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64dbbd40 GVB |
1 | /* |
2 | * (C) Copyright 2007 | |
3 | * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com | |
4 | * | |
2a523f52 | 5 | * Copyright 2010-2011 Freescale Semiconductor, Inc. |
a0342c08 | 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 | 30 | #include <asm/global_data.h> |
64dbbd40 GVB |
31 | #include <libfdt.h> |
32 | #include <fdt_support.h> | |
151c8b09 | 33 | #include <exports.h> |
64dbbd40 GVB |
34 | |
35 | /* | |
36 | * Global data (for the gd->bd) | |
37 | */ | |
38 | DECLARE_GLOBAL_DATA_PTR; | |
39 | ||
3bed2aaf KG |
40 | /** |
41 | * fdt_getprop_u32_default - Find a node and return it's property or a default | |
42 | * | |
43 | * @fdt: ptr to device tree | |
44 | * @path: path of node | |
45 | * @prop: property name | |
46 | * @dflt: default value if the property isn't found | |
47 | * | |
48 | * Convenience function to find a node and return it's property or a | |
49 | * default value if it doesn't exist. | |
50 | */ | |
07e12784 GB |
51 | u32 fdt_getprop_u32_default(const void *fdt, const char *path, |
52 | const char *prop, const u32 dflt) | |
3bed2aaf | 53 | { |
8aa5ec6e | 54 | const fdt32_t *val; |
3bed2aaf KG |
55 | int off; |
56 | ||
57 | off = fdt_path_offset(fdt, path); | |
58 | if (off < 0) | |
59 | return dflt; | |
60 | ||
61 | val = fdt_getprop(fdt, off, prop, NULL); | |
62 | if (val) | |
de16606a | 63 | return fdt32_to_cpu(*val); |
3bed2aaf KG |
64 | else |
65 | return dflt; | |
66 | } | |
64dbbd40 | 67 | |
a3c2933e KG |
68 | /** |
69 | * fdt_find_and_setprop: Find a node and set it's property | |
70 | * | |
71 | * @fdt: ptr to device tree | |
72 | * @node: path of node | |
73 | * @prop: property name | |
74 | * @val: ptr to new value | |
75 | * @len: length of new property value | |
76 | * @create: flag to create the property if it doesn't exist | |
77 | * | |
78 | * Convenience function to directly set a property given the path to the node. | |
79 | */ | |
80 | int fdt_find_and_setprop(void *fdt, const char *node, const char *prop, | |
81 | const void *val, int len, int create) | |
82 | { | |
8d04f02f | 83 | int nodeoff = fdt_path_offset(fdt, node); |
a3c2933e KG |
84 | |
85 | if (nodeoff < 0) | |
86 | return nodeoff; | |
87 | ||
8aa5ec6e | 88 | if ((!create) && (fdt_get_property(fdt, nodeoff, prop, NULL) == NULL)) |
a3c2933e KG |
89 | return 0; /* create flag not set; so exit quietly */ |
90 | ||
91 | return fdt_setprop(fdt, nodeoff, prop, val, len); | |
92 | } | |
93 | ||
151c8b09 | 94 | #ifdef CONFIG_OF_STDOUT_VIA_ALIAS |
3e303f74 | 95 | |
036036d7 | 96 | #ifdef CONFIG_CONS_INDEX |
3e303f74 AV |
97 | static void fdt_fill_multisername(char *sername, size_t maxlen) |
98 | { | |
99 | const char *outname = stdio_devices[stdout]->name; | |
100 | ||
101 | if (strcmp(outname, "serial") > 0) | |
102 | strncpy(sername, outname, maxlen); | |
103 | ||
104 | /* eserial? */ | |
105 | if (strcmp(outname + 1, "serial") > 0) | |
106 | strncpy(sername, outname + 1, maxlen); | |
107 | } | |
036036d7 | 108 | #endif |
3e303f74 | 109 | |
40777812 | 110 | static int fdt_fixup_stdout(void *fdt, int chosenoff) |
151c8b09 KG |
111 | { |
112 | int err = 0; | |
113 | #ifdef CONFIG_CONS_INDEX | |
114 | int node; | |
115 | char sername[9] = { 0 }; | |
116 | const char *path; | |
117 | ||
3e303f74 AV |
118 | fdt_fill_multisername(sername, sizeof(sername) - 1); |
119 | if (!sername[0]) | |
120 | sprintf(sername, "serial%d", CONFIG_CONS_INDEX - 1); | |
151c8b09 KG |
121 | |
122 | err = node = fdt_path_offset(fdt, "/aliases"); | |
123 | if (node >= 0) { | |
124 | int len; | |
125 | path = fdt_getprop(fdt, node, sername, &len); | |
126 | if (path) { | |
127 | char *p = malloc(len); | |
128 | err = -FDT_ERR_NOSPACE; | |
129 | if (p) { | |
130 | memcpy(p, path, len); | |
40777812 | 131 | err = fdt_setprop(fdt, chosenoff, |
151c8b09 KG |
132 | "linux,stdout-path", p, len); |
133 | free(p); | |
134 | } | |
135 | } else { | |
136 | err = len; | |
137 | } | |
138 | } | |
139 | #endif | |
140 | if (err < 0) | |
141 | printf("WARNING: could not set linux,stdout-path %s.\n", | |
142 | fdt_strerror(err)); | |
143 | ||
144 | return err; | |
145 | } | |
146 | #endif | |
147 | ||
2a1a2cb6 | 148 | int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end, int force) |
64dbbd40 | 149 | { |
64dbbd40 | 150 | int nodeoffset; |
2a1a2cb6 | 151 | int err, j, total; |
8aa5ec6e | 152 | fdt32_t tmp; |
b60af3d4 | 153 | const char *path; |
2a1a2cb6 | 154 | uint64_t addr, size; |
64dbbd40 | 155 | |
2a1a2cb6 KG |
156 | /* Find the "chosen" node. */ |
157 | nodeoffset = fdt_path_offset (fdt, "/chosen"); | |
158 | ||
159 | /* If there is no "chosen" node in the blob return */ | |
160 | if (nodeoffset < 0) { | |
161 | printf("fdt_initrd: %s\n", fdt_strerror(nodeoffset)); | |
162 | return nodeoffset; | |
64dbbd40 GVB |
163 | } |
164 | ||
2a1a2cb6 KG |
165 | /* just return if initrd_start/end aren't valid */ |
166 | if ((initrd_start == 0) || (initrd_end == 0)) | |
167 | return 0; | |
c28abb9c | 168 | |
2a1a2cb6 KG |
169 | total = fdt_num_mem_rsv(fdt); |
170 | ||
171 | /* | |
172 | * Look for an existing entry and update it. If we don't find | |
173 | * the entry, we will j be the next available slot. | |
174 | */ | |
175 | for (j = 0; j < total; j++) { | |
176 | err = fdt_get_mem_rsv(fdt, j, &addr, &size); | |
177 | if (addr == initrd_start) { | |
178 | fdt_del_mem_rsv(fdt, j); | |
179 | break; | |
c28abb9c | 180 | } |
2a1a2cb6 | 181 | } |
8d04f02f | 182 | |
ce6b27a8 | 183 | err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start); |
2a1a2cb6 KG |
184 | if (err < 0) { |
185 | printf("fdt_initrd: %s\n", fdt_strerror(err)); | |
186 | return err; | |
187 | } | |
188 | ||
189 | path = fdt_getprop(fdt, nodeoffset, "linux,initrd-start", NULL); | |
190 | if ((path == NULL) || force) { | |
8aa5ec6e | 191 | tmp = cpu_to_fdt32(initrd_start); |
2a1a2cb6 KG |
192 | err = fdt_setprop(fdt, nodeoffset, |
193 | "linux,initrd-start", &tmp, sizeof(tmp)); | |
194 | if (err < 0) { | |
195 | printf("WARNING: " | |
196 | "could not set linux,initrd-start %s.\n", | |
197 | fdt_strerror(err)); | |
198 | return err; | |
