Merge with /home/wd/git/u-boot/custodian/u-boot-fdt

14 files changed, 770 insertions, 343 deletions

diff --git a/board/mpc8360emds/mpc8360emds.c b/board/mpc8360emds/mpc8360emds.c
index deadb5f..5cabe47 100644
--- a/board/mpc8360emds/mpc8360emds.c
+++ b/board/mpc8360emds/mpc8360emds.c
@@ -664,19 +664,28 @@ U_BOOT_CMD(ecc, 4, 0, do_ecc,
 
 #if (defined(CONFIG_OF_FLAT_TREE) || defined(CONFIG_OF_LIBFDT)) \
      && defined(CONFIG_OF_BOARD_SETUP)
+
+/*
+ * Prototypes of functions that we use.
+ */
+void ft_cpu_setup(void *blob, bd_t *bd);
+
+#ifdef CONFIG_PCI
+void ft_pci_setup(void *blob, bd_t *bd);
+#endif
+
 void
 ft_board_setup(void *blob, bd_t *bd)
 {
 #if defined(CONFIG_OF_LIBFDT)
 	int nodeoffset;
-	int err;
 	int tmp[2];
 
 	nodeoffset = fdt_path_offset (fdt, "/memory");
 	if (nodeoffset >= 0) {
 		tmp[0] = cpu_to_be32(bd->bi_memstart);
 		tmp[1] = cpu_to_be32(bd->bi_memsize);
-		err = fdt_setprop(fdt, nodeoffset, "reg", tmp, sizeof(tmp));
+		fdt_setprop(fdt, nodeoffset, "reg", tmp, sizeof(tmp));
 	}
 #else
 	u32 *p;
@@ -694,4 +703,5 @@ ft_board_setup(void *blob, bd_t *bd)
 #endif
 	ft_cpu_setup(blob, bd);
 }
-#endif
+#endif /* CONFIG_OF_x */
+
diff --git a/common/Makefile b/common/Makefile
index 74a6af2..5dfd3a8 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -45,7 +45,7 @@ COBJS	= main.o ACEX1K.o altera.o bedbug.o circbuf.o cmd_autoscript.o \
 	  env_nand.o env_dataflash.o env_flash.o env_eeprom.o \
 	  env_nvram.o env_nowhere.o \
 	  exports.o \
-	  flash.o fpga.o ft_build.o \
+	  fdt_support.o flash.o fpga.o ft_build.o \
 	  hush.o kgdb.o lcd.o lists.o lynxkdi.o \
 	  memsize.o miiphybb.o miiphyutil.o \
 	  s_record.o serial.o soft_i2c.o soft_spi.o spartan2.o spartan3.o \
diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c
index 2721216b..32c29e5 100644
--- a/common/cmd_bootm.c
+++ b/common/cmd_bootm.c
@@ -37,6 +37,7 @@
 #if defined(CONFIG_OF_LIBFDT)
 #include <fdt.h>
 #include <libfdt.h>
+#include <fdt_support.h>
 #endif
 #if defined(CONFIG_OF_FLAT_TREE)
 #include <ft_build.h>
@@ -748,7 +749,7 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
 		of_flat_tree = (char *) simple_strtoul(argv[3], NULL, 16);
 		hdr = (image_header_t *)of_flat_tree;
 #if defined(CONFIG_OF_LIBFDT)
-		if (be32_to_cpu(fdt_magic(of_flat_tree)) == FDT_MAGIC) {
+		if (fdt_check_header(of_flat_tree) == 0) {
 #else
 		if (*(ulong *)of_flat_tree == OF_DT_HEADER) {
 #endif
@@ -795,7 +796,7 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
 				return;
 			}
 #if defined(CONFIG_OF_LIBFDT)
-			if (be32_to_cpu(fdt_magic(of_flat_tree + sizeof(image_header_t))) != FDT_MAGIC) {
+			if (fdt_check_header(of_flat_tree + sizeof(image_header_t)) == 0) {
 #else
 			if (*((ulong *)(of_flat_tree + sizeof(image_header_t))) != OF_DT_HEADER) {
 #endif
@@ -836,7 +837,7 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
 		}
 
 #if defined(CONFIG_OF_LIBFDT)
-		if (be32_to_cpu(fdt_magic(of_data)) != FDT_MAGIC) {
+		if (fdt_check_header((void *)of_data) != 0) {
 #else
 		if (((struct boot_param_header *)of_data)->magic != OF_DT_HEADER) {
 #endif
@@ -937,23 +938,44 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
 	if (of_data) {
 		int err;
 		ulong of_start, of_len;
+
 		of_len = be32_to_cpu(fdt_totalsize(of_data));
-		/* provide extra 8k pad */
+		/* position on a 4K boundary before the initrd/kbd */
 		if (initrd_start)
-			of_start = initrd_start - of_len - 8192;
+			of_start = initrd_start - of_len;
 		else
-			of_start  = (ulong)kbd - of_len - 8192;
+			of_start  = (ulong)kbd - of_len;
 		of_start &= ~(4096 - 1);	/* align on page */
 		debug ("## device tree at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n",
 			of_data, of_data + of_len - 1, of_len, of_len);
 
-
+		of_flat_tree = (char *)of_start;
 		printf ("   Loading Device Tree to %08lx, end %08lx ... ",
 			of_start, of_start + of_len - 1);
-		err = fdt_open_into(of_start, of_data, of_len);
+		err = fdt_open_into((void *)of_start, (void *)of_data, of_len);
 		if (err != 0) {
-			printf ("libfdt: %s\n", fdt_strerror(err));
+			printf ("libfdt: %s " __FILE__ " %d\n", fdt_strerror(err), __LINE__);
 		}
+		/*
+		 * Add the chosen node if it doesn't exist, add the env and bd_t
+		 * if the user wants it (the logic is in the subroutines).
+		 */
+		if (fdt_chosen(of_flat_tree, initrd_start, initrd_end, 0) < 0) {
+				printf("Failed creating the /chosen node (0x%08X), aborting.\n", of_flat_tree);
+				return;
+		}
+#ifdef CONFIG_OF_HAS_UBOOT_ENV
+		if (fdt_env(of_flat_tree) < 0) {
+				printf("Failed creating the /u-boot-env node, aborting.\n");
+				return;
+		}
+#endif
+#ifdef CONFIG_OF_HAS_BD_T
+		if (fdt_bd_t(of_flat_tree) < 0) {
+				printf("Failed creating the /bd_t node, aborting.\n");
+				return;
+		}
+#endif
 	}
 #endif
 #if defined(CONFIG_OF_FLAT_TREE)
@@ -1004,6 +1026,24 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag,
 	ft_setup(of_flat_tree, kbd, initrd_start, initrd_end);
 	/* ft_dump_blob(of_flat_tree); */
 #endif
+#if defined(CONFIG_OF_LIBFDT)
+	if (fdt_chosen(of_flat_tree, initrd_start, initrd_end, 0) < 0) {
+		printf("Failed creating the /chosen node (0x%08X), aborting.\n", of_flat_tree);
+		return;
+	}
+#ifdef CONFIG_OF_HAS_UBOOT_ENV
+	if (fdt_env(of_flat_tree) < 0) {
+		printf("Failed creating the /u-boot-env node, aborting.\n");
+		return;
+	}
+#endif
+#ifdef CONFIG_OF_HAS_BD_T
+	if (fdt_bd_t(of_flat_tree) < 0) {
+		printf("Failed creating the /bd_t node, aborting.\n");
+		return;
+	}
+#endif
+#endif /* if defined(CONFIG_OF_LIBFDT) */
 
