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Commit | Line | Data |
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83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
64dbbd40 GVB |
2 | /* |
3 | * (C) Copyright 2007 | |
4 | * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com | |
5 | * | |
2a523f52 | 6 | * Copyright 2010-2011 Freescale Semiconductor, Inc. |
64dbbd40 GVB |
7 | */ |
8 | ||
9 | #include <common.h> | |
9ad0a799 | 10 | #include <mapmem.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> |
b08c8c48 | 15 | #include <linux/libfdt.h> |
64dbbd40 | 16 | #include <fdt_support.h> |
151c8b09 | 17 | #include <exports.h> |
a0ae380b | 18 | #include <fdtdec.h> |
64dbbd40 | 19 | |
94fb182c AG |
20 | /** |
21 | * fdt_getprop_u32_default_node - Return a node's property or a default | |
22 | * | |
23 | * @fdt: ptr to device tree | |
24 | * @off: offset of node | |
25 | * @cell: cell offset in property | |
26 | * @prop: property name | |
27 | * @dflt: default value if the property isn't found | |
28 | * | |
29 | * Convenience function to return a node's property or a default value if | |
30 | * the property doesn't exist. | |
31 | */ | |
32 | u32 fdt_getprop_u32_default_node(const void *fdt, int off, int cell, | |
33 | const char *prop, const u32 dflt) | |
34 | { | |
35 | const fdt32_t *val; | |
36 | int len; | |
37 | ||
38 | val = fdt_getprop(fdt, off, prop, &len); | |
39 | ||
40 | /* Check if property exists */ | |
41 | if (!val) | |
42 | return dflt; | |
43 | ||
44 | /* Check if property is long enough */ | |
45 | if (len < ((cell + 1) * sizeof(uint32_t))) | |
46 | return dflt; | |
47 | ||
48 | return fdt32_to_cpu(*val); | |
49 | } | |
50 | ||
3bed2aaf KG |
51 | /** |
52 | * fdt_getprop_u32_default - Find a node and return it's property or a default | |
53 | * | |
54 | * @fdt: ptr to device tree | |
55 | * @path: path of node | |
56 | * @prop: property name | |
57 | * @dflt: default value if the property isn't found | |
58 | * | |
59 | * Convenience function to find a node and return it's property or a | |
60 | * default value if it doesn't exist. | |
61 | */ | |
07e12784 GB |
62 | u32 fdt_getprop_u32_default(const void *fdt, const char *path, |
63 | const char *prop, const u32 dflt) | |
3bed2aaf | 64 | { |
3bed2aaf KG |
65 | int off; |
66 | ||
67 | off = fdt_path_offset(fdt, path); | |
68 | if (off < 0) | |
69 | return dflt; | |
70 | ||
94fb182c | 71 | return fdt_getprop_u32_default_node(fdt, off, 0, prop, dflt); |
3bed2aaf | 72 | } |
64dbbd40 | 73 | |
a3c2933e KG |
74 | /** |
75 | * fdt_find_and_setprop: Find a node and set it's property | |
76 | * | |
77 | * @fdt: ptr to device tree | |
78 | * @node: path of node | |
79 | * @prop: property name | |
80 | * @val: ptr to new value | |
81 | * @len: length of new property value | |
82 | * @create: flag to create the property if it doesn't exist | |
83 | * | |
84 | * Convenience function to directly set a property given the path to the node. | |
85 | */ | |
86 | int fdt_find_and_setprop(void *fdt, const char *node, const char *prop, | |
87 | const void *val, int len, int create) | |
88 | { | |
8d04f02f | 89 | int nodeoff = fdt_path_offset(fdt, node); |
a3c2933e KG |
90 | |
91 | if (nodeoff < 0) | |
92 | return nodeoff; | |
93 | ||
8aa5ec6e | 94 | if ((!create) && (fdt_get_property(fdt, nodeoff, prop, NULL) == NULL)) |
a3c2933e KG |
95 | return 0; /* create flag not set; so exit quietly */ |
96 | ||
97 | return fdt_setprop(fdt, nodeoff, prop, val, len); | |
98 | } | |
99 | ||
8edb2192 | 100 | /** |
a9e8e291 SG |
101 | * fdt_find_or_add_subnode() - find or possibly add a subnode of a given node |
102 | * | |
8edb2192 MY |
103 | * @fdt: pointer to the device tree blob |
104 | * @parentoffset: structure block offset of a node | |
105 | * @name: name of the subnode to locate | |
106 | * | |
107 | * fdt_subnode_offset() finds a subnode of the node with a given name. | |
108 | * If the subnode does not exist, it will be created. | |
109 | */ | |
a9e8e291 | 110 | int fdt_find_or_add_subnode(void *fdt, int parentoffset, const char *name) |
8edb2192 MY |
111 | { |
112 | int offset; | |
113 | ||
114 | offset = fdt_subnode_offset(fdt, parentoffset, name); | |
115 | ||
116 | if (offset == -FDT_ERR_NOTFOUND) | |
117 | offset = fdt_add_subnode(fdt, parentoffset, name); | |
118 | ||
119 | if (offset < 0) | |
120 | printf("%s: %s: %s\n", __func__, name, fdt_strerror(offset)); | |
121 | ||
122 | return offset; | |
123 | } | |
124 | ||
972f2a89 MY |
125 | /* rename to CONFIG_OF_STDOUT_PATH ? */ |
126 | #if defined(OF_STDOUT_PATH) | |
127 | static int fdt_fixup_stdout(void *fdt, int chosenoff) | |
128 | { | |
129 | return fdt_setprop(fdt, chosenoff, "linux,stdout-path", | |
130 | OF_STDOUT_PATH, strlen(OF_STDOUT_PATH) + 1); | |
131 | } | |
132 | #elif defined(CONFIG_OF_STDOUT_VIA_ALIAS) && defined(CONFIG_CONS_INDEX) | |
40777812 | 133 | static int fdt_fixup_stdout(void *fdt, int chosenoff) |
151c8b09 | 134 | { |
972f2a89 MY |
135 | int err; |
136 | int aliasoff; | |
151c8b09 | 137 | char sername[9] = { 0 }; |
972f2a89 MY |
138 | const void *path; |
139 | int len; | |
140 | char tmp[256]; /* long enough */ | |
151c8b09 | 141 | |
9f29aeb8 | 142 | sprintf(sername, "serial%d", CONFIG_CONS_INDEX - 1); |
151c8b09 | 143 | |
972f2a89 MY |
144 | aliasoff = fdt_path_offset(fdt, "/aliases"); |
145 | if (aliasoff < 0) { | |
146 | err = aliasoff; | |
da77c819 | 147 | goto noalias; |
151c8b09 | 148 | } |
972f2a89 MY |
149 | |
150 | path = fdt_getprop(fdt, aliasoff, sername, &len); | |
151 | if (!path) { | |
152 | err = len; | |
da77c819 | 153 | goto noalias; |
972f2a89 MY |
154 | } |
155 | ||
156 | /* fdt_setprop may break "path" so we copy it to tmp buffer */ | |
157 | memcpy(tmp, path, len); | |
158 | ||
159 | err = fdt_setprop(fdt, chosenoff, "linux,stdout-path", tmp, len); | |
151c8b09 KG |
160 | if (err < 0) |
161 | printf("WARNING: could not set linux,stdout-path %s.\n", | |
972f2a89 | 162 | fdt_strerror(err)); |
151c8b09 KG |
163 | |
164 | return err; | |
da77c819 SW |
165 | |
166 | noalias: | |
167 | printf("WARNING: %s: could not read %s alias: %s\n", | |
168 | __func__, sername, fdt_strerror(err)); | |
169 | ||
170 | return 0; | |
151c8b09 | 171 | } |
972f2a89 MY |
172 | #else |
173 | static int fdt_fixup_stdout(void *fdt, int chosenoff) | |
174 | { | |
175 | return 0; | |
176 | } | |
151c8b09 KG |
177 | #endif |
178 | ||
f18295d3 MY |
179 | static inline int fdt_setprop_uxx(void *fdt, int nodeoffset, const char *name, |
180 | uint64_t val, int is_u64) | |
181 | { | |
182 | if (is_u64) | |
183 | return fdt_setprop_u64(fdt, nodeoffset, name, val); | |
184 | else | |
185 | return fdt_setprop_u32(fdt, nodeoffset, name, (uint32_t)val); | |
186 | } | |
187 | ||
10be5b5d PK |
188 | int fdt_root(void *fdt) |
189 | { | |
190 | char *serial; | |
191 | int err; | |
192 | ||
193 | err = fdt_check_header(fdt); | |
194 | if (err < 0) { | |
195 | printf("fdt_root: %s\n", fdt_strerror(err)); | |
196 | return err; | |
197 | } | |
198 | ||
00caae6d | 199 | serial = env_get("serial#"); |
10be5b5d PK |
200 | if (serial) { |
201 | err = fdt_setprop(fdt, 0, "serial-number", serial, | |
202 | strlen(serial) + 1); | |
203 | ||
204 | if (err < 0) { | |
205 | printf("WARNING: could not set serial-number %s.\n", | |
206 | fdt_strerror(err)); | |
207 | return err; | |
208 | } | |
209 | } | |
210 | ||
211 | return 0; | |
212 | } | |
f18295d3 | 213 | |
dbe963ae | 214 | int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end) |
64dbbd40 | 215 | { |
f18295d3 | 216 | int nodeoffset; |
2a1a2cb6 | 217 | int err, j, total; |
f18295d3 | 218 | int is_u64; |
2a1a2cb6 | 219 | uint64_t addr, size; |
64dbbd40 | 220 | |
50babaf8 MY |
221 | /* just return if the size of initrd is zero */ |
222 | if (initrd_start == initrd_end) | |
223 | return 0; | |
224 | ||
8edb2192 MY |
