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Commit | Line | Data |
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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 | * |
1a459660 | 7 | * SPDX-License-Identifier: GPL-2.0+ |
64dbbd40 GVB |
8 | */ |
9 | ||
10 | #include <common.h> | |
3e303f74 | 11 | #include <stdio_dev.h> |
64dbbd40 GVB |
12 | #include <linux/ctype.h> |
13 | #include <linux/types.h> | |
64dbbd40 | 14 | #include <asm/global_data.h> |
64dbbd40 GVB |
15 | #include <libfdt.h> |
16 | #include <fdt_support.h> | |
151c8b09 | 17 | #include <exports.h> |
64dbbd40 GVB |
18 | |
19 | /* | |
20 | * Global data (for the gd->bd) | |
21 | */ | |
22 | DECLARE_GLOBAL_DATA_PTR; | |
23 | ||
f77a606a DF |
24 | /* |
25 | * Get cells len in bytes | |
26 | * if #NNNN-cells property is 2 then len is 8 | |
27 | * otherwise len is 4 | |
28 | */ | |
29 | static int get_cells_len(void *blob, char *nr_cells_name) | |
30 | { | |
31 | const fdt32_t *cell; | |
32 | ||
33 | cell = fdt_getprop(blob, 0, nr_cells_name, NULL); | |
34 | if (cell && fdt32_to_cpu(*cell) == 2) | |
35 | return 8; | |
36 | ||
37 | return 4; | |
38 | } | |
39 | ||
40 | /* | |
41 | * Write a 4 or 8 byte big endian cell | |
42 | */ | |
43 | static void write_cell(u8 *addr, u64 val, int size) | |
44 | { | |
45 | int shift = (size - 1) * 8; | |
46 | while (size-- > 0) { | |
47 | *addr++ = (val >> shift) & 0xff; | |
48 | shift -= 8; | |
49 | } | |
50 | } | |
51 | ||
3bed2aaf KG |
52 | /** |
53 | * fdt_getprop_u32_default - Find a node and return it's property or a default | |
54 | * | |
55 | * @fdt: ptr to device tree | |
56 | * @path: path of node | |
57 | * @prop: property name | |
58 | * @dflt: default value if the property isn't found | |
59 | * | |
60 | * Convenience function to find a node and return it's property or a | |
61 | * default value if it doesn't exist. | |
62 | */ | |
07e12784 GB |
63 | u32 fdt_getprop_u32_default(const void *fdt, const char *path, |
64 | const char *prop, const u32 dflt) | |
3bed2aaf | 65 | { |
8aa5ec6e | 66 | const fdt32_t *val; |
3bed2aaf KG |
67 | int off; |
68 | ||
69 | off = fdt_path_offset(fdt, path); | |
70 | if (off < 0) | |
71 | return dflt; | |
72 | ||
73 | val = fdt_getprop(fdt, off, prop, NULL); | |
74 | if (val) | |
de16606a | 75 | return fdt32_to_cpu(*val); |
3bed2aaf KG |
76 | else |
77 | return dflt; | |
78 | } | |
64dbbd40 | 79 | |
a3c2933e KG |
80 | /** |
81 | * fdt_find_and_setprop: Find a node and set it's property | |
82 | * | |
83 | * @fdt: ptr to device tree | |
84 | * @node: path of node | |
85 | * @prop: property name | |
86 | * @val: ptr to new value | |
87 | * @len: length of new property value | |
88 | * @create: flag to create the property if it doesn't exist | |
89 | * | |
90 | * Convenience function to directly set a property given the path to the node. | |
91 | */ | |
92 | int fdt_find_and_setprop(void *fdt, const char *node, const char *prop, | |
93 | const void *val, int len, int create) | |
94 | { | |
8d04f02f | 95 | int nodeoff = fdt_path_offset(fdt, node); |
a3c2933e KG |
96 | |
97 | if (nodeoff < 0) | |
98 | return nodeoff; | |
99 | ||
8aa5ec6e | 100 | if ((!create) && (fdt_get_property(fdt, nodeoff, prop, NULL) == NULL)) |
a3c2933e KG |
101 | return 0; /* create flag not set; so exit quietly */ |
102 | ||
103 | return fdt_setprop(fdt, nodeoff, prop, val, len); | |
104 | } | |
105 | ||
151c8b09 | 106 | #ifdef CONFIG_OF_STDOUT_VIA_ALIAS |
3e303f74 | 107 | |
036036d7 | 108 | #ifdef CONFIG_CONS_INDEX |
3e303f74 AV |
109 | static void fdt_fill_multisername(char *sername, size_t maxlen) |
110 | { | |
111 | const char *outname = stdio_devices[stdout]->name; | |
112 | ||
113 | if (strcmp(outname, "serial") > 0) | |
114 | strncpy(sername, outname, maxlen); | |
115 | ||
116 | /* eserial? */ | |
117 | if (strcmp(outname + 1, "serial") > 0) | |
118 | strncpy(sername, outname + 1, maxlen); | |
119 | } | |
036036d7 | 120 | #endif |
3e303f74 | 121 | |
40777812 | 122 | static int fdt_fixup_stdout(void *fdt, int chosenoff) |
151c8b09 KG |
123 | { |
124 | int err = 0; | |
125 | #ifdef CONFIG_CONS_INDEX | |
126 | int node; | |
127 | char sername[9] = { 0 }; | |
128 | const char *path; | |
129 | ||
3e303f74 AV |
130 | fdt_fill_multisername(sername, sizeof(sername) - 1); |
131 | if (!sername[0]) | |
132 | sprintf(sername, "serial%d", CONFIG_CONS_INDEX - 1); | |
151c8b09 KG |
133 | |
134 | err = node = fdt_path_offset(fdt, "/aliases"); | |
135 | if (node >= 0) { | |
136 | int len; | |
137 | path = fdt_getprop(fdt, node, sername, &len); | |
138 | if (path) { | |
139 | char *p = malloc(len); | |
140 | err = -FDT_ERR_NOSPACE; | |
141 | if (p) { | |
142 | memcpy(p, path, len); | |
40777812 | 143 | err = fdt_setprop(fdt, chosenoff, |
151c8b09 KG |
144 | "linux,stdout-path", p, len); |
145 | free(p); | |
146 | } | |
147 | } else { | |
148 | err = len; | |
149 | } | |
150 | } | |
151 | #endif | |
152 | if (err < 0) | |
153 | printf("WARNING: could not set linux,stdout-path %s.\n", | |
154 | fdt_strerror(err)); | |
155 | ||
156 | return err; | |
157 | } | |
158 | #endif | |
159 | ||
2a1a2cb6 | 160 | int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end, int force) |
64dbbd40 | 161 | { |
f77a606a | 162 | int nodeoffset, addr_cell_len; |
2a1a2cb6 | 163 | int err, j, total; |
f77a606a | 164 | fdt64_t tmp; |
b60af3d4 | 165 | const char *path; |
2a1a2cb6 | 166 | uint64_t addr, size; |
64dbbd40 | 167 | |
2a1a2cb6 KG |
168 | /* Find the "chosen" node. */ |
169 | nodeoffset = fdt_path_offset (fdt, "/chosen"); | |
170 | ||
171 | /* If there is no "chosen" node in the blob return */ | |
172 | if (nodeoffset < 0) { | |
173 | printf("fdt_initrd: %s\n", fdt_strerror(nodeoffset)); | |
174 | return nodeoffset; | |
64dbbd40 GVB |
175 | } |
176 | ||
2a1a2cb6 KG |
177 | /* just return if initrd_start/end aren't valid */ |
178 | if ((initrd_start == 0) || (initrd_end == 0)) | |
179 | return 0; | |
c28abb9c | 180 | |
2a1a2cb6 KG |
181 | total = fdt_num_mem_rsv(fdt); |
182 | ||
183 | /* | |
184 | * Look for an existing entry and update it. If we don't find | |
185 | * the entry, we will j be the next available slot. | |
186 | */ | |
187 | for (j = 0; j < total; j++) { | |
