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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; | |
59bd7968 | 600 | int fdt_memrsv = 0; |
3082d234 KG |
601 | |
602 | if (!blob) | |
603 | return 0; | |
604 | ||
605 | total = fdt_num_mem_rsv(blob); | |
606 | for (i = 0; i < total; i++) { | |
607 | fdt_get_mem_rsv(blob, i, &addr, &size); | |
92549358 | 608 | if (addr == (uintptr_t)blob) { |
3082d234 | 609 | fdt_del_mem_rsv(blob, i); |
59bd7968 | 610 | fdt_memrsv = 1; |
3082d234 KG |
611 | break; |
612 | } | |
613 | } | |
614 | ||
f242a088 PK |
615 | /* |
616 | * Calculate the actual size of the fdt | |
3840ebfa FW |
617 | * plus the size needed for 5 fdt_add_mem_rsv, one |
618 | * for the fdt itself and 4 for a possible initrd | |
619 | * ((initrd-start + initrd-end) * 2 (name & value)) | |
f242a088 | 620 | */ |
3082d234 | 621 | actualsize = fdt_off_dt_strings(blob) + |
3840ebfa | 622 | fdt_size_dt_strings(blob) + 5 * sizeof(struct fdt_reserve_entry); |
3082d234 | 623 | |
ef476836 | 624 | actualsize += extrasize; |
3082d234 | 625 | /* Make it so the fdt ends on a page boundary */ |
92549358 SG |
626 | actualsize = ALIGN(actualsize + ((uintptr_t)blob & 0xfff), 0x1000); |
627 | actualsize = actualsize - ((uintptr_t)blob & 0xfff); | |
3082d234 KG |
628 | |
629 | /* Change the fdt header to reflect the correct size */ | |
630 | fdt_set_totalsize(blob, actualsize); | |
631 | ||
59bd7968 SG |
632 | if (fdt_memrsv) { |
633 | /* Add the new reservation */ | |
634 | ret = fdt_add_mem_rsv(blob, map_to_sysmem(blob), actualsize); | |
635 | if (ret < 0) | |
636 | return ret; | |
637 | } | |
3082d234 KG |
638 | |
639 | return actualsize; | |
640 | } | |
8ab451c4 KG |
641 | |
642 | #ifdef CONFIG_PCI | |
cfd700be | 643 | #define CONFIG_SYS_PCI_NR_INBOUND_WIN 4 |
8ab451c4 KG |
644 | |
645 | #define FDT_PCI_PREFETCH (0x40000000) | |
646 | #define FDT_PCI_MEM32 (0x02000000) | |
647 | #define FDT_PCI_IO (0x01000000) | |
648 | #define FDT_PCI_MEM64 (0x03000000) | |
649 | ||
650 | int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose) { | |
651 | ||
652 | int addrcell, sizecell, len, r; | |
653 | u32 *dma_range; | |
654 | /* sized based on pci addr cells, size-cells, & address-cells */ | |
655 | u32 dma_ranges[(3 + 2 + 2) * CONFIG_SYS_PCI_NR_INBOUND_WIN]; | |
656 | ||
657 | addrcell = fdt_getprop_u32_default(blob, "/", "#address-cells", 1); | |
658 | sizecell = fdt_getprop_u32_default(blob, "/", "#size-cells", 1); | |
659 | ||
660 | dma_range = &dma_ranges[0]; | |
661 | for (r = 0; r < hose->region_count; r++) { | |
662 | u64 bus_start, phys_start, size; | |
663 | ||
ff4e66e9 KG |
664 | /* skip if !PCI_REGION_SYS_MEMORY */ |
665 | if (!(hose->regions[r].flags & PCI_REGION_SYS_MEMORY)) | |
8ab451c4 KG |
666 | continue; |
667 | ||
668 | bus_start = (u64)hose->regions[r].bus_start; | |
669 | phys_start = (u64)hose->regions[r].phys_start; | |
670 | size = (u64)hose->regions[r].size; | |
671 | ||
672 | dma_range[0] = 0; | |
cfd700be | 673 | if (size >= 0x100000000ull) |
8ab451c4 KG |
674 | dma_range[0] |= FDT_PCI_MEM64; |
675 | else | |
676 | dma_range[0] |= FDT_PCI_MEM32; | |
677 | if (hose->regions[r].flags & PCI_REGION_PREFETCH) | |
678 | dma_range[0] |= FDT_PCI_PREFETCH; | |
679 | #ifdef CONFIG_SYS_PCI_64BIT | |
680 | dma_range[1] = bus_start >> 32; | |
681 | #else | |
682 | dma_range[1] = 0; | |
683 | #endif | |
684 | dma_range[2] = bus_start & 0xffffffff; | |
685 | ||
686 | if (addrcell == 2) { | |
687 | dma_range[3] = phys_start >> 32; | |
688 | dma_range[4] = phys_start & 0xffffffff; | |
689 | } else { | |
690 | dma_range[3] = phys_start & 0xffffffff; | |
691 | } | |
692 | ||
693 | if (sizecell == 2) { | |
694 | dma_range[3 + addrcell + 0] = size >> 32; | |
695 | dma_range[3 + addrcell + 1] = size & 0xffffffff; | |
696 | } else { | |
697 | dma_range[3 + addrcell + 0] = size & 0xffffffff; | |
698 | } | |
699 | ||
700 | dma_range += (3 + addrcell + sizecell); | |
701 | } | |
702 | ||
703 | len = dma_range - &dma_ranges[0]; | |
704 | if (len) | |
705 | fdt_setprop(blob, phb_off, "dma-ranges", &dma_ranges[0], len*4); | |
706 | ||
707 | return 0; | |
708 | } | |
709 | #endif | |
30d45c0d | 710 | |
cb2707af MM |
711 | int fdt_increase_size(void *fdt, int add_len) |
712 | { | |
713 | int newlen; | |
714 | ||
715 | newlen = fdt_totalsize(fdt) + add_len; | |
716 | ||
717 | /* Open in place with a new len */ | |
718 | return fdt_open_into(fdt, fdt, newlen); | |
719 | } | |
720 | ||
3c950e2e AG |
721 | #ifdef CONFIG_FDT_FIXUP_PARTITIONS |
722 | #include <jffs2/load_kernel.h> | |
723 | #include <mtd_node.h> | |
724 | ||
cd1457d7 | 725 | static int fdt_del_subnodes(const void *blob, int parent_offset) |
3c950e2e AG |
726 | { |
727 | int off, ndepth; | |
728 | int ret; | |
729 | ||
730 | for (ndepth = 0, off = fdt_next_node(blob, parent_offset, &ndepth); | |
731 | (off >= 0) && (ndepth > 0); | |
732 | off = fdt_next_node(blob, off, &ndepth)) { | |
733 | if (ndepth == 1) { | |
734 | debug("delete %s: offset: %x\n", | |
735 | fdt_get_name(blob, off, 0), off); | |
736 | ret = fdt_del_node((void *)blob, off); | |
737 | if (ret < 0) { | |
738 | printf("Can't delete node: %s\n", | |
739 | fdt_strerror(ret)); | |
740 | return ret; | |
741 | } else { | |
742 | ndepth = 0; | |
743 | off = parent_offset; | |
