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

1 files changed, 340 insertions, 279 deletions

diff --git a/common/cmd_fdt.c b/common/cmd_fdt.c
index 08fe351..571b8f1 100644
--- a/common/cmd_fdt.c
+++ b/common/cmd_fdt.c
@@ -37,46 +37,32 @@
 #include <fdt_support.h>
 
 #define MAX_LEVEL	32		/* how deeply nested we will go */
-#define SCRATCHPAD	1024	/* bytes of scratchpad memory */
+#define SCRATCHPAD	1024		/* bytes of scratchpad memory */
 
 /*
  * Global data (for the gd->bd)
  */
 DECLARE_GLOBAL_DATA_PTR;
 
-/*
- * Scratchpad memory.
- */
-static char data[SCRATCHPAD];
-
-
-/*
- * Function prototypes/declarations.
- */
 static int fdt_valid(void);
-static void print_data(const void *data, int len);
-
+static int fdt_parse_prop(char *pathp, char *prop, char *newval,
+	char *data, int *len);
+static int fdt_print(char *pathp, char *prop, int depth);
 
 /*
  * Flattened Device Tree command, see the help for parameter definitions.
  */
 int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 {
-	char		op;
-
 	if (argc < 2) {
 		printf ("Usage:\n%s\n", cmdtp->usage);
 		return 1;
 	}
 
-	/*
-	 * Figure out which subcommand was given
-	 */
-	op = argv[1][0];
 	/********************************************************************
 	 * Set the address of the fdt
 	 ********************************************************************/
-	if (op == 'a') {
+	if (argv[1][0] == 'a') {
 		/*
 		 * Set the address [and length] of the fdt.
 		 */
@@ -94,7 +80,8 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 			 */
 			len =  simple_strtoul(argv[3], NULL, 16);
 			if (len < fdt_totalsize(fdt)) {
-				printf ("New length %d < existing length %d, ignoring.\n",
+				printf ("New length %d < existing length %d, "
+					"ignoring.\n",
 					len, fdt_totalsize(fdt));
 			} else {
 				/*
@@ -102,7 +89,8 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 				 */
 				err = fdt_open_into(fdt, fdt, len);
 				if (err != 0) {
-					printf ("libfdt: %s\n", fdt_strerror(err));
+					printf ("libfdt fdt_open_into(): %s\n",
+						fdt_strerror(err));
 				}
 			}
 		}
@@ -110,12 +98,12 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 	/********************************************************************
 	 * Move the fdt
 	 ********************************************************************/
-	} else if (op == 'm') {
+	} else if ((argv[1][0] == 'm') && (argv[1][1] == 'o')) {
 		struct fdt_header *newaddr;
 		int  len;
 		int  err;
 
-		if (argc != 5) {
+		if (argc < 4) {
 			printf ("Usage:\n%s\n", cmdtp->usage);
 			return 1;
 		}
@@ -128,12 +116,22 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 			return 1;
 		}
 
-		newaddr = (struct fdt_header *)simple_strtoul(argv[3], NULL, 16);
-		len     =  simple_strtoul(argv[4], NULL, 16);
-		if (len < fdt_totalsize(fdt)) {
-			printf ("New length %d < existing length %d, aborting.\n",
-				len, fdt_totalsize(fdt));
-			return 1;
+		newaddr = (struct fdt_header *)simple_strtoul(argv[3],NULL,16);
+
+		/*
+		 * If the user specifies a length, use that.  Otherwise use the
+		 * current length.
+		 */
+		if (argc <= 4) {
+			len = fdt_totalsize(fdt);
+		} else {
+			len = simple_strtoul(argv[4], NULL, 16);
+			if (len < fdt_totalsize(fdt)) {
+				printf ("New length 0x%X < existing length "
+					"0x%X, aborting.\n",
+					len, fdt_totalsize(fdt));
+				return 1;
+			}
 		}
 
