1 /* $OpenBSD: fdt.h,v 1.3 2017/08/23 18:03:54 kettenis Exp $ */ 2 3 /* 4 * Copyright (c) 2009 Dariusz Swiderski <sfires@sfires.net> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 struct fdt_head { 20 uint32_t fh_magic; 21 uint32_t fh_size; 22 uint32_t fh_struct_off; 23 uint32_t fh_strings_off; 24 uint32_t fh_reserve_off; 25 uint32_t fh_version; 26 uint32_t fh_comp_ver; /* last compatible version */ 27 uint32_t fh_boot_cpu_id; /* fh_version >=2 */ 28 uint32_t fh_strings_size; /* fh_version >=3 */ 29 uint32_t fh_struct_size; /* fh_version >=17 */ 30 }; 31 32 struct fdt { 33 struct fdt_head *header; 34 char *tree; 35 char *strings; 36 char *memory; 37 char *end; 38 int version; 39 int strings_size; 40 int struct_size; 41 }; 42 43 #define FDT_MAGIC 0xd00dfeed 44 #define FDT_NODE_BEGIN 0x01 45 #define FDT_NODE_END 0x02 46 #define FDT_PROPERTY 0x03 47 #define FDT_NOP 0x04 48 #define FDT_END 0x09 49 50 #define FDT_CODE_VERSION 0x11 51 52 int fdt_init(void *); 53 void fdt_finalize(void); 54 size_t fdt_get_size(void *); 55 void *fdt_next_node(void *); 56 void *fdt_child_node(void *); 57 char *fdt_node_name(void *); 58 void *fdt_find_node(char *); 59 int fdt_node_property(void *, char *, char **); 60 int fdt_node_property_int(void *, char *, int *); 61 int fdt_node_property_ints(void *, char *, int *, int); 62 int fdt_node_set_property(void *, char *, void *, int); 63 int fdt_node_add_property(void *, char *, void *, int); 64 int fdt_node_add_node(void *, char *, void **); 65 void *fdt_parent_node(void *); 66 int fdt_node_is_compatible(void *, const char *); 67 #ifdef DEBUG 68 void *fdt_print_property(void *, int); 69 void fdt_print_node(void *, int); 70 void fdt_print_tree(void); 71 #endif 72