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 9a3043a..c3acefa 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 b023b16..0a635a8 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 6209166..7280016 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 7dbc5de..55ebc7e 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 a96d6d5..ac56e3a 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 5f14bcd..15e9c2a 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 8fc87d3..2d36c3a 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 2f8b932..683fd53 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 e8784aa..f63e5cf 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 e52b369..dcef1ff 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 4f60108..f88d79f 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 513141f..eb51fe8 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 bc47717..d90a6e2 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 7eccfe0..9a956c2 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 0473a63..c487f93 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 c43f254..a22a73a 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>