.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2005 Olivier Houchard.  All rights reserved.
  * Copyright (c) 2010 Greg Ansley.  All rights reserved.
  *
diff --git a/sys/arm/at91/at91sam9260reg.h b/sys/arm/at91/at91sam9260reg.h
index 1609ed17e869c..3f5ed332a349d 100644
--- a/sys/arm/at91/at91sam9260reg.h
+++ b/sys/arm/at91/at91sam9260reg.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2010 Greg Ansley.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91sam9g20.c b/sys/arm/at91/at91sam9g20.c
index 3c17e3aadabca..5658f08a23eb7 100644
--- a/sys/arm/at91/at91sam9g20.c
+++ b/sys/arm/at91/at91sam9g20.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2005 Olivier Houchard.  All rights reserved.
  * Copyright (c) 2010 Greg Ansley.  All rights reserved.
  *
diff --git a/sys/arm/at91/at91sam9g20reg.h b/sys/arm/at91/at91sam9g20reg.h
index d29dfa5ef57c2..e0d53600d950d 100644
--- a/sys/arm/at91/at91sam9g20reg.h
+++ b/sys/arm/at91/at91sam9g20reg.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2009 Sylvestre Gallon.  All rights reserved.
  * Copyright (c) 2010 Greg Ansley.  All rights reserved.
  *
diff --git a/sys/arm/at91/at91sam9g45.c b/sys/arm/at91/at91sam9g45.c
index c3a26d58f4997..fb4024cc7897a 100644
--- a/sys/arm/at91/at91sam9g45.c
+++ b/sys/arm/at91/at91sam9g45.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2005 Olivier Houchard.  All rights reserved.
  * Copyright (c) 2010 Greg Ansley.  All rights reserved.
  * Copyright (c) 2012 Andrew Turner.  All rights reserved.
diff --git a/sys/arm/at91/at91sam9g45reg.h b/sys/arm/at91/at91sam9g45reg.h
index 0dc31beea9bec..79620fbd7b83f 100644
--- a/sys/arm/at91/at91sam9g45reg.h
+++ b/sys/arm/at91/at91sam9g45reg.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2009 Sylvestre Gallon.  All rights reserved.
  * Copyright (c) 2010 Greg Ansley.  All rights reserved.
  * Copyright (c) 2012 Andrew Turner.  All rights reserved.
diff --git a/sys/arm/at91/at91sam9x5.c b/sys/arm/at91/at91sam9x5.c
index 9fe7104740b0e..9b2459e9e9859 100644
--- a/sys/arm/at91/at91sam9x5.c
+++ b/sys/arm/at91/at91sam9x5.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2005 Olivier Houchard.  All rights reserved.
  * Copyright (c) 2010 Greg Ansley.  All rights reserved.
  * Copyright (c) 2012 M. Warner Losh..  All rights reserved.
diff --git a/sys/arm/at91/at91sam9x5reg.h b/sys/arm/at91/at91sam9x5reg.h
index dd777f9a6b2d9..b0af4a9bfd320 100644
--- a/sys/arm/at91/at91sam9x5reg.h
+++ b/sys/arm/at91/at91sam9x5reg.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2009 Sylvestre Gallon.  All rights reserved.
  * Copyright (c) 2010 Greg Ansley.  All rights reserved.
  * Copyright (c) 2012 M. Warener Losh.  All rights reserved.
diff --git a/sys/arm/at91/at91soc.c b/sys/arm/at91/at91soc.c
index 7031e83260470..520a8597ffc46 100644
--- a/sys/arm/at91/at91soc.c
+++ b/sys/arm/at91/at91soc.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2012 Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91soc.h b/sys/arm/at91/at91soc.h
index e2f4d41ae2197..ad48f817c5b7e 100644
--- a/sys/arm/at91/at91soc.h
+++ b/sys/arm/at91/at91soc.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2012 Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/at91var.h b/sys/arm/at91/at91var.h
index 46227a0dd999b..84c898fbf4533 100644
--- a/sys/arm/at91/at91var.h
+++ b/sys/arm/at91/at91var.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2005 Olivier Houchard.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/board_bwct.c b/sys/arm/at91/board_bwct.c
index 0515b21098f85..fd6bdbaf0b4c4 100644
--- a/sys/arm/at91/board_bwct.c
+++ b/sys/arm/at91/board_bwct.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2005-2008 Olivier Houchard.  All rights reserved.
  * Copyright (c) 2005-2012 Warner Losh.  All rights reserved.
  *
diff --git a/sys/arm/at91/board_eb9200.c b/sys/arm/at91/board_eb9200.c
index 23f914a3c2a29..8fe8bce0bc48c 100644
--- a/sys/arm/at91/board_eb9200.c
+++ b/sys/arm/at91/board_eb9200.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2005-2008 Olivier Houchard.  All rights reserved.
  * Copyright (c) 2005-2012 Warner Losh.  All rights reserved.
  *
diff --git a/sys/arm/at91/board_ethernut5.c b/sys/arm/at91/board_ethernut5.c
index 96beebac677a7..54f78d460ebcc 100644
--- a/sys/arm/at91/board_ethernut5.c
+++ b/sys/arm/at91/board_ethernut5.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2012 Marius Strobl <marius@FreeBSD.org>
  * All rights reserved.
