1 #ifndef _DTC_H 2 #define _DTC_H 3 4 /* 5 * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005. 6 * 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of the 11 * License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 21 * USA 22 */ 23 24 #include <stdio.h> 25 #include <string.h> 26 #include <stdlib.h> 27 #include <stdint.h> 28 #include <stdbool.h> 29 #include <stdarg.h> 30 #include <assert.h> 31 #include <ctype.h> 32 #include <errno.h> 33 #include <unistd.h> 34 35 #include <libfdt_env.h> 36 #include <fdt.h> 37 38 #include "util.h" 39 40 #ifdef DEBUG 41 #define debug(...) printf(__VA_ARGS__) 42 #else 43 #define debug(...) 44 #endif 45 46 47 #define DEFAULT_FDT_VERSION 17 48 49 /* 50 * Command line options 51 */ 52 extern int quiet; /* Level of quietness */ 53 extern int reservenum; /* Number of memory reservation slots */ 54 extern int minsize; /* Minimum blob size */ 55 extern int padsize; /* Additional padding to blob */ 56 extern int alignsize; /* Additional padding to blob accroding to the alignsize */ 57 extern int phandle_format; /* Use linux,phandle or phandle properties */ 58 extern int generate_symbols; /* generate symbols for nodes with labels */ 59 extern int generate_fixups; /* generate fixups */ 60 extern int auto_label_aliases; /* auto generate labels -> aliases */ 61 62 #define PHANDLE_LEGACY 0x1 63 #define PHANDLE_EPAPR 0x2 64 #define PHANDLE_BOTH 0x3 65 66 typedef uint32_t cell_t; 67 68 69 #define streq(a, b) (strcmp((a), (b)) == 0) 70 #define strneq(a, b, n) (strncmp((a), (b), (n)) == 0) 71 72 #define ALIGN(x, a) (((x) + (a) - 1) & ~((a) - 1)) 73 74 /* Data blobs */ 75 enum markertype { 76 REF_PHANDLE, 77 REF_PATH, 78 LABEL, 79 }; 80 81 struct marker { 82 enum markertype type; 83 int offset; 84 char *ref; 85 struct marker *next; 86 }; 87 88 struct data { 89 int len; 90 char *val; 91 struct marker *markers; 92 }; 93 94 95 #define empty_data ((struct data){ 0 /* all .members = 0 or NULL */ }) 96 97 #define for_each_marker(m) \ 98 for (; (m); (m) = (m)->next) 99 #define for_each_marker_of_type(m, t) \ 100 for_each_marker(m) \ 101 if ((m)->type == (t)) 102 103 void data_free(struct data d); 104 105 struct data data_grow_for(struct data d, int xlen); 106 107 struct data data_copy_mem(const char *mem, int len); 108 struct data data_copy_escape_string(const char *s, int len); 109 struct data data_copy_file(FILE *f, size_t len); 110 111 struct data data_append_data(struct data d, const void *p, int len); 112 struct data data_insert_at_marker(struct data d, struct marker *m, 113 const void *p, int len); 114 struct data data_merge(struct data d1, struct data d2); 115 struct data data_append_cell(struct data d, cell_t word); 116 struct data data_append_integer(struct data d, uint64_t word, int bits); 117 struct data data_append_re(struct data d, const struct fdt_reserve_entry *re); 118 struct data data_append_addr(struct data d, uint64_t addr); 119 struct data data_append_byte(struct data d, uint8_t byte); 120 struct data data_append_zeroes(struct data d, int len); 121 struct data data_append_align(struct data d, int align); 122 123 struct data data_add_marker(struct data d, enum markertype type, char *ref); 124 125 bool data_is_one_string(struct data d); 126 127 /* DT constraints */ 128 129 #define MAX_PROPNAME_LEN 31 130 #define MAX_NODENAME_LEN 31 131 132 /* Live trees */ 133 struct label { 134 bool deleted; 135 char *label; 136 struct label *next; 137 }; 138 139 struct property { 140 bool deleted; 141 char *name; 142 struct data val; 143 144 struct property *next; 145 146 struct label *labels; 147 }; 148 149 struct node { 150 bool deleted; 151 char *name; 152 struct property *proplist; 153 struct node *children; 154 155 struct node *parent; 156 struct node *next_sibling; 157 158 char *fullpath; 159 int basenamelen; 160 161 cell_t phandle; 162 int addr_cells, size_cells; 163 164 struct label *labels; 165 }; 166 167 #define for_each_label_withdel(l0, l) \ 168 for ((l) = (l0); (l); (l) = (l)->next) 169 170 #define for_each_label(l0, l) \ 171 for_each_label_withdel(l0, l) \ 172 if (!