1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (c) 2011 The Chromium OS Authors. 4 */ 5 6 #ifndef USE_HOSTCC 7 #include <common.h> 8 #include <boot_fit.h> 9 #include <dm.h> 10 #include <dm/of_extra.h> 11 #include <errno.h> 12 #include <fdtdec.h> 13 #include <fdt_support.h> 14 #include <inttypes.h> 15 #include <linux/libfdt.h> 16 #include <serial.h> 17 #include <asm/sections.h> 18 #include <linux/ctype.h> 19 #include <linux/lzo.h> 20 21 DECLARE_GLOBAL_DATA_PTR; 22 23 /* 24 * Here are the type we know about. One day we might allow drivers to 25 * register. For now we just put them here. The COMPAT macro allows us to 26 * turn this into a sparse list later, and keeps the ID with the name. 27 * 28 * NOTE: This list is basically a TODO list for things that need to be 29 * converted to driver model. So don't add new things here unless there is a 30 * good reason why driver-model conversion is infeasible. Examples include 31 * things which are used before driver model is available. 32 */ 33 #define COMPAT(id, name) name 34 static const char * const compat_names[COMPAT_COUNT] = { 35 COMPAT(UNKNOWN, "<none>"), 36 COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"), 37 COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"), 38 COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"), 39 COMPAT(NVIDIA_TEGRA124_XUSB_PADCTL, "nvidia,tegra124-xusb-padctl"), 40 COMPAT(NVIDIA_TEGRA210_XUSB_PADCTL, "nvidia,tegra210-xusb-padctl"), 41 COMPAT(SMSC_LAN9215, "smsc,lan9215"), 42 COMPAT(SAMSUNG_EXYNOS5_SROMC, "samsung,exynos-sromc"), 43 COMPAT(SAMSUNG_S3C2440_I2C, "samsung,s3c2440-i2c"), 44 COMPAT(SAMSUNG_EXYNOS5_SOUND, "samsung,exynos-sound"), 45 COMPAT(WOLFSON_WM8994_CODEC, "wolfson,wm8994-codec"), 46 COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"), 47 COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"), 48 COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"), 49 COMPAT(SAMSUNG_EXYNOS_MIPI_DSI, "samsung,exynos-mipi-dsi"), 50 COMPAT(SAMSUNG_EXYNOS_DWMMC, "samsung,exynos-dwmmc"), 51 COMPAT(SAMSUNG_EXYNOS_MMC, "samsung,exynos-mmc"), 52 COMPAT(GENERIC_SPI_FLASH, "spi-flash"), 53 COMPAT(MAXIM_98095_CODEC, "maxim,max98095-codec"), 54 COMPAT(SAMSUNG_EXYNOS5_I2C, "samsung,exynos5-hsi2c"), 55 COMPAT(SAMSUNG_EXYNOS_SYSMMU, "samsung,sysmmu-v3.3"), 56 COMPAT(INTEL_MICROCODE, "intel,microcode"), 57 COMPAT(AMS_AS3722, "ams,as3722"), 58 COMPAT(INTEL_QRK_MRC, "intel,quark-mrc"), 59 COMPAT(ALTERA_SOCFPGA_DWMAC, "altr,socfpga-stmmac"), 60 COMPAT(ALTERA_SOCFPGA_DWMMC, "altr,socfpga-dw-mshc"), 61 COMPAT(ALTERA_SOCFPGA_DWC2USB, "snps,dwc2"), 62 COMPAT(INTEL_BAYTRAIL_FSP, "intel,baytrail-fsp"), 63 COMPAT(INTEL_BAYTRAIL_FSP_MDP, "intel,baytrail-fsp-mdp"), 64 COMPAT(INTEL_IVYBRIDGE_FSP, "intel,ivybridge-fsp"), 65 COMPAT(COMPAT_SUNXI_NAND, "allwinner,sun4i-a10-nand"), 66 COMPAT(ALTERA_SOCFPGA_CLK, "altr,clk-mgr"), 67 COMPAT(ALTERA_SOCFPGA_PINCTRL_SINGLE, "pinctrl-single"), 68 COMPAT(ALTERA_SOCFPGA_H2F_BRG, "altr,socfpga-hps2fpga-bridge"), 69 COMPAT(ALTERA_SOCFPGA_LWH2F_BRG, "altr,socfpga-lwhps2fpga-bridge"), 70 COMPAT(ALTERA_SOCFPGA_F2H_BRG, "altr,socfpga-fpga2hps-bridge"), 71 COMPAT(ALTERA_SOCFPGA_F2SDR0, "altr,socfpga-fpga2sdram0-bridge"), 72 COMPAT(ALTERA_SOCFPGA_F2SDR1, "altr,socfpga-fpga2sdram1-bridge"), 73 COMPAT(ALTERA_SOCFPGA_F2SDR2, "altr,socfpga-fpga2sdram2-bridge"), 74 COMPAT(ALTERA_SOCFPGA_FPGA0, "altr,socfpga-a10-fpga-mgr"), 75 COMPAT(ALTERA_SOCFPGA_NOC, "altr,socfpga-a10-noc"), 76 COMPAT(ALTERA_SOCFPGA_CLK_INIT, "altr,socfpga-a10-clk-init") 77 }; 78 79 const char *fdtdec_get_compatible(enum fdt_compat_id id) 80 { 81 /* We allow reading of the 'unknown' ID for testing purposes */ 82 assert(id >= 0 && id < COMPAT_COUNT); 83 return compat_names[id]; 84 } 85 86 fdt_addr_t fdtdec_get_addr_size_fixed(const void *blob, int node, 87 const char *prop_name, int index, int na, 88 int ns, fdt_size_t *sizep, 89 bool translate) 90 { 91 const fdt32_t *prop, *prop_end; 92 const fdt32_t *prop_addr, *prop_size, *prop_after_size; 93 int len; 94 fdt_addr_t addr; 95 96 debug("%s: %s: ", __func__, prop_name); 97 98 if (na > (sizeof(fdt_addr_t) / sizeof(fdt32_t))) { 99 debug("(na too large for fdt_addr_t type)\n"); 100 return FDT_ADDR_T_NONE; 101 } 102 103 if (ns > (sizeof(fdt_size_t) / sizeof(fdt32_t))) { 104 debug("(ns too large for fdt_size_t type)\n"); 105 return FDT_ADDR_T_NONE; 106 } 107 108 prop = fdt_getprop(blob, node, prop_name, &len); 109 if (!prop) { 110 debug("(not found)\n"); 111 return FDT_ADDR_T_NONE; 112 } 113 prop_end = prop + (len / sizeof(*prop)); 114 115 prop_addr = prop + (index * (na + ns)); 116 prop_size = prop_addr + na; 117 prop_after_size = prop_size + ns; 118 if (prop_after_size > prop_end) { 119 debug("(not enough data: expected >= %d cells, got %d cells)\n", 120 (u32)(prop_after_size - prop), ((u32)(prop_end - prop))); 121 return FDT_ADDR_T_NONE; 122 } 123 124 #if CONFIG_IS_ENABLED(OF_TRANSLATE) 125 if (translate) 126 addr = fdt_translate_address(blob, node, prop_addr); 127 else 128 #endif 129 addr = fdtdec_get_number(prop_addr, na); 130 131 if (sizep) { 132 *sizep = fdtdec_get_number(prop_size, ns); 133 debug("addr=%08llx, size=%llx\n", (unsigned long long)addr, 134 (unsigned long long)*sizep); 135 } else { 136 debug("addr=%08llx\n", (unsigned long long)addr); 137 } 138 139 return addr; 140 } 141 142 fdt_addr_t fdtdec_get_addr_size_auto_parent(const void *blob, int parent, 143 int node, const char *prop_name, 144 int index, fdt_size_t *sizep, 145 bool translate) 146 { 147 int na, ns; 148 149 debug("%s: ", __func__); 150 151 na = fdt_address_cells(blob, parent); 152 if (na < 1) { 153 debug("(bad #address-cells)\n"); 154 return FDT_ADDR_T_NONE; 155 } 156 157 ns = fdt_size_cells(blob, parent); 158 if (ns < 0) { 159 debug("(bad #size-cells)\n"); 160 return FDT_ADDR_T_NONE; 161 } 162 163 debug("na=%d, ns=%d, ", na, ns); 164 165 return fdtdec_get_addr_size_fixed(blob, node, prop_name, index, na, 166 ns, sizep, translate); 167 } 168 169 fdt_addr_t fdtdec_get_addr_size_auto_noparent(const void *blob, int node, 170 const char *prop_name, int index, 171 fdt_size_t *sizep, 172 bool translate) 173 { 174 int parent; 175 176 debug("%s: ", __func__); 177 178 parent = fdt_parent_offset(blob, node); 179 if (parent < 0) { 180 debug("(no parent found)\n"); 181 return FDT_ADDR_T_NONE; 182 } 183 184 return fdtdec_get_addr_size_auto_parent(blob, parent, node, prop_name, 185 index, sizep, translate); 186 } 187 188 fdt_addr_t fdtdec_get_addr_size(const void *blob, int node, 189 const char *prop_name, fdt_size_t *sizep) 190 { 191 int ns = sizep ? (sizeof(fdt_size_t) / sizeof(fdt32_t)) : 0; 192 193 return fdtdec_get_addr_size_fixed(blob, node, prop_name, 0, 194 sizeof(fdt_addr_t) / sizeof(fdt32_t), 195 ns, sizep, false); 196 } 197 198 fdt_addr_t fdtdec_get_addr(const void *blob, int node, const char *prop_name) 199 { 200 return fdtdec_get_addr_size(blob, node, prop_name, NULL); 201 } 202 203 #if defined(CONFIG_PCI) && defined(CONFIG_DM_PCI) 204 int fdtdec_get_pci_addr(const void *blob, int node, enum fdt_pci_space type, 205 const char *prop_name, struct fdt_pci_addr *addr) 206 { 207 const u32 *cell; 208 int len; 209 int ret = -ENOENT; 210 211 debug("%s: %s: ", __func__, prop_name); 212 213 /* 214 * If we follow the pci bus bindings strictly, we should check 215 * the value of the node's parent node's #address-cells and 216 * #size-cells. They need to be 3 and 2 accordingly. However, 217 * for simplicity we skip the check here. 218 */ 219 cell = fdt_getprop(blob, node, prop_name, &len); 220 if (!cell) 221 goto fail; 222 223 if ((len % FDT_PCI_REG_SIZE) == 0) { 224 int num = len / FDT_PCI_REG_SIZE; 225 int i; 226 227 for (i = 0; i < num; i++) { 228 debug("pci address #%d: %08lx %08lx %08lx\n", i, 229 (ulong)fdt32_to_cpu(cell[0]), 230 (ulong)fdt32_to_cpu(cell[1]), 231 (ulong)fdt32_to_cpu(cell[2])); 232 if ((fdt32_to_cpu(*cell) & type) == type) { 233 addr->phys_hi = fdt32_to_cpu(cell[0]); 234 addr->phys_mid = fdt32_to_cpu(cell[1]); 235 addr->phys_lo = fdt32_to_cpu(cell[1]); 236 break; 237 } 238 239 cell += (FDT_PCI_ADDR_CELLS + 240 FDT_PCI_SIZE_CELLS); 241 } 242 243 if (i == num) { 244 ret = -ENXIO; 245 goto fail; 246 } 247 248 return 0; 249 } 250 251 ret = -EINVAL; 252 253 fail: 254 debug("(not found)\n"); 255 return ret; 256 } 257 258 int fdtdec_get_pci_vendev(const void *blob, int node, u16 *vendor, u16 *device) 259 { 260 const char *list, *end; 261 int len; 262 263 list = fdt_getprop(blob, node, "compatible", &len); 264 if (!list) 265 return -ENOENT; 266 267 end = list + len; 268 while (list < end) { 269 len = strlen(list); 270 if (len >= strlen("pciVVVV,DDDD")) { 271 char *s = strstr(list, "pci"); 272 273 /* 274 * check if the string is something like pciVVVV,DDDD.RR 275 * or just pciVVVV,DDDD 276 */ 277 if (s && s[7] == ',' && 278 (s[12] == '.' || s[12] == 0)) { 279 s += 3; 280 *vendor = simple_strtol(s, NULL, 16); 281 282 s += 5; 283 *device = simple_strtol(s, NULL, 16); 284 285 return 0; 286 } 287 } 288 list += (len + 1); 289 } 290 291 return -ENOENT; 292 } 293 294 int fdtdec_get_pci_bar32(struct udevice *dev, struct fdt_pci_addr *addr, 295 u32 *bar) 296 { 297 int barnum; 298 299 /* extract the bar number from fdt_pci_addr */ 300 barnum = addr->phys_hi & 0xff; 301 if (barnum < PCI_BASE_ADDRESS_0 || barnum > PCI_CARDBUS_CIS) 302 return -EINVAL; 303 304 barnum = (barnum - PCI_BASE_ADDRESS_0) / 4; 305 *bar = dm_pci_read_bar32(dev, barnum); 306 307 return 0; 308 } 309 #endif 310 311 uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name, 312 uint64_t default_val) 313 { 314 const uint64_t *cell64; 315 int length; 316 317 cell64 = fdt_getprop(blob, node, prop_name, &length); 318 if (!cell64 || length < sizeof(*cell64)) 319 return default_val; 320 321 return fdt64_to_cpu(*cell64); 322 } 323 324 int fdtdec_get_is_enabled(const void *blob, int node) 325 { 326 const char *cell; 327 328 /* 329 * It should say "okay", so only allow that. Some fdts use "ok" but 330 * this is a bug. Please fix your device tree source file. See here 331 * for discussion: 332 * 333 * http://www.mail-archive.com/u-boot@lists.denx.de/msg71598.html 334 */ 335 cell = fdt_getprop(blob, node, "status", NULL); 336 if (cell) 