199 | } | |
8aa5ec6e | 200 | tmp = cpu_to_fdt32(initrd_end); |
2a1a2cb6 KG |
201 | err = fdt_setprop(fdt, nodeoffset, |
202 | "linux,initrd-end", &tmp, sizeof(tmp)); | |
64dbbd40 | 203 | if (err < 0) { |
2a1a2cb6 KG |
204 | printf("WARNING: could not set linux,initrd-end %s.\n", |
205 | fdt_strerror(err)); | |
206 | ||
64dbbd40 GVB |
207 | return err; |
208 | } | |
209 | } | |
210 | ||
2a1a2cb6 KG |
211 | return 0; |
212 | } | |
213 | ||
56844a22 | 214 | int fdt_chosen(void *fdt, int force) |
2a1a2cb6 KG |
215 | { |
216 | int nodeoffset; | |
217 | int err; | |
218 | char *str; /* used to set string properties */ | |
219 | const char *path; | |
220 | ||
221 | err = fdt_check_header(fdt); | |
222 | if (err < 0) { | |
223 | printf("fdt_chosen: %s\n", fdt_strerror(err)); | |
224 | return err; | |
225 | } | |
226 | ||
64dbbd40 GVB |
227 | /* |
228 | * Find the "chosen" node. | |
229 | */ | |
8d04f02f | 230 | nodeoffset = fdt_path_offset (fdt, "/chosen"); |
64dbbd40 GVB |
231 | |
232 | /* | |
b60af3d4 | 233 | * If there is no "chosen" node in the blob, create it. |
64dbbd40 GVB |
234 | */ |
235 | if (nodeoffset < 0) { | |
236 | /* | |
237 | * Create a new node "/chosen" (offset 0 is root level) | |
238 | */ | |
239 | nodeoffset = fdt_add_subnode(fdt, 0, "chosen"); | |
240 | if (nodeoffset < 0) { | |
5fe6be62 | 241 | printf("WARNING: could not create /chosen %s.\n", |
35ec398f | 242 | fdt_strerror(nodeoffset)); |
64dbbd40 GVB |
243 | return nodeoffset; |
244 | } | |
245 | } | |
246 | ||
247 | /* | |
b60af3d4 GVB |
248 | * Create /chosen properites that don't exist in the fdt. |
249 | * If the property exists, update it only if the "force" parameter | |
250 | * is true. | |
64dbbd40 GVB |
251 | */ |
252 | str = getenv("bootargs"); | |
253 | if (str != NULL) { | |
b60af3d4 GVB |
254 | path = fdt_getprop(fdt, nodeoffset, "bootargs", NULL); |
255 | if ((path == NULL) || force) { | |
256 | err = fdt_setprop(fdt, nodeoffset, | |
257 | "bootargs", str, strlen(str)+1); | |
258 | if (err < 0) | |
259 | printf("WARNING: could not set bootargs %s.\n", | |
260 | fdt_strerror(err)); | |
261 | } | |
64dbbd40 | 262 | } |
2a1a2cb6 | 263 | |
151c8b09 | 264 | #ifdef CONFIG_OF_STDOUT_VIA_ALIAS |
b60af3d4 GVB |
265 | path = fdt_getprop(fdt, nodeoffset, "linux,stdout-path", NULL); |
266 | if ((path == NULL) || force) | |
267 | err = fdt_fixup_stdout(fdt, nodeoffset); | |
151c8b09 KG |
268 | #endif |
269 | ||
64dbbd40 | 270 | #ifdef OF_STDOUT_PATH |
b60af3d4 GVB |
271 | path = fdt_getprop(fdt, nodeoffset, "linux,stdout-path", NULL); |
272 | if ((path == NULL) || force) { | |
273 | err = fdt_setprop(fdt, nodeoffset, | |
274 | "linux,stdout-path", OF_STDOUT_PATH, strlen(OF_STDOUT_PATH)+1); | |
275 | if (err < 0) | |
276 | printf("WARNING: could not set linux,stdout-path %s.\n", | |
277 | fdt_strerror(err)); | |
278 | } | |
64dbbd40 GVB |
279 | #endif |
280 | ||
64dbbd40 GVB |
281 | return err; |
282 | } | |
283 | ||
e93becf8 KG |
284 | void do_fixup_by_path(void *fdt, const char *path, const char *prop, |
285 | const void *val, int len, int create) | |
286 | { | |
287 | #if defined(DEBUG) | |
288 | int i; | |
d9ad115b | 289 | debug("Updating property '%s/%s' = ", path, prop); |
e93becf8 KG |
290 | for (i = 0; i < len; i++) |
291 | debug(" %.2x", *(u8*)(val+i)); | |
292 | debug("\n"); | |
293 | #endif | |
294 | int rc = fdt_find_and_setprop(fdt, path, prop, val, len, create); | |
295 | if (rc) | |
296 | printf("Unable to update property %s:%s, err=%s\n", | |
297 | path, prop, fdt_strerror(rc)); | |
298 | } | |
299 | ||
300 | void do_fixup_by_path_u32(void *fdt, const char *path, const char *prop, | |
301 | u32 val, int create) | |
302 | { | |
8aa5ec6e KP |
303 | fdt32_t tmp = cpu_to_fdt32(val); |
304 | do_fixup_by_path(fdt, path, prop, &tmp, sizeof(tmp), create); | |
e93becf8 KG |
305 | } |
306 | ||
9eb77cea KG |
307 | void do_fixup_by_prop(void *fdt, |
308 | const char *pname, const void *pval, int plen, | |
309 | const char *prop, const void *val, int len, | |
310 | int create) | |
311 | { | |
312 | int off; | |
313 | #if defined(DEBUG) | |
314 | int i; | |
d9ad115b | 315 | debug("Updating property '%s' = ", prop); |
9eb77cea KG |
316 | for (i = 0; i < len; i++) |
317 | debug(" %.2x", *(u8*)(val+i)); | |
318 | debug("\n"); | |
319 | #endif | |
320 | off = fdt_node_offset_by_prop_value(fdt, -1, pname, pval, plen); | |
321 | while (off != -FDT_ERR_NOTFOUND) { | |
8aa5ec6e | 322 | if (create || (fdt_get_property(fdt, off, prop, NULL) != NULL)) |
9eb77cea KG |
323 | fdt_setprop(fdt, off, prop, val, len); |
324 | off = fdt_node_offset_by_prop_value(fdt, off, pname, pval, plen); | |
325 | } | |
326 | } | |
327 | ||
328 | void do_fixup_by_prop_u32(void *fdt, | |
329 | const char *pname, const void *pval, int plen, | |
330 | const char *prop, u32 val, int create) | |
331 | { | |
8aa5ec6e KP |
332 | fdt32_t tmp = cpu_to_fdt32(val); |
333 | do_fixup_by_prop(fdt, pname, pval, plen, prop, &tmp, 4, create); | |
9eb77cea KG |
334 | } |
335 | ||
336 | void do_fixup_by_compat(void *fdt, const char *compat, | |
337 | const char *prop, const void *val, int len, int create) | |
338 | { | |
339 | int off = -1; | |
340 | #if defined(DEBUG) | |
341 | int i; | |
d9ad115b | 342 | debug("Updating property '%s' = ", prop); |
9eb77cea KG |
343 | for (i = 0; i < len; i++) |
344 | debug(" %.2x", *(u8*)(val+i)); | |
345 | debug("\n"); | |
346 | #endif | |
347 | off = fdt_node_offset_by_compatible(fdt, -1, compat); | |
348 | while (off != -FDT_ERR_NOTFOUND) { | |
8aa5ec6e | 349 | if (create || (fdt_get_property(fdt, off, prop, NULL) != NULL)) |
9eb77cea KG |
350 | fdt_setprop(fdt, off, prop, val, len); |
351 | off = fdt_node_offset_by_compatible(fdt, off, compat); | |
352 | } | |
353 | } | |
354 | ||
355 | void do_fixup_by_compat_u32(void *fdt, const char *compat, | |
356 | const char *prop, u32 val, int create) | |
357 | { | |
8aa5ec6e KP |
358 | fdt32_t tmp = cpu_to_fdt32(val); |
359 | do_fixup_by_compat(fdt, compat, prop, &tmp, 4, create); | |
9eb77cea KG |
360 | } |
361 | ||
a6bd9e83 JR |
362 | /* |
363 | * Get cells len in bytes | |
364 | * if #NNNN-cells property is 2 then len is 8 | |
