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83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
64dbbd40 GVB |
2 | /* |
3 | * (C) Copyright 2007 | |
4 | * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com | |
5 | * | |
2a523f52 | 6 | * Copyright 2010-2011 Freescale Semiconductor, Inc. |
64dbbd40 GVB |
7 | */ |
8 | ||
d678a59d | 9 | #include <common.h> |
6dca1d9a | 10 | #include <abuf.h> |
7b51b576 | 11 | #include <env.h> |
f7ae49fc | 12 | #include <log.h> |
9ad0a799 | 13 | #include <mapmem.h> |
90526e9f | 14 | #include <net.h> |
3e303f74 | 15 | #include <stdio_dev.h> |
0e7cc083 | 16 | #include <dm/ofnode.h> |
64dbbd40 GVB |
17 | #include <linux/ctype.h> |
18 | #include <linux/types.h> | |
64dbbd40 | 19 | #include <asm/global_data.h> |
16b80c93 | 20 | #include <asm/unaligned.h> |
b08c8c48 | 21 | #include <linux/libfdt.h> |
64dbbd40 | 22 | #include <fdt_support.h> |
151c8b09 | 23 | #include <exports.h> |
a0ae380b | 24 | #include <fdtdec.h> |
622ecee9 | 25 | #include <version.h> |
efe1ceec DT |
26 | #include <video.h> |
27 | ||
28 | DECLARE_GLOBAL_DATA_PTR; | |
64dbbd40 | 29 | |
94fb182c AG |
30 | /** |
31 | * fdt_getprop_u32_default_node - Return a node's property or a default | |
32 | * | |
33 | * @fdt: ptr to device tree | |
34 | * @off: offset of node | |
35 | * @cell: cell offset in property | |
36 | * @prop: property name | |
37 | * @dflt: default value if the property isn't found | |
38 | * | |
39 | * Convenience function to return a node's property or a default value if | |
40 | * the property doesn't exist. | |
41 | */ | |
42 | u32 fdt_getprop_u32_default_node(const void *fdt, int off, int cell, | |
43 | const char *prop, const u32 dflt) | |
44 | { | |
45 | const fdt32_t *val; | |
46 | int len; | |
47 | ||
48 | val = fdt_getprop(fdt, off, prop, &len); | |
49 | ||
50 | /* Check if property exists */ | |
51 | if (!val) | |
52 | return dflt; | |
53 | ||
54 | /* Check if property is long enough */ | |
55 | if (len < ((cell + 1) * sizeof(uint32_t))) | |
56 | return dflt; | |
57 | ||
58 | return fdt32_to_cpu(*val); | |
59 | } | |
60 | ||
3bed2aaf KG |
61 | /** |
62 | * fdt_getprop_u32_default - Find a node and return it's property or a default | |
63 | * | |
64 | * @fdt: ptr to device tree | |
65 | * @path: path of node | |
66 | * @prop: property name | |
67 | * @dflt: default value if the property isn't found | |
68 | * | |
69 | * Convenience function to find a node and return it's property or a | |
70 | * default value if it doesn't exist. | |
71 | */ | |
07e12784 GB |
72 | u32 fdt_getprop_u32_default(const void *fdt, const char *path, |
73 | const char *prop, const u32 dflt) | |
3bed2aaf | 74 | { |
3bed2aaf KG |
75 | int off; |
76 | ||
77 | off = fdt_path_offset(fdt, path); | |
78 | if (off < 0) | |
79 | return dflt; | |
80 | ||
94fb182c | 81 | return fdt_getprop_u32_default_node(fdt, off, 0, prop, dflt); |
3bed2aaf | 82 | } |
64dbbd40 | 83 | |
a3c2933e KG |
84 | /** |
85 | * fdt_find_and_setprop: Find a node and set it's property | |
86 | * | |
87 | * @fdt: ptr to device tree | |
88 | * @node: path of node | |
89 | * @prop: property name | |
90 | * @val: ptr to new value | |
91 | * @len: length of new property value | |
92 | * @create: flag to create the property if it doesn't exist | |
93 | * | |
94 | * Convenience function to directly set a property given the path to the node. | |
95 | */ | |
96 | int fdt_find_and_setprop(void *fdt, const char *node, const char *prop, | |
97 | const void *val, int len, int create) | |
98 | { | |
8d04f02f | 99 | int nodeoff = fdt_path_offset(fdt, node); |
a3c2933e KG |
100 | |
101 | if (nodeoff < 0) | |
102 | return nodeoff; | |
103 | ||
8aa5ec6e | 104 | if ((!create) && (fdt_get_property(fdt, nodeoff, prop, NULL) == NULL)) |
a3c2933e KG |
105 | return 0; /* create flag not set; so exit quietly */ |
106 | ||
107 | return fdt_setprop(fdt, nodeoff, prop, val, len); | |
108 | } | |
109 | ||
8edb2192 | 110 | /** |
a9e8e291 SG |
111 | * fdt_find_or_add_subnode() - find or possibly add a subnode of a given node |
112 | * | |
8edb2192 MY |
113 | * @fdt: pointer to the device tree blob |
114 | * @parentoffset: structure block offset of a node | |
115 | * @name: name of the subnode to locate | |
116 | * | |
117 | * fdt_subnode_offset() finds a subnode of the node with a given name. | |
118 | * If the subnode does not exist, it will be created. | |
119 | */ | |
a9e8e291 | 120 | int fdt_find_or_add_subnode(void *fdt, int parentoffset, const char *name) |
8edb2192 MY |
121 | { |
122 | int offset; | |
123 | ||
124 | offset = fdt_subnode_offset(fdt, parentoffset, name); | |
125 | ||
126 | if (offset == -FDT_ERR_NOTFOUND) | |
127 | offset = fdt_add_subnode(fdt, parentoffset, name); | |
128 | ||
129 | if (offset < 0) | |
130 | printf("%s: %s: %s\n", __func__, name, fdt_strerror(offset)); | |
131 | ||
132 | return offset; | |
133 | } | |
134 | ||
e036a1d2 | 135 | #if defined(CONFIG_OF_STDOUT_VIA_ALIAS) && defined(CONFIG_CONS_INDEX) |
40777812 | 136 | static int fdt_fixup_stdout(void *fdt, int chosenoff) |
151c8b09 | 137 | { |
972f2a89 MY |
138 | int err; |
139 | int aliasoff; | |
151c8b09 | 140 | char sername[9] = { 0 }; |
972f2a89 MY |
141 | const void *path; |
142 | int len; | |
143 | char tmp[256]; /* long enough */ | |
151c8b09 | 144 | |
9f29aeb8 | 145 | sprintf(sername, "serial%d", CONFIG_CONS_INDEX - 1); |
151c8b09 | 146 | |
972f2a89 MY |
147 | aliasoff = fdt_path_offset(fdt, "/aliases"); |
148 | if (aliasoff < 0) { | |
149 | err = aliasoff; | |
da77c819 | 150 | goto noalias; |
151c8b09 | 151 | } |
972f2a89 MY |
152 | |
153 | path = fdt_getprop(fdt, aliasoff, sername, &len); | |
154 | if (!path) { | |
155 | err = len; | |
da77c819 | 156 | goto noalias; |
972f2a89 MY |
157 | } |
158 | ||
159 | /* fdt_setprop may break "path" so we copy it to tmp buffer */ | |
160 | memcpy(tmp, path, len); | |
161 | ||
162 | err = fdt_setprop(fdt, chosenoff, "linux,stdout-path", tmp, len); | |
151c8b09 KG |
163 | if (err < 0) |
164 | printf("WARNING: could not set linux,stdout-path %s.\n", | |
972f2a89 | 165 | fdt_strerror(err)); |
151c8b09 KG |
166 | |
167 | return err; | |
da77c819 SW |
168 | |
169 | noalias: | |
170 | printf("WARNING: %s: could not read %s alias: %s\n", | |
171 | __func__, sername, fdt_strerror(err)); | |
172 | ||
173 | return 0; | |
151c8b09 | 174 | } |
972f2a89 MY |
175 | #else |
176 | static int fdt_fixup_stdout(void *fdt, int chosenoff) | |
177 | { | |
178 | return 0; | |
179 | } | |
151c8b09 KG |
180 | #endif |
181 | ||
f18295d3 MY |
182 | static inline int fdt_setprop_uxx(void *fdt, int nodeoffset, const char *name, |
183 | uint64_t val, int is_u64) | |
184 | { | |
185 | if (is_u64) | |
186 | return fdt_setprop_u64(fdt, nodeoffset, name, val); | |
187 | else | |
188 | return fdt_setprop_u32(fdt, nodeoffset, name, (uint32_t)val); | |
189 | } | |
190 | ||
10be5b5d PK |
191 | int fdt_root(void *fdt) |
192 | { | |
193 | char *serial; | |
194 | int err; | |
195 | ||
196 | err = fdt_check_header(fdt); | |
197 | if (err < 0) { | |
198 | printf("fdt_root: %s\n", fdt_strerror(err)); | |
199 | return err; | |
200 | } | |
201 | ||
00caae6d | 202 | serial = env_get("serial#"); |
10be5b5d PK |
203 | if (serial) { |
204 | err = fdt_setprop(fdt, 0, "serial-number", serial, | |
205 | strlen(serial) + 1); | |
206 | ||
207 | if (err < 0) { | |
208 | printf("WARNING: could not set serial-number %s.\n", | |
209 | fdt_strerror(err)); | |
210 | return err; | |
211 | } | |
212 | } | |
213 | ||
214 | return 0; | |
215 | } | |
f18295d3 | 216 | |
dbe963ae | 217 | int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end) |
64dbbd40 | 218 | { |
f18295d3 | 219 | int nodeoffset; |
2a1a2cb6 | 220 | int err, j, total; |
f18295d3 | 221 | int is_u64; |
2a1a2cb6 | 222 | uint64_t addr, size; |
64dbbd40 | 223 | |
50babaf8 MY |
224 | /* just return if the size of initrd is zero */ |
225 | if (initrd_start == initrd_end) | |
226 | return 0; | |
227 | ||
8edb2192 MY |
228 | /* find or create "/chosen" node. */ |
229 | nodeoffset = fdt_find_or_add_subnode(fdt, 0, "chosen"); | |
230 | if (nodeoffset < 0) | |
2a1a2cb6 | 231 | return nodeoffset; |
64dbbd40 | 232 | |
2a1a2cb6 KG |
233 | total = fdt_num_mem_rsv(fdt); |
234 | ||
235 | /* | |
236 | * Look for an existing entry and update it. If we don't find | |
237 | * the entry, we will j be the next available slot. | |
238 | */ | |
239 | for (j = 0; j < total; j++) { | |
240 | err = fdt_get_mem_rsv(fdt, j, &addr, &size); | |
241 | if (addr == initrd_start) { | |
242 | fdt_del_mem_rsv(fdt, j); | |
243 | break; | |
c28abb9c | 244 | } |
2a1a2cb6 | 245 | } |
8d04f02f | 246 | |
ce6b27a8 | 247 | err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start); |
2a1a2cb6 KG |
248 | if (err < 0) { |
249 | printf("fdt_initrd: %s\n", fdt_strerror(err)); | |
250 | return err; | |
251 | } | |
252 | ||
933cdbb4 | 253 | is_u64 = (fdt_address_cells(fdt, 0) == 2); |
f18295d3 MY |
254 | |
255 | err = fdt_setprop_uxx(fdt, nodeoffset, "linux,initrd-start", | |
256 | (uint64_t)initrd_start, is_u64); | |
f77a606a | 257 | |
dbe963ae MY |
258 | if (err < 0) { |
259 | printf("WARNING: could not set linux,initrd-start %s.\n", | |
260 | fdt_strerror(err)); | |
261 | return err; | |
262 | } | |
f18295d3 MY |
263 | |
264 | err = fdt_setprop_uxx(fdt, nodeoffset, "linux,initrd-end", | |
265 | (uint64_t)initrd_end, is_u64); | |
266 | ||
dbe963ae MY |
267 | if (err < 0) { |
268 | printf("WARNING: could not set linux,initrd-end %s.\n", | |
269 | fdt_strerror(err)); | |
2a1a2cb6 | 270 | |
dbe963ae | 271 | return err; |
64dbbd40 GVB |
272 | } |
273 | ||
2a1a2cb6 KG |
274 | return 0; |
275 | } | |
276 | ||
f0b21ebd NM |
277 | /** |
