1 /*
2 * (C) Copyright 2007
3 * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24 #include <common.h>
25 #include <stdio_dev.h>
26 #include <linux/ctype.h>
27 #include <linux/types.h>
28 #include <asm/global_data.h>
29 #include <fdt.h>
30 #include <libfdt.h>
31 #include <fdt_support.h>
32 #include <exports.h>
33
34 /*
35 * Global data (for the gd->bd)
36 */
37 DECLARE_GLOBAL_DATA_PTR;
38
39 /**
40 * fdt_getprop_u32_default - Find a node and return it's property or a default
41 *
42 * @fdt: ptr to device tree
43 * @path: path of node
44 * @prop: property name
45 * @dflt: default value if the property isn't found
46 *
47 * Convenience function to find a node and return it's property or a
48 * default value if it doesn't exist.
49 */
fdt_getprop_u32_default(void * fdt,const char * path,const char * prop,const u32 dflt)50 u32 fdt_getprop_u32_default(void *fdt, const char *path, const char *prop,
51 const u32 dflt)
52 {
53 const u32 *val;
54 int off;
55
56 off = fdt_path_offset(fdt, path);
57 if (off < 0)
58 return dflt;
59
60 val = fdt_getprop(fdt, off, prop, NULL);
61 if (val)
62 return *val;
63 else
64 return dflt;
65 }
66
67 /**
68 * fdt_find_and_setprop: Find a node and set it's property
69 *
70 * @fdt: ptr to device tree
71 * @node: path of node
72 * @prop: property name
73 * @val: ptr to new value
74 * @len: length of new property value
75 * @create: flag to create the property if it doesn't exist
76 *
77 * Convenience function to directly set a property given the path to the node.
78 */
fdt_find_and_setprop(void * fdt,const char * node,const char * prop,const void * val,int len,int create)79 int fdt_find_and_setprop(void *fdt, const char *node, const char *prop,
80 const void *val, int len, int create)
81 {
82 int nodeoff = fdt_path_offset(fdt, node);
83
84 if (nodeoff < 0)
85 return nodeoff;
86
87 if ((!create) && (fdt_get_property(fdt, nodeoff, prop, 0) == NULL))
88 return 0; /* create flag not set; so exit quietly */
89
90 return fdt_setprop(fdt, nodeoff, prop, val, len);
91 }
92
93 #ifdef CONFIG_OF_STDOUT_VIA_ALIAS
94
95 #ifdef CONFIG_SERIAL_MULTI
fdt_fill_multisername(char * sername,size_t maxlen)96 static void fdt_fill_multisername(char *sername, size_t maxlen)
97 {
98 const char *outname = stdio_devices[stdout]->name;
99
100 if (strcmp(outname, "serial") > 0)
101 strncpy(sername, outname, maxlen);
102
103 /* eserial? */
104 if (strcmp(outname + 1, "serial") > 0)
105 strncpy(sername, outname + 1, maxlen);
106 }
107 #else
fdt_fill_multisername(char * sername,size_t maxlen)108 static inline void fdt_fill_multisername(char *sername, size_t maxlen) {}
109 #endif /* CONFIG_SERIAL_MULTI */
110
fdt_fixup_stdout(void * fdt,int chosenoff)111 static int fdt_fixup_stdout(void *fdt, int chosenoff)
112 {
113 int err = 0;
114 #ifdef CONFIG_CONS_INDEX
115 int node;
116 char sername[9] = { 0 };
117 const char *path;
118
119 fdt_fill_multisername(sername, sizeof(sername) - 1);
120 if (!sername[0])
121 sprintf(sername, "serial%d", CONFIG_CONS_INDEX - 1);
122
123 err = node = fdt_path_offset(fdt, "/aliases");
124 if (node >= 0) {
125 int len;
126 path = fdt_getprop(fdt, node, sername, &len);
127 if (path) {
128 char *p = malloc(len);
129 err = -FDT_ERR_NOSPACE;
130 if (p) {
131 memcpy(p, path, len);
132 err = fdt_setprop(fdt, chosenoff,
133 "linux,stdout-path", p, len);
134 free(p);
135 }
136 } else {
137 err = len;
138 }
139 }
140 #endif
141 if (err < 0)
142 printf("WARNING: could not set linux,stdout-path %s.\n",
143 fdt_strerror(err));
144
145 return err;
146 }
147 #endif
148
fdt_initrd(void * fdt,ulong initrd_start,ulong initrd_end,int force)149 int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end, int force)
150 {
151 int nodeoffset;
152 int err, j, total;
153 u32 tmp;
154 const char *path;
155 uint64_t addr, size;
156
157 /* Find the "chosen" node. */
158 nodeoffset = fdt_path_offset (fdt, "/chosen");
159
160 /* If there is no "chosen" node in the blob return */
161 if (nodeoffset < 0) {
162 printf("fdt_initrd: %s\n", fdt_strerror(nodeoffset));
163 return nodeoffset;
164 }
165
166 /* just return if initrd_start/end aren't valid */
167 if ((initrd_start == 0) || (initrd_end == 0))
168 return 0;
169
170 total = fdt_num_mem_rsv(fdt);
171
172 /*
173 * Look for an existing entry and update it. If we don't find
174 * the entry, we will j be the next available slot.