744 | } | |
745 | } | |
746 | } | |
747 | return 0; | |
748 | } | |
749 | ||
cd1457d7 | 750 | static int fdt_del_partitions(void *blob, int parent_offset) |
3c950e2e AG |
751 | { |
752 | const void *prop; | |
753 | int ndepth = 0; | |
754 | int off; | |
755 | int ret; | |
756 | ||
757 | off = fdt_next_node(blob, parent_offset, &ndepth); | |
758 | if (off > 0 && ndepth == 1) { | |
759 | prop = fdt_getprop(blob, off, "label", NULL); | |
760 | if (prop == NULL) { | |
761 | /* | |
762 | * Could not find label property, nand {}; node? | |
763 | * Check subnode, delete partitions there if any. | |
764 | */ | |
765 | return fdt_del_partitions(blob, off); | |
766 | } else { | |
767 | ret = fdt_del_subnodes(blob, parent_offset); | |
768 | if (ret < 0) { | |
769 | printf("Can't remove subnodes: %s\n", | |
770 | fdt_strerror(ret)); | |
771 | return ret; | |
772 | } | |
773 | } | |
774 | } | |
775 | return 0; | |
776 | } | |
777 | ||
778 | int fdt_node_set_part_info(void *blob, int parent_offset, | |
779 | struct mtd_device *dev) | |
780 | { | |
781 | struct list_head *pentry; | |
782 | struct part_info *part; | |
3c950e2e AG |
783 | int off, ndepth = 0; |
784 | int part_num, ret; | |
3a9a62a1 | 785 | int sizecell; |
3c950e2e AG |
786 | char buf[64]; |
787 | ||
788 | ret = fdt_del_partitions(blob, parent_offset); | |
789 | if (ret < 0) | |
790 | return ret; | |
791 | ||
3a9a62a1 SM |
792 | /* |
793 | * Check if size/address is 1 or 2 cells. | |
794 | * We assume #address-cells and #size-cells have same value. | |
795 | */ | |
796 | sizecell = fdt_getprop_u32_default_node(blob, parent_offset, | |
797 | 0, "#size-cells", 1); | |
798 | ||
3c950e2e AG |
799 | /* |
800 | * Check if it is nand {}; subnode, adjust | |
801 | * the offset in this case | |
802 | */ | |
803 | off = fdt_next_node(blob, parent_offset, &ndepth); | |
804 | if (off > 0 && ndepth == 1) | |
805 | parent_offset = off; | |
806 | ||
807 | part_num = 0; | |
808 | list_for_each_prev(pentry, &dev->parts) { | |
809 | int newoff; | |
810 | ||
811 | part = list_entry(pentry, struct part_info, link); | |
812 | ||
06503f16 | 813 | debug("%2d: %-20s0x%08llx\t0x%08llx\t%d\n", |
3c950e2e AG |
814 | part_num, part->name, part->size, |
815 | part->offset, part->mask_flags); | |
816 | ||
06503f16 | 817 | sprintf(buf, "partition@%llx", part->offset); |
3c950e2e AG |
818 | add_sub: |
819 | ret = fdt_add_subnode(blob, parent_offset, buf); | |
820 | if (ret == -FDT_ERR_NOSPACE) { | |
821 | ret = fdt_increase_size(blob, 512); | |
822 | if (!ret) | |
823 | goto add_sub; | |
824 | else | |
825 | goto err_size; | |
826 | } else if (ret < 0) { | |
827 | printf("Can't add partition node: %s\n", | |
828 | fdt_strerror(ret)); | |
829 | return ret; | |
830 | } | |
831 | newoff = ret; | |
832 | ||
833 | /* Check MTD_WRITEABLE_CMD flag */ | |
834 | if (part->mask_flags & 1) { | |
835 | add_ro: | |
836 | ret = fdt_setprop(blob, newoff, "read_only", NULL, 0); | |
837 | if (ret == -FDT_ERR_NOSPACE) { | |
838 | ret = fdt_increase_size(blob, 512); | |
839 | if (!ret) | |
840 | goto add_ro; | |
841 | else | |
842 | goto err_size; | |
843 | } else if (ret < 0) | |
844 | goto err_prop; | |
845 | } | |
846 | ||
3c950e2e | 847 | add_reg: |
3a9a62a1 SM |
848 | if (sizecell == 2) { |
849 | ret = fdt_setprop_u64(blob, newoff, | |
850 | "reg", part->offset); | |
851 | if (!ret) | |
852 | ret = fdt_appendprop_u64(blob, newoff, | |
853 | "reg", part->size); | |
854 | } else { | |
855 | ret = fdt_setprop_u32(blob, newoff, | |
856 | "reg", part->offset); | |
857 | if (!ret) | |
858 | ret = fdt_appendprop_u32(blob, newoff, | |
859 | "reg", part->size); | |
860 | } | |
861 | ||
3c950e2e AG |
862 | if (ret == -FDT_ERR_NOSPACE) { |
863 | ret = fdt_increase_size(blob, 512); | |
864 | if (!ret) | |
865 | goto add_reg; | |
866 | else | |
867 | goto err_size; | |
868 | } else if (ret < 0) | |
869 | goto err_prop; | |
870 | ||
871 | add_label: | |
872 | ret = fdt_setprop_string(blob, newoff, "label", part->name); | |
873 | if (ret == -FDT_ERR_NOSPACE) { | |
874 | ret = fdt_increase_size(blob, 512); | |
875 | if (!ret) | |
876 | goto add_label; | |
877 | else | |
878 | goto err_size; | |
879 | } else if (ret < 0) | |
880 | goto err_prop; | |
881 | ||
882 | part_num++; | |
883 | } | |
884 | return 0; | |
885 | err_size: | |
886 | printf("Can't increase blob size: %s\n", fdt_strerror(ret)); | |
887 | return ret; | |
888 | err_prop: | |
889 | printf("Can't add property: %s\n", fdt_strerror(ret)); | |
890 | return ret; | |
891 | } | |
892 | ||
893 | /* | |
894 | * Update partitions in nor/nand nodes using info from | |
895 | * mtdparts environment variable. The nodes to update are | |
896 | * specified by node_info structure which contains mtd device | |
897 | * type and compatible string: E. g. the board code in | |
898 | * ft_board_setup() could use: | |
899 | * | |
900 | * struct node_info nodes[] = { | |
901 | * { "fsl,mpc5121-nfc", MTD_DEV_TYPE_NAND, }, | |
902 | * { "cfi-flash", MTD_DEV_TYPE_NOR, }, | |
903 | * }; | |
904 | * | |
905 | * fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes)); | |
906 | */ | |
5f4e32d0 MY |
907 | void fdt_fixup_mtdparts(void *blob, const struct node_info *node_info, |
908 | int node_info_size) | |
3c950e2e | 909 | { |
3c950e2e | 910 | struct mtd_device *dev; |
