1 /* 2 * Copyright (c) 2011 The Chromium OS Authors. 3 * SPDX-License-Identifier: GPL-2.0+ 4 */ 5 6 #ifndef USE_HOSTCC 7 #include <common.h> 8 #include <serial.h> 9 #include <libfdt.h> 10 #include <fdtdec.h> 11 12 #include <asm/gpio.h> 13 14 DECLARE_GLOBAL_DATA_PTR; 15 16 /* 17 * Here are the type we know about. One day we might allow drivers to 18 * register. For now we just put them here. The COMPAT macro allows us to 19 * turn this into a sparse list later, and keeps the ID with the name. 20 */ 21 #define COMPAT(id, name) name 22 static const char * const compat_names[COMPAT_COUNT] = { 23 COMPAT(UNKNOWN, "<none>"), 24 COMPAT(NVIDIA_TEGRA20_USB, "nvidia,tegra20-ehci"), 25 COMPAT(NVIDIA_TEGRA30_USB, "nvidia,tegra30-ehci"), 26 COMPAT(NVIDIA_TEGRA114_USB, "nvidia,tegra114-ehci"), 27 COMPAT(NVIDIA_TEGRA114_I2C, "nvidia,tegra114-i2c"), 28 COMPAT(NVIDIA_TEGRA20_I2C, "nvidia,tegra20-i2c"), 29 COMPAT(NVIDIA_TEGRA20_DVC, "nvidia,tegra20-i2c-dvc"), 30 COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"), 31 COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"), 32 COMPAT(NVIDIA_TEGRA20_KBC, "nvidia,tegra20-kbc"), 33 COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"), 34 COMPAT(NVIDIA_TEGRA20_PWM, "nvidia,tegra20-pwm"), 35 COMPAT(NVIDIA_TEGRA20_DC, "nvidia,tegra20-dc"), 36 COMPAT(NVIDIA_TEGRA124_SDMMC, "nvidia,tegra124-sdhci"), 37 COMPAT(NVIDIA_TEGRA30_SDMMC, "nvidia,tegra30-sdhci"), 38 COMPAT(NVIDIA_TEGRA20_SDMMC, "nvidia,tegra20-sdhci"), 39 COMPAT(NVIDIA_TEGRA20_SFLASH, "nvidia,tegra20-sflash"), 40 COMPAT(NVIDIA_TEGRA20_SLINK, "nvidia,tegra20-slink"), 41 COMPAT(NVIDIA_TEGRA114_SPI, "nvidia,tegra114-spi"), 42 COMPAT(SMSC_LAN9215, "smsc,lan9215"), 43 COMPAT(SAMSUNG_EXYNOS5_SROMC, "samsung,exynos-sromc"), 44 COMPAT(SAMSUNG_S3C2440_I2C, "samsung,s3c2440-i2c"), 45 COMPAT(SAMSUNG_EXYNOS5_SOUND, "samsung,exynos-sound"), 46 COMPAT(WOLFSON_WM8994_CODEC, "wolfson,wm8994-codec"), 47 COMPAT(SAMSUNG_EXYNOS_SPI, "samsung,exynos-spi"), 48 COMPAT(GOOGLE_CROS_EC, "google,cros-ec"), 49 COMPAT(GOOGLE_CROS_EC_KEYB, "google,cros-ec-keyb"), 50 COMPAT(SAMSUNG_EXYNOS_EHCI, "samsung,exynos-ehci"), 51 COMPAT(SAMSUNG_EXYNOS5_XHCI, "samsung,exynos5250-xhci"), 52 COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"), 53 COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"), 54 COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"), 55 COMPAT(SAMSUNG_EXYNOS_FIMD, "samsung,exynos-fimd"), 56 COMPAT(SAMSUNG_EXYNOS_MIPI_DSI, "samsung,exynos-mipi-dsi"), 57 COMPAT(SAMSUNG_EXYNOS5_DP, "samsung,exynos5-dp"), 58 COMPAT(SAMSUNG_EXYNOS_DWMMC, "samsung,exynos-dwmmc"), 59 COMPAT(SAMSUNG_EXYNOS_MMC, "samsung,exynos-mmc"), 60 COMPAT(SAMSUNG_EXYNOS_SERIAL, "samsung,exynos4210-uart"), 61 COMPAT(MAXIM_MAX77686_PMIC, "maxim,max77686_pmic"), 62 COMPAT(GENERIC_SPI_FLASH, "spi-flash"), 63 COMPAT(MAXIM_98095_CODEC, "maxim,max98095-codec"), 64 COMPAT(INFINEON_SLB9635_TPM, "infineon,slb9635-tpm"), 65 COMPAT(INFINEON_SLB9645_TPM, "infineon,slb9645-tpm"), 66 COMPAT(SAMSUNG_EXYNOS5_I2C, "samsung,exynos5-hsi2c"), 67 COMPAT(SANDBOX_HOST_EMULATION, "sandbox,host-emulation"), 68 