337 return strcmp(cell, "okay") == 0; 338 return 1; 339 } 340 341 enum fdt_compat_id fdtdec_lookup(const void *blob, int node) 342 { 343 enum fdt_compat_id id; 344 345 /* Search our drivers */ 346 for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++) 347 if (fdt_node_check_compatible(blob, node, 348 compat_names[id]) == 0) 349 return id; 350 return COMPAT_UNKNOWN; 351 } 352 353 int fdtdec_next_compatible(const void *blob, int node, enum fdt_compat_id id) 354 { 355 return fdt_node_offset_by_compatible(blob, node, compat_names[id]); 356 } 357 358 int fdtdec_next_compatible_subnode(const void *blob, int node, 359 enum fdt_compat_id id, int *depthp) 360 { 361 do { 362 node = fdt_next_node(blob, node, depthp); 363 } while (*depthp > 1); 364 365 /* If this is a direct subnode, and compatible, return it */ 366 if (*depthp == 1 && 0 == fdt_node_check_compatible( 367 blob, node, compat_names[id])) 368 return node; 369 370 return -FDT_ERR_NOTFOUND; 371 } 372 373 int fdtdec_next_alias(const void *blob, const char *name, enum fdt_compat_id id, 374 int *upto) 375 { 376 #define MAX_STR_LEN 20 377 char str[MAX_STR_LEN + 20]; 378 int node, err; 379 380 /* snprintf() is not available */ 381 assert(strlen(name) < MAX_STR_LEN); 382 sprintf(str, "%.*s%d", MAX_STR_LEN, name, *upto); 383 node = fdt_path_offset(blob, str); 384 if (node < 0) 385 return node; 386 err = fdt_node_check_compatible(blob, node, compat_names[id]); 387 if (err < 0) 388 return err; 389 if (err) 390 return -FDT_ERR_NOTFOUND; 391 (*upto)++; 392 return node; 393 } 394 395 int fdtdec_find_aliases_for_id(const void *blob, const char *name, 396 enum fdt_compat_id id, int *node_list, 397 int maxcount) 398 { 399 memset(node_list, '\0', sizeof(*node_list) * maxcount); 400 401 return fdtdec_add_aliases_for_id(blob, name, id, node_list, maxcount); 402 } 403 404 /* TODO: Can we tighten this code up a little? */ 405 int fdtdec_add_aliases_for_id(const void *blob, const char *name, 406 enum fdt_compat_id id, int *node_list, 407 int maxcount) 408 { 409 int name_len = strlen(name); 410 int nodes[maxcount]; 411 int num_found = 0; 412 int offset, node; 413 int alias_node; 414 int count; 415 int i, j; 416 417 /* find the alias node if present */ 418 alias_node = fdt_path_offset(blob, "/aliases"); 419 420 /* 421 * start with nothing, and we can assume that the root node can't 422 * match 423 */ 424 memset(nodes, '\0', sizeof(nodes)); 425 426 /* First find all the compatible nodes */ 427 for (node = count = 0; node >= 0 && count < maxcount;) { 428 node = fdtdec_next_compatible(blob, node, id); 429 if (node >= 0) 430 nodes[count++] = node; 431 } 432 if (node >= 0) 433 debug("%s: warning: maxcount exceeded with alias '%s'\n", 434 __func__, name); 435 436 /* Now find all the aliases */ 437 for (offset = fdt_first_property_offset(blob, alias_node); 438 offset > 0; 439 offset = fdt_next_property_offset(blob, offset)) { 440 const struct fdt_property *prop; 441 const char *path; 442 int number; 443 int found; 444 445 node = 0; 446 prop = fdt_get_property_by_offset(blob, offset, NULL); 447 path = fdt_string(blob, fdt32_to_cpu(prop->nameoff)); 448 if (prop->len && 0 == strncmp(path, name, name_len)) 449 node = fdt_path_offset(blob, prop->data); 450 if (node <= 0) 451 continue; 452 453 /* Get the alias number */ 454 number = simple_strtoul(path + name_len, NULL, 10); 455 if (number < 0 || number >= maxcount) { 456 debug("%s: warning: alias '%s' is out of range\n", 457 __func__, path); 458 continue; 459 } 460 461 /* Make sure the node we found is actually in our list! */ 462 found = -1; 463 for (j = 0; j < count; j++) 464 if (nodes[j] == node) { 465 found = j; 466 break; 467 } 468 469 if (found == -1) { 470 debug("%s: warning: alias '%s' points to a node " 471 "'%s' that is missing or is not compatible " 472 " with '%s'\n", __func__, path, 473 fdt_get_name(blob, node, NULL), 474 compat_names[id]); 475 continue; 476 } 477 478 /* 479 * Add this node to our list in the right place, and mark 480 * it as done. 481 */ 482 if (fdtdec_get_is_enabled(blob, node)) { 483 if (node_list[number]) { 484 debug("%s: warning: alias '%s' requires that " 485 "a node be placed in the list in a " 486 "position which is already filled by " 487 "node '%s'\n", __func__, path, 488 fdt_get_name(blob, node, NULL)); 489 continue; 490 } 491 node_list[number] = node; 492 if (number >= num_found) 493 num_found = number + 1; 494 } 495 nodes[found] = 0; 496 } 497 498 /* Add any nodes not mentioned by an alias */ 499 for (i = j = 0; i < maxcount; i++) { 500 if (!node_list[i]) { 501 for (; j < maxcount; j++) 502 if (nodes[j] && 503 fdtdec_get_is_enabled(blob, nodes[j])) 504 break; 505 506 /* Have we run out of nodes to add? */ 507 if (j == maxcount) 508 break; 509 510 assert(!node_list[i]); 511 node_list[i] = nodes[j++]; 512 if (i >= num_found) 513 num_found = i + 1; 514 } 515 } 516 517 return num_found; 518 } 519 520 int fdtdec_get_alias_seq(const void *blob, const char *base, int offset, 521 int *seqp) 522 { 523 int base_len = strlen(base); 524 const char *find_name; 525 int find_namelen; 526 int