 	(*kernel) ((bd_t *)of_flat_tree, (ulong)kernel, 0, 0, 0);
 #endif
diff --git a/common/cmd_fdt.c b/common/cmd_fdt.c
index 968bade..08fe351 100644
--- a/common/cmd_fdt.c
+++ b/common/cmd_fdt.c
@@ -30,9 +30,11 @@
 #include <linux/types.h>
 
 #ifdef CONFIG_OF_LIBFDT
+
 #include <asm/global_data.h>
 #include <fdt.h>
 #include <libfdt.h>
+#include <fdt_support.h>
 
 #define MAX_LEVEL	32		/* how deeply nested we will go */
 #define SCRATCHPAD	1024	/* bytes of scratchpad memory */
@@ -53,9 +55,6 @@ static char data[SCRATCHPAD];
  */
 static int fdt_valid(void);
 static void print_data(const void *data, int len);
-static int fdt_chosen(void *fdt, ulong initrd_start, ulong initrd_end);
-static int fdt_env(void *fdt);
-static int fdt_bd_t(void *fdt);
 
 
 /*
@@ -437,7 +436,7 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 	 * Create a chosen node
 	 ********************************************************************/
 	} else if (op == 'c') {
-		fdt_chosen(fdt, 0, 0);
+		fdt_chosen(fdt, 0, 0, 1);
 
 	/********************************************************************
 	 * Create a u-boot-env node
@@ -466,25 +465,36 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 
 static int fdt_valid(void)
 {
+	int  err;
+
 	if (fdt == NULL) {
-		printf ("The address of the fdt is invalid.\n");
-		return 0;
-	}
-	if (!fdt || (fdt_magic(fdt) != FDT_MAGIC)) {
-		fdt = NULL;
-		printf ("Unrecognized fdt: bad magic\n");
-		return 0;
-	}
-	if (fdt_version(fdt) < FDT_FIRST_SUPPORTED_VERSION) {
-		printf ("Unsupported fdt version: $d < %d\n",
-			FDT_FIRST_SUPPORTED_VERSION, fdt_version(fdt));
-		fdt = NULL;
+		printf ("The address of the fdt is invalid (NULL).\n");
 		return 0;
 	}
-	if (fdt_last_comp_version(fdt) > FDT_LAST_SUPPORTED_VERSION) {
-		printf ("Unsupported fdt version: $d > %d\n",
-			fdt_version(fdt), FDT_LAST_SUPPORTED_VERSION);
-		fdt = NULL;
+
+	err = fdt_check_header(fdt);
+	if (err == 0)
+		return 1;	/* valid */
+
+	if (err < 0) {
+		printf("libfdt: %s", fdt_strerror(err));
+		/*
+		 * Be more informative on bad version.
+		 */
+		if (err == -FDT_ERR_BADVERSION) {
+			if (fdt_version(fdt) < FDT_FIRST_SUPPORTED_VERSION) {
+				printf (" - too old, fdt $d < %d",
+					fdt_version(fdt), FDT_FIRST_SUPPORTED_VERSION);
+				fdt = NULL;
+			}
+			if (fdt_last_comp_version(fdt) > FDT_LAST_SUPPORTED_VERSION) {
+				printf (" - too new, fdt $d > %d",
+					fdt_version(fdt), FDT_LAST_SUPPORTED_VERSION);
+				fdt = NULL;
+			}
+			return 0;
+		}
+		printf("\n");
 		return 0;
 	}
 	return 1;
@@ -593,255 +603,6 @@ static void print_data(const void *data, int len)
 
