These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

11 files changed, 385 insertions, 77 deletions

diff --git a/kernel/scripts/dtc/libfdt/Makefile.libfdt b/kernel/scripts/dtc/libfdt/Makefile.libfdt
index 91126c000..09c322ed8 100644
--- a/kernel/scripts/dtc/libfdt/Makefile.libfdt
+++ b/kernel/scripts/dtc/libfdt/Makefile.libfdt
@@ -6,5 +6,6 @@
 LIBFDT_soname = libfdt.$(SHAREDLIB_EXT).1
 LIBFDT_INCLUDES = fdt.h libfdt.h libfdt_env.h
 LIBFDT_VERSION = version.lds
-LIBFDT_SRCS = fdt.c fdt_ro.c fdt_wip.c fdt_sw.c fdt_rw.c fdt_strerror.c fdt_empty_tree.c
+LIBFDT_SRCS = fdt.c fdt_ro.c fdt_wip.c fdt_sw.c fdt_rw.c fdt_strerror.c fdt_empty_tree.c \
+	fdt_addresses.c
 LIBFDT_OBJS = $(LIBFDT_SRCS:%.c=%.o)
diff --git a/kernel/scripts/dtc/libfdt/fdt.c b/kernel/scripts/dtc/libfdt/fdt.c
index e56833ae9..2ce6a4417 100644
--- a/kernel/scripts/dtc/libfdt/fdt.c
+++ b/kernel/scripts/dtc/libfdt/fdt.c
@@ -92,7 +92,7 @@ const void *fdt_offset_ptr(const void *fdt, int offset, unsigned int len)
 
 uint32_t fdt_next_tag(const void *fdt, int startoffset, int *nextoffset)
 {
-	const uint32_t *tagp, *lenp;
+	const fdt32_t *tagp, *lenp;
 	uint32_t tag;
 	int offset = startoffset;
 	const char *p;
@@ -198,6 +198,34 @@ int fdt_next_node(const void *fdt, int offset, int *depth)
 	return offset;
 }
 
+int fdt_first_subnode(const void *fdt, int offset)
+{
+	int depth = 0;
+
+	offset = fdt_next_node(fdt, offset, &depth);
+	if (offset < 0 || depth != 1)
+		return -FDT_ERR_NOTFOUND;
+
+	return offset;
+}
+
+int fdt_next_subnode(const void *fdt, int offset)
+{
+	int depth = 1;
+
+	/*
+	 * With respect to the parent, the depth of the next subnode will be
+	 * the same as the last.
+	 */
+	do {
+		offset = fdt_next_node(fdt, offset, &depth);
+		if (offset < 0 || depth < 1)
+			return -FDT_ERR_NOTFOUND;
+	} while (depth > 1);
+
+	return offset;
+}
+
 const char *_fdt_find_string(const char *strtab, int tabsize, const char *s)
 {
 	int len = strlen(s) + 1;
diff --git a/kernel/scripts/dtc/libfdt/fdt.h b/kernel/scripts/dtc/libfdt/fdt.h
index 48ccfd910..526aedb51 100644
--- a/kernel/scripts/dtc/libfdt/fdt.h
+++ b/kernel/scripts/dtc/libfdt/fdt.h
@@ -1,48 +1,99 @@
 #ifndef _FDT_H
 #define _FDT_H
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ * Copyright 2012 Kim Phillips, Freescale Semiconductor.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ *  a) This library 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 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 General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public
+ *     License along with this library; if not, write to the Free
+ *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ *     MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ *  b) Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *     1. Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *     2. 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 __ASSEMBLY__
 
 struct fdt_header {
-	uint32_t magic;			 /* magic word FDT_MAGIC */
-	uint32_t totalsize;		 /* total size of DT block */
-	uint32_t off_dt_struct;		 /* offset to structure */
-	uint32_t off_dt_strings;	 /* offset to strings */
-	uint32_t off_mem_rsvmap;	 /* offset to memory reserve map */
-	uint32_t version;		 /* format version */
-	uint32_t last_comp_version;	 /* last compatible version */
+	fdt32_t magic;			 /* magic word FDT_MAGIC */
+	fdt32_t totalsize;		 /* total size of DT block */
+	fdt32_t off_dt_struct;		 /* offset to structure */
+	fdt32_t off_dt_strings;		 /* offset to strings */
+	fdt32_t off_mem_rsvmap;		 /* offset to memory reserve map */
+	fdt32_t version;		 /* format version */
+	fdt32_t last_comp_version;	 /* last compatible version */
 