prop_offset; 527 int aliases; 528 529 find_name = fdt_get_name(blob, offset, &find_namelen); 530 debug("Looking for '%s' at %d, name %s\n", base, offset, find_name); 531 532 aliases = fdt_path_offset(blob, "/aliases"); 533 for (prop_offset = fdt_first_property_offset(blob, aliases); 534 prop_offset > 0; 535 prop_offset = fdt_next_property_offset(blob, prop_offset)) { 536 const char *prop; 537 const char *name; 538 const char *slash; 539 int len, val; 540 541 prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len); 542 debug(" - %s, %s\n", name, prop); 543 if (len < find_namelen || *prop != '/' || prop[len - 1] || 544 strncmp(name, base, base_len)) 545 continue; 546 547 slash = strrchr(prop, '/'); 548 if (strcmp(slash + 1, find_name)) 549 continue; 550 val = trailing_strtol(name); 551 if (val != -1) { 552 *seqp = val; 553 debug("Found seq %d\n", *seqp); 554 return 0; 555 } 556 } 557 558 debug("Not found\n"); 559 return -ENOENT; 560 } 561 562 const char *fdtdec_get_chosen_prop(const void *blob, const char *name) 563 { 564 int chosen_node; 565 566 if (!blob) 567 return NULL; 568 chosen_node = fdt_path_offset(blob, "/chosen"); 569 return fdt_getprop(blob, chosen_node, name, NULL); 570 } 571 572 int fdtdec_get_chosen_node(const void *blob, const char *name) 573 { 574 const char *prop; 575 576 prop = fdtdec_get_chosen_prop(blob, name); 577 if (!prop) 578 return -FDT_ERR_NOTFOUND; 579 return fdt_path_offset(blob, prop); 580 } 581 582 int fdtdec_check_fdt(void) 583 { 584 /* 585 * We must have an FDT, but we cannot panic() yet since the console 586 * is not ready. So for now, just assert(). Boards which need an early 587 * FDT (prior to console ready) will need to make their own 588 * arrangements and do their own checks. 589 */ 590 assert(!fdtdec_prepare_fdt()); 591 return 0; 592 } 593 594 /* 595 * This function is a little odd in that it accesses global data. At some 596 * point if the architecture board.c files merge this will make more sense. 597 * Even now, it is common code. 598 */ 599 int fdtdec_prepare_fdt(void) 600 { 601 if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) || 602 fdt_check_header(gd->fdt_blob)) { 603 #ifdef CONFIG_SPL_BUILD 604 puts("Missing DTB\n"); 605 #else 606 puts("No valid device tree binary found - please append one to U-Boot binary, use u-boot-dtb.bin or define CONFIG_OF_EMBED. For sandbox, use -d <file.dtb>\n"); 607 # ifdef DEBUG 608 if (gd->fdt_blob) { 609 printf("fdt_blob=%p\n", gd->fdt_blob); 610 print_buffer((ulong)gd->fdt_blob, gd->fdt_blob, 4, 611 32, 0); 612 } 613 # endif 614 #endif 615 return -1; 616 } 617 return 0; 618 } 619 620 int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name) 621 { 622 const u32 *phandle; 623 int lookup; 624 625 debug("%s: %s\n", __func__, prop_name); 626 phandle = fdt_getprop(blob, node, prop_name, NULL); 627 if (!phandle) 628 return -FDT_ERR_NOTFOUND; 629 630 lookup = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*phandle)); 631 return lookup; 632 } 633 634 /** 635 * Look up a property in a node and check that it has a minimum length. 636 * 637 * @param blob FDT blob 638 * @param node node to examine 639 * @param prop_name name of property to find 640 * @param min_len minimum property length in bytes 641 * @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not 642 found, or -FDT_ERR_BADLAYOUT if not enough data 643 * @return pointer to cell, which is only valid if err == 0 644 */ 645 static const void *get_prop_check_min_len(const void *blob, int node, 646 const char *prop_name, int min_len, 647 int *err) 648 { 649 const void *cell; 650 int len; 651 652 debug("%s: %s\n", __func__, prop_name); 653 cell = fdt_getprop(blob, node, prop_name, &len); 654 if (!cell) 655 *err = -FDT_ERR_NOTFOUND; 656 else if (len < min_len) 657 *err = -FDT_ERR_BADLAYOUT; 658 else 659 *err = 0; 660 return cell; 661 } 662 663 int fdtdec_get_int_array(const void *blob, int node, const char *prop_name, 664 u32 *array, int count) 665 { 666 const u32 *cell; 667 int err = 0; 668 669 debug("%s: %s\n", __func__, prop_name); 670 cell = get_prop_check_min_len(blob, node, prop_name, 671 sizeof(u32) * count, &err); 672 if (!err) { 673 int i; 674 675 for (i = 0; i < count; i++) 676 array[i] = fdt32_to_cpu(cell[i]); 677 } 678 return err; 679 } 680 681 int fdtdec_get_int_array_count(const void *blob, int node, 682 const char *prop_name, u32 *array, int count) 683 { 684 const u32 *cell; 685 int len, elems; 686 int i; 687 688 debug("%s: %s\n", __func__, prop_name); 689 cell = fdt_getprop(blob, node, prop_name, &len); 690 if (!cell) 691 return -FDT_ERR_NOTFOUND; 692 elems = len / sizeof(u32); 693 if (count > elems) 694 count = elems; 695 for (i = 0; i < count; i++) 696 array[i] = fdt32_to_cpu(cell[i]); 697 698 return count; 699 } 700 701 const u32 *fdtdec_locate_array(const void *blob, int node, 702 const char *prop_name, int count) 703 { 704 const u32 *cell; 705 int err; 706 707 cell = get_prop_check_min_len(blob, node, prop_name, 708 sizeof(u32) * count, &err); 709 return err ? NULL : cell; 710 } 711 712 int fdtdec_get_bool(const void *blob, int node, const