365 | * otherwise len is 4 | |
366 | */ | |
367 | static int get_cells_len(void *blob, char *nr_cells_name) | |
368 | { | |
8aa5ec6e | 369 | const fdt32_t *cell; |
a6bd9e83 JR |
370 | |
371 | cell = fdt_getprop(blob, 0, nr_cells_name, NULL); | |
de16606a | 372 | if (cell && fdt32_to_cpu(*cell) == 2) |
a6bd9e83 JR |
373 | return 8; |
374 | ||
375 | return 4; | |
376 | } | |
377 | ||
378 | /* | |
379 | * Write a 4 or 8 byte big endian cell | |
380 | */ | |
381 | static void write_cell(u8 *addr, u64 val, int size) | |
3c927281 | 382 | { |
a6bd9e83 JR |
383 | int shift = (size - 1) * 8; |
384 | while (size-- > 0) { | |
385 | *addr++ = (val >> shift) & 0xff; | |
386 | shift -= 8; | |
387 | } | |
388 | } | |
389 | ||
5e574546 DA |
390 | #ifdef CONFIG_NR_DRAM_BANKS |
391 | #define MEMORY_BANKS_MAX CONFIG_NR_DRAM_BANKS | |
392 | #else | |
8aa5ec6e | 393 | #define MEMORY_BANKS_MAX 4 |
5e574546 | 394 | #endif |
a6bd9e83 JR |
395 | int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks) |
396 | { | |
397 | int err, nodeoffset; | |
398 | int addr_cell_len, size_cell_len, len; | |
8aa5ec6e | 399 | u8 tmp[MEMORY_BANKS_MAX * 16]; /* Up to 64-bit address + 64-bit size */ |
a6bd9e83 | 400 | int bank; |
3c927281 | 401 | |
8aa5ec6e KP |
402 | if (banks > MEMORY_BANKS_MAX) { |
403 | printf("%s: num banks %d exceeds hardcoded limit %d." | |
404 | " Recompile with higher MEMORY_BANKS_MAX?\n", | |
405 | __FUNCTION__, banks, MEMORY_BANKS_MAX); | |
406 | return -1; | |
407 | } | |
408 | ||
3c927281 KG |
409 | err = fdt_check_header(blob); |
410 | if (err < 0) { | |
411 | printf("%s: %s\n", __FUNCTION__, fdt_strerror(err)); | |
412 | return err; | |
413 | } | |
414 | ||
415 | /* update, or add and update /memory node */ | |
416 | nodeoffset = fdt_path_offset(blob, "/memory"); | |
417 | if (nodeoffset < 0) { | |
418 | nodeoffset = fdt_add_subnode(blob, 0, "memory"); | |
419 | if (nodeoffset < 0) | |
420 | printf("WARNING: could not create /memory: %s.\n", | |
421 | fdt_strerror(nodeoffset)); | |
422 | return nodeoffset; | |
423 | } | |
424 | err = fdt_setprop(blob, nodeoffset, "device_type", "memory", | |
425 | sizeof("memory")); | |
426 | if (err < 0) { | |
427 | printf("WARNING: could not set %s %s.\n", "device_type", | |
428 | fdt_strerror(err)); | |
429 | return err; | |
430 | } | |
431 | ||
a6bd9e83 JR |
432 | addr_cell_len = get_cells_len(blob, "#address-cells"); |
433 | size_cell_len = get_cells_len(blob, "#size-cells"); | |
3c927281 | 434 | |
a6bd9e83 JR |
435 | for (bank = 0, len = 0; bank < banks; bank++) { |
436 | write_cell(tmp + len, start[bank], addr_cell_len); | |
437 | len += addr_cell_len; | |
438 | ||
439 | write_cell(tmp + len, size[bank], size_cell_len); | |
440 | len += size_cell_len; | |
3c927281 KG |
441 | } |
442 | ||
443 | err = fdt_setprop(blob, nodeoffset, "reg", tmp, len); | |
444 | if (err < 0) { | |
445 | printf("WARNING: could not set %s %s.\n", | |
446 | "reg", fdt_strerror(err)); | |
447 | return err; | |
448 | } | |
449 | return 0; | |
450 | } | |
451 | ||
a6bd9e83 JR |
452 | int fdt_fixup_memory(void *blob, u64 start, u64 size) |
453 | { | |
454 | return fdt_fixup_memory_banks(blob, &start, &size, 1); | |
455 | } | |
456 | ||
ba37aa03 | 457 | void fdt_fixup_ethernet(void *fdt) |
ab544633 | 458 | { |
ba37aa03 KG |
459 | int node, i, j; |
460 | char enet[16], *tmp, *end; | |
064d55f8 | 461 | char mac[16]; |
ab544633 | 462 | const char *path; |
ba37aa03 | 463 | unsigned char mac_addr[6]; |
ab544633 KG |
464 | |
465 | node = fdt_path_offset(fdt, "/aliases"); | |
ba37aa03 KG |
466 | if (node < 0) |
467 | return; | |
468 | ||
469 | i = 0; | |
064d55f8 | 470 | strcpy(mac, "ethaddr"); |
ba37aa03 KG |
471 | while ((tmp = getenv(mac)) != NULL) { |
472 | sprintf(enet, "ethernet%d", i); | |
473 | path = fdt_getprop(fdt, node, enet, NULL); | |
474 | if (!path) { | |
475 | debug("No alias for %s\n", enet); | |
476 | sprintf(mac, "eth%daddr", ++i); | |
477 | continue; | |
ab544633 | 478 | } |
ba37aa03 KG |
479 | |
480 | for (j = 0; j < 6; j++) { | |
481 | mac_addr[j] = tmp ? simple_strtoul(tmp, &end, 16) : 0; | |
482 | if (tmp) | |
483 | tmp = (*end) ? end+1 : end; | |
ab544633 | 484 | } |
ba37aa03 KG |
485 | |
486 | do_fixup_by_path(fdt, path, "mac-address", &mac_addr, 6, 0); | |
487 | do_fixup_by_path(fdt, path, "local-mac-address", | |
488 | &mac_addr, 6, 1); | |
489 | ||
490 | sprintf(mac, "eth%daddr", ++i); | |
ab544633 KG |
491 | } |
492 | } | |
18e69a35 | 493 | |
3082d234 KG |
494 | /* Resize the fdt to its actual size + a bit of padding */ |
495 | int fdt_resize(void *blob) | |
496 | { | |
497 | int i; | |
498 | uint64_t addr, size; | |
499 | int total, ret; | |
500 | uint actualsize; | |
501 | ||
502 | if (!blob) | |
503 | return 0; | |
504 | ||
505 | total = fdt_num_mem_rsv(blob); | |
506 | for (i = 0; i < total; i++) { | |
507 | fdt_get_mem_rsv(blob, i, &addr, &size); | |
92549358 | 508 | if (addr == (uintptr_t)blob) { |
3082d234 KG |
509 | fdt_del_mem_rsv(blob, i); |
510 | break; | |
511 | } | |
512 | } | |
513 | ||
f242a088 PK |
514 | /* |
515 | * Calculate the actual size of the fdt | |
3840ebfa FW |
516 | * plus the size needed for 5 fdt_add_mem_rsv, one |
517 | * for the fdt itself and 4 for a possible initrd | |
518 | * ((initrd-start + initrd-end) * 2 (name & value)) | |
f242a088 | 519 | */ |
3082d234 | 520 | actualsize = fdt_off_dt_strings(blob) + |
3840ebfa | 521 | fdt_size_dt_strings(blob) + 5 * sizeof(struct fdt_reserve_entry); |
3082d234 KG |
522 | |
523 | /* Make it so the fdt ends on a page boundary */ | |
92549358 SG |
524 | actualsize = ALIGN(actualsize + ((uintptr_t)blob & 0xfff), 0x1000); |
525 | actualsize = actualsize - ((uintptr_t)blob & 0xfff); | |
3082d234 KG |
526 | |
527 | /* Change the fdt header to reflect the correct size */ | |
528 | fdt_set_totalsize(blob, actualsize); | |
529 | ||
530 | /* Add the new reservation */ | |
92549358 | 531 | ret = fdt_add_mem_rsv(blob, (uintptr_t)blob, actualsize); |
3082d234 KG |
532 | if (ret < 0) |
533 | return ret; | |
534 | ||
535 | return actualsize; | |
536 | } | |
8ab451c4 KG |
537 | |
538 | #ifdef CONFIG_PCI | |
cfd700be | 539 | #define CONFIG_SYS_PCI_NR_INBOUND_WIN 4 |
