]>
Commit | Line | Data |
---|---|---|
64dbbd40 GVB |
1 | /* |
2 | * (C) Copyright 2007 | |
3 | * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com | |
4 | * | |
a0342c08 KG |
5 | * Copyright 2010 Freescale Semiconductor, Inc. |
6 | * | |
64dbbd40 GVB |
7 | * See file CREDITS for list of people who contributed to this |
8 | * project. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License as | |
12 | * published by the Free Software Foundation; either version 2 of | |
13 | * the License, or (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
23 | * MA 02111-1307 USA | |
24 | */ | |
25 | ||
26 | #include <common.h> | |
3e303f74 | 27 | #include <stdio_dev.h> |
64dbbd40 GVB |
28 | #include <linux/ctype.h> |
29 | #include <linux/types.h> | |
64dbbd40 GVB |
30 | #include <asm/global_data.h> |
31 | #include <fdt.h> | |
32 | #include <libfdt.h> | |
33 | #include <fdt_support.h> | |
151c8b09 | 34 | #include <exports.h> |
64dbbd40 GVB |
35 | |
36 | /* | |
37 | * Global data (for the gd->bd) | |
38 | */ | |
39 | DECLARE_GLOBAL_DATA_PTR; | |
40 | ||
3bed2aaf KG |
41 | /** |
42 | * fdt_getprop_u32_default - Find a node and return it's property or a default | |
43 | * | |
44 | * @fdt: ptr to device tree | |
45 | * @path: path of node | |
46 | * @prop: property name | |
47 | * @dflt: default value if the property isn't found | |
48 | * | |
49 | * Convenience function to find a node and return it's property or a | |
50 | * default value if it doesn't exist. | |
51 | */ | |
52 | u32 fdt_getprop_u32_default(void *fdt, const char *path, const char *prop, | |
53 | const u32 dflt) | |
54 | { | |
55 | const u32 *val; | |
56 | int off; | |
57 | ||
58 | off = fdt_path_offset(fdt, path); | |
59 | if (off < 0) | |
60 | return dflt; | |
61 | ||
62 | val = fdt_getprop(fdt, off, prop, NULL); | |
63 | if (val) | |
64 | return *val; | |
65 | else | |
66 | return dflt; | |
67 | } | |
64dbbd40 | 68 | |
a3c2933e KG |
69 | /** |
70 | * fdt_find_and_setprop: Find a node and set it's property | |
71 | * | |
72 | * @fdt: ptr to device tree | |
73 | * @node: path of node | |
74 | * @prop: property name | |
75 | * @val: ptr to new value | |
76 | * @len: length of new property value | |
77 | * @create: flag to create the property if it doesn't exist | |
78 | * | |
79 | * Convenience function to directly set a property given the path to the node. | |
80 | */ | |
81 | int fdt_find_and_setprop(void *fdt, const char *node, const char *prop, | |
82 | const void *val, int len, int create) | |
83 | { | |
8d04f02f | 84 | int nodeoff = fdt_path_offset(fdt, node); |
a3c2933e KG |
85 | |
86 | if (nodeoff < 0) | |
87 | return nodeoff; | |
88 | ||
89 | if ((!create) && (fdt_get_property(fdt, nodeoff, prop, 0) == NULL)) | |
90 | return 0; /* create flag not set; so exit quietly */ | |
91 | ||
92 | return fdt_setprop(fdt, nodeoff, prop, val, len); | |
93 | } | |
94 | ||
151c8b09 | 95 | #ifdef CONFIG_OF_STDOUT_VIA_ALIAS |
3e303f74 AV |
96 | |
97 | #ifdef CONFIG_SERIAL_MULTI | |
98 | static void fdt_fill_multisername(char *sername, size_t maxlen) | |
99 | { | |
100 | const char *outname = stdio_devices[stdout]->name; | |
101 | ||
102 | if (strcmp(outname, "serial") > 0) | |
103 | strncpy(sername, outname, maxlen); | |
104 | ||
105 | /* eserial? */ | |
106 | if (strcmp(outname + 1, "serial") > 0) | |
107 | strncpy(sername, outname + 1, maxlen); | |
108 | } | |
109 | #else | |
110 | static inline void fdt_fill_multisername(char *sername, size_t maxlen) {} | |
111 | #endif /* CONFIG_SERIAL_MULTI */ | |
112 | ||
40777812 | 113 | static int fdt_fixup_stdout(void *fdt, int chosenoff) |
151c8b09 KG |
114 | { |
115 | int err = 0; | |
116 | #ifdef CONFIG_CONS_INDEX | |
117 | int node; | |
118 | char sername[9] = { 0 }; | |
119 | const char *path; | |
120 | ||
3e303f74 AV |
121 | fdt_fill_multisername(sername, sizeof(sername) - 1); |
122 | if (!sername[0]) | |
123 | sprintf(sername, "serial%d", CONFIG_CONS_INDEX - 1); | |
151c8b09 KG |
124 | |
125 | err = node = fdt_path_offset(fdt, "/aliases"); | |
126 | if (node >= 0) { | |
127 | int len; | |
128 | path = fdt_getprop(fdt, node, sername, &len); | |
129 | if (path) { | |
130 | char *p = malloc(len); | |
131 | err = -FDT_ERR_NOSPACE; | |
132 | if (p) { | |
133 | memcpy(p, path, len); | |
40777812 | 134 | err = fdt_setprop(fdt, chosenoff, |
151c8b09 KG |
135 | "linux,stdout-path", p, len); |
136 | free(p); | |
137 | } | |
138 | } else { | |
139 | err = len; | |
140 | } | |
141 | } | |
142 | #endif | |
143 | if (err < 0) | |
144 | printf("WARNING: could not set linux,stdout-path %s.\n", | |
145 | fdt_strerror(err)); | |
146 | ||
147 | return err; | |
148 | } | |
149 | #endif | |
150 | ||
2a1a2cb6 | 151 | int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end, int force) |
64dbbd40 | 152 | { |
64dbbd40 | 153 | int nodeoffset; |
2a1a2cb6 KG |
154 | int err, j, total; |