175 */
176 for (j = 0; j < total; j++) {
177 err = fdt_get_mem_rsv(fdt, j, &addr, &size);
178 if (addr == initrd_start) {
179 fdt_del_mem_rsv(fdt, j);
180 break;
181 }
182 }
183
184 err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start + 1);
185 if (err < 0) {
186 printf("fdt_initrd: %s\n", fdt_strerror(err));
187 return err;
188 }
189
190 path = fdt_getprop(fdt, nodeoffset, "linux,initrd-start", NULL);
191 if ((path == NULL) || force) {
192 tmp = __cpu_to_be32(initrd_start);
193 err = fdt_setprop(fdt, nodeoffset,
194 "linux,initrd-start", &tmp, sizeof(tmp));
195 if (err < 0) {
196 printf("WARNING: "
197 "could not set linux,initrd-start %s.\n",
198 fdt_strerror(err));
199 return err;
200 }
201 tmp = __cpu_to_be32(initrd_end);
202 err = fdt_setprop(fdt, nodeoffset,
203 "linux,initrd-end", &tmp, sizeof(tmp));
204 if (err < 0) {
205 printf("WARNING: could not set linux,initrd-end %s.\n",
206 fdt_strerror(err));
207
208 return err;
209 }
210 }
211
212 return 0;
213 }
214
fdt_chosen(void * fdt,int force)215 int fdt_chosen(void *fdt, int force)
216 {
217 int nodeoffset;
218 int err;
219 char *str; /* used to set string properties */
220 const char *path;
221
222 err = fdt_check_header(fdt);
223 if (err < 0) {
224 printf("fdt_chosen: %s\n", fdt_strerror(err));
225 return err;
226 }
227
228 /*
229 * Find the "chosen" node.
230 */
231 nodeoffset = fdt_path_offset (fdt, "/chosen");
232
233 /*
234 * If there is no "chosen" node in the blob, create it.
235 */
236 if (nodeoffset < 0) {
237 /*
238 * Create a new node "/chosen" (offset 0 is root level)
239 */
240 nodeoffset = fdt_add_subnode(fdt, 0, "chosen");
241 if (nodeoffset < 0) {
242 printf("WARNING: could not create /chosen %s.\n",
243 fdt_strerror(nodeoffset));
244 return nodeoffset;
245 }
246 }
247
248 /*
249 * Create /chosen properites that don't exist in the fdt.
250 * If the property exists, update it only if the "force" parameter
251 * is true.
252 */
253 str = getenv("bootargs");
254 if (str != NULL) {
255 path = fdt_getprop(fdt, nodeoffset, "bootargs", NULL);
256 if ((path == NULL) || force) {
257 err = fdt_setprop(fdt, nodeoffset,
258 "bootargs", str, strlen(str)+1);
259 if (err < 0)
260 printf("WARNING: could not set bootargs %s.\n",
261 fdt_strerror(err));
262 }
263 }
264
265 #ifdef CONFIG_OF_STDOUT_VIA_ALIAS
266 path = fdt_getprop(fdt, nodeoffset, "linux,stdout-path", NULL);
267 if ((path == NULL) || force)
268 err = fdt_fixup_stdout(fdt, nodeoffset);
269 #endif
270
271 #ifdef OF_STDOUT_PATH
272 path = fdt_getprop(fdt, nodeoffset, "linux,stdout-path", NULL);
273 if ((path == NULL) || force) {
274 err = fdt_setprop(fdt, nodeoffset,
275 "linux,stdout-path", OF_STDOUT_PATH, strlen(OF_STDOUT_PATH)+1);
276 if (err < 0)
277 printf("WARNING: could not set linux,stdout-path %s.\n",
278 fdt_strerror(err));
279 }
280 #endif
281
282 return err;
283 }
284
do_fixup_by_path(void * fdt,const char * path,const char * prop,const void * val,int len,int create)285 void do_fixup_by_path(void *fdt, const char *path, const char *prop,
286 const void *val, int len, int create)
287 {
288 #if defined(DEBUG)
289 int i;
290 debug("Updating property '%s/%s' = ", path, prop);
291 for (i = 0; i < len; i++)
292 debug(" %.2x", *(u8*)(val+i));
293 debug("\n");
294 #endif
295 int rc = fdt_find_and_setprop(fdt, path, prop, val, len, create);
296 if (rc)
297 printf("Unable to update property %s:%s, err=%s\n",