8ab451c4 KG |
540 | |
541 | #define FDT_PCI_PREFETCH (0x40000000) | |
542 | #define FDT_PCI_MEM32 (0x02000000) | |
543 | #define FDT_PCI_IO (0x01000000) | |
544 | #define FDT_PCI_MEM64 (0x03000000) | |
545 | ||
546 | int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose) { | |
547 | ||
548 | int addrcell, sizecell, len, r; | |
549 | u32 *dma_range; | |
550 | /* sized based on pci addr cells, size-cells, & address-cells */ | |
551 | u32 dma_ranges[(3 + 2 + 2) * CONFIG_SYS_PCI_NR_INBOUND_WIN]; | |
552 | ||
553 | addrcell = fdt_getprop_u32_default(blob, "/", "#address-cells", 1); | |
554 | sizecell = fdt_getprop_u32_default(blob, "/", "#size-cells", 1); | |
555 | ||
556 | dma_range = &dma_ranges[0]; | |
557 | for (r = 0; r < hose->region_count; r++) { | |
558 | u64 bus_start, phys_start, size; | |
559 | ||
ff4e66e9 KG |
560 | /* skip if !PCI_REGION_SYS_MEMORY */ |
561 | if (!(hose->regions[r].flags & PCI_REGION_SYS_MEMORY)) | |
8ab451c4 KG |
562 | continue; |
563 | ||
564 | bus_start = (u64)hose->regions[r].bus_start; | |
565 | phys_start = (u64)hose->regions[r].phys_start; | |
566 | size = (u64)hose->regions[r].size; | |
567 | ||
568 | dma_range[0] = 0; | |
cfd700be | 569 | if (size >= 0x100000000ull) |
8ab451c4 KG |
570 | dma_range[0] |= FDT_PCI_MEM64; |
571 | else | |
572 | dma_range[0] |= FDT_PCI_MEM32; | |
573 | if (hose->regions[r].flags & PCI_REGION_PREFETCH) | |
574 | dma_range[0] |= FDT_PCI_PREFETCH; | |
575 | #ifdef CONFIG_SYS_PCI_64BIT | |
576 | dma_range[1] = bus_start >> 32; | |
577 | #else | |
578 | dma_range[1] = 0; | |
579 | #endif | |
580 | dma_range[2] = bus_start & 0xffffffff; | |
581 | ||
582 | if (addrcell == 2) { | |
583 | dma_range[3] = phys_start >> 32; | |
584 | dma_range[4] = phys_start & 0xffffffff; | |
585 | } else { | |
586 | dma_range[3] = phys_start & 0xffffffff; | |
587 | } | |
588 | ||
589 | if (sizecell == 2) { | |
590 | dma_range[3 + addrcell + 0] = size >> 32; | |
591 | dma_range[3 + addrcell + 1] = size & 0xffffffff; | |
592 | } else { | |
593 | dma_range[3 + addrcell + 0] = size & 0xffffffff; | |
594 | } | |
595 | ||
596 | dma_range += (3 + addrcell + sizecell); | |
597 | } | |
598 | ||
599 | len = dma_range - &dma_ranges[0]; | |
600 | if (len) | |
601 | fdt_setprop(blob, phb_off, "dma-ranges", &dma_ranges[0], len*4); | |
602 | ||
603 | return 0; | |
604 | } | |
605 | #endif | |
30d45c0d SR |
606 | |
607 | #ifdef CONFIG_FDT_FIXUP_NOR_FLASH_SIZE | |
8a805df1 SR |
608 | /* |
609 | * Provide a weak default function to return the flash bank size. | |
610 | * There might be multiple non-identical flash chips connected to one | |
611 | * chip-select, so we need to pass an index as well. | |
612 | */ | |
613 | u32 __flash_get_bank_size(int cs, int idx) | |
614 | { | |
615 | extern flash_info_t flash_info[]; | |
616 | ||
617 | /* | |
618 | * As default, a simple 1:1 mapping is provided. Boards with | |
619 | * a different mapping need to supply a board specific mapping | |
620 | * routine. | |
621 | */ | |
622 | return flash_info[cs].size; | |
623 | } | |
624 | u32 flash_get_bank_size(int cs, int idx) | |
625 | __attribute__((weak, alias("__flash_get_bank_size"))); | |
626 | ||
30d45c0d SR |
627 | /* |
628 | * This function can be used to update the size in the "reg" property | |
8a805df1 | 629 | * of all NOR FLASH device nodes. This is necessary for boards with |
30d45c0d SR |
630 | * non-fixed NOR FLASH sizes. |
631 | */ | |
8a805df1 | 632 | int fdt_fixup_nor_flash_size(void *blob) |
30d45c0d SR |
633 | { |
634 | char compat[][16] = { "cfi-flash", "jedec-flash" }; | |
635 | int off; | |
636 | int len; | |
637 | struct fdt_property *prop; | |
2778a014 | 638 | u32 *reg, *reg2; |
30d45c0d SR |
639 | int i; |
640 | ||
641 | for (i = 0; i < 2; i++) { | |
642 | off = fdt_node_offset_by_compatible(blob, -1, compat[i]); | |
643 | while (off != -FDT_ERR_NOTFOUND) { | |
8a805df1 SR |
644 | int idx; |
645 | ||
30d45c0d | 646 | /* |
8a805df1 SR |
647 | * Found one compatible node, so fixup the size |
648 | * int its reg properties | |
30d45c0d SR |
649 | */ |
650 | prop = fdt_get_property_w(blob, off, "reg", &len); | |
651 | if (prop) { | |
8a805df1 SR |
652 | int tuple_size = 3 * sizeof(reg); |
653 | ||
654 | /* | |
655 | * There might be multiple reg-tuples, | |
656 | * so loop through them all | |
657 | */ | |
2778a014 SR |
658 | reg = reg2 = (u32 *)&prop->data[0]; |
659 | for (idx = 0; idx < (len / tuple_size); idx++) { | |
8a805df1 SR |
660 | /* |
661 | * Update size in reg property | |
662 | */ | |
663 | reg[2] = flash_get_bank_size(reg[0], | |
664 | idx); | |
2778a014 SR |
665 | |
666 | /* | |
667 | * Point to next reg tuple | |
668 | */ | |
669 | reg += 3; | |
30d45c0d | 670 | } |
2778a014 SR |
671 | |
672 | fdt_setprop(blob, off, "reg", reg2, len); | |
30d45c0d SR |
673 | } |
674 | ||
675 | /* Move to next compatible node */ | |
676 | off = fdt_node_offset_by_compatible(blob, off, | |
677 | compat[i]); | |
678 | } | |
679 | } | |
680 | ||
8a805df1 | 681 | return 0; |
30d45c0d SR |
682 | } |
683 | #endif | |
3c950e2e | 684 | |
cb2707af MM |
685 | int fdt_increase_size(void *fdt, int add_len) |
686 | { | |
687 | int newlen; | |
688 | ||
689 | newlen = fdt_totalsize(fdt) + add_len; | |
690 | ||
691 | /* Open in place with a new len */ | |
692 | return fdt_open_into(fdt, fdt, newlen); | |
693 | } | |
694 | ||
3c950e2e AG |
695 | #ifdef CONFIG_FDT_FIXUP_PARTITIONS |
696 | #include <jffs2/load_kernel.h> | |
697 | #include <mtd_node.h> | |
698 | ||
699 | struct reg_cell { | |
700 | unsigned int r0; | |
701 | unsigned int r1; | |
702 | }; | |
703 | ||
704 | int fdt_del_subnodes(const void *blob, int parent_offset) | |
705 | { | |
706 | int off, ndepth; | |
707 | int ret; | |
708 | ||
709 | for (ndepth = 0, off = fdt_next_node(blob, parent_offset, &ndepth); | |
710 | (off >= 0) && (ndepth > 0); | |
711 | off = fdt_next_node(blob, off, &ndepth)) { | |
712 | if (ndepth == 1) { | |
713 | debug("delete %s: offset: %x\n", | |
714 | fdt_get_name(blob, off, 0), off); | |
715 | ret = fdt_del_node((void *)blob, off); | |
716 | if (ret < 0) { | |
717 | printf("Can't delete node: %s\n", | |