 	/* version 2 fields below */
-	uint32_t boot_cpuid_phys;	 /* Which physical CPU id we're
+	fdt32_t boot_cpuid_phys;	 /* Which physical CPU id we're
 					    booting on */
 	/* version 3 fields below */
-	uint32_t size_dt_strings;	 /* size of the strings block */
+	fdt32_t size_dt_strings;	 /* size of the strings block */
 
 	/* version 17 fields below */
-	uint32_t size_dt_struct;	 /* size of the structure block */
+	fdt32_t size_dt_struct;		 /* size of the structure block */
 };
 
 struct fdt_reserve_entry {
-	uint64_t address;
-	uint64_t size;
+	fdt64_t address;
+	fdt64_t size;
 };
 
 struct fdt_node_header {
-	uint32_t tag;
+	fdt32_t tag;
 	char name[0];
 };
 
 struct fdt_property {
-	uint32_t tag;
-	uint32_t len;
-	uint32_t nameoff;
+	fdt32_t tag;
+	fdt32_t len;
+	fdt32_t nameoff;
 	char data[0];
 };
 
 #endif /* !__ASSEMBLY */
 
 #define FDT_MAGIC	0xd00dfeed	/* 4: version, 4: total size */
-#define FDT_TAGSIZE	sizeof(uint32_t)
+#define FDT_TAGSIZE	sizeof(fdt32_t)
 
 #define FDT_BEGIN_NODE	0x1		/* Start node: full name */
 #define FDT_END_NODE	0x2		/* End node */
@@ -51,10 +102,10 @@ struct fdt_property {
 #define FDT_NOP		0x4		/* nop */
 #define FDT_END		0x9
 
-#define FDT_V1_SIZE	(7*sizeof(uint32_t))
-#define FDT_V2_SIZE	(FDT_V1_SIZE + sizeof(uint32_t))
-#define FDT_V3_SIZE	(FDT_V2_SIZE + sizeof(uint32_t))
+#define FDT_V1_SIZE	(7*sizeof(fdt32_t))
+#define FDT_V2_SIZE	(FDT_V1_SIZE + sizeof(fdt32_t))
+#define FDT_V3_SIZE	(FDT_V2_SIZE + sizeof(fdt32_t))
 #define FDT_V16_SIZE	FDT_V3_SIZE
-#define FDT_V17_SIZE	(FDT_V16_SIZE + sizeof(uint32_t))
+#define FDT_V17_SIZE	(FDT_V16_SIZE + sizeof(fdt32_t))
 
 #endif /* _FDT_H */
diff --git a/kernel/scripts/dtc/libfdt/fdt_empty_tree.c b/kernel/scripts/dtc/libfdt/fdt_empty_tree.c
index f2ae9b77c..f72d13b1d 100644
--- a/kernel/scripts/dtc/libfdt/fdt_empty_tree.c
+++ b/kernel/scripts/dtc/libfdt/fdt_empty_tree.c
@@ -81,3 +81,4 @@ int fdt_create_empty_tree(void *buf, int bufsize)
 
 	return fdt_open_into(buf, buf, bufsize);
 }
+
diff --git a/kernel/scripts/dtc/libfdt/fdt_ro.c b/kernel/scripts/dtc/libfdt/fdt_ro.c
index 02b6d6875..a65e4b5b7 100644
--- a/kernel/scripts/dtc/libfdt/fdt_ro.c
+++ b/kernel/scripts/dtc/libfdt/fdt_ro.c
@@ -154,9 +154,9 @@ int fdt_subnode_offset(const void *fdt, int parentoffset,
 	return fdt_subnode_offset_namelen(fdt, parentoffset, name, strlen(name));
 }
 