225 | /* find or create "/chosen" node. */ |
226 | nodeoffset = fdt_find_or_add_subnode(fdt, 0, "chosen"); | |
227 | if (nodeoffset < 0) | |
2a1a2cb6 | 228 | return nodeoffset; |
64dbbd40 | 229 | |
2a1a2cb6 KG |
230 | total = fdt_num_mem_rsv(fdt); |
231 | ||
232 | /* | |
233 | * Look for an existing entry and update it. If we don't find | |
234 | * the entry, we will j be the next available slot. | |
235 | */ | |
236 | for (j = 0; j < total; j++) { | |
237 | err = fdt_get_mem_rsv(fdt, j, &addr, &size); | |
238 | if (addr == initrd_start) { | |
239 | fdt_del_mem_rsv(fdt, j); | |
240 | break; | |
c28abb9c | 241 | } |
2a1a2cb6 | 242 | } |
8d04f02f | 243 | |
ce6b27a8 | 244 | err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start); |
2a1a2cb6 KG |
245 | if (err < 0) { |
246 | printf("fdt_initrd: %s\n", fdt_strerror(err)); | |
247 | return err; | |
248 | } | |
249 | ||
933cdbb4 | 250 | is_u64 = (fdt_address_cells(fdt, 0) == 2); |
f18295d3 MY |
251 | |
252 | err = fdt_setprop_uxx(fdt, nodeoffset, "linux,initrd-start", | |
253 | (uint64_t)initrd_start, is_u64); | |
f77a606a | 254 | |
dbe963ae MY |
255 | if (err < 0) { |
256 | printf("WARNING: could not set linux,initrd-start %s.\n", | |
257 | fdt_strerror(err)); | |
258 | return err; | |
259 | } | |
f18295d3 MY |
260 | |
261 | err = fdt_setprop_uxx(fdt, nodeoffset, "linux,initrd-end", | |
262 | (uint64_t)initrd_end, is_u64); | |
263 | ||
dbe963ae MY |
264 | if (err < 0) { |
265 | printf("WARNING: could not set linux,initrd-end %s.\n", | |
266 | fdt_strerror(err)); | |
2a1a2cb6 | 267 | |
dbe963ae | 268 | return err; |
64dbbd40 GVB |
269 | } |
270 | ||
2a1a2cb6 KG |
271 | return 0; |
272 | } | |
273 | ||
bc6ed0f9 | 274 | int fdt_chosen(void *fdt) |
2a1a2cb6 KG |
275 | { |
276 | int nodeoffset; | |
277 | int err; | |
278 | char *str; /* used to set string properties */ | |
2a1a2cb6 KG |
279 | |
280 | err = fdt_check_header(fdt); | |
281 | if (err < 0) { | |
282 | printf("fdt_chosen: %s\n", fdt_strerror(err)); | |
283 | return err; | |
284 | } | |
285 | ||
8edb2192 MY |
286 | /* find or create "/chosen" node. */ |
287 | nodeoffset = fdt_find_or_add_subnode(fdt, 0, "chosen"); | |
288 | if (nodeoffset < 0) | |
289 | return nodeoffset; | |
64dbbd40 | 290 | |
00caae6d | 291 | str = env_get("bootargs"); |
972f2a89 MY |
292 | if (str) { |
293 | err = fdt_setprop(fdt, nodeoffset, "bootargs", str, | |
294 | strlen(str) + 1); | |
295 | if (err < 0) { | |
bc6ed0f9 MY |
296 | printf("WARNING: could not set bootargs %s.\n", |
297 | fdt_strerror(err)); | |
972f2a89 MY |
298 | return err; |
299 | } | |
64dbbd40 | 300 | } |
2a1a2cb6 | 301 | |
972f2a89 | 302 | return fdt_fixup_stdout(fdt, nodeoffset); |
64dbbd40 GVB |
303 | } |
304 | ||
e93becf8 KG |
305 | void do_fixup_by_path(void *fdt, const char *path, const char *prop, |
306 | const void *val, int len, int create) | |
307 | { | |
308 | #if defined(DEBUG) | |
309 | int i; | |
d9ad115b | 310 | debug("Updating property '%s/%s' = ", path, prop); |
e93becf8 KG |
311 | for (i = 0; i < len; i++) |
312 | debug(" %.2x", *(u8*)(val+i)); | |
313 | debug("\n"); | |
314 | #endif | |
315 | int rc = fdt_find_and_setprop(fdt, path, prop, val, len, create); | |
316 | if (rc) | |
317 | printf("Unable to update property %s:%s, err=%s\n", | |
318 | path, prop, fdt_strerror(rc)); | |
319 | } | |
320 | ||
321 | void do_fixup_by_path_u32(void *fdt, const char *path, const char *prop, | |
322 | u32 val, int create) | |
323 | { | |
8aa5ec6e KP |
324 | fdt32_t tmp = cpu_to_fdt32(val); |
325 | do_fixup_by_path(fdt, path, prop, &tmp, sizeof(tmp), create); | |
e93becf8 KG |
326 | } |
327 | ||
9eb77cea KG |
328 | void do_fixup_by_prop(void *fdt, |
329 | const char *pname, const void *pval, int plen, | |
330 | const char *prop, const void *val, int len, | |
331 | int create) | |
332 | { | |
333 | int off; | |
334 | #if defined(DEBUG) | |
335 | int i; | |
d9ad115b | 336 | debug("Updating property '%s' = ", prop); |
9eb77cea KG |
337 | for (i = 0; i < len; i++) |
338 | debug(" %.2x", *(u8*)(val+i)); | |
339 | debug("\n"); | |
340 | #endif | |
341 | off = fdt_node_offset_by_prop_value(fdt, -1, pname, pval, plen); | |
342 | while (off != -FDT_ERR_NOTFOUND) { | |
8aa5ec6e | 343 | if (create || (fdt_get_property(fdt, off, prop, NULL) != NULL)) |
9eb77cea KG |
344 | fdt_setprop(fdt, off, prop, val, len); |
345 | off = fdt_node_offset_by_prop_value(fdt, off, pname, pval, plen); | |
346 | } | |
347 | } | |
348 | ||
349 | void do_fixup_by_prop_u32(void *fdt, | |
350 | const char *pname, const void *pval, int plen, | |
351 | const char *prop, u32 val, int create) | |
352 | { | |
8aa5ec6e KP |
353 | fdt32_t tmp = cpu_to_fdt32(val); |
354 | do_fixup_by_prop(fdt, pname, pval, plen, prop, &tmp, 4, create); | |
9eb77cea KG |
355 | } |
356 | ||
357 | void do_fixup_by_compat(void *fdt, const char *compat, | |
358 | const char *prop, const void *val, int len, int create) | |
359 | { | |
360 | int off = -1; | |
361 | #if defined(DEBUG) | |
362 | int i; | |
d9ad115b | 363 | debug("Updating property '%s' = ", prop); |
9eb77cea KG |
364 | for (i = 0; i < len; i++) |
365 | debug(" %.2x", *(u8*)(val+i)); | |
366 | debug("\n"); | |
367 | #endif | |
368 | off = fdt_node_offset_by_compatible(fdt, -1, compat); | |
369 | while (off != -FDT_ERR_NOTFOUND) { | |
8aa5ec6e | 370 | if (create || (fdt_get_property(fdt, off, prop, NULL) != NULL)) |
9eb77cea KG |
371 | fdt_setprop(fdt, off, prop, val, len); |
372 | off = fdt_node_offset_by_compatible(fdt, off, compat); | |
373 | } | |
374 | } | |
375 | ||
376 | void do_fixup_by_compat_u32(void *fdt, const char *compat, | |
377 | const char *prop, u32 val, int create) | |
378 | { | |
8aa5ec6e KP |
379 | fdt32_t tmp = cpu_to_fdt32(val); |
380 | do_fixup_by_compat(fdt, compat, prop, &tmp, 4, create); | |
9eb77cea KG |
381 | } |
382 | ||
63c09417 | 383 | #ifdef CONFIG_ARCH_FIXUP_FDT_MEMORY |
739a01ed MY |
384 | /* |
385 | * fdt_pack_reg - pack address and size array into the "reg"-suitable stream | |
386 | */ | |
41f09bbe SG |
387 | static int fdt_pack_reg(const void *fdt, void *buf, u64 *address, u64 *size, |
388 | int n) | |
739a01ed MY |
389 | { |
390 | int i; | |
ffccb84c HG |
391 | int address_cells = fdt_address_cells(fdt, 0); |
392 | int size_cells = fdt_size_cells(fdt, 0); | |
739a01ed MY |
393 | char *p = buf; |
394 | ||
395 | for (i = 0; i < n; i++) { | |
ffccb84c | 396 | if (address_cells == 2) |
739a01ed MY |
397 | *(fdt64_t *)p = cpu_to_fdt64(address[i]); |
398 | else | |
399 | *(fdt32_t *)p = cpu_to_fdt32(address[i]); | |
ffccb84c | 400 | p += 4 * address_cells; |
739a01ed | 401 | |
ffccb84c | 402 | if (size_cells == 2) |
739a01ed MY |
403 | *(fdt64_t *)p = cpu_to_fdt64(size[i]); |
404 | else | |
405 | *(fdt32_t *)p = cpu_to_fdt32(size[i]); | |
ffccb84c | 406 | p += 4 * size_cells; |
739a01ed MY |
407 | } |
408 | ||
409 | return p - (char *)buf; | |
410 | } | |
411 | ||
6b6f216f RF |
412 | #if CONFIG_NR_DRAM_BANKS > 4 |
413 | #define MEMORY_BANKS_MAX CONFIG_NR_DRAM_BANKS | |
414 | #else | |
8aa5ec6e | 415 | #define MEMORY_BANKS_MAX 4 |
6b6f216f | 416 | #endif |
a6bd9e83 JR |
417 | int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks) |
418 | { | |
419 | int err, nodeoffset; | |
6d29cc7d | 420 | int len, i; |
8aa5ec6e | 421 | u8 tmp[MEMORY_BANKS_MAX * 16]; /* Up to 64-bit address + 64-bit size */ |
3c927281 | 422 | |
8aa5ec6e KP |
423 | if (banks > MEMORY_BANKS_MAX) { |
424 | printf("%s: num banks %d exceeds hardcoded limit %d." | |
425 | " Recompile with higher MEMORY_BANKS_MAX?\n", | |
426 | __FUNCTION__, banks, MEMORY_BANKS_MAX); | |
427 | return -1; | |
428 | } | |
429 | ||
3c927281 KG |
430 | err = fdt_check_header(blob); |
431 | if (err < 0) { | |
432 | printf("%s: %s\n", __FUNCTION__, fdt_strerror(err)); | |
433 | return err; | |
434 | } | |
435 | ||
8edb2192 MY |
436 | /* find or create "/memory" node. */ |