718 | fdt_strerror(ret)); | |
719 | return ret; | |
720 | } else { | |
721 | ndepth = 0; | |
722 | off = parent_offset; | |
723 | } | |
724 | } | |
725 | } | |
726 | return 0; | |
727 | } | |
728 | ||
3c950e2e AG |
729 | int fdt_del_partitions(void *blob, int parent_offset) |
730 | { | |
731 | const void *prop; | |
732 | int ndepth = 0; | |
733 | int off; | |
734 | int ret; | |
735 | ||
736 | off = fdt_next_node(blob, parent_offset, &ndepth); | |
737 | if (off > 0 && ndepth == 1) { | |
738 | prop = fdt_getprop(blob, off, "label", NULL); | |
739 | if (prop == NULL) { | |
740 | /* | |
741 | * Could not find label property, nand {}; node? | |
742 | * Check subnode, delete partitions there if any. | |
743 | */ | |
744 | return fdt_del_partitions(blob, off); | |
745 | } else { | |
746 | ret = fdt_del_subnodes(blob, parent_offset); | |
747 | if (ret < 0) { | |
748 | printf("Can't remove subnodes: %s\n", | |
749 | fdt_strerror(ret)); | |
750 | return ret; | |
751 | } | |
752 | } | |
753 | } | |
754 | return 0; | |
755 | } | |
756 | ||
757 | int fdt_node_set_part_info(void *blob, int parent_offset, | |
758 | struct mtd_device *dev) | |
759 | { | |
760 | struct list_head *pentry; | |
761 | struct part_info *part; | |
762 | struct reg_cell cell; | |
763 | int off, ndepth = 0; | |
764 | int part_num, ret; | |
765 | char buf[64]; | |
766 | ||
767 | ret = fdt_del_partitions(blob, parent_offset); | |
768 | if (ret < 0) | |
769 | return ret; | |
770 | ||
771 | /* | |
772 | * Check if it is nand {}; subnode, adjust | |
773 | * the offset in this case | |
774 | */ | |
775 | off = fdt_next_node(blob, parent_offset, &ndepth); | |
776 | if (off > 0 && ndepth == 1) | |
777 | parent_offset = off; | |
778 | ||
779 | part_num = 0; | |
780 | list_for_each_prev(pentry, &dev->parts) { | |
781 | int newoff; | |
782 | ||
783 | part = list_entry(pentry, struct part_info, link); | |
784 | ||
785 | debug("%2d: %-20s0x%08x\t0x%08x\t%d\n", | |
786 | part_num, part->name, part->size, | |
787 | part->offset, part->mask_flags); | |
788 | ||
789 | sprintf(buf, "partition@%x", part->offset); | |
790 | add_sub: | |
791 | ret = fdt_add_subnode(blob, parent_offset, buf); | |
792 | if (ret == -FDT_ERR_NOSPACE) { | |
793 | ret = fdt_increase_size(blob, 512); | |
794 | if (!ret) | |
795 | goto add_sub; | |
796 | else | |
797 | goto err_size; | |
798 | } else if (ret < 0) { | |
799 | printf("Can't add partition node: %s\n", | |
800 | fdt_strerror(ret)); | |
801 | return ret; | |
802 | } | |
803 | newoff = ret; | |
804 | ||
805 | /* Check MTD_WRITEABLE_CMD flag */ | |
806 | if (part->mask_flags & 1) { | |
807 | add_ro: | |
808 | ret = fdt_setprop(blob, newoff, "read_only", NULL, 0); | |
809 | if (ret == -FDT_ERR_NOSPACE) { | |
810 | ret = fdt_increase_size(blob, 512); | |
811 | if (!ret) | |
812 | goto add_ro; | |
813 | else | |
814 | goto err_size; | |
815 | } else if (ret < 0) | |
816 | goto err_prop; | |
817 | } | |
818 | ||
819 | cell.r0 = cpu_to_fdt32(part->offset); | |
820 | cell.r1 = cpu_to_fdt32(part->size); | |
821 | add_reg: | |
822 | ret = fdt_setprop(blob, newoff, "reg", &cell, sizeof(cell)); | |
823 | if (ret == -FDT_ERR_NOSPACE) { | |
824 | ret = fdt_increase_size(blob, 512); | |
825 | if (!ret) | |
826 | goto add_reg; | |
827 | else | |
828 | goto err_size; | |
829 | } else if (ret < 0) | |
830 | goto err_prop; | |
831 | ||
832 | add_label: | |
833 | ret = fdt_setprop_string(blob, newoff, "label", part->name); | |
834 | if (ret == -FDT_ERR_NOSPACE) { | |
835 | ret = fdt_increase_size(blob, 512); | |
836 | if (!ret) | |
837 | goto add_label; | |
838 | else | |
839 | goto err_size; | |
840 | } else if (ret < 0) | |
841 | goto err_prop; | |
842 | ||
843 | part_num++; | |
844 | } | |
845 | return 0; | |
846 | err_size: | |
847 | printf("Can't increase blob size: %s\n", fdt_strerror(ret)); | |
848 | return ret; | |
849 | err_prop: | |
850 | printf("Can't add property: %s\n", fdt_strerror(ret)); | |
851 | return ret; | |
852 | } | |
853 | ||
854 | /* | |
855 | * Update partitions in nor/nand nodes using info from | |
856 | * mtdparts environment variable. The nodes to update are | |
857 | * specified by node_info structure which contains mtd device | |
858 | * type and compatible string: E. g. the board code in | |
859 | * ft_board_setup() could use: | |
860 | * | |
861 | * struct node_info nodes[] = { | |
862 | * { "fsl,mpc5121-nfc", MTD_DEV_TYPE_NAND, }, | |
863 | * { "cfi-flash", MTD_DEV_TYPE_NOR, }, | |
864 | * }; | |
865 | * | |
866 | * fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes)); | |
867 | */ | |
868 | void fdt_fixup_mtdparts(void *blob, void *node_info, int node_info_size) | |
869 | { | |
870 | struct node_info *ni = node_info; | |
871 | struct mtd_device *dev; | |
872 | char *parts; | |
873 | int i, idx; | |
874 | int noff; | |
875 | ||
876 | parts = getenv("mtdparts"); | |
877 | if (!parts) | |
878 | return; | |
879 | ||
880 | if (mtdparts_init() != 0) | |
881 | return; | |
882 | ||
883 | for (i = 0; i < node_info_size; i++) { | |
884 | idx = 0; | |
885 | noff = fdt_node_offset_by_compatible(blob, -1, ni[i].compat); | |
886 | while (noff != -FDT_ERR_NOTFOUND) { | |
887 | debug("%s: %s, mtd dev type %d\n", | |
888 | fdt_get_name(blob, noff, 0), | |
889 | ni[i].compat, ni[i].type); | |
890 | dev = device_find(ni[i].type, idx++); | |
891 | if (dev) { | |
892 | if (fdt_node_set_part_info(blob, noff, dev)) | |
893 | return; /* return on error */ | |
894 | } | |
895 | ||
896 | /* Jump to next flash node */ | |
897 | noff = fdt_node_offset_by_compatible(blob, noff, | |
898 | ni[i].compat); | |
899 | } | |
900 | } | |
901 | } | |
902 | #endif | |
49b97d9c KG |
903 | |
904 | void fdt_del_node_and_alias(void *blob, const char *alias) | |
905 | { | |
906 | int off = fdt_path_offset(blob, alias); | |
907 | ||
908 | if (off < 0) | |
909 | return; | |
910 | ||
911 | fdt_del_node(blob, off); | |
912 | ||
913 | off = fdt_path_offset(blob, "/aliases"); | |
914 | fdt_delprop(blob, off, alias); | |
915 | } | |
a0342c08 KG |
916 | |
917 | /* Helper to read a big number; size is in cells (not bytes) */ | |
8aa5ec6e | 918 | static inline u64 of_read_number(const fdt32_t *cell, int size) |