-int fdt_path_offset(const void *fdt, const char *path)
+int fdt_path_offset_namelen(const void *fdt, const char *path, int namelen)
 {
-	const char *end = path + strlen(path);
+	const char *end = path + namelen;
 	const char *p = path;
 	int offset = 0;
 
@@ -164,7 +164,7 @@ int fdt_path_offset(const void *fdt, const char *path)
 
 	/* see if we have an alias */
 	if (*path != '/') {
-		const char *q = strchr(path, '/');
+		const char *q = memchr(path, '/', end - p);
 
 		if (!q)
 			q = end;
@@ -177,14 +177,15 @@ int fdt_path_offset(const void *fdt, const char *path)
 		p = q;
 	}
 
-	while (*p) {
+	while (p < end) {
 		const char *q;
 
-		while (*p == '/')
+		while (*p == '/') {
 			p++;
-		if (! *p)
-			return offset;
-		q = strchr(p, '/');
+			if (p == end)
+				return offset;
+		}
+		q = memchr(p, '/', end - p);
 		if (! q)
 			q = end;
 
@@ -198,6 +199,11 @@ int fdt_path_offset(const void *fdt, const char *path)
 	return offset;
 }
 
+int fdt_path_offset(const void *fdt, const char *path)
+{
+	return fdt_path_offset_namelen(fdt, path, strlen(path));
+}
+
 const char *fdt_get_name(const void *fdt, int nodeoffset, int *len)
 {
 	const struct fdt_node_header *nh = _fdt_offset_ptr(fdt, nodeoffset);
@@ -322,7 +328,7 @@ const void *fdt_getprop(const void *fdt, int nodeoffset,
 
 uint32_t fdt_get_phandle(const void *fdt, int nodeoffset)
 {
-	const uint32_t *php;
+	const fdt32_t *php;
 	int len;
 
 	/* FIXME: This is a bit sub-optimal, since we potentially scan
@@ -515,8 +521,7 @@ int fdt_node_offset_by_phandle(const void *fdt, uint32_t phandle)
 	return offset; /* error from fdt_next_node() */
 }
 
-static int _fdt_stringlist_contains(const char *strlist, int listlen,
-				    const char *str)
+int fdt_stringlist_contains(const char *strlist, int listlen, const char *str)
 {
 	int len = strlen(str);
 	const char *p;
@@ -542,7 +547,7 @@ int fdt_node_check_compatible(const void *fdt, int nodeoffset,
 	prop = fdt_getprop(fdt, nodeoffset, "compatible", &len);
 	if (!prop)
 		return len;
-	if (_fdt_stringlist_contains(prop, len, compatible))
+	if (fdt_stringlist_contains(prop, len, compatible))
 		return 0;
 	else
 		return 1;
diff --git a/kernel/scripts/dtc/libfdt/fdt_rw.c b/kernel/scripts/dtc/libfdt/fdt_rw.c
index 24437dfc3..70adec6c3 100644
--- a/kernel/scripts/dtc/libfdt/fdt_rw.c
+++ b/kernel/scripts/dtc/libfdt/fdt_rw.c
@@ -84,9 +84,9 @@ static int _fdt_rw_check_header(void *fdt)
 
 #define FDT_RW_CHECK_HEADER(fdt) \
 	{ \
-		int err; \
-		if ((err = _fdt_rw_check_header(fdt)) != 0) \
-			return err; \
+		int __err; \
+		if ((__err = _fdt_rw_check_header(fdt)) != 0) \
+			return __err; \
 	}
 
 static inline int _fdt_data_size(void *fdt)
@@ -339,7 +339,7 @@ int fdt_add_subnode_namelen(void *fdt, int parentoffset,
 	int nodelen;
 	int err;
 	uint32_t tag;
-	uint32_t *endtag;
+	fdt32_t *endtag;
 
 	FDT_RW_CHECK_HEADER(fdt);
 