155 | u32 tmp; | |
b60af3d4 | 156 | const char *path; |
2a1a2cb6 | 157 | uint64_t addr, size; |
64dbbd40 | 158 | |
2a1a2cb6 KG |
159 | /* Find the "chosen" node. */ |
160 | nodeoffset = fdt_path_offset (fdt, "/chosen"); | |
161 | ||
162 | /* If there is no "chosen" node in the blob return */ | |
163 | if (nodeoffset < 0) { | |
164 | printf("fdt_initrd: %s\n", fdt_strerror(nodeoffset)); | |
165 | return nodeoffset; | |
64dbbd40 GVB |
166 | } |
167 | ||
2a1a2cb6 KG |
168 | /* just return if initrd_start/end aren't valid */ |
169 | if ((initrd_start == 0) || (initrd_end == 0)) | |
170 | return 0; | |
c28abb9c | 171 | |
2a1a2cb6 KG |
172 | total = fdt_num_mem_rsv(fdt); |
173 | ||
174 | /* | |
175 | * Look for an existing entry and update it. If we don't find | |
176 | * the entry, we will j be the next available slot. | |
177 | */ | |
178 | for (j = 0; j < total; j++) { | |
179 | err = fdt_get_mem_rsv(fdt, j, &addr, &size); | |
180 | if (addr == initrd_start) { | |
181 | fdt_del_mem_rsv(fdt, j); | |
182 | break; | |
c28abb9c | 183 | } |
2a1a2cb6 | 184 | } |
8d04f02f | 185 | |
2a1a2cb6 KG |
186 | err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start + 1); |
187 | if (err < 0) { | |
188 | printf("fdt_initrd: %s\n", fdt_strerror(err)); | |
189 | return err; | |
190 | } | |
191 | ||
192 | path = fdt_getprop(fdt, nodeoffset, "linux,initrd-start", NULL); | |
193 | if ((path == NULL) || force) { | |
194 | tmp = __cpu_to_be32(initrd_start); | |
195 | err = fdt_setprop(fdt, nodeoffset, | |
196 | "linux,initrd-start", &tmp, sizeof(tmp)); | |
197 | if (err < 0) { | |
198 | printf("WARNING: " | |
199 | "could not set linux,initrd-start %s.\n", | |
200 | fdt_strerror(err)); | |
201 | return err; | |
202 | } | |
203 | tmp = __cpu_to_be32(initrd_end); | |
204 | err = fdt_setprop(fdt, nodeoffset, | |
205 | "linux,initrd-end", &tmp, sizeof(tmp)); | |
64dbbd40 | 206 | if (err < 0) { |
2a1a2cb6 KG |
207 | printf("WARNING: could not set linux,initrd-end %s.\n", |
208 | fdt_strerror(err)); | |
209 | ||
64dbbd40 GVB |
210 | return err; |
211 | } | |
212 | } | |
213 | ||
2a1a2cb6 KG |
214 | return 0; |
215 | } | |
216 | ||
56844a22 | 217 | int fdt_chosen(void *fdt, int force) |
2a1a2cb6 KG |
218 | { |
219 | int nodeoffset; | |
220 | int err; | |
221 | char *str; /* used to set string properties */ | |
222 | const char *path; | |
223 | ||
224 | err = fdt_check_header(fdt); | |
225 | if (err < 0) { | |
226 | printf("fdt_chosen: %s\n", fdt_strerror(err)); | |
227 | return err; | |
228 | } | |
229 | ||
64dbbd40 GVB |
230 | /* |
231 | * Find the "chosen" node. | |
232 | */ | |
8d04f02f | 233 | nodeoffset = fdt_path_offset (fdt, "/chosen"); |
64dbbd40 GVB |
234 | |
235 | /* | |
b60af3d4 | 236 | * If there is no "chosen" node in the blob, create it. |
64dbbd40 GVB |
237 | */ |
238 | if (nodeoffset < 0) { | |
239 | /* | |
240 | * Create a new node "/chosen" (offset 0 is root level) | |
241 | */ | |
242 | nodeoffset = fdt_add_subnode(fdt, 0, "chosen"); | |
243 | if (nodeoffset < 0) { | |
5fe6be62 | 244 | printf("WARNING: could not create /chosen %s.\n", |
35ec398f | 245 | fdt_strerror(nodeoffset)); |
64dbbd40 GVB |
246 | return nodeoffset; |
247 | } | |
248 | } | |
249 | ||
250 | /* | |
b60af3d4 GVB |
251 | * Create /chosen properites that don't exist in the fdt. |
252 | * If the property exists, update it only if the "force" parameter | |
253 | * is true. | |
64dbbd40 GVB |
254 | */ |
255 | str = getenv("bootargs"); | |
256 | if (str != NULL) { | |
b60af3d4 GVB |
257 | path = fdt_getprop(fdt, nodeoffset, "bootargs", NULL); |
258 | if ((path == NULL) || force) { | |
259 | err = fdt_setprop(fdt, nodeoffset, | |
260 | "bootargs", str, strlen(str)+1); | |
261 | if (err < 0) | |
262 | printf("WARNING: could not set bootargs %s.\n", | |
263 | fdt_strerror(err)); | |
264 | } | |
64dbbd40 | 265 | } |
2a1a2cb6 | 266 | |
151c8b09 | 267 | #ifdef CONFIG_OF_STDOUT_VIA_ALIAS |
b60af3d4 GVB |
268 | path = fdt_getprop(fdt, nodeoffset, "linux,stdout-path", NULL); |
269 | if ((path == NULL) || force) | |
270 | err = fdt_fixup_stdout(fdt, nodeoffset); | |
151c8b09 KG |
271 | #endif |
272 | ||
64dbbd40 | 273 | #ifdef OF_STDOUT_PATH |
b60af3d4 GVB |
274 | path = fdt_getprop(fdt, nodeoffset, "linux,stdout-path", NULL); |
275 | if ((path == NULL) || force) { | |
276 | err = fdt_setprop(fdt, nodeoffset, | |
277 | "linux,stdout-path", OF_STDOUT_PATH, strlen(OF_STDOUT_PATH)+1); | |
278 | if (err < 0) | |
279 | printf("WARNING: could not set linux,stdout-path %s.\n", | |
280 | fdt_strerror(err)); | |
281 | } | |
64dbbd40 GVB |
282 | #endif |
283 | ||
64dbbd40 GVB |
284 | return err; |
285 | } | |
286 | ||
e93becf8 KG |
287 | void do_fixup_by_path(void *fdt, const char *path, const char *prop, |
288 | const void *val, int len, int create) | |
289 | { | |
290 | #if defined(DEBUG) | |
291 | int i; | |
d9ad115b | 292 | debug("Updating property '%s/%s' = ", path, prop); |
