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Diffstat (limited to 'include/fdt.h')
| -rw-r--r-- | include/fdt.h | 79 | 
1 files changed, 79 insertions, 0 deletions
| diff --git a/include/fdt.h b/include/fdt.h new file mode 100644 index 000000000..3dd3aca3b --- /dev/null +++ b/include/fdt.h @@ -0,0 +1,79 @@ +/* + * 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 */ |