@@ -366,7 +366,7 @@ int fdt_add_subnode_namelen(void *fdt, int parentoffset,
 	nh->tag = cpu_to_fdt32(FDT_BEGIN_NODE);
 	memset(nh->name, 0, FDT_TAGALIGN(namelen+1));
 	memcpy(nh->name, name, namelen);
-	endtag = (uint32_t *)((char *)nh + nodelen - FDT_TAGSIZE);
+	endtag = (fdt32_t *)((char *)nh + nodelen - FDT_TAGSIZE);
 	*endtag = cpu_to_fdt32(FDT_END_NODE);
 
 	return offset;
diff --git a/kernel/scripts/dtc/libfdt/fdt_sw.c b/kernel/scripts/dtc/libfdt/fdt_sw.c
index 55ebebf1e..6a804859f 100644
--- a/kernel/scripts/dtc/libfdt/fdt_sw.c
+++ b/kernel/scripts/dtc/libfdt/fdt_sw.c
@@ -107,6 +107,38 @@ int fdt_create(void *buf, int bufsize)
 	return 0;
 }
 
+int fdt_resize(void *fdt, void *buf, int bufsize)
+{
+	size_t headsize, tailsize;
+	char *oldtail, *newtail;
+
+	FDT_SW_CHECK_HEADER(fdt);
+
+	headsize = fdt_off_dt_struct(fdt);
+	tailsize = fdt_size_dt_strings(fdt);
+
+	if ((headsize + tailsize) > bufsize)
+		return -FDT_ERR_NOSPACE;
+
+	oldtail = (char *)fdt + fdt_totalsize(fdt) - tailsize;
+	newtail = (char *)buf + bufsize - tailsize;
+
+	/* Two cases to avoid clobbering data if the old and new
+	 * buffers partially overlap */
+	if (buf <= fdt) {
+		memmove(buf, fdt, headsize);
+		memmove(newtail, oldtail, tailsize);
+	} else {
+		memmove(newtail, oldtail, tailsize);
+		memmove(buf, fdt, headsize);
+	}
+
+	fdt_set_off_dt_strings(buf, bufsize);
+	fdt_set_totalsize(buf, bufsize);
+
+	return 0;
+}
+
 int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size)
 {
 	struct fdt_reserve_entry *re;
@@ -153,7 +185,7 @@ int fdt_begin_node(void *fdt, const char *name)
 
 int fdt_end_node(void *fdt)
 {
-	uint32_t *en;
+	fdt32_t *en;
 
 	FDT_SW_CHECK_HEADER(fdt);
 
@@ -213,7 +245,7 @@ int fdt_property(void *fdt, const char *name, const void *val, int len)
 int fdt_finish(void *fdt)
 {
 	char *p = (char *)fdt;
-	uint32_t *end;
+	fdt32_t *end;
 	int oldstroffset, newstroffset;
 	uint32_t tag;
 	int offset, nextoffset;
diff --git a/kernel/scripts/dtc/libfdt/fdt_wip.c b/kernel/scripts/dtc/libfdt/fdt_wip.c
index 6025fa1fe..c5bbb68d3 100644
--- a/kernel/scripts/dtc/libfdt/fdt_wip.c
+++ b/kernel/scripts/dtc/libfdt/fdt_wip.c
@@ -74,7 +74,7 @@ int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
 
 static void _fdt_nop_region(void *start, int len)
 {
-	uint32_t *p;
+	fdt32_t *p;
 
 	for (p = start; (char *)p < ((char *)start + len); p++)
 		*p = cpu_to_fdt32(FDT_NOP);
diff --git a/kernel/scripts/dtc/libfdt/libfdt.h b/kernel/scripts/dtc/libfdt/libfdt.h
index 73f49759a..ea35ac3c9 100644
--- a/kernel/scripts/dtc/libfdt/libfdt.h
+++ b/kernel/scripts/dtc/libfdt/libfdt.h
@@ -51,8 +51,8 @@
  *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <libfdt_env.h>
-#include <fdt.h>
+#include "libfdt_env.h"
+#include "fdt.h"
 
