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 #ifdef CONFIG_HAS_FSL_DR_USB 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 */ 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 { 0x0303, 4, 24, 0x97c, 0x03ab0abf }, /* SEC 3.3 */ 538 }; 539 char compat_strlist[ARRAY_SIZE(sec_rev_prop_list) * 540 sizeof("fsl,secX.Y")]; 541 int crypto_node, sec_idx, err; 542 char *p; 543 u32 val; 544 545 /* locate crypto node based on lowest common compatible */ 546 crypto_node = fdt_node_offset_by_compatible(blob, -1, "fsl,sec2.0"); 547 if (crypto_node == -FDT_ERR_NOTFOUND) 548 return; 549 550 /* delete it if not on an E-processor */ 551 if (crypto_node > 0 && !sec_rev) { 552 fdt_del_node(blob, crypto_node); 553 return; 554 } 555 556 /* else we got called for possible uprev */ 557 for (sec_idx = 0; sec_idx < ARRAY_SIZE(sec_rev_prop_list); sec_idx++) 558 if (sec_rev_prop_list[sec_idx].sec_rev == sec_rev) 559 break; 560 561 if (sec_idx == ARRAY_SIZE(sec_rev_prop_list)) { 562 puts("warning: unknown SEC revision number\n"); 563 return; 564 } 565 566 val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].num_channels); 567 err = fdt_setprop(blob, crypto_node, "fsl,num-channels", &val, 4); 568 if (err < 0) 569 printf("WARNING: could not set crypto property: %s\n", 570 fdt_strerror(err)); 571 572 val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].descriptor_types_mask); 573 err = fdt_setprop(blob, crypto_node, "fsl,descriptor-types-mask", &val, 4); 574 if (err < 0) 575 printf("WARNING: could not set crypto property: %s\n", 576 fdt_strerror(err)); 577 578 val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].exec_units_mask); 579 err = fdt_setprop(blob, crypto_node, "fsl,exec-units-mask", &val, 4); 580 if (err < 0) 581 printf("WARNING: could not set crypto property: %s\n", 582 fdt_strerror(err)); 583 584 val = cpu_to_fdt32(sec_rev_prop_list[sec_idx].channel_fifo_len); 585 err = fdt_setprop(blob, crypto_node, "fsl,channel-fifo-len", &val, 4); 586 if (err < 0) 587 printf("WARNING: could not set crypto property: %s\n", 588 fdt_strerror(err)); 589 590 val = 0; 591 while (sec_idx >= 0) { 592 p = compat_strlist + val; 593 val += sprintf(p, "fsl,sec%d.%d", 594 (sec_rev_prop_list[sec_idx].sec_rev & 0xff00) >> 8, 595 sec_rev_prop_list[sec_idx].sec_rev & 0x00ff) + 1; 596 sec_idx--; 597 } 598 err = fdt_setprop(blob, crypto_node, "compatible", &compat_strlist, val); 599 if (err < 0) 600 printf("WARNING: could not set crypto property: %s\n", 601 fdt_strerror(err)); 602 } 603 #endif /* defined(CONFIG_MPC83xx) || defined(CONFIG_MPC85xx) */ 604 605 /* Resize the fdt to its actual size + a bit of padding */ 606 int fdt_resize(void *blob) 607 { 608 int i; 609 uint64_t addr, size; 610 int total, ret; 611 uint actualsize; 612 613 if (!blob) 614 return 0; 615 616 total = fdt_num_mem_rsv(blob); 617 for (i = 0; i < total; i++) { 618 fdt_get_mem_rsv(blob, i, &addr, &size); 619 if (addr == (uint64_t)(u32)blob) { 620 fdt_del_mem_rsv(blob, i); 621 break; 622 } 623 } 624 625 /* 626 * Calculate the actual size of the fdt 627 * plus the size needed for two fdt_add_mem_rsv, one 628 * for the fdt itself and one for a possible initrd 629 */ 630 actualsize = fdt_off_dt_strings(blob) + 631 fdt_size_dt_strings(blob) + 2*sizeof(struct fdt_reserve_entry); 632 633 /* Make it so the fdt ends on a page boundary */ 634 actualsize = ALIGN(actualsize + ((uint)blob & 0xfff), 0x1000); 635 actualsize = actualsize - ((uint)blob & 0xfff); 636 637 /* Change the fdt header to reflect the correct size */ 638 fdt_set_totalsize(blob, actualsize); 639 640 /* Add the new reservation */ 641 ret = fdt_add_mem_rsv(blob, (uint)blob, actualsize); 642 if (ret < 0) 643 return ret; 644 645 return actualsize; 646 } 647 648 #ifdef CONFIG_PCI 649 #define CONFIG_SYS_PCI_NR_INBOUND_WIN 4 650 651 #define FDT_PCI_PREFETCH (0x40000000) 652 #define FDT_PCI_MEM32 (0x02000000) 653 #define FDT_PCI_IO (0x01000000) 654 #define FDT_PCI_MEM64 (0x03000000) 655 656 int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose) { 657 658 int addrcell, sizecell, len, r; 659 u32 *dma_range; 660 /* sized based on pci addr cells, size-cells, & address-cells */ 661 u32 dma_ranges[(3 + 2 + 2) * CONFIG_SYS_PCI_NR_INBOUND_WIN]; 662 663 addrcell = fdt_getprop_u32_default(blob, "/", "#address-cells", 1); 664 sizecell = fdt_getprop_u32_default(blob, "/", "#size-cells", 1); 665 666 dma_range = &dma_ranges[0]; 667 for (r = 0; r < hose->region_count; r++) { 668 u64 bus_start, phys_start, size; 669 670 /* skip if !PCI_REGION_SYS_MEMORY */ 671 if (!(hose->regions[r].flags & PCI_REGION_SYS_MEMORY)) 672 continue; 673 674 bus_start = (u64)hose->regions[r].bus_start; 675 phys_start = (u64)hose->regions[r].phys_start; 676 size = (u64)hose->regions[r].size; 677 678 dma_range[0] = 0; 679 if (size >= 0x100000000ull) 680 dma_range[0] |= FDT_PCI_MEM64; 681 else 682 dma_range[0] |= FDT_PCI_MEM32; 683 if (hose->regions[r].flags & PCI_REGION_PREFETCH) 684 dma_range[0] |= FDT_PCI_PREFETCH; 685 #ifdef CONFIG_SYS_PCI_64BIT 686 dma_range[1] = bus_start >> 32; 687 #else 688 dma_range[1] = 0; 689 #endif 690 dma_range[2] = bus_start & 0xffffffff; 691 692 if (addrcell == 2) { 693 dma_range[3] = phys_start >> 32; 694 dma_range[4] = phys_start & 0xffffffff; 695 } else { 696 dma_range[3] = phys_start & 0xffffffff; 697 } 698 699 if (sizecell == 2) { 700 dma_range[3 + addrcell + 0] = size >> 32; 701 dma_range[3 + addrcell + 1] = size & 0xffffffff; 702 } else { 703 dma_range[3 + addrcell + 0] = size & 0xffffffff; 704 } 705 706 dma_range += (3 + addrcell + sizecell); 707 } 708 709 len = dma_range - &dma_ranges[0]; 710 if (len) 711 fdt_setprop(blob, phb_off, "dma-ranges", &dma_ranges[0], len*4); 712 713 return 0; 714 } 715 #endif 716 717 #ifdef CONFIG_FDT_FIXUP_NOR_FLASH_SIZE 718 /* 719 * This function can be used to update the size in the "reg" property 720 * of the NOR FLASH device nodes. This is necessary for boards with 721 * non-fixed NOR FLASH sizes. 