298 path, prop, fdt_strerror(rc));
299 }
300
do_fixup_by_path_u32(void * fdt,const char * path,const char * prop,u32 val,int create)301 void do_fixup_by_path_u32(void *fdt, const char *path, const char *prop,
302 u32 val, int create)
303 {
304 val = cpu_to_fdt32(val);
305 do_fixup_by_path(fdt, path, prop, &val, sizeof(val), create);
306 }
307
do_fixup_by_prop(void * fdt,const char * pname,const void * pval,int plen,const char * prop,const void * val,int len,int create)308 void do_fixup_by_prop(void *fdt,
309 const char *pname, const void *pval, int plen,
310 const char *prop, const void *val, int len,
311 int create)
312 {
313 int off;
314 #if defined(DEBUG)
315 int i;
316 debug("Updating property '%s' = ", prop);
317 for (i = 0; i < len; i++)
318 debug(" %.2x", *(u8*)(val+i));
319 debug("\n");
320 #endif
321 off = fdt_node_offset_by_prop_value(fdt, -1, pname, pval, plen);
322 while (off != -FDT_ERR_NOTFOUND) {
323 if (create || (fdt_get_property(fdt, off, prop, 0) != NULL))
324 fdt_setprop(fdt, off, prop, val, len);
325 off = fdt_node_offset_by_prop_value(fdt, off, pname, pval, plen);
326 }
327 }
328
do_fixup_by_prop_u32(void * fdt,const char * pname,const void * pval,int plen,const char * prop,u32 val,int create)329 void do_fixup_by_prop_u32(void *fdt,
330 const char *pname, const void *pval, int plen,
331 const char *prop, u32 val, int create)
332 {
333 val = cpu_to_fdt32(val);
334 do_fixup_by_prop(fdt, pname, pval, plen, prop, &val, 4, create);
335 }
336
do_fixup_by_compat(void * fdt,const char * compat,const char * prop,const void * val,int len,int create)337 void do_fixup_by_compat(void *fdt, const char *compat,
338 const char *prop, const void *val, int len, int create)
339 {
340 int off = -1;
341 #if defined(DEBUG)
342 int i;
343 debug("Updating property '%s' = ", prop);
344 for (i = 0; i < len; i++)
345 debug(" %.2x", *(u8*)(val+i));
346 debug("\n");
347 #endif
348 off = fdt_node_offset_by_compatible(fdt, -1, compat);
349 while (off != -FDT_ERR_NOTFOUND) {
350 if (create || (fdt_get_property(fdt, off, prop, 0) != NULL))
351 fdt_setprop(fdt, off, prop, val, len);
352 off = fdt_node_offset_by_compatible(fdt, off, compat);
353 }
354 }
355
do_fixup_by_compat_u32(void * fdt,const char * compat,const char * prop,u32 val,int create)356 void do_fixup_by_compat_u32(void *fdt, const char *compat,
357 const char *prop, u32 val, int create)
358 {
359 val = cpu_to_fdt32(val);
360 do_fixup_by_compat(fdt, compat, prop, &val, 4, create);
361 }
362
fdt_fixup_memory(void * blob,u64 start,u64 size)363 int fdt_fixup_memory(void *blob, u64 start, u64 size)
364 {
365 int err, nodeoffset, len = 0;
366 u8 tmp[16];
367 const u32 *addrcell, *sizecell;
368
369 err = fdt_check_header(blob);
370 if (err < 0) {
371 printf("%s: %s\n", __FUNCTION__, fdt_strerror(err));
372 return err;
373 }
374
375 /* update, or add and update /memory node */
376 nodeoffset = fdt_path_offset(blob, "/memory");
377 if (nodeoffset < 0) {
378 nodeoffset = fdt_add_subnode(blob, 0, "memory");
379 if (nodeoffset < 0)
380 printf("WARNING: could not create /memory: %s.\n",
381 fdt_strerror(nodeoffset));
382 return nodeoffset;
383 }
384 err = fdt_setprop(blob, nodeoffset, "device_type", "memory",
385 sizeof("memory"));
386 if (err < 0) {
387 printf("WARNING: could not set %s %s.\n", "device_type",
388 fdt_strerror(err));
389 return err;
390 }
391
