1 /* SPDX-License-Identifier: GPL-2.0-or-later */
6 * (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
21 #include <libfdt_env.h>
27 #define debug(...) printf(__VA_ARGS__)
32 #define DEFAULT_FDT_VERSION 17
35 * Command line options
37 extern int quiet; /* Level of quietness */
38 extern unsigned int reservenum; /* Number of memory reservation slots */
39 extern int minsize; /* Minimum blob size */
40 extern int padsize; /* Additional padding to blob */
41 extern int alignsize; /* Additional padding to blob accroding to the alignsize */
42 extern int phandle_format; /* Use linux,phandle or phandle properties */
43 extern int generate_symbols; /* generate symbols for nodes with labels */
44 extern int generate_fixups; /* generate fixups */
45 extern int auto_label_aliases; /* auto generate labels -> aliases */
46 extern int annotate; /* annotate .dts with input source location */
48 #define PHANDLE_LEGACY 0x1
49 #define PHANDLE_EPAPR 0x2
50 #define PHANDLE_BOTH 0x3
52 typedef uint32_t cell_t;
54 static inline bool phandle_is_valid(cell_t phandle)
56 return phandle != 0 && phandle != ~0U;
59 static inline uint16_t dtb_ld16(const void *p)
61 const uint8_t *bp = (const uint8_t *)p;
63 return ((uint16_t)bp[0] << 8)
67 static inline uint32_t dtb_ld32(const void *p)
69 const uint8_t *bp = (const uint8_t *)p;
71 return ((uint32_t)bp[0] << 24)
72 | ((uint32_t)bp[1] << 16)
73 | ((uint32_t)bp[2] << 8)
77 static inline uint64_t dtb_ld64(const void *p)
79 const uint8_t *bp = (const uint8_t *)p;
81 return ((uint64_t)bp[0] << 56)
82 | ((uint64_t)bp[1] << 48)
83 | ((uint64_t)bp[2] << 40)
84 | ((uint64_t)bp[3] << 32)
85 | ((uint64_t)bp[4] << 24)
86 | ((uint64_t)bp[5] << 16)
87 | ((uint64_t)bp[6] << 8)
91 #define streq(a, b) (strcmp((a), (b)) == 0)
92 #define strstarts(s, prefix) (strncmp((s), (prefix), strlen(prefix)) == 0)
93 #define strprefixeq(a, n, b) (strlen(b) == (n) && (memcmp(a, b, n) == 0))
94 static inline bool strends(const char *str, const char *suffix)
96 unsigned int len, suffix_len;
99 suffix_len = strlen(suffix);
100 if (len < suffix_len)
102 return streq(str + len - suffix_len, suffix);
105 #define ALIGN(x, a) (((x) + (a) - 1) & ~((a) - 1))
120 static inline bool is_type_marker(enum markertype type)
122 return type >= TYPE_UINT8;
125 extern const char *markername(enum markertype markertype);
128 enum markertype type;
137 struct marker *markers;
141 #define empty_data ((struct data){ 0 /* all .members = 0 or NULL */ })
143 #define for_each_marker(m) \
144 for (; (m); (m) = (m)->next)
145 #define for_each_marker_of_type(m, t) \
147 if ((m)->type == (t))
149 static inline struct marker *next_type_marker(struct marker *m)
152 if (is_type_marker(m->type))
157 static inline size_t type_marker_length(struct marker *m)
159 struct marker *next = next_type_marker(m->next);
162 return next->offset - m->offset;
166 void data_free(struct data d);
168 struct data data_grow_for(struct data d, unsigned int xlen);
170 struct data data_copy_mem(const char *mem, int len);
171 struct data data_copy_escape_string(const char *s, int len);
172 struct data data_copy_file(FILE *f, size_t len);
174 struct data data_append_data(struct data d, const void *p, int len);
175 struct data data_insert_at_marker(struct data d, struct marker *m,
176 const void *p, int len);
177 struct data data_merge(struct data d1, struct data d2);
178 struct data data_append_cell(struct data d, cell_t word);
179 struct data data_append_integer(struct data d, uint64_t word, int bits);
180 struct data data_append_re(struct data d, uint64_t address, uint64_t size);
181 struct data data_append_addr(struct data d, uint64_t addr);
182 struct data data_append_byte(struct data d, uint8_t byte);
183 struct data data_append_zeroes(struct data d, int len);
184 struct data data_append_align(struct data d, int align);
186 struct data data_add_marker(struct data d, enum markertype type, char *ref);
188 bool data_is_one_string(struct data d);
192 #define MAX_PROPNAME_LEN 31
193 #define MAX_NODENAME_LEN 31
211 struct property *next;
213 struct label *labels;
214 struct srcpos *srcpos;
220 struct property *proplist;
221 struct node *children;
224 struct node *next_sibling;
230 int addr_cells, size_cells;
232 struct label *labels;
233 const struct bus_type *bus;
234 struct srcpos *srcpos;
236 bool omit_if_unused, is_referenced;
239 #define for_each_label_withdel(l0, l) \
240 for ((l) = (l0); (l); (l) = (l)->next)
242 #define for_each_label(l0, l) \