e93becf8 KG |
293 | for (i = 0; i < len; i++) |
294 | debug(" %.2x", *(u8*)(val+i)); | |
295 | debug("\n"); | |
296 | #endif | |
297 | int rc = fdt_find_and_setprop(fdt, path, prop, val, len, create); | |
298 | if (rc) | |
299 | printf("Unable to update property %s:%s, err=%s\n", | |
300 | path, prop, fdt_strerror(rc)); | |
301 | } | |
302 | ||
303 | void do_fixup_by_path_u32(void *fdt, const char *path, const char *prop, | |
304 | u32 val, int create) | |
305 | { | |
306 | val = cpu_to_fdt32(val); | |
307 | do_fixup_by_path(fdt, path, prop, &val, sizeof(val), create); | |
308 | } | |
309 | ||
9eb77cea KG |
310 | void do_fixup_by_prop(void *fdt, |
311 | const char *pname, const void *pval, int plen, | |
312 | const char *prop, const void *val, int len, | |
313 | int create) | |
314 | { | |
315 | int off; | |
316 | #if defined(DEBUG) | |
317 | int i; | |
d9ad115b | 318 | debug("Updating property '%s' = ", prop); |
9eb77cea KG |
319 | for (i = 0; i < len; i++) |
320 | debug(" %.2x", *(u8*)(val+i)); | |
321 | debug("\n"); | |
322 | #endif | |
323 | off = fdt_node_offset_by_prop_value(fdt, -1, pname, pval, plen); | |
324 | while (off != -FDT_ERR_NOTFOUND) { | |
325 | if (create || (fdt_get_property(fdt, off, prop, 0) != NULL)) | |
326 | fdt_setprop(fdt, off, prop, val, len); | |
327 | off = fdt_node_offset_by_prop_value(fdt, off, pname, pval, plen); | |
328 | } | |
329 | } | |
330 | ||
331 | void do_fixup_by_prop_u32(void *fdt, | |
332 | const char *pname, const void *pval, int plen, | |
333 | const char *prop, u32 val, int create) | |
334 | { | |
335 | val = cpu_to_fdt32(val); | |
336 | do_fixup_by_prop(fdt, pname, pval, plen, prop, &val, 4, create); | |
337 | } | |
338 | ||
339 | void do_fixup_by_compat(void *fdt, const char *compat, | |
340 | const char *prop, const void *val, int len, int create) | |
341 | { | |
342 | int off = -1; | |
343 | #if defined(DEBUG) | |
344 | int i; | |
d9ad115b | 345 | debug("Updating property '%s' = ", prop); |
9eb77cea KG |
346 | for (i = 0; i < len; i++) |
347 | debug(" %.2x", *(u8*)(val+i)); | |
348 | debug("\n"); | |
349 | #endif | |
350 | off = fdt_node_offset_by_compatible(fdt, -1, compat); | |
351 | while (off != -FDT_ERR_NOTFOUND) { | |
352 | if (create || (fdt_get_property(fdt, off, prop, 0) != NULL)) | |
353 | fdt_setprop(fdt, off, prop, val, len); | |
354 | off = fdt_node_offset_by_compatible(fdt, off, compat); | |
355 | } | |
356 | } | |
357 | ||
358 | void do_fixup_by_compat_u32(void *fdt, const char *compat, | |
359 | const char *prop, u32 val, int create) | |
360 | { | |
361 | val = cpu_to_fdt32(val); | |
362 | do_fixup_by_compat(fdt, compat, prop, &val, 4, create); | |
363 | } | |
364 | ||
3c927281 KG |
365 | int fdt_fixup_memory(void *blob, u64 start, u64 size) |
366 | { | |
367 | int err, nodeoffset, len = 0; | |
368 | u8 tmp[16]; | |
369 | const u32 *addrcell, *sizecell; | |
370 | ||
371 | err = fdt_check_header(blob); | |
372 | if (err < 0) { | |
373 | printf("%s: %s\n", __FUNCTION__, fdt_strerror(err)); | |
374 | return err; | |
375 | } | |
376 | ||
377 | /* update, or add and update /memory node */ | |
378 | nodeoffset = fdt_path_offset(blob, "/memory"); | |
379 | if (nodeoffset < 0) { | |
380 | nodeoffset = fdt_add_subnode(blob, 0, "memory"); | |
381 | if (nodeoffset < 0) | |
382 | printf("WARNING: could not create /memory: %s.\n", | |
383 | fdt_strerror(nodeoffset)); | |
384 | return nodeoffset; | |
385 | } | |
386 | err = fdt_setprop(blob, nodeoffset, "device_type", "memory", | |
387 | sizeof("memory")); | |
388 | if (err < 0) { | |
389 | printf("WARNING: could not set %s %s.\n", "device_type", | |
390 | fdt_strerror(err)); | |
391 | return err; | |
392 | } | |
393 | ||
394 | addrcell = fdt_getprop(blob, 0, "#address-cells", NULL); | |
395 | /* use shifts and mask to ensure endianness */ | |
396 | if ((addrcell) && (*addrcell == 2)) { | |
397 | tmp[0] = (start >> 56) & 0xff; | |
398 | tmp[1] = (start >> 48) & 0xff; | |
399 | tmp[2] = (start >> 40) & 0xff; | |
400 | tmp[3] = (start >> 32) & 0xff; | |
401 | tmp[4] = (start >> 24) & 0xff; | |
402 | tmp[5] = (start >> 16) & 0xff; | |
403 | tmp[6] = (start >> 8) & 0xff; | |
404 | tmp[7] = (start ) & 0xff; | |
405 | len = 8; | |
406 | } else { | |
407 | tmp[0] = (start >> 24) & 0xff; | |
408 | tmp[1] = (start >> 16) & 0xff; | |
409 | tmp[2] = (start >> 8) & 0xff; | |
410 | tmp[3] = (start ) & 0xff; | |
411 | len = 4; | |
412 | } | |
413 | ||
414 | sizecell = fdt_getprop(blob, 0, "#size-cells", NULL); | |
415 | /* use shifts and mask to ensure endianness */ | |
416 | if ((sizecell) && (*sizecell == 2)) { | |
417 | tmp[0+len] = (size >> 56) & 0xff; | |
418 | tmp[1+len] = (size >> 48) & 0xff; | |
419 | tmp[2+len] = (size >> 40) & 0xff; | |
420 | tmp[3+len] = (size >> 32) & 0xff; | |
421 | tmp[4+len] = (size >> 24) & 0xff; | |
422 | tmp[5+len] = (size >> 16) & 0xff; | |