392 addrcell = fdt_getprop(blob, 0, "#address-cells", NULL);
393 /* use shifts and mask to ensure endianness */
394 if ((addrcell) && (*addrcell == 2)) {
395 tmp[0] = (start >> 56) & 0xff;
396 tmp[1] = (start >> 48) & 0xff;
397 tmp[2] = (start >> 40) & 0xff;
398 tmp[3] = (start >> 32) & 0xff;
399 tmp[4] = (start >> 24) & 0xff;
400 tmp[5] = (start >> 16) & 0xff;
401 tmp[6] = (start >> 8) & 0xff;
402 tmp[7] = (start ) & 0xff;
403 len = 8;
404 } else {
405 tmp[0] = (start >> 24) & 0xff;
406 tmp[1] = (start >> 16) & 0xff;
407 tmp[2] = (start >> 8) & 0xff;
408 tmp[3] = (start ) & 0xff;
409 len = 4;
410 }
411
412 sizecell = fdt_getprop(blob, 0, "#size-cells", NULL);
413 /* use shifts and mask to ensure endianness */
414 if ((sizecell) && (*sizecell == 2)) {
415 tmp[0+len] = (size >> 56) & 0xff;
416 tmp[1+len] = (size >> 48) & 0xff;
417 tmp[2+len] = (size >> 40) & 0xff;
418 tmp[3+len] = (size >> 32) & 0xff;
419 tmp[4+len] = (size >> 24) & 0xff;
420 tmp[5+len] = (size >> 16) & 0xff;
421 tmp[6+len] = (size >> 8) & 0xff;
422 tmp[7+len] = (size ) & 0xff;
423 len += 8;
424 } else {
425 tmp[0+len] = (size >> 24) & 0xff;
426 tmp[1+len] = (size >> 16) & 0xff;
427 tmp[2+len] = (size >> 8) & 0xff;
428 tmp[3+len] = (size ) & 0xff;
429 len += 4;
430 }
431
432 err = fdt_setprop(blob, nodeoffset, "reg", tmp, len);
433 if (err < 0) {
434 printf("WARNING: could not set %s %s.\n",
435 "reg", fdt_strerror(err));
436 return err;
437 }
438 return 0;
439 }
440
fdt_fixup_ethernet(void * fdt)441 void fdt_fixup_ethernet(void *fdt)
442 {
443 int node, i, j;
444 char enet[16], *tmp, *end;
445 char mac[16] = "ethaddr";
446 const char *path;
447 unsigned char mac_addr[6];
448
449 node = fdt_path_offset(fdt, "/aliases");
450 if (node < 0)
451 return;
452
453 i = 0;
454 while ((tmp = getenv(mac)) != NULL) {
455 sprintf(enet, "ethernet%d", i);
456 path = fdt_getprop(fdt, node, enet, NULL);
457 if (!path) {
458 debug("No alias for %s\n", enet);
459 sprintf(mac, "eth%daddr", ++i);
460 continue;
461 }
462
463 for (j = 0; j < 6; j++) {
464 mac_addr[j] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
465 if (tmp)
466 tmp = (*end) ? end+1 : end;
467 }
468
469 do_fixup_by_path(fdt, path, "mac-address", &mac_addr, 6, 0);
470 do_fixup_by_path(fdt, path, "local-mac-address",
471 &mac_addr, 6, 1);
472
473 sprintf(mac, "eth%daddr", ++i);
474 }
475 }
476
477 #ifdef CONFIG_HAS_FSL_DR_USB
fdt_fixup_dr_usb(void * blob,bd_t * bd)478 void fdt_fixup_dr_usb(void *blob, bd_t *bd)
479 {
480 char *mode;
481 char *type;
482 const char *compat = "fsl-usb2-dr";
483 const char *prop_mode = "dr_mode";
484 const char *prop_type = "phy_type";
485 int node_offset;
486 int err;
487
488 mode = getenv("usb_dr_mode");
489 type = getenv("usb_phy_type");
490 if (!mode && !type)
491 return;
492
493 node_offset = fdt_node_offset_by_compatible(blob, 0, compat);
494 if (node_offset < 0) {
495 printf("WARNING: could not find compatible node %s: %s.\n",
496 compat, fdt_strerror(node_offset));
497 return;
498 }
499
500 if (mode) {
501 err = fdt_setprop(blob, node_offset, prop_mode, mode,
502 strlen(mode) + 1);
503 if (err < 0)
504 printf("WARNING: could not set %s for %s: %s.\n",
505 prop_mode, compat, fdt_strerror(err));
506 }
507
508 if (type) {
509 err = fdt_setprop(blob, node_offset, prop_type, type,
510 strlen(type) + 1);
511 if (err < 0)
512 printf("WARNING: could not set %s for %s: %s.\n",