3c950e2e AG |
911 | int i, idx; |
912 | int noff; | |
913 | ||
3c950e2e AG |
914 | if (mtdparts_init() != 0) |
915 | return; | |
916 | ||
917 | for (i = 0; i < node_info_size; i++) { | |
918 | idx = 0; | |
5f4e32d0 MY |
919 | noff = fdt_node_offset_by_compatible(blob, -1, |
920 | node_info[i].compat); | |
3c950e2e AG |
921 | while (noff != -FDT_ERR_NOTFOUND) { |
922 | debug("%s: %s, mtd dev type %d\n", | |
923 | fdt_get_name(blob, noff, 0), | |
5f4e32d0 MY |
924 | node_info[i].compat, node_info[i].type); |
925 | dev = device_find(node_info[i].type, idx++); | |
3c950e2e AG |
926 | if (dev) { |
927 | if (fdt_node_set_part_info(blob, noff, dev)) | |
928 | return; /* return on error */ | |
929 | } | |
930 | ||
931 | /* Jump to next flash node */ | |
932 | noff = fdt_node_offset_by_compatible(blob, noff, | |
5f4e32d0 | 933 | node_info[i].compat); |
3c950e2e AG |
934 | } |
935 | } | |
936 | } | |
937 | #endif | |
49b97d9c KG |
938 | |
939 | void fdt_del_node_and_alias(void *blob, const char *alias) | |
940 | { | |
941 | int off = fdt_path_offset(blob, alias); | |
942 | ||
943 | if (off < 0) | |
944 | return; | |
945 | ||
946 | fdt_del_node(blob, off); | |
947 | ||
948 | off = fdt_path_offset(blob, "/aliases"); | |
949 | fdt_delprop(blob, off, alias); | |
950 | } | |
a0342c08 | 951 | |
a0342c08 KG |
952 | /* Max address size we deal with */ |
953 | #define OF_MAX_ADDR_CELLS 4 | |
a0ae380b | 954 | #define OF_BAD_ADDR FDT_ADDR_T_NONE |
4428f3c8 PM |
955 | #define OF_CHECK_COUNTS(na, ns) ((na) > 0 && (na) <= OF_MAX_ADDR_CELLS && \ |
956 | (ns) > 0) | |
a0342c08 KG |
957 | |
958 | /* Debug utility */ | |
959 | #ifdef DEBUG | |
8aa5ec6e | 960 | static void of_dump_addr(const char *s, const fdt32_t *addr, int na) |
a0342c08 KG |
961 | { |
962 | printf("%s", s); | |
963 | while(na--) | |
964 | printf(" %08x", *(addr++)); | |
965 | printf("\n"); | |
966 | } | |
967 | #else | |
8aa5ec6e | 968 | static void of_dump_addr(const char *s, const fdt32_t *addr, int na) { } |
a0342c08 KG |
969 | #endif |
970 | ||
0a222d53 PB |
971 | /** |
972 | * struct of_bus - Callbacks for bus specific translators | |
49717b18 PB |
973 | * @name: A string used to identify this bus in debug output. |
974 | * @addresses: The name of the DT property from which addresses are | |
975 | * to be read, typically "reg". | |
0a222d53 PB |
976 | * @match: Return non-zero if the node whose parent is at |
977 | * parentoffset in the FDT blob corresponds to a bus | |
978 | * of this type, otherwise return zero. If NULL a match | |
979 | * is assumed. | |
49717b18 PB |
980 | * @count_cells:Count how many cells (be32 values) a node whose parent |
981 | * is at parentoffset in the FDT blob will require to | |
982 | * represent its address (written to *addrc) & size | |
983 | * (written to *sizec). | |
984 | * @map: Map the address addr from the address space of this | |
985 | * bus to that of its parent, making use of the ranges | |
986 | * read from DT to an array at range. na and ns are the | |
987 | * number of cells (be32 values) used to hold and address | |
988 | * or size, respectively, for this bus. pna is the number | |
989 | * of cells used to hold an address for the parent bus. | |
990 | * Returns the address in the address space of the parent | |
991 | * bus. | |
992 | * @translate: Update the value of the address cells at addr within an | |
993 | * FDT by adding offset to it. na specifies the number of | |
994 | * cells used to hold the address being translated. Returns | |
995 | * zero on success, non-zero on error. | |
0a222d53 PB |
996 | * |
997 | * Each bus type will include a struct of_bus in the of_busses array, | |
998 | * providing implementations of some or all of the functions used to | |
999 | * match the bus & handle address translation for its children. | |
1000 | */ | |
a0342c08 KG |
1001 | struct of_bus { |
1002 | const char *name; | |
1003 | const char *addresses; | |
11e44fc6 SW |
1004 | int (*match)(const void *blob, int parentoffset); |
1005 | void (*count_cells)(const void *blob, int parentoffset, | |
a0342c08 | 1006 | int *addrc, int *sizec); |
8aa5ec6e | 1007 | u64 (*map)(fdt32_t *addr, const fdt32_t *range, |
a0342c08 | 1008 | int na, int ns, int pna); |
8aa5ec6e | 1009 | int (*translate)(fdt32_t *addr, u64 offset, int na); |
a0342c08 KG |
1010 | }; |
1011 | ||
1012 | /* Default translator (generic bus) */ | |
eed36609 | 1013 | void fdt_support_default_count_cells(const void *blob, int parentoffset, |
a0342c08 KG |
1014 | int *addrc, int *sizec) |
1015 | { | |
8aa5ec6e | 1016 | const fdt32_t *prop; |
6395f318 | 1017 | |
933cdbb4 SG |
1018 | if (addrc) |
1019 | *addrc = fdt_address_cells(blob, parentoffset); | |
6395f318 SW |
1020 | |
1021 | if (sizec) { | |
1022 | prop = fdt_getprop(blob, parentoffset, "#size-cells", NULL); | |
1023 | if (prop) | |
8aa5ec6e | 1024 | *sizec = be32_to_cpup(prop); |
6395f318 SW |
1025 | else |
1026 | *sizec = 1; | |
1027 | } | |
a0342c08 KG |
1028 | } |
1029 | ||
8aa5ec6e | 1030 | static u64 of_bus_default_map(fdt32_t *addr, const fdt32_t *range, |
a0342c08 KG |
1031 | int na, int ns, int pna) |
1032 | { | |
1033 | u64 cp, s, da; | |
1034 | ||
eed36609 SG |
1035 | cp = fdt_read_number(range, na); |
1036 | s = fdt_read_number(range + na + pna, ns); | |