a0342c08 KG |
919 | { |
920 | u64 r = 0; | |
921 | while (size--) | |
8aa5ec6e | 922 | r = (r << 32) | fdt32_to_cpu(*(cell++)); |
a0342c08 KG |
923 | return r; |
924 | } | |
925 | ||
a0342c08 KG |
926 | #define PRu64 "%llx" |
927 | ||
928 | /* Max address size we deal with */ | |
929 | #define OF_MAX_ADDR_CELLS 4 | |
930 | #define OF_BAD_ADDR ((u64)-1) | |
931 | #define OF_CHECK_COUNTS(na, ns) ((na) > 0 && (na) <= OF_MAX_ADDR_CELLS && \ | |
932 | (ns) > 0) | |
933 | ||
934 | /* Debug utility */ | |
935 | #ifdef DEBUG | |
8aa5ec6e | 936 | static void of_dump_addr(const char *s, const fdt32_t *addr, int na) |
a0342c08 KG |
937 | { |
938 | printf("%s", s); | |
939 | while(na--) | |
940 | printf(" %08x", *(addr++)); | |
941 | printf("\n"); | |
942 | } | |
943 | #else | |
8aa5ec6e | 944 | static void of_dump_addr(const char *s, const fdt32_t *addr, int na) { } |
a0342c08 KG |
945 | #endif |
946 | ||
947 | /* Callbacks for bus specific translators */ | |
948 | struct of_bus { | |
949 | const char *name; | |
950 | const char *addresses; | |
6395f318 | 951 | void (*count_cells)(void *blob, int parentoffset, |
a0342c08 | 952 | int *addrc, int *sizec); |
8aa5ec6e | 953 | u64 (*map)(fdt32_t *addr, const fdt32_t *range, |
a0342c08 | 954 | int na, int ns, int pna); |
8aa5ec6e | 955 | int (*translate)(fdt32_t *addr, u64 offset, int na); |
a0342c08 KG |
956 | }; |
957 | ||
958 | /* Default translator (generic bus) */ | |
6395f318 | 959 | static void of_bus_default_count_cells(void *blob, int parentoffset, |
a0342c08 KG |
960 | int *addrc, int *sizec) |
961 | { | |
8aa5ec6e | 962 | const fdt32_t *prop; |
6395f318 SW |
963 | |
964 | if (addrc) { | |
965 | prop = fdt_getprop(blob, parentoffset, "#address-cells", NULL); | |
966 | if (prop) | |
8aa5ec6e | 967 | *addrc = be32_to_cpup(prop); |
6395f318 SW |
968 | else |
969 | *addrc = 2; | |
970 | } | |
971 | ||
972 | if (sizec) { | |
973 | prop = fdt_getprop(blob, parentoffset, "#size-cells", NULL); | |
974 | if (prop) | |
8aa5ec6e | 975 | *sizec = be32_to_cpup(prop); |
6395f318 SW |
976 | else |
977 | *sizec = 1; | |
978 | } | |
a0342c08 KG |
979 | } |
980 | ||
8aa5ec6e | 981 | static u64 of_bus_default_map(fdt32_t *addr, const fdt32_t *range, |
a0342c08 KG |
982 | int na, int ns, int pna) |
983 | { | |
984 | u64 cp, s, da; | |
985 | ||
986 | cp = of_read_number(range, na); | |
987 | s = of_read_number(range + na + pna, ns); | |
988 | da = of_read_number(addr, na); | |
989 | ||
990 | debug("OF: default map, cp="PRu64", s="PRu64", da="PRu64"\n", | |
991 | cp, s, da); | |
992 | ||
993 | if (da < cp || da >= (cp + s)) | |
994 | return OF_BAD_ADDR; | |
995 | return da - cp; | |
996 | } | |
997 | ||
8aa5ec6e | 998 | static int of_bus_default_translate(fdt32_t *addr, u64 offset, int na) |
a0342c08 KG |
999 | { |
1000 | u64 a = of_read_number(addr, na); | |
1001 | memset(addr, 0, na * 4); | |
1002 | a += offset; | |
1003 | if (na > 1) | |
8aa5ec6e KP |
1004 | addr[na - 2] = cpu_to_fdt32(a >> 32); |
1005 | addr[na - 1] = cpu_to_fdt32(a & 0xffffffffu); | |
a0342c08 KG |
1006 | |
1007 | return 0; | |
1008 | } | |
1009 | ||
1010 | /* Array of bus specific translators */ | |
1011 | static struct of_bus of_busses[] = { | |
1012 | /* Default */ | |
1013 | { | |
1014 | .name = "default", | |
1015 | .addresses = "reg", | |
1016 | .count_cells = of_bus_default_count_cells, | |
1017 | .map = of_bus_default_map, | |
1018 | .translate = of_bus_default_translate, | |
1019 | }, | |
1020 | }; | |
1021 | ||
1022 | static int of_translate_one(void * blob, int parent, struct of_bus *bus, | |
8aa5ec6e | 1023 | struct of_bus *pbus, fdt32_t *addr, |
a0342c08 KG |
1024 | int na, int ns, int pna, const char *rprop) |
1025 | { | |
8aa5ec6e | 1026 | const fdt32_t *ranges; |
a0342c08 KG |
1027 | int rlen; |
1028 | int rone; | |
1029 | u64 offset = OF_BAD_ADDR; | |
1030 | ||
1031 | /* Normally, an absence of a "ranges" property means we are | |
1032 | * crossing a non-translatable boundary, and thus the addresses | |
1033 | * below the current not cannot be converted to CPU physical ones. | |
1034 | * Unfortunately, while this is very clear in the spec, it's not | |
1035 | * what Apple understood, and they do have things like /uni-n or | |
1036 | * /ht nodes with no "ranges" property and a lot of perfectly | |
1037 | * useable mapped devices below them. Thus we treat the absence of | |
1038 | * "ranges" as equivalent to an empty "ranges" property which means | |
1039 | * a 1:1 translation at that level. It's up to the caller not to try | |
1040 | * to translate addresses that aren't supposed to be translated in | |
1041 | * the first place. --BenH. | |
1042 | */ | |
8aa5ec6e | 1043 | ranges = fdt_getprop(blob, parent, rprop, &rlen); |
a0342c08 KG |
1044 | if (ranges == NULL || rlen == 0) { |
1045 | offset = of_read_number(addr, na); | |
1046 | memset(addr, 0, pna * 4); | |
1047 | debug("OF: no ranges, 1:1 translation\n"); | |
1048 | goto finish; | |
1049 | } | |
1050 | ||
1051 | debug("OF: walking ranges...\n"); | |
1052 | ||
1053 | /* Now walk through the ranges */ | |
1054 | rlen /= 4; | |
1055 | rone = na + pna + ns; | |
1056 | for (; rlen >= rone; rlen -= rone, ranges += rone) { | |
1057 | offset = bus->map(addr, ranges, na, ns, pna); | |
1058 | if (offset != OF_BAD_ADDR) | |
1059 | break; | |
1060 | } | |
1061 | if (offset == OF_BAD_ADDR) { | |
1062 | debug("OF: not found !\n"); | |
1063 | return 1; | |
1064 | } | |
1065 | memcpy(addr, ranges + na, 4 * pna); | |
1066 | ||
1067 | finish: | |
1068 | of_dump_addr("OF: parent translation for:", addr, pna); | |
1069 | debug("OF: with offset: "PRu64"\n", offset); | |
1070 | ||
1071 | /* Translate it into parent bus space */ | |
1072 | return pbus->translate(addr, offset, pna); | |
1073 | } | |
1074 | ||
1075 | /* | |
1076 | * Translate an address from the device-tree into a CPU physical address, | |
1077 | * this walks up the tree and applies the various bus mappings on the | |
1078 | * way. | |
1079 | * | |
1080 | * Note: We consider that crossing any level with #size-cells == 0 to mean | |
1081 | * that translation is impossible (that is we are not dealing with a value | |