 #define FDT_FIRST_SUPPORTED_VERSION	0x10
 #define FDT_LAST_SUPPORTED_VERSION	0x11
@@ -116,7 +116,12 @@
 	 * Should never be returned, if it is, it indicates a bug in
 	 * libfdt itself. */
 
-#define FDT_ERR_MAX		13
+/* Errors in device tree content */
+#define FDT_ERR_BADNCELLS	14
+	/* FDT_ERR_BADNCELLS: Device tree has a #address-cells, #size-cells
+	 * or similar property with a bad format or value */
+
+#define FDT_ERR_MAX		14
 
 /**********************************************************************/
 /* Low-level functions (you probably don't need these)                */
@@ -136,6 +141,28 @@ uint32_t fdt_next_tag(const void *fdt, int offset, int *nextoffset);
 
 int fdt_next_node(const void *fdt, int offset, int *depth);
 
+/**
+ * fdt_first_subnode() - get offset of first direct subnode
+ *
+ * @fdt:	FDT blob
+ * @offset:	Offset of node to check
+ * @return offset of first subnode, or -FDT_ERR_NOTFOUND if there is none
+ */
+int fdt_first_subnode(const void *fdt, int offset);
+
+/**
+ * fdt_next_subnode() - get offset of next direct subnode
+ *
+ * After first calling fdt_first_subnode(), call this function repeatedly to
+ * get direct subnodes of a parent node.
+ *
+ * @fdt:	FDT blob
+ * @offset:	Offset of previous subnode
+ * @return offset of next subnode, or -FDT_ERR_NOTFOUND if there are no more
+ * subnodes
+ */
+int fdt_next_subnode(const void *fdt, int offset);
+
 /**********************************************************************/
 /* General functions                                                  */
 /**********************************************************************/
@@ -296,6 +323,17 @@ int fdt_subnode_offset_namelen(const void *fdt, int parentoffset,
 int fdt_subnode_offset(const void *fdt, int parentoffset, const char *name);
 
 /**
+ * fdt_path_offset_namelen - find a tree node by its full path
+ * @fdt: pointer to the device tree blob
+ * @path: full path of the node to locate
+ * @namelen: number of characters of path to consider
+ *
+ * Identical to fdt_path_offset(), but only consider the first namelen
+ * characters of path as the path name.
+ */
+int fdt_path_offset_namelen(const void *fdt, const char *path, int namelen);
+
+/**
  * fdt_path_offset - find a tree node by its full path
  * @fdt: pointer to the device tree blob
  * @path: full path of the node to locate
@@ -582,7 +620,7 @@ const char *fdt_get_alias_namelen(const void *fdt,
  * value of the property named 'name' in the node /aliases.
  *
  * returns:
- *	a pointer to the expansion of the alias named 'name', of it exists
+ *	a pointer to the expansion of the alias named 'name', if it exists
  *	NULL, if the given alias or the /aliases node does not exist
  */
 const char *fdt_get_alias(const void *fdt, const char *name);
@@ -816,6 +854,75 @@ int fdt_node_check_compatible(const void *fdt, int nodeoffset,
 int fdt_node_offset_by_compatible(const void *fdt, int startoffset,
 				  const char *compatible);
 
