Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6

* 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6:
  of: merge of_find_all_nodes() implementations
  of: merge other miscellaneous prototypes
  of: merge of_*_flat_dt*() functions
  of: merge of_node_get(), of_node_put() and of_find_all_nodes()
  of: merge of_read_number() an of_read_ulong()
  of: merge of_node_*_flag() and set_node_proc_entry()
  of: merge struct boot_param_header from Microblaze and PowerPC
  of: add common header for flattened device tree representation
  of: Move OF_IS_DYNAMIC and OF_MARK_DYNAMIC macros to of.h
  of: merge struct device_node
  of: merge phandle, ihandle and struct property
  of: Rework linux/of.h and asm/prom.h include ordering

arch/microblaze/include/asm/prom.h

@@ -12,23 +12,15 @@
  * 2 of the License, or (at your option) any later version.
  */
 
+#include <linux/of.h>	/* linux/of.h gets to determine #include ordering */
+
 #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>
@@ -41,122 +33,19 @@
 #define of_prop_cmp(s1, s2)		strcmp((s1), (s2))
 #define of_node_cmp(s1, s2)		strcasecmp((s1), (s2))
 
-/*
- * This is what gets passed to the kernel by prom_init or kexec
- *
- * The dt struct contains the device tree structure, full pathes and
- * property contents. The dt strings contain a separate block with just
- * the strings for the property names, and is fully page aligned and
- * self contained in a page, so that it can be kept around by the kernel,
- * each property name appears only once in this page (cheap compression)
- *
- * the mem_rsvmap contains a map of reserved ranges of physical memory,
- * passing it here instead of in the device-tree itself greatly simplifies
- * the job of everybody. It's just a list of u64 pairs (base/size) that
- * ends when size is 0
- */
-struct boot_param_header {
-	u32	magic; /* magic word OF_DT_HEADER */
-	u32	totalsize; /* total size of DT block */
-	u32	off_dt_struct; /* offset to structure */
-	u32	off_dt_strings; /* offset to strings */
-	u32	off_mem_rsvmap; /* offset to memory reserve map */
-	u32	version; /* format version */
-	u32	last_comp_version; /* last compatible version */
-	/* version 2 fields below */
-	u32	boot_cpuid_phys; /* Physical CPU id we're booting on */
-	/* version 3 fields below */
-	u32	dt_strings_size; /* size of the DT strings block */
-	/* version 17 fields below */
-	u32	dt_struct_size; /* size of the DT structure block */
-};
-
-typedef u32 phandle;
-typedef u32 ihandle;
-
-struct property {
-	char	*name;
-	int	length;
-	void	*value;
-	struct property *next;
-};
-
-struct device_node {
-	const char *name;
-	const char *type;
-	phandle	node;
-	phandle linux_phandle;
-	char	*full_name;
-
-	struct	property *properties;
-	struct	property *deadprops; /* removed properties */
-	struct	device_node *parent;
-	struct	device_node *child;
-	struct	device_node *sibling;
-	struct	device_node *next; /* next device of same type */
-	struct	device_node *allnext; /* next in list of all nodes */
-	struct	proc_dir_entry *pde; /* this node's proc directory */
-	struct	kref kref;
-	unsigned long _flags;
-	void	*data;
-};
-
 extern struct device_node *of_chosen;
 
-static inline int of_node_check_flag(struct device_node *n, unsigned long flag)
-{
-	return test_bit(flag, &n->_flags);
-}
-
-static inline void of_node_set_flag(struct device_node *n, unsigned long flag)
-{
-	set_bit(flag, &n->_flags);
-}
-
 #define HAVE_ARCH_DEVTREE_FIXUPS
 
-static inline void set_node_proc_entry(struct device_node *dn,
-					struct proc_dir_entry *de)
-{
-	dn->pde = de;
-}
-
 extern struct device_node *allnodes;	/* temporary while merging */
 extern rwlock_t devtree_lock;	/* temporary while merging */
 