 /********************************************************************/
 
-static int fdt_chosen(void *fdt, ulong initrd_start, ulong initrd_end)
-{
-	bd_t *bd = gd->bd;
-	int   nodeoffset;
-	int   err;
-	u32   tmp;			/* used to set 32 bit integer properties */
-	char  *str;			/* used to set string properties */
-	ulong clock;
-
-	if (initrd_start && initrd_end) {
-		err = fdt_add_reservemap_entry(fdt,
-			initrd_start, initrd_end - initrd_start + 1);
-		if (err < 0) {
-			printf("libfdt: %s\n", fdt_strerror(err));
-			return err;
-		}
-	}
-
-	/*
-	 * See if we already have a "chosen" node, create it if not.
-	 */
-	nodeoffset = fdt_path_offset (fdt, "/chosen");
-	if (nodeoffset < 0) {
-		/*
-		 * Create a new node "/chosen" (offset 0 is root level)
-		 */
-		nodeoffset = fdt_add_subnode(fdt, 0, "chosen");
-		if (nodeoffset < 0) {
-			printf("libfdt: %s\n", fdt_strerror(nodeoffset));
-			return nodeoffset;
-		}
-	}
-
-	str = getenv("bootargs");
-	if (str != NULL) {
-		err = fdt_setprop(fdt, nodeoffset, "bootargs", str, strlen(str)+1);
-		if (err < 0)
-			printf("libfdt: %s\n", fdt_strerror(err));
-	}
-	if (initrd_start && initrd_end) {
-		tmp = __cpu_to_be32(initrd_start);
-		err = fdt_setprop(fdt, nodeoffset, "linux,initrd-start", &tmp, sizeof(tmp));
-		if (err < 0)
-			printf("libfdt: %s\n", fdt_strerror(err));
-		tmp = __cpu_to_be32(initrd_end);
-		err = fdt_setprop(fdt, nodeoffset, "linux,initrd-end", &tmp, sizeof(tmp));
-		if (err < 0)
-			printf("libfdt: %s\n", fdt_strerror(err));
-	}
-#ifdef OF_STDOUT_PATH
-	err = fdt_setprop(fdt, nodeoffset, "linux,stdout-path", OF_STDOUT_PATH, strlen(OF_STDOUT_PATH)+1);
-	if (err < 0)
-		printf("libfdt: %s\n", fdt_strerror(err));
-#endif
-
-	nodeoffset = fdt_path_offset (fdt, "/cpus");
-	if (nodeoffset >= 0) {
-		clock = cpu_to_be32(bd->bi_intfreq);
-		err = fdt_setprop(fdt, nodeoffset, "clock-frequency", &clock, 4);
-		if (err < 0)
-			printf("libfdt: %s\n", fdt_strerror(err));
-	}
-#ifdef OF_TBCLK
-	nodeoffset = fdt_path_offset (fdt, "/cpus/" OF_CPU "/timebase-frequency");
-	if (nodeoffset >= 0) {
-		clock = cpu_to_be32(OF_TBCLK);
-		err = fdt_setprop(fdt, nodeoffset, "clock-frequency", &clock, 4);
-		if (err < 0)
-			printf("libfdt: %s\n", fdt_strerror(err));
-	}
-#endif
-}
-
-/********************************************************************/
-
-#ifdef CONFIG_OF_HAS_BD_T
-
-/* Function that returns a character from the environment */
-extern uchar(*env_get_char) (int);
-
-#define BDM(x)	{	.name = #x, .offset = offsetof(bd_t, bi_ ##x ) }
-
-static const struct {
-	const char *name;
-	int offset;
-} bd_map[] = {
-	BDM(memstart),
-	BDM(memsize),
-	BDM(flashstart),
-	BDM(flashsize),
-	BDM(flashoffset),
-	BDM(sramstart),
-	BDM(sramsize),
-#if defined(CONFIG_5xx) || defined(CONFIG_8xx) || defined(CONFIG_8260) \
-	|| defined(CONFIG_E500)
-	BDM(immr_base),
-#endif
-#if defined(CONFIG_MPC5xxx)
-	BDM(mbar_base),
-#endif
-#if defined(CONFIG_MPC83XX)
-	BDM(immrbar),
-#endif
-#if defined(CONFIG_MPC8220)
-	BDM(mbar_base),
-	BDM(inpfreq),
-	BDM(pcifreq),
-	BDM(pevfreq),
-	BDM(flbfreq),
-	BDM(vcofreq),
-#endif
-	BDM(bootflags),
-	BDM(ip_addr),
-	BDM(intfreq),
-	BDM(busfreq),
-#ifdef CONFIG_CPM2
-	BDM(cpmfreq),
-	BDM(brgfreq),
-	BDM(sccfreq),
-	BDM(vco),
-#endif
-#if defined(CONFIG_MPC5xxx)
-	BDM(ipbfreq),
-	BDM(pcifreq),
-#endif
-	BDM(baudrate),
-};
-
-static int fdt_env(void *fdt)
-{
-	int   nodeoffset;
-	int   err;
-	int   k, nxt;
-	int i;
-	static char tmpenv[256];
-
-	/*
-	 * See if we already have a "u-boot-env" node, delete it if so.
-	 * Then create a new empty node.
-	 */
-	nodeoffset = fdt_path_offset (fdt, "/u-boot-env");
-	if (nodeoffset >= 0) {
-		err = fdt_del_node(fdt, nodeoffset);
-		if (err < 0) {
-			printf("libfdt: %s\n", fdt_strerror(err));
-			return err;
-		}
-	}
-	/*
-	 * Create a new node "/u-boot-env" (offset 0 is root level)
-	 */
-	nodeoffset = fdt_add_subnode(fdt, 0, "u-boot-env");
-	if (nodeoffset < 0) {
-		printf("libfdt: %s\n", fdt_strerror(nodeoffset));
-		return nodeoffset;
-	}
-
-	for (i = 0; env_get_char(i) != '\0'; i = nxt + 1) {
-		char *s, *lval, *rval;
-
-		/*
-		 * Find the end of the name=definition
-		 */
-		for (nxt = i; env_get_char(nxt) != '\0'; ++nxt)
-			;
-		s = tmpenv;
-		for (k = i; k < nxt && s < &tmpenv[sizeof(tmpenv) - 1]; ++k)
-			*s++ = env_get_char(k);
-		*s++ = '\0';
-		lval = tmpenv;
-		/*
-		 * Find the first '=': it separates the name from the value
-		 */
-		s = strchr(tmpenv, '=');
-		if (s != NULL) {
-			*s++ = '\0';
-			rval = s;
-		} else
-			continue;
-		err = fdt_setprop(fdt, nodeoffset, lval, rval, strlen(rval)+1);
-		if (err < 0) {
-			printf("\"%s\" - libfdt: %s\n", lval, fdt_strerror(err));
-			return err;
-		}
-	}
-	return 0;
-}
-#endif /* CONFIG_OF_HAS_UBOOT_ENV */
-
-/********************************************************************/
-
-#ifdef CONFIG_OF_HAS_BD_T
-static int fdt_bd_t(void *fdt)
-{
-	bd_t *bd = gd->bd;
-	int   nodeoffset;
-	int   err;
-	u32   tmp;			/* used to set 32 bit integer properties */
-	int i;
-
-	/*
-	 * See if we already have a "bd_t" node, delete it if so.
-	 * Then create a new empty node.
-	 */
-	nodeoffset = fdt_path_offset (fdt, "/bd_t");
-	if (nodeoffset >= 0) {
-		err = fdt_del_node(fdt, nodeoffset);
-		if (err < 0) {
-			printf("libfdt: %s\n", fdt_strerror(err));
-			return err;
-		}
-	}
-	/*
-	 * Create a new node "/bd_t" (offset 0 is root level)
-	 */
-	nodeoffset = fdt_add_subnode(fdt, 0, "bd_t");
-	if (nodeoffset < 0) {
-		printf("libfdt: %s\n", fdt_strerror(nodeoffset));
-		return nodeoffset;
-	}
-	/*
-	 * Use the string/pointer structure to create the entries...
-	 */
-	for (i = 0; i < sizeof(bd_map)/sizeof(bd_map[0]); i++) {
-		tmp = cpu_to_be32(getenv("bootargs"));
-		err = fdt_setprop(fdt, nodeoffset, bd_map[i].name, &tmp, sizeof(tmp));
-		if (err < 0)
-			printf("libfdt: %s\n", fdt_strerror(err));
-	}
-	/*
-	 * Add a couple of oddball entries...
-	 */
-	err = fdt_setprop(fdt, nodeoffset, "enetaddr", &bd->bi_enetaddr, 6);
-	if (err < 0)
-		printf("libfdt: %s\n", fdt_strerror(err));
-	err = fdt_setprop(fdt, nodeoffset, "ethspeed", &bd->bi_ethspeed, 4);
-	if (err < 0)
-		printf("libfdt: %s\n", fdt_strerror(err));
-
-#ifdef CONFIG_OF_BOARD_SETUP
-	ft_board_setup(fdt, bd);
-#endif
-
-	return 0;
-}
-#endif /* CONFIG_OF_HAS_BD_T */
-
-/********************************************************************/
-
 U_BOOT_CMD(
 	fdt,	5,	0,	do_fdt,
 	"fdt     - flattened device tree utility commands\n",
@@ -871,4 +632,4 @@ U_BOOT_CMD(
 	"          fdt set   /cpus \"#address-cells\" \"[00 00 00 01]\"\n"
 );
 