+/**
+ * fdt_stringlist_contains - check a string list property for a string
+ * @strlist: Property containing a list of strings to check
+ * @listlen: Length of property
+ * @str: String to search for
+ *
+ * This is a utility function provided for convenience. The list contains
+ * one or more strings, each terminated by \0, as is found in a device tree
+ * "compatible" property.
+ *
+ * @return: 1 if the string is found in the list, 0 not found, or invalid list
+ */
+int fdt_stringlist_contains(const char *strlist, int listlen, const char *str);
+
+/**********************************************************************/
+/* Read-only functions (addressing related)                           */
+/**********************************************************************/
+
+/**
+ * FDT_MAX_NCELLS - maximum value for #address-cells and #size-cells
+ *
+ * This is the maximum value for #address-cells, #size-cells and
+ * similar properties that will be processed by libfdt.  IEE1275
+ * requires that OF implementations handle values up to 4.
+ * Implementations may support larger values, but in practice higher
+ * values aren't used.
+ */
+#define FDT_MAX_NCELLS		4
+
+/**
+ * fdt_address_cells - retrieve address size for a bus represented in the tree
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node to find the address size for
+ *
+ * When the node has a valid #address-cells property, returns its value.
+ *
+ * returns:
+ *	0 <= n < FDT_MAX_NCELLS, on success
+ *      2, if the node has no #address-cells property
+ *      -FDT_ERR_BADNCELLS, if the node has a badly formatted or invalid #address-cells property
+ *	-FDT_ERR_BADMAGIC,
+ *	-FDT_ERR_BADVERSION,
+ *	-FDT_ERR_BADSTATE,
+ *	-FDT_ERR_BADSTRUCTURE,
+ *	-FDT_ERR_TRUNCATED, standard meanings
+ */
+int fdt_address_cells(const void *fdt, int nodeoffset);
+
+/**
+ * fdt_size_cells - retrieve address range size for a bus represented in the
+ *                  tree
+ * @fdt: pointer to the device tree blob
+ * @nodeoffset: offset of the node to find the address range size for
+ *
+ * When the node has a valid #size-cells property, returns its value.
+ *
+ * returns:
+ *	0 <= n < FDT_MAX_NCELLS, on success
+ *      2, if the node has no #address-cells property
+ *      -FDT_ERR_BADNCELLS, if the node has a badly formatted or invalid #size-cells property
+ *	-FDT_ERR_BADMAGIC,
+ *	-FDT_ERR_BADVERSION,
+ *	-FDT_ERR_BADSTATE,
+ *	-FDT_ERR_BADSTRUCTURE,
+ *	-FDT_ERR_TRUNCATED, standard meanings
+ */
+int fdt_size_cells(const void *fdt, int nodeoffset);
+
+
 /**********************************************************************/
 /* Write-in-place functions                                           */
 /**********************************************************************/
@@ -882,8 +989,8 @@ int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
 static inline int fdt_setprop_inplace_u32(void *fdt, int nodeoffset,
 					  const char *name, uint32_t val)
 {
-	val = cpu_to_fdt32(val);
-	return fdt_setprop_inplace(fdt, nodeoffset, name, &val, sizeof(val));
+	fdt32_t tmp = cpu_to_fdt32(val);
+	return fdt_setprop_inplace(fdt, nodeoffset, name, &tmp, sizeof(tmp));
 }
 
 /**
@@ -917,8 +1024,8 @@ static inline int fdt_setprop_inplace_u32(void *fdt, int nodeoffset,
 static inline int fdt_setprop_inplace_u64(void *fdt, int nodeoffset,
 					  const char *name, uint64_t val)
 {
-	val = cpu_to_fdt64(val);
-	return fdt_setprop_inplace(fdt, nodeoffset, name, &val, sizeof(val));
+	fdt64_t tmp = cpu_to_fdt64(val);
+	return fdt_setprop_inplace(fdt, nodeoffset, name, &tmp, sizeof(tmp));
 }
 
 /**
@@ -987,19 +1094,20 @@ int fdt_nop_node(void *fdt, int nodeoffset);
 /**********************************************************************/
 
 int fdt_create(void *buf, int bufsize);
+int fdt_resize(void *fdt, void *buf, int bufsize);
 int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size);
 int fdt_finish_reservemap(void *fdt);
 int fdt_begin_node(void *fdt, const char *name);
 int fdt_property(void *fdt, const char *name, const void *val, int len);
 static inline int fdt_property_u32(void *fdt, const char *name, uint32_t val)
 {
-	val = cpu_to_fdt32(val);
-	return fdt_property(fdt, name, &val, sizeof(val));
+	fdt32_t tmp = cpu_to_fdt32(val);
+	return fdt_property(fdt, name, &tmp, sizeof(tmp));
 }
 static inline int fdt_property_u64(void *fdt, const char *name, uint64_t val)
 {
-	val = cpu_to_fdt64(val);
-	return fdt_property(fdt, name, &val, sizeof(val));
+	fdt64_t tmp = cpu_to_fdt64(val);
+	return fdt_property(fdt, name, &tmp, sizeof(tmp));
 }
 static inline int fdt_property_cell(void *fdt, const char *name, uint32_t val)
 {
@@ -1154,8 +1262,8 @@ int fdt_setprop(void *fdt, int nodeoffset, const char *name,
 static inline int fdt_setprop_u32(void *fdt, int nodeoffset, const char *name,
 				  uint32_t val)
 {
-	val = cpu_to_fdt32(val);
-	return fdt_setprop(fdt, nodeoffset, name, &val, sizeof(val));
+	fdt32_t tmp = cpu_to_fdt32(val);
+	return fdt_setprop(fdt, nodeoffset, name, &tmp, sizeof(tmp));
 }
 