278 | * board_fdt_chosen_bootargs - boards may override this function to use | |
279 | * alternative kernel command line arguments | |
280 | */ | |
281 | __weak char *board_fdt_chosen_bootargs(void) | |
282 | { | |
283 | return env_get("bootargs"); | |
284 | } | |
285 | ||
bc6ed0f9 | 286 | int fdt_chosen(void *fdt) |
2a1a2cb6 | 287 | { |
6dca1d9a | 288 | struct abuf buf = {}; |
2a1a2cb6 KG |
289 | int nodeoffset; |
290 | int err; | |
291 | char *str; /* used to set string properties */ | |
2a1a2cb6 KG |
292 | |
293 | err = fdt_check_header(fdt); | |
294 | if (err < 0) { | |
295 | printf("fdt_chosen: %s\n", fdt_strerror(err)); | |
296 | return err; | |
297 | } | |
298 | ||
8edb2192 MY |
299 | /* find or create "/chosen" node. */ |
300 | nodeoffset = fdt_find_or_add_subnode(fdt, 0, "chosen"); | |
301 | if (nodeoffset < 0) | |
302 | return nodeoffset; | |
64dbbd40 | 303 | |
6dca1d9a RV |
304 | if (IS_ENABLED(CONFIG_BOARD_RNG_SEED) && !board_rng_seed(&buf)) { |
305 | err = fdt_setprop(fdt, nodeoffset, "rng-seed", | |
306 | abuf_data(&buf), abuf_size(&buf)); | |
307 | abuf_uninit(&buf); | |
308 | if (err < 0) { | |
309 | printf("WARNING: could not set rng-seed %s.\n", | |
310 | fdt_strerror(err)); | |
311 | return err; | |
312 | } | |
313 | } | |
314 | ||
f0b21ebd NM |
315 | str = board_fdt_chosen_bootargs(); |
316 | ||
972f2a89 MY |
317 | if (str) { |
318 | err = fdt_setprop(fdt, nodeoffset, "bootargs", str, | |
319 | strlen(str) + 1); | |
320 | if (err < 0) { | |
bc6ed0f9 MY |
321 | printf("WARNING: could not set bootargs %s.\n", |
322 | fdt_strerror(err)); | |
972f2a89 MY |
323 | return err; |
324 | } | |
64dbbd40 | 325 | } |
2a1a2cb6 | 326 | |
622ecee9 FD |
327 | /* add u-boot version */ |
328 | err = fdt_setprop(fdt, nodeoffset, "u-boot,version", PLAIN_VERSION, | |
329 | strlen(PLAIN_VERSION) + 1); | |
330 | if (err < 0) { | |
331 | printf("WARNING: could not set u-boot,version %s.\n", | |
332 | fdt_strerror(err)); | |
333 | return err; | |
334 | } | |
335 | ||
972f2a89 | 336 | return fdt_fixup_stdout(fdt, nodeoffset); |
64dbbd40 GVB |
337 | } |
338 | ||
e93becf8 KG |
339 | void do_fixup_by_path(void *fdt, const char *path, const char *prop, |
340 | const void *val, int len, int create) | |
341 | { | |
342 | #if defined(DEBUG) | |
343 | int i; | |
d9ad115b | 344 | debug("Updating property '%s/%s' = ", path, prop); |
e93becf8 KG |
345 | for (i = 0; i < len; i++) |
346 | debug(" %.2x", *(u8*)(val+i)); | |
347 | debug("\n"); | |
348 | #endif | |
349 | int rc = fdt_find_and_setprop(fdt, path, prop, val, len, create); | |
350 | if (rc) | |
351 | printf("Unable to update property %s:%s, err=%s\n", | |
352 | path, prop, fdt_strerror(rc)); | |
353 | } | |
354 | ||
355 | void do_fixup_by_path_u32(void *fdt, const char *path, const char *prop, | |
356 | u32 val, int create) | |
357 | { | |
8aa5ec6e KP |
358 | fdt32_t tmp = cpu_to_fdt32(val); |
359 | do_fixup_by_path(fdt, path, prop, &tmp, sizeof(tmp), create); | |
e93becf8 KG |
360 | } |
361 | ||
9eb77cea KG |
362 | void do_fixup_by_prop(void *fdt, |
363 | const char *pname, const void *pval, int plen, | |
364 | const char *prop, const void *val, int len, | |
365 | int create) | |
366 | { | |
367 | int off; | |
368 | #if defined(DEBUG) | |
369 | int i; | |
d9ad115b | 370 | debug("Updating property '%s' = ", prop); |
9eb77cea KG |
371 | for (i = 0; i < len; i++) |
372 | debug(" %.2x", *(u8*)(val+i)); | |
373 | debug("\n"); | |
374 | #endif | |
375 | off = fdt_node_offset_by_prop_value(fdt, -1, pname, pval, plen); | |
376 | while (off != -FDT_ERR_NOTFOUND) { | |
8aa5ec6e | 377 | if (create || (fdt_get_property(fdt, off, prop, NULL) != NULL)) |
9eb77cea KG |
378 | fdt_setprop(fdt, off, prop, val, len); |
379 | off = fdt_node_offset_by_prop_value(fdt, off, pname, pval, plen); | |
380 | } | |
381 | } | |
382 | ||
383 | void do_fixup_by_prop_u32(void *fdt, | |
384 | const char *pname, const void *pval, int plen, | |
385 | const char *prop, u32 val, int create) | |
386 | { | |
8aa5ec6e KP |
387 | fdt32_t tmp = cpu_to_fdt32(val); |
388 | do_fixup_by_prop(fdt, pname, pval, plen, prop, &tmp, 4, create); | |
9eb77cea KG |
389 | } |
390 | ||
391 | void do_fixup_by_compat(void *fdt, const char *compat, | |
392 | const char *prop, const void *val, int len, int create) | |
393 | { | |
394 | int off = -1; | |
395 | #if defined(DEBUG) | |
396 | int i; | |
d9ad115b | 397 | debug("Updating property '%s' = ", prop); |
9eb77cea KG |
398 | for (i = 0; i < len; i++) |
399 | debug(" %.2x", *(u8*)(val+i)); | |
400 | debug("\n"); | |
401 | #endif | |
3058e283 | 402 | fdt_for_each_node_by_compatible(off, fdt, -1, compat) |
8aa5ec6e | 403 | if (create || (fdt_get_property(fdt, off, prop, NULL) != NULL)) |
9eb77cea | 404 | fdt_setprop(fdt, off, prop, val, len); |
9eb77cea KG |
405 | } |
406 | ||
407 | void do_fixup_by_compat_u32(void *fdt, const char *compat, | |
408 | const char *prop, u32 val, int create) | |
409 | { | |
8aa5ec6e KP |
410 | fdt32_t tmp = cpu_to_fdt32(val); |
411 | do_fixup_by_compat(fdt, compat, prop, &tmp, 4, create); | |
9eb77cea KG |
412 | } |
413 | ||
63c09417 | 414 | #ifdef CONFIG_ARCH_FIXUP_FDT_MEMORY |
739a01ed MY |
415 | /* |
416 | * fdt_pack_reg - pack address and size array into the "reg"-suitable stream | |
417 | */ | |
41f09bbe SG |
418 | static int fdt_pack_reg(const void *fdt, void *buf, u64 *address, u64 *size, |
419 | int n) | |
739a01ed MY |
420 | { |
421 | int i; | |
ffccb84c HG |
422 | int address_cells = fdt_address_cells(fdt, 0); |
423 | int size_cells = fdt_size_cells(fdt, 0); | |
739a01ed MY |
424 | char *p = buf; |
425 | ||
426 | for (i = 0; i < n; i++) { | |
ffccb84c | 427 | if (address_cells == 2) |
16b80c93 | 428 | put_unaligned_be64(address[i], p); |
739a01ed MY |
429 | else |
430 | *(fdt32_t *)p = cpu_to_fdt32(address[i]); | |
ffccb84c | 431 | p += 4 * address_cells; |
739a01ed | 432 | |
ffccb84c | 433 | if (size_cells == 2) |
16b80c93 | 434 | put_unaligned_be64(size[i], p); |
739a01ed MY |
435 | else |
436 | *(fdt32_t *)p = cpu_to_fdt32(size[i]); | |
ffccb84c | 437 | p += 4 * size_cells; |
739a01ed MY |
438 | } |
439 | ||
440 | return p - (char *)buf; | |
441 | } | |
442 | ||
6b6f216f RF |
443 | #if CONFIG_NR_DRAM_BANKS > 4 |
444 | #define MEMORY_BANKS_MAX CONFIG_NR_DRAM_BANKS | |
445 | #else | |
8aa5ec6e | 446 | #define MEMORY_BANKS_MAX 4 |
6b6f216f | 447 | #endif |
5e1a3be6 MS |
448 | |
449 | /** | |
450 | * fdt_fixup_memory_banks - Update DT memory node | |
451 | * @blob: Pointer to DT blob | |
452 | * @start: Pointer to memory start addresses array | |
453 | * @size: Pointer to memory sizes array | |
454 | * @banks: Number of memory banks | |
455 | * | |
456 | * Return: 0 on success, negative value on failure | |
457 | * | |
458 | * Based on the passed number of banks and arrays, the function is able to | |
459 | * update existing DT memory nodes to match run time detected/changed memory | |
460 | * configuration. Implementation is handling one specific case with only one | |
461 | * memory node where multiple tuples could be added/updated. | |
462 | * The case where multiple memory nodes with a single tuple (base, size) are | |
463 | * used, this function is only updating the first memory node without removing | |
464 | * others. | |
465 | */ | |
a6bd9e83 JR |
466 | int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks) |
467 | { | |
468 | int err, nodeoffset; | |
6d29cc7d | 469 | int len, i; |
8aa5ec6e | 470 | u8 tmp[MEMORY_BANKS_MAX * 16]; /* Up to 64-bit address + 64-bit size */ |
3c927281 | 471 | |
8aa5ec6e KP |
472 | if (banks > MEMORY_BANKS_MAX) { |
473 | printf("%s: num banks %d exceeds hardcoded limit %d." | |
474 | " Recompile with higher MEMORY_BANKS_MAX?\n", | |
475 | __FUNCTION__, banks, MEMORY_BANKS_MAX); | |
476 | return -1; | |
477 | } | |
478 | ||
3c927281 KG |
479 | err = fdt_check_header(blob); |
480 | if (err < 0) { | |
481 | printf("%s: %s\n", __FUNCTION__, fdt_strerror(err)); | |
482 | return err; | |
483 | } | |
484 | ||
8edb2192 MY |
485 | /* find or create "/memory" node. */ |
486 | nodeoffset = fdt_find_or_add_subnode(blob, 0, "memory"); | |
487 | if (nodeoffset < 0) | |
35940de1 | 488 | return nodeoffset; |
8edb2192 | 489 | |
3c927281 KG |
490 | err = fdt_setprop(blob, nodeoffset, "device_type", "memory", |
491 | sizeof("memory")); | |
492 | if (err < 0) { | |
493 | printf("WARNING: could not set %s %s.\n", "device_type", | |
494 | fdt_strerror(err)); | |
495 | return err; | |
496 | } | |
497 | ||
ed5af03f TR |
498 | for (i = 0; i < banks; i++) { |
499 | if (start[i] == 0 && size[i] == 0) | |
500 | break; | |
501 | } | |
502 | ||
503 | banks = i; | |
504 | ||
5c1cf89f AP |
505 | if (!banks) |
506 | return 0; | |
507 | ||
739a01ed | 508 | len = fdt_pack_reg(blob, tmp, start, size, banks); |
3c927281 KG |
509 | |
510 | err = fdt_setprop(blob, nodeoffset, "reg", tmp, len); | |
511 | if (err < 0) { | |
512 | printf("WARNING: could not set %s %s.\n", | |
513 | "reg", fdt_strerror(err)); | |
514 | return err; | |
515 | } | |
516 | return 0; | |
517 | } | |
949b5a96 IO |
518 | |
519 | int fdt_set_usable_memory(void *blob, u64 start[], u64 size[], int areas) | |
520 | { | |
521 | int err, nodeoffset; | |
522 | int len; | |
523 | u8 tmp[8 * 16]; /* Up to 64-bit address + 64-bit size */ | |
524 | ||
525 | if (areas > 8) { | |
526 | printf("%s: num areas %d exceeds hardcoded limit %d\n", | |
527 | __func__, areas, 8); | |
528 | return -1; | |
529 | } | |
530 | ||
531 | err = fdt_check_header(blob); | |
532 | if (err < 0) { | |
533 | printf("%s: %s\n", __func__, fdt_strerror(err)); | |
534 | return err; | |
535 | } | |
536 | ||
537 | /* find or create "/memory" node. */ | |
538 | nodeoffset = fdt_find_or_add_subnode(blob, 0, "memory"); | |