-extern struct device_node *of_find_all_nodes(struct device_node *prev);
-extern struct device_node *of_node_get(struct device_node *node);
-extern void of_node_put(struct device_node *node);
-
-/* For scanning the flat device-tree at boot time */
-extern int __init of_scan_flat_dt(int (*it)(unsigned long node,
-					const char *uname, int depth,
-					void *data),
-				void *data);
-extern void *__init of_get_flat_dt_prop(unsigned long node, const char *name,
-					unsigned long *size);
-extern int __init
-		of_flat_dt_is_compatible(unsigned long node, const char *name);
-extern unsigned long __init of_get_flat_dt_root(void);
-
 /* For updating the device tree at runtime */
 extern void of_attach_node(struct device_node *);
 extern void of_detach_node(struct device_node *);
 
 /* Other Prototypes */
-extern void finish_device_tree(void);
-extern void unflatten_device_tree(void);
 extern int early_uartlite_console(void);
-extern void early_init_devtree(void *);
-extern int machine_is_compatible(const char *compat);
-extern void print_properties(struct device_node *node);
-extern int prom_n_intr_cells(struct device_node *np);
-extern void prom_get_irq_senses(unsigned char *senses, int off, int max);
-extern int prom_add_property(struct device_node *np, struct property *prop);
-extern int prom_remove_property(struct device_node *np, struct property *prop);
-extern int prom_update_property(struct device_node *np,
-				struct property *newprop,
-				struct property *oldprop);
 
 extern struct resource *request_OF_resource(struct device_node *node,
 				int index, const char *name_postfix);
@@ -166,18 +55,6 @@ extern int release_OF_resource(struct device_node *node, int index);
  * OF address retreival & translation
  */
 
-/* Helper to read a big number; size is in cells (not bytes) */
-static inline u64 of_read_number(const u32 *cell, int size)
-{
-	u64 r = 0;
-	while (size--)
-		r = (r << 32) | *(cell++);
-	return r;
-}
-
-/* Like of_read_number, but we want an unsigned long result */
-#define of_read_ulong(cell, size)	of_read_number(cell, size)
-
 /* Translate an OF address block into a CPU physical address
  */
 extern u64 of_translate_address(struct device_node *np, const u32 *addr);
@@ -305,12 +182,6 @@ extern int of_irq_to_resource(struct device_node *dev, int index,
  */
 extern void __iomem *of_iomap(struct device_node *device, int index);
 
-/*
- * NB: This is here while we transition from using asm/prom.h
- * to linux/of.h
- */
-#include <linux/of.h>
-
 #endif /* __ASSEMBLY__ */
 #endif /* __KERNEL__ */
 #endif /* _ASM_MICROBLAZE_PROM_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/microblaze/kernel/prom.c

@@ -859,29 +859,6 @@ struct device_node *of_find_node_by_phandle(phandle handle)
 }
 EXPORT_SYMBOL(of_find_node_by_phandle);
 
-/**
- *	of_find_all_nodes - Get next node in global list
- *	@prev:	Previous node or NULL to start iteration
- *		of_node_put() will be called on it
- *
- *	Returns a node pointer with refcount incremented, use
- *	of_node_put() on it when done.
- */
-struct device_node *of_find_all_nodes(struct device_node *prev)
-{
-	struct device_node *np;
-
-	read_lock(&devtree_lock);
-	np = prev ? prev->allnext : allnodes;
-	for (; np != NULL; np = np->allnext)
-		if (of_node_get(np))
-			break;
-	of_node_put(prev);
-	read_unlock(&devtree_lock);
-	return np;
-}
-EXPORT_SYMBOL(of_find_all_nodes);
-
 /**
  *	of_node_get - Increment refcount of a node
  *	@node:	Node to inc refcount, NULL is supported to