1082 | * that can be mapped to a cpu physical address). This is not really specified | |
1083 | * that way, but this is traditionally the way IBM at least do things | |
1084 | */ | |
8aa5ec6e KP |
1085 | static u64 __of_translate_address(void *blob, int node_offset, const fdt32_t *in_addr, |
1086 | const char *rprop) | |
a0342c08 KG |
1087 | { |
1088 | int parent; | |
1089 | struct of_bus *bus, *pbus; | |
8aa5ec6e | 1090 | fdt32_t addr[OF_MAX_ADDR_CELLS]; |
a0342c08 KG |
1091 | int na, ns, pna, pns; |
1092 | u64 result = OF_BAD_ADDR; | |
1093 | ||
1094 | debug("OF: ** translation for device %s **\n", | |
1095 | fdt_get_name(blob, node_offset, NULL)); | |
1096 | ||
1097 | /* Get parent & match bus type */ | |
1098 | parent = fdt_parent_offset(blob, node_offset); | |
1099 | if (parent < 0) | |
1100 | goto bail; | |
1101 | bus = &of_busses[0]; | |
1102 | ||
1103 | /* Cound address cells & copy address locally */ | |
6395f318 | 1104 | bus->count_cells(blob, parent, &na, &ns); |
a0342c08 KG |
1105 | if (!OF_CHECK_COUNTS(na, ns)) { |
1106 | printf("%s: Bad cell count for %s\n", __FUNCTION__, | |
1107 | fdt_get_name(blob, node_offset, NULL)); | |
1108 | goto bail; | |
1109 | } | |
1110 | memcpy(addr, in_addr, na * 4); | |
1111 | ||
1112 | debug("OF: bus is %s (na=%d, ns=%d) on %s\n", | |
1113 | bus->name, na, ns, fdt_get_name(blob, parent, NULL)); | |
1114 | of_dump_addr("OF: translating address:", addr, na); | |
1115 | ||
1116 | /* Translate */ | |
1117 | for (;;) { | |
1118 | /* Switch to parent bus */ | |
1119 | node_offset = parent; | |
1120 | parent = fdt_parent_offset(blob, node_offset); | |
1121 | ||
1122 | /* If root, we have finished */ | |
1123 | if (parent < 0) { | |
1124 | debug("OF: reached root node\n"); | |
1125 | result = of_read_number(addr, na); | |
1126 | break; | |
1127 | } | |
1128 | ||
1129 | /* Get new parent bus and counts */ | |
1130 | pbus = &of_busses[0]; | |
6395f318 | 1131 | pbus->count_cells(blob, parent, &pna, &pns); |
a0342c08 KG |
1132 | if (!OF_CHECK_COUNTS(pna, pns)) { |
1133 | printf("%s: Bad cell count for %s\n", __FUNCTION__, | |
1134 | fdt_get_name(blob, node_offset, NULL)); | |
1135 | break; | |
1136 | } | |
1137 | ||
1138 | debug("OF: parent bus is %s (na=%d, ns=%d) on %s\n", | |
1139 | pbus->name, pna, pns, fdt_get_name(blob, parent, NULL)); | |
1140 | ||
1141 | /* Apply bus translation */ | |
1142 | if (of_translate_one(blob, node_offset, bus, pbus, | |
1143 | addr, na, ns, pna, rprop)) | |
1144 | break; | |
1145 | ||
1146 | /* Complete the move up one level */ | |
1147 | na = pna; | |
1148 | ns = pns; | |
1149 | bus = pbus; | |
1150 | ||
1151 | of_dump_addr("OF: one level translation:", addr, na); | |
1152 | } | |
1153 | bail: | |
1154 | ||
1155 | return result; | |
1156 | } | |
1157 | ||
8aa5ec6e | 1158 | u64 fdt_translate_address(void *blob, int node_offset, const fdt32_t *in_addr) |
a0342c08 KG |
1159 | { |
1160 | return __of_translate_address(blob, node_offset, in_addr, "ranges"); | |
1161 | } | |
75e73afd KG |
1162 | |
1163 | /** | |
1164 | * fdt_node_offset_by_compat_reg: Find a node that matches compatiable and | |
1165 | * who's reg property matches a physical cpu address | |
1166 | * | |
1167 | * @blob: ptr to device tree | |
1168 | * @compat: compatiable string to match | |
1169 | * @compat_off: property name | |
1170 | * | |
1171 | */ | |
1172 | int fdt_node_offset_by_compat_reg(void *blob, const char *compat, | |
1173 | phys_addr_t compat_off) | |
1174 | { | |
1175 | int len, off = fdt_node_offset_by_compatible(blob, -1, compat); | |
1176 | while (off != -FDT_ERR_NOTFOUND) { | |
8aa5ec6e | 1177 | const fdt32_t *reg = fdt_getprop(blob, off, "reg", &len); |
75e73afd KG |
1178 | if (reg) { |
1179 | if (compat_off == fdt_translate_address(blob, off, reg)) | |
1180 | return off; | |
1181 | } | |
1182 | off = fdt_node_offset_by_compatible(blob, off, compat); | |
1183 | } | |
1184 | ||
1185 | return -FDT_ERR_NOTFOUND; | |
1186 | } | |
1187 | ||
b4b847e9 KG |
1188 | /** |
1189 | * fdt_alloc_phandle: Return next free phandle value | |
1190 | * | |
1191 | * @blob: ptr to device tree | |
1192 | */ | |
1193 | int fdt_alloc_phandle(void *blob) | |
1194 | { | |
50bf17bd | 1195 | int offset, phandle = 0; |
b4b847e9 KG |
1196 | |
1197 | for (offset = fdt_next_node(blob, -1, NULL); offset >= 0; | |
1198 | offset = fdt_next_node(blob, offset, NULL)) { | |
50bf17bd | 1199 | phandle = max(phandle, fdt_get_phandle(blob, offset)); |
b4b847e9 | 1200 | } |
75e73afd | 1201 | |
b4b847e9 KG |
1202 | return phandle + 1; |
1203 | } | |
beca5a5f | 1204 | |
a8d2a75d | 1205 | /* |
f117c0f0 | 1206 | * fdt_set_phandle: Create a phandle property for the given node |
a8d2a75d GVB |
1207 | * |
1208 | * @fdt: ptr to device tree | |
1209 | * @nodeoffset: node to update | |
1210 | * @phandle: phandle value to set (must be unique) | |
f117c0f0 KG |
1211 | */ |
1212 | int fdt_set_phandle(void *fdt, int nodeoffset, uint32_t phandle) | |
a8d2a75d GVB |
1213 | { |
1214 | int ret; | |
1215 | ||
1216 | #ifdef DEBUG | |
1217 | int off = fdt_node_offset_by_phandle(fdt, phandle); | |
1218 | ||
1219 | if ((off >= 0) && (off != nodeoffset)) { | |
1220 | char buf[64]; | |
1221 | ||
1222 | fdt_get_path(fdt, nodeoffset, buf, sizeof(buf)); | |
1223 | printf("Trying to update node %s with phandle %u ", | |
1224 | buf, phandle); | |
1225 | ||
1226 | fdt_get_path(fdt, off, buf, sizeof(buf)); | |
1227 | printf("that already exists in node %s.\n", buf); | |
1228 | return -FDT_ERR_BADPHANDLE; | |
1229 | } | |
1230 | #endif | |
1231 | ||
1232 | ret = fdt_setprop_cell(fdt, nodeoffset, "phandle", phandle); | |
1233 | if (ret < 0) | |
1234 | return ret; | |
1235 | ||
1236 | /* | |
1237 | * For now, also set the deprecated "linux,phandle" property, so that we | |
1238 | * don't break older kernels. | |
1239 | */ | |
1240 | ret = fdt_setprop_cell(fdt, nodeoffset, "linux,phandle", phandle); | |
1241 | ||
1242 | return ret; | |
1243 | } | |
1244 | ||
10aeabd1 KG |
1245 | /* |
1246 | * fdt_create_phandle: Create a phandle property for the given node | |
1247 | * | |
1248 | * @fdt: ptr to device tree | |
1249 | * @nodeoffset: node to update | |
1250 | */ | |