539 | if (nodeoffset < 0) | |
540 | return nodeoffset; | |
541 | ||
542 | len = fdt_pack_reg(blob, tmp, start, size, areas); | |
543 | ||
544 | err = fdt_setprop(blob, nodeoffset, "linux,usable-memory", tmp, len); | |
545 | if (err < 0) { | |
546 | printf("WARNING: could not set %s %s.\n", | |
547 | "reg", fdt_strerror(err)); | |
548 | return err; | |
549 | } | |
550 | ||
551 | return 0; | |
552 | } | |
63c09417 | 553 | #endif |
3c927281 | 554 | |
a6bd9e83 JR |
555 | int fdt_fixup_memory(void *blob, u64 start, u64 size) |
556 | { | |
557 | return fdt_fixup_memory_banks(blob, &start, &size, 1); | |
558 | } | |
559 | ||
ba37aa03 | 560 | void fdt_fixup_ethernet(void *fdt) |
ab544633 | 561 | { |
24acb83d | 562 | int i = 0, j, prop; |
bc393a79 | 563 | char *tmp, *end; |
064d55f8 | 564 | char mac[16]; |
ab544633 | 565 | const char *path; |
a40db6d5 | 566 | unsigned char mac_addr[ARP_HLEN]; |
bc393a79 | 567 | int offset; |
24acb83d PK |
568 | #ifdef FDT_SEQ_MACADDR_FROM_ENV |
569 | int nodeoff; | |
570 | const struct fdt_property *fdt_prop; | |
571 | #endif | |
ab544633 | 572 | |
a434fd1d | 573 | if (fdt_path_offset(fdt, "/aliases") < 0) |
ba37aa03 KG |
574 | return; |
575 | ||
a434fd1d LI |
576 | /* Cycle through all aliases */ |
577 | for (prop = 0; ; prop++) { | |
bc393a79 | 578 | const char *name; |
bc393a79 | 579 | |
a434fd1d LI |
580 | /* FDT might have been edited, recompute the offset */ |
581 | offset = fdt_first_property_offset(fdt, | |
582 | fdt_path_offset(fdt, "/aliases")); | |
583 | /* Select property number 'prop' */ | |
24acb83d | 584 | for (j = 0; j < prop; j++) |
a434fd1d LI |
585 | offset = fdt_next_property_offset(fdt, offset); |
586 | ||
587 | if (offset < 0) | |
588 | break; | |
589 | ||
bc393a79 | 590 | path = fdt_getprop_by_offset(fdt, offset, &name, NULL); |
f8e57c65 TT |
591 | if (!strncmp(name, "ethernet", 8)) { |
592 | /* Treat plain "ethernet" same as "ethernet0". */ | |
24acb83d PK |
593 | if (!strcmp(name, "ethernet") |
594 | #ifdef FDT_SEQ_MACADDR_FROM_ENV | |
595 | || !strcmp(name, "ethernet0") | |
596 | #endif | |
597 | ) | |
f8e57c65 | 598 | i = 0; |
24acb83d | 599 | #ifndef FDT_SEQ_MACADDR_FROM_ENV |
f8e57c65 TT |
600 | else |
601 | i = trailing_strtol(name); | |
24acb83d | 602 | #endif |
bc393a79 BM |
603 | if (i != -1) { |
604 | if (i == 0) | |
605 | strcpy(mac, "ethaddr"); | |
606 | else | |
607 | sprintf(mac, "eth%daddr", i); | |
608 | } else { | |
609 | continue; | |
610 | } | |
24acb83d PK |
611 | #ifdef FDT_SEQ_MACADDR_FROM_ENV |
612 | nodeoff = fdt_path_offset(fdt, path); | |
613 | fdt_prop = fdt_get_property(fdt, nodeoff, "status", | |
614 | NULL); | |
615 | if (fdt_prop && !strcmp(fdt_prop->data, "disabled")) | |
616 | continue; | |
617 | i++; | |
618 | #endif | |
00caae6d | 619 | tmp = env_get(mac); |
bc393a79 BM |
620 | if (!tmp) |
621 | continue; | |
622 | ||
623 | for (j = 0; j < 6; j++) { | |
624 | mac_addr[j] = tmp ? | |
7e5f460e | 625 | hextoul(tmp, &end) : 0; |
bc393a79 BM |
626 | if (tmp) |
627 | tmp = (*end) ? end + 1 : end; | |
628 | } | |
629 | ||
630 | do_fixup_by_path(fdt, path, "mac-address", | |
631 | &mac_addr, 6, 0); | |
632 | do_fixup_by_path(fdt, path, "local-mac-address", | |
633 | &mac_addr, 6, 1); | |
ab544633 | 634 | } |
ab544633 KG |
635 | } |
636 | } | |
18e69a35 | 637 | |
a5af51a7 PT |
638 | int fdt_record_loadable(void *blob, u32 index, const char *name, |
639 | uintptr_t load_addr, u32 size, uintptr_t entry_point, | |
be2d1a87 | 640 | const char *type, const char *os, const char *arch) |
a5af51a7 PT |
641 | { |
642 | int err, node; | |
643 | ||
644 | err = fdt_check_header(blob); | |
645 | if (err < 0) { | |
646 | printf("%s: %s\n", __func__, fdt_strerror(err)); | |
647 | return err; | |
648 | } | |
649 | ||
650 | /* find or create "/fit-images" node */ | |
651 | node = fdt_find_or_add_subnode(blob, 0, "fit-images"); | |
652 | if (node < 0) | |
653 | return node; | |
654 | ||
655 | /* find or create "/fit-images/<name>" node */ | |
656 | node = fdt_find_or_add_subnode(blob, node, name); | |
657 | if (node < 0) | |
658 | return node; | |
659 | ||
13d1ca87 | 660 | fdt_setprop_u64(blob, node, "load", load_addr); |
a5af51a7 | 661 | if (entry_point != -1) |
13d1ca87 | 662 | fdt_setprop_u64(blob, node, "entry", entry_point); |
a5af51a7 PT |
663 | fdt_setprop_u32(blob, node, "size", size); |
664 | if (type) | |
665 | fdt_setprop_string(blob, node, "type", type); | |
666 | if (os) | |
667 | fdt_setprop_string(blob, node, "os", os); | |
be2d1a87 MS |
668 | if (arch) |
669 | fdt_setprop_string(blob, node, "arch", arch); | |
a5af51a7 PT |
670 | |
671 | return node; | |
672 | } | |
673 | ||
ef476836 | 674 | int fdt_shrink_to_minimum(void *blob, uint extrasize) |
3082d234 KG |
675 | { |
676 | int i; | |
677 | uint64_t addr, size; | |
678 | int total, ret; | |
679 | uint actualsize; | |
59bd7968 | 680 | int fdt_memrsv = 0; |
3082d234 KG |
681 | |
682 | if (!blob) | |
683 | return 0; | |
684 | ||
685 | total = fdt_num_mem_rsv(blob); | |
686 | for (i = 0; i < total; i++) { | |
687 | fdt_get_mem_rsv(blob, i, &addr, &size); | |
92549358 | 688 | if (addr == (uintptr_t)blob) { |
3082d234 | 689 | fdt_del_mem_rsv(blob, i); |
59bd7968 | 690 | fdt_memrsv = 1; |
3082d234 KG |
691 | break; |
692 | } | |
693 | } | |
694 | ||
f242a088 PK |
695 | /* |
696 | * Calculate the actual size of the fdt | |
3840ebfa FW |
697 | * plus the size needed for 5 fdt_add_mem_rsv, one |
698 | * for the fdt itself and 4 for a possible initrd | |
699 | * ((initrd-start + initrd-end) * 2 (name & value)) | |
f242a088 | 700 | */ |
3082d234 | 701 | actualsize = fdt_off_dt_strings(blob) + |
3840ebfa | 702 | fdt_size_dt_strings(blob) + 5 * sizeof(struct fdt_reserve_entry); |
3082d234 | 703 | |
ef476836 | 704 | actualsize += extrasize; |
3082d234 | 705 | /* Make it so the fdt ends on a page boundary */ |
92549358 SG |
706 | actualsize = ALIGN(actualsize + ((uintptr_t)blob & 0xfff), 0x1000); |
707 | actualsize = actualsize - ((uintptr_t)blob & 0xfff); | |
3082d234 KG |
708 | |
709 | /* Change the fdt header to reflect the correct size */ | |
710 | fdt_set_totalsize(blob, actualsize); | |
711 | ||
59bd7968 SG |
712 | if (fdt_memrsv) { |
713 | /* Add the new reservation */ | |
714 | ret = fdt_add_mem_rsv(blob, map_to_sysmem(blob), actualsize); | |
715 | if (ret < 0) | |
716 | return ret; | |
717 | } | |
3082d234 KG |
718 | |
719 | return actualsize; | |
720 | } | |
8ab451c4 | 721 | |
574506c3 MB |
722 | /** |
723 | * fdt_delete_disabled_nodes: Delete all nodes with status == "disabled" | |
724 | * | |
725 | * @blob: ptr to device tree | |
726 | */ | |
727 | int fdt_delete_disabled_nodes(void *blob) | |
728 | { | |
729 | while (1) { | |
730 | int ret, offset; | |
731 | ||
732 | offset = fdt_node_offset_by_prop_value(blob, -1, "status", | |
733 | "disabled", 9); | |
734 | if (offset < 0) | |
735 | break; | |
736 | ||
737 | ret = fdt_del_node(blob, offset); | |
738 | if (ret < 0) | |
739 | return ret; | |
740 | } | |
741 | ||
742 | return 0; | |
743 | } | |
744 | ||
8ab451c4 | 745 | #ifdef CONFIG_PCI |
ecc8d425 | 746 | #define CFG_SYS_PCI_NR_INBOUND_WIN 4 |
8ab451c4 KG |
747 | |
748 | #define FDT_PCI_PREFETCH (0x40000000) | |
749 | #define FDT_PCI_MEM32 (0x02000000) | |
750 | #define FDT_PCI_IO (0x01000000) | |
751 | #define FDT_PCI_MEM64 (0x03000000) | |
752 | ||
753 | int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose) { | |
754 | ||
755 | int addrcell, sizecell, len, r; | |
756 | u32 *dma_range; | |
757 | /* sized based on pci addr cells, size-cells, & address-cells */ | |
ecc8d425 | 758 | u32 dma_ranges[(3 + 2 + 2) * CFG_SYS_PCI_NR_INBOUND_WIN]; |
8ab451c4 KG |
759 | |
760 | addrcell = fdt_getprop_u32_default(blob, "/", "#address-cells", 1); | |
761 | sizecell = fdt_getprop_u32_default(blob, "/", "#size-cells", 1); | |
762 | ||
763 | dma_range = &dma_ranges[0]; | |
764 | for (r = 0; r < hose->region_count; r++) { | |
765 | u64 bus_start, phys_start, size; | |
766 | ||
ff4e66e9 KG |
767 | /* skip if !PCI_REGION_SYS_MEMORY */ |
768 | if (!(hose->regions[r].flags & PCI_REGION_SYS_MEMORY)) | |
8ab451c4 KG |
769 | continue; |
770 | ||
771 | bus_start = (u64)hose->regions[r].bus_start; | |
772 | phys_start = (u64)hose->regions[r].phys_start; | |
773 | size = (u64)hose->regions[r].size; | |
774 | ||
775 | dma_range[0] = 0; | |
cfd700be | 776 | if (size >= 0x100000000ull) |
867aaf68 | 777 | dma_range[0] |= cpu_to_fdt32(FDT_PCI_MEM64); |
8ab451c4 | 778 | else |
867aaf68 | 779 | dma_range[0] |= cpu_to_fdt32(FDT_PCI_MEM32); |
8ab451c4 | 780 | if (hose->regions[r].flags & PCI_REGION_PREFETCH) |
867aaf68 | 781 | dma_range[0] |= cpu_to_fdt32(FDT_PCI_PREFETCH); |
8ab451c4 | 782 | #ifdef CONFIG_SYS_PCI_64BIT |
867aaf68 | 783 | dma_range[1] = cpu_to_fdt32(bus_start >> 32); |
8ab451c4 KG |
784 | #else |
785 | dma_range[1] = 0; | |
786 | #endif | |
867aaf68 | 787 | dma_range[2] = cpu_to_fdt32(bus_start & 0xffffffff); |
8ab451c4 KG |
788 | |
789 | if (addrcell == 2) { | |
867aaf68 MV |
790 | dma_range[3] = cpu_to_fdt32(phys_start >> 32); |
791 | dma_range[4] = cpu_to_fdt32(phys_start & 0xffffffff); | |
8ab451c4 | 792 | } else { |
867aaf68 | 793 | dma_range[3] = cpu_to_fdt32(phys_start & 0xffffffff); |
8ab451c4 KG |
794 | } |
795 | ||
796 | if (sizecell == 2) { | |
867aaf68 MV |
797 | dma_range[3 + addrcell + 0] = |
798 | cpu_to_fdt32(size >> 32); | |
799 | dma_range[3 + addrcell + 1] = | |
800 | cpu_to_fdt32(size & 0xffffffff); | |
8ab451c4 | 801 | } else { |
867aaf68 MV |
802 | dma_range[3 + addrcell + 0] = |
803 | cpu_to_fdt32(size & 0xffffffff); | |
8ab451c4 KG |
804 | } |
805 | ||
806 | dma_range += (3 + addrcell + sizecell); | |
807 | } | |
808 | ||