 		/*
@@ -141,26 +139,59 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 		 */
 		err = fdt_open_into(fdt, newaddr, len);
 		if (err != 0) {
-			printf ("libfdt: %s\n", fdt_strerror(err));
+			printf ("libfdt fdt_open_into(): %s\n",
+				fdt_strerror(err));
 			return 1;
 		}
 		fdt = newaddr;
 
 	/********************************************************************
-	 * Set the value of a node in the fdt.
+	 * Make a new node
+	 ********************************************************************/
+	} else if ((argv[1][0] == 'm') && (argv[1][1] == 'k')) {
+		char *pathp;		/* path */
+		char *nodep;		/* new node to add */
+		int  nodeoffset;	/* node offset from libfdt */
+		int  err;
+
+		/*
+		 * Parameters: Node path, new node to be appended to the path.
+		 */
+		if (argc < 4) {
+			printf ("Usage:\n%s\n", cmdtp->usage);
+			return 1;
+		}
+
+		pathp = argv[2];
+		nodep = argv[3];
+
+		nodeoffset = fdt_find_node_by_path (fdt, pathp);
+		if (nodeoffset < 0) {
+			/*
+			 * Not found or something else bad happened.
+			 */
+			printf ("libfdt fdt_find_node_by_path() returned %s\n",
+				fdt_strerror(nodeoffset));
+			return 1;
+		}
+		err = fdt_add_subnode(fdt, nodeoffset, nodep);
+		if (err < 0) {
+			printf ("libfdt fdt_add_subnode(): %s\n",
+				fdt_strerror(err));
+			return 1;
+		}
+
+	/********************************************************************
+	 * Set the value of a property in the fdt.
 	 ********************************************************************/
-	} else if (op == 's') {
+	} else if (argv[1][0] == 's') {
 		char *pathp;		/* path */
-		char *prop;			/* property */
-		struct fdt_property *nodep;	/* node struct pointer */
+		char *prop;		/* property */
 		char *newval;		/* value from the user (as a string) */
-		char *vp;			/* temporary value pointer */
-		char *cp;			/* temporary char pointer */
 		int  nodeoffset;	/* node offset from libfdt */
-		int  len;			/* new length of the property */
-		int  oldlen;		/* original length of the property */
-		unsigned long tmp;	/* holds converted values */
-		int  ret;			/* return value */
+		static char data[SCRATCHPAD];	/* storage for the property */
+		int  len;		/* new length of the property */
+		int  ret;		/* return value */
 
 		/*
 		 * Parameters: Node path, property, value.
@@ -174,121 +205,38 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 		prop   = argv[3];
 		newval = argv[4];
 