1037 | da = fdt_read_number(addr, na); | |
a0342c08 | 1038 | |
d8e9cf4d | 1039 | debug("OF: default map, cp=%llx, s=%llx, da=%llx\n", cp, s, da); |
a0342c08 KG |
1040 | |
1041 | if (da < cp || da >= (cp + s)) | |
1042 | return OF_BAD_ADDR; | |
1043 | return da - cp; | |
1044 | } | |
1045 | ||
8aa5ec6e | 1046 | static int of_bus_default_translate(fdt32_t *addr, u64 offset, int na) |
a0342c08 | 1047 | { |
eed36609 | 1048 | u64 a = fdt_read_number(addr, na); |
a0342c08 KG |
1049 | memset(addr, 0, na * 4); |
1050 | a += offset; | |
1051 | if (na > 1) | |
8aa5ec6e KP |
1052 | addr[na - 2] = cpu_to_fdt32(a >> 32); |
1053 | addr[na - 1] = cpu_to_fdt32(a & 0xffffffffu); | |
a0342c08 KG |
1054 | |
1055 | return 0; | |
1056 | } | |
1057 | ||
0a222d53 PB |
1058 | #ifdef CONFIG_OF_ISA_BUS |
1059 | ||
1060 | /* ISA bus translator */ | |
11e44fc6 | 1061 | static int of_bus_isa_match(const void *blob, int parentoffset) |
0a222d53 PB |
1062 | { |
1063 | const char *name; | |
1064 | ||
1065 | name = fdt_get_name(blob, parentoffset, NULL); | |
1066 | if (!name) | |
1067 | return 0; | |
1068 | ||
1069 | return !strcmp(name, "isa"); | |
1070 | } | |
1071 | ||
11e44fc6 | 1072 | static void of_bus_isa_count_cells(const void *blob, int parentoffset, |
0a222d53 PB |
1073 | int *addrc, int *sizec) |
1074 | { | |
1075 | if (addrc) | |
1076 | *addrc = 2; | |
1077 | if (sizec) | |
1078 | *sizec = 1; | |
1079 | } | |
1080 | ||
1081 | static u64 of_bus_isa_map(fdt32_t *addr, const fdt32_t *range, | |
1082 | int na, int ns, int pna) | |
1083 | { | |
1084 | u64 cp, s, da; | |
1085 | ||
1086 | /* Check address type match */ | |
1087 | if ((addr[0] ^ range[0]) & cpu_to_be32(1)) | |
1088 | return OF_BAD_ADDR; | |
1089 | ||
eed36609 SG |
1090 | cp = fdt_read_number(range + 1, na - 1); |
1091 | s = fdt_read_number(range + na + pna, ns); | |
1092 | da = fdt_read_number(addr + 1, na - 1); | |
0a222d53 | 1093 | |
d8e9cf4d | 1094 | debug("OF: ISA map, cp=%llx, s=%llx, da=%llx\n", cp, s, da); |
0a222d53 PB |
1095 | |
1096 | if (da < cp || da >= (cp + s)) | |
1097 | return OF_BAD_ADDR; | |
1098 | return da - cp; | |
1099 | } | |
1100 | ||
1101 | static int of_bus_isa_translate(fdt32_t *addr, u64 offset, int na) | |
1102 | { | |
1103 | return of_bus_default_translate(addr + 1, offset, na - 1); | |
1104 | } | |
1105 | ||
1106 | #endif /* CONFIG_OF_ISA_BUS */ | |
1107 | ||
a0342c08 KG |
1108 | /* Array of bus specific translators */ |
1109 | static struct of_bus of_busses[] = { | |
0a222d53 PB |
1110 | #ifdef CONFIG_OF_ISA_BUS |
1111 | /* ISA */ | |
1112 | { | |
1113 | .name = "isa", | |
1114 | .addresses = "reg", | |
1115 | .match = of_bus_isa_match, | |
1116 | .count_cells = of_bus_isa_count_cells, | |
1117 | .map = of_bus_isa_map, | |
1118 | .translate = of_bus_isa_translate, | |
1119 | }, | |
1120 | #endif /* CONFIG_OF_ISA_BUS */ | |
a0342c08 KG |
1121 | /* Default */ |
1122 | { | |
1123 | .name = "default", | |
1124 | .addresses = "reg", | |
eed36609 | 1125 | .count_cells = fdt_support_default_count_cells, |
a0342c08 KG |
1126 | .map = of_bus_default_map, |
1127 | .translate = of_bus_default_translate, | |
1128 | }, | |
1129 | }; | |
1130 | ||
11e44fc6 | 1131 | static struct of_bus *of_match_bus(const void *blob, int parentoffset) |
0a222d53 PB |
1132 | { |
1133 | struct of_bus *bus; | |
1134 | ||
1135 | if (ARRAY_SIZE(of_busses) == 1) | |
1136 | return of_busses; | |
1137 | ||
1138 | for (bus = of_busses; bus; bus++) { | |
1139 | if (!bus->match || bus->match(blob, parentoffset)) | |
1140 | return bus; | |
1141 | } | |
1142 | ||
1143 | /* | |
1144 | * We should always have matched the default bus at least, since | |
1145 | * it has a NULL match field. If we didn't then it somehow isn't | |
1146 | * in the of_busses array or something equally catastrophic has | |
1147 | * gone wrong. | |
1148 | */ | |
1149 | assert(0); | |
1150 | return NULL; | |
1151 | } | |
1152 | ||
11e44fc6 | 1153 | static int of_translate_one(const void *blob, int parent, struct of_bus *bus, |
8aa5ec6e | 1154 | struct of_bus *pbus, fdt32_t *addr, |
a0342c08 KG |
1155 | int na, int ns, int pna, const char *rprop) |
1156 | { | |
8aa5ec6e | 1157 | const fdt32_t *ranges; |
a0342c08 KG |
1158 | int rlen; |
1159 | int rone; | |
1160 | u64 offset = OF_BAD_ADDR; | |
1161 | ||
1162 | /* Normally, an absence of a "ranges" property means we are | |
1163 | * crossing a non-translatable boundary, and thus the addresses | |
1164 | * below the current not cannot be converted to CPU physical ones. | |
1165 | * Unfortunately, while this is very clear in the spec, it's not | |
1166 | * what Apple understood, and they do have things like /uni-n or | |
1167 | * /ht nodes with no "ranges" property and a lot of perfectly | |
1168 | * useable mapped devices below them. Thus we treat the absence of | |
1169 | * "ranges" as equivalent to an empty "ranges" property which means | |
1170 | * a 1:1 translation at that level. It's up to the caller not to try | |
1171 | * to translate addresses that aren't supposed to be translated in | |
1172 | * the first place. --BenH. | |
1173 | */ | |
8aa5ec6e | 1174 | ranges = fdt_getprop(blob, parent, rprop, &rlen); |
a0342c08 | 1175 | if (ranges == NULL || rlen == 0) { |
eed36609 | 1176 | offset = fdt_read_number(addr, na); |
a0342c08 KG |