809 | len = dma_range - &dma_ranges[0]; | |
810 | if (len) | |
811 | fdt_setprop(blob, phb_off, "dma-ranges", &dma_ranges[0], len*4); | |
812 | ||
813 | return 0; | |
814 | } | |
815 | #endif | |
30d45c0d | 816 | |
cb2707af MM |
817 | int fdt_increase_size(void *fdt, int add_len) |
818 | { | |
819 | int newlen; | |
820 | ||
821 | newlen = fdt_totalsize(fdt) + add_len; | |
822 | ||
823 | /* Open in place with a new len */ | |
824 | return fdt_open_into(fdt, fdt, newlen); | |
825 | } | |
826 | ||
3c950e2e AG |
827 | #ifdef CONFIG_FDT_FIXUP_PARTITIONS |
828 | #include <jffs2/load_kernel.h> | |
829 | #include <mtd_node.h> | |
830 | ||
cd1457d7 | 831 | static int fdt_del_subnodes(const void *blob, int parent_offset) |
3c950e2e AG |
832 | { |
833 | int off, ndepth; | |
834 | int ret; | |
835 | ||
836 | for (ndepth = 0, off = fdt_next_node(blob, parent_offset, &ndepth); | |
837 | (off >= 0) && (ndepth > 0); | |
838 | off = fdt_next_node(blob, off, &ndepth)) { | |
839 | if (ndepth == 1) { | |
840 | debug("delete %s: offset: %x\n", | |
841 | fdt_get_name(blob, off, 0), off); | |
842 | ret = fdt_del_node((void *)blob, off); | |
843 | if (ret < 0) { | |
844 | printf("Can't delete node: %s\n", | |
845 | fdt_strerror(ret)); | |
846 | return ret; | |
847 | } else { | |
848 | ndepth = 0; | |
849 | off = parent_offset; | |
850 | } | |
851 | } | |
852 | } | |
853 | return 0; | |
854 | } | |
855 | ||
cd1457d7 | 856 | static int fdt_del_partitions(void *blob, int parent_offset) |
3c950e2e AG |
857 | { |
858 | const void *prop; | |
859 | int ndepth = 0; | |
860 | int off; | |
861 | int ret; | |
862 | ||
863 | off = fdt_next_node(blob, parent_offset, &ndepth); | |
864 | if (off > 0 && ndepth == 1) { | |
865 | prop = fdt_getprop(blob, off, "label", NULL); | |
866 | if (prop == NULL) { | |
867 | /* | |
868 | * Could not find label property, nand {}; node? | |
869 | * Check subnode, delete partitions there if any. | |
870 | */ | |
871 | return fdt_del_partitions(blob, off); | |
872 | } else { | |
873 | ret = fdt_del_subnodes(blob, parent_offset); | |
874 | if (ret < 0) { | |
875 | printf("Can't remove subnodes: %s\n", | |
876 | fdt_strerror(ret)); | |
877 | return ret; | |
878 | } | |
879 | } | |
880 | } | |
881 | return 0; | |
882 | } | |
883 | ||
8ce8e42e MY |
884 | static int fdt_node_set_part_info(void *blob, int parent_offset, |
885 | struct mtd_device *dev) | |
3c950e2e AG |
886 | { |
887 | struct list_head *pentry; | |
888 | struct part_info *part; | |
3c950e2e AG |
889 | int off, ndepth = 0; |
890 | int part_num, ret; | |
3a9a62a1 | 891 | int sizecell; |
3c950e2e AG |
892 | char buf[64]; |
893 | ||
894 | ret = fdt_del_partitions(blob, parent_offset); | |
895 | if (ret < 0) | |
896 | return ret; | |
897 | ||
3a9a62a1 SM |
898 | /* |
899 | * Check if size/address is 1 or 2 cells. | |
900 | * We assume #address-cells and #size-cells have same value. | |
901 | */ | |
902 | sizecell = fdt_getprop_u32_default_node(blob, parent_offset, | |
903 | 0, "#size-cells", 1); | |
904 | ||
3c950e2e AG |
905 | /* |
906 | * Check if it is nand {}; subnode, adjust | |
907 | * the offset in this case | |
908 | */ | |
909 | off = fdt_next_node(blob, parent_offset, &ndepth); | |
910 | if (off > 0 && ndepth == 1) | |
911 | parent_offset = off; | |
912 | ||
913 | part_num = 0; | |
914 | list_for_each_prev(pentry, &dev->parts) { | |
915 | int newoff; | |
916 | ||
917 | part = list_entry(pentry, struct part_info, link); | |
918 | ||
06503f16 | 919 | debug("%2d: %-20s0x%08llx\t0x%08llx\t%d\n", |
3c950e2e AG |
920 | part_num, part->name, part->size, |
921 | part->offset, part->mask_flags); | |
922 | ||
06503f16 | 923 | sprintf(buf, "partition@%llx", part->offset); |
3c950e2e AG |
924 | add_sub: |
925 | ret = fdt_add_subnode(blob, parent_offset, buf); | |
926 | if (ret == -FDT_ERR_NOSPACE) { | |
927 | ret = fdt_increase_size(blob, 512); | |
928 | if (!ret) | |
929 | goto add_sub; | |
930 | else | |
931 | goto err_size; | |
932 | } else if (ret < 0) { | |
933 | printf("Can't add partition node: %s\n", | |
934 | fdt_strerror(ret)); | |
935 | return ret; | |
936 | } | |
937 | newoff = ret; | |
938 | ||
939 | /* Check MTD_WRITEABLE_CMD flag */ | |
940 | if (part->mask_flags & 1) { | |
941 | add_ro: | |
942 | ret = fdt_setprop(blob, newoff, "read_only", NULL, 0); | |
943 | if (ret == -FDT_ERR_NOSPACE) { | |
944 | ret = fdt_increase_size(blob, 512); | |
945 | if (!ret) | |
946 | goto add_ro; | |
947 | else | |
948 | goto err_size; | |
949 | } else if (ret < 0) | |
950 | goto err_prop; | |
951 | } | |
952 | ||
3c950e2e | 953 | add_reg: |
3a9a62a1 SM |
954 | if (sizecell == 2) { |
955 | ret = fdt_setprop_u64(blob, newoff, | |
956 | "reg", part->offset); | |
957 | if (!ret) | |
958 | ret = fdt_appendprop_u64(blob, newoff, | |
959 | "reg", part->size); | |
960 | } else { | |
961 | ret = fdt_setprop_u32(blob, newoff, | |
962 | "reg", part->offset); | |
963 | if (!ret) | |
964 | ret = fdt_appendprop_u32(blob, newoff, | |
965 | "reg", part->size); | |
966 | } | |
967 | ||
3c950e2e AG |
968 | if (ret == -FDT_ERR_NOSPACE) { |
969 | ret = fdt_increase_size(blob, 512); | |
970 | if (!ret) | |
971 | goto add_reg; | |
972 | else | |
973 | goto err_size; | |
974 | } else if (ret < 0) | |
975 | goto err_prop; | |
976 | ||
977 | add_label: | |
978 | ret = fdt_setprop_string(blob, newoff, "label", part->name); | |
979 | if (ret == -FDT_ERR_NOSPACE) { | |
980 | ret = fdt_increase_size(blob, 512); | |
981 | if (!ret) | |
982 | goto add_label; | |
983 | else | |
984 | goto err_size; | |
985 | } else if (ret < 0) | |
986 | goto err_prop; | |
987 | ||
988 | part_num++; | |
989 | } | |
990 | return 0; | |
991 | err_size: | |
992 | printf("Can't increase blob size: %s\n", fdt_strerror(ret)); | |
993 | return ret; | |
994 | err_prop: | |
995 | printf("Can't add property: %s\n", fdt_strerror(ret)); | |
996 | return ret; | |
997 | } | |
998 | ||
999 | /* | |
1000 | * Update partitions in nor/nand nodes using info from | |
1001 | * mtdparts environment variable. The nodes to update are | |
1002 | * specified by node_info structure which contains mtd device | |
1003 | * type and compatible string: E. g. the board code in | |
1004 | * ft_board_setup() could use: | |
1005 | * | |
1006 | * struct node_info nodes[] = { | |
1007 | * { "fsl,mpc5121-nfc", MTD_DEV_TYPE_NAND, }, | |
1008 | * { "cfi-flash", MTD_DEV_TYPE_NOR, }, | |
1009 | * }; | |
1010 | * | |
1011 | * fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes)); | |
1012 | */ | |
5f4e32d0 MY |
1013 | void fdt_fixup_mtdparts(void *blob, const struct node_info *node_info, |
1014 | int node_info_size) | |
3c950e2e | 1015 | { |
3c950e2e | 1016 | struct mtd_device *dev; |
3c950e2e | 1017 | int i, idx; |
36fee2f7 | 1018 | int noff, parts; |
53a89664 | 1019 | bool inited = false; |
3c950e2e AG |
1020 | |
1021 | for (i = 0; i < node_info_size; i++) { | |
1022 | idx = 0; | |
7d8073e7 | 1023 | |
3058e283 MB |
1024 | fdt_for_each_node_by_compatible(noff, blob, -1, |
1025 | node_info[i].compat) { | |
7d8073e7 MY |
1026 | const char *prop; |
1027 | ||
1028 | prop = fdt_getprop(blob, noff, "status", NULL); | |
1029 | if (prop && !strcmp(prop, "disabled")) | |
1030 | continue; | |
1031 | ||
3c950e2e AG |
1032 | debug("%s: %s, mtd dev type %d\n", |
1033 | fdt_get_name(blob, noff, 0), | |
5f4e32d0 | 1034 | node_info[i].compat, node_info[i].type); |
53a89664 MY |
1035 | |
1036 | if (!inited) { | |
1037 | if (mtdparts_init() != 0) | |
1038 | return; | |
1039 | inited = true; | |
1040 | } | |
1041 | ||
5f4e32d0 | 1042 | dev = device_find(node_info[i].type, idx++); |
3c950e2e | 1043 | if (dev) { |
36fee2f7 MS |
1044 | parts = fdt_subnode_offset(blob, noff, |
1045 | "partitions"); | |
1046 | if (parts < 0) | |
1047 | parts = noff; | |
1048 | ||
1049 | if (fdt_node_set_part_info(blob, parts, dev)) | |
3c950e2e AG |
1050 | return; /* return on error */ |
1051 | } | |
3c950e2e AG |
1052 | } |
1053 | } | |
1054 | } | |
1055 | #endif | |
49b97d9c | 1056 | |
163c5f60 PD |
1057 | int fdt_copy_fixed_partitions(void *blob) |
1058 | { | |
1059 | ofnode node, subnode; | |
1060 | int off, suboff, res; | |
1061 | char path[256]; | |
1062 | int address_cells, size_cells; | |
1063 | u8 i, j, child_count; | |
1064 | ||
1065 | node = ofnode_by_compatible(ofnode_null(), "fixed-partitions"); | |
1066 | while (ofnode_valid(node)) { | |
1067 | /* copy the U-Boot fixed partition */ | |
1068 | address_cells = ofnode_read_simple_addr_cells(node); | |
1069 | size_cells = ofnode_read_simple_size_cells(node); | |
1070 | ||
1071 | res = ofnode_get_path(ofnode_get_parent(node), path, sizeof(path)); | |
1072 | if (res) | |
1073 | return res; | |
1074 | ||
1075 | off = fdt_path_offset(blob, path); | |
1076 | if (off < 0) | |
1077 | return -ENODEV; | |
1078 | ||
1079 | off = fdt_find_or_add_subnode(blob, off, "partitions"); | |
1080 | res = fdt_setprop_string(blob, off, "compatible", "fixed-partitions"); | |
1081 | if (res) | |
1082 | return res; | |
1083 | ||
1084 | res = fdt_setprop_u32(blob, off, "#address-cells", address_cells); | |
1085 | if (res) | |
1086 | return res; | |
1087 | ||
1088 | res = fdt_setprop_u32(blob, off, "#size-cells", size_cells); | |
1089 | if (res) | |
1090 | return res; | |
1091 | ||
1092 | /* | |
1093 | * parse partition in reverse order as fdt_find_or_add_subnode() only | |
1094 | * insert the new node after the parent's properties | |
1095 | */ | |
1096 | child_count = ofnode_get_child_count(node); | |
1097 | for (i = child_count; i > 0 ; i--) { | |
1098 | subnode = ofnode_first_subnode(node); | |
1099 | if (!ofnode_valid(subnode)) | |
1100 | break; | |
1101 | ||
1102 | for (j = 0; (j < i - 1); j++) | |