arch/powerpc/include/asm/prom.h

+#include <linux/of.h>	/* linux/of.h gets to determine #include ordering */
 #ifndef _POWERPC_PROM_H
 #define _POWERPC_PROM_H
 #ifdef __KERNEL__
@@ -16,6 +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>
@@ -28,133 +30,14 @@
 #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
- *
- * The dt struct contains the device tree structure, full pathes and
- * property contents. The dt strings contain a separate block with just
- * the strings for the property names, and is fully page aligned and
- * self contained in a page, so that it can be kept around by the kernel,
- * each property name appears only once in this page (cheap compression)
- *
- * the mem_rsvmap contains a map of reserved ranges of physical memory,
- * passing it here instead of in the device-tree itself greatly simplifies
- * the job of everybody. It's just a list of u64 pairs (base/size) that
- * ends when size is 0
- */
-struct boot_param_header
-{
-	u32	magic;			/* magic word OF_DT_HEADER */
-	u32	totalsize;		/* total size of DT block */
-	u32	off_dt_struct;		/* offset to structure */
-	u32	off_dt_strings;		/* offset to strings */
-	u32	off_mem_rsvmap;		/* offset to memory reserve map */
-	u32	version;		/* format version */
-	u32	last_comp_version;	/* last compatible version */
-	/* version 2 fields below */
-	u32	boot_cpuid_phys;	/* Physical CPU id we're booting on */
-	/* version 3 fields below */
-	u32	dt_strings_size;	/* size of the DT strings block */
-	/* version 17 fields below */
-	u32	dt_struct_size;		/* size of the DT structure block */
-};
-
-
-
-typedef u32 phandle;
-typedef u32 ihandle;
-
-struct property {
-	char	*name;
-	int	length;
-	void	*value;
-	struct property *next;
-};
-
-struct device_node {
-	const char *name;
-	const char *type;
-	phandle	node;
-	phandle linux_phandle;
-	char	*full_name;
-
-	struct	property *properties;
-	struct  property *deadprops; /* removed properties */
-	struct	device_node *parent;
-	struct	device_node *child;
-	struct	device_node *sibling;
-	struct	device_node *next;	/* next device of same type */
-	struct	device_node *allnext;	/* next in list of all nodes */
-	struct  proc_dir_entry *pde;	/* this node's proc directory */
-	struct  kref kref;
-	unsigned long _flags;
-	void	*data;
-};
-
 extern struct device_node *of_chosen;
 
-static inline int of_node_check_flag(struct device_node *n, unsigned long flag)
-{
-	return test_bit(flag, &n->_flags);
-}
-
-static inline void of_node_set_flag(struct device_node *n, unsigned long flag)
-{
-	set_bit(flag, &n->_flags);
-}
-
-
 #define HAVE_ARCH_DEVTREE_FIXUPS
 
-static inline void set_node_proc_entry(struct device_node *dn, struct proc_dir_entry *de)
-{
-	dn->pde = de;
-}
-
-
-extern struct device_node *of_find_all_nodes(struct device_node *prev);
-extern struct device_node *of_node_get(struct device_node *node);
-extern void of_node_put(struct device_node *node);
-
-/* For scanning the flat device-tree at boot time */
-extern int __init of_scan_flat_dt(int (*it)(unsigned long node,
-					    const char *uname, int depth,
-					    void *data),
-				  void *data);
-extern void* __init of_get_flat_dt_prop(unsigned long node, const char *name,
-					unsigned long *size);
-extern int __init of_flat_dt_is_compatible(unsigned long node, const char *name);
-extern unsigned long __init of_get_flat_dt_root(void);
-
 /* For updating the device tree at runtime */
 extern void of_attach_node(struct device_node *);
 extern void of_detach_node(struct device_node *);
 
-/* Other Prototypes */
-extern void finish_device_tree(void);
-extern void unflatten_device_tree(void);
-extern void early_init_devtree(void *);
-extern int machine_is_compatible(const char *compat);
-extern void print_properties(struct device_node *node);
-extern int prom_n_intr_cells(struct device_node* np);
-extern void prom_get_irq_senses(unsigned char *senses, int off, int max);
-extern int prom_add_property(struct device_node* np, struct property* prop);
-extern int prom_remove_property(struct device_node *np, struct property *prop);
-extern int prom_update_property(struct device_node *np,
-				struct property *newprop,
-				struct property *oldprop);
-
 #ifdef CONFIG_PPC32
 /*
  * PCI <-> OF matching functions
@@ -178,26 +61,6 @@ extern int release_OF_resource(struct device_node* node, int index);
  * OF address retreival & translation
  */
 