COMPAT(SANDBOX_LCD_SDL, "sandbox,lcd-sdl"), 69 COMPAT(TI_TPS65090, "ti,tps65090"), 70 }; 71 72 const char *fdtdec_get_compatible(enum fdt_compat_id id) 73 { 74 /* We allow reading of the 'unknown' ID for testing purposes */ 75 assert(id >= 0 && id < COMPAT_COUNT); 76 return compat_names[id]; 77 } 78 79 fdt_addr_t fdtdec_get_addr_size(const void *blob, int node, 80 const char *prop_name, fdt_size_t *sizep) 81 { 82 const fdt_addr_t *cell; 83 int len; 84 85 debug("%s: %s: ", __func__, prop_name); 86 cell = fdt_getprop(blob, node, prop_name, &len); 87 if (cell && ((!sizep && len == sizeof(fdt_addr_t)) || 88 len == sizeof(fdt_addr_t) * 2)) { 89 fdt_addr_t addr = fdt_addr_to_cpu(*cell); 90 if (sizep) { 91 const fdt_size_t *size; 92 93 size = (fdt_size_t *)((char *)cell + 94 sizeof(fdt_addr_t)); 95 *sizep = fdt_size_to_cpu(*size); 96 debug("addr=%08lx, size=%08x\n", 97 (ulong)addr, *sizep); 98 } else { 99 debug("%08lx\n", (ulong)addr); 100 } 101 return addr; 102 } 103 debug("(not found)\n"); 104 return FDT_ADDR_T_NONE; 105 } 106 107 fdt_addr_t fdtdec_get_addr(const void *blob, int node, 108 const char *prop_name) 109 { 110 return fdtdec_get_addr_size(blob, node, prop_name, NULL); 111 } 112 113 s32 fdtdec_get_int(const void *blob, int node, const char *prop_name, 114 s32 default_val) 115 { 116 const s32 *cell; 117 int len; 118 119 debug("%s: %s: ", __func__, prop_name); 120 cell = fdt_getprop(blob, node, prop_name, &len); 121 if (cell && len >= sizeof(s32)) { 122 s32 val = fdt32_to_cpu(cell[0]); 123 124 debug("%#x (%d)\n", val, val); 125 return val; 126 } 127 debug("(not found)\n"); 128 return default_val; 129 } 130 131 uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name, 132 uint64_t default_val) 133 { 134 const uint64_t *cell64; 135 int length; 136 137 cell64 = fdt_getprop(blob, node, prop_name, &length); 138 if (!cell64 || length < sizeof(*cell64)) 139 return default_val; 140 141 return fdt64_to_cpu(*cell64); 142 } 143 144 int fdtdec_get_is_enabled(const void *blob, int node) 145 { 146 const char *cell; 147 148 /* 149 * It should say "okay", so only allow that. Some fdts use "ok" but 150 * this is a bug. Please fix your device tree source file. See here 151 * for discussion: 152 * 153 * http://www.mail-archive.com/u-boot@lists.denx.de/msg71598.html 154 */ 155 cell = fdt_getprop(blob, node, "status", NULL); 156 if (cell) 157 return 0 == strcmp(cell, "okay"); 158 return 1; 159 } 160 161 enum fdt_compat_id fdtdec_lookup(const void *blob, int node) 162 { 163 enum fdt_compat_id id; 164 165 /* Search our drivers */ 166 for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++) 167 if (0 == fdt_node_check_compatible(blob, node, 168 compat_names[id])) 169 return id; 170 return COMPAT_UNKNOWN; 171 } 172 173 int fdtdec_next_compatible(const void *blob, int node, 174 enum fdt_compat_id id) 175 { 176 return fdt_node_offset_by_compatible(blob, node, compat_names[id]); 177 } 178 179 int fdtdec_next_compatible_subnode(const void *blob, int node, 180 enum fdt_compat_id id, int *depthp) 181 { 182 do { 183 node = fdt_next_node(blob, node, depthp); 184 } while (*depthp > 1); 185 186 /* If this is a direct subnode, and compatible, return it */ 187 if (*depthp == 1 && 0 == fdt_node_check_compatible( 188 blob, node, compat_names[id])) 189 return node; 190 191 return -FDT_ERR_NOTFOUND; 192 } 193 194 int fdtdec_next_alias(const void *blob, const char *name, 195 enum fdt_compat_id id, int *upto) 196 { 197 #define MAX_STR_LEN 20 198 char str[MAX_STR_LEN + 20]; 199 int node, err; 200 201 /* snprintf() is not available */ 202 assert(strlen(name) < MAX_STR_LEN); 203 sprintf(str, "%.*s%d", MAX_STR_LEN, name, *upto); 204 node = fdt_path_offset(blob, str); 205 if (node < 0) 206 return node; 207 err = fdt_node_check_compatible(blob, node, compat_names[id]); 208 if (err < 0) 209 return err; 210 if (err) 211 return -FDT_ERR_NOTFOUND; 212 (*upto)++; 213 return node; 214 } 215 216 int fdtdec_find_aliases_for_id(const void *blob, const char *name, 217 enum fdt_compat_id id, int *node_list, int maxcount) 218 { 219 memset(node_list, '\0', sizeof(*node_list) * maxcount); 220 221 return fdtdec_add_aliases_for_id(blob, name, id, node_list, maxcount); 222 } 223 224 /* TODO: Can we tighten this code up a little? */ 225 int fdtdec_add_aliases_for_id(const void *blob, const char *name, 226 enum fdt_compat_id id, int *node_list, int maxcount) 227 { 228 int name_len = strlen(name); 229 int nodes[maxcount]; 230 int num_found = 0; 231 int offset, node; 232 int alias_node; 233 int count; 234 int i, j; 235 236 /* find the alias node if present */ 237 alias_node = fdt_path_offset(blob, "/aliases"); 238 239 /* 240 * start with nothing, and we can assume that the root node can't 241 * match 242 */ 243 memset(nodes, '\0', sizeof(nodes)); 244 245 /* First find all the compatible nodes */ 246 for (node = count = 0; node >= 0 && count < maxcount;) { 247 node = fdtdec_next_compatible(blob, node, id); 248 if (node >= 0) 249 nodes[count++] = node; 250 } 251 if (node >= 0) 252 debug("%s: warning: maxcount exceeded with alias '%s'\n", 253 __func__, name); 254 255 /* Now find all the aliases */ 256 for (offset = fdt_first_property_offset(blob, alias_node); 257 offset > 0; 258 offset = fdt_next_property_offset(blob, offset)) { 259 const struct fdt_property *prop; 260 const char *path; 261 int number; 262 int found; 263 264 node = 0; 265 prop = fdt_get_property_by_offset(blob, offset, NULL); 266 path = fdt_string(blob, fdt32_to_cpu(prop->nameoff)); 267 if (prop->len && 0 == strncmp(path, name, name_len)) 268 node = fdt_path_offset(blob, prop->data); 269 if (node <= 0) 270 continue; 271 272 /* Get the alias number */ 273 number = simple_strtoul(path + name_len, NULL, 10); 274 if (number < 0 || number >= maxcount) { 275 debug("%s: warning: alias '%s' is out of range\n", 276 __func__, path); 277 continue; 278 } 279 280 /* Make sure the node we found is actually in our list! */ 281 found = -1; 282 for (j = 0; j < count; j++) 283 if (nodes[j] == node) { 284 found = j; 285 break; 286 } 287 288 if (found == -1) { 289 debug("%s: warning: alias '%s' points to a node " 290 "'%s' that is missing or is not compatible " 291 " with '%s'\n", __func__, path, 