SPDX: Convert all of our single license tags to Linux Kernel style

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>

16 files changed, 16 insertions, 33 deletions

diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile
index 9a3043abf8c..c3acefaea7e 100644
--- a/arch/powerpc/lib/Makefile
+++ b/arch/powerpc/lib/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0+
 #
 # (C) Copyright 2000-2006
 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
-#
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 ## Build a couple of necessary functions into a private libgcc
 ## if the user asked for it
diff --git a/arch/powerpc/lib/_ashldi3.S b/arch/powerpc/lib/_ashldi3.S
index b023b163ac3..0a635a80cf2 100644
--- a/arch/powerpc/lib/_ashldi3.S
+++ b/arch/powerpc/lib/_ashldi3.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * This code was copied from arch/powerpc/kernel/misc_32.S in the Linux
  * kernel sources (commit 85e2efbb1db9a18d218006706d6e4fbeb0216213, also
@@ -7,8 +8,6 @@
  *
  * Largely rewritten by Cort Dougan (cort@cs.nmt.edu)
  * and Paul Mackerras.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <ppc_asm.tmpl>
diff --git a/arch/powerpc/lib/_ashrdi3.S b/arch/powerpc/lib/_ashrdi3.S
index 620916676b4..728001696d3 100644
--- a/arch/powerpc/lib/_ashrdi3.S
+++ b/arch/powerpc/lib/_ashrdi3.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * This code was copied from arch/powerpc/kernel/misc_32.S in the Linux
  * kernel sources (commit 85e2efbb1db9a18d218006706d6e4fbeb0216213, also
@@ -7,8 +8,6 @@
  *
  * Largely rewritten by Cort Dougan (cort@cs.nmt.edu)
  * and Paul Mackerras.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <ppc_asm.tmpl>
diff --git a/arch/powerpc/lib/_lshrdi3.S b/arch/powerpc/lib/_lshrdi3.S
index 7dbc5de13fb..55ebc7e2350 100644
--- a/arch/powerpc/lib/_lshrdi3.S
+++ b/arch/powerpc/lib/_lshrdi3.S
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * This code was copied from arch/powerpc/kernel/misc_32.S in the Linux
  * kernel sources (commit 85e2efbb1db9a18d218006706d6e4fbeb0216213, also
@@ -7,8 +8,6 @@
  *
  * Largely rewritten by Cort Dougan (cort@cs.nmt.edu)
  * and Paul Mackerras.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <ppc_asm.tmpl>
diff --git a/arch/powerpc/lib/bat_rw.c b/arch/powerpc/lib/bat_rw.c
index a96d6d5d2bc..ac56e3aeddb 100644
--- a/arch/powerpc/lib/bat_rw.c
+++ b/arch/powerpc/lib/bat_rw.c
@@ -1,8 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2002
  * Rich Ireland, Enterasys Networks, rireland@enterasys.com.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/arch/powerpc/lib/bootm.c b/arch/powerpc/lib/bootm.c
index 5f14bcd28e1..15e9c2a83e5 100644
--- a/arch/powerpc/lib/bootm.c
+++ b/arch/powerpc/lib/bootm.c
@@ -1,10 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2008 Semihalf
  *
  * (C) Copyright 2000-2006
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 
diff --git a/arch/powerpc/lib/cache.c b/arch/powerpc/lib/cache.c
index 8fc87d3aac4..2d36c3aa082 100644
--- a/arch/powerpc/lib/cache.c
+++ b/arch/powerpc/lib/cache.c
@@ -1,8 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2002
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/arch/powerpc/lib/extable.c b/arch/powerpc/lib/extable.c
index 2f8b9326f92..683fd53b6af 100644
--- a/arch/powerpc/lib/extable.c
+++ b/arch/powerpc/lib/extable.c
@@ -1,10 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (C) 1999  Magnus Damm <kieraypc01.p.y.kie.era.ericsson.se>
  *
  * (C) Copyright 2000
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 #include <common.h>
 
diff --git a/arch/powerpc/lib/interrupts.c b/arch/powerpc/lib/interrupts.c
index e8784aa16e9..f63e5cf799b 100644
--- a/arch/powerpc/lib/interrupts.c
+++ b/arch/powerpc/lib/interrupts.c
@@ -1,11 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2000-2002
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  *
  * (C) Copyright 2003
  * Gleb Natapov <gnatapov@mrv.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/arch/powerpc/lib/ppccache.S b/arch/powerpc/lib/ppccache.S
index e52b369d79e..dcef1ffcaf5 100644
--- a/arch/powerpc/lib/ppccache.S
+++ b/arch/powerpc/lib/ppccache.S
@@ -1,10 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 1998  Dan Malek <dmalek@jlc.net>
  * Copyright (C) 1999  Magnus Damm <kieraypc01.p.y.kie.era.ericsson.se>
  * Copyright (C) 2000, 2001,2002 Wolfgang Denk <wd@denx.de>
  * Copyright Freescale Semiconductor, Inc. 2004, 2006.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <config.h>
diff --git a/arch/powerpc/lib/ppcstring.S b/arch/powerpc/lib/ppcstring.S
index 4f601087ed9..f88d79fa42a 100644
--- a/arch/powerpc/lib/ppcstring.S
+++ b/arch/powerpc/lib/ppcstring.S
@@ -1,9 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * String handling functions for PowerPC.
  *
  * Copyright (C) 1996 Paul Mackerras.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 #include <ppc_asm.tmpl>
 #include <linux/errno.h>
diff --git a/arch/powerpc/lib/reloc.S b/arch/powerpc/lib/reloc.S
index 513141f228e..eb51fe88818 100644
--- a/arch/powerpc/lib/reloc.S
+++ b/arch/powerpc/lib/reloc.S
@@ -1,7 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2009 Wolfgang Denk <wd@denx.de>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <ppc_asm.tmpl>
diff --git a/arch/powerpc/lib/spl.c b/arch/powerpc/lib/spl.c
index bc477175afb..d90a6e27b90 100644
--- a/arch/powerpc/lib/spl.c
+++ b/arch/powerpc/lib/spl.c
@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2012 Stefan Roese <sr@denx.de>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 #include <common.h>
 #include <config.h>
diff --git a/arch/powerpc/lib/stack.c b/arch/powerpc/lib/stack.c
index 7eccfe0e30c..9a956c221dd 100644
--- a/arch/powerpc/lib/stack.c
+++ b/arch/powerpc/lib/stack.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (c) 2015 Andreas Bießmann <andreas@biessmann.org>
  *
@@ -8,8 +9,6 @@
  * (C) Copyright 2002
  * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
  * Marius Groeger <mgroeger@sysgo.de>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 #include <common.h>
 
diff --git a/arch/powerpc/lib/ticks.S b/arch/powerpc/lib/ticks.S
index 0473a639eb9..c487f938fa8 100644
--- a/arch/powerpc/lib/ticks.S
+++ b/arch/powerpc/lib/ticks.S
@@ -1,10 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * (C) Copyright 2000, 2001
  * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com.
  *  base on code by
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <ppc_asm.tmpl>
diff --git a/arch/powerpc/lib/time.c b/arch/powerpc/lib/time.c
index c43f254481a..a22a73abfa5 100644
--- a/arch/powerpc/lib/time.c
+++ b/arch/powerpc/lib/time.c
@@ -1,8 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2000, 2001
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>