char *prop_name) 713 { 714 const s32 *cell; 715 int len; 716 717 debug("%s: %s\n", __func__, prop_name); 718 cell = fdt_getprop(blob, node, prop_name, &len); 719 return cell != NULL; 720 } 721 722 int fdtdec_parse_phandle_with_args(const void *blob, int src_node, 723 const char *list_name, 724 const char *cells_name, 725 int cell_count, int index, 726 struct fdtdec_phandle_args *out_args) 727 { 728 const __be32 *list, *list_end; 729 int rc = 0, size, cur_index = 0; 730 uint32_t count = 0; 731 int node = -1; 732 int phandle; 733 734 /* Retrieve the phandle list property */ 735 list = fdt_getprop(blob, src_node, list_name, &size); 736 if (!list) 737 return -ENOENT; 738 list_end = list + size / sizeof(*list); 739 740 /* Loop over the phandles until all the requested entry is found */ 741 while (list < list_end) { 742 rc = -EINVAL; 743 count = 0; 744 745 /* 746 * If phandle is 0, then it is an empty entry with no 747 * arguments. Skip forward to the next entry. 748 */ 749 phandle = be32_to_cpup(list++); 750 if (phandle) { 751 /* 752 * Find the provider node and parse the #*-cells 753 * property to determine the argument length. 754 * 755 * This is not needed if the cell count is hard-coded 756 * (i.e. cells_name not set, but cell_count is set), 757 * except when we're going to return the found node 758 * below. 759 */ 760 if (cells_name || cur_index == index) { 761 node = fdt_node_offset_by_phandle(blob, 762 phandle); 763 if (!node) { 764 debug("%s: could not find phandle\n", 765 fdt_get_name(blob, src_node, 766 NULL)); 767 goto err; 768 } 769 } 770 771 if (cells_name) { 772 count = fdtdec_get_int(blob, node, cells_name, 773 -1); 774 if (count == -1) { 775 debug("%s: could not get %s for %s\n", 776 fdt_get_name(blob, src_node, 777 NULL), 778 cells_name, 779 fdt_get_name(blob, node, 780 NULL)); 781 goto err; 782 } 783 } else { 784 count = cell_count; 785 } 786 787 /* 788 * Make sure that the arguments actually fit in the 789 * remaining property data length 790 */ 791 if (list + count > list_end) { 792 debug("%s: arguments longer than property\n", 793 fdt_get_name(blob, src_node, NULL)); 794 goto err; 795 } 796 } 797 798 /* 799 * All of the error cases above bail out of the loop, so at 800 * this point, the parsing is successful. If the requested 801 * index matches, then fill the out_args structure and return, 802 * or return -ENOENT for an empty entry. 803 */ 804 rc = -ENOENT; 805 if (cur_index == index) { 806 if (!phandle) 807 goto err; 808 809 if (out_args) { 810 int i; 811 812 if (count > MAX_PHANDLE_ARGS) { 813 debug("%s: too many arguments %d\n", 814 fdt_get_name(blob, src_node, 815 NULL), count); 816 count = MAX_PHANDLE_ARGS; 817 } 818 out_args->node = node; 819 out_args->args_count = count; 820 for (i = 0; i < count; i++) { 821 out_args->args[i] = 822 be32_to_cpup(list++); 823 } 824 } 825 826 /* Found it! return success */ 827 return 0; 828 } 829 830 node = -1; 831 list += count; 832 cur_index++; 833 } 834 835 /* 836 * Result will be one of: 837 * -ENOENT : index is for empty phandle 838 * -EINVAL : parsing error on data 839 * [1..n] : Number of phandle (count mode; when index = -1) 840 */ 841 rc = index < 0 ? cur_index : -ENOENT; 842 err: 843 return rc; 844 } 845 846 int fdtdec_get_child_count(const void *blob, int node) 847 { 848 int subnode; 849 int num = 0; 850 851 fdt_for_each_subnode(subnode, blob, node) 852 num++; 853 854 return num; 855 } 856 857 int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name, 858 u8 *array, int count) 859 { 860 const u8 *cell; 861 int err; 862 863 cell = get_prop_check_min_len(blob, node, prop_name, count, &err); 864 if (!err) 865 memcpy(array, cell, count); 866 return err; 867 } 868 869 const u8 *fdtdec_locate_byte_array(const void *blob, int node, 870 const char *prop_name, int count) 871 { 872 const u8 *cell; 873 int err; 874 875 cell = get_prop_check_min_len(blob, node, prop_name, count, &err); 876 if (err) 877 return NULL; 878 return cell; 879 } 880 881 int fdtdec_get_config_int(const void *blob, const char *prop_name, 882 int default_val) 883 { 884 int config_node; 885 886 debug("%s: %s\n", __func__, prop_name); 887 config_node = fdt_path_offset(blob, "/config"); 888 if (config_node < 0) 889 return default_val; 890 return fdtdec_get_int(blob, config_node, prop_name, default_val); 891 } 892 893 int fdtdec_get_config_bool(const void *blob, const char *prop_name) 894 { 895 int config_node; 896 const void *prop; 897 898 debug("%s: %s\n", __func__, prop_name); 899 config_node = fdt_path_offset(blob, "/config"); 900 if (config_node < 0) 901 return 0; 902 prop = fdt_get_property(blob, config_node, prop_name, NULL); 903 904 return prop != NULL; 905 } 906 907 char *fdtdec_get_config_string(const void *blob, const char *prop_name) 908 { 909 const char *nodep; 910 int nodeoffset; 911 int len; 912 913 debug("%s: %s\n", __func__, prop_name); 914 nodeoffset = fdt_path_offset(blob, "/config"); 915 if (nodeoffset < 0) 916 return NULL; 917 918 nodep = fdt_getprop(blob, nodeoffset, prop_name, &len); 919 if (!nodep) 920 return NULL; 921 922 return (char *)nodep; 923 } 924 925 int fdtdec_decode_region(const void *blob, int node, const char *prop_name, 926 fdt_addr_t *basep, fdt_size_t *sizep) 927 { 928 const fdt_addr_t *cell; 929 int len; 930 931 debug("%s: %s: %s\n", __func__, fdt_get_name(blob, node, NULL), 932 prop_name); 933 cell = fdt_getprop(blob, node, prop_name, &len); 934 if (!cell || (len < sizeof(fdt_addr_t) * 2)) { 935 debug("cell=%p, len=%d\n", cell, len); 936 return -1; 937 } 938 939 *basep = fdt_addr_to_cpu(*cell); 940 *sizep = fdt_size_to_cpu(cell[1]); 941 debug("%s: base=%08lx, size=%lx\n", __func__, (ulong)*basep, 942 (ulong)*sizep); 943 944 return 0; 945 } 946 947 u64 fdtdec_get_number(const fdt32_t *ptr, unsigned int cells) 948 { 949 u64 number = 0; 950 951 while (cells--) 952 number = (number << 32) | fdt32_to_cpu(*ptr++); 953 954 return number; 955 } 956 957 int fdt_get_resource(const void *fdt, int node, const char *property, 958 unsigned int index, struct fdt_resource *res) 959 { 960 const fdt32_t *ptr, *end; 961 int na, ns, len, parent; 962 unsigned int i = 0; 963 964 parent = fdt_parent_offset(fdt, node); 965 if (parent < 0) 966 return parent; 967 968 na = fdt_address_cells(fdt, parent); 969 ns = fdt_size_cells(fdt, parent); 970 971 ptr = fdt_getprop(fdt, node, property, &len); 972 if (!ptr) 973 return len; 974 975 end = ptr + len / sizeof(*ptr); 976 977 while (ptr + na + ns <= end) { 978 if (i == index) { 979 res->start = fdtdec_get_number(ptr, na); 980 res->end = res->start; 981 res->end += fdtdec_get_number(&ptr[na], ns) - 1; 982 return 0; 983 } 984 985 ptr += na + ns; 986 i++; 987 } 988 989 return -FDT_ERR_NOTFOUND; 990 } 991 992 int fdt_get_named_resource(const void *fdt, int node, const char *property, 993 const char *prop_names, const char *name, 994 struct fdt_resource *res) 995 { 996 int index; 997 998 index = fdt_stringlist_search(fdt, node, prop_names, name); 999 if (index < 0) 1000 return index; 1001 1002 return fdt_get_resource(fdt, node, property, index, res); 1003 } 1004 1005 int fdtdec_decode_memory_region(const void *blob, int config_node, 1006 const char *mem_type, const char *suffix, 1007 fdt_addr_t *basep, fdt_size_t *sizep) 1008 { 1009 char prop_name[50]; 1010 const char *mem; 1011 fdt_size_t size, offset_size; 1012 fdt_addr_t base, offset; 1013 int node; 1014 1015 if (config_node == -1) { 1016 config_node = fdt_path_offset(blob, "/config"); 1017 if (config_node < 0) { 1018 debug("%s: Cannot find /config node\n", __func__); 1019 return -ENOENT; 1020 } 1021 } 1022 if (!suffix) 1023 suffix = ""; 1024 1025 snprintf(prop_name, sizeof(prop_name), "%s-memory%s", mem_type, 1026 suffix); 1027 mem = fdt_getprop(blob, config_node, prop_name, NULL); 1028 if (!mem) { 1029 debug("%s: No memory type for '%s', using /memory\n", __func__, 1030 prop_name); 1031 mem = "/memory"; 1032 } 1033 1034 node = fdt_path_offset(blob, mem); 1035 if (node < 0) { 1036 debug("%s: Failed to find node '%s': %s\n", __func__, mem, 1037 fdt_strerror(node)); 1038 return -ENOENT; 1039 } 1040 1041 /* 1042 * Not strictly correct - the memory may have multiple banks. We just 1043 * use the first 1044 */ 1045 if (fdtdec_decode_region(blob, node, "reg", &base, &size)) { 1046 debug("%s: Failed to decode memory region %s\n", __func__, 1047 mem); 1048 return -EINVAL; 1049 } 1050 1051 snprintf(prop_name, sizeof(prop_name), "%s-offset%s", mem_type, 1052 suffix); 1053 if (fdtdec_decode_region(blob, config_node, prop_name, &offset, 1054 &offset_size)) { 1055 debug("%s: Failed to decode memory region '%s'\n", __func__, 1056 prop_name); 1057 return -EINVAL; 1058 } 1059 1060 *basep = base + offset; 1061 *sizep = offset_size; 1062 1063 return 0; 1064 } 1065 1066 static int decode_timing_property(const void *blob, int node, const char *name, 1067 struct timing_entry *result) 1068 { 1069 int length, ret = 0; 1070 const u32 *prop; 1071 1072 prop = fdt_getprop(blob, node, name, &length); 1073 if (!prop) { 1074 debug("%s: could not find property %s\n", 1075 fdt_get_name(blob, node, NULL), name); 1076 return length; 1077 } 1078 1079 if (length == sizeof(u32)) { 1080 result->typ = fdtdec_get_int(blob, node, name, 0); 1081 result->min = result->typ; 1082 result->max = result->typ; 1083 } else { 1084 ret = fdtdec_get_int_array(blob, node, name, &result->min, 3); 1085 } 1086 1087 return ret; 1088 } 1089 1090 int fdtdec_decode_display_timing(const void *blob, int parent, int index, 1091 struct display_timing *dt) 1092 { 1093 int i, node, timings_node; 1094 u32 val = 0; 1095 int ret = 0; 1096 1097 timings_node = fdt_subnode_offset(blob, parent, "display-timings"); 1098 if (timings_node < 0) 1099 return timings_node; 1100 1101 for (i = 0, node = fdt_first_subnode(blob, timings_node); 1102 node > 0 && i != index; 1103 node = fdt_next_subnode(blob, node)) 1104 i++; 1105 1106 if (node < 0) 1107 return node; 1108 1109 memset(dt, 0, sizeof(*dt)); 1110 1111 ret |= decode_timing_property(blob, node, "hback-porch", 1112 &dt->hback_porch); 1113 ret |= decode_timing_property(blob, node, "hfront-porch", 1114 &dt->hfront_porch); 1115 ret |= decode_timing_property(blob, node, "hactive", &dt->hactive); 