292 fdt_get_name(blob, node, NULL), 293 compat_names[id]); 294 continue; 295 } 296 297 /* 298 * Add this node to our list in the right place, and mark 299 * it as done. 300 */ 301 if (fdtdec_get_is_enabled(blob, node)) { 302 if (node_list[number]) { 303 debug("%s: warning: alias '%s' requires that " 304 "a node be placed in the list in a " 305 "position which is already filled by " 306 "node '%s'\n", __func__, path, 307 fdt_get_name(blob, node, NULL)); 308 continue; 309 } 310 node_list[number] = node; 311 if (number >= num_found) 312 num_found = number + 1; 313 } 314 nodes[found] = 0; 315 } 316 317 /* Add any nodes not mentioned by an alias */ 318 for (i = j = 0; i < maxcount; i++) { 319 if (!node_list[i]) { 320 for (; j < maxcount; j++) 321 if (nodes[j] && 322 fdtdec_get_is_enabled(blob, nodes[j])) 323 break; 324 325 /* Have we run out of nodes to add? */ 326 if (j == maxcount) 327 break; 328 329 assert(!node_list[i]); 330 node_list[i] = nodes[j++]; 331 if (i >= num_found) 332 num_found = i + 1; 333 } 334 } 335 336 return num_found; 337 } 338 339 int fdtdec_check_fdt(void) 340 { 341 /* 342 * We must have an FDT, but we cannot panic() yet since the console 343 * is not ready. So for now, just assert(). Boards which need an early 344 * FDT (prior to console ready) will need to make their own 345 * arrangements and do their own checks. 346 */ 347 assert(!fdtdec_prepare_fdt()); 348 return 0; 349 } 350 351 /* 352 * This function is a little odd in that it accesses global data. At some 353 * point if the architecture board.c files merge this will make more sense. 354 * Even now, it is common code. 355 */ 356 int fdtdec_prepare_fdt(void) 357 { 358 if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) || 359 fdt_check_header(gd->fdt_blob)) { 360 printf("No valid FDT found - please append one to U-Boot " 361 "binary, use u-boot-dtb.bin or define " 362 "CONFIG_OF_EMBED. For sandbox, use -d <file.dtb>\n"); 363 return -1; 364 } 365 return 0; 366 } 367 368 int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name) 369 { 370 const u32 *phandle; 371 int lookup; 372 373 debug("%s: %s\n", __func__, prop_name); 374 phandle = fdt_getprop(blob, node, prop_name, NULL); 375 if (!phandle) 376 return -FDT_ERR_NOTFOUND; 377 378 lookup = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*phandle)); 379 return lookup; 380 } 381 382 /** 383 * Look up a property in a node and check that it has a minimum length. 384 * 385 * @param blob FDT blob 386 * @param node node to examine 387 * @param prop_name name of property to find 388 * @param min_len minimum property length in bytes 389 * @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not 390 found, or -FDT_ERR_BADLAYOUT if not enough data 391 * @return pointer to cell, which is only valid if err == 0 392 */ 393 static const void *get_prop_check_min_len(const void *blob, int node, 394 const char *prop_name, int min_len, int *err) 395 { 396 const void *cell; 397 int len; 398 399 debug("%s: %s\n", __func__, prop_name); 400 cell = fdt_getprop(blob, node, prop_name, &len); 401 if (!cell) 402 *err = -FDT_ERR_NOTFOUND; 