423 | tmp[6+len] = (size >> 8) & 0xff; | |
424 | tmp[7+len] = (size ) & 0xff; | |
425 | len += 8; | |
426 | } else { | |
427 | tmp[0+len] = (size >> 24) & 0xff; | |
428 | tmp[1+len] = (size >> 16) & 0xff; | |
429 | tmp[2+len] = (size >> 8) & 0xff; | |
430 | tmp[3+len] = (size ) & 0xff; | |
431 | len += 4; | |
432 | } | |
433 | ||
434 | err = fdt_setprop(blob, nodeoffset, "reg", tmp, len); | |
435 | if (err < 0) { | |
436 | printf("WARNING: could not set %s %s.\n", | |
437 | "reg", fdt_strerror(err)); | |
438 | return err; | |
439 | } | |
440 | return 0; | |
441 | } | |
442 | ||
ba37aa03 | 443 | void fdt_fixup_ethernet(void *fdt) |
ab544633 | 444 | { |
ba37aa03 KG |
445 | int node, i, j; |
446 | char enet[16], *tmp, *end; | |
447 | char mac[16] = "ethaddr"; | |
ab544633 | 448 | const char *path; |
ba37aa03 | 449 | unsigned char mac_addr[6]; |
ab544633 KG |
450 | |
451 | node = fdt_path_offset(fdt, "/aliases"); | |
ba37aa03 KG |
452 | if (node < 0) |
453 | return; | |
454 | ||
455 | i = 0; | |
456 | while ((tmp = getenv(mac)) != NULL) { | |
457 | sprintf(enet, "ethernet%d", i); | |
458 | path = fdt_getprop(fdt, node, enet, NULL); | |
459 | if (!path) { | |
460 | debug("No alias for %s\n", enet); | |
461 | sprintf(mac, "eth%daddr", ++i); | |
462 | continue; | |
ab544633 | 463 | } |
ba37aa03 KG |
464 | |
465 | for (j = 0; j < 6; j++) { | |
466 | mac_addr[j] = tmp ? simple_strtoul(tmp, &end, 16) : 0; | |
467 | if (tmp) | |
468 | tmp = (*end) ? end+1 : end; | |
ab544633 | 469 | } |
ba37aa03 KG |
470 | |
471 | do_fixup_by_path(fdt, path, "mac-address", &mac_addr, 6, 0); | |
472 | do_fixup_by_path(fdt, path, "local-mac-address", | |
473 | &mac_addr, 6, 1); | |
474 | ||
475 | sprintf(mac, "eth%daddr", ++i); | |
ab544633 KG |
476 | } |
477 | } | |
18e69a35 | 478 | |
3082d234 KG |
479 | /* Resize the fdt to its actual size + a bit of padding */ |
480 | int fdt_resize(void *blob) | |
481 | { | |
482 | int i; | |
483 | uint64_t addr, size; | |
484 | int total, ret; | |
485 | uint actualsize; | |
486 | ||
487 | if (!blob) | |
488 | return 0; | |
489 | ||
490 | total = fdt_num_mem_rsv(blob); | |
491 | for (i = 0; i < total; i++) { | |
492 | fdt_get_mem_rsv(blob, i, &addr, &size); | |
493 | if (addr == (uint64_t)(u32)blob) { | |
494 | fdt_del_mem_rsv(blob, i); | |
495 | break; | |
496 | } | |
497 | } | |
498 | ||
f242a088 PK |
499 | /* |
500 | * Calculate the actual size of the fdt | |
d535a493 KG |
501 | * plus the size needed for two fdt_add_mem_rsv, one |
502 | * for the fdt itself and one for a possible initrd | |
f242a088 | 503 | */ |
3082d234 | 504 | actualsize = fdt_off_dt_strings(blob) + |
d535a493 | 505 | fdt_size_dt_strings(blob) + 2*sizeof(struct fdt_reserve_entry); |
3082d234 KG |
506 | |
507 | /* Make it so the fdt ends on a page boundary */ | |
c088a108 | 508 | actualsize = ALIGN(actualsize + ((uint)blob & 0xfff), 0x1000); |
3082d234 KG |
509 | actualsize = actualsize - ((uint)blob & 0xfff); |
510 | ||
511 | /* Change the fdt header to reflect the correct size */ | |
512 | fdt_set_totalsize(blob, actualsize); | |
513 | ||
514 | /* Add the new reservation */ | |
515 | ret = fdt_add_mem_rsv(blob, (uint)blob, actualsize); | |
516 | if (ret < 0) | |
517 | return ret; | |
518 | ||
519 | return actualsize; | |
520 | } | |
8ab451c4 KG |
521 | |
522 | #ifdef CONFIG_PCI | |
cfd700be | 523 | #define CONFIG_SYS_PCI_NR_INBOUND_WIN 4 |
8ab451c4 KG |
524 | |
525 | #define FDT_PCI_PREFETCH (0x40000000) | |
526 | #define FDT_PCI_MEM32 (0x02000000) | |
527 | #define FDT_PCI_IO (0x01000000) | |
528 | #define FDT_PCI_MEM64 (0x03000000) | |
529 | ||
530 | int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose) { | |
531 | ||
532 | int addrcell, sizecell, len, r; | |
533 | u32 *dma_range; | |
534 | /* sized based on pci addr cells, size-cells, & address-cells */ | |
535 | u32 dma_ranges[(3 + 2 + 2) * CONFIG_SYS_PCI_NR_INBOUND_WIN]; | |
536 | ||
537 | addrcell = fdt_getprop_u32_default(blob, "/", "#address-cells", 1); | |
538 | sizecell = fdt_getprop_u32_default(blob, "/", "#size-cells", 1); | |
539 | ||
540 | dma_range = &dma_ranges[0]; | |
541 | for (r = 0; r < hose->region_count; r++) { | |
542 | u64 bus_start, phys_start, size; | |
543 | ||
ff4e66e9 KG |
544 | /* skip if !PCI_REGION_SYS_MEMORY */ |
545 | if (!(hose->regions[r].flags & PCI_REGION_SYS_MEMORY)) | |
8ab451c4 KG |
546 | continue; |
547 | ||
548 | bus_start = (u64)hose->regions[r].bus_start; | |
549 | phys_start = (u64)hose->regions[r].phys_start; | |
550 | size = (u64)hose->regions[r].size; | |
551 | ||
552 | dma_range[0] = 0; | |
cfd700be | 553 | if (size >= 0x100000000ull) |
8ab451c4 KG |
554 | dma_range[0] |= FDT_PCI_MEM64; |
555 | else | |
556 | dma_range[0] |= FDT_PCI_MEM32; | |
557 | if (hose->regions[r].flags & PCI_REGION_PREFETCH) | |
558 | dma_range[0] |= FDT_PCI_PREFETCH; | |
559 | #ifdef CONFIG_SYS_PCI_64BIT | |