437 | nodeoffset = fdt_find_or_add_subnode(blob, 0, "memory"); | |
438 | if (nodeoffset < 0) | |
35940de1 | 439 | return nodeoffset; |
8edb2192 | 440 | |
3c927281 KG |
441 | err = fdt_setprop(blob, nodeoffset, "device_type", "memory", |
442 | sizeof("memory")); | |
443 | if (err < 0) { | |
444 | printf("WARNING: could not set %s %s.\n", "device_type", | |
445 | fdt_strerror(err)); | |
446 | return err; | |
447 | } | |
448 | ||
ed5af03f TR |
449 | for (i = 0; i < banks; i++) { |
450 | if (start[i] == 0 && size[i] == 0) | |
451 | break; | |
452 | } | |
453 | ||
454 | banks = i; | |
455 | ||
5c1cf89f AP |
456 | if (!banks) |
457 | return 0; | |
458 | ||
739a01ed | 459 | len = fdt_pack_reg(blob, tmp, start, size, banks); |
3c927281 KG |
460 | |
461 | err = fdt_setprop(blob, nodeoffset, "reg", tmp, len); | |
462 | if (err < 0) { | |
463 | printf("WARNING: could not set %s %s.\n", | |
464 | "reg", fdt_strerror(err)); | |
465 | return err; | |
466 | } | |
467 | return 0; | |
468 | } | |
63c09417 | 469 | #endif |
3c927281 | 470 | |
a6bd9e83 JR |
471 | int fdt_fixup_memory(void *blob, u64 start, u64 size) |
472 | { | |
473 | return fdt_fixup_memory_banks(blob, &start, &size, 1); | |
474 | } | |
475 | ||
ba37aa03 | 476 | void fdt_fixup_ethernet(void *fdt) |
ab544633 | 477 | { |
24acb83d | 478 | int i = 0, j, prop; |
bc393a79 | 479 | char *tmp, *end; |
064d55f8 | 480 | char mac[16]; |
ab544633 | 481 | const char *path; |
a40db6d5 | 482 | unsigned char mac_addr[ARP_HLEN]; |
bc393a79 | 483 | int offset; |
24acb83d PK |
484 | #ifdef FDT_SEQ_MACADDR_FROM_ENV |
485 | int nodeoff; | |
486 | const struct fdt_property *fdt_prop; | |
487 | #endif | |
ab544633 | 488 | |
a434fd1d | 489 | if (fdt_path_offset(fdt, "/aliases") < 0) |
ba37aa03 KG |
490 | return; |
491 | ||
a434fd1d LI |
492 | /* Cycle through all aliases */ |
493 | for (prop = 0; ; prop++) { | |
bc393a79 | 494 | const char *name; |
bc393a79 | 495 | |
a434fd1d LI |
496 | /* FDT might have been edited, recompute the offset */ |
497 | offset = fdt_first_property_offset(fdt, | |
498 | fdt_path_offset(fdt, "/aliases")); | |
499 | /* Select property number 'prop' */ | |
24acb83d | 500 | for (j = 0; j < prop; j++) |
a434fd1d LI |
501 | offset = fdt_next_property_offset(fdt, offset); |
502 | ||
503 | if (offset < 0) | |
504 | break; | |
505 | ||
bc393a79 | 506 | path = fdt_getprop_by_offset(fdt, offset, &name, NULL); |
f8e57c65 TT |
507 | if (!strncmp(name, "ethernet", 8)) { |
508 | /* Treat plain "ethernet" same as "ethernet0". */ | |
24acb83d PK |
509 | if (!strcmp(name, "ethernet") |
510 | #ifdef FDT_SEQ_MACADDR_FROM_ENV | |
511 | || !strcmp(name, "ethernet0") | |
512 | #endif | |
513 | ) | |
f8e57c65 | 514 | i = 0; |
24acb83d | 515 | #ifndef FDT_SEQ_MACADDR_FROM_ENV |
f8e57c65 TT |
516 | else |
517 | i = trailing_strtol(name); | |
24acb83d | 518 | #endif |
bc393a79 BM |
519 | if (i != -1) { |
520 | if (i == 0) | |
521 | strcpy(mac, "ethaddr"); | |
522 | else | |
523 | sprintf(mac, "eth%daddr", i); | |
524 | } else { | |
525 | continue; | |
526 | } | |
24acb83d PK |
527 | #ifdef FDT_SEQ_MACADDR_FROM_ENV |
528 | nodeoff = fdt_path_offset(fdt, path); | |
529 | fdt_prop = fdt_get_property(fdt, nodeoff, "status", | |
530 | NULL); | |
531 | if (fdt_prop && !strcmp(fdt_prop->data, "disabled")) | |
532 | continue; | |
533 | i++; | |
534 | #endif | |
00caae6d | 535 | tmp = env_get(mac); |
bc393a79 BM |
536 | if (!tmp) |
537 | continue; | |
538 | ||
539 | for (j = 0; j < 6; j++) { | |
540 | mac_addr[j] = tmp ? | |
541 | simple_strtoul(tmp, &end, 16) : 0; | |
542 | if (tmp) | |
543 | tmp = (*end) ? end + 1 : end; | |
544 | } | |
545 | ||
546 | do_fixup_by_path(fdt, path, "mac-address", | |
547 | &mac_addr, 6, 0); | |
548 | do_fixup_by_path(fdt, path, "local-mac-address", | |
549 | &mac_addr, 6, 1); | |
ab544633 | 550 | } |
ab544633 KG |
551 | } |
552 | } | |
18e69a35 | 553 | |
a5af51a7 PT |
554 | int fdt_record_loadable(void *blob, u32 index, const char *name, |
555 | uintptr_t load_addr, u32 size, uintptr_t entry_point, | |
556 | const char *type, const char *os) | |
557 | { | |
558 | int err, node; | |
559 | ||
560 | err = fdt_check_header(blob); | |
561 | if (err < 0) { | |
562 | printf("%s: %s\n", __func__, fdt_strerror(err)); | |
563 | return err; | |
564 | } | |
565 | ||
566 | /* find or create "/fit-images" node */ | |
567 | node = fdt_find_or_add_subnode(blob, 0, "fit-images"); | |
568 | if (node < 0) | |
569 | return node; | |
570 | ||
571 | /* find or create "/fit-images/<name>" node */ | |
572 | node = fdt_find_or_add_subnode(blob, node, name); | |
573 | if (node < 0) | |
574 | return node; | |
575 | ||
576 | /* | |
577 | * We record these as 32bit entities, possibly truncating addresses. | |
578 | * However, spl_fit.c is not 64bit safe either: i.e. we should not | |
579 | * have an issue here. | |
580 | */ | |
581 | fdt_setprop_u32(blob, node, "load-addr", load_addr); | |
582 | if (entry_point != -1) | |
583 | fdt_setprop_u32(blob, node, "entry-point", entry_point); | |
584 | fdt_setprop_u32(blob, node, "size", size); | |
585 | if (type) | |
586 | fdt_setprop_string(blob, node, "type", type); | |
587 | if (os) | |
588 | fdt_setprop_string(blob, node, "os", os); | |
589 | ||
590 | return node; | |
591 | } | |
592 | ||
3082d234 | 593 | /* Resize the fdt to its actual size + a bit of padding */ |
ef476836 | 594 | int fdt_shrink_to_minimum(void *blob, uint extrasize) |
3082d234 KG |
595 | { |
596 | int i; | |
597 | uint64_t addr, size; | |
598 | int total, ret; | |
599 | uint actualsize; | |
600 | ||
601 | if (!blob) | |
602 | return 0; | |
603 | ||
604 | total = fdt_num_mem_rsv(blob); | |
605 | for (i = 0; i < total; i++) { | |
606 | fdt_get_mem_rsv(blob, i, &addr, &size); | |
92549358 | 607 | if (addr == (uintptr_t)blob) { |
3082d234 KG |
608 | fdt_del_mem_rsv(blob, i); |
609 | break; | |
610 | } | |
611 | } | |
612 | ||
f242a088 PK |
613 | /* |
614 | * Calculate the actual size of the fdt | |
3840ebfa FW |
615 | * plus the size needed for 5 fdt_add_mem_rsv, one |
616 | * for the fdt itself and 4 for a possible initrd | |
617 | * ((initrd-start + initrd-end) * 2 (name & value)) | |
f242a088 | 618 | */ |
3082d234 | 619 | actualsize = fdt_off_dt_strings(blob) + |
3840ebfa | 620 | fdt_size_dt_strings(blob) + 5 * sizeof(struct fdt_reserve_entry); |
3082d234 | 621 | |
ef476836 | 622 | actualsize += extrasize; |
3082d234 | 623 | /* Make it so the fdt ends on a page boundary */ |
92549358 SG |
624 | actualsize = ALIGN(actualsize + ((uintptr_t)blob & 0xfff), 0x1000); |
625 | actualsize = actualsize - ((uintptr_t)blob & 0xfff); | |
3082d234 KG |
626 | |
627 | /* Change the fdt header to reflect the correct size */ | |
628 | fdt_set_totalsize(blob, actualsize); | |
629 | ||
630 | /* Add the new reservation */ | |
9ad0a799 | 631 | ret = fdt_add_mem_rsv(blob, map_to_sysmem(blob), actualsize); |
3082d234 KG |
632 | if (ret < 0) |
633 | return ret; | |
634 | ||
635 | return actualsize; | |
636 | } | |
8ab451c4 KG |
637 | |
638 | #ifdef CONFIG_PCI | |
cfd700be | 639 | #define CONFIG_SYS_PCI_NR_INBOUND_WIN 4 |
8ab451c4 KG |
640 | |
641 | #define FDT_PCI_PREFETCH (0x40000000) | |
642 | #define FDT_PCI_MEM32 (0x02000000) | |
643 | #define FDT_PCI_IO (0x01000000) | |
644 | #define FDT_PCI_MEM64 (0x03000000) | |
645 | ||
646 | int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose) { | |
647 | ||
648 | int addrcell, sizecell, len, r; | |
649 | u32 *dma_range; | |
650 | /* sized based on pci addr cells, size-cells, & address-cells */ | |
651 | u32 dma_ranges[(3 + 2 + 2) * CONFIG_SYS_PCI_NR_INBOUND_WIN]; | |
652 | ||
653 | addrcell = fdt_getprop_u32_default(blob, "/", "#address-cells", 1); | |
654 | sizecell = fdt_getprop_u32_default(blob, "/", "#size-cells", 1); | |
655 | ||
656 | dma_range = &dma_ranges[0]; | |
657 | for (r = 0; r < hose->region_count; r++) { | |