-		if (strcmp(pathp, "/") == 0) {
-			nodeoffset = 0;
-		} else {
-			nodeoffset = fdt_path_offset (fdt, pathp);
-			if (nodeoffset < 0) {
-				/*
-			 	 * Not found or something else bad happened.
-			 	 */
-				printf ("libfdt: %s\n", fdt_strerror(nodeoffset));
-				return 1;
-			}
-		}
-		nodep = fdt_getprop (fdt, nodeoffset, prop, &oldlen);
-		if (oldlen < 0) {
-			printf ("libfdt %s\n", fdt_strerror(oldlen));
-			return 1;
-		} else if (oldlen == 0) {
+		nodeoffset = fdt_find_node_by_path (fdt, pathp);
+		if (nodeoffset < 0) {
 			/*
-			 * The specified property has no value
+			 * Not found or something else bad happened.
 			 */
-			printf("%s has no value, cannot set one (yet).\n", prop);
+			printf ("libfdt fdt_find_node_by_path() returned %s\n",
+				fdt_strerror(nodeoffset));
 			return 1;
-		} else {
-			/*
-			 * Convert the new property
-			 */
-			vp = data;
-			if (*newval == '<') {
-				/*
-				 * Bigger values than bytes.
-				 */
-				len = 0;
-				newval++;
-				while ((*newval != '>') && (*newval != '\0')) {
-					cp = newval;
-					tmp = simple_strtoul(cp, &newval, 16);
-					if ((newval - cp) <= 2) {
-						*vp = tmp & 0xFF;
-						vp  += 1;
-						len += 1;
-					} else if ((newval - cp) <= 4) {
-						*(uint16_t *)vp = __cpu_to_be16(tmp);
-						vp  += 2;
-						len += 2;
-					} else if ((newval - cp) <= 8) {
-						*(uint32_t *)vp = __cpu_to_be32(tmp);
-						vp  += 4;
-						len += 4;
-					} else {
-						printf("Sorry, I could not convert \"%s\"\n", cp);
-						return 1;
-					}
-					while (*newval == ' ')
-						newval++;
-				}
-				if (*newval != '>') {
-					printf("Unexpected character '%c'\n", *newval);
-					return 1;
-				}
-			} else if (*newval == '[') {
-				/*
-				 * Byte stream.  Convert the values.
-				 */
-				len = 0;
-				newval++;
-				while ((*newval != ']') && (*newval != '\0')) {
-					tmp = simple_strtoul(newval, &newval, 16);
-					*vp++ = tmp & 0xFF;
-					len++;
-					while (*newval == ' ')
-						newval++;
-				}
-				if (*newval != ']') {
-					printf("Unexpected character '%c'\n", *newval);
-					return 1;
-				}
-			} else {
-				/*
-				 * Assume it is a string.  Copy it into our data area for
-				 * convenience (including the terminating '\0').
-				 */
-				len = strlen(newval) + 1;
-				strcpy(data, newval);
-			}
+		}
+		ret = fdt_parse_prop(pathp, prop, newval, data, &len);
+		if (ret != 0)
+			return ret;
 
-			ret = fdt_setprop(fdt, nodeoffset, prop, data, len);
-			if (ret < 0) {
-				printf ("libfdt %s\n", fdt_strerror(ret));
-				return 1;
-			}
+		ret = fdt_setprop(fdt, nodeoffset, prop, data, len);
+		if (ret < 0) {
+			printf ("libfdt fdt_setprop(): %s\n", fdt_strerror(ret));
+			return 1;
 		}
 
 	/********************************************************************
 	 * Print (recursive) / List (single level)
 	 ********************************************************************/
-	} else if ((op == 'p') || (op == 'l')) {
-		/*
-		 * Recursively print (a portion of) the fdt.
-		 */
-		static int offstack[MAX_LEVEL];
-		static char tabs[MAX_LEVEL+1] = "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t";
+	} else if ((argv[1][0] == 'p') || (argv[1][0] == 'l')) {
 		int depth = MAX_LEVEL;	/* how deep to print */
 		char *pathp;		/* path */
-		char *prop;			/* property */
-		void *nodep;		/* property node pointer */
-		int  nodeoffset;	/* node offset from libfdt */
-		int  nextoffset;	/* next node offset from libfdt */
-		uint32_t tag;		/* tag */
-		int  len;			/* length of the property */
-		int  level = 0;		/* keep track of nesting level */
+		char *prop;		/* property */
+		int  ret;		/* return value */
 
 		/*
 		 * list is an alias for print, but limited to 1 level
 		 */
-		if (op == 'l') {
+		if (argv[1][0] == 'l') {
 			depth = 1;
 		}
 
@@ -302,99 +250,14 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 		else
 			prop = NULL;
 