188 | err = fdt_get_mem_rsv(fdt, j, &addr, &size); | |
189 | if (addr == initrd_start) { | |
190 | fdt_del_mem_rsv(fdt, j); | |
191 | break; | |
c28abb9c | 192 | } |
2a1a2cb6 | 193 | } |
8d04f02f | 194 | |
ce6b27a8 | 195 | err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start); |
2a1a2cb6 KG |
196 | if (err < 0) { |
197 | printf("fdt_initrd: %s\n", fdt_strerror(err)); | |
198 | return err; | |
199 | } | |
200 | ||
f77a606a DF |
201 | addr_cell_len = get_cells_len(fdt, "#address-cells"); |
202 | ||
2a1a2cb6 KG |
203 | path = fdt_getprop(fdt, nodeoffset, "linux,initrd-start", NULL); |
204 | if ((path == NULL) || force) { | |
f77a606a | 205 | write_cell((u8 *)&tmp, initrd_start, addr_cell_len); |
2a1a2cb6 | 206 | err = fdt_setprop(fdt, nodeoffset, |
be6d4266 | 207 | "linux,initrd-start", &tmp, addr_cell_len); |
2a1a2cb6 KG |
208 | if (err < 0) { |
209 | printf("WARNING: " | |
210 | "could not set linux,initrd-start %s.\n", | |
211 | fdt_strerror(err)); | |
212 | return err; | |
213 | } | |
f77a606a | 214 | write_cell((u8 *)&tmp, initrd_end, addr_cell_len); |
2a1a2cb6 | 215 | err = fdt_setprop(fdt, nodeoffset, |
be6d4266 | 216 | "linux,initrd-end", &tmp, addr_cell_len); |
64dbbd40 | 217 | if (err < 0) { |
2a1a2cb6 KG |
218 | printf("WARNING: could not set linux,initrd-end %s.\n", |
219 | fdt_strerror(err)); | |
220 | ||
64dbbd40 GVB |
221 | return err; |
222 | } | |
223 | } | |
224 | ||
2a1a2cb6 KG |
225 | return 0; |
226 | } | |
227 | ||
56844a22 | 228 | int fdt_chosen(void *fdt, int force) |
2a1a2cb6 KG |
229 | { |
230 | int nodeoffset; | |
231 | int err; | |
232 | char *str; /* used to set string properties */ | |
233 | const char *path; | |
234 | ||
235 | err = fdt_check_header(fdt); | |
236 | if (err < 0) { | |
237 | printf("fdt_chosen: %s\n", fdt_strerror(err)); | |
238 | return err; | |
239 | } | |
240 | ||
64dbbd40 GVB |
241 | /* |
242 | * Find the "chosen" node. | |
243 | */ | |
8d04f02f | 244 | nodeoffset = fdt_path_offset (fdt, "/chosen"); |
64dbbd40 GVB |
245 | |
246 | /* | |
b60af3d4 | 247 | * If there is no "chosen" node in the blob, create it. |
64dbbd40 GVB |
248 | */ |
249 | if (nodeoffset < 0) { | |
250 | /* | |
251 | * Create a new node "/chosen" (offset 0 is root level) | |
252 | */ | |
253 | nodeoffset = fdt_add_subnode(fdt, 0, "chosen"); | |
254 | if (nodeoffset < 0) { | |
5fe6be62 | 255 | printf("WARNING: could not create /chosen %s.\n", |
35ec398f | 256 | fdt_strerror(nodeoffset)); |
64dbbd40 GVB |
257 | return nodeoffset; |
258 | } | |
259 | } | |
260 | ||
261 | /* | |
b60af3d4 GVB |
262 | * Create /chosen properites that don't exist in the fdt. |
263 | * If the property exists, update it only if the "force" parameter | |
264 | * is true. | |
64dbbd40 GVB |
265 | */ |
266 | str = getenv("bootargs"); | |
267 | if (str != NULL) { | |
b60af3d4 GVB |
268 | path = fdt_getprop(fdt, nodeoffset, "bootargs", NULL); |
269 | if ((path == NULL) || force) { | |
270 | err = fdt_setprop(fdt, nodeoffset, | |
271 | "bootargs", str, strlen(str)+1); | |
272 | if (err < 0) | |
273 | printf("WARNING: could not set bootargs %s.\n", | |
274 | fdt_strerror(err)); | |
275 | } | |
64dbbd40 | 276 | } |
2a1a2cb6 | 277 | |
151c8b09 | 278 | #ifdef CONFIG_OF_STDOUT_VIA_ALIAS |
b60af3d4 GVB |
279 | path = fdt_getprop(fdt, nodeoffset, "linux,stdout-path", NULL); |
280 | if ((path == NULL) || force) | |
281 | err = fdt_fixup_stdout(fdt, nodeoffset); | |
151c8b09 KG |
282 | #endif |
283 | ||
64dbbd40 | 284 | #ifdef OF_STDOUT_PATH |
b60af3d4 GVB |
285 | path = fdt_getprop(fdt, nodeoffset, "linux,stdout-path", NULL); |
286 | if ((path == NULL) || force) { | |
287 | err = fdt_setprop(fdt, nodeoffset, | |
288 | "linux,stdout-path", OF_STDOUT_PATH, strlen(OF_STDOUT_PATH)+1); | |
289 | if (err < 0) | |
290 | printf("WARNING: could not set linux,stdout-path %s.\n", | |
291 | fdt_strerror(err)); | |
292 | } | |
64dbbd40 GVB |
293 | #endif |
294 | ||
64dbbd40 GVB |
295 | return err; |
296 | } | |
297 | ||
e93becf8 KG |
298 | void do_fixup_by_path(void *fdt, const char *path, const char *prop, |
299 | const void *val, int len, int create) | |
300 | { | |
301 | #if defined(DEBUG) | |
302 | int i; | |
d9ad115b | 303 | debug("Updating property '%s/%s' = ", path, prop); |
e93becf8 KG |
304 | for (i = 0; i < len; i++) |
305 | debug(" %.2x", *(u8*)(val+i)); | |
306 | debug("\n"); | |
307 | #endif | |
308 | int rc = fdt_find_and_setprop(fdt, path, prop, val, len, create); | |
309 | if (rc) | |
310 | printf("Unable to update property %s:%s, err=%s\n", | |
311 | path, prop, fdt_strerror(rc)); | |
312 | } | |
313 | ||
314 | void do_fixup_by_path_u32(void *fdt, const char *path, const char *prop, | |
315 | u32 val, int create) | |
316 | { | |
8aa5ec6e KP |
317 | fdt32_t tmp = cpu_to_fdt32(val); |
318 | do_fixup_by_path(fdt, path, prop, &tmp, sizeof(tmp), create); | |
e93becf8 KG |
319 | } |
320 | ||
9eb77cea KG |
321 | void do_fixup_by_prop(void *fdt, |
322 | const char *pname, const void *pval, int plen, | |
323 | const char *prop, const void *val, int len, | |
324 | int create) | |
325 | { | |
326 | int off; | |
327 | #if defined(DEBUG) | |
328 | int i; | |
d9ad115b | 329 | debug("Updating property '%s' = ", prop); |
9eb77cea KG |
330 | for (i = 0; i < len; i++) |
331 | debug(" %.2x", *(u8*)(val+i)); | |
332 | debug("\n"); | |
333 | #endif | |
334 | off = fdt_node_offset_by_prop_value(fdt, -1, pname, pval, plen); | |
335 | while (off != -FDT_ERR_NOTFOUND) { | |
8aa5ec6e | 336 | if (create || (fdt_get_property(fdt, off, prop, NULL) != NULL)) |
9eb77cea KG |
337 | fdt_setprop(fdt, off, prop, val, len); |
338 | off = fdt_node_offset_by_prop_value(fdt, off, pname, pval, plen); | |
339 | } | |
340 | } | |
341 | ||
342 | void do_fixup_by_prop_u32(void *fdt, | |
343 | const char *pname, const void *pval, int plen, | |
344 | const char *prop, u32 val, int create) | |
345 | { | |
8aa5ec6e KP |
346 | fdt32_t tmp = cpu_to_fdt32(val); |
347 | do_fixup_by_prop(fdt, pname, pval, plen, prop, &tmp, 4, create); | |
9eb77cea KG |
348 | } |
349 | ||
350 | void do_fixup_by_compat(void *fdt, const char *compat, | |
351 | const char *prop, const void *val, int len, int create) | |
352 | { | |
353 | int off = -1; | |