658 | u64 bus_start, phys_start, size; | |
659 | ||
ff4e66e9 KG |
660 | /* skip if !PCI_REGION_SYS_MEMORY */ |
661 | if (!(hose->regions[r].flags & PCI_REGION_SYS_MEMORY)) | |
8ab451c4 KG |
662 | continue; |
663 | ||
664 | bus_start = (u64)hose->regions[r].bus_start; | |
665 | phys_start = (u64)hose->regions[r].phys_start; | |
666 | size = (u64)hose->regions[r].size; | |
667 | ||
668 | dma_range[0] = 0; | |
cfd700be | 669 | if (size >= 0x100000000ull) |
8ab451c4 KG |
670 | dma_range[0] |= FDT_PCI_MEM64; |
671 | else | |
672 | dma_range[0] |= FDT_PCI_MEM32; | |
673 | if (hose->regions[r].flags & PCI_REGION_PREFETCH) | |
674 | dma_range[0] |= FDT_PCI_PREFETCH; | |
675 | #ifdef CONFIG_SYS_PCI_64BIT | |
676 | dma_range[1] = bus_start >> 32; | |
677 | #else | |
678 | dma_range[1] = 0; | |
679 | #endif | |
680 | dma_range[2] = bus_start & 0xffffffff; | |
681 | ||
682 | if (addrcell == 2) { | |
683 | dma_range[3] = phys_start >> 32; | |
684 | dma_range[4] = phys_start & 0xffffffff; | |
685 | } else { | |
686 | dma_range[3] = phys_start & 0xffffffff; | |
687 | } | |
688 | ||
689 | if (sizecell == 2) { | |
690 | dma_range[3 + addrcell + 0] = size >> 32; | |
691 | dma_range[3 + addrcell + 1] = size & 0xffffffff; | |
692 | } else { | |
693 | dma_range[3 + addrcell + 0] = size & 0xffffffff; | |
694 | } | |
695 | ||
696 | dma_range += (3 + addrcell + sizecell); | |
697 | } | |
698 | ||
699 | len = dma_range - &dma_ranges[0]; | |
700 | if (len) | |
701 | fdt_setprop(blob, phb_off, "dma-ranges", &dma_ranges[0], len*4); | |
702 | ||
703 | return 0; | |
704 | } | |
705 | #endif | |
30d45c0d | 706 | |
cb2707af MM |
707 | int fdt_increase_size(void *fdt, int add_len) |
708 | { | |
709 | int newlen; | |
710 | ||
711 | newlen = fdt_totalsize(fdt) + add_len; | |
712 | ||
713 | /* Open in place with a new len */ | |
714 | return fdt_open_into(fdt, fdt, newlen); | |
715 | } | |
716 | ||
3c950e2e AG |
717 | #ifdef CONFIG_FDT_FIXUP_PARTITIONS |
718 | #include <jffs2/load_kernel.h> | |
719 | #include <mtd_node.h> | |
720 | ||
721 | struct reg_cell { | |
722 | unsigned int r0; | |
723 | unsigned int r1; | |
724 | }; | |
725 | ||
cd1457d7 | 726 | static int fdt_del_subnodes(const void *blob, int parent_offset) |
3c950e2e AG |
727 | { |
728 | int off, ndepth; | |
729 | int ret; | |
730 | ||
731 | for (ndepth = 0, off = fdt_next_node(blob, parent_offset, &ndepth); | |
732 | (off >= 0) && (ndepth > 0); | |
733 | off = fdt_next_node(blob, off, &ndepth)) { | |
734 | if (ndepth == 1) { | |
735 | debug("delete %s: offset: %x\n", | |
736 | fdt_get_name(blob, off, 0), off); | |
737 | ret = fdt_del_node((void *)blob, off); | |
738 | if (ret < 0) { | |
739 | printf("Can't delete node: %s\n", | |
740 | fdt_strerror(ret)); | |
741 | return ret; | |
742 | } else { | |
743 | ndepth = 0; | |
744 | off = parent_offset; | |
745 | } | |
746 | } | |
747 | } | |
748 | return 0; | |
749 | } | |
750 | ||
cd1457d7 | 751 | static int fdt_del_partitions(void *blob, int parent_offset) |
3c950e2e AG |
752 | { |
753 | const void *prop; | |
754 | int ndepth = 0; | |
755 | int off; | |
756 | int ret; | |
757 | ||
758 | off = fdt_next_node(blob, parent_offset, &ndepth); | |
759 | if (off > 0 && ndepth == 1) { | |
760 | prop = fdt_getprop(blob, off, "label", NULL); | |
761 | if (prop == NULL) { | |
762 | /* | |
763 | * Could not find label property, nand {}; node? | |
764 | * Check subnode, delete partitions there if any. | |
765 | */ | |
766 | return fdt_del_partitions(blob, off); | |
767 | } else { | |
768 | ret = fdt_del_subnodes(blob, parent_offset); | |
769 | if (ret < 0) { | |
770 | printf("Can't remove subnodes: %s\n", | |
771 | fdt_strerror(ret)); | |
772 | return ret; | |
773 | } | |
774 | } | |
775 | } | |
776 | return 0; | |
777 | } | |
778 | ||
779 | int fdt_node_set_part_info(void *blob, int parent_offset, | |
780 | struct mtd_device *dev) | |
781 | { | |
782 | struct list_head *pentry; | |
783 | struct part_info *part; | |
784 | struct reg_cell cell; | |
785 | int off, ndepth = 0; | |
786 | int part_num, ret; | |
787 | char buf[64]; | |
788 | ||
789 | ret = fdt_del_partitions(blob, parent_offset); | |
790 | if (ret < 0) | |
791 | return ret; | |
792 | ||
793 | /* | |
794 | * Check if it is nand {}; subnode, adjust | |
795 | * the offset in this case | |
796 | */ | |
797 | off = fdt_next_node(blob, parent_offset, &ndepth); | |
798 | if (off > 0 && ndepth == 1) | |
799 | parent_offset = off; | |
800 | ||
801 | part_num = 0; | |
802 | list_for_each_prev(pentry, &dev->parts) { | |
803 | int newoff; | |
804 | ||
805 | part = list_entry(pentry, struct part_info, link); | |
806 | ||
06503f16 | 807 | debug("%2d: %-20s0x%08llx\t0x%08llx\t%d\n", |
3c950e2e AG |
808 | part_num, part->name, part->size, |
809 | part->offset, part->mask_flags); | |
810 | ||
06503f16 | 811 | sprintf(buf, "partition@%llx", part->offset); |
3c950e2e AG |
812 | add_sub: |
813 | ret = fdt_add_subnode(blob, parent_offset, buf); | |
814 | if (ret == -FDT_ERR_NOSPACE) { | |
815 | ret = fdt_increase_size(blob, 512); | |
816 | if (!ret) | |
817 | goto add_sub; | |
818 | else | |
819 | goto err_size; | |
820 | } else if (ret < 0) { | |
821 | printf("Can't add partition node: %s\n", | |
822 | fdt_strerror(ret)); | |
823 | return ret; | |
824 | } | |
825 | newoff = ret; | |
826 | ||
827 | /* Check MTD_WRITEABLE_CMD flag */ | |
828 | if (part->mask_flags & 1) { | |
829 | add_ro: | |
830 | ret = fdt_setprop(blob, newoff, "read_only", NULL, 0); | |
831 | if (ret == -FDT_ERR_NOSPACE) { | |
832 | ret = fdt_increase_size(blob, 512); | |
833 | if (!ret) | |
834 | goto add_ro; | |
835 | else | |
836 | goto err_size; | |
837 | } else if (ret < 0) | |
838 | goto err_prop; | |
839 | } | |
840 | ||
841 | cell.r0 = cpu_to_fdt32(part->offset); | |
842 | cell.r1 = cpu_to_fdt32(part->size); | |
843 | add_reg: | |
844 | ret = fdt_setprop(blob, newoff, "reg", &cell, sizeof(cell)); | |
845 | if (ret == -FDT_ERR_NOSPACE) { | |
846 | ret = fdt_increase_size(blob, 512); | |
847 | if (!ret) | |
848 | goto add_reg; | |
849 | else | |
850 | goto err_size; | |
851 | } else if (ret < 0) | |
852 | goto err_prop; | |
853 | ||
854 | add_label: | |
855 | ret = fdt_setprop_string(blob, newoff, "label", part->name); | |
856 | if (ret == -FDT_ERR_NOSPACE) { | |
857 | ret = fdt_increase_size(blob, 512); | |
858 | if (!ret) | |
859 | goto add_label; | |
860 | else | |
861 | goto err_size; | |
862 | } else if (ret < 0) | |
863 | goto err_prop; | |
864 | ||
865 | part_num++; | |
866 | } | |
867 | return 0; | |
868 | err_size: | |
869 | printf("Can't increase blob size: %s\n", fdt_strerror(ret)); | |
870 | return ret; | |
871 | err_prop: | |
872 | printf("Can't add property: %s\n", fdt_strerror(ret)); | |
873 | return ret; | |
874 | } | |
875 | ||
876 | /* | |
877 | * Update partitions in nor/nand nodes using info from | |
878 | * mtdparts environment variable. The nodes to update are | |
879 | * specified by node_info structure which contains mtd device | |
880 | * type and compatible string: E. g. the board code in | |
881 | * ft_board_setup() could use: | |
882 | * | |
883 | * struct node_info nodes[] = { | |
884 | * { "fsl,mpc5121-nfc", MTD_DEV_TYPE_NAND, }, | |
885 | * { "cfi-flash", MTD_DEV_TYPE_NOR, }, | |
886 | * }; | |
887 | * | |
888 | * fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes)); | |
889 | */ | |
5f4e32d0 MY |
890 | void fdt_fixup_mtdparts(void *blob, const struct node_info *node_info, |
891 | int node_info_size) | |
3c950e2e | 892 | { |
3c950e2e | 893 | struct mtd_device *dev; |
3c950e2e AG |
894 | int i, idx; |
895 | int noff; | |
896 | ||
3c950e2e AG |
897 | if (mtdparts_init() != 0) |
898 | return; | |
899 | ||
900 | for (i = 0; i < node_info_size; i++) { | |
901 | idx = 0; | |
5f4e32d0 MY |
902 | noff = fdt_node_offset_by_compatible(blob, -1, |
903 | node_info[i].compat); | |
3c950e2e AG |