560 | dma_range[1] = bus_start >> 32; | |
561 | #else | |
562 | dma_range[1] = 0; | |
563 | #endif | |
564 | dma_range[2] = bus_start & 0xffffffff; | |
565 | ||
566 | if (addrcell == 2) { | |
567 | dma_range[3] = phys_start >> 32; | |
568 | dma_range[4] = phys_start & 0xffffffff; | |
569 | } else { | |
570 | dma_range[3] = phys_start & 0xffffffff; | |
571 | } | |
572 | ||
573 | if (sizecell == 2) { | |
574 | dma_range[3 + addrcell + 0] = size >> 32; | |
575 | dma_range[3 + addrcell + 1] = size & 0xffffffff; | |
576 | } else { | |
577 | dma_range[3 + addrcell + 0] = size & 0xffffffff; | |
578 | } | |
579 | ||
580 | dma_range += (3 + addrcell + sizecell); | |
581 | } | |
582 | ||
583 | len = dma_range - &dma_ranges[0]; | |
584 | if (len) | |
585 | fdt_setprop(blob, phb_off, "dma-ranges", &dma_ranges[0], len*4); | |
586 | ||
587 | return 0; | |
588 | } | |
589 | #endif | |
30d45c0d SR |
590 | |
591 | #ifdef CONFIG_FDT_FIXUP_NOR_FLASH_SIZE | |
592 | /* | |
593 | * This function can be used to update the size in the "reg" property | |
594 | * of the NOR FLASH device nodes. This is necessary for boards with | |
595 | * non-fixed NOR FLASH sizes. | |
596 | */ | |
597 | int fdt_fixup_nor_flash_size(void *blob, int cs, u32 size) | |
598 | { | |
599 | char compat[][16] = { "cfi-flash", "jedec-flash" }; | |
600 | int off; | |
601 | int len; | |
602 | struct fdt_property *prop; | |
603 | u32 *reg; | |
604 | int i; | |
605 | ||
606 | for (i = 0; i < 2; i++) { | |
607 | off = fdt_node_offset_by_compatible(blob, -1, compat[i]); | |
608 | while (off != -FDT_ERR_NOTFOUND) { | |
609 | /* | |
610 | * Found one compatible node, now check if this one | |
611 | * has the correct CS | |
612 | */ | |
613 | prop = fdt_get_property_w(blob, off, "reg", &len); | |
614 | if (prop) { | |
615 | reg = (u32 *)&prop->data[0]; | |
616 | if (reg[0] == cs) { | |
617 | reg[2] = size; | |
618 | fdt_setprop(blob, off, "reg", reg, | |
619 | 3 * sizeof(u32)); | |
620 | ||
621 | return 0; | |
622 | } | |
623 | } | |
624 | ||
625 | /* Move to next compatible node */ | |
626 | off = fdt_node_offset_by_compatible(blob, off, | |
627 | compat[i]); | |
628 | } | |
629 | } | |
630 | ||
631 | return -1; | |
632 | } | |
633 | #endif | |
3c950e2e AG |
634 | |
635 | #ifdef CONFIG_FDT_FIXUP_PARTITIONS | |
636 | #include <jffs2/load_kernel.h> | |
637 | #include <mtd_node.h> | |
638 | ||
639 | struct reg_cell { | |
640 | unsigned int r0; | |
641 | unsigned int r1; | |
642 | }; | |
643 | ||
644 | int fdt_del_subnodes(const void *blob, int parent_offset) | |
645 | { | |
646 | int off, ndepth; | |
647 | int ret; | |
648 | ||
649 | for (ndepth = 0, off = fdt_next_node(blob, parent_offset, &ndepth); | |
650 | (off >= 0) && (ndepth > 0); | |
651 | off = fdt_next_node(blob, off, &ndepth)) { | |
652 | if (ndepth == 1) { | |
653 | debug("delete %s: offset: %x\n", | |
654 | fdt_get_name(blob, off, 0), off); | |
655 | ret = fdt_del_node((void *)blob, off); | |
656 | if (ret < 0) { | |
657 | printf("Can't delete node: %s\n", | |
658 | fdt_strerror(ret)); | |
659 | return ret; | |
660 | } else { | |
661 | ndepth = 0; | |
662 | off = parent_offset; | |
663 | } | |
664 | } | |
665 | } | |
666 | return 0; | |
667 | } | |
668 | ||
669 | int fdt_increase_size(void *fdt, int add_len) | |
670 | { | |
671 | int newlen; | |
672 | ||
673 | newlen = fdt_totalsize(fdt) + add_len; | |
674 | ||
675 | /* Open in place with a new len */ | |
676 | return fdt_open_into(fdt, fdt, newlen); | |
677 | } | |
678 | ||
679 | int fdt_del_partitions(void *blob, int parent_offset) | |
680 | { | |
681 | const void *prop; | |
682 | int ndepth = 0; | |
683 | int off; | |
684 | int ret; | |
685 | ||
686 | off = fdt_next_node(blob, parent_offset, &ndepth); | |
687 | if (off > 0 && ndepth == 1) { | |
688 | prop = fdt_getprop(blob, off, "label", NULL); | |
689 | if (prop == NULL) { | |
690 | /* | |
691 | * Could not find label property, nand {}; node? | |
692 | * Check subnode, delete partitions there if any. | |
693 | */ | |
694 | return fdt_del_partitions(blob, off); | |
695 | } else { | |
696 | ret = fdt_del_subnodes(blob, parent_offset); | |
697 | if (ret < 0) { | |
698 | printf("Can't remove subnodes: %s\n", | |
699 | fdt_strerror(ret)); | |
700 | return ret; | |
701 | } | |
702 | } | |
703 | } | |
704 | return 0; | |
705 | } | |
706 | ||
707 | int fdt_node_set_part_info(void *blob, int parent_offset, | |
708 | struct mtd_device *dev) | |
709 | { | |
710 | struct list_head *pentry; | |
711 | struct part_info *part; | |
712 | struct reg_cell cell; | |
713 | int off, ndepth = 0; | |
714 | int part_num, ret; | |
715 | char buf[64]; | |
716 | ||
717 | ret = fdt_del_partitions(blob, parent_offset); | |
718 | if (ret < 0) | |
719 | return ret; | |
720 | ||
721 | /* | |
722 | * Check if it is nand {}; subnode, adjust | |
723 | * the offset in this case | |
724 | */ | |