(l)->deleted) 173 174 #define for_each_property_withdel(n, p) \ 175 for ((p) = (n)->proplist; (p); (p) = (p)->next) 176 177 #define for_each_property(n, p) \ 178 for_each_property_withdel(n, p) \ 179 if (!(p)->deleted) 180 181 #define for_each_child_withdel(n, c) \ 182 for ((c) = (n)->children; (c); (c) = (c)->next_sibling) 183 184 #define for_each_child(n, c) \ 185 for_each_child_withdel(n, c) \ 186 if (!(c)->deleted) 187 188 void add_label(struct label **labels, char *label); 189 void delete_labels(struct label **labels); 190 191 struct property *build_property(char *name, struct data val); 192 struct property *build_property_delete(char *name); 193 struct property *chain_property(struct property *first, struct property *list); 194 struct property *reverse_properties(struct property *first); 195 196 struct node *build_node(struct property *proplist, struct node *children); 197 struct node *build_node_delete(void); 198 struct node *name_node(struct node *node, char *name); 199 struct node *chain_node(struct node *first, struct node *list); 200 struct node *merge_nodes(struct node *old_node, struct node *new_node); 201 202 void add_property(struct node *node, struct property *prop); 203 void delete_property_by_name(struct node *node, char *name); 204 void delete_property(struct property *prop); 205 void add_child(struct node *parent, struct node *child); 206 void delete_node_by_name(struct node *parent, char *name); 207 void delete_node(struct node *node); 208 void append_to_property(struct node *node, 209 char *name, const void *data, int len); 210 211 const char *get_unitname(struct node *node); 212 struct property *get_property(struct node *node, const char *propname); 213 cell_t propval_cell(struct property *prop); 214 struct property *get_property_by_label(struct node *tree, const char *label, 215 struct node **node); 216 struct marker *get_marker_label(struct node *tree, const char *label, 217 struct node **node, struct property **prop); 218 struct node *get_subnode(struct node *node, const char *nodename); 219 struct node *get_node_by_path(struct node *tree, const char *path); 220 struct node *get_node_by_label(struct node *tree, const char *label); 221 struct node *get_node_by_phandle(struct node *tree, cell_t phandle); 222 struct node *get_node_by_ref(struct node *tree, const char *ref); 223 cell_t get_node_phandle(struct node *root, struct node *node); 224 225 uint32_t guess_boot_cpuid(struct node *tree); 226 227 /* Boot info (tree plus memreserve information */ 228 229 struct reserve_info { 230 struct fdt_reserve_entry re; 231 232 struct reserve_info *next; 233 234 struct label *labels; 235 }; 236 237 struct reserve_info *build_reserve_entry(uint64_t start, uint64_t len); 238 struct reserve_info *chain_reserve_entry(struct reserve_info *first, 239 struct reserve_info *list); 240 struct reserve_info *add_reserve_entry(struct reserve_info *list, 241 struct reserve_info *new); 242 243 244 struct dt_info { 245 unsigned int dtsflags; 246 struct reserve_info *reservelist; 247 uint32_t boot_cpuid_phys; 248 struct node *dt; /* the device tree */ 249 }; 250 251 /* DTS version flags definitions */ 252 #define DTSF_V1 0x0001 /* /dts-v1/ */ 253 #define DTSF_PLUGIN 0x0002 /* /plugin/ */ 254 255 struct dt_info *build_dt_info(unsigned int dtsflags, 256 struct reserve_info *reservelist, 257 struct node *tree, uint32_t boot_cpuid_phys); 258 void sort_tree(struct dt_info *dti); 259 void generate_label_tree(struct dt_info *dti, char *name, bool allocph); 260 void generate_fixups_tree(struct dt_info *dti, char *name); 261 void generate_local_fixups_tree(struct dt_info *dti, char *name); 262 263 /* Checks */ 264 265 void parse_checks_option(bool warn, bool error, const char *arg); 266 void process_checks(bool force, struct dt_info *dti); 267 268 /* Flattened trees */ 269 270 void dt_to_blob(FILE *f, struct dt_info *dti, int version); 271 void dt_to_asm(FILE *f, struct dt_info *dti, int version); 272 273 struct dt_info *dt_from_blob(const char *fname); 274 275 /* Tree source */ 276 277 void dt_to_source(FILE *f, struct dt_info *dti); 278 struct dt_info *dt_from_source(const char *f); 279 280 /* FS trees */ 281 282 struct dt_info *dt_from_fs(const char *dirname); 283 284 #endif /* _DTC_H */ 285