-
-/* Helper to read a big number; size is in cells (not bytes) */
-static inline u64 of_read_number(const u32 *cell, int size)
-{
-	u64 r = 0;
-	while (size--)
-		r = (r << 32) | *(cell++);
-	return r;
-}
-
-/* Like of_read_number, but we want an unsigned long result */
-#ifdef CONFIG_PPC32
-static inline unsigned long of_read_ulong(const u32 *cell, int size)
-{
-	return cell[size-1];
-}
-#else
-#define of_read_ulong(cell, size)	of_read_number(cell, size)
-#endif
-
 /* Translate an OF address block into a CPU physical address
  */
 extern u64 of_translate_address(struct device_node *np, const u32 *addr);
@@ -349,11 +212,5 @@ extern int of_irq_to_resource(struct device_node *dev, int index,
  */
 extern void __iomem *of_iomap(struct device_node *device, int index);
 
-/*
- * NB:  This is here while we transition from using asm/prom.h
- * to linux/of.h
- */
-#include <linux/of.h>
-
 #endif /* __KERNEL__ */
 #endif /* _POWERPC_PROM_H */

arch/powerpc/kernel/prom.c

@@ -1316,29 +1316,6 @@ struct device_node *of_find_next_cache_node(struct device_node *np)
 	return NULL;
 }
 
-/**
- *	of_find_all_nodes - Get next node in global list
- *	@prev:	Previous node or NULL to start iteration
- *		of_node_put() will be called on it
- *
- *	Returns a node pointer with refcount incremented, use
- *	of_node_put() on it when done.
- */
-struct device_node *of_find_all_nodes(struct device_node *prev)
-{
-	struct device_node *np;
-
-	read_lock(&devtree_lock);
-	np = prev ? prev->allnext : allnodes;
-	for (; np != 0; np = np->allnext)
-		if (of_node_get(np))
-			break;
-	of_node_put(prev);
-	read_unlock(&devtree_lock);
-	return np;
-}
-EXPORT_SYMBOL(of_find_all_nodes);
-
 /**
  *	of_node_get - Increment refcount of a node
  *	@node:	Node to inc refcount, NULL is supported to

arch/sparc/include/asm/prom.h

+#include <linux/of.h>	/* linux/of.h gets to determine #include ordering */
 #ifndef _SPARC_PROM_H
 #define _SPARC_PROM_H
 #ifdef __KERNEL__
@@ -28,50 +29,11 @@
 #define of_prop_cmp(s1, s2)		strcasecmp((s1), (s2))
 #define of_node_cmp(s1, s2)		strcmp((s1), (s2))
 
-typedef u32 phandle;
-typedef u32 ihandle;
-
-struct property {
-	char	*name;
-	int	length;
-	void	*value;
-	struct property *next;
-	unsigned long _flags;
-	unsigned int unique_id;
-};
-
-struct of_irq_controller;
-struct device_node {
-	const char	*name;
-	const char	*type;
-	phandle	node;
-	char	*path_component_name;
-	char	*full_name;
-
-	struct	property *properties;
-	struct  property *deadprops; /* removed properties */
-	struct	device_node *parent;
-	struct	device_node *child;
-	struct	device_node *sibling;
-	struct	device_node *next;	/* next device of same type */
-	struct	device_node *allnext;	/* next in list of all nodes */
-	struct  proc_dir_entry *pde;	/* this node's proc directory */
-	struct  kref kref;
-	unsigned long _flags;
-	void	*data;
-	unsigned int unique_id;
-
-	struct of_irq_controller *irq_trans;
-};
-
 struct of_irq_controller {
 	unsigned int	(*irq_build)(struct device_node *, unsigned int, void *);
 	void		*data;
 };
 
-#define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags)
-#define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags)
-
 extern struct device_node *of_find_node_by_cpuid(int cpuid);
 extern int of_set_property(struct device_node *node, const char *name, void *val, int len);
 extern struct mutex of_set_property_mutex;
@@ -89,15 +51,6 @@ extern void prom_build_devicetree(void);
 extern void of_populate_present_mask(void);
 extern void of_fill_in_cpu_data(void);
 