354 | #if defined(DEBUG) | |
355 | int i; | |
d9ad115b | 356 | debug("Updating property '%s' = ", prop); |
9eb77cea KG |
357 | for (i = 0; i < len; i++) |
358 | debug(" %.2x", *(u8*)(val+i)); | |
359 | debug("\n"); | |
360 | #endif | |
361 | off = fdt_node_offset_by_compatible(fdt, -1, compat); | |
362 | while (off != -FDT_ERR_NOTFOUND) { | |
8aa5ec6e | 363 | if (create || (fdt_get_property(fdt, off, prop, NULL) != NULL)) |
9eb77cea KG |
364 | fdt_setprop(fdt, off, prop, val, len); |
365 | off = fdt_node_offset_by_compatible(fdt, off, compat); | |
366 | } | |
367 | } | |
368 | ||
369 | void do_fixup_by_compat_u32(void *fdt, const char *compat, | |
370 | const char *prop, u32 val, int create) | |
371 | { | |
8aa5ec6e KP |
372 | fdt32_t tmp = cpu_to_fdt32(val); |
373 | do_fixup_by_compat(fdt, compat, prop, &tmp, 4, create); | |
9eb77cea KG |
374 | } |
375 | ||
5e574546 DA |
376 | #ifdef CONFIG_NR_DRAM_BANKS |
377 | #define MEMORY_BANKS_MAX CONFIG_NR_DRAM_BANKS | |
378 | #else | |
8aa5ec6e | 379 | #define MEMORY_BANKS_MAX 4 |
5e574546 | 380 | #endif |
a6bd9e83 JR |
381 | int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks) |
382 | { | |
383 | int err, nodeoffset; | |
384 | int addr_cell_len, size_cell_len, len; | |
8aa5ec6e | 385 | u8 tmp[MEMORY_BANKS_MAX * 16]; /* Up to 64-bit address + 64-bit size */ |
a6bd9e83 | 386 | int bank; |
3c927281 | 387 | |
8aa5ec6e KP |
388 | if (banks > MEMORY_BANKS_MAX) { |
389 | printf("%s: num banks %d exceeds hardcoded limit %d." | |
390 | " Recompile with higher MEMORY_BANKS_MAX?\n", | |
391 | __FUNCTION__, banks, MEMORY_BANKS_MAX); | |
392 | return -1; | |
393 | } | |
394 | ||
3c927281 KG |
395 | err = fdt_check_header(blob); |
396 | if (err < 0) { | |
397 | printf("%s: %s\n", __FUNCTION__, fdt_strerror(err)); | |
398 | return err; | |
399 | } | |
400 | ||
401 | /* update, or add and update /memory node */ | |
402 | nodeoffset = fdt_path_offset(blob, "/memory"); | |
403 | if (nodeoffset < 0) { | |
404 | nodeoffset = fdt_add_subnode(blob, 0, "memory"); | |
35940de1 | 405 | if (nodeoffset < 0) { |
3c927281 KG |
406 | printf("WARNING: could not create /memory: %s.\n", |
407 | fdt_strerror(nodeoffset)); | |
35940de1 MY |
408 | return nodeoffset; |
409 | } | |
3c927281 KG |
410 | } |
411 | err = fdt_setprop(blob, nodeoffset, "device_type", "memory", | |
412 | sizeof("memory")); | |
413 | if (err < 0) { | |
414 | printf("WARNING: could not set %s %s.\n", "device_type", | |
415 | fdt_strerror(err)); | |
416 | return err; | |
417 | } | |
418 | ||
a6bd9e83 JR |
419 | addr_cell_len = get_cells_len(blob, "#address-cells"); |
420 | size_cell_len = get_cells_len(blob, "#size-cells"); | |
3c927281 | 421 | |
a6bd9e83 JR |
422 | for (bank = 0, len = 0; bank < banks; bank++) { |
423 | write_cell(tmp + len, start[bank], addr_cell_len); | |
424 | len += addr_cell_len; | |
425 | ||
426 | write_cell(tmp + len, size[bank], size_cell_len); | |
427 | len += size_cell_len; | |
3c927281 KG |
428 | } |
429 | ||
430 | err = fdt_setprop(blob, nodeoffset, "reg", tmp, len); | |
431 | if (err < 0) { | |
432 | printf("WARNING: could not set %s %s.\n", | |
433 | "reg", fdt_strerror(err)); | |
434 | return err; | |
435 | } | |
436 | return 0; | |
437 | } | |
438 | ||
a6bd9e83 JR |
439 | int fdt_fixup_memory(void *blob, u64 start, u64 size) |
440 | { | |
441 | return fdt_fixup_memory_banks(blob, &start, &size, 1); | |
442 | } | |
443 | ||
ba37aa03 | 444 | void fdt_fixup_ethernet(void *fdt) |
ab544633 | 445 | { |
ba37aa03 KG |
446 | int node, i, j; |
447 | char enet[16], *tmp, *end; | |
064d55f8 | 448 | char mac[16]; |
ab544633 | 449 | const char *path; |
ba37aa03 | 450 | unsigned char mac_addr[6]; |
ab544633 KG |
451 | |
452 | node = fdt_path_offset(fdt, "/aliases"); | |
ba37aa03 KG |
453 | if (node < 0) |
454 | return; | |
455 | ||
456 | i = 0; | |
064d55f8 | 457 | strcpy(mac, "ethaddr"); |
ba37aa03 KG |
458 | while ((tmp = getenv(mac)) != NULL) { |
459 | sprintf(enet, "ethernet%d", i); | |
460 | path = fdt_getprop(fdt, node, enet, NULL); | |
461 | if (!path) { | |
462 | debug("No alias for %s\n", enet); | |
463 | sprintf(mac, "eth%daddr", ++i); | |
464 | continue; | |
ab544633 | 465 | } |
ba37aa03 KG |
466 | |
467 | for (j = 0; j < 6; j++) { | |
468 | mac_addr[j] = tmp ? simple_strtoul(tmp, &end, 16) : 0; | |
469 | if (tmp) | |
470 | tmp = (*end) ? end+1 : end; | |
ab544633 | 471 | } |
ba37aa03 KG |
472 | |
473 | do_fixup_by_path(fdt, path, "mac-address", &mac_addr, 6, 0); | |
474 | do_fixup_by_path(fdt, path, "local-mac-address", | |
475 | &mac_addr, 6, 1); | |
476 | ||
477 | sprintf(mac, "eth%daddr", ++i); | |
ab544633 KG |
478 | } |
479 | } | |
18e69a35 | 480 | |
3082d234 KG |
481 | /* Resize the fdt to its actual size + a bit of padding */ |
482 | int fdt_resize(void *blob) | |
483 | { | |
484 | int i; | |
485 | uint64_t addr, size; | |
486 | int total, ret; | |
487 | uint actualsize; | |
488 | ||
489 | if (!blob) | |
490 | return 0; | |
491 | ||
492 | total = fdt_num_mem_rsv(blob); | |
493 | for (i = 0; i < total; i++) { | |
494 | fdt_get_mem_rsv(blob, i, &addr, &size); | |
92549358 | 495 | if (addr == (uintptr_t)blob) { |
3082d234 KG |
496 | fdt_del_mem_rsv(blob, i); |
497 | break; | |
498 | } | |
499 | } | |
500 | ||
f242a088 PK |
501 | /* |
502 | * Calculate the actual size of the fdt | |
3840ebfa FW |
503 | * plus the size needed for 5 fdt_add_mem_rsv, one |
504 | * for the fdt itself and 4 for a possible initrd | |
505 | * ((initrd-start + initrd-end) * 2 (name & value)) | |
f242a088 | 506 | */ |
3082d234 | 507 | actualsize = fdt_off_dt_strings(blob) + |
3840ebfa | 508 | fdt_size_dt_strings(blob) + 5 * sizeof(struct fdt_reserve_entry); |
3082d234 KG |
509 | |
510 | /* Make it so the fdt ends on a page boundary */ | |
92549358 SG |
511 | actualsize = ALIGN(actualsize + ((uintptr_t)blob & 0xfff), 0x1000); |
512 | actualsize = actualsize - ((uintptr_t)blob & 0xfff); | |
3082d234 KG |
513 | |
514 | /* Change the fdt header to reflect the correct size */ | |
515 | fdt_set_totalsize(blob, actualsize); | |
516 | ||
517 | /* Add the new reservation */ | |
92549358 | 518 | ret = fdt_add_mem_rsv(blob, (uintptr_t)blob, actualsize); |
3082d234 KG |
519 | if (ret < 0) |