 /**
@@ -1189,8 +1297,8 @@ static inline int fdt_setprop_u32(void *fdt, int nodeoffset, const char *name,
 static inline int fdt_setprop_u64(void *fdt, int nodeoffset, const char *name,
 				  uint64_t val)
 {
-	val = cpu_to_fdt64(val);
-	return fdt_setprop(fdt, nodeoffset, name, &val, sizeof(val));
+	fdt64_t tmp = cpu_to_fdt64(val);
+	return fdt_setprop(fdt, nodeoffset, name, &tmp, sizeof(tmp));
 }
 
 /**
@@ -1296,8 +1404,8 @@ int fdt_appendprop(void *fdt, int nodeoffset, const char *name,
 static inline int fdt_appendprop_u32(void *fdt, int nodeoffset,
 				     const char *name, uint32_t val)
 {
-	val = cpu_to_fdt32(val);
-	return fdt_appendprop(fdt, nodeoffset, name, &val, sizeof(val));
+	fdt32_t tmp = cpu_to_fdt32(val);
+	return fdt_appendprop(fdt, nodeoffset, name, &tmp, sizeof(tmp));
 }
 
 /**
@@ -1331,8 +1439,8 @@ static inline int fdt_appendprop_u32(void *fdt, int nodeoffset,
 static inline int fdt_appendprop_u64(void *fdt, int nodeoffset,
 				     const char *name, uint64_t val)
 {
-	val = cpu_to_fdt64(val);
-	return fdt_appendprop(fdt, nodeoffset, name, &val, sizeof(val));
+	fdt64_t tmp = cpu_to_fdt64(val);
+	return fdt_appendprop(fdt, nodeoffset, name, &tmp, sizeof(tmp));
 }
 
 /**
diff --git a/kernel/scripts/dtc/libfdt/libfdt_env.h b/kernel/scripts/dtc/libfdt/libfdt_env.h
index 213d7fb81..9dea97dff 100644
--- a/kernel/scripts/dtc/libfdt/libfdt_env.h
+++ b/kernel/scripts/dtc/libfdt/libfdt_env.h
@@ -1,29 +1,111 @@
 #ifndef _LIBFDT_ENV_H
 #define _LIBFDT_ENV_H
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ * Copyright 2012 Kim Phillips, Freescale Semiconductor.
+ *
+ * libfdt is dual licensed: you can use it either under the terms of
+ * the GPL, or the BSD license, at your option.
+ *
+ *  a) This library 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 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 General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public
+ *     License along with this library; if not, write to the Free
+ *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ *     MA 02110-1301 USA
+ *
+ * Alternatively,
+ *
+ *  b) Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *     1. Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *     2. 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 <stddef.h>
 #include <stdint.h>
 #include <string.h>
 