-#endif /* CONFIG_OF_FLAT_TREE */
+#endif /* CONFIG_OF_LIBFDT */
diff --git a/common/fdt_support.c b/common/fdt_support.c
new file mode 100644
index 0000000..91b729f
--- /dev/null
+++ b/common/fdt_support.c
@@ -0,0 +1,347 @@
+/*
+ * (C) Copyright 2007
+ * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program 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 program 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 program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <linux/ctype.h>
+#include <linux/types.h>
+
+#ifdef CONFIG_OF_LIBFDT
+
+#include <asm/global_data.h>
+#include <fdt.h>
+#include <libfdt.h>
+#include <fdt_support.h>
+
+/*
+ * Global data (for the gd->bd)
+ */
+DECLARE_GLOBAL_DATA_PTR;
+
+
+/********************************************************************/
+
+int fdt_chosen(void *fdt, ulong initrd_start, ulong initrd_end, int force)
+{
+	bd_t *bd = gd->bd;
+	int   nodeoffset;
+	int   err;
+	u32   tmp;			/* used to set 32 bit integer properties */
+	char  *str;			/* used to set string properties */
+	ulong clock;
+
+	err = fdt_check_header(fdt);
+	if (err < 0) {
+		printf("libfdt: %s\n", fdt_strerror(err));
+		return err;
+	}
+
+	if (initrd_start && initrd_end) {
+		struct fdt_reserve_entry *re;
+		int  used;
+		int  total;
+		int  j;
+
+		err = fdt_num_reservemap(fdt, &used, &total);
+		if (err < 0) {
+			printf("libfdt: %s\n", fdt_strerror(err));
+			return err;
+		}
+		if (used >= total) {
+			printf("fdt_chosen: no room in the reserved map (%d of %d)\n",
+				used, total);
+			return -1;
+		}
+		/*
+		 * Look for an existing entry and update it.  If we don't find
+		 * the entry, we will j be the next available slot.
+		 */
+		for (j = 0; j < used; j++) {
+			err = fdt_get_reservemap(fdt, j, &re);
+			if (re->address == initrd_start) {
+				break;
+			}
+		}
+		err = fdt_replace_reservemap_entry(fdt, j,
+			initrd_start, initrd_end - initrd_start + 1);
+		if (err < 0) {
+			printf("libfdt: %s\n", fdt_strerror(err));
+			return err;
+		}
+	}
+
+	/*
+	 * Find the "chosen" node.
+	 */
+	nodeoffset = fdt_path_offset (fdt, "/chosen");
+
+	/*
+	 * If we have a "chosen" node already the "force the writing"
+	 * is not set, our job is done.
+	 */
+	if ((nodeoffset >= 0) && !force)
+		return 0;
+
+	/*
+	 * No "chosen" node in the blob: create it.
+	 */
+	if (nodeoffset < 0) {
+		/*
+		 * Create a new node "/chosen" (offset 0 is root level)
+		 */
+		nodeoffset = fdt_add_subnode(fdt, 0, "chosen");
+		if (nodeoffset < 0) {
+			printf("libfdt: %s\n", fdt_strerror(nodeoffset));
+			return nodeoffset;
+		}
+	}
+
+	/*
+	 * Update pre-existing properties, create them if non-existant.
+	 */
+	str = getenv("bootargs");
+	if (str != NULL) {
+		err = fdt_setprop(fdt, nodeoffset, "bootargs", str, strlen(str)+1);
+		if (err < 0)
+			printf("libfdt: %s\n", fdt_strerror(err));
+	}
+	if (initrd_start && initrd_end) {
+		tmp = __cpu_to_be32(initrd_start);
+		err = fdt_setprop(fdt, nodeoffset, "linux,initrd-start", &tmp, sizeof(tmp));
+		if (err < 0)
+			printf("libfdt: %s\n", fdt_strerror(err));
+		tmp = __cpu_to_be32(initrd_end);
+		err = fdt_setprop(fdt, nodeoffset, "linux,initrd-end", &tmp, sizeof(tmp));
+		if (err < 0)
+			printf("libfdt: %s\n", fdt_strerror(err));
+	}
+#ifdef OF_STDOUT_PATH
+	err = fdt_setprop(fdt, nodeoffset, "linux,stdout-path", OF_STDOUT_PATH, strlen(OF_STDOUT_PATH)+1);
+	if (err < 0)
+		printf("libfdt: %s\n", fdt_strerror(err));
+#endif
+
+	nodeoffset = fdt_path_offset (fdt, "/cpus");
+	if (nodeoffset >= 0) {
+		clock = cpu_to_be32(bd->bi_intfreq);
+		err = fdt_setprop(fdt, nodeoffset, "clock-frequency", &clock, 4);
+		if (err < 0)
+			printf("libfdt: %s\n", fdt_strerror(err));
+	}
+#ifdef OF_TBCLK
+	nodeoffset = fdt_path_offset (fdt, "/cpus/" OF_CPU "/timebase-frequency");
+	if (nodeoffset >= 0) {
+		clock = cpu_to_be32(OF_TBCLK);
+		err = fdt_setprop(fdt, nodeoffset, "clock-frequency", &clock, 4);
+		if (err < 0)
+			printf("libfdt: %s\n", fdt_strerror(err));
+	}
+#endif
+	return err;
+}
+
+/********************************************************************/
+
+#ifdef CONFIG_OF_HAS_UBOOT_ENV
+
+/* Function that returns a character from the environment */
+extern uchar(*env_get_char) (int);
+
+