904 | while (noff != -FDT_ERR_NOTFOUND) { |
905 | debug("%s: %s, mtd dev type %d\n", | |
906 | fdt_get_name(blob, noff, 0), | |
5f4e32d0 MY |
907 | node_info[i].compat, node_info[i].type); |
908 | dev = device_find(node_info[i].type, idx++); | |
3c950e2e AG |
909 | if (dev) { |
910 | if (fdt_node_set_part_info(blob, noff, dev)) | |
911 | return; /* return on error */ | |
912 | } | |
913 | ||
914 | /* Jump to next flash node */ | |
915 | noff = fdt_node_offset_by_compatible(blob, noff, | |
5f4e32d0 | 916 | node_info[i].compat); |
3c950e2e AG |
917 | } |
918 | } | |
919 | } | |
920 | #endif | |
49b97d9c KG |
921 | |
922 | void fdt_del_node_and_alias(void *blob, const char *alias) | |
923 | { | |
924 | int off = fdt_path_offset(blob, alias); | |
925 | ||
926 | if (off < 0) | |
927 | return; | |
928 | ||
929 | fdt_del_node(blob, off); | |
930 | ||
931 | off = fdt_path_offset(blob, "/aliases"); | |
932 | fdt_delprop(blob, off, alias); | |
933 | } | |
a0342c08 | 934 | |
a0342c08 KG |
935 | /* Max address size we deal with */ |
936 | #define OF_MAX_ADDR_CELLS 4 | |
a0ae380b | 937 | #define OF_BAD_ADDR FDT_ADDR_T_NONE |
4428f3c8 PM |
938 | #define OF_CHECK_COUNTS(na, ns) ((na) > 0 && (na) <= OF_MAX_ADDR_CELLS && \ |
939 | (ns) > 0) | |
a0342c08 KG |
940 | |
941 | /* Debug utility */ | |
942 | #ifdef DEBUG | |
8aa5ec6e | 943 | static void of_dump_addr(const char *s, const fdt32_t *addr, int na) |
a0342c08 KG |
944 | { |
945 | printf("%s", s); | |
946 | while(na--) | |
947 | printf(" %08x", *(addr++)); | |
948 | printf("\n"); | |
949 | } | |
950 | #else | |
8aa5ec6e | 951 | static void of_dump_addr(const char *s, const fdt32_t *addr, int na) { } |
a0342c08 KG |
952 | #endif |
953 | ||
0a222d53 PB |
954 | /** |
955 | * struct of_bus - Callbacks for bus specific translators | |
49717b18 PB |
956 | * @name: A string used to identify this bus in debug output. |
957 | * @addresses: The name of the DT property from which addresses are | |
958 | * to be read, typically "reg". | |
0a222d53 PB |
959 | * @match: Return non-zero if the node whose parent is at |
960 | * parentoffset in the FDT blob corresponds to a bus | |
961 | * of this type, otherwise return zero. If NULL a match | |
962 | * is assumed. | |
49717b18 PB |
963 | * @count_cells:Count how many cells (be32 values) a node whose parent |
964 | * is at parentoffset in the FDT blob will require to | |
965 | * represent its address (written to *addrc) & size | |
966 | * (written to *sizec). | |
967 | * @map: Map the address addr from the address space of this | |
968 | * bus to that of its parent, making use of the ranges | |
969 | * read from DT to an array at range. na and ns are the | |
970 | * number of cells (be32 values) used to hold and address | |
971 | * or size, respectively, for this bus. pna is the number | |
972 | * of cells used to hold an address for the parent bus. | |
973 | * Returns the address in the address space of the parent | |
974 | * bus. | |
975 | * @translate: Update the value of the address cells at addr within an | |
976 | * FDT by adding offset to it. na specifies the number of | |
977 | * cells used to hold the address being translated. Returns | |
978 | * zero on success, non-zero on error. | |
0a222d53 PB |
979 | * |
980 | * Each bus type will include a struct of_bus in the of_busses array, | |
981 | * providing implementations of some or all of the functions used to | |
982 | * match the bus & handle address translation for its children. | |
983 | */ | |
a0342c08 KG |
984 | struct of_bus { |
985 | const char *name; | |
986 | const char *addresses; | |
11e44fc6 SW |
987 | int (*match)(const void *blob, int parentoffset); |
988 | void (*count_cells)(const void *blob, int parentoffset, | |
a0342c08 | 989 | int *addrc, int *sizec); |
8aa5ec6e | 990 | u64 (*map)(fdt32_t *addr, const fdt32_t *range, |
a0342c08 | 991 | int na, int ns, int pna); |
8aa5ec6e | 992 | int (*translate)(fdt32_t *addr, u64 offset, int na); |
a0342c08 KG |
993 | }; |
994 | ||
995 | /* Default translator (generic bus) */ | |
eed36609 | 996 | void fdt_support_default_count_cells(const void *blob, int parentoffset, |
a0342c08 KG |
997 | int *addrc, int *sizec) |
998 | { | |
8aa5ec6e | 999 | const fdt32_t *prop; |
6395f318 | 1000 | |
933cdbb4 SG |
1001 | if (addrc) |
1002 | *addrc = fdt_address_cells(blob, parentoffset); | |
6395f318 SW |
1003 | |
1004 | if (sizec) { | |
1005 | prop = fdt_getprop(blob, parentoffset, "#size-cells", NULL); | |
1006 | if (prop) | |
8aa5ec6e | 1007 | *sizec = be32_to_cpup(prop); |
6395f318 SW |
1008 | else |
1009 | *sizec = 1; | |
1010 | } | |
a0342c08 KG |
1011 | } |
1012 | ||
8aa5ec6e | 1013 | static u64 of_bus_default_map(fdt32_t *addr, const fdt32_t *range, |
a0342c08 KG |
1014 | int na, int ns, int pna) |
1015 | { | |
1016 | u64 cp, s, da; | |
1017 | ||
eed36609 SG |
1018 | cp = fdt_read_number(range, na); |
1019 | s = fdt_read_number(range + na + pna, ns); | |
1020 | da = fdt_read_number(addr, na); | |
a0342c08 | 1021 | |
d8e9cf4d | 1022 | debug("OF: default map, cp=%llx, s=%llx, da=%llx\n", cp, s, da); |
a0342c08 KG |
1023 | |
1024 | if (da < cp || da >= (cp + s)) | |
1025 | return OF_BAD_ADDR; | |
1026 | return da - cp; | |
1027 | } | |
1028 | ||
8aa5ec6e | 1029 | static int of_bus_default_translate(fdt32_t *addr, u64 offset, int na) |
a0342c08 | 1030 | { |
eed36609 | 1031 | u64 a = fdt_read_number(addr, na); |
a0342c08 KG |
1032 | memset(addr, 0, na * 4); |
1033 | a += offset; | |
1034 | if (na > 1) | |
8aa5ec6e KP |
1035 | addr[na - 2] = cpu_to_fdt32(a >> 32); |
1036 | addr[na - 1] = cpu_to_fdt32(a & 0xffffffffu); | |
a0342c08 KG |
1037 | |
1038 | return 0; | |
1039 | } | |
1040 | ||
0a222d53 PB |
1041 | #ifdef CONFIG_OF_ISA_BUS |
1042 | ||
1043 | /* ISA bus translator */ | |
11e44fc6 | 1044 | static int of_bus_isa_match(const void *blob, int parentoffset) |
0a222d53 PB |
1045 | { |
1046 | const char *name; | |
1047 | ||
1048 | name = fdt_get_name(blob, parentoffset, NULL); | |
1049 | if (!name) | |
1050 | return 0; | |
1051 | ||
1052 | return !strcmp(name, "isa"); | |
1053 | } | |
1054 | ||
11e44fc6 | 1055 | static void of_bus_isa_count_cells(const void *blob, int parentoffset, |
0a222d53 PB |
1056 | int *addrc, int *sizec) |
1057 | { | |
1058 | if (addrc) | |
1059 | *addrc = 2; | |
1060 | if (sizec) | |
1061 | *sizec = 1; | |
1062 | } | |
1063 | ||
1064 | static u64 of_bus_isa_map(fdt32_t *addr, const fdt32_t *range, | |
1065 | int na, int ns, int pna) | |
1066 | { | |
1067 | u64 cp, s, da; | |
1068 | ||
1069 | /* Check address type match */ | |
1070 | if ((addr[0] ^ range[0]) & cpu_to_be32(1)) | |
1071 | return OF_BAD_ADDR; | |
1072 | ||
eed36609 SG |
1073 | cp = fdt_read_number(range + 1, na - 1); |
1074 | s = fdt_read_number(range + na + pna, ns); | |
1075 | da = fdt_read_number(addr + 1, na - 1); | |
0a222d53 | 1076 | |
d8e9cf4d | 1077 | debug("OF: ISA map, cp=%llx, s=%llx, da=%llx\n", cp, s, da); |
0a222d53 PB |
1078 | |
1079 | if (da < cp || da >= (cp + s)) | |
1080 | return OF_BAD_ADDR; | |
1081 | return da - cp; | |
1082 | } | |
1083 | ||
1084 | static int of_bus_isa_translate(fdt32_t *addr, u64 offset, int na) | |
1085 | { | |
1086 | return of_bus_default_translate(addr + 1, offset, na - 1); | |
1087 | } | |
1088 | ||
1089 | #endif /* CONFIG_OF_ISA_BUS */ | |
1090 | ||
a0342c08 KG |
1091 | /* Array of bus specific translators */ |
1092 | static struct of_bus of_busses[] = { | |
0a222d53 PB |
1093 | #ifdef CONFIG_OF_ISA_BUS |
1094 | /* ISA */ | |
1095 | { | |
1096 | .name = "isa", | |
1097 | .addresses = "reg", | |
1098 | .match = of_bus_isa_match, | |
1099 | .count_cells = of_bus_isa_count_cells, | |
1100 | .map = of_bus_isa_map, | |
1101 | .translate = of_bus_isa_translate, | |
1102 | }, | |
1103 | #endif /* CONFIG_OF_ISA_BUS */ | |
a0342c08 KG |
1104 | /* Default */ |
1105 | { | |