1116 ret |= decode_timing_property(blob, node, "hsync-len", &dt->hsync_len); 1117 ret |= decode_timing_property(blob, node, "vback-porch", 1118 &dt->vback_porch); 1119 ret |= decode_timing_property(blob, node, "vfront-porch", 1120 &dt->vfront_porch); 1121 ret |= decode_timing_property(blob, node, "vactive", &dt->vactive); 1122 ret |= decode_timing_property(blob, node, "vsync-len", &dt->vsync_len); 1123 ret |= decode_timing_property(blob, node, "clock-frequency", 1124 &dt->pixelclock); 1125 1126 dt->flags = 0; 1127 val = fdtdec_get_int(blob, node, "vsync-active", -1); 1128 if (val != -1) { 1129 dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH : 1130 DISPLAY_FLAGS_VSYNC_LOW; 1131 } 1132 val = fdtdec_get_int(blob, node, "hsync-active", -1); 1133 if (val != -1) { 1134 dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH : 1135 DISPLAY_FLAGS_HSYNC_LOW; 1136 } 1137 val = fdtdec_get_int(blob, node, "de-active", -1); 1138 if (val != -1) { 1139 dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH : 1140 DISPLAY_FLAGS_DE_LOW; 1141 } 1142 val = fdtdec_get_int(blob, node, "pixelclk-active", -1); 1143 if (val != -1) { 1144 dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE : 1145 DISPLAY_FLAGS_PIXDATA_NEGEDGE; 1146 } 1147 1148 if (fdtdec_get_bool(blob, node, "interlaced")) 1149 dt->flags |= DISPLAY_FLAGS_INTERLACED; 1150 if (fdtdec_get_bool(blob, node, "doublescan")) 1151 dt->flags |= DISPLAY_FLAGS_DOUBLESCAN; 1152 if (fdtdec_get_bool(blob, node, "doubleclk")) 1153 dt->flags |= DISPLAY_FLAGS_DOUBLECLK; 1154 1155 return ret; 1156 } 1157 1158 int fdtdec_setup_memory_size(void) 1159 { 1160 int ret, mem; 1161 struct fdt_resource res; 1162 1163 mem = fdt_path_offset(gd->fdt_blob, "/memory"); 1164 if (mem < 0) { 1165 debug("%s: Missing /memory node\n", __func__); 1166 return -EINVAL; 1167 } 1168 1169 ret = fdt_get_resource(gd->fdt_blob, mem, "reg", 0, &res); 1170 if (ret != 0) { 1171 debug("%s: Unable to decode first memory bank\n", __func__); 1172 return -EINVAL; 1173 } 1174 1175 gd->ram_size = (phys_size_t)(res.end - res.start + 1); 1176 debug("%s: Initial DRAM size %llx\n", __func__, 1177 (unsigned long long)gd->ram_size); 1178 1179 return 0; 1180 } 1181 1182 #if defined(CONFIG_NR_DRAM_BANKS) 1183 int fdtdec_setup_memory_banksize(void) 1184 { 1185 int bank, ret, mem, reg = 0; 1186 struct fdt_resource res; 1187 1188 mem = fdt_node_offset_by_prop_value(gd->fdt_blob, -1, "device_type", 1189 "memory", 7); 1190 if (mem < 0) { 1191 debug("%s: Missing /memory node\n", __func__); 1192 return -EINVAL; 1193 } 1194 1195 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) { 1196 ret = fdt_get_resource(gd->fdt_blob, mem, "reg", reg++, &res); 1197 if (ret == -FDT_ERR_NOTFOUND) { 1198 reg = 0; 1199 mem = fdt_node_offset_by_prop_value(gd->fdt_blob, mem, 1200 "device_type", 1201 "memory", 7); 1202 if (mem == -FDT_ERR_NOTFOUND) 1203 break; 1204 1205 ret = fdt_get_resource(gd->fdt_blob, mem, "reg", reg++, &res); 1206 if (ret == -FDT_ERR_NOTFOUND) 1207 break; 1208 } 1209 if (ret != 0) { 1210 return -EINVAL; 1211 } 1212 1213 gd->bd->bi_dram[bank].start = (phys_addr_t)res.start; 1214 gd->bd->bi_dram[bank].size = 1215 (phys_size_t)(res.end - res.start + 1); 1216 1217 debug("%s: DRAM Bank #%d: start = 0x%llx, size = 0x%llx\n", 1218 __func__, bank, 1219 (unsigned long long)gd->bd->bi_dram[bank].start, 1220 (unsigned long long)gd->bd->bi_dram[bank].size); 1221 } 1222 1223 return 0; 1224 } 1225 #endif 1226 1227 #if CONFIG_IS_ENABLED(MULTI_DTB_FIT) 1228 # if CONFIG_IS_ENABLED(MULTI_DTB_FIT_GZIP) ||\ 1229 CONFIG_IS_ENABLED(MULTI_DTB_FIT_LZO) 1230 static int uncompress_blob(const void *src, ulong sz_src, void **dstp) 1231 { 1232 size_t sz_out = CONFIG_SPL_MULTI_DTB_FIT_UNCOMPRESS_SZ; 1233 ulong sz_in = sz_src; 1234 void *dst; 1235 int rc; 1236 1237 if (CONFIG_IS_ENABLED(GZIP)) 1238 if (gzip_parse_header(src, sz_in) < 0) 1239 return -1; 1240 if (CONFIG_IS_ENABLED(LZO)) 1241 if (!lzop_is_valid_header(src)) 1242 return -EBADMSG; 1243 1244 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC)) { 1245 dst = malloc(sz_out); 1246 if (!dst) { 1247 puts("uncompress_blob: Unable to allocate memory\n"); 1248 return -ENOMEM; 1249 } 1250 } else { 1251 # if CONFIG_IS_ENABLED(MULTI_DTB_FIT_USER_DEFINED_AREA) 1252 dst = (void *)CONFIG_VAL(MULTI_DTB_FIT_USER_DEF_ADDR); 1253 # else 1254 return -ENOTSUPP; 1255 # endif 1256 } 1257 1258 if (CONFIG_IS_ENABLED(GZIP)) 1259 rc = gunzip(dst, sz_out, (u8 *)src, &sz_in); 1260 else if (CONFIG_IS_ENABLED(LZO)) 1261 rc = lzop_decompress(src, sz_in, dst, &sz_out); 1262 1263 if (rc < 0) { 1264 /* not a valid compressed blob */ 1265 puts("uncompress_blob: Unable to uncompress\n"); 1266 if (CONFIG_IS_ENABLED(MULTI_DTB_FIT_DYN_ALLOC)) 1267 free(dst); 1268 return -EBADMSG; 1269 } 1270 *dstp = dst; 1271 return 0; 1272 } 1273 # else 1274 static int uncompress_blob(const void *src, ulong sz_src, void **dstp) 1275 { 1276 return -ENOTSUPP; 1277 } 1278 # endif 1279 #endif 1280 1281 #if defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE) 1282 /* 1283 * For CONFIG_OF_SEPARATE, the