+int fdt_env(void *fdt)
+{
+	int   nodeoffset;
+	int   err;
+	int   k, nxt;
+	int i;
+	static char tmpenv[256];
+
+	err = fdt_check_header(fdt);
+	if (err < 0) {
+		printf("libfdt: %s\n", fdt_strerror(err));
+		return err;
+	}
+
+	/*
+	 * See if we already have a "u-boot-env" node, delete it if so.
+	 * Then create a new empty node.
+	 */
+	nodeoffset = fdt_path_offset (fdt, "/u-boot-env");
+	if (nodeoffset >= 0) {
+		err = fdt_del_node(fdt, nodeoffset);
+		if (err < 0) {
+			printf("libfdt: %s\n", fdt_strerror(err));
+			return err;
+		}
+	}
+	/*
+	 * Create a new node "/u-boot-env" (offset 0 is root level)
+	 */
+	nodeoffset = fdt_add_subnode(fdt, 0, "u-boot-env");
+	if (nodeoffset < 0) {
+		printf("libfdt: %s\n", fdt_strerror(nodeoffset));
+		return nodeoffset;
+	}
+
+	for (i = 0; env_get_char(i) != '\0'; i = nxt + 1) {
+		char *s, *lval, *rval;
+
+		/*
+		 * Find the end of the name=definition
+		 */
+		for (nxt = i; env_get_char(nxt) != '\0'; ++nxt)
+			;
+		s = tmpenv;
+		for (k = i; k < nxt && s < &tmpenv[sizeof(tmpenv) - 1]; ++k)
+			*s++ = env_get_char(k);
+		*s++ = '\0';
+		lval = tmpenv;
+		/*
+		 * Find the first '=': it separates the name from the value
+		 */
+		s = strchr(tmpenv, '=');
+		if (s != NULL) {
+			*s++ = '\0';
+			rval = s;
+		} else
+			continue;
+		err = fdt_setprop(fdt, nodeoffset, lval, rval, strlen(rval)+1);
+		if (err < 0) {
+			printf("libfdt: %s\n", fdt_strerror(err));
+			return err;
+		}
+	}
+	return 0;
+}
+#endif /* ifdef CONFIG_OF_HAS_UBOOT_ENV */
+
+/********************************************************************/
+
+#ifdef CONFIG_OF_HAS_BD_T
+
+#define BDM(x)	{	.name = #x, .offset = offsetof(bd_t, bi_ ##x ) }
+
+static const struct {
+	const char *name;
+	int offset;
+} bd_map[] = {
+	BDM(memstart),
+	BDM(memsize),
+	BDM(flashstart),
+	BDM(flashsize),
+	BDM(flashoffset),
+	BDM(sramstart),
+	BDM(sramsize),
+#if defined(CONFIG_5xx) || defined(CONFIG_8xx) || defined(CONFIG_8260) \
+	|| defined(CONFIG_E500)
+	BDM(immr_base),
+#endif
+#if defined(CONFIG_MPC5xxx)
+	BDM(mbar_base),
+#endif
+#if defined(CONFIG_MPC83XX)
+	BDM(immrbar),
+#endif
+#if defined(CONFIG_MPC8220)
+	BDM(mbar_base),
+	BDM(inpfreq),
+	BDM(pcifreq),
+	BDM(pevfreq),
+	BDM(flbfreq),
+	BDM(vcofreq),
+#endif
+	BDM(bootflags),
+	BDM(ip_addr),
+	BDM(intfreq),
+	BDM(busfreq),
+#ifdef CONFIG_CPM2
+	BDM(cpmfreq),
+	BDM(brgfreq),
+	BDM(sccfreq),
+	BDM(vco),
+#endif
+#if defined(CONFIG_MPC5xxx)
+	BDM(ipbfreq),
+	BDM(pcifreq),
+#endif
+	BDM(baudrate),
+};
+
+
+int fdt_bd_t(void *fdt)
+{
+	bd_t *bd = gd->bd;
+	int   nodeoffset;
+	int   err;
+	u32   tmp;			/* used to set 32 bit integer properties */
+	int i;
+
+	err = fdt_check_header(fdt);
+	if (err < 0) {
+		printf("libfdt: %s\n", fdt_strerror(err));
+		return err;
+	}
+
+	/*
+	 * See if we already have a "bd_t" node, delete it if so.
+	 * Then create a new empty node.
+	 */
+	nodeoffset = fdt_path_offset (fdt, "/bd_t");
+	if (nodeoffset >= 0) {
+		err = fdt_del_node(fdt, nodeoffset);
+		if (err < 0) {
+			printf("libfdt: %s\n", fdt_strerror(err));
+			return err;
+		}
+	}
+	/*
+	 * Create a new node "/bd_t" (offset 0 is root level)
+	 */
+	nodeoffset = fdt_add_subnode(fdt, 0, "bd_t");
+	if (nodeoffset < 0) {
+		printf("libfdt: %s\n", fdt_strerror(nodeoffset));
+		return nodeoffset;
+	}
+	/*
+	 * Use the string/pointer structure to create the entries...
+	 */
+	for (i = 0; i < sizeof(bd_map)/sizeof(bd_map[0]); i++) {
+		tmp = cpu_to_be32(getenv("bootargs"));
+		err = fdt_setprop(fdt, nodeoffset, bd_map[i].name, &tmp, sizeof(tmp));
+		if (err < 0)
+			printf("libfdt: %s\n", fdt_strerror(err));
+	}
+	/*
+	 * Add a couple of oddball entries...
+	 */
+	err = fdt_setprop(fdt, nodeoffset, "enetaddr", &bd->bi_enetaddr, 6);
+	if (err < 0)
+		printf("libfdt: %s\n", fdt_strerror(err));
+	err = fdt_setprop(fdt, nodeoffset, "ethspeed", &bd->bi_ethspeed, 4);
+	if (err < 0)
+		printf("libfdt: %s\n", fdt_strerror(err));
+
+	return 0;
+}
+#endif /* ifdef CONFIG_OF_HAS_BD_T */
+
+#endif /* CONFIG_OF_LIBFDT */
diff --git a/cpu/mpc83xx/cpu.c b/cpu/mpc83xx/cpu.c
index 21b1646..e934ba6 100644
--- a/cpu/mpc83xx/cpu.c
+++ b/cpu/mpc83xx/cpu.c
@@ -300,92 +300,174 @@ void watchdog_reset (void)
 #if defined(CONFIG_OF_LIBFDT)
 
