diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 5f16ac1583c5..2676ced4d901 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -1,10 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0
 # This file is included by the global makefile so that you can add your own
 # architecture-specific flags and dependencies.
 #
-# This file is subject to the terms and conditions of the GNU General Public
-# License.  See the file "COPYING" in the main directory of this archive
-# for more details.
-#
 # Copyright (C) 1994 by Linus Torvalds
 # Changes for PPC by Gary Thomas
 # Rewritten by Cort Dougan and Paul Mackerras
diff --git a/arch/powerpc/boot/44x.h b/arch/powerpc/boot/44x.h
index 02563443788a..9b15e59522d6 100644
--- a/arch/powerpc/boot/44x.h
+++ b/arch/powerpc/boot/44x.h
@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * PowerPC 44x related functions
  *
  * Copyright 2007 David Gibson, IBM Corporation.
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2.  This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
  */
 #ifndef _PPC_BOOT_44X_H_
 #define _PPC_BOOT_44X_H_
diff --git a/arch/powerpc/boot/4xx.h b/arch/powerpc/boot/4xx.h
index 7dc5d45361bc..77f15d124c81 100644
--- a/arch/powerpc/boot/4xx.h
+++ b/arch/powerpc/boot/4xx.h
@@ -1,12 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * PowerPC 4xx related functions
  *
  * Copyright 2007 IBM Corporation.
  * Josh Boyer <jwboyer@linux.vnet.ibm.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2.  This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
  */
 #ifndef _POWERPC_BOOT_4XX_H_
 #define _POWERPC_BOOT_4XX_H_
diff --git a/arch/powerpc/boot/crtsavres.S b/arch/powerpc/boot/crtsavres.S
index 085fb2b9a8b8..25e924459dcc 100644
--- a/arch/powerpc/boot/crtsavres.S
+++ b/arch/powerpc/boot/crtsavres.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Special support for eabi and SVR4
  *
@@ -7,11 +8,6 @@
  *
  * Based on gcc/config/rs6000/crtsavres.asm from gcc
  *
- * This file is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2, or (at your option) any
- * later version.
- *
  * In addition to the permissions in the GNU General Public License, the
  * Free Software Foundation gives you unlimited permission to link the
  * compiled version of this file with other programs, and to distribute
@@ -20,16 +16,6 @@
  * respects; for example, they cover modification of the file, and
  * distribution when not linked into another program.)
  *
- * This file is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; see the file COPYING.  If not, write to
- * the Free Software Foundation, 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- *
  *    As a special exception, if you link this library with files
  *    compiled with GCC to produce an executable, this does not cause
  *    the resulting executable to be covered by the GNU General Public License.
diff --git a/arch/powerpc/boot/dummy.c b/arch/powerpc/boot/dummy.c
index 31dbf45bf99c..3f9ccbf52783 100644
--- a/arch/powerpc/boot/dummy.c
+++ b/arch/powerpc/boot/dummy.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 int main(void)
 {
 	return 0;
diff --git a/arch/powerpc/boot/install.sh b/arch/powerpc/boot/install.sh
index 14473150ddb4..a03ab59984a3 100644
--- a/arch/powerpc/boot/install.sh
+++ b/arch/powerpc/boot/install.sh
@@ -1,8 +1,5 @@
 #!/bin/sh
-#
-# This file is subject to the terms and conditions of the GNU General Public
-# License.  See the file "COPYING" in the main directory of this archive
-# for more details.
+# SPDX-License-Identifier: GPL-2.0
 #
 # Copyright (C) 1995 by Linus Torvalds
 #
diff --git a/arch/powerpc/boot/ops.h b/arch/powerpc/boot/ops.h
index 6455fc9a244f..250d2079ebe5 100644
--- a/arch/powerpc/boot/ops.h
+++ b/arch/powerpc/boot/ops.h
@@ -1,12 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Global definition of all the bootwrapper operations.
  *
  * Author: Mark A. Greer <mgreer@mvista.com>
  *
- * 2006 (c) MontaVista Software, Inc.  This file is licensed under
- * the terms of the GNU General Public License version 2.  This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
+ * 2006 (c) MontaVista Software, Inc.
  */
 #ifndef _PPC_BOOT_OPS_H_
 #define _PPC_BOOT_OPS_H_
diff --git a/arch/powerpc/boot/serial.c b/arch/powerpc/boot/serial.c
index 54d2522be485..c6d32a8c3612 100644
--- a/arch/powerpc/boot/serial.c
+++ b/arch/powerpc/boot/serial.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Generic serial console support
  *
@@ -6,10 +7,7 @@
  * Code in serial_edit_cmdline() copied from <file:arch/ppc/boot/simple/misc.c>
  * and was written by Matt Porter <mporter@kernel.crashing.org>.
  *
- * 2001,2006 (c) MontaVista Software, Inc.  This file is licensed under
- * the terms of the GNU General Public License version 2.  This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
+ * 2001,2006 (c) MontaVista Software, Inc.
  */
 #include <stdarg.h>
 #include <stddef.h>
diff --git a/arch/powerpc/boot/simple_alloc.c b/arch/powerpc/boot/simple_alloc.c
index 65ec135d0157..267d6524caac 100644
--- a/arch/powerpc/boot/simple_alloc.c
+++ b/arch/powerpc/boot/simple_alloc.c
@@ -1,12 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Implement primitive realloc(3) functionality.
  *
  * Author: Mark A. Greer <mgreer@mvista.com>
  *
- * 2006 (c) MontaVista, Software, Inc.  This file is licensed under
- * the terms of the GNU General Public License version 2.  This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
+ * 2006 (c) MontaVista, Software, Inc.
  */
 
 #include <stddef.h>
diff --git a/arch/powerpc/include/asm/8xx_immap.h b/arch/powerpc/include/asm/8xx_immap.h
index bdf0563ba423..0cd91d52e3fd 100644
--- a/arch/powerpc/include/asm/8xx_immap.h
+++ b/arch/powerpc/include/asm/8xx_immap.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * MPC8xx Internal Memory Map
  * Copyright (c) 1997 Dan Malek (dmalek@jlc.net)
diff --git a/arch/powerpc/include/asm/asm-compat.h b/arch/powerpc/include/asm/asm-compat.h
index 2b736d9fbb1b..a6cdaf40d7b4 100644
--- a/arch/powerpc/include/asm/asm-compat.h
+++ b/arch/powerpc/include/asm/asm-compat.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_POWERPC_ASM_COMPAT_H
 #define _ASM_POWERPC_ASM_COMPAT_H
 
diff --git a/arch/powerpc/include/asm/asm-const.h b/arch/powerpc/include/asm/asm-const.h
index bfb3c3534877..922ba500c3f2 100644
--- a/arch/powerpc/include/asm/asm-const.h
+++ b/arch/powerpc/include/asm/asm-const.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_POWERPC_ASM_CONST_H
 #define _ASM_POWERPC_ASM_CONST_H
 