1177 | memset(addr, 0, pna * 4); |
1178 | debug("OF: no ranges, 1:1 translation\n"); | |
1179 | goto finish; | |
1180 | } | |
1181 | ||
1182 | debug("OF: walking ranges...\n"); | |
1183 | ||
1184 | /* Now walk through the ranges */ | |
1185 | rlen /= 4; | |
1186 | rone = na + pna + ns; | |
1187 | for (; rlen >= rone; rlen -= rone, ranges += rone) { | |
1188 | offset = bus->map(addr, ranges, na, ns, pna); | |
1189 | if (offset != OF_BAD_ADDR) | |
1190 | break; | |
1191 | } | |
1192 | if (offset == OF_BAD_ADDR) { | |
1193 | debug("OF: not found !\n"); | |
1194 | return 1; | |
1195 | } | |
1196 | memcpy(addr, ranges + na, 4 * pna); | |
1197 | ||
1198 | finish: | |
1199 | of_dump_addr("OF: parent translation for:", addr, pna); | |
dee37fc9 | 1200 | debug("OF: with offset: %llu\n", offset); |
a0342c08 KG |
1201 | |
1202 | /* Translate it into parent bus space */ | |
1203 | return pbus->translate(addr, offset, pna); | |
1204 | } | |
1205 | ||
1206 | /* | |
1207 | * Translate an address from the device-tree into a CPU physical address, | |
1208 | * this walks up the tree and applies the various bus mappings on the | |
1209 | * way. | |
1210 | * | |
1211 | * Note: We consider that crossing any level with #size-cells == 0 to mean | |
1212 | * that translation is impossible (that is we are not dealing with a value | |
1213 | * that can be mapped to a cpu physical address). This is not really specified | |
1214 | * that way, but this is traditionally the way IBM at least do things | |
1215 | */ | |
11e44fc6 SW |
1216 | static u64 __of_translate_address(const void *blob, int node_offset, |
1217 | const fdt32_t *in_addr, const char *rprop) | |
a0342c08 KG |
1218 | { |
1219 | int parent; | |
1220 | struct of_bus *bus, *pbus; | |
8aa5ec6e | 1221 | fdt32_t addr[OF_MAX_ADDR_CELLS]; |
a0342c08 KG |
1222 | int na, ns, pna, pns; |
1223 | u64 result = OF_BAD_ADDR; | |
1224 | ||
1225 | debug("OF: ** translation for device %s **\n", | |
1226 | fdt_get_name(blob, node_offset, NULL)); | |
1227 | ||
1228 | /* Get parent & match bus type */ | |
1229 | parent = fdt_parent_offset(blob, node_offset); | |
1230 | if (parent < 0) | |
1231 | goto bail; | |
0a222d53 | 1232 | bus = of_match_bus(blob, parent); |
a0342c08 KG |
1233 | |
1234 | /* Cound address cells & copy address locally */ | |
6395f318 | 1235 | bus->count_cells(blob, parent, &na, &ns); |
4428f3c8 | 1236 | if (!OF_CHECK_COUNTS(na, ns)) { |
a0342c08 KG |
1237 | printf("%s: Bad cell count for %s\n", __FUNCTION__, |
1238 | fdt_get_name(blob, node_offset, NULL)); | |
1239 | goto bail; | |
1240 | } | |
1241 | memcpy(addr, in_addr, na * 4); | |
1242 | ||
1243 | debug("OF: bus is %s (na=%d, ns=%d) on %s\n", | |
1244 | bus->name, na, ns, fdt_get_name(blob, parent, NULL)); | |
1245 | of_dump_addr("OF: translating address:", addr, na); | |
1246 | ||
1247 | /* Translate */ | |
1248 | for (;;) { | |
1249 | /* Switch to parent bus */ | |
1250 | node_offset = parent; | |
1251 | parent = fdt_parent_offset(blob, node_offset); | |
1252 | ||
1253 | /* If root, we have finished */ | |
1254 | if (parent < 0) { | |
1255 | debug("OF: reached root node\n"); | |
eed36609 | 1256 | result = fdt_read_number(addr, na); |
a0342c08 KG |
1257 | break; |
1258 | } | |
1259 | ||
1260 | /* Get new parent bus and counts */ | |
0a222d53 | 1261 | pbus = of_match_bus(blob, parent); |
6395f318 | 1262 | pbus->count_cells(blob, parent, &pna, &pns); |
4428f3c8 | 1263 | if (!OF_CHECK_COUNTS(pna, pns)) { |
a0342c08 KG |
1264 | printf("%s: Bad cell count for %s\n", __FUNCTION__, |
1265 | fdt_get_name(blob, node_offset, NULL)); | |
1266 | break; | |
1267 | } | |
1268 | ||
1269 | debug("OF: parent bus is %s (na=%d, ns=%d) on %s\n", | |
1270 | pbus->name, pna, pns, fdt_get_name(blob, parent, NULL)); | |
1271 | ||
1272 | /* Apply bus translation */ | |
1273 | if (of_translate_one(blob, node_offset, bus, pbus, | |
1274 | addr, na, ns, pna, rprop)) | |
1275 | break; | |
1276 | ||
1277 | /* Complete the move up one level */ | |
1278 | na = pna; | |
1279 | ns = pns; | |
1280 | bus = pbus; | |
1281 | ||
1282 | of_dump_addr("OF: one level translation:", addr, na); | |
1283 | } | |
1284 | bail: | |
1285 | ||
1286 | return result; | |
1287 | } | |
1288 | ||
11e44fc6 SW |
1289 | u64 fdt_translate_address(const void *blob, int node_offset, |
1290 | const fdt32_t *in_addr) | |
a0342c08 KG |
1291 | { |
1292 | return __of_translate_address(blob, node_offset, in_addr, "ranges"); | |
1293 | } | |
75e73afd KG |
1294 | |
1295 | /** | |
1296 | * fdt_node_offset_by_compat_reg: Find a node that matches compatiable and | |
1297 | * who's reg property matches a physical cpu address | |
1298 | * | |
1299 | * @blob: ptr to device tree | |
1300 | * @compat: compatiable string to match | |
1301 | * @compat_off: property name | |
1302 | * | |
1303 | */ | |
1304 | int fdt_node_offset_by_compat_reg(void *blob, const char *compat, | |
1305 | phys_addr_t compat_off) | |
1306 | { | |
1307 | int len, off = fdt_node_offset_by_compatible(blob, -1, compat); | |
1308 | while (off != -FDT_ERR_NOTFOUND) { | |
8aa5ec6e | 1309 | const fdt32_t *reg = fdt_getprop(blob, off, "reg", &len); |
75e73afd KG |
1310 | if (reg) { |
1311 | if (compat_off == fdt_translate_address(blob, off, reg)) | |
1312 | return off; | |
1313 | } | |