722 */ 723 int fdt_fixup_nor_flash_size(void *blob, int cs, u32 size) 724 { 725 char compat[][16] = { "cfi-flash", "jedec-flash" }; 726 int off; 727 int len; 728 struct fdt_property *prop; 729 u32 *reg; 730 int i; 731 732 for (i = 0; i < 2; i++) { 733 off = fdt_node_offset_by_compatible(blob, -1, compat[i]); 734 while (off != -FDT_ERR_NOTFOUND) { 735 /* 736 * Found one compatible node, now check if this one 737 * has the correct CS 738 */ 739 prop = fdt_get_property_w(blob, off, "reg", &len); 740 if (prop) { 741 reg = (u32 *)&prop->data[0]; 742 if (reg[0] == cs) { 743 reg[2] = size; 744 fdt_setprop(blob, off, "reg", reg, 745 3 * sizeof(u32)); 746 747 return 0; 748 } 749 } 750 751 /* Move to next compatible node */ 752 off = fdt_node_offset_by_compatible(blob, off, 753 compat[i]); 754 } 755 } 756 757 return -1; 758 } 759 #endif 760 761 #ifdef CONFIG_FDT_FIXUP_PARTITIONS 762 #include <jffs2/load_kernel.h> 763 #include <mtd_node.h> 764 765 struct reg_cell { 766 unsigned int r0; 767 unsigned int r1; 768 }; 769 770 int fdt_del_subnodes(const void *blob, int parent_offset) 771 { 772 int off, ndepth; 773 int ret; 774 775 for (ndepth = 0, off = fdt_next_node(blob, parent_offset, &ndepth); 776 (off >= 0) && (ndepth > 0); 777 off = fdt_next_node(blob, off, &ndepth)) { 778 if (ndepth == 1) { 779 debug("delete %s: offset: %x\n", 780 fdt_get_name(blob, off, 0), off); 781 ret = fdt_del_node((void *)blob, off); 782 if (ret < 0) { 783 printf("Can't delete node: %s\n", 784 fdt_strerror(ret)); 785 return ret; 786 } else { 787 ndepth = 0; 788 off = parent_offset; 789 } 790 } 791 } 792 return 0; 793 } 794 795 int fdt_increase_size(void *fdt, int add_len) 796 { 797 int newlen; 798 799 newlen = fdt_totalsize(fdt) + add_len; 800 801 /* Open in place with a new len */ 802 return fdt_open_into(fdt, fdt, newlen); 803 } 804 805 int fdt_del_partitions(void *blob, int parent_offset) 806 { 807 const void *prop; 808 int ndepth = 0; 809 int off; 810 int ret; 811 812 off = fdt_next_node(blob, parent_offset, &ndepth); 813 if (off > 0 && ndepth == 1) { 814 prop = fdt_getprop(blob, off, "label", NULL); 815 if (prop == NULL) { 816 /* 817 * Could not find label property, nand {}; node? 818 * Check subnode, delete partitions there if any. 819 */ 820 return fdt_del_partitions(blob, off); 821 } else { 822 ret = fdt_del_subnodes(blob, parent_offset); 823 if (ret < 0) { 824 printf("Can't remove subnodes: %s\n", 825 fdt_strerror(ret)); 826 return ret; 827 } 828 } 829 } 830 return 0; 831 } 832 833 int fdt_node_set_part_info(void *blob, int parent_offset, 834 struct mtd_device *dev) 835 { 836 struct list_head *pentry; 837 struct part_info *part; 838 struct reg_cell cell; 839 int off, ndepth = 0; 840 int part_num, ret; 841 char buf[64]; 842 843 ret = fdt_del_partitions(blob, parent_offset); 844 if (ret < 0) 845 return ret; 846 847 /* 848 * Check if it is nand {}; subnode, adjust 849 * the offset in this case 850 */ 851 off = fdt_next_node(blob, parent_offset, &ndepth); 852 if (off > 0 && ndepth == 1) 853 parent_offset = off; 854 855 part_num = 0; 856 list_for_each_prev(pentry, &dev->parts) { 857 int newoff; 858 859 part = list_entry(pentry, struct part_info, link); 860 861 debug("%2d: %-20s0x%08x\t0x%08x\t%d\n", 862 part_num, part->name, part->size, 863 part->offset, part->mask_flags); 864 865 sprintf(buf, "partition@%x", part->offset); 866 add_sub: 867 ret = fdt_add_subnode(blob, parent_offset, buf); 868 if (ret == -FDT_ERR_NOSPACE) { 869 ret = fdt_increase_size(blob, 512); 870 if (!ret) 871 goto add_sub; 872 else 873 goto err_size; 874 } else if (ret < 0) { 875 printf("Can't add partition node: %s\n", 876 fdt_strerror(ret)); 877 return ret; 878 } 879 newoff = ret; 880 881 /* Check MTD_WRITEABLE_CMD flag */ 882 if (part->mask_flags & 1) { 883 add_ro: 884 ret = fdt_setprop(blob, newoff, "read_only", NULL, 0); 885 if (ret == -FDT_ERR_NOSPACE) { 886 ret = fdt_increase_size(blob, 512); 887 if (!ret) 888 goto add_ro; 889 else 890 goto err_size; 891 } else if (ret < 0) 892 goto err_prop; 893 } 894 895 cell.r0 = cpu_to_fdt32(part->offset); 896 cell.r1 = cpu_to_fdt32(part->size); 897 add_reg: 898 ret = fdt_setprop(blob, newoff, "reg", &cell, sizeof(cell)); 899 if (ret == -FDT_ERR_NOSPACE) { 900 ret = fdt_increase_size(blob, 512); 901 if (!ret) 902 goto add_reg; 903 else 904 goto err_size; 905 } else if (ret < 0) 906 goto err_prop; 907 908 add_label: 909 ret = fdt_setprop_string(blob, newoff, "label", part->name); 910 if (ret == -FDT_ERR_NOSPACE) { 911 ret = fdt_increase_size(blob, 512); 912 if (!ret) 913 goto add_label; 914 else 915 goto err_size; 916 } else if (ret < 0) 917 goto err_prop; 918 919 part_num++; 920 } 921 return 0; 922 err_size: 923 printf("Can't increase blob size: %s\n", fdt_strerror(ret)); 924 return ret; 925 err_prop: 926 printf("Can't add property: %s\n", fdt_strerror(ret)); 927 return ret; 928 } 929 930 /* 931 * Update partitions in nor/nand nodes using info from 932 * mtdparts environment variable. The nodes to update are 933 * specified by node_info structure which contains mtd device 934 * type and compatible string: E. g. the board code in 935 * ft_board_setup() could use: 936 * 937 * struct node_info nodes[] = { 938 * { "fsl,mpc5121-nfc", MTD_DEV_TYPE_NAND, }, 939 * { "cfi-flash", MTD_DEV_TYPE_NOR, }, 940 * }; 941 * 942 * fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes)); 943 */ 944 void fdt_fixup_mtdparts(void *blob, void *node_info, int node_info_size) 945 { 946 struct node_info *ni = node_info; 947 struct mtd_device *dev; 948 char *parts; 949 int i, idx; 950 int noff; 951 952 parts = getenv("mtdparts"); 953 if (!parts) 954 return; 955 956 if (mtdparts_init() != 0) 957 return; 958 959 for (i = 0; i < node_info_size; i++) { 960 idx = 0; 961 noff = fdt_node_offset_by_compatible(blob, -1, ni[i].compat); 962 while (noff != -FDT_ERR_NOTFOUND) { 963 debug("%s: %s, mtd dev type %d\n", 964 fdt_get_name(blob, noff, 0), 965 ni[i].compat, ni[i].type); 966 dev = device_find(ni[i].type, idx++); 967 if (dev) { 968 if (fdt_node_set_part_info(blob, noff, dev)) 969 return; /* return on error */ 970 } 971 972 /* Jump to next flash node */ 973 noff = fdt_node_offset_by_compatible(blob, noff, 974 ni[i].compat); 975 } 976 } 977 } 978 #endif 979 980 void fdt_del_node_and_alias(void *blob, const char *alias) 981 { 982 int off = fdt_path_offset(blob, alias); 983 984 if (off < 0) 985 return; 986 987 fdt_del_node(blob, off); 988 989 off = fdt_path_offset(blob, "/aliases"); 990 fdt_delprop(blob, off, alias); 991 } 992