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 */ 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 */ 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 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 108 static inline void fdt_fill_multisername(char *sername, size_t maxlen) {} 109 #endif /* CONFIG_SERIAL_MULTI */ 110 111 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 148 149 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 } 214 215 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 } 284 285 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 } 300 301 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 } 307 308 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 } 328 329 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 } 336 337 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 } 355 356 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 } 362 363 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 } 440 441 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 /* Resize the fdt to its actual size + a bit of padding */ 478 int fdt_resize(void *blob) 479 { 480 int i; 481 uint64_t addr, size; 482 int total, ret; 483 uint actualsize; 484 485 if (!blob) 486 return 0; 487 488 total = fdt_num_mem_rsv(blob); 489 for (i = 0; i < total; i++) { 490 fdt_get_mem_rsv(blob, i, &addr, &size); 491 if (addr == (uint64_t)(u32)blob) { 492 fdt_del_mem_rsv(blob, i); 493 break; 494 } 495 } 496 497 /* 498 * Calculate the actual size of the fdt 499 * plus the size needed for two fdt_add_mem_rsv, one 500 * for the fdt itself and one for a possible initrd 501 */ 502 actualsize = fdt_off_dt_strings(blob) + 503 fdt_size_dt_strings(blob) + 2*sizeof(struct fdt_reserve_entry); 504 505 /* Make it so the fdt ends on a page boundary */ 506 actualsize = ALIGN(actualsize + ((uint)blob & 0xfff), 0x1000); 507 actualsize = actualsize - ((uint)blob & 0xfff); 508 509 /* Change the fdt header to reflect the correct size */ 510 fdt_set_totalsize(blob, actualsize); 511 512 /* Add the new reservation */ 513 ret = fdt_add_mem_rsv(blob, (uint)blob, actualsize); 514 if (ret < 0) 515 return ret; 516 517 return actualsize; 518 } 519 520 #ifdef CONFIG_PCI 521 #define CONFIG_SYS_PCI_NR_INBOUND_WIN 4 522 523 #define FDT_PCI_PREFETCH (0x40000000) 524 #define FDT_PCI_MEM32 (0x02000000) 525 #define FDT_PCI_IO (0x01000000) 526 #define FDT_PCI_MEM64 (0x03000000) 527 528 int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose) { 529 530 int addrcell, sizecell, len, r; 531 u32 *dma_range; 532 /* sized based on pci addr cells, size-cells, & address-cells */ 533 u32 dma_ranges[(3 + 2 + 2) * CONFIG_SYS_PCI_NR_INBOUND_WIN]; 534 535 addrcell = fdt_getprop_u32_default(blob, "/", "#address-cells", 1); 536 sizecell = fdt_getprop_u32_default(blob, "/", "#size-cells", 1); 537 538 dma_range = &dma_ranges[0]; 539 for (r = 0; r < hose->region_count; r++) { 540 u64 bus_start, phys_start, size; 541 542 /* skip if !PCI_REGION_SYS_MEMORY */ 543 if (!(hose->regions[r].flags & PCI_REGION_SYS_MEMORY)) 544 continue; 545 546 bus_start = (u64)hose->regions[r].bus_start; 547 phys_start = (u64)hose->regions[r].phys_start; 548 size = (u64)hose->regions[r].size; 549 550 dma_range[0] = 0; 551 if (size >= 0x100000000ull) 552 dma_range[0] |= FDT_PCI_MEM64; 553 else 554 dma_range[0] |= FDT_PCI_MEM32; 555 if (hose->regions[r].flags & PCI_REGION_PREFETCH) 556 dma_range[0] |= FDT_PCI_PREFETCH; 557 #ifdef CONFIG_SYS_PCI_64BIT 558 dma_range[1] = bus_start >> 32; 559 #else 560 dma_range[1] = 0; 561 #endif 562 dma_range[2] = bus_start & 0xffffffff; 563 564 if (addrcell == 2) { 565 dma_range[3] = phys_start >> 32; 566 dma_range[4] = phys_start & 0xffffffff; 567 } else { 568 dma_range[3] = phys_start & 0xffffffff; 569 } 570 571 if (sizecell == 2) { 572 dma_range[3 + addrcell + 0] = size >> 32; 573 dma_range[3 + addrcell + 1] = size & 0xffffffff; 574 } else { 575 dma_range[3 + addrcell + 0] = size & 0xffffffff; 576 } 577 578 dma_range += (3 + addrcell + sizecell); 579 } 580 581 len = dma_range - &dma_ranges[0]; 582 if (len) 583 fdt_setprop(blob, phb_off, "dma-ranges", &dma_ranges[0], len*4); 584 585 return 0; 586 } 587 #endif 588 589 #ifdef CONFIG_FDT_FIXUP_NOR_FLASH_SIZE 590 /* 591 * This function can be used to update the size in the "reg" property 592 * of the NOR FLASH device nodes. This is necessary for boards with 593 * non-fixed NOR FLASH sizes. 594 */ 595 int fdt_fixup_nor_flash_size(void *blob, int cs, u32 size) 596 { 597 char compat[][16] = { "cfi-flash", "jedec-flash" }; 598 int off; 599 int len; 600 struct fdt_property *prop; 601 u32 *reg; 602 int i; 603 604 for (i = 0; i < 2; i++) { 605 off = fdt_node_offset_by_compatible(blob, -1, compat[i]); 606 while (off != -FDT_ERR_NOTFOUND) { 607 /* 608 * Found one compatible node, now check if this one 609 * has the correct CS 610 */ 611 prop = fdt_get_property_w(blob, off, "reg", &len); 612 if (prop) { 613 reg = (u32 *)&prop->data[0]; 614 if (reg[0] == cs) { 615 reg[2] = size; 616 fdt_setprop(blob, off, "reg", reg, 617 3 * sizeof(u32)); 618 619 return 0; 620 } 621 } 622 623 /* Move to next compatible node */ 624 off = fdt_node_offset_by_compatible(blob, off, 625 compat[i]); 626 } 627 } 628 629 return -1; 630 } 631 #endif 632 633 #ifdef CONFIG_FDT_FIXUP_PARTITIONS 634 #include <jffs2/load_kernel.h> 635 #include <mtd_node.h> 636 637 struct reg_cell { 638 unsigned int r0; 639 unsigned int r1; 640 }; 641 642 int fdt_del_subnodes(const void *blob, int parent_offset) 643 { 644 int off, ndepth; 645 int ret; 646 647 for (ndepth = 0, off = fdt_next_node(blob, parent_offset, &ndepth); 648 (off >= 0) && (ndepth > 0); 649 off = fdt_next_node(blob, off, &ndepth)) { 650 if (ndepth == 1) { 651 debug("delete %s: offset: %x\n", 652 fdt_get_name(blob, off, 0), off); 653 ret = fdt_del_node((void *)blob, off); 654 if (ret < 0) { 655 printf("Can't delete node: %s\n", 656 fdt_strerror(ret)); 657 return ret; 658 } else { 659 ndepth = 0; 660 off = parent_offset; 661 } 662 } 663 } 664 return 0; 665 } 666 667 int fdt_increase_size(void *fdt, int add_len) 668 { 669 int newlen; 670 671 newlen = fdt_totalsize(fdt) + add_len; 672 673 /* Open in place with a new len */ 674 return fdt_open_into(fdt, fdt, newlen); 675 } 676 677 int fdt_del_partitions(void *blob, int parent_offset) 678 { 679 const void *prop; 680 int ndepth = 0; 681 int off; 682 int ret; 683 684 off = fdt_next_node(blob, parent_offset, &ndepth); 685 if (off > 0 && ndepth == 1) { 686 prop = fdt_getprop(blob, off, "label", NULL); 687 if (prop == NULL) { 688 /* 689 * Could not find label property, nand {}; node? 690 * Check subnode, delete partitions there if any. 691 */ 692 return fdt_del_partitions(blob, off); 693 } else { 694 ret = fdt_del_subnodes(blob, parent_offset); 695 if (ret < 0) { 696 printf("Can't remove subnodes: %s\n", 697 fdt_strerror(ret)); 698 return ret; 699 } 700 } 701 } 702 return 0; 703 } 704 705 int fdt_node_set_part_info(void *blob, int parent_offset, 706 struct mtd_device *dev) 707 { 708 struct list_head *pentry; 709 struct part_info *part; 710 struct reg_cell cell; 711 int off, ndepth = 0; 712 int part_num, ret; 713 char buf[64]; 714 715 ret = fdt_del_partitions(blob, parent_offset); 716 if (ret < 0) 717 return ret; 718 719 /* 720 * Check if it is nand {}; subnode, adjust 721 * the offset in this case 722 */ 723 off = fdt_next_node(blob, parent_offset, &ndepth); 724 if (off > 0 && ndepth == 1) 725 parent_offset = off; 726 727 part_num = 0; 728 list_for_each_prev(pentry, &dev->parts) { 729 int newoff; 730 731 part = list_entry(pentry, struct part_info, link); 732 733 debug("%2d: %-20s0x%08x\t0x%08x\t%d\n", 734 part_num, part->name, part->size, 735 part->offset, part->mask_flags); 736 737 sprintf(buf, "partition@%x", part->offset); 738 add_sub: 739 ret = fdt_add_subnode(blob, parent_offset, buf); 740 if (ret == -FDT_ERR_NOSPACE) { 741 ret = fdt_increase_size(blob, 512); 742 if (!ret) 743 goto add_sub; 744 else 745 goto err_size; 746 } else if (ret < 0) { 747 printf("Can't add partition node: %s\n", 748 fdt_strerror(ret)); 749 return ret; 750 } 751 newoff = ret; 752 753 /* Check MTD_WRITEABLE_CMD flag */ 754 if (part->mask_flags & 1) { 755 add_ro: 756 ret = fdt_setprop(blob, newoff, "read_only", NULL, 0); 757 if (ret == -FDT_ERR_NOSPACE) { 758 ret = fdt_increase_size(blob, 512); 759 if (!ret) 760 goto add_ro; 761 else 762 goto err_size; 763 } else if (ret < 0) 764 goto err_prop; 765 } 766 767 cell.r0 = cpu_to_fdt32(part->offset); 768 cell.r1 = cpu_to_fdt32(part->size); 769 add_reg: 770 ret = fdt_setprop(blob, newoff, "reg", &cell, sizeof(cell)); 771 if (ret == -FDT_ERR_NOSPACE) { 772 ret = fdt_increase_size(blob, 512); 773 if (!ret) 774 goto add_reg; 775 else 776 goto err_size; 777 } else if (ret < 0) 778 goto err_prop; 779 780 add_label: 781 ret = fdt_setprop_string(blob, newoff, "label", part->name); 782 if (ret == -FDT_ERR_NOSPACE) { 783 ret = fdt_increase_size(blob, 512); 784 if (!ret) 785 goto add_label; 786 else 787 goto err_size; 788 } else if (ret < 0) 789 goto err_prop; 790 791 part_num++; 792 } 793 return 0; 794 err_size: 795 printf("Can't increase blob size: %s\n", fdt_strerror(ret)); 796 return ret; 797 err_prop: 798 printf("Can't add property: %s\n", fdt_strerror(ret)); 799 return ret; 800 } 801 802 /* 803 * Update partitions in nor/nand nodes using info from 804 * mtdparts environment variable. The nodes to update are 805 * specified by node_info structure which contains mtd device 806 * type and compatible string: E. g. the board code in 807 * ft_board_setup() could use: 808 * 809 * struct node_info nodes[] = { 810 * { "fsl,mpc5121-nfc", MTD_DEV_TYPE_NAND, }, 811 * { "cfi-flash", MTD_DEV_TYPE_NOR, }, 812 * }; 813 * 814 * fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes)); 815 */ 816 void fdt_fixup_mtdparts(void *blob, void *node_info, int node_info_size) 817 { 818 struct node_info *ni = node_info; 819 struct mtd_device *dev; 820 char *parts; 821 int i, idx; 822 int noff; 823 824 parts = getenv("mtdparts"); 825 if (!parts) 826 return; 827 828 if (mtdparts_init() != 0) 829 return; 830 831 for (i = 0; i < node_info_size; i++) { 832 idx = 0; 833 noff = fdt_node_offset_by_compatible(blob, -1, ni[i].compat); 834 while (noff != -FDT_ERR_NOTFOUND) { 835 debug("%s: %s, mtd dev type %d\n", 836 fdt_get_name(blob, noff, 0), 837 ni[i].compat, ni[i].type); 838 dev = device_find(ni[i].type, idx++); 839 if (dev) { 840 if (fdt_node_set_part_info(blob, noff, dev)) 841 return; /* return on error */ 842 } 843 844 /* Jump to next flash node */ 845 noff = fdt_node_offset_by_compatible(blob, noff, 846 ni[i].compat); 847 } 848 } 849 } 850 #endif 851 852 void fdt_del_node_and_alias(void *blob, const char *alias) 853 { 854 int off = fdt_path_offset(blob, alias); 855 856 if (off < 0) 857 return; 858 859 fdt_del_node(blob, off); 860 861 off = fdt_path_offset(blob, "/aliases"); 862 fdt_delprop(blob, off, alias); 863 } 864