-/* Dummy ref counting routines - to be implemented later */
-static inline struct device_node *of_node_get(struct device_node *node)
-{
-	return node;
-}
-static inline void of_node_put(struct device_node *node)
-{
-}
-
 /* These routines are here to provide compatibility with how powerpc
  * handles IRQ mapping for OF device nodes.  We precompute and permanently
  * register them in the of_device objects, whereas powerpc computes them
@@ -108,12 +61,6 @@ static inline void irq_dispose_mapping(unsigned int virq)
 {
 }
 
-/*
- * NB:  This is here while we transition from using asm/prom.h
- * to linux/of.h
- */
-#include <linux/of.h>
-
 extern struct device_node *of_console_device;
 extern char *of_console_path;
 extern char *of_console_options;

drivers/of/base.c

@@ -9,7 +9,8 @@
  *
  *  Adapted for sparc and sparc64 by David S. Miller davem@davemloft.net
  *
- *  Reconsolidated from arch/x/kernel/prom.c by Stephen Rothwell.
+ *  Reconsolidated from arch/x/kernel/prom.c by Stephen Rothwell and
+ *  Grant Likely.
  *
  *      This program is free software; you can redistribute it and/or
  *      modify it under the terms of the GNU General Public License
@@ -82,6 +83,29 @@ struct property *of_find_property(const struct device_node *np,
 }
 EXPORT_SYMBOL(of_find_property);
 
+/**
+ * of_find_all_nodes - Get next node in global list
+ * @prev:	Previous node or NULL to start iteration
+ *		of_node_put() will be called on it
+ *
+ * Returns a node pointer with refcount incremented, use
+ * of_node_put() on it when done.
+ */
+struct device_node *of_find_all_nodes(struct device_node *prev)
+{
+	struct device_node *np;
+
+	read_lock(&devtree_lock);
+	np = prev ? prev->allnext : allnodes;
+	for (; np != NULL; np = np->allnext)
+		if (of_node_get(np))
+			break;
+	of_node_put(prev);
+	read_unlock(&devtree_lock);
+	return np;
+}
+EXPORT_SYMBOL(of_find_all_nodes);
+
 /*
  * Find a property with a given name for a given node
  * and return the value.

include/linux/of.h

@@ -17,14 +17,117 @@
  */
 #include <linux/types.h>
 #include <linux/bitops.h>
+#include <linux/kref.h>
 #include <linux/mod_devicetable.h>
 
+typedef u32 phandle;
+typedef u32 ihandle;
+
+struct property {
+	char	*name;
+	int	length;
+	void	*value;
+	struct property *next;
+	unsigned long _flags;
+	unsigned int unique_id;
+};
+
+#if defined(CONFIG_SPARC)
+struct of_irq_controller;
+#endif
+
+struct device_node {
+	const char *name;
+	const char *type;
+	phandle	node;
+#if !defined(CONFIG_SPARC)
+	phandle linux_phandle;
+#endif
+	char	*full_name;
+
+	struct	property *properties;
+	struct	property *deadprops;	/* removed properties */
+	struct	device_node *parent;
+	struct	device_node *child;
+	struct	device_node *sibling;
+	struct	device_node *next;	/* next device of same type */
+	struct	device_node *allnext;	/* next in list of all nodes */
+	struct	proc_dir_entry *pde;	/* this node's proc directory */
+	struct	kref kref;
+	unsigned long _flags;
+	void	*data;
+#if defined(CONFIG_SPARC)
+	char	*path_component_name;
+	unsigned int unique_id;
+	struct of_irq_controller *irq_trans;
+#endif
+};
+
+static inline int of_node_check_flag(struct device_node *n, unsigned long flag)
+{
+	return test_bit(flag, &n->_flags);
+}
+
+static inline void of_node_set_flag(struct device_node *n, unsigned long flag)
+{
+	set_bit(flag, &n->_flags);
+}
+
+static inline void
+set_node_proc_entry(struct device_node *dn, struct proc_dir_entry *de)
+{
+	dn->pde = de;
+}
+
+extern struct device_node *of_find_all_nodes(struct device_node *prev);
+
+#if defined(CONFIG_SPARC)
+/* Dummy ref counting routines - to be implemented later */
+static inline struct device_node *of_node_get(struct device_node *node)
+{
+	return node;
+}
+static inline void of_node_put(struct device_node *node)
+{
+}
+
+#else
+extern struct device_node *of_node_get(struct device_node *node);
+extern void of_node_put(struct device_node *node);
+#endif
+
+/*
+ * OF address retreival & translation
+ */
+
+/* Helper to read a big number; size is in cells (not bytes) */
+static inline u64 of_read_number(const u32 *cell, int size)
+{
+	u64 r = 0;
+	while (size--)
+		r = (r << 32) | *(cell++);
+	return r;
+}
+
+/* Like of_read_number, but we want an unsigned long result */
+#ifdef CONFIG_PPC32
+static inline unsigned long of_read_ulong(const u32 *cell, int size)
+{
+	return cell[size-1];
+}
+#else
+#define of_read_ulong(cell, size)	of_read_number(cell, size)
+#endif
+
 #include <asm/prom.h>
 