513 prop_type, compat, fdt_strerror(err));
514 }
515 }
516 #endif /* CONFIG_HAS_FSL_DR_USB */
517
518 #if defined(CONFIG_MPC83xx) || defined(CONFIG_MPC85xx)
519 /*
520 * update crypto node properties to a specified revision of the SEC
521 * called with sec_rev == 0 if not on an mpc8xxxE processor
522 */
fdt_fixup_crypto_node(void * blob,int sec_rev)523 void fdt_fixup_crypto_node(void *blob, int sec_rev)
524 {
525 const struct sec_rev_prop {
526 u32 sec_rev;
527 u32 num_channels;
528 u32 channel_fifo_len;
529 u32 exec_units_mask;
530 u32 descriptor_types_mask;
531 } sec_rev_prop_list [] = {
532 { 0x0200, 4, 24, 0x07e, 0x01010ebf }, /* SEC 2.0 */
533 { 0x0201, 4, 24, 0x0fe, 0x012b0ebf }, /* SEC 2.1 */
534 { 0x0202, 1, 24, 0x04c, 0x0122003f }, /* SEC 2.2 */
535 { 0x0204, 4, 24, 0x07e, 0x012b0ebf }, /* SEC 2.4 */
536 { 0x0300, 4, 24, 0x9fe, 0x03ab0ebf }, /* SEC 3.0 */
537 { 0x0301, 4, 24, 0xbfe, 0x03ab0ebf }, /* SEC 3.1 */
538 { 0x0303, 4, 24, 0x97c, 0x03a30abf }, /* SEC 3.3 */
539 };
540 char compat_strlist[ARRAY_SIZE(sec_rev_prop_list) *
541 sizeof("fsl,secX.Y")];
542 int crypto_node, sec_idx, err;
543 char *p;
544 u32 val;
545
546 /* locate crypto node based on lowest common compatible */
547 crypto_node = fdt_node_offset_by_compatible(blob, -1, "fsl,sec2.0");
548 if (crypto_node == -FDT_ERR_NOTFOUND)
549 return;
550
551 /* delete it if not on an E-processor */
552 if (crypto_node > 0 && !sec_rev) {
553 fdt_del_node(blob, crypto_node);
554 return;
555 }
556
557 /* else we got called for possible uprev */
558 for (sec_idx = 0; sec_idx < ARRAY_SIZE(sec_rev_prop_list); sec_idx++)
559 if (sec_rev_prop_list[sec_idx].sec_rev == sec_rev)
560 break;
561
562 if (sec_idx == ARRAY_SIZE(sec_rev_prop_list)) {
563 puts("warning: unknown SEC revision number\n");
564 return;
565 }
566
567 val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].num_channels);
568 err = fdt_setprop(blob, crypto_node, "fsl,num-channels", &val, 4);
569 if (err < 0)
570 printf("WARNING: could not set crypto property: %s\n",
571 fdt_strerror(err));
572
573 val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].descriptor_types_mask);
574 err = fdt_setprop(blob, crypto_node, "fsl,descriptor-types-mask", &val, 4);
575 if (err < 0)
576 printf("WARNING: could not set crypto property: %s\n",
577 fdt_strerror(err));
578
579 val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].exec_units_mask);
580 err = fdt_setprop(blob, crypto_node, "fsl,exec-units-mask", &val, 4);
581 if (err < 0)
582 printf("WARNING: could not set crypto property: %s\n",
583 fdt_strerror(err));
584
585 val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].channel_fifo_len);
586 err = fdt_setprop(blob, crypto_node, "fsl,channel-fifo-len", &val, 4);
587 if (err < 0)
588 printf("WARNING: could not set crypto property: %s\n",
589 fdt_strerror(err));
590
591 val = 0;
592 while (sec_idx >= 0) {
593 p = compat_strlist + val;
594 val += sprintf(p, "fsl,sec%d.%d",
595 (sec_rev_prop_list[sec_idx].sec_rev & 0xff00) >> 8,
596 sec_rev_prop_list[sec_idx].sec_rev & 0x00ff) + 1;
597 sec_idx--;
598 }
599 err = fdt_setprop(blob, crypto_node, "compatible", &compat_strlist, val);
600 if (err < 0)
601 printf("WARNING: could not set crypto property: %s\n",
602 fdt_strerror(err));
603 }
604 #endif /* defined(CONFIG_MPC83xx) || defined(CONFIG_MPC85xx) */
605
606 /* Resize the fdt to its actual size + a bit of padding */