 /*
+ * "Setter" functions used to add/modify FDT entries.
+ */
+static int fdt_set_eth0(void *fdt, int nodeoffset, const char *name, bd_t *bd)
+{
+	/*
+	 * Fix it up if it exists, don't create it if it doesn't exist.
+	 */
+	if (fdt_get_property(fdt, nodeoffset, name, 0)) {
+		return fdt_setprop(fdt, nodeoffset, name, bd->bi_enetaddr, 6);
+	}
+	return -FDT_ERR_NOTFOUND;
+}
+#ifdef CONFIG_HAS_ETH1
+/* second onboard ethernet port */
+static int fdt_set_eth1(void *fdt, int nodeoffset, const char *name, bd_t *bd)
+{
+	/*
+	 * Fix it up if it exists, don't create it if it doesn't exist.
+	 */
+	if (fdt_get_property(fdt, nodeoffset, name, 0)) {
+		return fdt_setprop(fdt, nodeoffset, name, bd->bi_enet1addr, 6);
+	}
+	return -FDT_ERR_NOTFOUND;
+}
+#endif
+#ifdef CONFIG_HAS_ETH2
+/* third onboard ethernet port */
+static int fdt_set_eth2(void *fdt, int nodeoffset, const char *name, bd_t *bd)
+{
+	/*
+	 * Fix it up if it exists, don't create it if it doesn't exist.
+	 */
+	if (fdt_get_property(fdt, nodeoffset, name, 0)) {
+		return fdt_setprop(fdt, nodeoffset, name, bd->bi_enet2addr, 6);
+	}
+	return -FDT_ERR_NOTFOUND;
+}
+#endif
+#ifdef CONFIG_HAS_ETH3
+/* fourth onboard ethernet port */
+static int fdt_set_eth3(void *fdt, int nodeoffset, const char *name, bd_t *bd)
+{
+	/*
+	 * Fix it up if it exists, don't create it if it doesn't exist.
+	 */
+	if (fdt_get_property(fdt, nodeoffset, name, 0)) {
+		return fdt_setprop(fdt, nodeoffset, name, bd->bi_enet3addr, 6);
+	}
+	return -FDT_ERR_NOTFOUND;
+}
+#endif
+
+static int fdt_set_busfreq(void *fdt, int nodeoffset, const char *name, bd_t *bd)
+{
+	u32  tmp;
+	/*
+	 * Create or update the property.
+	 */
+	tmp = cpu_to_be32(bd->bi_busfreq);
+	return fdt_setprop(fdt, nodeoffset, name, &tmp, sizeof(tmp));
+}
+
+/*
  * Fixups to the fdt.  If "create" is TRUE, the node is created
  * unconditionally.  If "create" is FALSE, the node is updated
  * only if it already exists.
  */
-#define	FT_UPDATE	0x00000000		/* update existing property only */
-#define	FT_CREATE	0x00000001		/* create property if it doesn't exist */
-#define	FT_BUSFREQ	0x00000002		/* source is bd->bi_busfreq */
-#define	FT_ENETADDR	0x00000004		/* source is bd->bi_enetaddr */
 static const struct {
-	int  createflags;
 	char *node;
 	char *prop;
+	int (*set_fn)(void *fdt, int nodeoffset, const char *name, bd_t *bd);
 } fixup_props[] = {
-	{	FT_CREATE | FT_BUSFREQ,
-		"/cpus/" OF_CPU,
+	{	"/cpus/" OF_CPU,
 		 "bus-frequency",
+		fdt_set_busfreq
 	},
-	{	FT_CREATE | FT_BUSFREQ,
-		"/cpus/" OF_SOC,
-		"bus-frequency"
+	{	"/cpus/" OF_SOC,
+		"bus-frequency",
+		fdt_set_busfreq
 	},
-	{	FT_CREATE | FT_BUSFREQ,
-		"/" OF_SOC "/serial@4500/",
-		"clock-frequency"
+	{	"/" OF_SOC "/serial@4500/",
+		"clock-frequency",
+		fdt_set_busfreq
 	},
-	{	FT_CREATE | FT_BUSFREQ,
-		"/" OF_SOC "/serial@4600/",
-		"clock-frequency"
+	{	"/" OF_SOC "/serial@4600/",
+		"clock-frequency",
+		fdt_set_busfreq
 	},
 #ifdef CONFIG_MPC83XX_TSEC1
-	{	FT_UPDATE | FT_ENETADDR,
-		"/" OF_SOC "/ethernet@24000,
+	{	"/" OF_SOC "/ethernet@24000,
 		"mac-address",
+		fdt_set_eth0
 	},
-	{	FT_UPDATE | FT_ENETADDR,
-		"/" OF_SOC "/ethernet@24000,
+	{	"/" OF_SOC "/ethernet@24000,
 		"local-mac-address",
+		fdt_set_eth0
 	},
 #endif
 #ifdef CONFIG_MPC83XX_TSEC2
-	{	FT_UPDATE | FT_ENETADDR,
-		"/" OF_SOC "/ethernet@25000,
+	{	"/" OF_SOC "/ethernet@25000,
+		"mac-address",
+		fdt_set_eth1
+	},
+	{	"/" OF_SOC "/ethernet@25000,
+		"local-mac-address",
+		fdt_set_eth1
+	},
+#endif
+#ifdef CONFIG_UEC_ETH1
+#if CFG_UEC1_UCC_NUM == 0  /* UCC1 */
+	{	"/" OF_QE "/ucc@2000/mac-address",
+		"mac-address",
+		fdt_set_eth0
+	},
+	{	"/" OF_QE "/ucc@2000/mac-address",
+		"local-mac-address",
+		fdt_set_eth0
+	},
+#elif CFG_UEC1_UCC_NUM == 2  /* UCC3 */
+	{	"/" OF_QE "/ucc@2200/mac-address",
+		"mac-address",
+		fdt_set_eth0
+	},
+	{	"/" OF_QE "/ucc@2200/mac-address",
+		"local-mac-address",
+		fdt_set_eth0
+	},
+#endif
+#endif
+#ifdef CONFIG_UEC_ETH2
+#if CFG_UEC2_UCC_NUM == 1  /* UCC2 */
+	{	"/" OF_QE "/ucc@3000/mac-address",
 		"mac-address",
+		fdt_set_eth1
 	},
-	{	FT_UPDATE | FT_ENETADDR,
-		"/" OF_SOC "/ethernet@25000,
+	{	"/" OF_QE "/ucc@3000/mac-address",
 		"local-mac-address",
+		fdt_set_eth1
+	},
+#elif CFG_UEC1_UCC_NUM == 3  /* UCC4 */
+	{	"/" OF_QE "/ucc@3200/mac-address",
+		"mac-address",
+		fdt_set_eth1
 	},
+	{	"/" OF_QE "/ucc@3200/mac-address",
+		"local-mac-address",
+		fdt_set_eth1
+	},
+#endif
 #endif
 };
 