1314 | off = fdt_node_offset_by_compatible(blob, off, compat); | |
1315 | } | |
1316 | ||
1317 | return -FDT_ERR_NOTFOUND; | |
1318 | } | |
1319 | ||
b4b847e9 KG |
1320 | /** |
1321 | * fdt_alloc_phandle: Return next free phandle value | |
1322 | * | |
1323 | * @blob: ptr to device tree | |
1324 | */ | |
1325 | int fdt_alloc_phandle(void *blob) | |
1326 | { | |
b4141195 MY |
1327 | int offset; |
1328 | uint32_t phandle = 0; | |
b4b847e9 KG |
1329 | |
1330 | for (offset = fdt_next_node(blob, -1, NULL); offset >= 0; | |
1331 | offset = fdt_next_node(blob, offset, NULL)) { | |
50bf17bd | 1332 | phandle = max(phandle, fdt_get_phandle(blob, offset)); |
b4b847e9 | 1333 | } |
75e73afd | 1334 | |
b4b847e9 KG |
1335 | return phandle + 1; |
1336 | } | |
beca5a5f | 1337 | |
a8d2a75d | 1338 | /* |
f117c0f0 | 1339 | * fdt_set_phandle: Create a phandle property for the given node |
a8d2a75d GVB |
1340 | * |
1341 | * @fdt: ptr to device tree | |
1342 | * @nodeoffset: node to update | |
1343 | * @phandle: phandle value to set (must be unique) | |
f117c0f0 KG |
1344 | */ |
1345 | int fdt_set_phandle(void *fdt, int nodeoffset, uint32_t phandle) | |
a8d2a75d GVB |
1346 | { |
1347 | int ret; | |
1348 | ||
1349 | #ifdef DEBUG | |
1350 | int off = fdt_node_offset_by_phandle(fdt, phandle); | |
1351 | ||
1352 | if ((off >= 0) && (off != nodeoffset)) { | |
1353 | char buf[64]; | |
1354 | ||
1355 | fdt_get_path(fdt, nodeoffset, buf, sizeof(buf)); | |
1356 | printf("Trying to update node %s with phandle %u ", | |
1357 | buf, phandle); | |
1358 | ||
1359 | fdt_get_path(fdt, off, buf, sizeof(buf)); | |
1360 | printf("that already exists in node %s.\n", buf); | |
1361 | return -FDT_ERR_BADPHANDLE; | |
1362 | } | |
1363 | #endif | |
1364 | ||
1365 | ret = fdt_setprop_cell(fdt, nodeoffset, "phandle", phandle); | |
1366 | if (ret < 0) | |
1367 | return ret; | |
1368 | ||
1369 | /* | |
1370 | * For now, also set the deprecated "linux,phandle" property, so that we | |
1371 | * don't break older kernels. | |
1372 | */ | |
1373 | ret = fdt_setprop_cell(fdt, nodeoffset, "linux,phandle", phandle); | |
1374 | ||
1375 | return ret; | |
1376 | } | |
1377 | ||
10aeabd1 KG |
1378 | /* |
1379 | * fdt_create_phandle: Create a phandle property for the given node | |
1380 | * | |
1381 | * @fdt: ptr to device tree | |
1382 | * @nodeoffset: node to update | |
1383 | */ | |
3c927ccc | 1384 | unsigned int fdt_create_phandle(void *fdt, int nodeoffset) |
10aeabd1 KG |
1385 | { |
1386 | /* see if there is a phandle already */ | |
1387 | int phandle = fdt_get_phandle(fdt, nodeoffset); | |
1388 | ||
1389 | /* if we got 0, means no phandle so create one */ | |
1390 | if (phandle == 0) { | |
3c927ccc TT |
1391 | int ret; |
1392 | ||
10aeabd1 | 1393 | phandle = fdt_alloc_phandle(fdt); |
3c927ccc TT |
1394 | ret = fdt_set_phandle(fdt, nodeoffset, phandle); |
1395 | if (ret < 0) { | |
1396 | printf("Can't set phandle %u: %s\n", phandle, | |
1397 | fdt_strerror(ret)); | |
1398 | return 0; | |
1399 | } | |
10aeabd1 KG |
1400 | } |
1401 | ||
1402 | return phandle; | |
1403 | } | |
1404 | ||
2a523f52 SL |
1405 | /* |
1406 | * fdt_set_node_status: Set status for the given node | |
1407 | * | |
1408 | * @fdt: ptr to device tree | |
1409 | * @nodeoffset: node to update | |
1410 | * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED, | |
1411 | * FDT_STATUS_FAIL, FDT_STATUS_FAIL_ERROR_CODE | |
1412 | * @error_code: optional, only used if status is FDT_STATUS_FAIL_ERROR_CODE | |
1413 | */ | |
1414 | int fdt_set_node_status(void *fdt, int nodeoffset, | |
1415 | enum fdt_status status, unsigned int error_code) | |
1416 | { | |
1417 | char buf[16]; | |
1418 | int ret = 0; | |
1419 | ||
1420 | if (nodeoffset < 0) | |
1421 | return nodeoffset; | |
1422 | ||
1423 | switch (status) { | |
1424 | case FDT_STATUS_OKAY: | |
1425 | ret = fdt_setprop_string(fdt, nodeoffset, "status", "okay"); | |
1426 | break; | |
1427 | case FDT_STATUS_DISABLED: | |
1428 | ret = fdt_setprop_string(fdt, nodeoffset, "status", "disabled"); | |
1429 | break; | |
1430 | case FDT_STATUS_FAIL: | |
1431 | ret = fdt_setprop_string(fdt, nodeoffset, "status", "fail"); | |
1432 | break; | |
1433 | case FDT_STATUS_FAIL_ERROR_CODE: | |
1434 | sprintf(buf, "fail-%d", error_code); | |
1435 | ret = fdt_setprop_string(fdt, nodeoffset, "status", buf); | |
1436 | break; | |
1437 | default: | |
1438 | printf("Invalid fdt status: %x\n", status); | |
1439 | ret = -1; | |
1440 | break; | |
1441 | } | |
1442 | ||
1443 | return ret; | |
1444 | } | |
1445 | ||
1446 | /* | |
1447 | * fdt_set_status_by_alias: Set status for the given node given an alias | |
1448 | * | |
1449 | * @fdt: ptr to device tree | |
1450 | * @alias: alias of node to update | |
1451 | * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED, | |
1452 | * FDT_STATUS_FAIL, FDT_STATUS_FAIL_ERROR_CODE | |
1453 | * @error_code: optional, only used if status is FDT_STATUS_FAIL_ERROR_CODE | |
1454 | */ | |
1455 | int fdt_set_status_by_alias(void *fdt, const char* alias, | |
1456 | enum fdt_status status, unsigned int error_code) | |
1457 | { | |
1458 | int offset = fdt_path_offset(fdt, alias); | |
1459 | ||
1460 | return fdt_set_node_status(fdt, offset, status, error_code); | |
1461 | } | |
1462 | ||
096eb3f5 | 1463 | #if defined(CONFIG_VIDEO) || defined(CONFIG_LCD) |
