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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 | /* * 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 _LIBFDT_H #define _LIBFDT_H #include <fdt.h> #include <libfdt_env.h> #define FDT_FIRST_SUPPORTED_VERSION 0x10 #define FDT_LAST_SUPPORTED_VERSION 0x11 /* Error codes: informative error codes */ #define FDT_ERR_NOTFOUND 1 #define FDT_ERR_EXISTS 2 #define FDT_ERR_NOSPACE 3 /* Error codes: codes for bad parameters */ #define FDT_ERR_BADOFFSET 4 #define FDT_ERR_BADPATH 5 #define FDT_ERR_BADSTATE 6 /* Error codes: codes for bad device tree blobs */ #define FDT_ERR_TRUNCATED 7 #define FDT_ERR_BADMAGIC 8 #define FDT_ERR_BADVERSION 9 #define FDT_ERR_BADSTRUCTURE 10 #define FDT_ERR_BADLAYOUT 11 #define FDT_ERR_MAX 11 #define fdt_get_header(fdt, field) \ (fdt32_to_cpu(((struct fdt_header *)(fdt))->field)) #define fdt_magic(fdt) (fdt_get_header(fdt, magic)) #define fdt_totalsize(fdt) (fdt_get_header(fdt, totalsize)) #define fdt_off_dt_struct(fdt) (fdt_get_header(fdt, off_dt_struct)) #define fdt_off_dt_strings(fdt) (fdt_get_header(fdt, off_dt_strings)) #define fdt_off_mem_rsvmap(fdt) (fdt_get_header(fdt, off_mem_rsvmap)) #define fdt_version(fdt) (fdt_get_header(fdt, version)) #define fdt_last_comp_version(fdt) (fdt_get_header(fdt, last_comp_version)) #define fdt_boot_cpuid_phys(fdt) (fdt_get_header(fdt, boot_cpuid_phys)) #define fdt_size_dt_strings(fdt) (fdt_get_header(fdt, size_dt_strings)) #define fdt_size_dt_struct(fdt) (fdt_get_header(fdt, size_dt_struct)) #define fdt_set_header(fdt, field, val) \ ((struct fdt_header *)(fdt))->field = cpu_to_fdt32(val) int fdt_check_header(const void *fdt); void *fdt_offset_ptr(const void *fdt, int offset, int checklen); #define fdt_offset_ptr_typed(fdt, offset, var) \ ((typeof(var))(fdt_offset_ptr((fdt), (offset), sizeof(*(var))))) int fdt_move(const void *fdt, void *buf, int bufsize); /* Read-only functions */ char *fdt_string(const void *fdt, int stroffset); int fdt_subnode_offset_namelen(const void *fdt, int parentoffset, const char *name, int namelen); int fdt_subnode_offset(const void *fdt, int parentoffset, const char *name); int fdt_find_node_by_path(const void *fdt, const char *path); int fdt_find_node_by_type(const void *fdt, int nodeoffset, const char *type); int fdt_node_is_compatible(const void *fdt, int nodeoffset, const char *compat); int fdt_find_compatible_node(const void *fdt, int nodeoffset, const char *type, const char *compat); struct fdt_property *fdt_get_property(const void *fdt, int nodeoffset, const char *name, int *lenp); void *fdt_getprop(const void *fdt, int nodeoffset, const char *name, int *lenp); uint32_t fdt_next_tag(const void *fdt, int offset, int *nextoffset, char **namep); int fdt_num_reservemap(void *fdt, int *used, int *total); int fdt_get_reservemap(void *fdt, int n, struct fdt_reserve_entry *re); /* Write-in-place functions */ int fdt_setprop_inplace(void *fdt, int nodeoffset, const char *name, const void *val, int len); #define fdt_setprop_inplace_typed(fdt, nodeoffset, name, val) \ ({ \ typeof(val) x = val; \ fdt_setprop_inplace(fdt, nodeoffset, name, &x, sizeof(x)); \ }) int fdt_nop_property(void *fdt, int nodeoffset, const char *name); int fdt_nop_node(void *fdt, int nodeoffset); int fdt_insert_reservemap_entry(void *fdt, int n, uint64_t addr, uint64_t size); /* Sequential-write functions */ int fdt_create(void *buf, int bufsize); int fdt_add_reservemap_entry(void *fdt, uint64_t addr, uint64_t size); int fdt_finish_reservemap(void *fdt); int fdt_begin_node(void *fdt, const char *name); int fdt_property(void *fdt, const char *name, const void *val, int len); #define fdt_property_typed(fdt, name, val) \ ({ \ typeof(val) x = (val); \ fdt_property((fdt), (name), &x, sizeof(x)); \ }) #define fdt_property_string(fdt, name, str) \ fdt_property(fdt, name, str, strlen(str)+1) int fdt_end_node(void *fdt); int fdt_finish(void *fdt); int fdt_replace_reservemap_entry(void *fdt, int n, uint64_t addr, uint64_t size); /* Read-write functions */ int fdt_open_into(void *fdt, void *buf, int bufsize); int fdt_pack(void *fdt); int fdt_setprop(void *fdt, int nodeoffset, const char *name, const void *val, int len); #define fdt_setprop_typed(fdt, nodeoffset, name, val) \ ({ \ typeof(val) x = (val); \ fdt_setprop((fdt), (nodeoffset), (name), &x, sizeof(x)); \ }) #define fdt_setprop_string(fdt, nodeoffset, name, str) \ fdt_setprop((fdt), (nodeoffset), (name), (str), strlen(str)+1) int fdt_find_and_setprop(void *fdt, const char *node, const char *prop, const void *val, int len, int create); int fdt_delprop(void *fdt, int nodeoffset, const char *name); int fdt_add_subnode_namelen(void *fdt, int parentoffset, const char *name, int namelen); int fdt_add_subnode(void *fdt, int parentoffset, const char *name); int fdt_del_node(void *fdt, int nodeoffset); /* Extra functions */ const char *fdt_strerror(int errval); #endif /* _LIBFDT_H */ |