725 | off = fdt_next_node(blob, parent_offset, &ndepth); | |
726 | if (off > 0 && ndepth == 1) | |
727 | parent_offset = off; | |
728 | ||
729 | part_num = 0; | |
730 | list_for_each_prev(pentry, &dev->parts) { | |
731 | int newoff; | |
732 | ||
733 | part = list_entry(pentry, struct part_info, link); | |
734 | ||
735 | debug("%2d: %-20s0x%08x\t0x%08x\t%d\n", | |
736 | part_num, part->name, part->size, | |
737 | part->offset, part->mask_flags); | |
738 | ||
739 | sprintf(buf, "partition@%x", part->offset); | |
740 | add_sub: | |
741 | ret = fdt_add_subnode(blob, parent_offset, buf); | |
742 | if (ret == -FDT_ERR_NOSPACE) { | |
743 | ret = fdt_increase_size(blob, 512); | |
744 | if (!ret) | |
745 | goto add_sub; | |
746 | else | |
747 | goto err_size; | |
748 | } else if (ret < 0) { | |
749 | printf("Can't add partition node: %s\n", | |
750 | fdt_strerror(ret)); | |
751 | return ret; | |
752 | } | |
753 | newoff = ret; | |
754 | ||
755 | /* Check MTD_WRITEABLE_CMD flag */ | |
756 | if (part->mask_flags & 1) { | |
757 | add_ro: | |
758 | ret = fdt_setprop(blob, newoff, "read_only", NULL, 0); | |
759 | if (ret == -FDT_ERR_NOSPACE) { | |
760 | ret = fdt_increase_size(blob, 512); | |
761 | if (!ret) | |
762 | goto add_ro; | |
763 | else | |
764 | goto err_size; | |
765 | } else if (ret < 0) | |
766 | goto err_prop; | |
767 | } | |
768 | ||
769 | cell.r0 = cpu_to_fdt32(part->offset); | |
770 | cell.r1 = cpu_to_fdt32(part->size); | |
771 | add_reg: | |
772 | ret = fdt_setprop(blob, newoff, "reg", &cell, sizeof(cell)); | |
773 | if (ret == -FDT_ERR_NOSPACE) { | |
774 | ret = fdt_increase_size(blob, 512); | |
775 | if (!ret) | |
776 | goto add_reg; | |
777 | else | |
778 | goto err_size; | |
779 | } else if (ret < 0) | |
780 | goto err_prop; | |
781 | ||
782 | add_label: | |
783 | ret = fdt_setprop_string(blob, newoff, "label", part->name); | |
784 | if (ret == -FDT_ERR_NOSPACE) { | |
785 | ret = fdt_increase_size(blob, 512); | |
786 | if (!ret) | |
787 | goto add_label; | |
788 | else | |
789 | goto err_size; | |
790 | } else if (ret < 0) | |
791 | goto err_prop; | |
792 | ||
793 | part_num++; | |
794 | } | |
795 | return 0; | |
796 | err_size: | |
797 | printf("Can't increase blob size: %s\n", fdt_strerror(ret)); | |
798 | return ret; | |
799 | err_prop: | |
800 | printf("Can't add property: %s\n", fdt_strerror(ret)); | |
801 | return ret; | |
802 | } | |
803 | ||
804 | /* | |
805 | * Update partitions in nor/nand nodes using info from | |
806 | * mtdparts environment variable. The nodes to update are | |
807 | * specified by node_info structure which contains mtd device | |
808 | * type and compatible string: E. g. the board code in | |
809 | * ft_board_setup() could use: | |
810 | * | |
811 | * struct node_info nodes[] = { | |
812 | * { "fsl,mpc5121-nfc", MTD_DEV_TYPE_NAND, }, | |
813 | * { "cfi-flash", MTD_DEV_TYPE_NOR, }, | |
814 | * }; | |
815 | * | |
816 | * fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes)); | |
817 | */ | |
818 | void fdt_fixup_mtdparts(void *blob, void *node_info, int node_info_size) | |
819 | { | |
820 | struct node_info *ni = node_info; | |
821 | struct mtd_device *dev; | |
822 | char *parts; | |
823 | int i, idx; | |
824 | int noff; | |
825 | ||
826 | parts = getenv("mtdparts"); | |
827 | if (!parts) | |
828 | return; | |
829 | ||
830 | if (mtdparts_init() != 0) | |
831 | return; | |
832 | ||
833 | for (i = 0; i < node_info_size; i++) { | |
834 | idx = 0; | |
835 | noff = fdt_node_offset_by_compatible(blob, -1, ni[i].compat); | |
836 | while (noff != -FDT_ERR_NOTFOUND) { | |
837 | debug("%s: %s, mtd dev type %d\n", | |
838 | fdt_get_name(blob, noff, 0), | |
839 | ni[i].compat, ni[i].type); | |
840 | dev = device_find(ni[i].type, idx++); | |
841 | if (dev) { | |
842 | if (fdt_node_set_part_info(blob, noff, dev)) | |
843 | return; /* return on error */ | |
844 | } | |
845 | ||
846 | /* Jump to next flash node */ | |
847 | noff = fdt_node_offset_by_compatible(blob, noff, | |
848 | ni[i].compat); | |
849 | } | |
850 | } | |
851 | } | |
852 | #endif | |
49b97d9c KG |
853 | |
854 | void fdt_del_node_and_alias(void *blob, const char *alias) | |
855 | { | |
856 | int off = fdt_path_offset(blob, alias); | |
857 | ||
858 | if (off < 0) | |
859 | return; | |
860 | ||
861 | fdt_del_node(blob, off); | |
862 | ||
863 | off = fdt_path_offset(blob, "/aliases"); | |
864 | fdt_delprop(blob, off, alias); | |
865 | } | |
a0342c08 KG |
866 | |
867 | /* Helper to read a big number; size is in cells (not bytes) */ | |
868 | static inline u64 of_read_number(const __be32 *cell, int size) | |
869 | { | |
870 | u64 r = 0; | |
871 | while (size--) | |
872 | r = (r << 32) | be32_to_cpu(*(cell++)); | |
873 | return r; | |
874 | } | |
875 | ||
876 | static int of_n_cells(const void *blob, int nodeoffset, const char *name) | |
877 | { | |
878 | int np; | |
879 | const int *ip; | |