fdt_resize(void * blob)607 int fdt_resize(void *blob)
608 {
609 int i;
610 uint64_t addr, size;
611 int total, ret;
612 uint actualsize;
613
614 if (!blob)
615 return 0;
616
617 total = fdt_num_mem_rsv(blob);
618 for (i = 0; i < total; i++) {
619 fdt_get_mem_rsv(blob, i, &addr, &size);
620 if (addr == (uint64_t)(u32)blob) {
621 fdt_del_mem_rsv(blob, i);
622 break;
623 }
624 }
625
626 /*
627 * Calculate the actual size of the fdt
628 * plus the size needed for two fdt_add_mem_rsv, one
629 * for the fdt itself and one for a possible initrd
630 */
631 actualsize = fdt_off_dt_strings(blob) +
632 fdt_size_dt_strings(blob) + 2*sizeof(struct fdt_reserve_entry);
633
634 /* Make it so the fdt ends on a page boundary */
635 actualsize = ALIGN(actualsize + ((uint)blob & 0xfff), 0x1000);
636 actualsize = actualsize - ((uint)blob & 0xfff);
637
638 /* Change the fdt header to reflect the correct size */
639 fdt_set_totalsize(blob, actualsize);
640
641 /* Add the new reservation */
642 ret = fdt_add_mem_rsv(blob, (uint)blob, actualsize);
643 if (ret < 0)
644 return ret;
645
646 return actualsize;
647 }
648
649 #ifdef CONFIG_PCI
650 #define CONFIG_SYS_PCI_NR_INBOUND_WIN 4
651
652 #define FDT_PCI_PREFETCH (0x40000000)
653 #define FDT_PCI_MEM32 (0x02000000)
654 #define FDT_PCI_IO (0x01000000)
655 #define FDT_PCI_MEM64 (0x03000000)
656
fdt_pci_dma_ranges(void * blob,int phb_off,struct pci_controller * hose)657 int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose) {
658
659 int addrcell, sizecell, len, r;
660 u32 *dma_range;
661 /* sized based on pci addr cells, size-cells, & address-cells */
662 u32 dma_ranges[(3 + 2 + 2) * CONFIG_SYS_PCI_NR_INBOUND_WIN];
663
664 addrcell = fdt_getprop_u32_default(blob, "/", "#address-cells", 1);
665 sizecell = fdt_getprop_u32_default(blob, "/", "#size-cells", 1);
666
667 dma_range = &dma_ranges[0];
668 for (r = 0; r < hose->region_count; r++) {
669 u64 bus_start, phys_start, size;
670
671 /* skip if !PCI_REGION_SYS_MEMORY */
672 if (!(hose->regions[r].flags & PCI_REGION_SYS_MEMORY))
673 continue;
674
675 bus_start = (u64)hose->regions[r].bus_start;
676 phys_start = (u64)hose->regions[r].phys_start;
677 size = (u64)hose->regions[r].size;
678
679 dma_range[0] = 0;
680 if (size >= 0x100000000ull)
681 dma_range[0] |= FDT_PCI_MEM64;
682 else
683 dma_range[0] |= FDT_PCI_MEM32;
684 if (hose->regions[r].flags & PCI_REGION_PREFETCH)
685 dma_range[0] |= FDT_PCI_PREFETCH;
686 #ifdef CONFIG_SYS_PCI_64BIT
687 dma_range[1] = bus_start >> 32;
688 #else
689 dma_range[1] = 0;
690 #endif
691 dma_range[2] = bus_start & 0xffffffff;
692
693 if (addrcell == 2) {
694 dma_range[3] = phys_start >> 32;
695 dma_range[4] = phys_start & 0xffffffff;
696 } else {
697 dma_range[3] = phys_start & 0xffffffff;
698 }
699
700 if (sizecell == 2) {
701 dma_range[3 + addrcell + 0] = size >> 32;
702 dma_range[3 + addrcell + 1] = size & 0xffffffff;
703 } else {
704 dma_range[3 + addrcell + 0] = size & 0xffffffff;
705 }
706
707 dma_range += (3 + addrcell + sizecell);
708 }
709
710 len = dma_range - &dma_ranges[0];
711 if (len)
712 fdt_setprop(blob, phb_off, "dma-ranges", &dma_ranges[0], len*4);
713
714 return 0;
715 }
716 #endif
717
718 #ifdef CONFIG_FDT_FIXUP_NOR_FLASH_SIZE
719 /*
720 * This function can be used to update the size in the "reg" property
721 * of the NOR FLASH device nodes. This is necessary for boards with
722 * non-fixed NOR FLASH sizes.