 void
 ft_cpu_setup(void *blob, bd_t *bd)
 {
-	int   nodeoffset;
-	int   err;
-	int j;
+	int  nodeoffset;
+	int  err;
+	int  j;
 
 	for (j = 0; j < (sizeof(fixup_props) / sizeof(fixup_props[0])); j++) {
-		nodeoffset = fdt_path_offset (fdt, fixup_props[j].node);
+		nodeoffset = fdt_path_offset(fdt, fixup_props[j].node);
 		if (nodeoffset >= 0) {
-			/*
-			 * If unconditional create or the property already exists...
-			 */
-			if ((fixup_props[j].createflags & FT_CREATE) ||
-				(fdt_get_property(fdt, nodeoffset, fixup_props[j].prop, 0))) {
-				if (fixup_props[j].createflags & FT_BUSFREQ) {
-					u32   tmp;
-
-					tmp = cpu_to_be32(bd->bi_busfreq);
-					err = fdt_setprop(fdt, nodeoffset,
-							fixup_props[j].prop, &tmp, sizeof(tmp));
-				} else if (fixup_props[j].createflags & FT_ENETADDR) {
-					err = fdt_setprop(fdt, nodeoffset,
-							fixup_props[j].prop, bd->bi_enetaddr, 6);
-				} else {
-					printf("ft_cpu_setup: %s %s has no flag for the value to set\n",
-						fixup_props[j].node,
-						fixup_props[j].prop);
-				}
-				if (err < 0)
-					printf("libfdt: %s %s returned %s\n",
-						fixup_props[j].node,
-						fixup_props[j].prop,
-						fdt_strerror(err));
-			}
+			err = (*fixup_props[j].set_fn)(blob, nodeoffset, fixup_props[j].prop, bd);
+			if (err < 0)
+				printf("set_fn/libfdt: %s %s returned %s\n",
+					fixup_props[j].node,
+					fixup_props[j].prop,
+					fdt_strerror(err));
 		}
 	}
 }
diff --git a/include/fdt.h b/include/fdt.h
index 48ccfd9..3dd3aca 100644
--- a/include/fdt.h
+++ b/include/fdt.h
@@ -1,3 +1,22 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser 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
+ */
+
 #ifndef _FDT_H
 #define _FDT_H
 
diff --git a/include/fdt_support.h b/include/fdt_support.h
new file mode 100644
index 0000000..a276834
--- /dev/null
+++ b/include/fdt_support.h
@@ -0,0 +1,42 @@
+/*
+ * (C) Copyright 2007
+ * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program 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 program 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 program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __FDT_SUPPORT_H
+#define __FDT_SUPPORT_H
+
+#ifdef CONFIG_OF_LIBFDT
+
+#include <fdt.h>
+
+int fdt_chosen(void *fdt, ulong initrd_start, ulong initrd_end, int force);
+
+#ifdef CONFIG_OF_HAS_UBOOT_ENV
+int fdt_env(void *fdt);
+#endif
+
+#ifdef CONFIG_OF_HAS_BD_T
+int fdt_bd_t(void *fdt);
+#endif
+
+#endif /* ifdef CONFIG_OF_LIBFDT */
+#endif /* ifndef __FDT_SUPPORT_H */
diff --git a/include/libfdt.h b/include/libfdt.h
index a0b4d55..f8bac73 100644
--- a/include/libfdt.h
+++ b/include/libfdt.h
@@ -1,5 +1,3 @@
-#ifndef _LIBFDT_H
-#define _LIBFDT_H
 /*
  * libfdt - Flat Device Tree manipulation
  * Copyright (C) 2006 David Gibson, IBM Corporation.
@@ -19,6 +17,9 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#ifndef _LIBFDT_H
+#define _LIBFDT_H
+
 #include <fdt.h>
 #include <libfdt_env.h>
 
@@ -60,6 +61,8 @@
 #define fdt_set_header(fdt, field, val) \
 	((struct fdt_header *)(fdt))->field = cpu_to_fdt32(val)
 
+int fdt_check_header(const void *fdt);
+
 void *fdt_offset_ptr(const void *fdt, int offset, int checklen);
 
 #define fdt_offset_ptr_typed(fdt, offset, var) \
@@ -83,6 +86,8 @@ void *fdt_getprop(const void *fdt, int nodeoffset,
 
 uint32_t fdt_next_tag(const void *fdt, int offset,
 		      int *nextoffset, char **namep);
+int fdt_num_reservemap(void *fdt, int *used, int *total);
+int fdt_get_reservemap(void *fdt, int n, struct fdt_reserve_entry *re);
 
 /* Write-in-place functions */
 int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
@@ -96,6 +101,8 @@ int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name,
 
 int fdt_nop_property(void *fdt, int nodeoffset, const char *name);
 int fdt_nop_node(void *fdt, int nodeoffset);
+int fdt_insert_reservemap_entry(void *fdt, int n, uint64_t addr, uint64_t size);
+
 
 /* Sequential-write functions */
 int fdt_create(void *buf, int bufsize);
@@ -112,6 +119,7 @@ int fdt_property(void *fdt, const char *name, const void *val, int len);
 	fdt_property(fdt, name, str, strlen(str)+1)
 int fdt_end_node(void *fdt);
 int fdt_finish(void *fdt);
+int fdt_replace_reservemap_entry(void *fdt, int n, uint64_t addr, uint64_t size);
 