1103 | subnode = ofnode_next_subnode(subnode); | |
1104 | ||
1105 | if (!ofnode_valid(subnode)) | |
1106 | break; | |
1107 | ||
1108 | const u32 *reg; | |
1109 | int len; | |
1110 | ||
1111 | suboff = fdt_find_or_add_subnode(blob, off, ofnode_get_name(subnode)); | |
1112 | res = fdt_setprop_string(blob, suboff, "label", | |
1113 | ofnode_read_string(subnode, "label")); | |
1114 | if (res) | |
1115 | return res; | |
1116 | ||
1117 | reg = ofnode_get_property(subnode, "reg", &len); | |
1118 | res = fdt_setprop(blob, suboff, "reg", reg, len); | |
1119 | if (res) | |
1120 | return res; | |
1121 | } | |
1122 | ||
1123 | /* go to next fixed-partitions node */ | |
1124 | node = ofnode_by_compatible(node, "fixed-partitions"); | |
1125 | } | |
1126 | ||
1127 | return 0; | |
1128 | } | |
1129 | ||
49b97d9c KG |
1130 | void fdt_del_node_and_alias(void *blob, const char *alias) |
1131 | { | |
1132 | int off = fdt_path_offset(blob, alias); | |
1133 | ||
1134 | if (off < 0) | |
1135 | return; | |
1136 | ||
1137 | fdt_del_node(blob, off); | |
1138 | ||
1139 | off = fdt_path_offset(blob, "/aliases"); | |
1140 | fdt_delprop(blob, off, alias); | |
1141 | } | |
a0342c08 | 1142 | |
a0342c08 KG |
1143 | /* Max address size we deal with */ |
1144 | #define OF_MAX_ADDR_CELLS 4 | |
a47abd7b DB |
1145 | #define OF_CHECK_COUNTS(na, ns) ((na) > 0 && (na) <= OF_MAX_ADDR_CELLS && \ |
1146 | (ns) > 0) | |
a0342c08 KG |
1147 | |
1148 | /* Debug utility */ | |
1149 | #ifdef DEBUG | |
8aa5ec6e | 1150 | static void of_dump_addr(const char *s, const fdt32_t *addr, int na) |
a0342c08 KG |
1151 | { |
1152 | printf("%s", s); | |
1153 | while(na--) | |
1154 | printf(" %08x", *(addr++)); | |
1155 | printf("\n"); | |
1156 | } | |
1157 | #else | |
8aa5ec6e | 1158 | static void of_dump_addr(const char *s, const fdt32_t *addr, int na) { } |
a0342c08 KG |
1159 | #endif |
1160 | ||
0a222d53 PB |
1161 | /** |
1162 | * struct of_bus - Callbacks for bus specific translators | |
49717b18 PB |
1163 | * @name: A string used to identify this bus in debug output. |
1164 | * @addresses: The name of the DT property from which addresses are | |
1165 | * to be read, typically "reg". | |
0a222d53 PB |
1166 | * @match: Return non-zero if the node whose parent is at |
1167 | * parentoffset in the FDT blob corresponds to a bus | |
1168 | * of this type, otherwise return zero. If NULL a match | |
1169 | * is assumed. | |
49717b18 PB |
1170 | * @count_cells:Count how many cells (be32 values) a node whose parent |
1171 | * is at parentoffset in the FDT blob will require to | |
1172 | * represent its address (written to *addrc) & size | |
1173 | * (written to *sizec). | |
1174 | * @map: Map the address addr from the address space of this | |
1175 | * bus to that of its parent, making use of the ranges | |
1176 | * read from DT to an array at range. na and ns are the | |
1177 | * number of cells (be32 values) used to hold and address | |
1178 | * or size, respectively, for this bus. pna is the number | |
1179 | * of cells used to hold an address for the parent bus. | |
1180 | * Returns the address in the address space of the parent | |
1181 | * bus. | |
1182 | * @translate: Update the value of the address cells at addr within an | |
1183 | * FDT by adding offset to it. na specifies the number of | |
1184 | * cells used to hold the address being translated. Returns | |
1185 | * zero on success, non-zero on error. | |
0a222d53 PB |
1186 | * |
1187 | * Each bus type will include a struct of_bus in the of_busses array, | |
1188 | * providing implementations of some or all of the functions used to | |
1189 | * match the bus & handle address translation for its children. | |
1190 | */ | |
a0342c08 KG |
1191 | struct of_bus { |
1192 | const char *name; | |
1193 | const char *addresses; | |
11e44fc6 SW |
1194 | int (*match)(const void *blob, int parentoffset); |
1195 | void (*count_cells)(const void *blob, int parentoffset, | |
a0342c08 | 1196 | int *addrc, int *sizec); |
8aa5ec6e | 1197 | u64 (*map)(fdt32_t *addr, const fdt32_t *range, |
a0342c08 | 1198 | int na, int ns, int pna); |
8aa5ec6e | 1199 | int (*translate)(fdt32_t *addr, u64 offset, int na); |
a0342c08 KG |
1200 | }; |
1201 | ||
1202 | /* Default translator (generic bus) */ | |
eed36609 | 1203 | void fdt_support_default_count_cells(const void *blob, int parentoffset, |
a0342c08 KG |
1204 | int *addrc, int *sizec) |
1205 | { | |
8aa5ec6e | 1206 | const fdt32_t *prop; |
6395f318 | 1207 | |
933cdbb4 SG |
1208 | if (addrc) |
1209 | *addrc = fdt_address_cells(blob, parentoffset); | |
6395f318 SW |
1210 | |
1211 | if (sizec) { | |
1212 | prop = fdt_getprop(blob, parentoffset, "#size-cells", NULL); | |
1213 | if (prop) | |
8aa5ec6e | 1214 | *sizec = be32_to_cpup(prop); |
6395f318 SW |
1215 | else |
1216 | *sizec = 1; | |
1217 | } | |
a0342c08 KG |
1218 | } |
1219 | ||
8aa5ec6e | 1220 | static u64 of_bus_default_map(fdt32_t *addr, const fdt32_t *range, |
a0342c08 KG |
1221 | int na, int ns, int pna) |
1222 | { | |
1223 | u64 cp, s, da; | |
1224 | ||
eed36609 SG |
1225 | cp = fdt_read_number(range, na); |
1226 | s = fdt_read_number(range + na + pna, ns); | |
1227 | da = fdt_read_number(addr, na); | |
a0342c08 | 1228 | |
d8e9cf4d | 1229 | debug("OF: default map, cp=%llx, s=%llx, da=%llx\n", cp, s, da); |
a0342c08 KG |
1230 | |
1231 | if (da < cp || da >= (cp + s)) | |
1232 | return OF_BAD_ADDR; | |
1233 | return da - cp; | |
1234 | } | |
1235 | ||
8aa5ec6e | 1236 | static int of_bus_default_translate(fdt32_t *addr, u64 offset, int na) |
a0342c08 | 1237 | { |
eed36609 | 1238 | u64 a = fdt_read_number(addr, na); |
a0342c08 KG |
1239 | memset(addr, 0, na * 4); |
1240 | a += offset; | |
1241 | if (na > 1) | |
8aa5ec6e KP |
1242 | addr[na - 2] = cpu_to_fdt32(a >> 32); |
1243 | addr[na - 1] = cpu_to_fdt32(a & 0xffffffffu); | |
a0342c08 KG |
1244 | |
1245 | return 0; | |
1246 | } | |
1247 | ||
0a222d53 PB |
1248 | #ifdef CONFIG_OF_ISA_BUS |
1249 | ||
1250 | /* ISA bus translator */ | |
11e44fc6 | 1251 | static int of_bus_isa_match(const void *blob, int parentoffset) |
0a222d53 PB |
1252 | { |
1253 | const char *name; | |
1254 | ||
1255 | name = fdt_get_name(blob, parentoffset, NULL); | |
1256 | if (!name) | |
1257 | return 0; | |
1258 | ||
1259 | return !strcmp(name, "isa"); | |
1260 | } | |
1261 | ||
11e44fc6 | 1262 | static void of_bus_isa_count_cells(const void *blob, int parentoffset, |
0a222d53 PB |
1263 | int *addrc, int *sizec) |
1264 | { | |
1265 | if (addrc) | |
1266 | *addrc = 2; | |
1267 | if (sizec) | |
1268 | *sizec = 1; | |
1269 | } | |
1270 | ||
1271 | static u64 of_bus_isa_map(fdt32_t *addr, const fdt32_t *range, | |
1272 | int na, int ns, int pna) | |
1273 | { | |
1274 | u64 cp, s, da; | |
1275 | ||
1276 | /* Check address type match */ | |
1277 | if ((addr[0] ^ range[0]) & cpu_to_be32(1)) | |
1278 | return OF_BAD_ADDR; | |
1279 | ||
eed36609 SG |
1280 | cp = fdt_read_number(range + 1, na - 1); |
1281 | s = fdt_read_number(range + na + pna, ns); | |
1282 | da = fdt_read_number(addr + 1, na - 1); | |
0a222d53 | 1283 | |
d8e9cf4d | 1284 | debug("OF: ISA map, cp=%llx, s=%llx, da=%llx\n", cp, s, da); |
0a222d53 PB |
1285 | |
1286 | if (da < cp || da >= (cp + s)) | |
1287 | return OF_BAD_ADDR; | |
1288 | return da - cp; | |
1289 | } | |
1290 | ||
1291 | static int of_bus_isa_translate(fdt32_t *addr, u64 offset, int na) | |
1292 | { | |
1293 | return of_bus_default_translate(addr + 1, offset, na - 1); | |
1294 | } | |
1295 | ||
1296 | #endif /* CONFIG_OF_ISA_BUS */ | |
1297 | ||
a0342c08 KG |
1298 | /* Array of bus specific translators */ |
1299 | static struct of_bus of_busses[] = { | |
0a222d53 PB |
1300 | #ifdef CONFIG_OF_ISA_BUS |
1301 | /* ISA */ | |
1302 | { | |
1303 | .name = "isa", | |
1304 | .addresses = "reg", | |
1305 | .match = of_bus_isa_match, | |
1306 | .count_cells = of_bus_isa_count_cells, | |
1307 | .map = of_bus_isa_map, | |
1308 | .translate = of_bus_isa_translate, | |
1309 | }, | |
1310 | #endif /* CONFIG_OF_ISA_BUS */ | |
a0342c08 KG |
1311 | /* Default */ |
1312 | { | |
1313 | .name = "default", | |
1314 | .addresses = "reg", | |
eed36609 | 1315 | .count_cells = fdt_support_default_count_cells, |
a0342c08 KG |
1316 | .map = of_bus_default_map, |
1317 | .translate = of_bus_default_translate, | |
1318 | }, | |
1319 | }; | |
1320 | ||
11e44fc6 | 1321 | static struct of_bus *of_match_bus(const void *blob, int parentoffset) |
0a222d53 PB |
1322 | { |
1323 | struct of_bus *bus; | |
1324 | ||
1325 | if (ARRAY_SIZE(of_busses) == 1) | |
1326 | return of_busses; | |
1327 | ||
1328 | for (bus = of_busses; bus; bus++) { | |
1329 | if (!bus->match || bus->match(blob, parentoffset)) | |
1330 | return bus; | |
1331 | } | |
1332 | ||
1333 | /* | |
1334 | * We should always have matched the default bus at least, since | |
1335 | * it has a NULL match field. If we didn't then it somehow isn't | |
1336 | * in the of_busses array or something equally catastrophic has | |
1337 | * gone wrong. | |
1338 | */ | |
1339 | assert(0); | |
1340 | return NULL; | |
1341 | } | |
1342 | ||
11e44fc6 | 1343 | static int of_translate_one(const void *blob, int parent, struct of_bus *bus, |
8aa5ec6e | 1344 | struct of_bus *pbus, fdt32_t *addr, |
a0342c08 KG |
1345 | int na, int ns, int pna, const char *rprop) |
1346 | { | |
8aa5ec6e | 1347 | const fdt32_t *ranges; |
a0342c08 KG |
1348 | int rlen; |
1349 | int rone; | |
1350 | u64 offset = OF_BAD_ADDR; | |
1351 | ||
1352 | /* Normally, an absence of a "ranges" property means we are | |
1353 | * crossing a non-translatable boundary, and thus the addresses | |
1354 | * below the current not cannot be converted to CPU physical ones. | |
1355 | * Unfortunately, while this is very clear in the spec, it's not | |