diff --git a/arch/powerpc/include/asm/asm-offsets.h b/arch/powerpc/include/asm/asm-offsets.h
index d370ee36a182..9f8535716392 100644
--- a/arch/powerpc/include/asm/asm-offsets.h
+++ b/arch/powerpc/include/asm/asm-offsets.h
@@ -1 +1,2 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #include <generated/asm-offsets.h>
diff --git a/arch/powerpc/include/asm/cpm.h b/arch/powerpc/include/asm/cpm.h
index ce483b0f8a4d..475781aa71c5 100644
--- a/arch/powerpc/include/asm/cpm.h
+++ b/arch/powerpc/include/asm/cpm.h
@@ -1 +1,2 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #include <soc/fsl/cpm.h>
diff --git a/arch/powerpc/include/asm/dtl.h b/arch/powerpc/include/asm/dtl.h
index 1625888f27ef..1368c2963dfd 100644
--- a/arch/powerpc/include/asm/dtl.h
+++ b/arch/powerpc/include/asm/dtl.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_POWERPC_DTL_H
 #define _ASM_POWERPC_DTL_H
 
diff --git a/arch/powerpc/include/asm/edac.h b/arch/powerpc/include/asm/edac.h
index 5571e23d253e..cec2b744cac1 100644
--- a/arch/powerpc/include/asm/edac.h
+++ b/arch/powerpc/include/asm/edac.h
@@ -1,12 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * PPC EDAC common defs
  *
  * Author: Dave Jiang <djiang@mvista.com>
  *
- * 2007 (c) MontaVista Software, Inc. This file is licensed under
- * the terms of the GNU General Public License version 2. This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
+ * 2007 (c) MontaVista Software, Inc.
  */
 #ifndef ASM_EDAC_H
 #define ASM_EDAC_H
diff --git a/arch/powerpc/include/asm/ehv_pic.h b/arch/powerpc/include/asm/ehv_pic.h
index dc7d48e3ea90..28a341409ef5 100644
--- a/arch/powerpc/include/asm/ehv_pic.h
+++ b/arch/powerpc/include/asm/ehv_pic.h
@@ -1,11 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * EHV_PIC private definitions and structure.
  *
  * Copyright 2008-2010 Freescale Semiconductor, Inc.
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2.  This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
  */
 #ifndef __EHV_PIC_H__
 #define __EHV_PIC_H__
diff --git a/arch/powerpc/include/asm/emergency-restart.h b/arch/powerpc/include/asm/emergency-restart.h
index 3711bd9d50bd..ba702050dced 100644
--- a/arch/powerpc/include/asm/emergency-restart.h
+++ b/arch/powerpc/include/asm/emergency-restart.h
@@ -1 +1,2 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #include <asm-generic/emergency-restart.h>
diff --git a/arch/powerpc/include/asm/epapr_hcalls.h b/arch/powerpc/include/asm/epapr_hcalls.h
index c99ba08a408d..1ff3e9006c5f 100644
--- a/arch/powerpc/include/asm/epapr_hcalls.h
+++ b/arch/powerpc/include/asm/epapr_hcalls.h
@@ -1,40 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0+ OR BSD */
 /*
  * ePAPR hcall interface
  *
  * Copyright 2008-2011 Freescale Semiconductor, Inc.
  *
  * Author: Timur Tabi <timur@freescale.com>
- *
- * This file is provided under a dual BSD/GPL license.  When using or
- * redistributing this file, you may do so under either license.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *     * Redistributions of source code must retain the above copyright
- *       notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above copyright
- *       notice, this list of conditions and the following disclaimer in the
- *       documentation and/or other materials provided with the distribution.
- *     * Neither the name of Freescale Semiconductor nor the
- *       names of its contributors may be used to endorse or promote products
- *       derived from this software without specific prior written permission.
- *
- *
- * ALTERNATIVELY, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") as published by the Free Software
- * Foundation, either version 2 of that License or (at your option) any
- * later version.
- *
- * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 /* A "hypercall" is an "sc 1" instruction.  This header file provides C
diff --git a/arch/powerpc/include/asm/fixmap.h b/arch/powerpc/include/asm/fixmap.h
index a832aeafe560..d3566d6ddf5e 100644
--- a/arch/powerpc/include/asm/fixmap.h
+++ b/arch/powerpc/include/asm/fixmap.h
@@ -1,10 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * fixmap.h: compile-time virtual memory allocation
  *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
  * Copyright (C) 1998 Ingo Molnar
  *
  * Copyright 2008 Freescale Semiconductor Inc.
diff --git a/arch/powerpc/include/asm/floppy.h b/arch/powerpc/include/asm/floppy.h
index f8ce178b43b7..caa670f5b18e 100644
--- a/arch/powerpc/include/asm/floppy.h
+++ b/arch/powerpc/include/asm/floppy.h
@@ -1,10 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Architecture specific parts of the Floppy driver
  *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
  * Copyright (C) 1995
  */
 #ifndef __ASM_POWERPC_FLOPPY_H
diff --git a/arch/powerpc/include/asm/fs_pd.h b/arch/powerpc/include/asm/fs_pd.h
index 8def56ec05c6..92012ff65f4d 100644
--- a/arch/powerpc/include/asm/fs_pd.h
+++ b/arch/powerpc/include/asm/fs_pd.h
@@ -1,12 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Platform information definitions.
  *
  * 2006 (c) MontaVista Software, Inc.
  * Vitaly Bordug <vbordug@ru.mvista.com>
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
  */
 
 #ifndef FS_PD_H
diff --git a/arch/powerpc/include/asm/fsl_hcalls.h b/arch/powerpc/include/asm/fsl_hcalls.h
index b889d13547fd..e1a780a8aed2 100644
--- a/arch/powerpc/include/asm/fsl_hcalls.h
+++ b/arch/powerpc/include/asm/fsl_hcalls.h
@@ -1,40 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0+ OR BSD */
 /*
  * Freescale hypervisor call interface
  *
  * Copyright 2008-2010 Freescale Semiconductor, Inc.
  *
  * Author: Timur Tabi <timur@freescale.com>
- *
- * This file is provided under a dual BSD/GPL license.  When using or
- * redistributing this file, you may do so under either license.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *     * Redistributions of source code must retain the above copyright
- *       notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above copyright
- *       notice, this list of conditions and the following disclaimer in the
- *       documentation and/or other materials provided with the distribution.
- *     * Neither the name of Freescale Semiconductor nor the
- *       names of its contributors may be used to endorse or promote products
- *       derived from this software without specific prior written permission.
- *
- *
- * ALTERNATIVELY, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") as published by the Free Software
- * Foundation, either version 2 of that License or (at your option) any
- * later version.
- *
- * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef _FSL_HCALLS_H
diff --git a/arch/powerpc/include/asm/hydra.h b/arch/powerpc/include/asm/hydra.h
index d024447283a0..f61afdc597a3 100644
--- a/arch/powerpc/include/asm/hydra.h
+++ b/arch/powerpc/include/asm/hydra.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  *  include/asm-ppc/hydra.h -- Mac I/O `Hydra' definitions
  *
@@ -14,10 +15,6 @@
  *  You can obtain paper copies of this book from computer bookstores or by
  *  writing Morgan Kaufmann Publishers, Inc., 340 Pine Street, Sixth Floor, San
  *  Francisco, CA 94104. Reference ISBN 1-55860-393-X.
- *
- *  This file is subject to the terms and conditions of the GNU General Public
- *  License.  See the file COPYING in the main directory of this archive
- *  for more details.
  */
 
