include/fdt.h

/*
 * 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

#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 */

	/* version 2 fields below */
	uint32_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 */

	/* version 17 fields below */
	uint32_t size_dt_struct;	 /* size of the structure block */
};

struct fdt_reserve_entry {
	uint64_t address;
	uint64_t size;
};

struct fdt_node_header {
	uint32_t tag;
	char name[0];
};

struct fdt_property {
	uint32_t tag;
	uint32_t len;
	uint32_t nameoff;
	char data[0];
};

#endif /* !__ASSEMBLY */

#define FDT_MAGIC	0xd00dfeed	/* 4: version, 4: total size */
#define FDT_TAGSIZE	sizeof(uint32_t)

#define FDT_BEGIN_NODE	0x1		/* Start node: full name */
#define FDT_END_NODE	0x2		/* End node */
#define FDT_PROP	0x3		/* Property: name off,
					   size, content */
#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_V16_SIZE	FDT_V3_SIZE
#define FDT_V17_SIZE	(FDT_V16_SIZE + sizeof(uint32_t))

#endif /* _FDT_H */