1356 | * what Apple understood, and they do have things like /uni-n or | |
1357 | * /ht nodes with no "ranges" property and a lot of perfectly | |
1358 | * useable mapped devices below them. Thus we treat the absence of | |
1359 | * "ranges" as equivalent to an empty "ranges" property which means | |
1360 | * a 1:1 translation at that level. It's up to the caller not to try | |
1361 | * to translate addresses that aren't supposed to be translated in | |
1362 | * the first place. --BenH. | |
1363 | */ | |
8aa5ec6e | 1364 | ranges = fdt_getprop(blob, parent, rprop, &rlen); |
a0342c08 | 1365 | if (ranges == NULL || rlen == 0) { |
eed36609 | 1366 | offset = fdt_read_number(addr, na); |
a0342c08 KG |
1367 | memset(addr, 0, pna * 4); |
1368 | debug("OF: no ranges, 1:1 translation\n"); | |
1369 | goto finish; | |
1370 | } | |
1371 | ||
1372 | debug("OF: walking ranges...\n"); | |
1373 | ||
1374 | /* Now walk through the ranges */ | |
1375 | rlen /= 4; | |
1376 | rone = na + pna + ns; | |
1377 | for (; rlen >= rone; rlen -= rone, ranges += rone) { | |
1378 | offset = bus->map(addr, ranges, na, ns, pna); | |
1379 | if (offset != OF_BAD_ADDR) | |
1380 | break; | |
1381 | } | |
1382 | if (offset == OF_BAD_ADDR) { | |
1383 | debug("OF: not found !\n"); | |
1384 | return 1; | |
1385 | } | |
1386 | memcpy(addr, ranges + na, 4 * pna); | |
1387 | ||
1388 | finish: | |
1389 | of_dump_addr("OF: parent translation for:", addr, pna); | |
dee37fc9 | 1390 | debug("OF: with offset: %llu\n", offset); |
a0342c08 KG |
1391 | |
1392 | /* Translate it into parent bus space */ | |
1393 | return pbus->translate(addr, offset, pna); | |
1394 | } | |
1395 | ||
1396 | /* | |
1397 | * Translate an address from the device-tree into a CPU physical address, | |
1398 | * this walks up the tree and applies the various bus mappings on the | |
1399 | * way. | |
1400 | * | |
1401 | * Note: We consider that crossing any level with #size-cells == 0 to mean | |
1402 | * that translation is impossible (that is we are not dealing with a value | |
1403 | * that can be mapped to a cpu physical address). This is not really specified | |
1404 | * that way, but this is traditionally the way IBM at least do things | |
1405 | */ | |
11e44fc6 SW |
1406 | static u64 __of_translate_address(const void *blob, int node_offset, |
1407 | const fdt32_t *in_addr, const char *rprop) | |
a0342c08 KG |
1408 | { |
1409 | int parent; | |
1410 | struct of_bus *bus, *pbus; | |
8aa5ec6e | 1411 | fdt32_t addr[OF_MAX_ADDR_CELLS]; |
a0342c08 KG |
1412 | int na, ns, pna, pns; |
1413 | u64 result = OF_BAD_ADDR; | |
1414 | ||
1415 | debug("OF: ** translation for device %s **\n", | |
1416 | fdt_get_name(blob, node_offset, NULL)); | |
1417 | ||
1418 | /* Get parent & match bus type */ | |
1419 | parent = fdt_parent_offset(blob, node_offset); | |
1420 | if (parent < 0) | |
1421 | goto bail; | |
0a222d53 | 1422 | bus = of_match_bus(blob, parent); |
a0342c08 KG |
1423 | |
1424 | /* Cound address cells & copy address locally */ | |
6395f318 | 1425 | bus->count_cells(blob, parent, &na, &ns); |
4428f3c8 | 1426 | if (!OF_CHECK_COUNTS(na, ns)) { |
a0342c08 KG |
1427 | printf("%s: Bad cell count for %s\n", __FUNCTION__, |
1428 | fdt_get_name(blob, node_offset, NULL)); | |
1429 | goto bail; | |
1430 | } | |
1431 | memcpy(addr, in_addr, na * 4); | |
1432 | ||
1433 | debug("OF: bus is %s (na=%d, ns=%d) on %s\n", | |
1434 | bus->name, na, ns, fdt_get_name(blob, parent, NULL)); | |
1435 | of_dump_addr("OF: translating address:", addr, na); | |
1436 | ||
1437 | /* Translate */ | |
1438 | for (;;) { | |
1439 | /* Switch to parent bus */ | |
1440 | node_offset = parent; | |
1441 | parent = fdt_parent_offset(blob, node_offset); | |
1442 | ||
1443 | /* If root, we have finished */ | |
1444 | if (parent < 0) { | |
1445 | debug("OF: reached root node\n"); | |
eed36609 | 1446 | result = fdt_read_number(addr, na); |
a0342c08 KG |
1447 | break; |
1448 | } | |
1449 | ||
1450 | /* Get new parent bus and counts */ | |
0a222d53 | 1451 | pbus = of_match_bus(blob, parent); |
6395f318 | 1452 | pbus->count_cells(blob, parent, &pna, &pns); |
4428f3c8 | 1453 | if (!OF_CHECK_COUNTS(pna, pns)) { |
a0342c08 KG |
1454 | printf("%s: Bad cell count for %s\n", __FUNCTION__, |
1455 | fdt_get_name(blob, node_offset, NULL)); | |
1456 | break; | |
1457 | } | |
1458 | ||
1459 | debug("OF: parent bus is %s (na=%d, ns=%d) on %s\n", | |
1460 | pbus->name, pna, pns, fdt_get_name(blob, parent, NULL)); | |
1461 | ||
1462 | /* Apply bus translation */ | |
1463 | if (of_translate_one(blob, node_offset, bus, pbus, | |
1464 | addr, na, ns, pna, rprop)) | |
1465 | break; | |
1466 | ||
1467 | /* Complete the move up one level */ | |
1468 | na = pna; | |
1469 | ns = pns; | |
1470 | bus = pbus; | |
1471 | ||
1472 | of_dump_addr("OF: one level translation:", addr, na); | |
1473 | } | |
1474 | bail: | |
1475 | ||
1476 | return result; | |
1477 | } | |
1478 | ||
11e44fc6 SW |
1479 | u64 fdt_translate_address(const void *blob, int node_offset, |
1480 | const fdt32_t *in_addr) | |
a0342c08 KG |
1481 | { |
1482 | return __of_translate_address(blob, node_offset, in_addr, "ranges"); | |
1483 | } | |
75e73afd | 1484 | |
641067fb FD |
1485 | u64 fdt_translate_dma_address(const void *blob, int node_offset, |
1486 | const fdt32_t *in_addr) | |
1487 | { | |
1488 | return __of_translate_address(blob, node_offset, in_addr, "dma-ranges"); | |
1489 | } | |
1490 | ||
51bdb509 NSJ |
1491 | int fdt_get_dma_range(const void *blob, int node, phys_addr_t *cpu, |
1492 | dma_addr_t *bus, u64 *size) | |
1493 | { | |
1494 | bool found_dma_ranges = false; | |
1495 | struct of_bus *bus_node; | |
1496 | const fdt32_t *ranges; | |
1497 | int na, ns, pna, pns; | |
1498 | int parent = node; | |
1499 | int ret = 0; | |
1500 | int len; | |
1501 | ||
1502 | /* Find the closest dma-ranges property */ | |
1503 | while (parent >= 0) { | |
1504 | ranges = fdt_getprop(blob, parent, "dma-ranges", &len); | |
1505 | ||
1506 | /* Ignore empty ranges, they imply no translation required */ | |
1507 | if (ranges && len > 0) | |
1508 | break; | |
1509 | ||
1510 | /* Once we find 'dma-ranges', then a missing one is an error */ | |
1511 | if (found_dma_ranges && !ranges) { | |
1512 | ret = -EINVAL; | |
1513 | goto out; | |
1514 | } | |
1515 | ||
1516 | if (ranges) | |
1517 | found_dma_ranges = true; | |
1518 | ||
1519 | parent = fdt_parent_offset(blob, parent); | |
1520 | } | |
1521 | ||
1522 | if (!ranges || parent < 0) { | |
1523 | debug("no dma-ranges found for node %s\n", | |
1524 | fdt_get_name(blob, node, NULL)); | |
1525 | ret = -ENOENT; | |
1526 | goto out; | |
1527 | } | |
1528 | ||
1529 | /* switch to that node */ | |
1530 | node = parent; | |
1531 | parent = fdt_parent_offset(blob, node); | |
1532 | if (parent < 0) { | |
8c8bf4f1 | 1533 | printf("Found dma-ranges in root node, shouldn't happen\n"); |
51bdb509 NSJ |
1534 | ret = -EINVAL; |
1535 | goto out; | |
1536 | } | |
1537 | ||
1538 | /* Get the address sizes both for the bus and its parent */ | |
1539 | bus_node = of_match_bus(blob, node); | |
1540 | bus_node->count_cells(blob, node, &na, &ns); | |
1541 | if (!OF_CHECK_COUNTS(na, ns)) { | |
1542 | printf("%s: Bad cell count for %s\n", __FUNCTION__, | |
1543 | fdt_get_name(blob, node, NULL)); | |
1544 | return -EINVAL; | |
1545 | goto out; | |
1546 | } | |
1547 | ||
1548 | bus_node = of_match_bus(blob, parent); | |
1549 | bus_node->count_cells(blob, parent, &pna, &pns); | |
1550 | if (!OF_CHECK_COUNTS(pna, pns)) { | |
1551 | printf("%s: Bad cell count for %s\n", __FUNCTION__, | |
1552 | fdt_get_name(blob, parent, NULL)); | |
1553 | return -EINVAL; | |
1554 | goto out; | |
1555 | } | |
1556 | ||
1557 | *bus = fdt_read_number(ranges, na); | |
1558 | *cpu = fdt_translate_dma_address(blob, node, ranges + na); | |
1559 | *size = fdt_read_number(ranges + na + pna, ns); | |
1560 | out: | |
1561 | return ret; | |
1562 | } | |
1563 | ||
75e73afd | 1564 | /** |
ded112f2 | 1565 | * fdt_node_offset_by_compat_reg: Find a node that matches compatible and |
75e73afd KG |
1566 | * who's reg property matches a physical cpu address |
1567 | * | |
1568 | * @blob: ptr to device tree | |
ded112f2 | 1569 | * @compat: compatible string to match |
75e73afd KG |
1570 | * @compat_off: property name |
1571 | * | |
1572 | */ | |
1573 | int fdt_node_offset_by_compat_reg(void *blob, const char *compat, | |
1574 | phys_addr_t compat_off) | |
1575 | { | |
3058e283 MB |
1576 | int len, off; |
1577 | ||
1578 | fdt_for_each_node_by_compatible(off, blob, -1, compat) { | |
8aa5ec6e | 1579 | const fdt32_t *reg = fdt_getprop(blob, off, "reg", &len); |
3058e283 MB |
1580 | if (reg && compat_off == fdt_translate_address(blob, off, reg)) |
1581 | return off; | |
75e73afd KG |
1582 | } |
1583 | ||
1584 | return -FDT_ERR_NOTFOUND; | |
1585 | } | |
1586 | ||
9ab0c2f8 MB |
1587 | static int vnode_offset_by_pathf(void *blob, const char *fmt, va_list ap) |
1588 | { | |
1589 | char path[512]; | |
1590 | int len; | |
1591 | ||
1592 | len = vsnprintf(path, sizeof(path), fmt, ap); | |
1593 | if (len < 0 || len + 1 > sizeof(path)) | |
1594 | return -FDT_ERR_NOSPACE; | |
1595 | ||
1596 | return fdt_path_offset(blob, path); | |
1597 | } | |
1598 | ||
1599 | /** | |
1600 | * fdt_node_offset_by_pathf: Find node offset by sprintf formatted path | |
1601 | * | |
1602 | * @blob: ptr to device tree | |
1603 | * @fmt: path format | |
1604 | * @ap: vsnprintf arguments | |
1605 | */ | |
1606 | int fdt_node_offset_by_pathf(void *blob, const char *fmt, ...) | |
1607 | { | |
1608 | va_list ap; | |
1609 | int res; | |
1610 | ||
1611 | va_start(ap, fmt); | |
1612 | res = vnode_offset_by_pathf(blob, fmt, ap); | |