 #ifndef _ASMPPC_HYDRA_H
diff --git a/arch/powerpc/include/asm/ibmebus.h b/arch/powerpc/include/asm/ibmebus.h
index 088f95b2e14f..8232260abc9a 100644
--- a/arch/powerpc/include/asm/ibmebus.h
+++ b/arch/powerpc/include/asm/ibmebus.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 OR OpenIB BSD */
 /*
  * IBM PowerPC eBus Infrastructure Support.
  *
@@ -6,34 +7,6 @@
  *  Heiko J Schick <schickhj@de.ibm.com>
  *
  * All rights reserved.
- *
- * This source code is distributed under a dual license of GPL v2.0 and OpenIB
- * BSD.
- *
- * OpenIB BSD License
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * Redistributions of source code must retain the above copyright notice, this
- * list of conditions and the following disclaimer.
- *
- * Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials
- * provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
- * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef _ASM_EBUS_H
diff --git a/arch/powerpc/include/asm/kgdb.h b/arch/powerpc/include/asm/kgdb.h
index a9e098a3b881..e5745e6ac2ee 100644
--- a/arch/powerpc/include/asm/kgdb.h
+++ b/arch/powerpc/include/asm/kgdb.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * The PowerPC (32/64) specific defines / externs for KGDB.  Based on
  * the previous 32bit and 64bit specific files, which had the following
@@ -12,10 +13,7 @@
  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
  * Author: Tom Rini <trini@kernel.crashing.org>
  *
- * 2006 (c) MontaVista Software, Inc. This file is licensed under
- * the terms of the GNU General Public License version 2. This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
+ * 2006 (c) MontaVista Software, Inc.
  */
 #ifdef __KERNEL__
 #ifndef __POWERPC_KGDB_H__
diff --git a/arch/powerpc/include/asm/membarrier.h b/arch/powerpc/include/asm/membarrier.h
index de7f79157918..012bba812c3a 100644
--- a/arch/powerpc/include/asm/membarrier.h
+++ b/arch/powerpc/include/asm/membarrier.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_POWERPC_MEMBARRIER_H
 #define _ASM_POWERPC_MEMBARRIER_H
 
diff --git a/arch/powerpc/include/asm/module.lds.h b/arch/powerpc/include/asm/module.lds.h
index cea5dc124be4..a4dd672e8c6a 100644
--- a/arch/powerpc/include/asm/module.lds.h
+++ b/arch/powerpc/include/asm/module.lds.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /* Force alignment of .toc section.  */
 SECTIONS
 {
diff --git a/arch/powerpc/include/asm/mpc52xx.h b/arch/powerpc/include/asm/mpc52xx.h
index ce1e0aabaa64..a7cf158168d8 100644
--- a/arch/powerpc/include/asm/mpc52xx.h
+++ b/arch/powerpc/include/asm/mpc52xx.h
@@ -1,13 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Prototypes, etc. for the Freescale MPC52xx embedded cpu chips
  * May need to be cleaned as the port goes on ...
  *
  * Copyright (C) 2004-2005 Sylvain Munaut <tnt@246tNt.com>
  * Copyright (C) 2003 MontaVista, Software, Inc.
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
  */
 
 #ifndef __ASM_POWERPC_MPC52xx_H__
diff --git a/arch/powerpc/include/asm/mpc52xx_psc.h b/arch/powerpc/include/asm/mpc52xx_psc.h
index ec995b289280..274bcfdc55de 100644
--- a/arch/powerpc/include/asm/mpc52xx_psc.h
+++ b/arch/powerpc/include/asm/mpc52xx_psc.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * include/asm-ppc/mpc52xx_psc.h
  *
@@ -13,10 +14,6 @@
  *
  * Copyright (C) 2004 Sylvain Munaut <tnt@246tNt.com>
  * Copyright (C) 2003 MontaVista, Software, Inc.
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
  */
 
 #ifndef __ASM_MPC52xx_PSC_H__
diff --git a/arch/powerpc/include/asm/pmac_feature.h b/arch/powerpc/include/asm/pmac_feature.h
index e08e829261b6..8f3aad3c1de9 100644
--- a/arch/powerpc/include/asm/pmac_feature.h
+++ b/arch/powerpc/include/asm/pmac_feature.h
@@ -1,10 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Definition of platform feature hooks for PowerMacs
  *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
  * Copyright (C) 1998 Paul Mackerras &
  *                    Ben. Herrenschmidt.
  *
diff --git a/arch/powerpc/include/asm/ppc_asm.h b/arch/powerpc/include/asm/ppc_asm.h
index 3c06a33b5da4..d9c6f12e6d3e 100644
--- a/arch/powerpc/include/asm/ppc_asm.h
+++ b/arch/powerpc/include/asm/ppc_asm.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Copyright (C) 1995-1999 Gary Thomas, Paul Mackerras, Cort Dougan.
  */
diff --git a/arch/powerpc/include/asm/pte-walk.h b/arch/powerpc/include/asm/pte-walk.h
index 714a35f0d425..dc8bd55e749f 100644
--- a/arch/powerpc/include/asm/pte-walk.h
+++ b/arch/powerpc/include/asm/pte-walk.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_POWERPC_PTE_WALK_H
 #define _ASM_POWERPC_PTE_WALK_H
 
diff --git a/arch/powerpc/include/asm/rheap.h b/arch/powerpc/include/asm/rheap.h
index 8e83703d6736..9dc2ca8ff16d 100644
--- a/arch/powerpc/include/asm/rheap.h
+++ b/arch/powerpc/include/asm/rheap.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * include/asm-ppc/rheap.h
  *
@@ -5,10 +6,7 @@
  *
  * Author: Pantelis Antoniou <panto@intracom.gr>
  *
- * 2004 (c) INTRACOM S.A. Greece. This file is licensed under
- * the terms of the GNU General Public License version 2. This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
+ * 2004 (c) INTRACOM S.A. Greece.
  */
 