-		if (strcmp(pathp, "/") == 0) {
-			nodeoffset = 0;
-			printf("/");
-		} else {
-			nodeoffset = fdt_path_offset (fdt, pathp);
-			if (nodeoffset < 0) {
-				/*
-				 * Not found or something else bad happened.
-				 */
-				printf ("libfdt %s\n", fdt_strerror(nodeoffset));
-				return 1;
-			}
-		}
-		/*
-		 * The user passed in a property as well as node path.  Print only
-		 * the given property and then return.
-		 */
-		if (prop) {
-			nodep = fdt_getprop (fdt, nodeoffset, prop, &len);
-			if (len == 0) {
-				printf("%s %s\n", pathp, prop);	/* no property value */
-				return 0;
-			} else if (len > 0) {
-				printf("%s=", prop);
-				print_data (nodep, len);
-				printf("\n");
-				return 0;
-			} else {
-				printf ("libfdt %s\n", fdt_strerror(len));
-				return 1;
-			}
-		}
-
-		/*
-		 * The user passed in a node path and no property, print the node
-		 * and all subnodes.
-		 */
-		offstack[0] = nodeoffset;
-
-		while(level >= 0) {
-			tag = fdt_next_tag(fdt, nodeoffset, &nextoffset, &pathp);
-			switch(tag) {
-			case FDT_BEGIN_NODE:
-				if(level <= depth)
-					printf("%s%s {\n", &tabs[MAX_LEVEL - level], pathp);
-				level++;
-				offstack[level] = nodeoffset;
-				if (level >= MAX_LEVEL) {
-					printf("Aaaiii <splat> nested too deep.\n");
-					return 1;
-				}
-				break;
-			case FDT_END_NODE:
-				level--;
-				if(level <= depth)
-					printf("%s};\n", &tabs[MAX_LEVEL - level]);
-				if (level == 0) {
-					level = -1;		/* exit the loop */
-				}
-				break;
-			case FDT_PROP:
-				nodep = fdt_getprop (fdt, offstack[level], pathp, &len);
-				if (len < 0) {
-					printf ("libfdt %s\n", fdt_strerror(len));
-					return 1;
-				} else if (len == 0) {
-					/* the property has no value */
-					if(level <= depth)
-						printf("%s%s;\n", &tabs[MAX_LEVEL - level], pathp);
-				} else {
-					if(level <= depth) {
-						printf("%s%s=", &tabs[MAX_LEVEL - level], pathp);
-						print_data (nodep, len);
-						printf(";\n");
-					}
-				}
-				break;
-			case FDT_NOP:
-				break;
-			case FDT_END:
-				return 1;
-			default:
-				if(level <= depth)
-					printf("Unknown tag 0x%08X\n", tag);
-				return 1;
-			}
-			nodeoffset = nextoffset;
-		}
+		ret = fdt_print(pathp, prop, depth);
+		if (ret != 0)
+			return ret;
 
 	/********************************************************************
 	 * Remove a property/node
 	 ********************************************************************/
-	} else if (op == 'r') {
+	} else if (argv[1][0] == 'r') {
 		int  nodeoffset;	/* node offset from libfdt */
 		int  err;
 
@@ -402,17 +265,14 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 		 * Get the path.  The root node is an oddball, the offset
 		 * is zero and has no name.
 		 */
-		if (strcmp(argv[2], "/") == 0) {
-			nodeoffset = 0;
-		} else {
-			nodeoffset = fdt_path_offset (fdt, argv[2]);
-			if (nodeoffset < 0) {
-				/*
-				 * Not found or something else bad happened.
-				 */
-				printf ("libfdt %s\n", fdt_strerror(nodeoffset));
-				return 1;
-			}
+		nodeoffset = fdt_find_node_by_path (fdt, argv[2]);
+		if (nodeoffset < 0) {
+			/*
+			 * Not found or something else bad happened.
+			 */
+			printf ("libfdt fdt_find_node_by_path() returned %s\n",
+				fdt_strerror(nodeoffset));
+			return 1;
 		}
 		/*
 		 * Do the delete.  A fourth parameter means delete a property,
@@ -421,39 +281,40 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 		if (argc > 3) {
 			err = fdt_delprop(fdt, nodeoffset, argv[3]);
 			if (err < 0) {
-				printf("fdt_delprop libfdt: %s\n", fdt_strerror(err));
+				printf("libfdt fdt_delprop():  %s\n",
+					fdt_strerror(err));
 				return err;
 			}
 		} else {
 			err = fdt_del_node(fdt, nodeoffset);
 			if (err < 0) {
-				printf("fdt_del_node libfdt: %s\n", fdt_strerror(err));
+				printf("libfdt fdt_del_node():  %s\n",
+					fdt_strerror(err));
 				return err;
 			}
 		}
-
-	/********************************************************************
-	 * Create a chosen node
-	 ********************************************************************/
-	} else if (op == 'c') {
+	}
+#ifdef CONFIG_OF_BOARD_SETUP
+	/* Call the board-specific fixup routine */
+	else if (argv[1][0] == 'b')
+		ft_board_setup(fdt, gd->bd);
+#endif
+	/* Create a chosen node */
+	else if (argv[1][0] == 'c')
 		fdt_chosen(fdt, 0, 0, 1);
 