1613 | va_end(ap); | |
1614 | ||
1615 | return res; | |
1616 | } | |
1617 | ||
a8d2a75d | 1618 | /* |
f117c0f0 | 1619 | * fdt_set_phandle: Create a phandle property for the given node |
a8d2a75d GVB |
1620 | * |
1621 | * @fdt: ptr to device tree | |
1622 | * @nodeoffset: node to update | |
1623 | * @phandle: phandle value to set (must be unique) | |
f117c0f0 KG |
1624 | */ |
1625 | int fdt_set_phandle(void *fdt, int nodeoffset, uint32_t phandle) | |
a8d2a75d GVB |
1626 | { |
1627 | int ret; | |
1628 | ||
1629 | #ifdef DEBUG | |
1630 | int off = fdt_node_offset_by_phandle(fdt, phandle); | |
1631 | ||
1632 | if ((off >= 0) && (off != nodeoffset)) { | |
1633 | char buf[64]; | |
1634 | ||
1635 | fdt_get_path(fdt, nodeoffset, buf, sizeof(buf)); | |
1636 | printf("Trying to update node %s with phandle %u ", | |
1637 | buf, phandle); | |
1638 | ||
1639 | fdt_get_path(fdt, off, buf, sizeof(buf)); | |
1640 | printf("that already exists in node %s.\n", buf); | |
1641 | return -FDT_ERR_BADPHANDLE; | |
1642 | } | |
1643 | #endif | |
1644 | ||
1645 | ret = fdt_setprop_cell(fdt, nodeoffset, "phandle", phandle); | |
a8d2a75d GVB |
1646 | |
1647 | return ret; | |
1648 | } | |
1649 | ||
10aeabd1 | 1650 | /* |
c92ccba7 | 1651 | * fdt_create_phandle: Get or create a phandle property for the given node |
10aeabd1 KG |
1652 | * |
1653 | * @fdt: ptr to device tree | |
1654 | * @nodeoffset: node to update | |
1655 | */ | |
3c927ccc | 1656 | unsigned int fdt_create_phandle(void *fdt, int nodeoffset) |
10aeabd1 KG |
1657 | { |
1658 | /* see if there is a phandle already */ | |
76f5a728 | 1659 | uint32_t phandle = fdt_get_phandle(fdt, nodeoffset); |
10aeabd1 KG |
1660 | |
1661 | /* if we got 0, means no phandle so create one */ | |
1662 | if (phandle == 0) { | |
3c927ccc TT |
1663 | int ret; |
1664 | ||
76f5a728 MB |
1665 | ret = fdt_generate_phandle(fdt, &phandle); |
1666 | if (ret < 0) { | |
1667 | printf("Can't generate phandle: %s\n", | |
1668 | fdt_strerror(ret)); | |
1669 | return 0; | |
1670 | } | |
1671 | ||
3c927ccc TT |
1672 | ret = fdt_set_phandle(fdt, nodeoffset, phandle); |
1673 | if (ret < 0) { | |
1674 | printf("Can't set phandle %u: %s\n", phandle, | |
1675 | fdt_strerror(ret)); | |
1676 | return 0; | |
1677 | } | |
10aeabd1 KG |
1678 | } |
1679 | ||
1680 | return phandle; | |
1681 | } | |
1682 | ||
9ab0c2f8 MB |
1683 | /** |
1684 | * fdt_create_phandle_by_compatible: Get or create a phandle for first node with | |
1685 | * given compatible | |
1686 | * | |
1687 | * @fdt: ptr to device tree | |
1688 | * @compat: node's compatible string | |
1689 | */ | |
1690 | unsigned int fdt_create_phandle_by_compatible(void *fdt, const char *compat) | |
1691 | { | |
1692 | int offset = fdt_node_offset_by_compatible(fdt, -1, compat); | |
1693 | ||
1694 | if (offset < 0) { | |
1695 | printf("Can't find node with compatible \"%s\": %s\n", compat, | |
1696 | fdt_strerror(offset)); | |
1697 | return 0; | |
1698 | } | |
1699 | ||
1700 | return fdt_create_phandle(fdt, offset); | |
1701 | } | |
1702 | ||
1703 | /** | |
1704 | * fdt_create_phandle_by_pathf: Get or create a phandle for node given by | |
1705 | * sprintf-formatted path | |
1706 | * | |
1707 | * @fdt: ptr to device tree | |
1708 | * @fmt, ...: path format string and arguments to pass to sprintf | |
1709 | */ | |
1710 | unsigned int fdt_create_phandle_by_pathf(void *fdt, const char *fmt, ...) | |
1711 | { | |
1712 | va_list ap; | |
1713 | int offset; | |
1714 | ||
1715 | va_start(ap, fmt); | |
1716 | offset = vnode_offset_by_pathf(fdt, fmt, ap); | |
1717 | va_end(ap); | |
1718 | ||
1719 | if (offset < 0) { | |
1720 | printf("Can't find node by given path: %s\n", | |
1721 | fdt_strerror(offset)); | |
1722 | return 0; | |
1723 | } | |
1724 | ||
1725 | return fdt_create_phandle(fdt, offset); | |
1726 | } | |
1727 | ||
2a523f52 SL |
1728 | /* |
1729 | * fdt_set_node_status: Set status for the given node | |
1730 | * | |
1731 | * @fdt: ptr to device tree | |
1732 | * @nodeoffset: node to update | |
2105cd04 | 1733 | * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED, FDT_STATUS_FAIL |
2a523f52 | 1734 | */ |
2105cd04 | 1735 | int fdt_set_node_status(void *fdt, int nodeoffset, enum fdt_status status) |
2a523f52 | 1736 | { |
2a523f52 SL |
1737 | int ret = 0; |
1738 | ||
1739 | if (nodeoffset < 0) | |
1740 | return nodeoffset; | |
1741 | ||
1742 | switch (status) { | |
1743 | case FDT_STATUS_OKAY: | |
1744 | ret = fdt_setprop_string(fdt, nodeoffset, "status", "okay"); | |
1745 | break; | |
1746 | case FDT_STATUS_DISABLED: | |
1747 | ret = fdt_setprop_string(fdt, nodeoffset, "status", "disabled"); | |
1748 | break; | |
1749 | case FDT_STATUS_FAIL: | |
1750 | ret = fdt_setprop_string(fdt, nodeoffset, "status", "fail"); | |
1751 | break; | |
2a523f52 SL |
1752 | default: |
1753 | printf("Invalid fdt status: %x\n", status); | |
1754 | ret = -1; | |
1755 | break; | |
1756 | } | |
1757 | ||
1758 | return ret; | |
1759 | } | |
1760 | ||
1761 | /* | |
1762 | * fdt_set_status_by_alias: Set status for the given node given an alias | |
1763 | * | |
1764 | * @fdt: ptr to device tree | |
1765 | * @alias: alias of node to update | |
2105cd04 | 1766 | * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED, FDT_STATUS_FAIL |
2a523f52 SL |
1767 | */ |
1768 | int fdt_set_status_by_alias(void *fdt, const char* alias, | |
2105cd04 | 1769 | enum fdt_status status) |
2a523f52 SL |
1770 | { |
1771 | int offset = fdt_path_offset(fdt, alias); | |
1772 | ||
2105cd04 | 1773 | return fdt_set_node_status(fdt, offset, status); |
2a523f52 SL |
1774 | } |
1775 | ||
9ab0c2f8 MB |
1776 | /** |
1777 | * fdt_set_status_by_compatible: Set node status for first node with given | |
1778 | * compatible | |
1779 | * | |
1780 | * @fdt: ptr to device tree | |
1781 | * @compat: node's compatible string | |
1782 | * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED, FDT_STATUS_FAIL | |
1783 | */ | |
1784 | int fdt_set_status_by_compatible(void *fdt, const char *compat, | |
1785 | enum fdt_status status) | |
1786 | { | |
1787 | int offset = fdt_node_offset_by_compatible(fdt, -1, compat); | |
1788 | ||
1789 | if (offset < 0) | |
1790 | return offset; | |
1791 | ||
1792 | return fdt_set_node_status(fdt, offset, status); | |
1793 | } | |
1794 | ||
1795 | /** | |
1796 | * fdt_set_status_by_pathf: Set node status for node given by sprintf-formatted | |
1797 | * path | |
1798 | * | |
1799 | * @fdt: ptr to device tree | |
1800 | * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED, FDT_STATUS_FAIL | |
1801 | * @fmt, ...: path format string and arguments to pass to sprintf | |
1802 | */ | |
1803 | int fdt_set_status_by_pathf(void *fdt, enum fdt_status status, const char *fmt, | |
1804 | ...) | |
1805 | { | |
1806 | va_list ap; | |
1807 | int offset; | |
1808 | ||
1809 | va_start(ap, fmt); | |
1810 | offset = vnode_offset_by_pathf(fdt, fmt, ap); | |
1811 | va_end(ap); | |
1812 | ||
1813 | if (offset < 0) | |
1814 | return offset; | |
1815 | ||
1816 | return fdt_set_node_status(fdt, offset, status); | |
1817 | } | |
1818 | ||
bb682001 TT |
1819 | /* |
1820 | * Verify the physical address of device tree node for a given alias | |
1821 | * | |
1822 | * This function locates the device tree node of a given alias, and then | |
1823 | * verifies that the physical address of that device matches the given | |
1824 | * parameter. It displays a message if there is a mismatch. | |
1825 | * | |
1826 | * Returns 1 on success, 0 on failure | |
1827 | */ | |
1828 | int fdt_verify_alias_address(void *fdt, int anode, const char *alias, u64 addr) | |
1829 | { | |
1830 | const char *path; | |
8aa5ec6e | 1831 | const fdt32_t *reg; |
bb682001 TT |
1832 | int node, len; |
1833 | u64 dt_addr; | |
1834 | ||
1835 | path = fdt_getprop(fdt, anode, alias, NULL); | |
1836 | if (!path) { | |
1837 | /* If there's no such alias, then it's not a failure */ | |
1838 | return 1; | |
1839 | } | |
1840 | ||
1841 | node = fdt_path_offset(fdt, path); | |
1842 | if (node < 0) { | |
1843 | printf("Warning: device tree alias '%s' points to invalid " | |
1844 | "node %s.\n", alias, path); | |
1845 | return 0; | |
1846 | } | |
1847 | ||
1848 | reg = fdt_getprop(fdt, node, "reg", &len); | |
1849 | if (!reg) { | |
1850 | printf("Warning: device tree node '%s' has no address.\n", | |
1851 | path); | |
1852 | return 0; | |
1853 | } | |
1854 | ||
1855 | dt_addr = fdt_translate_address(fdt, node, reg); | |
1856 | if (addr != dt_addr) { | |
dee37fc9 MY |
1857 | printf("Warning: U-Boot configured device %s at address %llu,\n" |
1858 | "but the device tree has it address %llx.\n", | |
1859 | alias, addr, dt_addr); | |
bb682001 TT |
1860 | return 0; |
1861 | } | |
1862 | ||
1863 | return 1; | |
1864 | } | |
1865 | ||
1866 | /* | |
1867 | * Returns the base address of an SOC or PCI node | |
1868 | */ | |
ec002119 | 1869 | u64 fdt_get_base_address(const void *fdt, int node) |
bb682001 TT |
1870 | { |
1871 | int size; | |
8aa5ec6e | 1872 | const fdt32_t *prop; |
bb682001 | 1873 | |
336a4487 | 1874 | prop = fdt_getprop(fdt, node, "reg", &size); |
bb682001 | 1875 | |
e3665ba9 | 1876 | return prop ? fdt_translate_address(fdt, node, prop) : OF_BAD_ADDR; |
bb682001 | 1877 | } |
c48e6868 AG |
1878 | |
1879 | /* | |
a932aa3c BM |
1880 | * Read a property of size <prop_len>. Currently only supports 1 or 2 cells, |
1881 | * or 3 cells specially for a PCI address. | |
c48e6868 AG |
1882 | */ |
1883 | static int fdt_read_prop(const fdt32_t *prop, int prop_len, int cell_off, | |
1884 | uint64_t *val, int cells) | |
1885 | { | |
a932aa3c BM |
1886 | const fdt32_t *prop32; |
1887 | const unaligned_fdt64_t *prop64; | |
c48e6868 AG |
1888 | |