 #ifndef __ASM_PPC_RHEAP_H__
diff --git a/arch/powerpc/include/asm/sfp-machine.h b/arch/powerpc/include/asm/sfp-machine.h
index 8b957aabb826..3bd0f284fda7 100644
--- a/arch/powerpc/include/asm/sfp-machine.h
+++ b/arch/powerpc/include/asm/sfp-machine.h
@@ -1,22 +1,8 @@
+/* SPDX-License-Identifier: LGPL-2.0+ */
 /* Machine-dependent software floating-point definitions.  PPC version.
    Copyright (C) 1997 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Library General Public License as
-   published by the Free Software Foundation; either version 2 of the
-   License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Library General Public License for more details.
-
-   You should have received a copy of the GNU Library General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If
-   not, write to the Free Software Foundation, Inc.,
-   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
    Actually, this is a PPC (32bit) version, written based on the
    i386, sparc, and sparc64 versions, by me,
    Peter Maydell (pmaydell@chiark.greenend.org.uk).
diff --git a/arch/powerpc/include/asm/vmalloc.h b/arch/powerpc/include/asm/vmalloc.h
index 4c69ece52a31..6f8df6b07c8a 100644
--- a/arch/powerpc/include/asm/vmalloc.h
+++ b/arch/powerpc/include/asm/vmalloc.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_POWERPC_VMALLOC_H
 #define _ASM_POWERPC_VMALLOC_H
 
diff --git a/arch/powerpc/include/asm/word-at-a-time.h b/arch/powerpc/include/asm/word-at-a-time.h
index f3f4710d4ff5..96245747720d 100644
--- a/arch/powerpc/include/asm/word-at-a-time.h
+++ b/arch/powerpc/include/asm/word-at-a-time.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_WORD_AT_A_TIME_H
 #define _ASM_WORD_AT_A_TIME_H
 
diff --git a/arch/powerpc/kernel/interrupt_64.S b/arch/powerpc/kernel/interrupt_64.S
index 7bab2d7de372..d58629fef038 100644
--- a/arch/powerpc/kernel/interrupt_64.S
+++ b/arch/powerpc/kernel/interrupt_64.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #include <asm/asm-offsets.h>
 #include <asm/bug.h>
 #ifdef CONFIG_PPC_BOOK3S
diff --git a/arch/powerpc/kernel/kgdb.c b/arch/powerpc/kernel/kgdb.c
index 9f8d0fa7b718..75b925e1f2b6 100644
--- a/arch/powerpc/kernel/kgdb.c
+++ b/arch/powerpc/kernel/kgdb.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * PowerPC backend to the KGDB stub.
  *
@@ -8,10 +9,6 @@
  * PPC32 support restored by Vitaly Wool <vwool@ru.mvista.com> and
  * Sergei Shtylyov <sshtylyov@ru.mvista.com>
  * Copyright (C) 2007-2008 Wind River Systems, Inc.
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program as licensed "as is" without any warranty of any
- * kind, whether express or implied.
  */
 
 #include <linux/kernel.h>
diff --git a/arch/powerpc/kernel/ptrace/ptrace.c b/arch/powerpc/kernel/ptrace/ptrace.c
index c43f77e2ac31..cb690dcb86dd 100644
--- a/arch/powerpc/kernel/ptrace/ptrace.c
+++ b/arch/powerpc/kernel/ptrace/ptrace.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  *  PowerPC version
  *    Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
@@ -9,10 +10,6 @@
  *
  * Modified by Cort Dougan (cort@hq.fsmlabs.com)
  * and Paul Mackerras (paulus@samba.org).
- *
- * This file is subject to the terms and conditions of the GNU General
- * Public License.  See the file README.legal in the main directory of
- * this archive for more details.
  */
 
 #include <linux/regset.h>
diff --git a/arch/powerpc/kernel/ptrace/ptrace32.c b/arch/powerpc/kernel/ptrace/ptrace32.c
index 19c224808982..ff1d780ed4fe 100644
--- a/arch/powerpc/kernel/ptrace/ptrace32.c
+++ b/arch/powerpc/kernel/ptrace/ptrace32.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * ptrace for 32-bit processes running on a 64-bit kernel.
  *
@@ -11,10 +12,6 @@
  *
  * Modified by Cort Dougan (cort@hq.fsmlabs.com)
  * and Paul Mackerras (paulus@samba.org).
- *
- * This file is subject to the terms and conditions of the GNU General
- * Public License.  See the file COPYING in the main directory of
- * this archive for more details.
  */
 
 #include <linux/ptrace.h>
diff --git a/arch/powerpc/kernel/signal.c b/arch/powerpc/kernel/signal.c
index b93b87df499d..2affb8940f6a 100644
--- a/arch/powerpc/kernel/signal.c
+++ b/arch/powerpc/kernel/signal.c
@@ -1,12 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Common signal handling code for both 32 and 64 bits
  *
  *    Copyright (c) 2007 Benjamin Herrenschmidt, IBM Corporation
  *    Extracted from signal_32.c and signal_64.c
- *
- * This file is subject to the terms and conditions of the GNU General
- * Public License.  See the file README.legal in the main directory of
- * this archive for more details.
  */
 
 #include <linux/tracehook.h>
diff --git a/arch/powerpc/kernel/signal.h b/arch/powerpc/kernel/signal.h
index 618aeccdf691..2006a07fe771 100644
--- a/arch/powerpc/kernel/signal.h
+++ b/arch/powerpc/kernel/signal.h
@@ -1,10 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  *    Copyright (c) 2007 Benjamin Herrenschmidt, IBM Corporation
  *    Extracted from signal_32.c and signal_64.c
- *
- * This file is subject to the terms and conditions of the GNU General
- * Public License.  See the file README.legal in the main directory of
- * this archive for more details.
  */
 
 #ifndef _POWERPC_ARCH_SIGNAL_H
diff --git a/arch/powerpc/kernel/vdso32/note.S b/arch/powerpc/kernel/vdso32/note.S
index 227a7327399e..1698e72d4cbf 100644
--- a/arch/powerpc/kernel/vdso32/note.S
+++ b/arch/powerpc/kernel/vdso32/note.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * This supplies .note.* sections to go into the PT_NOTE inside the vDSO text.
  * Here we can supply some information useful to userland.
diff --git a/arch/powerpc/kernel/vdso64/note.S b/arch/powerpc/kernel/vdso64/note.S
index dc2a509f7e8a..bd1fa23597d6 100644
--- a/arch/powerpc/kernel/vdso64/note.S
+++ b/arch/powerpc/kernel/vdso64/note.S
@@ -1 +1,2 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #include "../vdso32/note.S"
diff --git a/arch/powerpc/kvm/mpic.c b/arch/powerpc/kvm/mpic.c
index 23e9c2bd9f27..fe956ae6ed10 100644
--- a/arch/powerpc/kvm/mpic.c
+++ b/arch/powerpc/kvm/mpic.c
@@ -1,26 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * OpenPIC emulation
  *
  * Copyright (c) 2004 Jocelyn Mayer
  *               2011 Alexander Graf
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
  */
 