520 | return ret; | |
521 | ||
522 | return actualsize; | |
523 | } | |
8ab451c4 KG |
524 | |
525 | #ifdef CONFIG_PCI | |
cfd700be | 526 | #define CONFIG_SYS_PCI_NR_INBOUND_WIN 4 |
8ab451c4 KG |
527 | |
528 | #define FDT_PCI_PREFETCH (0x40000000) | |
529 | #define FDT_PCI_MEM32 (0x02000000) | |
530 | #define FDT_PCI_IO (0x01000000) | |
531 | #define FDT_PCI_MEM64 (0x03000000) | |
532 | ||
533 | int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose) { | |
534 | ||
535 | int addrcell, sizecell, len, r; | |
536 | u32 *dma_range; | |
537 | /* sized based on pci addr cells, size-cells, & address-cells */ | |
538 | u32 dma_ranges[(3 + 2 + 2) * CONFIG_SYS_PCI_NR_INBOUND_WIN]; | |
539 | ||
540 | addrcell = fdt_getprop_u32_default(blob, "/", "#address-cells", 1); | |
541 | sizecell = fdt_getprop_u32_default(blob, "/", "#size-cells", 1); | |
542 | ||
543 | dma_range = &dma_ranges[0]; | |
544 | for (r = 0; r < hose->region_count; r++) { | |
545 | u64 bus_start, phys_start, size; | |
546 | ||
ff4e66e9 KG |
547 | /* skip if !PCI_REGION_SYS_MEMORY */ |
548 | if (!(hose->regions[r].flags & PCI_REGION_SYS_MEMORY)) | |
8ab451c4 KG |
549 | continue; |
550 | ||
551 | bus_start = (u64)hose->regions[r].bus_start; | |
552 | phys_start = (u64)hose->regions[r].phys_start; | |
553 | size = (u64)hose->regions[r].size; | |
554 | ||
555 | dma_range[0] = 0; | |
cfd700be | 556 | if (size >= 0x100000000ull) |
8ab451c4 KG |
557 | dma_range[0] |= FDT_PCI_MEM64; |
558 | else | |
559 | dma_range[0] |= FDT_PCI_MEM32; | |
560 | if (hose->regions[r].flags & PCI_REGION_PREFETCH) | |
561 | dma_range[0] |= FDT_PCI_PREFETCH; | |
562 | #ifdef CONFIG_SYS_PCI_64BIT | |
563 | dma_range[1] = bus_start >> 32; | |
564 | #else | |
565 | dma_range[1] = 0; | |
566 | #endif | |
567 | dma_range[2] = bus_start & 0xffffffff; | |
568 | ||
569 | if (addrcell == 2) { | |
570 | dma_range[3] = phys_start >> 32; | |
571 | dma_range[4] = phys_start & 0xffffffff; | |
572 | } else { | |
573 | dma_range[3] = phys_start & 0xffffffff; | |
574 | } | |
575 | ||
576 | if (sizecell == 2) { | |
577 | dma_range[3 + addrcell + 0] = size >> 32; | |
578 | dma_range[3 + addrcell + 1] = size & 0xffffffff; | |
579 | } else { | |
580 | dma_range[3 + addrcell + 0] = size & 0xffffffff; | |
581 | } | |
582 | ||
583 | dma_range += (3 + addrcell + sizecell); | |
584 | } | |
585 | ||
586 | len = dma_range - &dma_ranges[0]; | |
587 | if (len) | |
588 | fdt_setprop(blob, phb_off, "dma-ranges", &dma_ranges[0], len*4); | |
589 | ||
590 | return 0; | |
591 | } | |
592 | #endif | |
30d45c0d SR |
593 | |
594 | #ifdef CONFIG_FDT_FIXUP_NOR_FLASH_SIZE | |
8a805df1 SR |
595 | /* |
596 | * Provide a weak default function to return the flash bank size. | |
597 | * There might be multiple non-identical flash chips connected to one | |
598 | * chip-select, so we need to pass an index as well. | |
599 | */ | |
600 | u32 __flash_get_bank_size(int cs, int idx) | |
601 | { | |
602 | extern flash_info_t flash_info[]; | |
603 | ||
604 | /* | |
605 | * As default, a simple 1:1 mapping is provided. Boards with | |
606 | * a different mapping need to supply a board specific mapping | |
607 | * routine. | |
608 | */ | |
609 | return flash_info[cs].size; | |
610 | } | |
611 | u32 flash_get_bank_size(int cs, int idx) | |
612 | __attribute__((weak, alias("__flash_get_bank_size"))); | |
613 | ||
30d45c0d SR |
614 | /* |
615 | * This function can be used to update the size in the "reg" property | |
8a805df1 | 616 | * of all NOR FLASH device nodes. This is necessary for boards with |
30d45c0d SR |
617 | * non-fixed NOR FLASH sizes. |
618 | */ | |
8a805df1 | 619 | int fdt_fixup_nor_flash_size(void *blob) |
30d45c0d SR |
620 | { |
621 | char compat[][16] = { "cfi-flash", "jedec-flash" }; | |
622 | int off; | |
623 | int len; | |
624 | struct fdt_property *prop; | |
2778a014 | 625 | u32 *reg, *reg2; |
30d45c0d SR |
626 | int i; |
627 | ||
628 | for (i = 0; i < 2; i++) { | |
629 | off = fdt_node_offset_by_compatible(blob, -1, compat[i]); | |
630 | while (off != -FDT_ERR_NOTFOUND) { | |
8a805df1 SR |
631 | int idx; |
632 | ||
30d45c0d | 633 | /* |
8a805df1 SR |
634 | * Found one compatible node, so fixup the size |
635 | * int its reg properties | |
30d45c0d SR |
636 | */ |
637 | prop = fdt_get_property_w(blob, off, "reg", &len); | |
638 | if (prop) { | |
8a805df1 SR |
639 | int tuple_size = 3 * sizeof(reg); |
640 | ||
641 | /* | |
642 | * There might be multiple reg-tuples, | |
643 | * so loop through them all | |
644 | */ | |
2778a014 SR |
645 | reg = reg2 = (u32 *)&prop->data[0]; |
646 | for (idx = 0; idx < (len / tuple_size); idx++) { | |
8a805df1 SR |
647 | /* |
648 | * Update size in reg property | |
649 | */ | |
650 | reg[2] = flash_get_bank_size(reg[0], | |
651 | idx); | |
2778a014 SR |
652 | |
653 | /* | |
654 | * Point to next reg tuple | |
655 | */ | |
656 | reg += 3; | |
30d45c0d | 657 | } |
2778a014 SR |
658 | |
659 | fdt_setprop(blob, off, "reg", reg2, len); | |
30d45c0d SR |
660 | } |
661 | ||
662 | /* Move to next compatible node */ | |
663 | off = fdt_node_offset_by_compatible(blob, off, | |
664 | compat[i]); | |
665 | } | |
666 | } | |
667 | ||
8a805df1 | 668 | return 0; |
30d45c0d SR |
669 | } |
670 | #endif | |
3c950e2e | 671 | |
cb2707af MM |
672 | int fdt_increase_size(void *fdt, int add_len) |
673 | { | |
674 | int newlen; | |
675 | ||
676 | newlen = fdt_totalsize(fdt) + add_len; | |
677 | ||
678 | /* Open in place with a new len */ | |
679 | return fdt_open_into(fdt, fdt, newlen); | |
680 | } | |
681 | ||
3c950e2e AG |
682 | #ifdef CONFIG_FDT_FIXUP_PARTITIONS |
683 | #include <jffs2/load_kernel.h> | |
684 | #include <mtd_node.h> | |
685 | ||
686 | struct reg_cell { | |
687 | unsigned int r0; | |
688 | unsigned int r1; | |
689 | }; | |
690 | ||
691 | int fdt_del_subnodes(const void *blob, int parent_offset) | |
692 | { | |
693 | int off, ndepth; | |
694 | int ret; | |
695 | ||
696 | for (ndepth = 0, off = fdt_next_node(blob, parent_offset, &ndepth); | |
697 | (off >= 0) && (ndepth > 0); | |
698 | off = fdt_next_node(blob, off, &ndepth)) { | |
699 | if (ndepth == 1) { | |
700 | debug("delete %s: offset: %x\n", | |
701 | fdt_get_name(blob, off, 0), off); | |