beca5a5f AG |
1464 | int fdt_add_edid(void *blob, const char *compat, unsigned char *edid_buf) |
1465 | { | |
1466 | int noff; | |
1467 | int ret; | |
1468 | ||
1469 | noff = fdt_node_offset_by_compatible(blob, -1, compat); | |
1470 | if (noff != -FDT_ERR_NOTFOUND) { | |
1471 | debug("%s: %s\n", fdt_get_name(blob, noff, 0), compat); | |
1472 | add_edid: | |
1473 | ret = fdt_setprop(blob, noff, "edid", edid_buf, 128); | |
1474 | if (ret == -FDT_ERR_NOSPACE) { | |
1475 | ret = fdt_increase_size(blob, 512); | |
1476 | if (!ret) | |
1477 | goto add_edid; | |
1478 | else | |
1479 | goto err_size; | |
1480 | } else if (ret < 0) { | |
1481 | printf("Can't add property: %s\n", fdt_strerror(ret)); | |
1482 | return ret; | |
1483 | } | |
1484 | } | |
1485 | return 0; | |
1486 | err_size: | |
1487 | printf("Can't increase blob size: %s\n", fdt_strerror(ret)); | |
1488 | return ret; | |
1489 | } | |
1490 | #endif | |
bb682001 TT |
1491 | |
1492 | /* | |
1493 | * Verify the physical address of device tree node for a given alias | |
1494 | * | |
1495 | * This function locates the device tree node of a given alias, and then | |
1496 | * verifies that the physical address of that device matches the given | |
1497 | * parameter. It displays a message if there is a mismatch. | |
1498 | * | |
1499 | * Returns 1 on success, 0 on failure | |
1500 | */ | |
1501 | int fdt_verify_alias_address(void *fdt, int anode, const char *alias, u64 addr) | |
1502 | { | |
1503 | const char *path; | |
8aa5ec6e | 1504 | const fdt32_t *reg; |
bb682001 TT |
1505 | int node, len; |
1506 | u64 dt_addr; | |
1507 | ||
1508 | path = fdt_getprop(fdt, anode, alias, NULL); | |
1509 | if (!path) { | |
1510 | /* If there's no such alias, then it's not a failure */ | |
1511 | return 1; | |
1512 | } | |
1513 | ||
1514 | node = fdt_path_offset(fdt, path); | |
1515 | if (node < 0) { | |
1516 | printf("Warning: device tree alias '%s' points to invalid " | |
1517 | "node %s.\n", alias, path); | |
1518 | return 0; | |
1519 | } | |
1520 | ||
1521 | reg = fdt_getprop(fdt, node, "reg", &len); | |
1522 | if (!reg) { | |
1523 | printf("Warning: device tree node '%s' has no address.\n", | |
1524 | path); | |
1525 | return 0; | |
1526 | } | |
1527 | ||
1528 | dt_addr = fdt_translate_address(fdt, node, reg); | |
1529 | if (addr != dt_addr) { | |
dee37fc9 MY |
1530 | printf("Warning: U-Boot configured device %s at address %llu,\n" |
1531 | "but the device tree has it address %llx.\n", | |
1532 | alias, addr, dt_addr); | |
bb682001 TT |
1533 | return 0; |
1534 | } | |
1535 | ||
1536 | return 1; | |
1537 | } | |
1538 | ||
1539 | /* | |
1540 | * Returns the base address of an SOC or PCI node | |
1541 | */ | |
ec002119 | 1542 | u64 fdt_get_base_address(const void *fdt, int node) |
bb682001 TT |
1543 | { |
1544 | int size; | |
8aa5ec6e | 1545 | const fdt32_t *prop; |
bb682001 | 1546 | |
336a4487 | 1547 | prop = fdt_getprop(fdt, node, "reg", &size); |
bb682001 | 1548 | |
336a4487 | 1549 | return prop ? fdt_translate_address(fdt, node, prop) : 0; |
bb682001 | 1550 | } |
c48e6868 AG |
1551 | |
1552 | /* | |
1553 | * Read a property of size <prop_len>. Currently only supports 1 or 2 cells. | |
1554 | */ | |
1555 | static int fdt_read_prop(const fdt32_t *prop, int prop_len, int cell_off, | |
1556 | uint64_t *val, int cells) | |
1557 | { | |
1558 | const fdt32_t *prop32 = &prop[cell_off]; | |
1559 | const fdt64_t *prop64 = (const fdt64_t *)&prop[cell_off]; | |
1560 | ||
1561 | if ((cell_off + cells) > prop_len) | |
1562 | return -FDT_ERR_NOSPACE; | |
1563 | ||
1564 | switch (cells) { | |
1565 | case 1: | |
1566 | *val = fdt32_to_cpu(*prop32); | |
1567 | break; | |
1568 | case 2: | |
1569 | *val = fdt64_to_cpu(*prop64); | |
1570 | break; | |
1571 | default: | |
1572 | return -FDT_ERR_NOSPACE; | |
1573 | } | |
1574 | ||
1575 | return 0; | |
1576 | } | |
1577 | ||
1578 | /** | |
1579 | * fdt_read_range - Read a node's n'th range property | |
1580 | * | |
1581 | * @fdt: ptr to device tree | |
1582 | * @node: offset of node | |
1583 | * @n: range index | |
1584 | * @child_addr: pointer to storage for the "child address" field | |
1585 | * @addr: pointer to storage for the CPU view translated physical start | |
1586 | * @len: pointer to storage for the range length | |
1587 | * | |
1588 | * Convenience function that reads and interprets a specific range out of | |
1589 | * a number of the "ranges" property array. | |
1590 | */ | |
1591 | int fdt_read_range(void *fdt, int node, int n, uint64_t *child_addr, | |
1592 | uint64_t *addr, uint64_t *len) | |
1593 | { | |
1594 | int pnode = fdt_parent_offset(fdt, node); | |
1595 | const fdt32_t *ranges; | |
1596 | int pacells; | |
1597 | int acells; | |
1598 | int scells; | |
1599 | int ranges_len; | |
1600 | int cell = 0; | |
1601 | int r = 0; | |
1602 | ||
1603 | /* | |
1604 | * The "ranges" property is an array of | |
1605 | * { <child address> <parent address> <size in child address space> } | |
1606 | * | |
1607 | * All 3 elements can span a diffent number of cells. Fetch their size. | |
1608 | */ | |
1609 | pacells = fdt_getprop_u32_default_node(fdt, pnode, 0, "#address-cells", 1); | |
1610 | acells = fdt_getprop_u32_default_node(fdt, node, 0, "#address-cells", 1); | |
1611 | scells = fdt_getprop_u32_default_node(fdt, node, 0, "#size-cells", 1); | |