 #include <linux/slab.h>
diff --git a/arch/powerpc/lib/crtsavres.S b/arch/powerpc/lib/crtsavres.S
index 7e5e1c28e56a..075ce35226de 100644
--- a/arch/powerpc/lib/crtsavres.S
+++ b/arch/powerpc/lib/crtsavres.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Special support for eabi and SVR4
  *
@@ -8,11 +9,6 @@
  * Based on gcc/config/rs6000/crtsavres.asm from gcc
  * 64 bit additions from reading the PPC elf64abi document.
  *
- * This file is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2, or (at your option) any
- * later version.
- *
  * In addition to the permissions in the GNU General Public License, the
  * Free Software Foundation gives you unlimited permission to link the
  * compiled version of this file with other programs, and to distribute
@@ -21,16 +17,6 @@
  * respects; for example, they cover modification of the file, and
  * distribution when not linked into another program.)
  *
- * This file is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; see the file COPYING.  If not, write to
- * the Free Software Foundation, 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- *
  *    As a special exception, if you link this library with files
  *    compiled with GCC to produce an executable, this does not cause
  *    the resulting executable to be covered by the GNU General Public License.
diff --git a/arch/powerpc/lib/restart_table.c b/arch/powerpc/lib/restart_table.c
index bccb662c1b7b..aaf89522d23e 100644
--- a/arch/powerpc/lib/restart_table.c
+++ b/arch/powerpc/lib/restart_table.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <asm/interrupt.h>
 #include <asm/kprobes.h>
 
diff --git a/arch/powerpc/lib/rheap.c b/arch/powerpc/lib/rheap.c
index 6aa774aa5b16..5c1ae0a89284 100644
--- a/arch/powerpc/lib/rheap.c
+++ b/arch/powerpc/lib/rheap.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * A Remote Heap.  Remote means that we don't touch the memory that the
  * heap points to. Normal heap implementations use the memory they manage
@@ -7,10 +8,7 @@
  *
  * Author: Pantelis Antoniou <panto@intracom.gr>
  *
- * 2004 (c) INTRACOM S.A. Greece. This file is licensed under
- * the terms of the GNU General Public License version 2. This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
+ * 2004 (c) INTRACOM S.A. Greece.
  */
 #include <linux/types.h>
 #include <linux/errno.h>
diff --git a/arch/powerpc/mm/book3s64/hash_4k.c b/arch/powerpc/mm/book3s64/hash_4k.c
index 7de1a8a0c62a..4e18a09977dd 100644
--- a/arch/powerpc/mm/book3s64/hash_4k.c
+++ b/arch/powerpc/mm/book3s64/hash_4k.c
@@ -1,15 +1,7 @@
+// SPDX-License-Identifier: LGPL-2.0
 /*
  * Copyright IBM Corporation, 2015
  * Author Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU Lesser General Public License
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
  */
 
 #include <linux/mm.h>
diff --git a/arch/powerpc/mm/book3s64/hash_64k.c b/arch/powerpc/mm/book3s64/hash_64k.c
index 998c6817ed47..90d1a3eff32c 100644
--- a/arch/powerpc/mm/book3s64/hash_64k.c
+++ b/arch/powerpc/mm/book3s64/hash_64k.c
@@ -1,15 +1,7 @@
+// SPDX-License-Identifier: LGPL-2.0
 /*
  * Copyright IBM Corporation, 2015
  * Author Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU Lesser General Public License
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
  */
 
 #include <linux/mm.h>
diff --git a/arch/powerpc/mm/book3s64/hash_hugepage.c b/arch/powerpc/mm/book3s64/hash_hugepage.c
index c0fabe6c5a12..158c51f520fc 100644
--- a/arch/powerpc/mm/book3s64/hash_hugepage.c
+++ b/arch/powerpc/mm/book3s64/hash_hugepage.c
@@ -1,15 +1,7 @@
+// SPDX-License-Identifier: LGPL-2.1
 /*
  * Copyright IBM Corporation, 2013
  * Author Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2.1 of the GNU Lesser General Public License
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
  */
 
 /*
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index ddead41e2194..5cdd7a587e09 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * PPC Huge TLB Page Support for Kernel.
  *
diff --git a/arch/powerpc/perf/req-gen/_end.h b/arch/powerpc/perf/req-gen/_end.h
index 8a406980b6bf..6687fccd3752 100644
--- a/arch/powerpc/perf/req-gen/_end.h
+++ b/arch/powerpc/perf/req-gen/_end.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 
 #undef REQ_GEN_PREFIX
 #undef REQUEST_BEGIN
diff --git a/arch/powerpc/platforms/44x/fsp2.h b/arch/powerpc/platforms/44x/fsp2.h
index 9e1d52754c8b..ae637bf2b58b 100644
--- a/arch/powerpc/platforms/44x/fsp2.h
+++ b/arch/powerpc/platforms/44x/fsp2.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_POWERPC_FSP_DCR_H_
 #define _ASM_POWERPC_FSP_DCR_H_
 #ifdef __KERNEL__
diff --git a/arch/powerpc/platforms/4xx/pci.c b/arch/powerpc/platforms/4xx/pci.c
index 24f41e178cbc..1dabc65d5b3e 100644
--- a/arch/powerpc/platforms/4xx/pci.c
+++ b/arch/powerpc/platforms/4xx/pci.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * PCI / PCI-X / PCI-Express support for 4xx parts
  *
diff --git a/arch/powerpc/platforms/4xx/pci.h b/arch/powerpc/platforms/4xx/pci.h
index bb4821938ab1..364838cc90ff 100644
--- a/arch/powerpc/platforms/4xx/pci.h
+++ b/arch/powerpc/platforms/4xx/pci.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * PCI / PCI-X / PCI-Express support for 4xx parts
  *
diff --git a/arch/powerpc/platforms/52xx/efika.c b/arch/powerpc/platforms/52xx/efika.c
index 3b7d70d71692..34aea2bbc5ec 100644
--- a/arch/powerpc/platforms/52xx/efika.c
+++ b/arch/powerpc/platforms/52xx/efika.c
@@ -1,12 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Efika 5K2 platform code
  * Some code really inspired from the lite5200b platform.
  *
  * Copyright (C) 2006 bplan GmbH
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
  */
 
 #include <linux/init.h>
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_common.c b/arch/powerpc/platforms/52xx/mpc52xx_common.c
index 565e3a83dc9e..bd6831fc2199 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_common.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_common.c
@@ -1,13 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  *
  * Utility functions for the Freescale MPC52xx.
  *
  * Copyright (C) 2006 Sylvain Munaut <tnt@246tNt.com>
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
- *
  */
 
 #undef DEBUG
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_pci.c b/arch/powerpc/platforms/52xx/mpc52xx_pci.c
index af0f79995214..750167a984ec 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_pci.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_pci.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * PCI code for the Freescale MPC52xx embedded CPU.
  *
  * Copyright (C) 2006 Secret Lab Technologies Ltd.
  *                        Grant Likely <grant.likely@secretlab.ca>
  * Copyright (C) 2004 Sylvain Munaut <tnt@246tNt.com>
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
  */
 