702 | ret = fdt_del_node((void *)blob, off); | |
703 | if (ret < 0) { | |
704 | printf("Can't delete node: %s\n", | |
705 | fdt_strerror(ret)); | |
706 | return ret; | |
707 | } else { | |
708 | ndepth = 0; | |
709 | off = parent_offset; | |
710 | } | |
711 | } | |
712 | } | |
713 | return 0; | |
714 | } | |
715 | ||
3c950e2e AG |
716 | int fdt_del_partitions(void *blob, int parent_offset) |
717 | { | |
718 | const void *prop; | |
719 | int ndepth = 0; | |
720 | int off; | |
721 | int ret; | |
722 | ||
723 | off = fdt_next_node(blob, parent_offset, &ndepth); | |
724 | if (off > 0 && ndepth == 1) { | |
725 | prop = fdt_getprop(blob, off, "label", NULL); | |
726 | if (prop == NULL) { | |
727 | /* | |
728 | * Could not find label property, nand {}; node? | |
729 | * Check subnode, delete partitions there if any. | |
730 | */ | |
731 | return fdt_del_partitions(blob, off); | |
732 | } else { | |
733 | ret = fdt_del_subnodes(blob, parent_offset); | |
734 | if (ret < 0) { | |
735 | printf("Can't remove subnodes: %s\n", | |
736 | fdt_strerror(ret)); | |
737 | return ret; | |
738 | } | |
739 | } | |
740 | } | |
741 | return 0; | |
742 | } | |
743 | ||
744 | int fdt_node_set_part_info(void *blob, int parent_offset, | |
745 | struct mtd_device *dev) | |
746 | { | |
747 | struct list_head *pentry; | |
748 | struct part_info *part; | |
749 | struct reg_cell cell; | |
750 | int off, ndepth = 0; | |
751 | int part_num, ret; | |
752 | char buf[64]; | |
753 | ||
754 | ret = fdt_del_partitions(blob, parent_offset); | |
755 | if (ret < 0) | |
756 | return ret; | |
757 | ||
758 | /* | |
759 | * Check if it is nand {}; subnode, adjust | |
760 | * the offset in this case | |
761 | */ | |
762 | off = fdt_next_node(blob, parent_offset, &ndepth); | |
763 | if (off > 0 && ndepth == 1) | |
764 | parent_offset = off; | |
765 | ||
766 | part_num = 0; | |
767 | list_for_each_prev(pentry, &dev->parts) { | |
768 | int newoff; | |
769 | ||
770 | part = list_entry(pentry, struct part_info, link); | |
771 | ||
06503f16 | 772 | debug("%2d: %-20s0x%08llx\t0x%08llx\t%d\n", |
3c950e2e AG |
773 | part_num, part->name, part->size, |
774 | part->offset, part->mask_flags); | |
775 | ||
06503f16 | 776 | sprintf(buf, "partition@%llx", part->offset); |
3c950e2e AG |
777 | add_sub: |
778 | ret = fdt_add_subnode(blob, parent_offset, buf); | |
779 | if (ret == -FDT_ERR_NOSPACE) { | |
780 | ret = fdt_increase_size(blob, 512); | |
781 | if (!ret) | |
782 | goto add_sub; | |
783 | else | |
784 | goto err_size; | |
785 | } else if (ret < 0) { | |
786 | printf("Can't add partition node: %s\n", | |
787 | fdt_strerror(ret)); | |
788 | return ret; | |
789 | } | |
790 | newoff = ret; | |
791 | ||
792 | /* Check MTD_WRITEABLE_CMD flag */ | |
793 | if (part->mask_flags & 1) { | |
794 | add_ro: | |
795 | ret = fdt_setprop(blob, newoff, "read_only", NULL, 0); | |
796 | if (ret == -FDT_ERR_NOSPACE) { | |
797 | ret = fdt_increase_size(blob, 512); | |
798 | if (!ret) | |
799 | goto add_ro; | |
800 | else | |
801 | goto err_size; | |
802 | } else if (ret < 0) | |
803 | goto err_prop; | |
804 | } | |
805 | ||
806 | cell.r0 = cpu_to_fdt32(part->offset); | |
807 | cell.r1 = cpu_to_fdt32(part->size); | |
808 | add_reg: | |
809 | ret = fdt_setprop(blob, newoff, "reg", &cell, sizeof(cell)); | |
810 | if (ret == -FDT_ERR_NOSPACE) { | |
811 | ret = fdt_increase_size(blob, 512); | |
812 | if (!ret) | |
813 | goto add_reg; | |
814 | else | |
815 | goto err_size; | |
816 | } else if (ret < 0) | |
817 | goto err_prop; | |
818 | ||
819 | add_label: | |
820 | ret = fdt_setprop_string(blob, newoff, "label", part->name); | |
821 | if (ret == -FDT_ERR_NOSPACE) { | |
822 | ret = fdt_increase_size(blob, 512); | |
823 | if (!ret) | |
824 | goto add_label; | |
825 | else | |
826 | goto err_size; | |
827 | } else if (ret < 0) | |
828 | goto err_prop; | |
829 | ||
830 | part_num++; | |
831 | } | |
832 | return 0; | |
833 | err_size: | |
834 | printf("Can't increase blob size: %s\n", fdt_strerror(ret)); | |
835 | return ret; | |
836 | err_prop: | |
837 | printf("Can't add property: %s\n", fdt_strerror(ret)); | |
838 | return ret; | |
839 | } | |
840 | ||
841 | /* | |
842 | * Update partitions in nor/nand nodes using info from | |
843 | * mtdparts environment variable. The nodes to update are | |
844 | * specified by node_info structure which contains mtd device | |
845 | * type and compatible string: E. g. the board code in | |
846 | * ft_board_setup() could use: | |
847 | * | |
848 | * struct node_info nodes[] = { | |
849 | * { "fsl,mpc5121-nfc", MTD_DEV_TYPE_NAND, }, | |
850 | * { "cfi-flash", MTD_DEV_TYPE_NOR, }, | |
851 | * }; | |
852 | * | |
853 | * fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes)); | |
854 | */ | |
855 | void fdt_fixup_mtdparts(void *blob, void *node_info, int node_info_size) | |
856 | { | |
857 | struct node_info *ni = node_info; | |
858 | struct mtd_device *dev; | |
859 | char *parts; | |
860 | int i, idx; | |
861 | int noff; | |
862 | ||
863 | parts = getenv("mtdparts"); | |
864 | if (!parts) | |
865 | return; | |
866 | ||
867 | if (mtdparts_init() != 0) | |
868 | return; | |
869 | ||
870 | for (i = 0; i < node_info_size; i++) { | |
871 | idx = 0; | |
872 | noff = fdt_node_offset_by_compatible(blob, -1, ni[i].compat); | |
873 | while (noff != -FDT_ERR_NOTFOUND) { | |
874 | debug("%s: %s, mtd dev type %d\n", | |
875 | fdt_get_name(blob, noff, 0), | |
876 | ni[i].compat, ni[i].type); | |
877 | dev = device_find(ni[i].type, idx++); | |
878 | if (dev) { | |
879 | if (fdt_node_set_part_info(blob, noff, dev)) | |
880 | return; /* return on error */ | |
881 | } | |
882 | ||
883 | /* Jump to next flash node */ | |
884 | noff = fdt_node_offset_by_compatible(blob, noff, | |
885 | ni[i].compat); | |
886 | } | |
887 | } | |
888 | } | |
889 | #endif | |
49b97d9c KG |
890 | |
891 | void fdt_del_node_and_alias(void *blob, const char *alias) | |
892 | { | |
893 | int off = fdt_path_offset(blob, alias); | |
894 | ||
895 | if (off < 0) | |
896 | return; | |
897 | ||
898 | fdt_del_node(blob, off); | |
899 | ||
900 | off = fdt_path_offset(blob, "/aliases"); | |
901 | fdt_delprop(blob, off, alias); | |
902 | } | |
a0342c08 KG |
903 | |