1889 | if ((cell_off + cells) > prop_len) | |
1890 | return -FDT_ERR_NOSPACE; | |
1891 | ||
a932aa3c BM |
1892 | prop32 = &prop[cell_off]; |
1893 | ||
1894 | /* | |
1895 | * Special handling for PCI address in PCI bus <ranges> | |
1896 | * | |
1897 | * PCI child address is made up of 3 cells. Advance the cell offset | |
1898 | * by 1 so that the PCI child address can be correctly read. | |
1899 | */ | |
1900 | if (cells == 3) | |
1901 | cell_off += 1; | |
1902 | prop64 = (const fdt64_t *)&prop[cell_off]; | |
1903 | ||
c48e6868 AG |
1904 | switch (cells) { |
1905 | case 1: | |
1906 | *val = fdt32_to_cpu(*prop32); | |
1907 | break; | |
1908 | case 2: | |
a932aa3c | 1909 | case 3: |
c48e6868 AG |
1910 | *val = fdt64_to_cpu(*prop64); |
1911 | break; | |
1912 | default: | |
1913 | return -FDT_ERR_NOSPACE; | |
1914 | } | |
1915 | ||
1916 | return 0; | |
1917 | } | |
1918 | ||
1919 | /** | |
1920 | * fdt_read_range - Read a node's n'th range property | |
1921 | * | |
1922 | * @fdt: ptr to device tree | |
1923 | * @node: offset of node | |
1924 | * @n: range index | |
1925 | * @child_addr: pointer to storage for the "child address" field | |
1926 | * @addr: pointer to storage for the CPU view translated physical start | |
1927 | * @len: pointer to storage for the range length | |
1928 | * | |
1929 | * Convenience function that reads and interprets a specific range out of | |
1930 | * a number of the "ranges" property array. | |
1931 | */ | |
1932 | int fdt_read_range(void *fdt, int node, int n, uint64_t *child_addr, | |
1933 | uint64_t *addr, uint64_t *len) | |
1934 | { | |
1935 | int pnode = fdt_parent_offset(fdt, node); | |
1936 | const fdt32_t *ranges; | |
1937 | int pacells; | |
1938 | int acells; | |
1939 | int scells; | |
1940 | int ranges_len; | |
1941 | int cell = 0; | |
1942 | int r = 0; | |
1943 | ||
1944 | /* | |
1945 | * The "ranges" property is an array of | |
1946 | * { <child address> <parent address> <size in child address space> } | |
1947 | * | |
1948 | * All 3 elements can span a diffent number of cells. Fetch their size. | |
1949 | */ | |
1950 | pacells = fdt_getprop_u32_default_node(fdt, pnode, 0, "#address-cells", 1); | |
1951 | acells = fdt_getprop_u32_default_node(fdt, node, 0, "#address-cells", 1); | |
1952 | scells = fdt_getprop_u32_default_node(fdt, node, 0, "#size-cells", 1); | |
1953 | ||
1954 | /* Now try to get the ranges property */ | |
1955 | ranges = fdt_getprop(fdt, node, "ranges", &ranges_len); | |
1956 | if (!ranges) | |
1957 | return -FDT_ERR_NOTFOUND; | |
1958 | ranges_len /= sizeof(uint32_t); | |
1959 | ||
1960 | /* Jump to the n'th entry */ | |
1961 | cell = n * (pacells + acells + scells); | |
1962 | ||
1963 | /* Read <child address> */ | |
1964 | if (child_addr) { | |
1965 | r = fdt_read_prop(ranges, ranges_len, cell, child_addr, | |
1966 | acells); | |
1967 | if (r) | |
1968 | return r; | |
1969 | } | |
1970 | cell += acells; | |
1971 | ||
1972 | /* Read <parent address> */ | |
1973 | if (addr) | |
1974 | *addr = fdt_translate_address(fdt, node, ranges + cell); | |
1975 | cell += pacells; | |
1976 | ||
1977 | /* Read <size in child address space> */ | |
1978 | if (len) { | |
1979 | r = fdt_read_prop(ranges, ranges_len, cell, len, scells); | |
1980 | if (r) | |
1981 | return r; | |
1982 | } | |
1983 | ||
1984 | return 0; | |
1985 | } | |
d4f495a8 HG |
1986 | |
1987 | /** | |
1988 | * fdt_setup_simplefb_node - Fill and enable a simplefb node | |
1989 | * | |
1990 | * @fdt: ptr to device tree | |
1991 | * @node: offset of the simplefb node | |
1992 | * @base_address: framebuffer base address | |
1993 | * @width: width in pixels | |
1994 | * @height: height in pixels | |
1995 | * @stride: bytes per line | |
1996 | * @format: pixel format string | |
1997 | * | |
1998 | * Convenience function to fill and enable a simplefb node. | |
1999 | */ | |
2000 | int fdt_setup_simplefb_node(void *fdt, int node, u64 base_address, u32 width, | |
2001 | u32 height, u32 stride, const char *format) | |
2002 | { | |
2003 | char name[32]; | |
2004 | fdt32_t cells[4]; | |
2005 | int i, addrc, sizec, ret; | |
2006 | ||
eed36609 SG |
2007 | fdt_support_default_count_cells(fdt, fdt_parent_offset(fdt, node), |
2008 | &addrc, &sizec); | |
d4f495a8 HG |
2009 | i = 0; |
2010 | if (addrc == 2) | |
2011 | cells[i++] = cpu_to_fdt32(base_address >> 32); | |
2012 | cells[i++] = cpu_to_fdt32(base_address); | |
2013 | if (sizec == 2) | |
2014 | cells[i++] = 0; | |
2015 | cells[i++] = cpu_to_fdt32(height * stride); | |
2016 | ||
2017 | ret = fdt_setprop(fdt, node, "reg", cells, sizeof(cells[0]) * i); | |
2018 | if (ret < 0) | |
2019 | return ret; | |
2020 | ||
dee37fc9 | 2021 | snprintf(name, sizeof(name), "framebuffer@%llx", base_address); |
d4f495a8 HG |
2022 | ret = fdt_set_name(fdt, node, name); |
2023 | if (ret < 0) | |
2024 | return ret; | |
2025 | ||
2026 | ret = fdt_setprop_u32(fdt, node, "width", width); | |
2027 | if (ret < 0) | |
2028 | return ret; | |
2029 | ||
2030 | ret = fdt_setprop_u32(fdt, node, "height", height); | |
2031 | if (ret < 0) | |
2032 | return ret; | |
2033 | ||
2034 | ret = fdt_setprop_u32(fdt, node, "stride", stride); | |
2035 | if (ret < 0) | |
2036 | return ret; | |
2037 | ||
2038 | ret = fdt_setprop_string(fdt, node, "format", format); | |
2039 | if (ret < 0) | |
2040 | return ret; | |
2041 | ||
2042 | ret = fdt_setprop_string(fdt, node, "status", "okay"); | |
2043 | if (ret < 0) | |
2044 | return ret; | |
2045 | ||
2046 | return 0; | |
2047 | } | |
08daa258 | 2048 | |
efe1ceec DT |
2049 | #if CONFIG_IS_ENABLED(VIDEO) |
2050 | int fdt_add_fb_mem_rsv(void *blob) | |
2051 | { | |
2052 | struct fdt_memory mem; | |
2053 | ||
2054 | /* nothing to do when the frame buffer is not defined */ | |
2055 | if (gd->video_bottom == gd->video_top) | |
2056 | return 0; | |
2057 | ||
2058 | /* reserved with no-map tag the video buffer */ | |
2059 | mem.start = gd->video_bottom; | |
2060 | mem.end = gd->video_top - 1; | |
2061 | ||
2062 | return fdtdec_add_reserved_memory(blob, "framebuffer", &mem, NULL, 0, NULL, | |
2063 | FDTDEC_RESERVED_MEMORY_NO_MAP); | |
2064 | } | |
2065 | #endif | |
2066 | ||
08daa258 TH |
2067 | /* |
2068 | * Update native-mode in display-timings from display environment variable. | |
2069 | * The node to update are specified by path. | |
2070 | */ | |
2071 | int fdt_fixup_display(void *blob, const char *path, const char *display) | |
2072 | { | |
2073 | int off, toff; | |
2074 | ||
2075 | if (!display || !path) | |
2076 | return -FDT_ERR_NOTFOUND; | |
2077 | ||
2078 | toff = fdt_path_offset(blob, path); | |
2079 | if (toff >= 0) | |
2080 | toff = fdt_subnode_offset(blob, toff, "display-timings"); | |
2081 | if (toff < 0) | |
2082 | return toff; | |
2083 | ||
2084 | for (off = fdt_first_subnode(blob, toff); | |
2085 | off >= 0; | |
2086 | off = fdt_next_subnode(blob, off)) { | |
2087 | uint32_t h = fdt_get_phandle(blob, off); | |
2088 | debug("%s:0x%x\n", fdt_get_name(blob, off, NULL), | |
2089 | fdt32_to_cpu(h)); | |
2090 | if (strcasecmp(fdt_get_name(blob, off, NULL), display) == 0) | |
2091 | return fdt_setprop_u32(blob, toff, "native-mode", h); | |
2092 | } | |
2093 | return toff; | |
2094 | } | |
fc7c3189 PA |
2095 | |
2096 | #ifdef CONFIG_OF_LIBFDT_OVERLAY | |
2097 | /** | |
2098 | * fdt_overlay_apply_verbose - Apply an overlay with verbose error reporting | |
2099 | * | |
2100 | * @fdt: ptr to device tree | |
2101 | * @fdto: ptr to device tree overlay | |
2102 | * | |
2103 | * Convenience function to apply an overlay and display helpful messages | |
2104 | * in the case of an error | |
2105 | */ | |
2106 | int fdt_overlay_apply_verbose(void *fdt, void *fdto) | |
2107 | { | |
2108 | int err; | |
2109 | bool has_symbols; | |
2110 | ||
2111 | err = fdt_path_offset(fdt, "/__symbols__"); | |
2112 | has_symbols = err >= 0; | |
2113 | ||
2114 | err = fdt_overlay_apply(fdt, fdto); | |
2115 | if (err < 0) { | |
2116 | printf("failed on fdt_overlay_apply(): %s\n", | |
2117 | fdt_strerror(err)); | |
2118 | if (!has_symbols) { | |
a3a884c6 | 2119 | printf("base fdt does not have a /__symbols__ node\n"); |
fc7c3189 PA |
2120 | printf("make sure you've compiled with -@\n"); |
2121 | } | |
2122 | } | |
2123 | return err; | |
2124 | } | |
2125 | #endif | |
bbdbcaf5 KM |
2126 | |
2127 | /** | |
2128 | * fdt_valid() - Check if an FDT is valid. If not, change it to NULL | |
2129 | * | |
2130 | * @blobp: Pointer to FDT pointer | |
185f812c | 2131 | * Return: 1 if OK, 0 if bad (in which case *blobp is set to NULL) |
bbdbcaf5 KM |
2132 | */ |
2133 | int fdt_valid(struct fdt_header **blobp) | |
2134 | { | |
2135 | const void *blob = *blobp; | |
2136 | int err; | |
2137 | ||
2138 | if (!blob) { | |
2139 | printf("The address of the fdt is invalid (NULL).\n"); | |
2140 | return 0; | |
2141 | } | |
2142 | ||
2143 | err = fdt_check_header(blob); | |
2144 | if (err == 0) | |
2145 | return 1; /* valid */ | |
2146 | ||
2147 | if (err < 0) { | |
2148 | printf("libfdt fdt_check_header(): %s", fdt_strerror(err)); | |
2149 | /* | |
2150 | * Be more informative on bad version. | |
2151 | */ | |
2152 | if (err == -FDT_ERR_BADVERSION) { | |
2153 | if (fdt_version(blob) < | |
2154 | FDT_FIRST_SUPPORTED_VERSION) { | |
2155 | printf(" - too old, fdt %d < %d", | |
2156 | fdt_version(blob), | |
2157 | FDT_FIRST_SUPPORTED_VERSION); | |
2158 | } | |
2159 | if (fdt_last_comp_version(blob) > | |
2160 | FDT_LAST_SUPPORTED_VERSION) { | |
2161 | printf(" - too new, fdt %d > %d", | |
2162 | fdt_version(blob), | |
2163 | FDT_LAST_SUPPORTED_VERSION); | |
2164 | } | |
2165 | } | |
2166 | printf("\n"); | |
2167 | *blobp = NULL; | |
2168 | return 0; | |
2169 | } | |
2170 | return 1; | |
2171 | } |