 #undef DEBUG
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_pic.c b/arch/powerpc/platforms/52xx/mpc52xx_pic.c
index 76a8102bdb98..bd8add92c4ae 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_pic.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_pic.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  *
  * Programmable Interrupt Controller functions for the Freescale MPC52xx.
@@ -9,11 +10,6 @@
  *
  * Based on the code from the 2.4 kernel by
  * Dale Farnsworth <dfarnsworth@mvista.com> and Kent Borg.
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
- *
  */
 
 /*
diff --git a/arch/powerpc/platforms/85xx/ksi8560.c b/arch/powerpc/platforms/85xx/ksi8560.c
index 6ef8580fdc0e..638ae5e9a1eb 100644
--- a/arch/powerpc/platforms/85xx/ksi8560.c
+++ b/arch/powerpc/platforms/85xx/ksi8560.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Board setup routines for the Emerson KSI8560
  *
@@ -5,10 +6,7 @@
  *
  * Based on mpc85xx_ads.c maintained by Kumar Gala
  *
- * 2008 (c) MontaVista, Software, Inc.  This file is licensed under
- * the terms of the GNU General Public License version 2.  This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
+ * 2008 (c) MontaVista, Software, Inc.
  *
  */
 
diff --git a/arch/powerpc/platforms/85xx/p1022_ds.c b/arch/powerpc/platforms/85xx/p1022_ds.c
index 1f1af0557470..24d9518668cd 100644
--- a/arch/powerpc/platforms/85xx/p1022_ds.c
+++ b/arch/powerpc/platforms/85xx/p1022_ds.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * P1022DS board specific routines
  *
@@ -10,10 +11,6 @@
  * This file is taken from the Freescale P1022DS BSP, with modifications:
  * 2) No AMP support
  * 3) No PCI endpoint support
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2.  This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
  */
 
 #include <linux/fsl/guts.h>
diff --git a/arch/powerpc/platforms/85xx/p1022_rdk.c b/arch/powerpc/platforms/85xx/p1022_rdk.c
index fd9e3e7ef234..69a4384d8fd3 100644
--- a/arch/powerpc/platforms/85xx/p1022_rdk.c
+++ b/arch/powerpc/platforms/85xx/p1022_rdk.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * P1022 RDK board specific routines
  *
@@ -6,10 +7,6 @@
  * Author: Timur Tabi <timur@freescale.com>
  *
  * Based on p1022_ds.c
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2.  This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
  */
 
 #include <linux/fsl/guts.h>
diff --git a/arch/powerpc/platforms/8xx/ep88xc.c b/arch/powerpc/platforms/8xx/ep88xc.c
index ebcf34a14789..f08b76c7cd17 100644
--- a/arch/powerpc/platforms/8xx/ep88xc.c
+++ b/arch/powerpc/platforms/8xx/ep88xc.c
@@ -1,12 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Platform setup for the Embedded Planet EP88xC board
  *
  * Author: Scott Wood <scottwood@freescale.com>
  * Copyright 2007 Freescale Semiconductor, Inc.
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
  */
 
 #include <linux/init.h>
diff --git a/arch/powerpc/platforms/8xx/mpc86xads.h b/arch/powerpc/platforms/8xx/mpc86xads.h
index 17b1fe75e0b2..ebfe27d62486 100644
--- a/arch/powerpc/platforms/8xx/mpc86xads.h
+++ b/arch/powerpc/platforms/8xx/mpc86xads.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * A collection of structures, addresses, and values associated with
  * the Freescale MPC86xADS board.
@@ -6,9 +7,7 @@
  * Author: MontaVista Software, Inc.
  *         source@mvista.com
  *
- * 2005 (c) MontaVista Software, Inc.  This file is licensed under the
- * terms of the GNU General Public License version 2.  This program is licensed
- * "as is" without any warranty of any kind, whether express or implied.
+ * 2005 (c) MontaVista Software, Inc.
  */
 
 #ifdef __KERNEL__
diff --git a/arch/powerpc/platforms/8xx/mpc86xads_setup.c b/arch/powerpc/platforms/8xx/mpc86xads_setup.c
index 8d02f5ff4481..73ac5e9b52a1 100644
--- a/arch/powerpc/platforms/8xx/mpc86xads_setup.c
+++ b/arch/powerpc/platforms/8xx/mpc86xads_setup.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*arch/powerpc/platforms/8xx/mpc86xads_setup.c
  *
  * Platform setup for the Freescale mpc86xads board
@@ -8,10 +9,6 @@
  *
  * Heavily modified by Scott Wood <scottwood@freescale.com>
  * Copyright 2007 Freescale Semiconductor, Inc.
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
  */
 
 #include <linux/init.h>
diff --git a/arch/powerpc/platforms/8xx/mpc885ads.h b/arch/powerpc/platforms/8xx/mpc885ads.h
index 19412f76fa3b..d9f038015b97 100644
--- a/arch/powerpc/platforms/8xx/mpc885ads.h
+++ b/arch/powerpc/platforms/8xx/mpc885ads.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * A collection of structures, addresses, and values associated with
  * the Freescale MPC885ADS board.
@@ -6,9 +7,7 @@
  * Author: MontaVista Software, Inc.
  *         source@mvista.com
  *
- * 2005 (c) MontaVista Software, Inc.  This file is licensed under the
- * terms of the GNU General Public License version 2.  This program is licensed
- * "as is" without any warranty of any kind, whether express or implied.
+ * 2005 (c) MontaVista Software, Inc.
  */
 
 #ifdef __KERNEL__
diff --git a/arch/powerpc/platforms/8xx/mpc885ads_setup.c b/arch/powerpc/platforms/8xx/mpc885ads_setup.c
index a0c83c1905c6..74919d491f36 100644
--- a/arch/powerpc/platforms/8xx/mpc885ads_setup.c
+++ b/arch/powerpc/platforms/8xx/mpc885ads_setup.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Platform setup for the Freescale mpc885ads board
  *
@@ -7,10 +8,6 @@
  *
  * Heavily modified by Scott Wood <scottwood@freescale.com>
  * Copyright 2007 Freescale Semiconductor, Inc.
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
  */
 