904 | /* Helper to read a big number; size is in cells (not bytes) */ | |
8aa5ec6e | 905 | static inline u64 of_read_number(const fdt32_t *cell, int size) |
a0342c08 KG |
906 | { |
907 | u64 r = 0; | |
908 | while (size--) | |
8aa5ec6e | 909 | r = (r << 32) | fdt32_to_cpu(*(cell++)); |
a0342c08 KG |
910 | return r; |
911 | } | |
912 | ||
a0342c08 KG |
913 | #define PRu64 "%llx" |
914 | ||
915 | /* Max address size we deal with */ | |
916 | #define OF_MAX_ADDR_CELLS 4 | |
917 | #define OF_BAD_ADDR ((u64)-1) | |
918 | #define OF_CHECK_COUNTS(na, ns) ((na) > 0 && (na) <= OF_MAX_ADDR_CELLS && \ | |
919 | (ns) > 0) | |
920 | ||
921 | /* Debug utility */ | |
922 | #ifdef DEBUG | |
8aa5ec6e | 923 | static void of_dump_addr(const char *s, const fdt32_t *addr, int na) |
a0342c08 KG |
924 | { |
925 | printf("%s", s); | |
926 | while(na--) | |
927 | printf(" %08x", *(addr++)); | |
928 | printf("\n"); | |
929 | } | |
930 | #else | |
8aa5ec6e | 931 | static void of_dump_addr(const char *s, const fdt32_t *addr, int na) { } |
a0342c08 KG |
932 | #endif |
933 | ||
934 | /* Callbacks for bus specific translators */ | |
935 | struct of_bus { | |
936 | const char *name; | |
937 | const char *addresses; | |
6395f318 | 938 | void (*count_cells)(void *blob, int parentoffset, |
a0342c08 | 939 | int *addrc, int *sizec); |
8aa5ec6e | 940 | u64 (*map)(fdt32_t *addr, const fdt32_t *range, |
a0342c08 | 941 | int na, int ns, int pna); |
8aa5ec6e | 942 | int (*translate)(fdt32_t *addr, u64 offset, int na); |
a0342c08 KG |
943 | }; |
944 | ||
945 | /* Default translator (generic bus) */ | |
6395f318 | 946 | static void of_bus_default_count_cells(void *blob, int parentoffset, |
a0342c08 KG |
947 | int *addrc, int *sizec) |
948 | { | |
8aa5ec6e | 949 | const fdt32_t *prop; |
6395f318 SW |
950 | |
951 | if (addrc) { | |
952 | prop = fdt_getprop(blob, parentoffset, "#address-cells", NULL); | |
953 | if (prop) | |
8aa5ec6e | 954 | *addrc = be32_to_cpup(prop); |
6395f318 SW |
955 | else |
956 | *addrc = 2; | |
957 | } | |
958 | ||
959 | if (sizec) { | |
960 | prop = fdt_getprop(blob, parentoffset, "#size-cells", NULL); | |
961 | if (prop) | |
8aa5ec6e | 962 | *sizec = be32_to_cpup(prop); |
6395f318 SW |
963 | else |
964 | *sizec = 1; | |
965 | } | |
a0342c08 KG |
966 | } |
967 | ||
8aa5ec6e | 968 | static u64 of_bus_default_map(fdt32_t *addr, const fdt32_t *range, |
a0342c08 KG |
969 | int na, int ns, int pna) |
970 | { | |
971 | u64 cp, s, da; | |
972 | ||
973 | cp = of_read_number(range, na); | |
974 | s = of_read_number(range + na + pna, ns); | |
975 | da = of_read_number(addr, na); | |
976 | ||
977 | debug("OF: default map, cp="PRu64", s="PRu64", da="PRu64"\n", | |
978 | cp, s, da); | |
979 | ||
980 | if (da < cp || da >= (cp + s)) | |
981 | return OF_BAD_ADDR; | |
982 | return da - cp; | |
983 | } | |
984 | ||
8aa5ec6e | 985 | static int of_bus_default_translate(fdt32_t *addr, u64 offset, int na) |
a0342c08 KG |
986 | { |
987 | u64 a = of_read_number(addr, na); | |
988 | memset(addr, 0, na * 4); | |
989 | a += offset; | |
990 | if (na > 1) | |
8aa5ec6e KP |
991 | addr[na - 2] = cpu_to_fdt32(a >> 32); |
992 | addr[na - 1] = cpu_to_fdt32(a & 0xffffffffu); | |
a0342c08 KG |
993 | |
994 | return 0; | |
995 | } | |
996 | ||
997 | /* Array of bus specific translators */ | |
998 | static struct of_bus of_busses[] = { | |
999 | /* Default */ | |
1000 | { | |
1001 | .name = "default", | |
1002 | .addresses = "reg", | |
1003 | .count_cells = of_bus_default_count_cells, | |
1004 | .map = of_bus_default_map, | |
1005 | .translate = of_bus_default_translate, | |
1006 | }, | |
1007 | }; | |
1008 | ||
1009 | static int of_translate_one(void * blob, int parent, struct of_bus *bus, | |
8aa5ec6e | 1010 | struct of_bus *pbus, fdt32_t *addr, |
a0342c08 KG |
1011 | int na, int ns, int pna, const char *rprop) |
1012 | { | |
8aa5ec6e | 1013 | const fdt32_t *ranges; |
a0342c08 KG |
1014 | int rlen; |
1015 | int rone; | |
1016 | u64 offset = OF_BAD_ADDR; | |
1017 | ||
1018 | /* Normally, an absence of a "ranges" property means we are | |
1019 | * crossing a non-translatable boundary, and thus the addresses | |
1020 | * below the current not cannot be converted to CPU physical ones. | |
1021 | * Unfortunately, while this is very clear in the spec, it's not | |
1022 | * what Apple understood, and they do have things like /uni-n or | |
1023 | * /ht nodes with no "ranges" property and a lot of perfectly | |
1024 | * useable mapped devices below them. Thus we treat the absence of | |
1025 | * "ranges" as equivalent to an empty "ranges" property which means | |
1026 | * a 1:1 translation at that level. It's up to the caller not to try | |
1027 | * to translate addresses that aren't supposed to be translated in | |
1028 | * the first place. --BenH. | |
1029 | */ | |
8aa5ec6e | 1030 | ranges = fdt_getprop(blob, parent, rprop, &rlen); |
a0342c08 KG |
1031 | if (ranges == NULL || rlen == 0) { |
1032 | offset = of_read_number(addr, na); | |
1033 | memset(addr, 0, pna * 4); | |
1034 | debug("OF: no ranges, 1:1 translation\n"); | |
1035 | goto finish; | |
1036 | } | |
1037 | ||
1038 | debug("OF: walking ranges...\n"); | |
1039 | ||
1040 | /* Now walk through the ranges */ | |
1041 | rlen /= 4; | |
1042 | rone = na + pna + ns; | |
1043 | for (; rlen >= rone; rlen -= rone, ranges += rone) { | |
1044 | offset = bus->map(addr, ranges, na, ns, pna); | |
1045 | if (offset != OF_BAD_ADDR) | |
1046 | break; | |
1047 | } | |
1048 | if (offset == OF_BAD_ADDR) { | |
1049 | debug("OF: not found !\n"); | |
1050 | return 1; | |
1051 | } | |
1052 | memcpy(addr, ranges + na, 4 * pna); | |
1053 | ||
1054 | finish: | |
1055 | of_dump_addr("OF: parent translation for:", addr, pna); | |
1056 | debug("OF: with offset: "PRu64"\n", offset); | |
1057 | ||
1058 | /* Translate it into parent bus space */ | |
1059 | return pbus->translate(addr, offset, pna); | |
1060 | } | |
1061 | ||
1062 | /* | |
1063 | * Translate an address from the device-tree into a CPU physical address, | |
1064 | * this walks up the tree and applies the various bus mappings on the | |
1065 | * way. | |
1066 | * | |
1067 | * Note: We consider that crossing any level with #size-cells == 0 to mean | |