3c927ccc | 1251 | unsigned int fdt_create_phandle(void *fdt, int nodeoffset) |
10aeabd1 KG |
1252 | { |
1253 | /* see if there is a phandle already */ | |
1254 | int phandle = fdt_get_phandle(fdt, nodeoffset); | |
1255 | ||
1256 | /* if we got 0, means no phandle so create one */ | |
1257 | if (phandle == 0) { | |
3c927ccc TT |
1258 | int ret; |
1259 | ||
10aeabd1 | 1260 | phandle = fdt_alloc_phandle(fdt); |
3c927ccc TT |
1261 | ret = fdt_set_phandle(fdt, nodeoffset, phandle); |
1262 | if (ret < 0) { | |
1263 | printf("Can't set phandle %u: %s\n", phandle, | |
1264 | fdt_strerror(ret)); | |
1265 | return 0; | |
1266 | } | |
10aeabd1 KG |
1267 | } |
1268 | ||
1269 | return phandle; | |
1270 | } | |
1271 | ||
2a523f52 SL |
1272 | /* |
1273 | * fdt_set_node_status: Set status for the given node | |
1274 | * | |
1275 | * @fdt: ptr to device tree | |
1276 | * @nodeoffset: node to update | |
1277 | * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED, | |
1278 | * FDT_STATUS_FAIL, FDT_STATUS_FAIL_ERROR_CODE | |
1279 | * @error_code: optional, only used if status is FDT_STATUS_FAIL_ERROR_CODE | |
1280 | */ | |
1281 | int fdt_set_node_status(void *fdt, int nodeoffset, | |
1282 | enum fdt_status status, unsigned int error_code) | |
1283 | { | |
1284 | char buf[16]; | |
1285 | int ret = 0; | |
1286 | ||
1287 | if (nodeoffset < 0) | |
1288 | return nodeoffset; | |
1289 | ||
1290 | switch (status) { | |
1291 | case FDT_STATUS_OKAY: | |
1292 | ret = fdt_setprop_string(fdt, nodeoffset, "status", "okay"); | |
1293 | break; | |
1294 | case FDT_STATUS_DISABLED: | |
1295 | ret = fdt_setprop_string(fdt, nodeoffset, "status", "disabled"); | |
1296 | break; | |
1297 | case FDT_STATUS_FAIL: | |
1298 | ret = fdt_setprop_string(fdt, nodeoffset, "status", "fail"); | |
1299 | break; | |
1300 | case FDT_STATUS_FAIL_ERROR_CODE: | |
1301 | sprintf(buf, "fail-%d", error_code); | |
1302 | ret = fdt_setprop_string(fdt, nodeoffset, "status", buf); | |
1303 | break; | |
1304 | default: | |
1305 | printf("Invalid fdt status: %x\n", status); | |
1306 | ret = -1; | |
1307 | break; | |
1308 | } | |
1309 | ||
1310 | return ret; | |
1311 | } | |
1312 | ||
1313 | /* | |
1314 | * fdt_set_status_by_alias: Set status for the given node given an alias | |
1315 | * | |
1316 | * @fdt: ptr to device tree | |
1317 | * @alias: alias of node to update | |
1318 | * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED, | |
1319 | * FDT_STATUS_FAIL, FDT_STATUS_FAIL_ERROR_CODE | |
1320 | * @error_code: optional, only used if status is FDT_STATUS_FAIL_ERROR_CODE | |
1321 | */ | |
1322 | int fdt_set_status_by_alias(void *fdt, const char* alias, | |
1323 | enum fdt_status status, unsigned int error_code) | |
1324 | { | |
1325 | int offset = fdt_path_offset(fdt, alias); | |
1326 | ||
1327 | return fdt_set_node_status(fdt, offset, status, error_code); | |
1328 | } | |
1329 | ||
096eb3f5 | 1330 | #if defined(CONFIG_VIDEO) || defined(CONFIG_LCD) |
beca5a5f AG |
1331 | int fdt_add_edid(void *blob, const char *compat, unsigned char *edid_buf) |
1332 | { | |
1333 | int noff; | |
1334 | int ret; | |
1335 | ||
1336 | noff = fdt_node_offset_by_compatible(blob, -1, compat); | |
1337 | if (noff != -FDT_ERR_NOTFOUND) { | |
1338 | debug("%s: %s\n", fdt_get_name(blob, noff, 0), compat); | |
1339 | add_edid: | |
1340 | ret = fdt_setprop(blob, noff, "edid", edid_buf, 128); | |
1341 | if (ret == -FDT_ERR_NOSPACE) { | |
1342 | ret = fdt_increase_size(blob, 512); | |
1343 | if (!ret) | |
1344 | goto add_edid; | |
1345 | else | |
1346 | goto err_size; | |
1347 | } else if (ret < 0) { | |
1348 | printf("Can't add property: %s\n", fdt_strerror(ret)); | |
1349 | return ret; | |
1350 | } | |
1351 | } | |
1352 | return 0; | |
1353 | err_size: | |
1354 | printf("Can't increase blob size: %s\n", fdt_strerror(ret)); | |
1355 | return ret; | |
1356 | } | |
1357 | #endif | |
bb682001 TT |
1358 | |
1359 | /* | |
1360 | * Verify the physical address of device tree node for a given alias | |
1361 | * | |
1362 | * This function locates the device tree node of a given alias, and then | |
1363 | * verifies that the physical address of that device matches the given | |
1364 | * parameter. It displays a message if there is a mismatch. | |
1365 | * | |
1366 | * Returns 1 on success, 0 on failure | |
1367 | */ | |
1368 | int fdt_verify_alias_address(void *fdt, int anode, const char *alias, u64 addr) | |
1369 | { | |
1370 | const char *path; | |
8aa5ec6e | 1371 | const fdt32_t *reg; |
bb682001 TT |
1372 | int node, len; |
1373 | u64 dt_addr; | |
1374 | ||
1375 | path = fdt_getprop(fdt, anode, alias, NULL); | |
1376 | if (!path) { | |
1377 | /* If there's no such alias, then it's not a failure */ | |
1378 | return 1; | |
1379 | } | |
1380 | ||
1381 | node = fdt_path_offset(fdt, path); | |
1382 | if (node < 0) { | |
1383 | printf("Warning: device tree alias '%s' points to invalid " | |
1384 | "node %s.\n", alias, path); | |
1385 | return 0; | |
1386 | } | |
1387 | ||
1388 | reg = fdt_getprop(fdt, node, "reg", &len); | |
1389 | if (!reg) { | |
1390 | printf("Warning: device tree node '%s' has no address.\n", | |
1391 | path); | |
1392 | return 0; | |
1393 | } | |
1394 | ||
1395 | dt_addr = fdt_translate_address(fdt, node, reg); | |
1396 | if (addr != dt_addr) { | |
1397 | printf("Warning: U-Boot configured device %s at address %llx,\n" | |
1398 | " but the device tree has it address %llx.\n", | |
1399 | alias, addr, dt_addr); | |
1400 | return 0; | |
1401 | } | |
1402 | ||
1403 | return 1; | |
1404 | } | |
1405 | ||
1406 | /* | |
1407 | * Returns the base address of an SOC or PCI node | |
1408 | */ | |
1409 | u64 fdt_get_base_address(void *fdt, int node) | |
1410 | { | |
1411 | int size; | |
1412 | u32 naddr; | |
8aa5ec6e | 1413 | const fdt32_t *prop; |
bb682001 TT |
1414 | |
1415 | prop = fdt_getprop(fdt, node, "#address-cells", &size); | |
1416 | if (prop && size == 4) | |
8aa5ec6e | 1417 | naddr = be32_to_cpup(prop); |
bb682001 TT |
1418 | else |
1419 | naddr = 2; | |
1420 | ||
1421 | prop = fdt_getprop(fdt, node, "ranges", &size); | |
1422 | ||
1423 | return prop ? fdt_translate_address(fdt, node, prop + naddr) : 0; | |
1424 | } |