-	/********************************************************************
-	 * Create a u-boot-env node
-	 ********************************************************************/
-	} else if (op == 'e') {
+#ifdef CONFIG_OF_HAS_UBOOT_ENV
+	/* Create a u-boot-env node */
+	else if (argv[1][0] == 'e')
 		fdt_env(fdt);
-
-	/********************************************************************
-	 * Create a bd_t node
-	 ********************************************************************/
-	} else if (op == 'b') {
+#endif
+#ifdef CONFIG_OF_HAS_BD_T
+	/* Create a bd_t node */
+	else if (argv[1][0] == 'b')
 		fdt_bd_t(fdt);
-
-	/********************************************************************
-	 * Unrecognized command
-	 ********************************************************************/
-	} else {
+#endif
+	else {
+		/* Unrecognized command */
 		printf ("Usage:\n%s\n", cmdtp->usage);
 		return 1;
 	}
@@ -461,7 +322,7 @@ int do_fdt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 	return 0;
 }
 
-/********************************************************************/
+/****************************************************************************/
 
 static int fdt_valid(void)
 {
@@ -477,19 +338,21 @@ static int fdt_valid(void)
 		return 1;	/* valid */
 
 	if (err < 0) {
-		printf("libfdt: %s", fdt_strerror(err));
+		printf("libfdt fdt_check_header(): %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_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_version(fdt),
+					FDT_LAST_SUPPORTED_VERSION);
 				fdt = NULL;
 			}
 			return 0;
@@ -500,13 +363,91 @@ static int fdt_valid(void)
 	return 1;
 }
 
-/********************************************************************/
+/****************************************************************************/
 
 /*
- * OF flat tree handling
- * Written by: Pantelis Antoniou <pantelis.antoniou@gmail.com>
- * Updated by: Matthew McClintock <msm@freescale.com>
- * Converted to libfdt by: Gerald Van Baren <vanbaren@cideas.com>
+ * Parse the user's input, partially heuristic.  Valid formats:
+ * <00>		- hex byte
+ * <0011>	- hex half word (16 bits)
+ * <00112233>	- hex word (32 bits)
+ *		- hex double words (64 bits) are not supported, must use
+ *			a byte stream instead.
+ * [00 11 22 .. nn] - byte stream
+ * "string"	- If the the value doesn't start with "<" or "[", it is
+ *			treated as a string.  Note that the quotes are
+ *			stripped by the parser before we get the string.
+ */
+static int fdt_parse_prop(char *pathp, char *prop, char *newval,
+	char *data, int *len)
+{
+	char *cp;		/* temporary char pointer */
+	unsigned long tmp;	/* holds converted values */
+
+	if (*newval == '<') {
+		/*
+		 * Bigger values than bytes.
+		 */
+		*len = 0;
+		newval++;
+		while ((*newval != '>') && (*newval != '\0')) {
+			cp = newval;
+			tmp = simple_strtoul(cp, &newval, 16);
+			if ((newval - cp) <= 2) {
+				*data = tmp & 0xFF;
+				data  += 1;
+				*len += 1;
+			} else if ((newval - cp) <= 4) {
+				*(uint16_t *)data = __cpu_to_be16(tmp);
+				data  += 2;
+				*len += 2;
+			} else if ((newval - cp) <= 8) {
+				*(uint32_t *)data = __cpu_to_be32(tmp);
+				data  += 4;
+				*len += 4;
+			} else {
+				printf("Sorry, I could not convert \"%s\"\n",
+					cp);
+				return 1;
+			}
+			while (*newval == ' ')
+				newval++;
+		}
+		if (*newval != '>') {
+			printf("Unexpected character '%c'\n", *newval);
+			return 1;
+		}
+	} else if (*newval == '[') {
+		/*
+		 * Byte stream.  Convert the values.
+		 */
+		*len = 0;
+		newval++;
+		while ((*newval != ']') && (*newval != '\0')) {
+			tmp = simple_strtoul(newval, &newval, 16);
+			*data++ = tmp & 0xFF;
+			*len    = *len + 1;
+			while (*newval == ' ')
+				newval++;
+		}
+		if (*newval != ']') {
+			printf("Unexpected character '%c'\n", *newval);
+			return 1;
+		}
+	} else {
+		/*
+		 * Assume it is a string.  Copy it into our data area for
+		 * convenience (including the terminating '\0').
+		 */
+		*len = strlen(newval) + 1;
+		strcpy(data, newval);
+	}
+	return 0;
+}
+
+/****************************************************************************/
+
+/*
+ * Heuristic to guess if this is a string or concatenated strings.
  */
 