880 | ||
881 | do { | |
882 | np = fdt_parent_offset(blob, nodeoffset); | |
883 | ||
884 | if (np >= 0) | |
885 | nodeoffset = np; | |
886 | ip = (int *)fdt_getprop(blob, nodeoffset, name, NULL); | |
887 | if (ip) | |
888 | return be32_to_cpup(ip); | |
889 | } while (np >= 0); | |
890 | ||
891 | /* No #<NAME>-cells property for the root node */ | |
892 | return 1; | |
893 | } | |
894 | ||
895 | int of_n_addr_cells(const void *blob, int nodeoffset) | |
896 | { | |
897 | return of_n_cells(blob, nodeoffset, "#address-cells"); | |
898 | } | |
899 | ||
900 | int of_n_size_cells(const void *blob, int nodeoffset) | |
901 | { | |
902 | return of_n_cells(blob, nodeoffset, "#size-cells"); | |
903 | } | |
904 | ||
905 | #define PRu64 "%llx" | |
906 | ||
907 | /* Max address size we deal with */ | |
908 | #define OF_MAX_ADDR_CELLS 4 | |
909 | #define OF_BAD_ADDR ((u64)-1) | |
910 | #define OF_CHECK_COUNTS(na, ns) ((na) > 0 && (na) <= OF_MAX_ADDR_CELLS && \ | |
911 | (ns) > 0) | |
912 | ||
913 | /* Debug utility */ | |
914 | #ifdef DEBUG | |
915 | static void of_dump_addr(const char *s, const u32 *addr, int na) | |
916 | { | |
917 | printf("%s", s); | |
918 | while(na--) | |
919 | printf(" %08x", *(addr++)); | |
920 | printf("\n"); | |
921 | } | |
922 | #else | |
923 | static void of_dump_addr(const char *s, const u32 *addr, int na) { } | |
924 | #endif | |
925 | ||
926 | /* Callbacks for bus specific translators */ | |
927 | struct of_bus { | |
928 | const char *name; | |
929 | const char *addresses; | |
930 | void (*count_cells)(void *blob, int offset, | |
931 | int *addrc, int *sizec); | |
932 | u64 (*map)(u32 *addr, const u32 *range, | |
933 | int na, int ns, int pna); | |
934 | int (*translate)(u32 *addr, u64 offset, int na); | |
935 | }; | |
936 | ||
937 | /* Default translator (generic bus) */ | |
938 | static void of_bus_default_count_cells(void *blob, int offset, | |
939 | int *addrc, int *sizec) | |
940 | { | |
941 | if (addrc) | |
942 | *addrc = of_n_addr_cells(blob, offset); | |
943 | if (sizec) | |
944 | *sizec = of_n_size_cells(blob, offset); | |
945 | } | |
946 | ||
947 | static u64 of_bus_default_map(u32 *addr, const u32 *range, | |
948 | int na, int ns, int pna) | |
949 | { | |
950 | u64 cp, s, da; | |
951 | ||
952 | cp = of_read_number(range, na); | |
953 | s = of_read_number(range + na + pna, ns); | |
954 | da = of_read_number(addr, na); | |
955 | ||
956 | debug("OF: default map, cp="PRu64", s="PRu64", da="PRu64"\n", | |
957 | cp, s, da); | |
958 | ||
959 | if (da < cp || da >= (cp + s)) | |
960 | return OF_BAD_ADDR; | |
961 | return da - cp; | |
962 | } | |
963 | ||
964 | static int of_bus_default_translate(u32 *addr, u64 offset, int na) | |
965 | { | |
966 | u64 a = of_read_number(addr, na); | |
967 | memset(addr, 0, na * 4); | |
968 | a += offset; | |
969 | if (na > 1) | |
970 | addr[na - 2] = a >> 32; | |
971 | addr[na - 1] = a & 0xffffffffu; | |
972 | ||
973 | return 0; | |
974 | } | |
975 | ||
976 | /* Array of bus specific translators */ | |
977 | static struct of_bus of_busses[] = { | |
978 | /* Default */ | |
979 | { | |
980 | .name = "default", | |
981 | .addresses = "reg", | |
982 | .count_cells = of_bus_default_count_cells, | |
983 | .map = of_bus_default_map, | |
984 | .translate = of_bus_default_translate, | |
985 | }, | |
986 | }; | |
987 | ||
988 | static int of_translate_one(void * blob, int parent, struct of_bus *bus, | |
989 | struct of_bus *pbus, u32 *addr, | |
990 | int na, int ns, int pna, const char *rprop) | |
991 | { | |
992 | const u32 *ranges; | |
993 | int rlen; | |
994 | int rone; | |
995 | u64 offset = OF_BAD_ADDR; | |
996 | ||
997 | /* Normally, an absence of a "ranges" property means we are | |
998 | * crossing a non-translatable boundary, and thus the addresses | |
999 | * below the current not cannot be converted to CPU physical ones. | |
1000 | * Unfortunately, while this is very clear in the spec, it's not | |
1001 | * what Apple understood, and they do have things like /uni-n or | |
1002 | * /ht nodes with no "ranges" property and a lot of perfectly | |
1003 | * useable mapped devices below them. Thus we treat the absence of | |
1004 | * "ranges" as equivalent to an empty "ranges" property which means | |
1005 | * a 1:1 translation at that level. It's up to the caller not to try | |
1006 | * to translate addresses that aren't supposed to be translated in | |
1007 | * the first place. --BenH. | |
1008 | */ | |
1009 | ranges = (u32 *)fdt_getprop(blob, parent, rprop, &rlen); | |
1010 | if (ranges == NULL || rlen == 0) { | |
1011 | offset = of_read_number(addr, na); | |
1012 | memset(addr, 0, pna * 4); | |
1013 | debug("OF: no ranges, 1:1 translation\n"); | |
1014 | goto finish; | |
1015 | } | |
1016 | ||
1017 | debug("OF: walking ranges...\n"); | |
1018 | ||
1019 | /* Now walk through the ranges */ | |
1020 | rlen /= 4; | |