1106 | .name = "default", | |
1107 | .addresses = "reg", | |
eed36609 | 1108 | .count_cells = fdt_support_default_count_cells, |
a0342c08 KG |
1109 | .map = of_bus_default_map, |
1110 | .translate = of_bus_default_translate, | |
1111 | }, | |
1112 | }; | |
1113 | ||
11e44fc6 | 1114 | static struct of_bus *of_match_bus(const void *blob, int parentoffset) |
0a222d53 PB |
1115 | { |
1116 | struct of_bus *bus; | |
1117 | ||
1118 | if (ARRAY_SIZE(of_busses) == 1) | |
1119 | return of_busses; | |
1120 | ||
1121 | for (bus = of_busses; bus; bus++) { | |
1122 | if (!bus->match || bus->match(blob, parentoffset)) | |
1123 | return bus; | |
1124 | } | |
1125 | ||
1126 | /* | |
1127 | * We should always have matched the default bus at least, since | |
1128 | * it has a NULL match field. If we didn't then it somehow isn't | |
1129 | * in the of_busses array or something equally catastrophic has | |
1130 | * gone wrong. | |
1131 | */ | |
1132 | assert(0); | |
1133 | return NULL; | |
1134 | } | |
1135 | ||
11e44fc6 | 1136 | static int of_translate_one(const void *blob, int parent, struct of_bus *bus, |
8aa5ec6e | 1137 | struct of_bus *pbus, fdt32_t *addr, |
a0342c08 KG |
1138 | int na, int ns, int pna, const char *rprop) |
1139 | { | |
8aa5ec6e | 1140 | const fdt32_t *ranges; |
a0342c08 KG |
1141 | int rlen; |
1142 | int rone; | |
1143 | u64 offset = OF_BAD_ADDR; | |
1144 | ||
1145 | /* Normally, an absence of a "ranges" property means we are | |
1146 | * crossing a non-translatable boundary, and thus the addresses | |
1147 | * below the current not cannot be converted to CPU physical ones. | |
1148 | * Unfortunately, while this is very clear in the spec, it's not | |
1149 | * what Apple understood, and they do have things like /uni-n or | |
1150 | * /ht nodes with no "ranges" property and a lot of perfectly | |
1151 | * useable mapped devices below them. Thus we treat the absence of | |
1152 | * "ranges" as equivalent to an empty "ranges" property which means | |
1153 | * a 1:1 translation at that level. It's up to the caller not to try | |
1154 | * to translate addresses that aren't supposed to be translated in | |
1155 | * the first place. --BenH. | |
1156 | */ | |
8aa5ec6e | 1157 | ranges = fdt_getprop(blob, parent, rprop, &rlen); |
a0342c08 | 1158 | if (ranges == NULL || rlen == 0) { |
eed36609 | 1159 | offset = fdt_read_number(addr, na); |
a0342c08 KG |
1160 | memset(addr, 0, pna * 4); |
1161 | debug("OF: no ranges, 1:1 translation\n"); | |
1162 | goto finish; | |
1163 | } | |
1164 | ||
1165 | debug("OF: walking ranges...\n"); | |
1166 | ||
1167 | /* Now walk through the ranges */ | |
1168 | rlen /= 4; | |
1169 | rone = na + pna + ns; | |
1170 | for (; rlen >= rone; rlen -= rone, ranges += rone) { | |
1171 | offset = bus->map(addr, ranges, na, ns, pna); | |
1172 | if (offset != OF_BAD_ADDR) | |
1173 | break; | |
1174 | } | |
1175 | if (offset == OF_BAD_ADDR) { | |
1176 | debug("OF: not found !\n"); | |
1177 | return 1; | |
1178 | } | |
1179 | memcpy(addr, ranges + na, 4 * pna); | |
1180 | ||
1181 | finish: | |
1182 | of_dump_addr("OF: parent translation for:", addr, pna); | |
dee37fc9 | 1183 | debug("OF: with offset: %llu\n", offset); |
a0342c08 KG |
1184 | |
1185 | /* Translate it into parent bus space */ | |
1186 | return pbus->translate(addr, offset, pna); | |
1187 | } | |
1188 | ||
1189 | /* | |
1190 | * Translate an address from the device-tree into a CPU physical address, | |
1191 | * this walks up the tree and applies the various bus mappings on the | |
1192 | * way. | |
1193 | * | |
1194 | * Note: We consider that crossing any level with #size-cells == 0 to mean | |
1195 | * that translation is impossible (that is we are not dealing with a value | |
1196 | * that can be mapped to a cpu physical address). This is not really specified | |
1197 | * that way, but this is traditionally the way IBM at least do things | |
1198 | */ | |
11e44fc6 SW |
1199 | static u64 __of_translate_address(const void *blob, int node_offset, |
1200 | const fdt32_t *in_addr, const char *rprop) | |
a0342c08 KG |
1201 | { |
1202 | int parent; | |
1203 | struct of_bus *bus, *pbus; | |
8aa5ec6e | 1204 | fdt32_t addr[OF_MAX_ADDR_CELLS]; |
a0342c08 KG |
1205 | int na, ns, pna, pns; |
1206 | u64 result = OF_BAD_ADDR; | |
1207 | ||
1208 | debug("OF: ** translation for device %s **\n", | |
1209 | fdt_get_name(blob, node_offset, NULL)); | |
1210 | ||
1211 | /* Get parent & match bus type */ | |
1212 | parent = fdt_parent_offset(blob, node_offset); | |
1213 | if (parent < 0) | |
1214 | goto bail; | |
0a222d53 | 1215 | bus = of_match_bus(blob, parent); |
a0342c08 KG |
1216 | |
1217 | /* Cound address cells & copy address locally */ | |
6395f318 | 1218 | bus->count_cells(blob, parent, &na, &ns); |
4428f3c8 | 1219 | if (!OF_CHECK_COUNTS(na, ns)) { |
a0342c08 KG |
1220 | printf("%s: Bad cell count for %s\n", __FUNCTION__, |
1221 | fdt_get_name(blob, node_offset, NULL)); | |
1222 | goto bail; | |
1223 | } | |
1224 | memcpy(addr, in_addr, na * 4); | |
1225 | ||
1226 | debug("OF: bus is %s (na=%d, ns=%d) on %s\n", | |
1227 | bus->name, na, ns, fdt_get_name(blob, parent, NULL)); | |
1228 | of_dump_addr("OF: translating address:", addr, na); | |
1229 | ||
1230 | /* Translate */ | |
1231 | for (;;) { | |
1232 | /* Switch to parent bus */ | |
1233 | node_offset = parent; | |
1234 | parent = fdt_parent_offset(blob, node_offset); | |
1235 | ||
1236 | /* If root, we have finished */ | |
1237 | if (parent < 0) { | |
1238 | debug("OF: reached root node\n"); | |
eed36609 | 1239 | result = fdt_read_number(addr, na); |
a0342c08 KG |
1240 | break; |
1241 | } | |
1242 | ||
1243 | /* Get new parent bus and counts */ | |
0a222d53 | 1244 | pbus = of_match_bus(blob, parent); |
6395f318 | 1245 | pbus->count_cells(blob, parent, &pna, &pns); |
4428f3c8 | 1246 | if (!OF_CHECK_COUNTS(pna, pns)) { |
a0342c08 KG |
1247 | printf("%s: Bad cell count for %s\n", __FUNCTION__, |
1248 | fdt_get_name(blob, node_offset, NULL)); | |
1249 | break; | |
1250 | } | |
1251 | ||
1252 | debug("OF: parent bus is %s (na=%d, ns=%d) on %s\n", | |
1253 | pbus->name, pna, pns, fdt_get_name(blob, parent, NULL)); | |
1254 | ||
1255 | /* Apply bus translation */ | |
1256 | if (of_translate_one(blob, node_offset, bus, pbus, | |
1257 | addr, na, ns, pna, rprop)) | |
1258 | break; | |
1259 | ||
1260 | /* Complete the move up one level */ | |
1261 | na = pna; | |
1262 | ns = pns; | |
1263 | bus = pbus; | |
1264 | ||
1265 | of_dump_addr("OF: one level translation:", addr, na); | |
1266 | } | |
1267 | bail: | |
1268 | ||
1269 | return result; | |
1270 | } | |
1271 | ||
11e44fc6 SW |
1272 | u64 fdt_translate_address(const void *blob, int node_offset, |
1273 | const fdt32_t *in_addr) | |
a0342c08 KG |
1274 | { |
1275 | return __of_translate_address(blob, node_offset, in_addr, "ranges"); | |
1276 | } | |
75e73afd KG |
1277 | |
1278 | /** | |
1279 | * fdt_node_offset_by_compat_reg: Find a node that matches compatiable and | |
1280 | * who's reg property matches a physical cpu address | |
1281 | * | |
1282 | * @blob: ptr to device tree | |
1283 | * @compat: compatiable string to match | |
1284 | * @compat_off: property name | |
1285 | * | |
1286 | */ | |
1287 | int fdt_node_offset_by_compat_reg(void *blob, const char *compat, | |
1288 | phys_addr_t compat_off) | |
1289 | { | |
1290 | int len, off = fdt_node_offset_by_compatible(blob, -1, compat); | |
1291 | while (off != -FDT_ERR_NOTFOUND) { | |
8aa5ec6e | 1292 | const fdt32_t *reg = fdt_getprop(blob, off, "reg", &len); |
75e73afd KG |
1293 | if (reg) { |
1294 | if (compat_off == fdt_translate_address(blob, off, reg)) | |
1295 | return off; | |
1296 | } | |
1297 | off = fdt_node_offset_by_compatible(blob, off, compat); | |
1298 | } | |
1299 | ||
1300 | return -FDT_ERR_NOTFOUND; | |
1301 | } | |
1302 | ||
b4b847e9 KG |
1303 | /** |