 static int is_printable_string(const void *data, int len)
@@ -546,6 +487,12 @@ static int is_printable_string(const void *data, int len)
 	return 1;
 }
 
+
+/*
+ * Print the property in the best format, a heuristic guess.  Print as
+ * a string, concatenated strings, a byte, word, double word, or (if all
+ * else fails) it is printed as a stream of bytes.
+ */
 static void print_data(const void *data, int len)
 {
 	int j;
@@ -601,32 +548,146 @@ static void print_data(const void *data, int len)
 	}
 }
 
+/****************************************************************************/
+
+/*
+ * Recursively print (a portion of) the fdt.  The depth parameter
+ * determines how deeply nested the fdt is printed.
+ */
+static int fdt_print(char *pathp, char *prop, int depth)
+{
+	static int offstack[MAX_LEVEL];
+	static char tabs[MAX_LEVEL+1] =
+		"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t"
+		"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t";
+	void *nodep;		/* property node pointer */
+	int  nodeoffset;	/* node offset from libfdt */
+	int  nextoffset;	/* next node offset from libfdt */
+	uint32_t tag;		/* tag */
+	int  len;		/* length of the property */
+	int  level = 0;		/* keep track of nesting level */
+
+	nodeoffset = fdt_find_node_by_path (fdt, pathp);
+	if (nodeoffset < 0) {
+		/*
+		 * Not found or something else bad happened.
+		 */
+		printf ("libfdt fdt_find_node_by_path() returned %s\n",
+			fdt_strerror(nodeoffset));
+		return 1;
+	}
+	/*
+	 * The user passed in a property as well as node path.
+	 * Print only the given property and then return.
+	 */
+	if (prop) {
+		nodep = fdt_getprop (fdt, nodeoffset, prop, &len);
+		if (len == 0) {
+			/* no property value */
+			printf("%s %s\n", pathp, prop);
+			return 0;
+		} else if (len > 0) {
+			printf("%s=", prop);
+			print_data (nodep, len);
+			printf("\n");
+			return 0;
+		} else {
+			printf ("libfdt fdt_getprop(): %s\n",
+				fdt_strerror(len));
+			return 1;
+		}
+	}
+
+	/*
+	 * The user passed in a node path and no property,
+	 * print the node and all subnodes.
+	 */
+	offstack[0] = nodeoffset;
+
+	while(level >= 0) {
+		tag = fdt_next_tag(fdt, nodeoffset, &nextoffset, &pathp);
+		switch(tag) {
+		case FDT_BEGIN_NODE:
+			if(level <= depth)
+				printf("%s%s {\n",
+					&tabs[MAX_LEVEL - level], pathp);
+			level++;
+			offstack[level] = nodeoffset;
+			if (level >= MAX_LEVEL) {
+				printf("Aaaiii <splat> nested too deep. "
+					"Aborting.\n");
+				return 1;
+			}
+			break;
+		case FDT_END_NODE:
+			level--;
+			if(level <= depth)
+				printf("%s};\n", &tabs[MAX_LEVEL - level]);
+			if (level == 0) {
+				level = -1;		/* exit the loop */
+			}
+			break;
+		case FDT_PROP:
+			nodep = fdt_getprop (fdt, offstack[level], pathp, &len);
+			if (len < 0) {
+				printf ("libfdt fdt_getprop(): %s\n",
+					fdt_strerror(len));
+				return 1;
+			} else if (len == 0) {
+				/* the property has no value */
+				if(level <= depth)
+					printf("%s%s;\n",
+						&tabs[MAX_LEVEL - level],
+						pathp);
+			} else {
+				if(level <= depth) {
+					printf("%s%s=",
+						&tabs[MAX_LEVEL - level],
+						pathp);
+					print_data (nodep, len);
+					printf(";\n");
+				}
+			}
+			break;
+		case FDT_NOP:
+			break;
+		case FDT_END:
+			return 1;
+		default:
+			if(level <= depth)
+				printf("Unknown tag 0x%08X\n", tag);
+			return 1;
+		}
+		nodeoffset = nextoffset;
+	}
+	return 0;
+}
+
 /********************************************************************/
 