1612 | ||
1613 | /* Now try to get the ranges property */ | |
1614 | ranges = fdt_getprop(fdt, node, "ranges", &ranges_len); | |
1615 | if (!ranges) | |
1616 | return -FDT_ERR_NOTFOUND; | |
1617 | ranges_len /= sizeof(uint32_t); | |
1618 | ||
1619 | /* Jump to the n'th entry */ | |
1620 | cell = n * (pacells + acells + scells); | |
1621 | ||
1622 | /* Read <child address> */ | |
1623 | if (child_addr) { | |
1624 | r = fdt_read_prop(ranges, ranges_len, cell, child_addr, | |
1625 | acells); | |
1626 | if (r) | |
1627 | return r; | |
1628 | } | |
1629 | cell += acells; | |
1630 | ||
1631 | /* Read <parent address> */ | |
1632 | if (addr) | |
1633 | *addr = fdt_translate_address(fdt, node, ranges + cell); | |
1634 | cell += pacells; | |
1635 | ||
1636 | /* Read <size in child address space> */ | |
1637 | if (len) { | |
1638 | r = fdt_read_prop(ranges, ranges_len, cell, len, scells); | |
1639 | if (r) | |
1640 | return r; | |
1641 | } | |
1642 | ||
1643 | return 0; | |
1644 | } | |
d4f495a8 HG |
1645 | |
1646 | /** | |
1647 | * fdt_setup_simplefb_node - Fill and enable a simplefb node | |
1648 | * | |
1649 | * @fdt: ptr to device tree | |
1650 | * @node: offset of the simplefb node | |
1651 | * @base_address: framebuffer base address | |
1652 | * @width: width in pixels | |
1653 | * @height: height in pixels | |
1654 | * @stride: bytes per line | |
1655 | * @format: pixel format string | |
1656 | * | |
1657 | * Convenience function to fill and enable a simplefb node. | |
1658 | */ | |
1659 | int fdt_setup_simplefb_node(void *fdt, int node, u64 base_address, u32 width, | |
1660 | u32 height, u32 stride, const char *format) | |
1661 | { | |
1662 | char name[32]; | |
1663 | fdt32_t cells[4]; | |
1664 | int i, addrc, sizec, ret; | |
1665 | ||
eed36609 SG |
1666 | fdt_support_default_count_cells(fdt, fdt_parent_offset(fdt, node), |
1667 | &addrc, &sizec); | |
d4f495a8 HG |
1668 | i = 0; |
1669 | if (addrc == 2) | |
1670 | cells[i++] = cpu_to_fdt32(base_address >> 32); | |
1671 | cells[i++] = cpu_to_fdt32(base_address); | |
1672 | if (sizec == 2) | |
1673 | cells[i++] = 0; | |
1674 | cells[i++] = cpu_to_fdt32(height * stride); | |
1675 | ||
1676 | ret = fdt_setprop(fdt, node, "reg", cells, sizeof(cells[0]) * i); | |
1677 | if (ret < 0) | |
1678 | return ret; | |
1679 | ||
dee37fc9 | 1680 | snprintf(name, sizeof(name), "framebuffer@%llx", base_address); |
d4f495a8 HG |
1681 | ret = fdt_set_name(fdt, node, name); |
1682 | if (ret < 0) | |
1683 | return ret; | |
1684 | ||
1685 | ret = fdt_setprop_u32(fdt, node, "width", width); | |
1686 | if (ret < 0) | |
1687 | return ret; | |
1688 | ||
1689 | ret = fdt_setprop_u32(fdt, node, "height", height); | |
1690 | if (ret < 0) | |
1691 | return ret; | |
1692 | ||
1693 | ret = fdt_setprop_u32(fdt, node, "stride", stride); | |
1694 | if (ret < 0) | |
1695 | return ret; | |
1696 | ||
1697 | ret = fdt_setprop_string(fdt, node, "format", format); | |
1698 | if (ret < 0) | |
1699 | return ret; | |
1700 | ||
1701 | ret = fdt_setprop_string(fdt, node, "status", "okay"); | |
1702 | if (ret < 0) | |
1703 | return ret; | |
1704 | ||
1705 | return 0; | |
1706 | } | |
08daa258 TH |
1707 | |
1708 | /* | |
1709 | * Update native-mode in display-timings from display environment variable. | |
1710 | * The node to update are specified by path. | |
1711 | */ | |
1712 | int fdt_fixup_display(void *blob, const char *path, const char *display) | |
1713 | { | |
1714 | int off, toff; | |
1715 | ||
1716 | if (!display || !path) | |
1717 | return -FDT_ERR_NOTFOUND; | |
1718 | ||
1719 | toff = fdt_path_offset(blob, path); | |
1720 | if (toff >= 0) | |
1721 | toff = fdt_subnode_offset(blob, toff, "display-timings"); | |
1722 | if (toff < 0) | |
1723 | return toff; | |
1724 | ||
1725 | for (off = fdt_first_subnode(blob, toff); | |
1726 | off >= 0; | |
1727 | off = fdt_next_subnode(blob, off)) { | |
1728 | uint32_t h = fdt_get_phandle(blob, off); | |
1729 | debug("%s:0x%x\n", fdt_get_name(blob, off, NULL), | |
1730 | fdt32_to_cpu(h)); | |
1731 | if (strcasecmp(fdt_get_name(blob, off, NULL), display) == 0) | |
1732 | return fdt_setprop_u32(blob, toff, "native-mode", h); | |
1733 | } | |
1734 | return toff; | |
1735 | } | |
fc7c3189 PA |
1736 | |
1737 | #ifdef CONFIG_OF_LIBFDT_OVERLAY | |
1738 | /** | |
1739 | * fdt_overlay_apply_verbose - Apply an overlay with verbose error reporting | |
1740 | * | |
1741 | * @fdt: ptr to device tree | |
1742 | * @fdto: ptr to device tree overlay | |
1743 | * | |
1744 | * Convenience function to apply an overlay and display helpful messages | |
1745 | * in the case of an error | |
1746 | */ | |
1747 | int fdt_overlay_apply_verbose(void *fdt, void *fdto) | |
1748 | { | |
1749 | int err; | |
1750 | bool has_symbols; | |
1751 | ||
1752 | err = fdt_path_offset(fdt, "/__symbols__"); | |
1753 | has_symbols = err >= 0; | |
1754 | ||
1755 | err = fdt_overlay_apply(fdt, fdto); | |
1756 | if (err < 0) { | |
1757 | printf("failed on fdt_overlay_apply(): %s\n", | |
1758 | fdt_strerror(err)); | |
1759 | if (!has_symbols) { | |
1760 | printf("base fdt does did not have a /__symbols__ node\n"); | |
1761 | printf("make sure you've compiled with -@\n"); | |
1762 | } | |
1763 | } | |
1764 | return err; | |
1765 | } | |
1766 | #endif |