1304 | * fdt_alloc_phandle: Return next free phandle value | |
1305 | * | |
1306 | * @blob: ptr to device tree | |
1307 | */ | |
1308 | int fdt_alloc_phandle(void *blob) | |
1309 | { | |
b4141195 MY |
1310 | int offset; |
1311 | uint32_t phandle = 0; | |
b4b847e9 KG |
1312 | |
1313 | for (offset = fdt_next_node(blob, -1, NULL); offset >= 0; | |
1314 | offset = fdt_next_node(blob, offset, NULL)) { | |
50bf17bd | 1315 | phandle = max(phandle, fdt_get_phandle(blob, offset)); |
b4b847e9 | 1316 | } |
75e73afd | 1317 | |
b4b847e9 KG |
1318 | return phandle + 1; |
1319 | } | |
beca5a5f | 1320 | |
a8d2a75d | 1321 | /* |
f117c0f0 | 1322 | * fdt_set_phandle: Create a phandle property for the given node |
a8d2a75d GVB |
1323 | * |
1324 | * @fdt: ptr to device tree | |
1325 | * @nodeoffset: node to update | |
1326 | * @phandle: phandle value to set (must be unique) | |
f117c0f0 KG |
1327 | */ |
1328 | int fdt_set_phandle(void *fdt, int nodeoffset, uint32_t phandle) | |
a8d2a75d GVB |
1329 | { |
1330 | int ret; | |
1331 | ||
1332 | #ifdef DEBUG | |
1333 | int off = fdt_node_offset_by_phandle(fdt, phandle); | |
1334 | ||
1335 | if ((off >= 0) && (off != nodeoffset)) { | |
1336 | char buf[64]; | |
1337 | ||
1338 | fdt_get_path(fdt, nodeoffset, buf, sizeof(buf)); | |
1339 | printf("Trying to update node %s with phandle %u ", | |
1340 | buf, phandle); | |
1341 | ||
1342 | fdt_get_path(fdt, off, buf, sizeof(buf)); | |
1343 | printf("that already exists in node %s.\n", buf); | |
1344 | return -FDT_ERR_BADPHANDLE; | |
1345 | } | |
1346 | #endif | |
1347 | ||
1348 | ret = fdt_setprop_cell(fdt, nodeoffset, "phandle", phandle); | |
1349 | if (ret < 0) | |
1350 | return ret; | |
1351 | ||
1352 | /* | |
1353 | * For now, also set the deprecated "linux,phandle" property, so that we | |
1354 | * don't break older kernels. | |
1355 | */ | |
1356 | ret = fdt_setprop_cell(fdt, nodeoffset, "linux,phandle", phandle); | |
1357 | ||
1358 | return ret; | |
1359 | } | |
1360 | ||
10aeabd1 KG |
1361 | /* |
1362 | * fdt_create_phandle: Create a phandle property for the given node | |
1363 | * | |
1364 | * @fdt: ptr to device tree | |
1365 | * @nodeoffset: node to update | |
1366 | */ | |
3c927ccc | 1367 | unsigned int fdt_create_phandle(void *fdt, int nodeoffset) |
10aeabd1 KG |
1368 | { |
1369 | /* see if there is a phandle already */ | |
1370 | int phandle = fdt_get_phandle(fdt, nodeoffset); | |
1371 | ||
1372 | /* if we got 0, means no phandle so create one */ | |
1373 | if (phandle == 0) { | |
3c927ccc TT |
1374 | int ret; |
1375 | ||
10aeabd1 | 1376 | phandle = fdt_alloc_phandle(fdt); |
3c927ccc TT |
1377 | ret = fdt_set_phandle(fdt, nodeoffset, phandle); |
1378 | if (ret < 0) { | |
1379 | printf("Can't set phandle %u: %s\n", phandle, | |
1380 | fdt_strerror(ret)); | |
1381 | return 0; | |
1382 | } | |
10aeabd1 KG |
1383 | } |
1384 | ||
1385 | return phandle; | |
1386 | } | |
1387 | ||
2a523f52 SL |
1388 | /* |
1389 | * fdt_set_node_status: Set status for the given node | |
1390 | * | |
1391 | * @fdt: ptr to device tree | |
1392 | * @nodeoffset: node to update | |
1393 | * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED, | |
1394 | * FDT_STATUS_FAIL, FDT_STATUS_FAIL_ERROR_CODE | |
1395 | * @error_code: optional, only used if status is FDT_STATUS_FAIL_ERROR_CODE | |
1396 | */ | |
1397 | int fdt_set_node_status(void *fdt, int nodeoffset, | |
1398 | enum fdt_status status, unsigned int error_code) | |
1399 | { | |
1400 | char buf[16]; | |
1401 | int ret = 0; | |
1402 | ||
1403 | if (nodeoffset < 0) | |
1404 | return nodeoffset; | |
1405 | ||
1406 | switch (status) { | |
1407 | case FDT_STATUS_OKAY: | |
1408 | ret = fdt_setprop_string(fdt, nodeoffset, "status", "okay"); | |
1409 | break; | |
1410 | case FDT_STATUS_DISABLED: | |
1411 | ret = fdt_setprop_string(fdt, nodeoffset, "status", "disabled"); | |
1412 | break; | |
1413 | case FDT_STATUS_FAIL: | |
1414 | ret = fdt_setprop_string(fdt, nodeoffset, "status", "fail"); | |
1415 | break; | |
1416 | case FDT_STATUS_FAIL_ERROR_CODE: | |
1417 | sprintf(buf, "fail-%d", error_code); | |
1418 | ret = fdt_setprop_string(fdt, nodeoffset, "status", buf); | |
1419 | break; | |
1420 | default: | |
1421 | printf("Invalid fdt status: %x\n", status); | |
1422 | ret = -1; | |
1423 | break; | |
1424 | } | |
1425 | ||
1426 | return ret; | |
1427 | } | |
1428 | ||
1429 | /* | |
1430 | * fdt_set_status_by_alias: Set status for the given node given an alias | |
1431 | * | |
1432 | * @fdt: ptr to device tree | |
1433 | * @alias: alias of node to update | |
1434 | * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED, | |
1435 | * FDT_STATUS_FAIL, FDT_STATUS_FAIL_ERROR_CODE | |
1436 | * @error_code: optional, only used if status is FDT_STATUS_FAIL_ERROR_CODE | |
1437 | */ | |
1438 | int fdt_set_status_by_alias(void *fdt, const char* alias, | |
1439 | enum fdt_status status, unsigned int error_code) | |
1440 | { | |
1441 | int offset = fdt_path_offset(fdt, alias); | |
1442 | ||
1443 | return fdt_set_node_status(fdt, offset, status, error_code); | |
1444 | } | |
1445 | ||
096eb3f5 | 1446 | #if defined(CONFIG_VIDEO) || defined(CONFIG_LCD) |
beca5a5f AG |
1447 | int fdt_add_edid(void *blob, const char *compat, unsigned char *edid_buf) |
1448 | { | |
1449 | int noff; | |
1450 | int ret; | |
1451 | ||
1452 | noff = fdt_node_offset_by_compatible(blob, -1, compat); | |
1453 | if (noff != -FDT_ERR_NOTFOUND) { | |
1454 | debug("%s: %s\n", fdt_get_name(blob, noff, 0), compat); | |
1455 | add_edid: | |
1456 | ret = fdt_setprop(blob, noff, "edid", edid_buf, 128); | |
1457 | if (ret == -FDT_ERR_NOSPACE) { | |
1458 | ret = fdt_increase_size(blob, 512); | |
1459 | if (!ret) | |
1460 | goto add_edid; | |
1461 | else | |
1462 | goto err_size; | |
1463 | } else if (ret < 0) { | |
1464 | printf("Can't add property: %s\n", fdt_strerror(ret)); | |
1465 | return ret; | |
1466 | } | |
1467 | } | |
1468 | return 0; | |
1469 | err_size: | |
1470 | printf("Can't increase blob size: %s\n", fdt_strerror(ret)); | |
1471 | return ret; | |
1472 | } | |
1473 | #endif | |
bb682001 TT |
1474 | |
1475 | /* | |
1476 | * Verify the physical address of device tree node for a given alias | |
1477 | * | |
1478 | * This function locates the device tree node of a given alias, and then | |
1479 | * verifies that the physical address of that device matches the given | |
1480 | * parameter. It displays a message if there is a mismatch. | |
1481 | * | |
1482 | * Returns 1 on success, 0 on failure | |
1483 | */ | |
1484 | int fdt_verify_alias_address(void *fdt, int anode, const char *alias, u64 addr) | |
1485 | { | |
1486 | const char *path; | |
8aa5ec6e | 1487 | const fdt32_t *reg; |
bb682001 TT |
1488 | int node, len; |
1489 | u64 dt_addr; | |
1490 | ||
1491 | path = fdt_getprop(fdt, anode, alias, NULL); | |
1492 | if (!path) { | |
1493 | /* If there's no such alias, then it's not a failure */ | |
1494 | return 1; | |
1495 | } | |
1496 | ||
1497 | node = fdt_path_offset(fdt, path); | |
1498 | if (node < 0) { | |
1499 | printf("Warning: device tree alias '%s' points to invalid " | |
1500 | "node %s.\n", alias, path); | |
1501 | return 0; | |
1502 | } | |
1503 | ||
1504 | reg = fdt_getprop(fdt, node, "reg", &len); | |
1505 | if (!reg) { | |
1506 | printf("Warning: device tree node '%s' has no address.\n", | |
1507 | path); | |
1508 | return 0; | |
1509 | } | |
1510 | ||
1511 | dt_addr = fdt_translate_address(fdt, node, reg); | |
1512 | if (addr != dt_addr) { | |
dee37fc9 MY |
1513 | printf("Warning: U-Boot configured device %s at address %llu,\n" |
1514 | "but the device tree has it address %llx.\n", | |
1515 | alias, addr, dt_addr); | |
bb682001 TT |
1516 | return 0; |
1517 | } | |
1518 | ||
1519 | return 1; | |
1520 | } | |
1521 | ||
1522 | /* | |
1523 | * Returns the base address of an SOC or PCI node | |
1524 | */ | |