723 */
fdt_fixup_nor_flash_size(void * blob,int cs,u32 size)724 int fdt_fixup_nor_flash_size(void *blob, int cs, u32 size)
725 {
726 char compat[][16] = { "cfi-flash", "jedec-flash" };
727 int off;
728 int len;
729 struct fdt_property *prop;
730 u32 *reg;
731 int i;
732
733 for (i = 0; i < 2; i++) {
734 off = fdt_node_offset_by_compatible(blob, -1, compat[i]);
735 while (off != -FDT_ERR_NOTFOUND) {
736 /*
737 * Found one compatible node, now check if this one
738 * has the correct CS
739 */
740 prop = fdt_get_property_w(blob, off, "reg", &len);
741 if (prop) {
742 reg = (u32 *)&prop->data[0];
743 if (reg[0] == cs) {
744 reg[2] = size;
745 fdt_setprop(blob, off, "reg", reg,
746 3 * sizeof(u32));
747
748 return 0;
749 }
750 }
751
752 /* Move to next compatible node */
753 off = fdt_node_offset_by_compatible(blob, off,
754 compat[i]);
755 }
756 }
757
758 return -1;
759 }
760 #endif
761
762 #ifdef CONFIG_FDT_FIXUP_PARTITIONS
763 #include <jffs2/load_kernel.h>
764 #include <mtd_node.h>
765
766 struct reg_cell {
767 unsigned int r0;
768 unsigned int r1;
769 };
770
fdt_del_subnodes(const void * blob,int parent_offset)771 int fdt_del_subnodes(const void *blob, int parent_offset)
772 {
773 int off, ndepth;
774 int ret;
775
776 for (ndepth = 0, off = fdt_next_node(blob, parent_offset, &ndepth);
777 (off >= 0) && (ndepth > 0);
778 off = fdt_next_node(blob, off, &ndepth)) {
779 if (ndepth == 1) {
780 debug("delete %s: offset: %x\n",
781 fdt_get_name(blob, off, 0), off);
782 ret = fdt_del_node((void *)blob, off);
783 if (ret < 0) {
784 printf("Can't delete node: %s\n",
785 fdt_strerror(ret));
786 return ret;
787 } else {
788 ndepth = 0;
789 off = parent_offset;
790 }
791 }
792 }
793 return 0;
794 }
795
fdt_increase_size(void * fdt,int add_len)796 int fdt_increase_size(void *fdt, int add_len)
797 {
798 int newlen;
799
800 newlen = fdt_totalsize(fdt) + add_len;
801
802 /* Open in place with a new len */
803 return fdt_open_into(fdt, fdt, newlen);
804 }
805
fdt_del_partitions(void * blob,int parent_offset)806 int fdt_del_partitions(void *blob, int parent_offset)
807 {
808 const void *prop;
809 int ndepth = 0;
810 int off;
811 int ret;
812
813 off = fdt_next_node(blob, parent_offset, &ndepth);
814 if (off > 0 && ndepth == 1) {
815 prop = fdt_getprop(blob, off, "label", NULL);
816 if (prop == NULL) {
817 /*
818 * Could not find label property, nand {}; node?
819 * Check subnode, delete partitions there if any.