243 for_each_label_withdel(l0, l) \
246 #define for_each_property_withdel(n, p) \
247 for ((p) = (n)->proplist; (p); (p) = (p)->next)
249 #define for_each_property(n, p) \
250 for_each_property_withdel(n, p) \
253 #define for_each_child_withdel(n, c) \
254 for ((c) = (n)->children; (c); (c) = (c)->next_sibling)
256 #define for_each_child(n, c) \
257 for_each_child_withdel(n, c) \
260 void add_label(struct label **labels, char *label);
261 void delete_labels(struct label **labels);
263 struct property *build_property(char *name, struct data val,
264 struct srcpos *srcpos);
265 struct property *build_property_delete(char *name);
266 struct property *chain_property(struct property *first, struct property *list);
267 struct property *reverse_properties(struct property *first);
269 struct node *build_node(struct property *proplist, struct node *children,
270 struct srcpos *srcpos);
271 struct node *build_node_delete(struct srcpos *srcpos);
272 struct node *name_node(struct node *node, char *name);
273 struct node *omit_node_if_unused(struct node *node);
274 struct node *reference_node(struct node *node);
275 struct node *chain_node(struct node *first, struct node *list);
276 struct node *merge_nodes(struct node *old_node, struct node *new_node);
277 struct node *add_orphan_node(struct node *old_node, struct node *new_node, char *ref);
279 void add_property(struct node *node, struct property *prop);
280 void delete_property_by_name(struct node *node, char *name);
281 void delete_property(struct property *prop);
282 void add_child(struct node *parent, struct node *child);
283 void delete_node_by_name(struct node *parent, char *name);
284 void delete_node(struct node *node);
285 void append_to_property(struct node *node,
286 char *name, const void *data, int len,
287 enum markertype type);
289 const char *get_unitname(struct node *node);
290 struct property *get_property(struct node *node, const char *propname);
291 cell_t propval_cell(struct property *prop);
292 cell_t propval_cell_n(struct property *prop, unsigned int n);
293 struct property *get_property_by_label(struct node *tree, const char *label,
295 struct marker *get_marker_label(struct node *tree, const char *label,
296 struct node **node, struct property **prop);
297 struct node *get_subnode(struct node *node, const char *nodename);
298 struct node *get_node_by_path(struct node *tree, const char *path);
299 struct node *get_node_by_label(struct node *tree, const char *label);
300 struct node *get_node_by_phandle(struct node *tree, cell_t phandle);
301 struct node *get_node_by_ref(struct node *tree, const char *ref);
302 cell_t get_node_phandle(struct node *root, struct node *node);
304 uint32_t guess_boot_cpuid(struct node *tree);
306 /* Boot info (tree plus memreserve information */
308 struct reserve_info {
309 uint64_t address, size;
311 struct reserve_info *next;
313 struct label *labels;
316 struct reserve_info *build_reserve_entry(uint64_t start, uint64_t len);
317 struct reserve_info *chain_reserve_entry(struct reserve_info *first,
318 struct reserve_info *list);
319 struct reserve_info *add_reserve_entry(struct reserve_info *list,
320 struct reserve_info *new);
324 unsigned int dtsflags;
325 struct reserve_info *reservelist;
326 uint32_t boot_cpuid_phys;
327 struct node *dt; /* the device tree */
328 const char *outname; /* filename being written to, "-" for stdout */
331 /* DTS version flags definitions */
332 #define DTSF_V1 0x0001 /* /dts-v1/ */
333 #define DTSF_PLUGIN 0x0002 /* /plugin/ */
335 struct dt_info *build_dt_info(unsigned int dtsflags,
336 struct reserve_info *reservelist,
337 struct node *tree, uint32_t boot_cpuid_phys);
338 void sort_tree(struct dt_info *dti);
339 void generate_label_tree(struct dt_info *dti, char *name, bool allocph);
340 void generate_fixups_tree(struct dt_info *dti, char *name);
341 void generate_local_fixups_tree(struct dt_info *dti, char *name);
345 void parse_checks_option(bool warn, bool error, const char *arg);
346 void process_checks(bool force, struct dt_info *dti);
348 /* Flattened trees */
350 void dt_to_blob(FILE *f, struct dt_info *dti, int version);
351 void dt_to_asm(FILE *f, struct dt_info *dti, int version);
353 struct dt_info *dt_from_blob(const char *fname);
357 void dt_to_source(FILE *f, struct dt_info *dti);
358 struct dt_info *dt_from_source(const char *f);
362 void dt_to_yaml(FILE *f, struct dt_info *dti);
366 struct dt_info *dt_from_fs(const char *dirname);