 U_BOOT_CMD(
 	fdt,	5,	0,	do_fdt,
 	"fdt     - flattened device tree utility commands\n",
 	    "addr   <addr> [<length>]        - Set the fdt location to <addr>\n"
+#ifdef CONFIG_OF_BOARD_SETUP
+	"fdt boardsetup                      - Do board-specific set up\n"
+#endif
 	"fdt move   <fdt> <newaddr> <length> - Copy the fdt to <addr>\n"
 	"fdt print  <path> [<prop>]          - Recursive print starting at <path>\n"
 	"fdt list   <path> [<prop>]          - Print one level starting at <path>\n"
 	"fdt set    <path> <prop> [<val>]    - Set <property> [to <val>]\n"
 	"fdt mknode <path> <node>            - Create a new node after <path>\n"
 	"fdt rm     <path> [<prop>]          - Delete the node or <property>\n"
-	"fdt chosen - Add/update the \"/chosen\" branch in the tree\n"
+	"fdt chosen - Add/update the /chosen branch in the tree\n"
 #ifdef CONFIG_OF_HAS_UBOOT_ENV
-	"fdt env    - Add/replace the \"/u-boot-env\" branch in the tree\n"
+	"fdt env    - Add/replace the /u-boot-env branch in the tree\n"
 #endif
 #ifdef CONFIG_OF_HAS_BD_T
-	"fdt bd_t   - Add/replace the \"/bd_t\" branch in the tree\n"
+	"fdt bd_t   - Add/replace the /bd_t branch in the tree\n"
 #endif
 	"Hints:\n"
-	" * Set a larger length with the fdt addr command to add to the blob.\n"
-	" * If the property you are setting/printing has a '#' character,\n"
-	"     you MUST escape it with a \\ character or quote it with \" or\n"
-	"     it will be ignored as a comment.\n"
-	" * If the value has spaces in it, you MUST escape the spaces with\n"
-	"     \\ characters or quote it with \"\"\n"
+	" If the property you are setting/printing has a '#' character or spaces,\n"
+	"     you MUST escape it with a \\ character or quote it with \".\n"
 	"Examples: fdt print /               # print the whole tree\n"
 	"          fdt print /cpus \"#address-cells\"\n"
 	"          fdt set   /cpus \"#address-cells\" \"[00 00 00 01]\"\n"