 /* flag descriptions */
 #define OF_DYNAMIC	1 /* node and properties were allocated via kmalloc */
 #define OF_DETACHED	2 /* node has been detached from the device tree */
 
+#define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags)
+#define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags)
+
 #define OF_BAD_ADDR	((u64)-1)
 
 extern struct device_node *of_find_node_by_name(struct device_node *from,

include/linux/of_fdt.h

+/*
+ * 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
+
+#include <linux/types.h>
+#include <linux/init.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
+
+#ifndef __ASSEMBLY__
+/*
+ * This is what gets passed to the kernel by prom_init or kexec
+ *
+ * The dt struct contains the device tree structure, full pathes and
+ * property contents. The dt strings contain a separate block with just
+ * the strings for the property names, and is fully page aligned and
+ * self contained in a page, so that it can be kept around by the kernel,
+ * each property name appears only once in this page (cheap compression)
+ *
+ * the mem_rsvmap contains a map of reserved ranges of physical memory,
+ * passing it here instead of in the device-tree itself greatly simplifies
+ * the job of everybody. It's just a list of u64 pairs (base/size) that
+ * ends when size is 0
+ */
+struct boot_param_header {
+	u32	magic;			/* magic word OF_DT_HEADER */
+	u32	totalsize;		/* total size of DT block */
+	u32	off_dt_struct;		/* offset to structure */
+	u32	off_dt_strings;		/* offset to strings */
+	u32	off_mem_rsvmap;		/* offset to memory reserve map */
+	u32	version;		/* format version */
+	u32	last_comp_version;	/* last compatible version */
+	/* version 2 fields below */
+	u32	boot_cpuid_phys;	/* Physical CPU id we're booting on */
+	/* version 3 fields below */
+	u32	dt_strings_size;	/* size of the DT strings block */
+	/* version 17 fields below */
+	u32	dt_struct_size;		/* size of the DT structure block */
+};
+
+/* For scanning the flat device-tree at boot time */
+extern int __init of_scan_flat_dt(int (*it)(unsigned long node,
+					    const char *uname, int depth,
+					    void *data),
+				  void *data);
+extern void __init *of_get_flat_dt_prop(unsigned long node, const char *name,
+					unsigned long *size);
+extern int __init of_flat_dt_is_compatible(unsigned long node,
+					   const char *name);
+extern unsigned long __init of_get_flat_dt_root(void);
+
+/* Other Prototypes */
+extern void finish_device_tree(void);
+extern void unflatten_device_tree(void);
+extern void early_init_devtree(void *);
+extern int machine_is_compatible(const char *compat);
+extern void print_properties(struct device_node *node);
+extern int prom_n_intr_cells(struct device_node* np);
+extern void prom_get_irq_senses(unsigned char *senses, int off, int max);
+extern int prom_add_property(struct device_node* np, struct property* prop);
+extern int prom_remove_property(struct device_node *np, struct property *prop);
+extern int prom_update_property(struct device_node *np,
+				struct property *newprop,
+				struct property *oldprop);
+
+#endif /* __ASSEMBLY__ */
+#endif /* _LINUX_OF_FDT_H */