1068 | * that translation is impossible (that is we are not dealing with a value | |
1069 | * that can be mapped to a cpu physical address). This is not really specified | |
1070 | * that way, but this is traditionally the way IBM at least do things | |
1071 | */ | |
8aa5ec6e KP |
1072 | static u64 __of_translate_address(void *blob, int node_offset, const fdt32_t *in_addr, |
1073 | const char *rprop) | |
a0342c08 KG |
1074 | { |
1075 | int parent; | |
1076 | struct of_bus *bus, *pbus; | |
8aa5ec6e | 1077 | fdt32_t addr[OF_MAX_ADDR_CELLS]; |
a0342c08 KG |
1078 | int na, ns, pna, pns; |
1079 | u64 result = OF_BAD_ADDR; | |
1080 | ||
1081 | debug("OF: ** translation for device %s **\n", | |
1082 | fdt_get_name(blob, node_offset, NULL)); | |
1083 | ||
1084 | /* Get parent & match bus type */ | |
1085 | parent = fdt_parent_offset(blob, node_offset); | |
1086 | if (parent < 0) | |
1087 | goto bail; | |
1088 | bus = &of_busses[0]; | |
1089 | ||
1090 | /* Cound address cells & copy address locally */ | |
6395f318 | 1091 | bus->count_cells(blob, parent, &na, &ns); |
a0342c08 KG |
1092 | if (!OF_CHECK_COUNTS(na, ns)) { |
1093 | printf("%s: Bad cell count for %s\n", __FUNCTION__, | |
1094 | fdt_get_name(blob, node_offset, NULL)); | |
1095 | goto bail; | |
1096 | } | |
1097 | memcpy(addr, in_addr, na * 4); | |
1098 | ||
1099 | debug("OF: bus is %s (na=%d, ns=%d) on %s\n", | |
1100 | bus->name, na, ns, fdt_get_name(blob, parent, NULL)); | |
1101 | of_dump_addr("OF: translating address:", addr, na); | |
1102 | ||
1103 | /* Translate */ | |
1104 | for (;;) { | |
1105 | /* Switch to parent bus */ | |
1106 | node_offset = parent; | |
1107 | parent = fdt_parent_offset(blob, node_offset); | |
1108 | ||
1109 | /* If root, we have finished */ | |
1110 | if (parent < 0) { | |
1111 | debug("OF: reached root node\n"); | |
1112 | result = of_read_number(addr, na); | |
1113 | break; | |
1114 | } | |
1115 | ||
1116 | /* Get new parent bus and counts */ | |
1117 | pbus = &of_busses[0]; | |
6395f318 | 1118 | pbus->count_cells(blob, parent, &pna, &pns); |
a0342c08 KG |
1119 | if (!OF_CHECK_COUNTS(pna, pns)) { |
1120 | printf("%s: Bad cell count for %s\n", __FUNCTION__, | |
1121 | fdt_get_name(blob, node_offset, NULL)); | |
1122 | break; | |
1123 | } | |
1124 | ||
1125 | debug("OF: parent bus is %s (na=%d, ns=%d) on %s\n", | |
1126 | pbus->name, pna, pns, fdt_get_name(blob, parent, NULL)); | |
1127 | ||
1128 | /* Apply bus translation */ | |
1129 | if (of_translate_one(blob, node_offset, bus, pbus, | |
1130 | addr, na, ns, pna, rprop)) | |
1131 | break; | |
1132 | ||
1133 | /* Complete the move up one level */ | |
1134 | na = pna; | |
1135 | ns = pns; | |
1136 | bus = pbus; | |
1137 | ||
1138 | of_dump_addr("OF: one level translation:", addr, na); | |
1139 | } | |
1140 | bail: | |
1141 | ||
1142 | return result; | |
1143 | } | |
1144 | ||
8aa5ec6e | 1145 | u64 fdt_translate_address(void *blob, int node_offset, const fdt32_t *in_addr) |
a0342c08 KG |
1146 | { |
1147 | return __of_translate_address(blob, node_offset, in_addr, "ranges"); | |
1148 | } | |
75e73afd KG |
1149 | |
1150 | /** | |
1151 | * fdt_node_offset_by_compat_reg: Find a node that matches compatiable and | |
1152 | * who's reg property matches a physical cpu address | |
1153 | * | |
1154 | * @blob: ptr to device tree | |
1155 | * @compat: compatiable string to match | |
1156 | * @compat_off: property name | |
1157 | * | |
1158 | */ | |
1159 | int fdt_node_offset_by_compat_reg(void *blob, const char *compat, | |
1160 | phys_addr_t compat_off) | |
1161 | { | |
1162 | int len, off = fdt_node_offset_by_compatible(blob, -1, compat); | |
1163 | while (off != -FDT_ERR_NOTFOUND) { | |
8aa5ec6e | 1164 | const fdt32_t *reg = fdt_getprop(blob, off, "reg", &len); |
75e73afd KG |
1165 | if (reg) { |
1166 | if (compat_off == fdt_translate_address(blob, off, reg)) | |
1167 | return off; | |
1168 | } | |
1169 | off = fdt_node_offset_by_compatible(blob, off, compat); | |
1170 | } | |
1171 | ||
1172 | return -FDT_ERR_NOTFOUND; | |
1173 | } | |
1174 | ||
b4b847e9 KG |
1175 | /** |
1176 | * fdt_alloc_phandle: Return next free phandle value | |
1177 | * | |
1178 | * @blob: ptr to device tree | |
1179 | */ | |
1180 | int fdt_alloc_phandle(void *blob) | |
1181 | { | |
50bf17bd | 1182 | int offset, phandle = 0; |
b4b847e9 KG |
1183 | |
1184 | for (offset = fdt_next_node(blob, -1, NULL); offset >= 0; | |
1185 | offset = fdt_next_node(blob, offset, NULL)) { | |
50bf17bd | 1186 | phandle = max(phandle, fdt_get_phandle(blob, offset)); |
b4b847e9 | 1187 | } |
75e73afd | 1188 | |
b4b847e9 KG |
1189 | return phandle + 1; |
1190 | } | |
beca5a5f | 1191 | |
a8d2a75d | 1192 | /* |
f117c0f0 | 1193 | * fdt_set_phandle: Create a phandle property for the given node |
a8d2a75d GVB |
1194 | * |
1195 | * @fdt: ptr to device tree | |
1196 | * @nodeoffset: node to update | |
1197 | * @phandle: phandle value to set (must be unique) | |
f117c0f0 KG |
1198 | */ |
1199 | int fdt_set_phandle(void *fdt, int nodeoffset, uint32_t phandle) | |
a8d2a75d GVB |
1200 | { |
1201 | int ret; | |
1202 | ||
1203 | #ifdef DEBUG | |
1204 | int off = fdt_node_offset_by_phandle(fdt, phandle); | |
1205 | ||
1206 | if ((off >= 0) && (off != nodeoffset)) { | |
1207 | char buf[64]; | |
1208 | ||
1209 | fdt_get_path(fdt, nodeoffset, buf, sizeof(buf)); | |
1210 | printf("Trying to update node %s with phandle %u ", | |
1211 | buf, phandle); | |
1212 | ||
1213 | fdt_get_path(fdt, off, buf, sizeof(buf)); | |
1214 | printf("that already exists in node %s.\n", buf); | |
1215 | return -FDT_ERR_BADPHANDLE; | |
1216 | } | |
1217 | #endif | |
1218 | ||
1219 | ret = fdt_setprop_cell(fdt, nodeoffset, "phandle", phandle); | |
1220 | if (ret < 0) | |
1221 | return ret; | |
1222 | ||
1223 | /* | |
1224 | * For now, also set the deprecated "linux,phandle" property, so that we | |
1225 | * don't break older kernels. | |
1226 | */ | |
1227 | ret = fdt_setprop_cell(fdt, nodeoffset, "linux,phandle", phandle); | |
1228 | ||
1229 | return ret; | |
1230 | } | |
1231 | ||
10aeabd1 KG |
1232 | /* |
1233 | * fdt_create_phandle: Create a phandle property for the given node | |
1234 | * | |
1235 | * @fdt: ptr to device tree | |
1236 | * @nodeoffset: node to update | |