-#define EXTRACT_BYTE(n)	((unsigned long long)((uint8_t *)&x)[n])
-static inline uint16_t fdt16_to_cpu(uint16_t x)
+#ifdef __CHECKER__
+#define __force __attribute__((force))
+#define __bitwise __attribute__((bitwise))
+#else
+#define __force
+#define __bitwise
+#endif
+
+typedef uint16_t __bitwise fdt16_t;
+typedef uint32_t __bitwise fdt32_t;
+typedef uint64_t __bitwise fdt64_t;
+
+#define EXTRACT_BYTE(x, n)	((unsigned long long)((uint8_t *)&x)[n])
+#define CPU_TO_FDT16(x) ((EXTRACT_BYTE(x, 0) << 8) | EXTRACT_BYTE(x, 1))
+#define CPU_TO_FDT32(x) ((EXTRACT_BYTE(x, 0) << 24) | (EXTRACT_BYTE(x, 1) << 16) | \
+			 (EXTRACT_BYTE(x, 2) << 8) | EXTRACT_BYTE(x, 3))
+#define CPU_TO_FDT64(x) ((EXTRACT_BYTE(x, 0) << 56) | (EXTRACT_BYTE(x, 1) << 48) | \
+			 (EXTRACT_BYTE(x, 2) << 40) | (EXTRACT_BYTE(x, 3) << 32) | \
+			 (EXTRACT_BYTE(x, 4) << 24) | (EXTRACT_BYTE(x, 5) << 16) | \
+			 (EXTRACT_BYTE(x, 6) << 8) | EXTRACT_BYTE(x, 7))
+
+static inline uint16_t fdt16_to_cpu(fdt16_t x)
+{
+	return (__force uint16_t)CPU_TO_FDT16(x);
+}
+static inline fdt16_t cpu_to_fdt16(uint16_t x)
 {
-	return (EXTRACT_BYTE(0) << 8) | EXTRACT_BYTE(1);
+	return (__force fdt16_t)CPU_TO_FDT16(x);
 }
-#define cpu_to_fdt16(x) fdt16_to_cpu(x)
 
-static inline uint32_t fdt32_to_cpu(uint32_t x)
+static inline uint32_t fdt32_to_cpu(fdt32_t x)
 {
-	return (EXTRACT_BYTE(0) << 24) | (EXTRACT_BYTE(1) << 16) | (EXTRACT_BYTE(2) << 8) | EXTRACT_BYTE(3);
+	return (__force uint32_t)CPU_TO_FDT32(x);
+}
+static inline fdt32_t cpu_to_fdt32(uint32_t x)
+{
+	return (__force fdt32_t)CPU_TO_FDT32(x);
 }
-#define cpu_to_fdt32(x) fdt32_to_cpu(x)
 
-static inline uint64_t fdt64_to_cpu(uint64_t x)
+static inline uint64_t fdt64_to_cpu(fdt64_t x)
+{
+	return (__force uint64_t)CPU_TO_FDT64(x);
+}
+static inline fdt64_t cpu_to_fdt64(uint64_t x)
 {
-	return (EXTRACT_BYTE(0) << 56) | (EXTRACT_BYTE(1) << 48) | (EXTRACT_BYTE(2) << 40) | (EXTRACT_BYTE(3) << 32)
-		| (EXTRACT_BYTE(4) << 24) | (EXTRACT_BYTE(5) << 16) | (EXTRACT_BYTE(6) << 8) | EXTRACT_BYTE(7);
+	return (__force fdt64_t)CPU_TO_FDT64(x);
 }
-#define cpu_to_fdt64(x) fdt64_to_cpu(x)
+#undef CPU_TO_FDT64
+#undef CPU_TO_FDT32
+#undef CPU_TO_FDT16
 #undef EXTRACT_BYTE
 
 #endif /* _LIBFDT_ENV_H */
diff --git a/kernel/scripts/dtc/libfdt/libfdt_internal.h b/kernel/scripts/dtc/libfdt/libfdt_internal.h
index 381133ba8..02cfa6fb6 100644
--- a/kernel/scripts/dtc/libfdt/libfdt_internal.h
+++ b/kernel/scripts/dtc/libfdt/libfdt_internal.h
@@ -57,9 +57,9 @@
 
 #define FDT_CHECK_HEADER(fdt) \
 	{ \
-		int err; \
-		if ((err = fdt_check_header(fdt)) != 0) \
-			return err; \
+		int __err; \
+		if ((__err = fdt_check_header(fdt)) != 0) \
+			return __err; \
 	}
 
 int _fdt_check_node_offset(const void *fdt, int offset);