820 */
821 return fdt_del_partitions(blob, off);
822 } else {
823 ret = fdt_del_subnodes(blob, parent_offset);
824 if (ret < 0) {
825 printf("Can't remove subnodes: %s\n",
826 fdt_strerror(ret));
827 return ret;
828 }
829 }
830 }
831 return 0;
832 }
833
fdt_node_set_part_info(void * blob,int parent_offset,struct mtd_device * dev)834 int fdt_node_set_part_info(void *blob, int parent_offset,
835 struct mtd_device *dev)
836 {
837 struct list_head *pentry;
838 struct part_info *part;
839 struct reg_cell cell;
840 int off, ndepth = 0;
841 int part_num, ret;
842 char buf[64];
843
844 ret = fdt_del_partitions(blob, parent_offset);
845 if (ret < 0)
846 return ret;
847
848 /*
849 * Check if it is nand {}; subnode, adjust
850 * the offset in this case
851 */
852 off = fdt_next_node(blob, parent_offset, &ndepth);
853 if (off > 0 && ndepth == 1)
854 parent_offset = off;
855
856 part_num = 0;
857 list_for_each_prev(pentry, &dev->parts) {
858 int newoff;
859
860 part = list_entry(pentry, struct part_info, link);
861
862 debug("%2d: %-20s0x%08x\t0x%08x\t%d\n",
863 part_num, part->name, part->size,
864 part->offset, part->mask_flags);
865
866 sprintf(buf, "partition@%x", part->offset);
867 add_sub:
868 ret = fdt_add_subnode(blob, parent_offset, buf);
869 if (ret == -FDT_ERR_NOSPACE) {
870 ret = fdt_increase_size(blob, 512);
871 if (!ret)
872 goto add_sub;
873 else
874 goto err_size;
875 } else if (ret < 0) {
876 printf("Can't add partition node: %s\n",
877 fdt_strerror(ret));
878 return ret;
879 }
880 newoff = ret;
881
882 /* Check MTD_WRITEABLE_CMD flag */
883 if (part->mask_flags & 1) {
884 add_ro:
885 ret = fdt_setprop(blob, newoff, "read_only", NULL, 0);
886 if (ret == -FDT_ERR_NOSPACE) {
887 ret = fdt_increase_size(blob, 512);
888 if (!ret)
889 goto add_ro;
890 else
891 goto err_size;
892 } else if (ret < 0)
893 goto err_prop;
894 }
895
896 cell.r0 = cpu_to_fdt32(part->offset);
897 cell.r1 = cpu_to_fdt32(part->size);
898 add_reg:
899 ret = fdt_setprop(blob, newoff, "reg", &cell, sizeof(cell));
900 if (ret == -FDT_ERR_NOSPACE) {
901 ret = fdt_increase_size(blob, 512);
902 if (!ret)
903 goto add_reg;
904 else
905 goto err_size;
906 } else if (ret < 0)
907 goto err_prop;
908
909 add_label:
910 ret = fdt_setprop_string(blob, newoff, "label", part->name);
911 if (ret == -FDT_ERR_NOSPACE) {
912 ret = fdt_increase_size(blob, 512);
913 if (!ret)
914 goto add_label;
915 else
916 goto err_size;
917 } else if (ret < 0)
918 goto err_prop;
919
920 part_num++;
921 }
922 return 0;
923 err_size:
924 printf("Can't increase blob size: %s\n", fdt_strerror(ret));
925 return ret;
926 err_prop:
927 printf("Can't add property: %s\n", fdt_strerror(ret));
928 return ret;
929 }
930
931 /*
932 * Update partitions in nor/nand nodes using info from
933 * mtdparts environment variable. The nodes to update are
934 * specified by node_info structure which contains mtd device
935 * type and compatible string: E. g. the board code in
936 * ft_board_setup() could use:
937 *
938 * struct node_info nodes[] = {
939 * { "fsl,mpc5121-nfc", MTD_DEV_TYPE_NAND, },
940 * { "cfi-flash", MTD_DEV_TYPE_NOR, },
941 * };
942 *
943 * fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
944 */
fdt_fixup_mtdparts(void * blob,void * node_info,int node_info_size)945 void fdt_fixup_mtdparts(void *blob, void *node_info, int node_info_size)
946 {
947 struct node_info *ni = node_info;
948 struct mtd_device *dev;
949 char *parts;
950 int i, idx;
951 int noff;
952
953 parts = getenv("mtdparts");
954 if (!parts)
955 return;
956
957 if (mtdparts_init() != 0)
958 return;
959
960 for (i = 0; i < node_info_size; i++) {
961 idx = 0;
962 noff = fdt_node_offset_by_compatible(blob, -1, ni[i].compat);
963 while (noff != -FDT_ERR_NOTFOUND) {
964 debug("%s: %s, mtd dev type %d\n",
965 fdt_get_name(blob, noff, 0),
966 ni[i].compat, ni[i].type);
967 dev = device_find(ni[i].type, idx++);
968 if (dev) {
969 if (fdt_node_set_part_info(blob, noff, dev))
970 return; /* return on error */
971 }
972
973 /* Jump to next flash node */
974 noff = fdt_node_offset_by_compatible(blob, noff,
975 ni[i].compat);
976 }
977 }
978 }
979 #endif
980
fdt_del_node_and_alias(void * blob,const char * alias)981 void fdt_del_node_and_alias(void *blob, const char *alias)
982 {
983 int off = fdt_path_offset(blob, alias);
984
985 if (off < 0)
986 return;
987
988 fdt_del_node(blob, off);
989
990 off = fdt_path_offset(blob, "/aliases");
991 fdt_delprop(blob, off, alias);
992 }
993