1021 | rone = na + pna + ns; | |
1022 | for (; rlen >= rone; rlen -= rone, ranges += rone) { | |
1023 | offset = bus->map(addr, ranges, na, ns, pna); | |
1024 | if (offset != OF_BAD_ADDR) | |
1025 | break; | |
1026 | } | |
1027 | if (offset == OF_BAD_ADDR) { | |
1028 | debug("OF: not found !\n"); | |
1029 | return 1; | |
1030 | } | |
1031 | memcpy(addr, ranges + na, 4 * pna); | |
1032 | ||
1033 | finish: | |
1034 | of_dump_addr("OF: parent translation for:", addr, pna); | |
1035 | debug("OF: with offset: "PRu64"\n", offset); | |
1036 | ||
1037 | /* Translate it into parent bus space */ | |
1038 | return pbus->translate(addr, offset, pna); | |
1039 | } | |
1040 | ||
1041 | /* | |
1042 | * Translate an address from the device-tree into a CPU physical address, | |
1043 | * this walks up the tree and applies the various bus mappings on the | |
1044 | * way. | |
1045 | * | |
1046 | * Note: We consider that crossing any level with #size-cells == 0 to mean | |
1047 | * that translation is impossible (that is we are not dealing with a value | |
1048 | * that can be mapped to a cpu physical address). This is not really specified | |
1049 | * that way, but this is traditionally the way IBM at least do things | |
1050 | */ | |
1051 | u64 __of_translate_address(void *blob, int node_offset, const u32 *in_addr, | |
1052 | const char *rprop) | |
1053 | { | |
1054 | int parent; | |
1055 | struct of_bus *bus, *pbus; | |
1056 | u32 addr[OF_MAX_ADDR_CELLS]; | |
1057 | int na, ns, pna, pns; | |
1058 | u64 result = OF_BAD_ADDR; | |
1059 | ||
1060 | debug("OF: ** translation for device %s **\n", | |
1061 | fdt_get_name(blob, node_offset, NULL)); | |
1062 | ||
1063 | /* Get parent & match bus type */ | |
1064 | parent = fdt_parent_offset(blob, node_offset); | |
1065 | if (parent < 0) | |
1066 | goto bail; | |
1067 | bus = &of_busses[0]; | |
1068 | ||
1069 | /* Cound address cells & copy address locally */ | |
1070 | bus->count_cells(blob, node_offset, &na, &ns); | |
1071 | if (!OF_CHECK_COUNTS(na, ns)) { | |
1072 | printf("%s: Bad cell count for %s\n", __FUNCTION__, | |
1073 | fdt_get_name(blob, node_offset, NULL)); | |
1074 | goto bail; | |
1075 | } | |
1076 | memcpy(addr, in_addr, na * 4); | |
1077 | ||
1078 | debug("OF: bus is %s (na=%d, ns=%d) on %s\n", | |
1079 | bus->name, na, ns, fdt_get_name(blob, parent, NULL)); | |
1080 | of_dump_addr("OF: translating address:", addr, na); | |
1081 | ||
1082 | /* Translate */ | |
1083 | for (;;) { | |
1084 | /* Switch to parent bus */ | |
1085 | node_offset = parent; | |
1086 | parent = fdt_parent_offset(blob, node_offset); | |
1087 | ||
1088 | /* If root, we have finished */ | |
1089 | if (parent < 0) { | |
1090 | debug("OF: reached root node\n"); | |
1091 | result = of_read_number(addr, na); | |
1092 | break; | |
1093 | } | |
1094 | ||
1095 | /* Get new parent bus and counts */ | |
1096 | pbus = &of_busses[0]; | |
1097 | pbus->count_cells(blob, node_offset, &pna, &pns); | |
1098 | if (!OF_CHECK_COUNTS(pna, pns)) { | |
1099 | printf("%s: Bad cell count for %s\n", __FUNCTION__, | |
1100 | fdt_get_name(blob, node_offset, NULL)); | |
1101 | break; | |
1102 | } | |
1103 | ||
1104 | debug("OF: parent bus is %s (na=%d, ns=%d) on %s\n", | |
1105 | pbus->name, pna, pns, fdt_get_name(blob, parent, NULL)); | |
1106 | ||
1107 | /* Apply bus translation */ | |
1108 | if (of_translate_one(blob, node_offset, bus, pbus, | |
1109 | addr, na, ns, pna, rprop)) | |
1110 | break; | |
1111 | ||
1112 | /* Complete the move up one level */ | |
1113 | na = pna; | |
1114 | ns = pns; | |
1115 | bus = pbus; | |
1116 | ||
1117 | of_dump_addr("OF: one level translation:", addr, na); | |
1118 | } | |
1119 | bail: | |
1120 | ||
1121 | return result; | |
1122 | } | |
1123 | ||
1124 | u64 fdt_translate_address(void *blob, int node_offset, const u32 *in_addr) | |
1125 | { | |
1126 | return __of_translate_address(blob, node_offset, in_addr, "ranges"); | |
1127 | } | |
75e73afd KG |
1128 | |
1129 | /** | |
1130 | * fdt_node_offset_by_compat_reg: Find a node that matches compatiable and | |
1131 | * who's reg property matches a physical cpu address | |
1132 | * | |
1133 | * @blob: ptr to device tree | |
1134 | * @compat: compatiable string to match | |
1135 | * @compat_off: property name | |
1136 | * | |
1137 | */ | |
1138 | int fdt_node_offset_by_compat_reg(void *blob, const char *compat, | |
1139 | phys_addr_t compat_off) | |
1140 | { | |
1141 | int len, off = fdt_node_offset_by_compatible(blob, -1, compat); | |
1142 | while (off != -FDT_ERR_NOTFOUND) { | |
1143 | u32 *reg = (u32 *)fdt_getprop(blob, off, "reg", &len); | |
1144 | if (reg) { | |
1145 | if (compat_off == fdt_translate_address(blob, off, reg)) | |
1146 | return off; | |
1147 | } | |
1148 | off = fdt_node_offset_by_compatible(blob, off, compat); | |
1149 | } | |
1150 | ||
1151 | return -FDT_ERR_NOTFOUND; | |
1152 | } | |
1153 | ||
1154 |