board may optionally implement this to 1284 * provide and/or fixup the fdt. 1285 */ 1286 __weak void *board_fdt_blob_setup(void) 1287 { 1288 void *fdt_blob = NULL; 1289 #ifdef CONFIG_SPL_BUILD 1290 /* FDT is at end of BSS unless it is in a different memory region */ 1291 if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS)) 1292 fdt_blob = (ulong *)&_image_binary_end; 1293 else 1294 fdt_blob = (ulong *)&__bss_end; 1295 #else 1296 /* FDT is at end of image */ 1297 fdt_blob = (ulong *)&_end; 1298 #endif 1299 return fdt_blob; 1300 } 1301 #endif 1302 1303 int fdtdec_setup(void) 1304 { 1305 #if CONFIG_IS_ENABLED(OF_CONTROL) 1306 # if CONFIG_IS_ENABLED(MULTI_DTB_FIT) 1307 void *fdt_blob; 1308 # endif 1309 # ifdef CONFIG_OF_EMBED 1310 /* Get a pointer to the FDT */ 1311 # ifdef CONFIG_SPL_BUILD 1312 gd->fdt_blob = __dtb_dt_spl_begin; 1313 # else 1314 gd->fdt_blob = __dtb_dt_begin; 1315 # endif 1316 # elif defined(CONFIG_OF_BOARD) || defined(CONFIG_OF_SEPARATE) 1317 /* Allow the board to override the fdt address. */ 1318 gd->fdt_blob = board_fdt_blob_setup(); 1319 # elif defined(CONFIG_OF_HOSTFILE) 1320 if (sandbox_read_fdt_from_file()) { 1321 puts("Failed to read control FDT\n"); 1322 return -1; 1323 } 1324 # endif 1325 # ifndef CONFIG_SPL_BUILD 1326 /* Allow the early environment to override the fdt address */ 1327 gd->fdt_blob = (void *)env_get_ulong("fdtcontroladdr", 16, 1328 (uintptr_t)gd->fdt_blob); 1329 # endif 1330 1331 # if CONFIG_IS_ENABLED(MULTI_DTB_FIT) 1332 /* 1333 * Try and uncompress the blob. 1334 * Unfortunately there is no way to know how big the input blob really 1335 * is. So let us set the maximum input size arbitrarily high. 16MB 1336 * ought to be more than enough for packed DTBs. 1337 */ 1338 if (uncompress_blob(gd->fdt_blob, 0x1000000, &fdt_blob) == 0) 1339 gd->fdt_blob = fdt_blob; 1340 1341 /* 1342 * Check if blob is a FIT images containings DTBs. 1343 * If so, pick the most relevant 1344 */ 1345 fdt_blob = locate_dtb_in_fit(gd->fdt_blob); 1346 if (fdt_blob) 1347 gd->fdt_blob = fdt_blob; 1348 # endif 1349 #endif 1350 1351 return fdtdec_prepare_fdt(); 1352 } 1353 1354 #ifdef CONFIG_NR_DRAM_BANKS 1355 int fdtdec_decode_ram_size(const void *blob, const char *area, int board_id, 1356 phys_addr_t *basep, phys_size_t *sizep, bd_t *bd) 1357 { 1358 int addr_cells, size_cells; 1359 const u32 *cell, *end; 1360 u64 total_size, size, addr; 1361 int node, child; 1362 bool auto_size; 1363 int bank; 1364 int len; 1365 1366 debug("%s: board_id=%d\n", __func__, board_id); 1367 if (!area) 1368 area = "/memory"; 1369 node = fdt_path_offset(blob, area); 1370 if (node < 0) { 1371 debug("No %s node found\n", area); 1372 return -ENOENT; 1373 } 1374 1375 cell = fdt_getprop(blob, node, "reg", &len); 1376 if (!cell) { 1377 debug("No reg property found\n"); 1378 return -ENOENT; 1379 } 1380 1381 addr_cells = fdt_address_cells(blob, node); 1382 size_cells = fdt_size_cells(blob, node); 1383 1384 /* Check the board id and mask */ 1385 for (child = fdt_first_subnode(blob, node); 1386 child >= 0; 1387 child = fdt_next_subnode(blob, child)) { 1388 int match_mask, match_value; 1389 1390 match_mask = fdtdec_get_int(blob, child, "match-mask", -1); 1391 match_value = fdtdec_get_int(blob, child, "match-value", -1); 1392 1393 if (match_value >= 0 && 1394 ((board_id & match_mask) == match_value)) { 1395 /* Found matching mask */ 1396 debug("Found matching mask %d\n", match_mask); 1397 node = child; 1398 cell = fdt_getprop(blob, node, "reg", &len); 1399 if (!cell) { 1400 debug("No memory-banks property found\n"); 1401 return -EINVAL; 1402 } 1403 break; 1404 } 1405 } 1406 /* Note: if no matching subnode was found we use the parent node */ 1407 1408 if (bd) { 1409 memset(bd->bi_dram, '\0', sizeof(bd->bi_dram[0]) * 1410 CONFIG_NR_DRAM_BANKS); 1411 } 1412 1413 auto_size = fdtdec_get_bool(blob, node, "auto-size"); 1414 1415 total_size = 0; 1416 end = cell + len / 4 - addr_cells - size_cells; 1417 debug("cell at %p, end %p\n", cell, end); 1418 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) { 1419 if (cell > end) 1420 break; 1421 addr = 0; 1422 if (addr_cells == 2) 1423 addr += (u64)fdt32_to_cpu(*cell++) << 32UL; 1424 addr += fdt32_to_cpu(*cell++); 1425 if (bd) 1426 bd->bi_dram[bank].start = addr; 1427 if (basep && !bank) 1428 *basep = (phys_addr_t)addr; 1429 1430 size = 0; 1431 if (size_cells == 2) 1432 size += (u64)fdt32_to_cpu(*cell++) << 32UL; 1433 size += fdt32_to_cpu(*cell++); 1434 1435 if (auto_size) { 1436 u64 new_size; 1437 1438 debug("Auto-sizing %" PRIx64 ", size %" PRIx64 ": ", 1439 addr, size); 1440 new_size = get_ram_size((long *)(uintptr_t)addr, size); 1441 if (new_size == size) { 1442 debug("OK\n"); 1443 } else { 1444 debug("sized to %" PRIx64 "\n", new_size); 1445 size = new_size; 1446 } 1447 } 1448 1449 if (bd) 1450 bd->bi_dram[bank].size = size; 1451 total_size += size; 1452 } 1453 1454 debug("Memory size %" PRIu64 "\n", total_size); 1455 if (sizep) 1456 *sizep = (phys_size_t)total_size; 1457 1458 return 0; 1459 } 1460 #endif /* CONFIG_NR_DRAM_BANKS */ 1461 1462 #endif /* !USE_HOSTCC */ 1463