Initial commit

dtc.h

@@ -0,0 +1,181 @@
+#ifndef _DTC_H
+#define _DTC_H
+
+/*
+ * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation.  2005.
+ *
+ * 
+ * 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 <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdarg.h>
+#include <assert.h>
+#include <ctype.h>
+#include <errno.h>
+#include <unistd.h>
+#include <netinet/in.h>
+
+static inline void die(char * str, ...)
+{
+	va_list ap;
+
+	va_start(ap, str);
+	fprintf(stderr, "FATAL ERROR: ");
+	vfprintf(stderr, str, ap);
+	exit(1);
+}
+
+static inline void *xmalloc(size_t len)
+{
+	void *new = malloc(len);
+
+	if (! new)
+		die("malloc() failed\n");
+
+	return new;
+}
+
+static inline void *xrealloc(void *p, size_t len)
+{
+	void *new = realloc(p, len);
+
+	if (! new)
+		die("realloc() failed (len=%d)\n", len);
+
+	return new;
+}
+
+typedef uint16_t u16;
+typedef uint32_t u32;
+typedef uint64_t u64;
+typedef u32 cell_t;
+
+#define cpu_to_be16(x)	htons(x)
+#define be16_to_cpu(x)	ntohs(x)
+
+#define cpu_to_be32(x)	htonl(x)
+#define be32_to_cpu(x)	ntohl(x)
+
+
+
+#define streq(a, b)	(strcmp((a), (b)) == 0)
+#define ALIGN(x, a)	(((x) + (a) - 1) & ~((a) - 1))
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
+/* Data blobs */
+struct data {
+	int len;
+	char *val;
+	int asize;
+};
+
+#define empty_data ((struct data){.len = 0, .val = NULL, .asize = 0})
+
+void data_free(struct data d);
+
+struct data data_grow_for(struct data d, int xlen);
+
+struct data data_copy_mem(char *mem, int len);
+struct data data_copy_escape_string(char *s, int len);
+struct data data_copy_file(FILE *f, size_t len);
+
+struct data data_append_data(struct data d, void *p, int len);
+struct data data_append_cell(struct data d, cell_t word);
+struct data data_append_byte(struct data d, uint8_t byte);
+struct data data_append_zeroes(struct data d, int len);
+struct data data_append_align(struct data d, int align);
+
+int data_is_one_string(struct data d);
+
+/* DT constraints */
+
+#define MAX_PROPNAME_LEN	31
+#define MAX_NODENAME_LEN	31
+
+/* Live trees */
+struct property {
+	char *name;
+	struct data val;
+
+	struct property *next;
+};
+
+struct node {
+	char *name;
+	struct property *proplist;
+	struct node *children;
+
+	struct node *parent;
+	struct node *next_sibling;
+
+	char *fullpath;
+	int basenamelen;
+
+	cell_t phandle;
+	int addr_cells, size_cells;
+};
+
+#define for_each_property(n, p) \
+	for ((p) = (n)->proplist; (p); (p) = (p)->next)
+
+#define for_each_child(n, c)	\
+	for ((c) = (n)->children; (c); (c) = (c)->next_sibling)
+
+struct property *build_property(char *name, struct data val);
+struct property *build_empty_property(char *name);
+struct property *chain_property(struct property *first, struct property *list);
+
+struct node *build_node(struct property *proplist, struct node *children);
+struct node *name_node(struct node *node, char *name);
+struct node *chain_node(struct node *first, struct node *list);
+
+void add_property(struct node *node, struct property *prop);
+void add_child(struct node *parent, struct node *child);
+
+int check_device_tree(struct node *dt);
+
+/* Flattened trees */
+
+enum flat_dt_format {
+	FFMT_BIN,
+	FFMT_ASM,
+};
+
+void write_dt_blob(FILE *f, struct node *tree, int version, int reservenum);
+void write_dt_asm(FILE *f, struct node *tree, int version, int reservenum);
+
+struct node *dt_from_blob(FILE *f);
+
+/* Tree source */
+
+void write_tree_source(FILE *f, struct node *tree, int level);
+
+struct node *dt_from_source(FILE *f);
+
+/* FS trees */
+
+struct node *dt_from_fs(char *dirname);
+
+/* misc */
+
+char *join_path(char *path, char *name);
+void fill_fullpaths(struct node *tree, char *prefix);
+
+#endif /* _DTC_H */