 /* Read-write functions */
 int fdt_open_into(void *fdt, void *buf, int bufsize);
diff --git a/include/libfdt_env.h b/include/libfdt_env.h
index 6c77852..e746314 100644
--- a/include/libfdt_env.h
+++ b/include/libfdt_env.h
@@ -1,3 +1,23 @@
+/*
+ * libfdt - Flat Device Tree manipulation (build/run environment adaptation)
+ * Copyright (C) 2007 Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
+ * Original version written by David Gibson, IBM Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser 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
+ */
+
 #ifndef _LIBFDT_ENV_H
 #define _LIBFDT_ENV_H
 
diff --git a/libfdt/fdt.c b/libfdt/fdt.c
index 4b1c8ab..212b838 100644
--- a/libfdt/fdt.c
+++ b/libfdt/fdt.c
@@ -23,7 +23,7 @@
 
 #include "libfdt_internal.h"
 
-int _fdt_check_header(const void *fdt)
+int fdt_check_header(const void *fdt)
 {
 	if (fdt_magic(fdt) == FDT_MAGIC) {
 		/* Complete tree */
@@ -72,7 +72,7 @@ const char *_fdt_find_string(const char *strtab, int tabsize, const char *s)
 
 int fdt_move(const void *fdt, void *buf, int bufsize)
 {
-	int err = _fdt_check_header(fdt);
+	int err = fdt_check_header(fdt);
 
 	if (err)
 		return err;
diff --git a/libfdt/fdt_ro.c b/libfdt/fdt_ro.c
index ce01dc7..af33336 100644
--- a/libfdt/fdt_ro.c
+++ b/libfdt/fdt_ro.c
@@ -25,7 +25,7 @@
 
 #define CHECK_HEADER(fdt)	{ \
 	int err; \
-	if ((err = _fdt_check_header(fdt)) != 0) \
+	if ((err = fdt_check_header(fdt)) != 0) \
 		return err; \
 }
 
@@ -188,7 +188,7 @@ struct fdt_property *fdt_get_property(const void *fdt,
 	int offset, nextoffset;
 	int err;
 
-	if ((err = _fdt_check_header(fdt)) != 0)
+	if ((err = fdt_check_header(fdt)) != 0)
 		goto fail;
 
 	err = -FDT_ERR_BADOFFSET;
@@ -329,3 +329,75 @@ uint32_t fdt_next_tag(const void *fdt, int offset, int *nextoffset, char **namep
 
 	return tag;
 }
+
+/*
+ * Return the number of used reserve map entries and total slots available.
+ */
+int fdt_num_reservemap(void *fdt, int *used, int *total)
+{
+	struct fdt_reserve_entry *re;
+	int  start;
+	int  end;
+	int  err = fdt_check_header(fdt);
+
+	if (err != 0)
+		return err;
+
+	start = fdt_off_mem_rsvmap(fdt);
+
+	/*
+	 * Convention is that the reserve map is before the dt_struct,
+	 * but it does not have to be.
+	 */
+	end = fdt_totalsize(fdt);
+	if (end > fdt_off_dt_struct(fdt))
+		end = fdt_off_dt_struct(fdt);
+	if (end > fdt_off_dt_strings(fdt))
+		end = fdt_off_dt_strings(fdt);
+
+	/*
+	 * Since the reserved area list is zero terminated, you get one fewer.
+	 */
+	if (total)
+		*total = ((end - start) / sizeof(struct fdt_reserve_entry)) - 1;
+
+	if (used) {
+		*used = 0;
+		while (start < end) {
+			re = (struct fdt_reserve_entry *)(fdt + start);
+			if (re->size == 0)
+				return 0;	/* zero size terminates the list */
+
+			*used += 1;
+			start += sizeof(struct fdt_reserve_entry);
+		}
+		/*
+		 * If we get here, there was no zero size termination.
+		 */
+		return -FDT_ERR_BADLAYOUT;
+	}
+	return 0;
+}
+
+/*
+ * Return the nth reserve map entry.
+ */
+int fdt_get_reservemap(void *fdt, int n, struct fdt_reserve_entry *re)
+{
+	int  used;
+	int  total;
+	int  err;
+
+	err = fdt_num_reservemap(fdt, &used, &total);
+	if (err != 0)
+		return err;
+
+	if (n >= total)
+		return -FDT_ERR_NOSPACE;
+	if (re) {
+		*re = *(struct fdt_reserve_entry *)
+			_fdt_offset_ptr(fdt, n * sizeof(struct fdt_reserve_entry));
+	}
+	return 0;
+}
+
diff --git a/libfdt/fdt_rw.c b/libfdt/fdt_rw.c
index b33fbf4..aaafc53 100644
--- a/libfdt/fdt_rw.c
+++ b/libfdt/fdt_rw.c
@@ -27,7 +27,7 @@ static int rw_check_header(void *fdt)
 {
 	int err;
 
-	if ((err = _fdt_check_header(fdt)))
+	if ((err = fdt_check_header(fdt)))
 		return err;
 	if (fdt_version(fdt) < 0x11)
 		return -FDT_ERR_BADVERSION;
diff --git a/libfdt/fdt_wip.c b/libfdt/fdt_wip.c
index 261b9b0..cf81183 100644
--- a/libfdt/fdt_wip.c
+++ b/libfdt/fdt_wip.c
@@ -110,3 +110,29 @@ int fdt_nop_node(void *fdt, int nodeoffset)
 	nop_region(fdt_offset_ptr(fdt, nodeoffset, 0), endoffset - nodeoffset);
 	return 0;
 }
+
+/*
+ * Replace a reserve map entry in the nth slot.
+ */
+int fdt_replace_reservemap_entry(void *fdt, int n, uint64_t addr, uint64_t size)
+{
+	struct fdt_reserve_entry *re;
+	int  used;
+	int  total;
+	int  err;
+
+	err = fdt_num_reservemap(fdt, &used, &total);
+	if (err != 0)
+		return err;
+
+	if (n >= total)
+		return -FDT_ERR_NOSPACE;
+	re = (struct fdt_reserve_entry *)
+		(fdt + fdt_off_mem_rsvmap(fdt) +
+		 (n * sizeof(struct fdt_reserve_entry)));
+	re->address = cpu_to_fdt64(addr);
+	re->size    = cpu_to_fdt64(size);
+
+	return 0;
+}
+