of: add common header for flattened device tree representation

Add a common header file for working with the flattened device tree
data structure and merge the shared data tags used by Microblaze and
PowerPC

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Michal Simek <monstr@monstr.eu>
Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>

arch/microblaze/include/asm/prom.h

@@ -17,20 +17,10 @@
 #ifndef _ASM_MICROBLAZE_PROM_H
 #define _ASM_MICROBLAZE_PROM_H
 #ifdef __KERNEL__
-
-/* Definitions used by the flattened device tree */
-#define OF_DT_HEADER		0xd00dfeed /* marker */
-#define OF_DT_BEGIN_NODE	0x1 /* Start of node, full name */
-#define OF_DT_END_NODE		0x2 /* End node */
-#define OF_DT_PROP		0x3 /* Property: name off, size, content */
-#define OF_DT_NOP		0x4 /* nop */
-#define OF_DT_END		0x9
-
-#define OF_DT_VERSION		0x10
-
 #ifndef __ASSEMBLY__
 
 #include <linux/types.h>
+#include <linux/of_fdt.h>
 #include <linux/proc_fs.h>
 #include <linux/platform_device.h>
 #include <asm/irq.h>

arch/microblaze/kernel/head.S

@@ -31,7 +31,7 @@
 #include <linux/linkage.h>
 #include <asm/thread_info.h>
 #include <asm/page.h>
-#include <asm/prom.h>		/* for OF_DT_HEADER */
+#include <linux/of_fdt.h>		/* for OF_DT_HEADER */
 
 #ifdef CONFIG_MMU
 #include <asm/setup.h> /* COMMAND_LINE_SIZE */

arch/powerpc/include/asm/prom.h

@@ -17,6 +17,7 @@
  * 2 of the License, or (at your option) any later version.
  */
 #include <linux/types.h>
+#include <linux/of_fdt.h>
 #include <linux/proc_fs.h>
 #include <linux/platform_device.h>
 #include <asm/irq.h>
@@ -29,17 +30,6 @@
 #define of_prop_cmp(s1, s2)		strcmp((s1), (s2))
 #define of_node_cmp(s1, s2)		strcasecmp((s1), (s2))
 
-/* Definitions used by the flattened device tree */
-#define OF_DT_HEADER		0xd00dfeed	/* marker */
-#define OF_DT_BEGIN_NODE	0x1		/* Start of node, full name */
-#define OF_DT_END_NODE		0x2		/* End node */
-#define OF_DT_PROP		0x3		/* Property: name off, size,
-						 * content */
-#define OF_DT_NOP		0x4		/* nop */
-#define OF_DT_END		0x9
-
-#define OF_DT_VERSION		0x10
-
 /*
  * This is what gets passed to the kernel by prom_init or kexec
  *

include/linux/of_fdt.h

@@ -0,0 +1,26 @@
+/*
+ * Definitions for working with the Flattened Device Tree data format
+ *
+ * Copyright 2009 Benjamin Herrenschmidt, IBM Corp
+ * benh@kernel.crashing.org
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ */
+
+#ifndef _LINUX_OF_FDT_H
+#define _LINUX_OF_FDT_H
+
+/* Definitions used by the flattened device tree */
+#define OF_DT_HEADER		0xd00dfeed	/* marker */
+#define OF_DT_BEGIN_NODE	0x1		/* Start of node, full name */
+#define OF_DT_END_NODE		0x2		/* End node */
+#define OF_DT_PROP		0x3		/* Property: name off, size,
+						 * content */
+#define OF_DT_NOP		0x4		/* nop */
+#define OF_DT_END		0x9
+
+#define OF_DT_VERSION		0x10
+
+#endif /* _LINUX_OF_FDT_H */