 #include <linux/init.h>
diff --git a/arch/powerpc/platforms/8xx/mpc8xx.h b/arch/powerpc/platforms/8xx/mpc8xx.h
index 31cc2ecace42..3a39e1ad73da 100644
--- a/arch/powerpc/platforms/8xx/mpc8xx.h
+++ b/arch/powerpc/platforms/8xx/mpc8xx.h
@@ -1,12 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Prototypes, etc. for the Freescale MPC8xx embedded cpu chips
  * May need to be cleaned as the port goes on ...
  *
  * Copyright (C) 2008 Jochen Friedrich <jochen@scram.de>
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
  */
 #ifndef __MPC8xx_H
 #define __MPC8xx_H
diff --git a/arch/powerpc/platforms/8xx/pic.c b/arch/powerpc/platforms/8xx/pic.c
index f2ba837249d6..4130cea17239 100644
--- a/arch/powerpc/platforms/8xx/pic.c
+++ b/arch/powerpc/platforms/8xx/pic.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/kernel.h>
 #include <linux/stddef.h>
 #include <linux/sched.h>
diff --git a/arch/powerpc/platforms/8xx/pic.h b/arch/powerpc/platforms/8xx/pic.h
index 9fe00eebdc8b..45ec3966a2ce 100644
--- a/arch/powerpc/platforms/8xx/pic.h
+++ b/arch/powerpc/platforms/8xx/pic.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _PPC_KERNEL_MPC8xx_H
 #define _PPC_KERNEL_MPC8xx_H
 
diff --git a/arch/powerpc/platforms/8xx/tqm8xx_setup.c b/arch/powerpc/platforms/8xx/tqm8xx_setup.c
index 4cea8b1afa44..a7839f5be195 100644
--- a/arch/powerpc/platforms/8xx/tqm8xx_setup.c
+++ b/arch/powerpc/platforms/8xx/tqm8xx_setup.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Platform setup for the MPC8xx based boards from TQM.
  *
@@ -11,10 +12,6 @@
  *
  * Heavily modified by Scott Wood <scottwood@freescale.com>
  * Copyright 2007 Freescale Semiconductor, Inc.
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
  */
 
 #include <linux/init.h>
diff --git a/arch/powerpc/platforms/cell/spufs/spu_restore_dump.h_shipped b/arch/powerpc/platforms/cell/spufs/spu_restore_dump.h_shipped
index f383b027e8bf..f997a8c9edd2 100644
--- a/arch/powerpc/platforms/cell/spufs/spu_restore_dump.h_shipped
+++ b/arch/powerpc/platforms/cell/spufs/spu_restore_dump.h_shipped
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * spu_restore_dump.h: Copyright (C) 2005 IBM.
  * Hex-dump auto generated from spu_restore.c.
diff --git a/arch/powerpc/platforms/cell/spufs/spu_save_dump.h_shipped b/arch/powerpc/platforms/cell/spufs/spu_save_dump.h_shipped
index b9f81ac8a632..f85f798e270e 100644
--- a/arch/powerpc/platforms/cell/spufs/spu_save_dump.h_shipped
+++ b/arch/powerpc/platforms/cell/spufs/spu_save_dump.h_shipped
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * spu_save_dump.h: Copyright (C) 2005 IBM.
  * Hex-dump auto generated from spu_save.c.
diff --git a/arch/powerpc/platforms/chrp/gg2.h b/arch/powerpc/platforms/chrp/gg2.h
index 341ae55b99fb..0af19e866bc3 100644
--- a/arch/powerpc/platforms/chrp/gg2.h
+++ b/arch/powerpc/platforms/chrp/gg2.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  *  include/asm-ppc/gg2.h -- VLSI VAS96011/12 `Golden Gate 2' register definitions
  *
@@ -7,10 +8,6 @@
  *
  *	The VAS96011/12 Chipset, Data Book, Edition 1.0
  *	VLSI Technology, Inc.
- *
- *  This file is subject to the terms and conditions of the GNU General Public
- *  License.  See the file COPYING in the main directory of this archive
- *  for more details.
  */
 
 #ifndef _ASMPPC_GG2_H
diff --git a/arch/powerpc/platforms/embedded6xx/linkstation.c b/arch/powerpc/platforms/embedded6xx/linkstation.c
index eb8342e7f84e..f8470d301f0b 100644
--- a/arch/powerpc/platforms/embedded6xx/linkstation.c
+++ b/arch/powerpc/platforms/embedded6xx/linkstation.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Board setup routines for the Buffalo Linkstation / Kurobox Platform.
  *
  * Copyright (C) 2006 G. Liakhovetski (g.liakhovetski@gmx.de)
  *
  * Based on sandpoint.c by Mark A. Greer
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2.  This program is licensed "as is" without any warranty of
- * any kind, whether express or implied.
  */
 
 #include <linux/kernel.h>
diff --git a/arch/powerpc/platforms/embedded6xx/ls_uart.c b/arch/powerpc/platforms/embedded6xx/ls_uart.c
index 9d891bd5df5a..7ce62fe5847f 100644
--- a/arch/powerpc/platforms/embedded6xx/ls_uart.c
+++ b/arch/powerpc/platforms/embedded6xx/ls_uart.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * AVR power-management chip interface for the Buffalo Linkstation /
  * Kurobox Platform.
  *
  * Author: 2006 (c) G. Liakhovetski
  *	 g.liakhovetski@gmx.de
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2.  This program is licensed "as is" without any warranty of
- * any kind, whether express or implied.
  */
 #include <linux/workqueue.h>
 #include <linux/string.h>
diff --git a/arch/powerpc/platforms/embedded6xx/mpc10x.h b/arch/powerpc/platforms/embedded6xx/mpc10x.h
index 5ad12023e562..0f36f5252a5c 100644
--- a/arch/powerpc/platforms/embedded6xx/mpc10x.h
+++ b/arch/powerpc/platforms/embedded6xx/mpc10x.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Common routines for the Motorola SPS MPC106/8240/107 Host bridge/Mem
  * ctlr/EPIC/etc.
@@ -5,10 +6,7 @@
  * Author: Mark A. Greer
  *         mgreer@mvista.com
  *
- * 2001 (c) MontaVista, Software, Inc.  This file is licensed under
- * the terms of the GNU General Public License version 2.  This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
+ * 2001 (c) MontaVista, Software, Inc.
  */
 #ifndef __PPC_KERNEL_MPC10X_H
 #define __PPC_KERNEL_MPC10X_H
diff --git a/arch/powerpc/platforms/embedded6xx/storcenter.c b/arch/powerpc/platforms/embedded6xx/storcenter.c
index e188b90f7016..aa19ad11d52c 100644
--- a/arch/powerpc/platforms/embedded6xx/storcenter.c
+++ b/arch/powerpc/platforms/embedded6xx/storcenter.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Board setup routines for the storcenter
  *
@@ -5,10 +6,6 @@
  * Copyright 2007 Andy Wilcox, Jon Loeliger
  *
  * Based on linkstation.c by G. Liakhovetski
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2.  This program is licensed "as is" without any warranty of
- * any kind, whether express or implied.
  */
 