ec002119 | 1525 | u64 fdt_get_base_address(const void *fdt, int node) |
bb682001 TT |
1526 | { |
1527 | int size; | |
8aa5ec6e | 1528 | const fdt32_t *prop; |
bb682001 | 1529 | |
336a4487 | 1530 | prop = fdt_getprop(fdt, node, "reg", &size); |
bb682001 | 1531 | |
336a4487 | 1532 | return prop ? fdt_translate_address(fdt, node, prop) : 0; |
bb682001 | 1533 | } |
c48e6868 AG |
1534 | |
1535 | /* | |
1536 | * Read a property of size <prop_len>. Currently only supports 1 or 2 cells. | |
1537 | */ | |
1538 | static int fdt_read_prop(const fdt32_t *prop, int prop_len, int cell_off, | |
1539 | uint64_t *val, int cells) | |
1540 | { | |
1541 | const fdt32_t *prop32 = &prop[cell_off]; | |
1542 | const fdt64_t *prop64 = (const fdt64_t *)&prop[cell_off]; | |
1543 | ||
1544 | if ((cell_off + cells) > prop_len) | |
1545 | return -FDT_ERR_NOSPACE; | |
1546 | ||
1547 | switch (cells) { | |
1548 | case 1: | |
1549 | *val = fdt32_to_cpu(*prop32); | |
1550 | break; | |
1551 | case 2: | |
1552 | *val = fdt64_to_cpu(*prop64); | |
1553 | break; | |
1554 | default: | |
1555 | return -FDT_ERR_NOSPACE; | |
1556 | } | |
1557 | ||
1558 | return 0; | |
1559 | } | |
1560 | ||
1561 | /** | |
1562 | * fdt_read_range - Read a node's n'th range property | |
1563 | * | |
1564 | * @fdt: ptr to device tree | |
1565 | * @node: offset of node | |
1566 | * @n: range index | |
1567 | * @child_addr: pointer to storage for the "child address" field | |
1568 | * @addr: pointer to storage for the CPU view translated physical start | |
1569 | * @len: pointer to storage for the range length | |
1570 | * | |
1571 | * Convenience function that reads and interprets a specific range out of | |
1572 | * a number of the "ranges" property array. | |
1573 | */ | |
1574 | int fdt_read_range(void *fdt, int node, int n, uint64_t *child_addr, | |
1575 | uint64_t *addr, uint64_t *len) | |
1576 | { | |
1577 | int pnode = fdt_parent_offset(fdt, node); | |
1578 | const fdt32_t *ranges; | |
1579 | int pacells; | |
1580 | int acells; | |
1581 | int scells; | |
1582 | int ranges_len; | |
1583 | int cell = 0; | |
1584 | int r = 0; | |
1585 | ||
1586 | /* | |
1587 | * The "ranges" property is an array of | |
1588 | * { <child address> <parent address> <size in child address space> } | |
1589 | * | |
1590 | * All 3 elements can span a diffent number of cells. Fetch their size. | |
1591 | */ | |
1592 | pacells = fdt_getprop_u32_default_node(fdt, pnode, 0, "#address-cells", 1); | |
1593 | acells = fdt_getprop_u32_default_node(fdt, node, 0, "#address-cells", 1); | |
1594 | scells = fdt_getprop_u32_default_node(fdt, node, 0, "#size-cells", 1); | |
1595 | ||
1596 | /* Now try to get the ranges property */ | |
1597 | ranges = fdt_getprop(fdt, node, "ranges", &ranges_len); | |
1598 | if (!ranges) | |
1599 | return -FDT_ERR_NOTFOUND; | |
1600 | ranges_len /= sizeof(uint32_t); | |
1601 | ||
1602 | /* Jump to the n'th entry */ | |
1603 | cell = n * (pacells + acells + scells); | |
1604 | ||
1605 | /* Read <child address> */ | |
1606 | if (child_addr) { | |
1607 | r = fdt_read_prop(ranges, ranges_len, cell, child_addr, | |
1608 | acells); | |
1609 | if (r) | |
1610 | return r; | |
1611 | } | |
1612 | cell += acells; | |
1613 | ||
1614 | /* Read <parent address> */ | |
1615 | if (addr) | |
1616 | *addr = fdt_translate_address(fdt, node, ranges + cell); | |
1617 | cell += pacells; | |
1618 | ||
1619 | /* Read <size in child address space> */ | |
1620 | if (len) { | |
1621 | r = fdt_read_prop(ranges, ranges_len, cell, len, scells); | |
1622 | if (r) | |
1623 | return r; | |
1624 | } | |
1625 | ||
1626 | return 0; | |
1627 | } | |
d4f495a8 HG |
1628 | |
1629 | /** | |
1630 | * fdt_setup_simplefb_node - Fill and enable a simplefb node | |
1631 | * | |
1632 | * @fdt: ptr to device tree | |
1633 | * @node: offset of the simplefb node | |
1634 | * @base_address: framebuffer base address | |
1635 | * @width: width in pixels | |
1636 | * @height: height in pixels | |
1637 | * @stride: bytes per line | |
1638 | * @format: pixel format string | |
1639 | * | |
1640 | * Convenience function to fill and enable a simplefb node. | |
1641 | */ | |
1642 | int fdt_setup_simplefb_node(void *fdt, int node, u64 base_address, u32 width, | |
1643 | u32 height, u32 stride, const char *format) | |
1644 | { | |
1645 | char name[32]; | |
1646 | fdt32_t cells[4]; | |
1647 | int i, addrc, sizec, ret; | |
1648 | ||
eed36609 SG |
1649 | fdt_support_default_count_cells(fdt, fdt_parent_offset(fdt, node), |
1650 | &addrc, &sizec); | |
d4f495a8 HG |
1651 | i = 0; |
1652 | if (addrc == 2) | |
1653 | cells[i++] = cpu_to_fdt32(base_address >> 32); | |
1654 | cells[i++] = cpu_to_fdt32(base_address); | |
1655 | if (sizec == 2) | |
1656 | cells[i++] = 0; | |
1657 | cells[i++] = cpu_to_fdt32(height * stride); | |
1658 | ||
1659 | ret = fdt_setprop(fdt, node, "reg", cells, sizeof(cells[0]) * i); | |
1660 | if (ret < 0) | |
1661 | return ret; | |
1662 | ||
dee37fc9 | 1663 | snprintf(name, sizeof(name), "framebuffer@%llx", base_address); |
d4f495a8 HG |
1664 | ret = fdt_set_name(fdt, node, name); |
1665 | if (ret < 0) | |
1666 | return ret; | |
1667 | ||
1668 | ret = fdt_setprop_u32(fdt, node, "width", width); | |
1669 | if (ret < 0) | |
1670 | return ret; | |
1671 | ||
1672 | ret = fdt_setprop_u32(fdt, node, "height", height); | |
1673 | if (ret < 0) | |
1674 | return ret; | |
1675 | ||
1676 | ret = fdt_setprop_u32(fdt, node, "stride", stride); | |
1677 | if (ret < 0) | |
1678 | return ret; | |
1679 | ||
1680 | ret = fdt_setprop_string(fdt, node, "format", format); | |
1681 | if (ret < 0) | |
1682 | return ret; | |
1683 | ||
1684 | ret = fdt_setprop_string(fdt, node, "status", "okay"); | |
1685 | if (ret < 0) | |
1686 | return ret; | |
1687 | ||
1688 | return 0; | |
1689 | } | |
08daa258 TH |
1690 | |
1691 | /* | |
1692 | * Update native-mode in display-timings from display environment variable. | |
1693 | * The node to update are specified by path. | |
1694 | */ | |
1695 | int fdt_fixup_display(void *blob, const char *path, const char *display) | |
1696 | { | |
1697 | int off, toff; | |
1698 | ||
1699 | if (!display || !path) | |
1700 | return -FDT_ERR_NOTFOUND; | |
1701 | ||
1702 | toff = fdt_path_offset(blob, path); | |
1703 | if (toff >= 0) | |
1704 | toff = fdt_subnode_offset(blob, toff, "display-timings"); | |
1705 | if (toff < 0) | |
1706 | return toff; | |
1707 | ||
1708 | for (off = fdt_first_subnode(blob, toff); | |
1709 | off >= 0; | |
1710 | off = fdt_next_subnode(blob, off)) { | |
1711 | uint32_t h = fdt_get_phandle(blob, off); | |
1712 | debug("%s:0x%x\n", fdt_get_name(blob, off, NULL), | |
1713 | fdt32_to_cpu(h)); | |
1714 | if (strcasecmp(fdt_get_name(blob, off, NULL), display) == 0) | |
1715 | return fdt_setprop_u32(blob, toff, "native-mode", h); | |
1716 | } | |
1717 | return toff; | |
1718 | } | |
fc7c3189 PA |
1719 | |
1720 | #ifdef CONFIG_OF_LIBFDT_OVERLAY | |
1721 | /** | |
1722 | * fdt_overlay_apply_verbose - Apply an overlay with verbose error reporting | |
1723 | * | |
1724 | * @fdt: ptr to device tree | |
1725 | * @fdto: ptr to device tree overlay | |
1726 | * | |
1727 | * Convenience function to apply an overlay and display helpful messages | |
1728 | * in the case of an error | |
1729 | */ | |
1730 | int fdt_overlay_apply_verbose(void *fdt, void *fdto) | |
1731 | { | |
1732 | int err; | |
1733 | bool has_symbols; | |
1734 | ||
1735 | err = fdt_path_offset(fdt, "/__symbols__"); | |
1736 | has_symbols = err >= 0; | |
1737 | ||
1738 | err = fdt_overlay_apply(fdt, fdto); | |
1739 | if (err < 0) { | |
1740 | printf("failed on fdt_overlay_apply(): %s\n", | |
1741 | fdt_strerror(err)); | |
1742 | if (!has_symbols) { | |
1743 | printf("base fdt does did not have a /__symbols__ node\n"); | |
1744 | printf("make sure you've compiled with -@\n"); | |
1745 | } | |
1746 | } | |
1747 | return err; | |
1748 | } | |
1749 | #endif |