  *
diff --git a/sys/arm/at91/board_hl200.c b/sys/arm/at91/board_hl200.c
index d3ac4fe16c91e..b594b0c18438a 100644
--- a/sys/arm/at91/board_hl200.c
+++ b/sys/arm/at91/board_hl200.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2005-2008 Olivier Houchard.  All rights reserved.
  * Copyright (c) 2005-2012 Warner Losh.  All rights reserved.
  *
diff --git a/sys/arm/at91/board_hl201.c b/sys/arm/at91/board_hl201.c
index 66dbf368f4b63..81c8488e5232e 100644
--- a/sys/arm/at91/board_hl201.c
+++ b/sys/arm/at91/board_hl201.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2005-2008 Olivier Houchard.  All rights reserved.
  * Copyright (c) 2005-2008 Warner Losh.  All rights reserved.
  *
diff --git a/sys/arm/at91/board_kb920x.c b/sys/arm/at91/board_kb920x.c
index 1f35705297d88..17ae3d96d432e 100644
--- a/sys/arm/at91/board_kb920x.c
+++ b/sys/arm/at91/board_kb920x.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2005-2008 Olivier Houchard.  All rights reserved.
  * Copyright (c) 2005-2012 Warner Losh.  All rights reserved.
  *
diff --git a/sys/arm/at91/board_qila9g20.c b/sys/arm/at91/board_qila9g20.c
index 4c94b2ba51bc1..e5a3db3283998 100644
--- a/sys/arm/at91/board_qila9g20.c
+++ b/sys/arm/at91/board_qila9g20.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2009 Greg Ansley.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/board_sam9260ek.c b/sys/arm/at91/board_sam9260ek.c
index e3210afb1086e..4c61a667fa601 100644
--- a/sys/arm/at91/board_sam9260ek.c
+++ b/sys/arm/at91/board_sam9260ek.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2012 Marius Strobl <marius@FreeBSD.org>
  * All rights reserved.
  *
diff --git a/sys/arm/at91/board_sam9g20ek.c b/sys/arm/at91/board_sam9g20ek.c
index 918aea047a045..c35f9b4e76a8f 100644
--- a/sys/arm/at91/board_sam9g20ek.c
+++ b/sys/arm/at91/board_sam9g20ek.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2009 Greg Ansley.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/board_sam9x25ek.c b/sys/arm/at91/board_sam9x25ek.c
index a9874ff9ce9fb..194f2d76d16db 100644
--- a/sys/arm/at91/board_sam9x25ek.c
+++ b/sys/arm/at91/board_sam9x25ek.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2009 Greg Ansley.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/board_sn9g45.c b/sys/arm/at91/board_sn9g45.c
index eb1980e00cc4c..6bc60036f8b36 100644
--- a/sys/arm/at91/board_sn9g45.c
+++ b/sys/arm/at91/board_sn9g45.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2009 Greg Ansley.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/board_tsc4370.c b/sys/arm/at91/board_tsc4370.c
index 9c0658bac387f..65198de087f5d 100644
--- a/sys/arm/at91/board_tsc4370.c
+++ b/sys/arm/at91/board_tsc4370.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2005-2008 Olivier Houchard.  All rights reserved.
  * Copyright (c) 2005-2012 Warner Losh.  All rights reserved.
  * Copyright (c) 2007-2014 Ian Lepore.  All rights reserved.
diff --git a/sys/arm/at91/if_ate.c b/sys/arm/at91/if_ate.c
index 8f742048b078e..fa4c06385b72b 100644
--- a/sys/arm/at91/if_ate.c
+++ b/sys/arm/at91/if_ate.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2006 M. Warner Losh.  All rights reserved.
  * Copyright (c) 2009 Greg Ansley.  All rights reserved.
  *
diff --git a/sys/arm/at91/if_atereg.h b/sys/arm/at91/if_atereg.h
index c6cbbcfda7986..8440e2c17450f 100644
--- a/sys/arm/at91/if_atereg.h
+++ b/sys/arm/at91/if_atereg.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2006 M. Warner Losh.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/if_macb.c b/sys/arm/at91/if_macb.c
index f0709a3335a17..66e9068ffd98f 100644
--- a/sys/arm/at91/if_macb.c
+++ b/sys/arm/at91/if_macb.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2010 Yohanes Nugroho <yohanes@gmail.com>
  * All rights reserved.
  *
diff --git a/sys/arm/at91/uart_bus_at91usart.c b/sys/arm/at91/uart_bus_at91usart.c
index 9d57244c1fc32..d466966013076 100644
--- a/sys/arm/at91/uart_bus_at91usart.c
+++ b/sys/arm/at91/uart_bus_at91usart.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2005 Olivier Houchard.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
diff --git a/sys/arm/at91/uart_cpu_at91usart.c b/sys/arm/at91/uart_cpu_at91usart.c
index 39f146cc56987..eff6812304926 100644
--- a/sys/arm/at91/uart_cpu_at91usart.c
+++ b/sys/arm/at91/uart_cpu_at91usart.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2003 Marcel Moolenaar
  * Copyright (c) 2006 M. Warner Losh
  * All rights reserved.
diff --git a/sys/arm/at91/uart_dev_at91usart.c b/sys/arm/at91/uart_dev_at91usart.c
index 4065db33040c2..36dec45a6fd44 100644
--- a/sys/arm/at91/uart_dev_at91usart.c
+++ b/sys/arm/at91/uart_dev_at91usart.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2005 M. Warner Losh
  * Copyright (c) 2005 Olivier Houchard
  * Copyright (c) 2012 Ian Lepore