 #include <linux/kernel.h>
diff --git a/arch/powerpc/platforms/microwatt/Makefile b/arch/powerpc/platforms/microwatt/Makefile
index 116d6d3ad3f0..7defeadac694 100644
--- a/arch/powerpc/platforms/microwatt/Makefile
+++ b/arch/powerpc/platforms/microwatt/Makefile
@@ -1 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0
 obj-y	+= setup.o rng.o
diff --git a/arch/powerpc/platforms/microwatt/setup.c b/arch/powerpc/platforms/microwatt/setup.c
index 0b02603bdb74..fe6c242f788f 100644
--- a/arch/powerpc/platforms/microwatt/setup.c
+++ b/arch/powerpc/platforms/microwatt/setup.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Microwatt FPGA-based SoC platform setup code.
  *
diff --git a/arch/powerpc/platforms/pseries/ibmebus.c b/arch/powerpc/platforms/pseries/ibmebus.c
index 7ee3ed7d6cc2..8d0521a13892 100644
--- a/arch/powerpc/platforms/pseries/ibmebus.c
+++ b/arch/powerpc/platforms/pseries/ibmebus.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0 OR OpenIB BSD
 /*
  * IBM PowerPC IBM eBus Infrastructure Support.
  *
@@ -6,34 +7,6 @@
  *  Heiko J Schick <schickhj@de.ibm.com>
  *
  * All rights reserved.
- *
- * This source code is distributed under a dual license of GPL v2.0 and OpenIB
- * BSD.
- *
- * OpenIB BSD License
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * Redistributions of source code must retain the above copyright notice, this
- * list of conditions and the following disclaimer.
- *
- * Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials
- * provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
- * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include <linux/init.h>
diff --git a/arch/powerpc/sysdev/cpm2.c b/arch/powerpc/sysdev/cpm2.c
index 3f130312b6e9..f3083b231976 100644
--- a/arch/powerpc/sysdev/cpm2.c
+++ b/arch/powerpc/sysdev/cpm2.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * General Purpose functions for the global management of the
  * 8260 Communication Processor Module.
@@ -8,10 +9,6 @@
  * 2006 (c) MontaVista Software, Inc.
  * Vitaly Bordug <vbordug@ru.mvista.com>
  * 	Merged to arch/powerpc from arch/ppc/syslib/cpm2_common.c
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
  */
 
 /*
diff --git a/arch/powerpc/sysdev/cpm2_pic.c b/arch/powerpc/sysdev/cpm2_pic.c
index 9e86074719a9..4a07b266ed4f 100644
--- a/arch/powerpc/sysdev/cpm2_pic.c
+++ b/arch/powerpc/sysdev/cpm2_pic.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Platform information definitions.
  *
@@ -8,10 +9,6 @@
  *
  * 1999-2001 (c) Dan Malek <dan@embeddedalley.com>
  * 2006 (c) MontaVista Software, Inc.
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
  */
 
 /* The CPM2 internal interrupt controller.  It is usually
diff --git a/arch/powerpc/sysdev/ehv_pic.c b/arch/powerpc/sysdev/ehv_pic.c
index 00705258ecf9..7cd2bca189bf 100644
--- a/arch/powerpc/sysdev/ehv_pic.c
+++ b/arch/powerpc/sysdev/ehv_pic.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  *  Driver for ePAPR Embedded Hypervisor PIC
  *
  *  Copyright 2008-2011 Freescale Semiconductor, Inc.
  *
  *  Author: Ashish Kalra <ashish.kalra@freescale.com>
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2.  This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
  */
 
 #include <linux/types.h>
diff --git a/arch/powerpc/sysdev/ge/ge_pic.c b/arch/powerpc/sysdev/ge/ge_pic.c
index 02553a8ce191..3ecaa319c53f 100644
--- a/arch/powerpc/sysdev/ge/ge_pic.c
+++ b/arch/powerpc/sysdev/ge/ge_pic.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Interrupt handling for GE FPGA based PIC
  *
  * Author: Martyn Welch <martyn.welch@ge.com>
  *
  * 2008 (c) GE Intelligent Platforms Embedded Systems, Inc.
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2.  This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
  */
 
 #include <linux/stddef.h>
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index d5cb48b61bbd..23514f449381 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  *  arch/powerpc/kernel/mpic.c
  *
@@ -7,10 +8,6 @@
  *
  *  Copyright (C) 2004 Benjamin Herrenschmidt, IBM Corp.
  *  Copyright 2010-2012 Freescale Semiconductor, Inc.
- *
- *  This file is subject to the terms and conditions of the GNU General Public
- *  License.  See the file COPYING in the main directory of this archive
- *  for more details.
  */
 
 #undef DEBUG
diff --git a/arch/powerpc/sysdev/rtc_cmos_setup.c b/arch/powerpc/sysdev/rtc_cmos_setup.c
index af0f9beddca9..1d9d072d1038 100644
--- a/arch/powerpc/sysdev/rtc_cmos_setup.c
+++ b/arch/powerpc/sysdev/rtc_cmos_setup.c
@@ -1,12 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Setup code for PC-style Real-Time Clock.
  *
  * Author: Wade Farnsworth <wfarnsworth@mvista.com>
  *
- * 2007 (c) MontaVista Software, Inc. This file is licensed under
- * the terms of the GNU General Public License version 2. This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
+ * 2007 (c) MontaVista Software, Inc.
  */
 
 #include <linux/platform_device.h>
diff --git a/arch/powerpc/tools/ci-build.sh b/arch/powerpc/tools/ci-build.sh
index 420df6ec5a2f..a861fd722495 100755
--- a/arch/powerpc/tools/ci-build.sh
+++ b/arch/powerpc/tools/ci-build.sh
@@ -1,4 +1,5 @@
 #!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
 
 if [[ -z "$TARGET" || -z "$IMAGE" ]]; then
     echo "Error: required environment variables not set!"
diff --git a/arch/powerpc/tools/head_check.sh b/arch/powerpc/tools/head_check.sh
index 689907cda996..ee4e8cbb3747 100644
--- a/arch/powerpc/tools/head_check.sh
+++ b/arch/powerpc/tools/head_check.sh
@@ -1,10 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0+
 # Copyright © 2016 IBM Corporation
 
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version
-# 2 of the License, or (at your option) any later version.
-
 # This script checks the head of a vmlinux for linker stubs that
 # break our placement of fixed-location code for 64-bit.
 
diff --git a/arch/powerpc/xmon/ppc.h b/arch/powerpc/xmon/ppc.h
index d00f33dcf192..b464578397a0 100644
--- a/arch/powerpc/xmon/ppc.h
+++ b/arch/powerpc/xmon/ppc.h
@@ -1,22 +1,11 @@
+/* SPDX-License-Identifier: GPL-1.0+ */
 /* ppc.h -- Header file for PowerPC opcode table
    Copyright (C) 1994-2016 Free Software Foundation, Inc.
    Written by Ian Lance Taylor, Cygnus Support
 
 This file is part of GDB, GAS, and the GNU binutils.
 
-GDB, GAS, and the GNU binutils are free software; you can redistribute
-them and/or modify them under the terms of the GNU General Public
-License as published by the Free Software Foundation; either version
-1, or (at your option) any later version.
-
-GDB, GAS, and the GNU binutils are distributed in the hope that they
-will be useful, but WITHOUT ANY WARRANTY; without even the implied
-warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
-the GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this file; see the file COPYING.  If not, write to the Free
-Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
+ */
 
 #ifndef PPC_H
 #define PPC_H