1237 | */ | |
3c927ccc | 1238 | unsigned int fdt_create_phandle(void *fdt, int nodeoffset) |
10aeabd1 KG |
1239 | { |
1240 | /* see if there is a phandle already */ | |
1241 | int phandle = fdt_get_phandle(fdt, nodeoffset); | |
1242 | ||
1243 | /* if we got 0, means no phandle so create one */ | |
1244 | if (phandle == 0) { | |
3c927ccc TT |
1245 | int ret; |
1246 | ||
10aeabd1 | 1247 | phandle = fdt_alloc_phandle(fdt); |
3c927ccc TT |
1248 | ret = fdt_set_phandle(fdt, nodeoffset, phandle); |
1249 | if (ret < 0) { | |
1250 | printf("Can't set phandle %u: %s\n", phandle, | |
1251 | fdt_strerror(ret)); | |
1252 | return 0; | |
1253 | } | |
10aeabd1 KG |
1254 | } |
1255 | ||
1256 | return phandle; | |
1257 | } | |
1258 | ||
2a523f52 SL |
1259 | /* |
1260 | * fdt_set_node_status: Set status for the given node | |
1261 | * | |
1262 | * @fdt: ptr to device tree | |
1263 | * @nodeoffset: node to update | |
1264 | * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED, | |
1265 | * FDT_STATUS_FAIL, FDT_STATUS_FAIL_ERROR_CODE | |
1266 | * @error_code: optional, only used if status is FDT_STATUS_FAIL_ERROR_CODE | |
1267 | */ | |
1268 | int fdt_set_node_status(void *fdt, int nodeoffset, | |
1269 | enum fdt_status status, unsigned int error_code) | |
1270 | { | |
1271 | char buf[16]; | |
1272 | int ret = 0; | |
1273 | ||
1274 | if (nodeoffset < 0) | |
1275 | return nodeoffset; | |
1276 | ||
1277 | switch (status) { | |
1278 | case FDT_STATUS_OKAY: | |
1279 | ret = fdt_setprop_string(fdt, nodeoffset, "status", "okay"); | |
1280 | break; | |
1281 | case FDT_STATUS_DISABLED: | |
1282 | ret = fdt_setprop_string(fdt, nodeoffset, "status", "disabled"); | |
1283 | break; | |
1284 | case FDT_STATUS_FAIL: | |
1285 | ret = fdt_setprop_string(fdt, nodeoffset, "status", "fail"); | |
1286 | break; | |
1287 | case FDT_STATUS_FAIL_ERROR_CODE: | |
1288 | sprintf(buf, "fail-%d", error_code); | |
1289 | ret = fdt_setprop_string(fdt, nodeoffset, "status", buf); | |
1290 | break; | |
1291 | default: | |
1292 | printf("Invalid fdt status: %x\n", status); | |
1293 | ret = -1; | |
1294 | break; | |
1295 | } | |
1296 | ||
1297 | return ret; | |
1298 | } | |
1299 | ||
1300 | /* | |
1301 | * fdt_set_status_by_alias: Set status for the given node given an alias | |
1302 | * | |
1303 | * @fdt: ptr to device tree | |
1304 | * @alias: alias of node to update | |
1305 | * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED, | |
1306 | * FDT_STATUS_FAIL, FDT_STATUS_FAIL_ERROR_CODE | |
1307 | * @error_code: optional, only used if status is FDT_STATUS_FAIL_ERROR_CODE | |
1308 | */ | |
1309 | int fdt_set_status_by_alias(void *fdt, const char* alias, | |
1310 | enum fdt_status status, unsigned int error_code) | |
1311 | { | |
1312 | int offset = fdt_path_offset(fdt, alias); | |
1313 | ||
1314 | return fdt_set_node_status(fdt, offset, status, error_code); | |
1315 | } | |
1316 | ||
096eb3f5 | 1317 | #if defined(CONFIG_VIDEO) || defined(CONFIG_LCD) |
beca5a5f AG |
1318 | int fdt_add_edid(void *blob, const char *compat, unsigned char *edid_buf) |
1319 | { | |
1320 | int noff; | |
1321 | int ret; | |
1322 | ||
1323 | noff = fdt_node_offset_by_compatible(blob, -1, compat); | |
1324 | if (noff != -FDT_ERR_NOTFOUND) { | |
1325 | debug("%s: %s\n", fdt_get_name(blob, noff, 0), compat); | |
1326 | add_edid: | |
1327 | ret = fdt_setprop(blob, noff, "edid", edid_buf, 128); | |
1328 | if (ret == -FDT_ERR_NOSPACE) { | |
1329 | ret = fdt_increase_size(blob, 512); | |
1330 | if (!ret) | |
1331 | goto add_edid; | |
1332 | else | |
1333 | goto err_size; | |
1334 | } else if (ret < 0) { | |
1335 | printf("Can't add property: %s\n", fdt_strerror(ret)); | |
1336 | return ret; | |
1337 | } | |
1338 | } | |
1339 | return 0; | |
1340 | err_size: | |
1341 | printf("Can't increase blob size: %s\n", fdt_strerror(ret)); | |
1342 | return ret; | |
1343 | } | |
1344 | #endif | |
bb682001 TT |
1345 | |
1346 | /* | |
1347 | * Verify the physical address of device tree node for a given alias | |
1348 | * | |
1349 | * This function locates the device tree node of a given alias, and then | |
1350 | * verifies that the physical address of that device matches the given | |
1351 | * parameter. It displays a message if there is a mismatch. | |
1352 | * | |
1353 | * Returns 1 on success, 0 on failure | |
1354 | */ | |
1355 | int fdt_verify_alias_address(void *fdt, int anode, const char *alias, u64 addr) | |
1356 | { | |
1357 | const char *path; | |
8aa5ec6e | 1358 | const fdt32_t *reg; |
bb682001 TT |
1359 | int node, len; |
1360 | u64 dt_addr; | |
1361 | ||
1362 | path = fdt_getprop(fdt, anode, alias, NULL); | |
1363 | if (!path) { | |
1364 | /* If there's no such alias, then it's not a failure */ | |
1365 | return 1; | |
1366 | } | |
1367 | ||
1368 | node = fdt_path_offset(fdt, path); | |
1369 | if (node < 0) { | |
1370 | printf("Warning: device tree alias '%s' points to invalid " | |
1371 | "node %s.\n", alias, path); | |
1372 | return 0; | |
1373 | } | |
1374 | ||
1375 | reg = fdt_getprop(fdt, node, "reg", &len); | |
1376 | if (!reg) { | |
1377 | printf("Warning: device tree node '%s' has no address.\n", | |
1378 | path); | |
1379 | return 0; | |
1380 | } | |
1381 | ||
1382 | dt_addr = fdt_translate_address(fdt, node, reg); | |
1383 | if (addr != dt_addr) { | |
1384 | printf("Warning: U-Boot configured device %s at address %llx,\n" | |
1385 | " but the device tree has it address %llx.\n", | |
1386 | alias, addr, dt_addr); | |
1387 | return 0; | |
1388 | } | |
1389 | ||
1390 | return 1; | |
1391 | } | |
1392 | ||
1393 | /* | |
1394 | * Returns the base address of an SOC or PCI node | |
1395 | */ | |
1396 | u64 fdt_get_base_address(void *fdt, int node) | |
1397 | { | |
1398 | int size; | |
1399 | u32 naddr; | |
8aa5ec6e | 1400 | const fdt32_t *prop; |
bb682001 TT |
1401 | |
1402 | prop = fdt_getprop(fdt, node, "#address-cells", &size); | |
1403 | if (prop && size == 4) | |
8aa5ec6e | 1404 | naddr = be32_to_cpup(prop); |
bb682001 TT |
1405 | else |
1406 | naddr = 2; | |
1407 | ||
1408 | prop = fdt_getprop(fdt, node, "ranges", &size); | |
1409 | ||
1410 | return prop ? fdt_translate_address(fdt, node, prop + naddr) : 0; | |
1411 | } |