403 else if (len < min_len) 404 *err = -FDT_ERR_BADLAYOUT; 405 else 406 *err = 0; 407 return cell; 408 } 409 410 int fdtdec_get_int_array(const void *blob, int node, const char *prop_name, 411 u32 *array, int count) 412 { 413 const u32 *cell; 414 int i, err = 0; 415 416 debug("%s: %s\n", __func__, prop_name); 417 cell = get_prop_check_min_len(blob, node, prop_name, 418 sizeof(u32) * count, &err); 419 if (!err) { 420 for (i = 0; i < count; i++) 421 array[i] = fdt32_to_cpu(cell[i]); 422 } 423 return err; 424 } 425 426 const u32 *fdtdec_locate_array(const void *blob, int node, 427 const char *prop_name, int count) 428 { 429 const u32 *cell; 430 int err; 431 432 cell = get_prop_check_min_len(blob, node, prop_name, 433 sizeof(u32) * count, &err); 434 return err ? NULL : cell; 435 } 436 437 int fdtdec_get_bool(const void *blob, int node, const char *prop_name) 438 { 439 const s32 *cell; 440 int len; 441 442 debug("%s: %s\n", __func__, prop_name); 443 cell = fdt_getprop(blob, node, prop_name, &len); 444 return cell != NULL; 445 } 446 447 /** 448 * Decode a list of GPIOs from an FDT. This creates a list of GPIOs with no 449 * terminating item. 450 * 451 * @param blob FDT blob to use 452 * @param node Node to look at 453 * @param prop_name Node property name 454 * @param gpio Array of gpio elements to fill from FDT. This will be 455 * untouched if either 0 or an error is returned 456 * @param max_count Maximum number of elements allowed 457 * @return number of GPIOs read if ok, -FDT_ERR_BADLAYOUT if max_count would 458 * be exceeded, or -FDT_ERR_NOTFOUND if the property is missing. 459 */ 460 int fdtdec_decode_gpios(const void *blob, int node, const char *prop_name, 461 struct fdt_gpio_state *gpio, int max_count) 462 { 463 const struct fdt_property *prop; 464 const u32 *cell; 465 const char *name; 466 int len, i; 467 468 debug("%s: %s\n", __func__, prop_name); 469 assert(max_count > 0); 470 prop = fdt_get_property(blob, node, prop_name, &len); 471 if (!prop) { 472 debug("%s: property '%s' missing\n", __func__, prop_name); 473 return -FDT_ERR_NOTFOUND; 474 } 475 476 /* We will use the name to tag the GPIO */ 477 name = fdt_string(blob, fdt32_to_cpu(prop->nameoff)); 478 cell = (u32 *)prop->data; 479 len /= sizeof(u32) * 3; /* 3 cells per GPIO record */ 480 if (len > max_count) { 481 debug(" %s: too many GPIOs / cells for " 482 "property '%s'\n", __func__, prop_name); 483 return -FDT_ERR_BADLAYOUT; 484 } 485 486 /* Read out the GPIO data from the cells */ 487 for (i = 0; i < len; i++, cell += 3) { 488 gpio[i].gpio = fdt32_to_cpu(cell[1]); 489 gpio[i].flags = fdt32_to_cpu(cell[2]); 490 gpio[i].name = name; 491 } 492 493 return len; 494 } 495 496 int fdtdec_decode_gpio(const void *blob, int node, const char *prop_name, 497 struct fdt_gpio_state *gpio) 498 { 499 int err; 500 501 debug("%s: %s\n", __func__, prop_name); 502 gpio->gpio = FDT_GPIO_NONE; 503 gpio->name = NULL; 504 err = fdtdec_decode_gpios(blob, node, prop_name, gpio, 1); 505 return err == 1 ? 0 : err; 506 } 507 508 int fdtdec_get_gpio(struct fdt_gpio_state *gpio) 509 { 510 int val; 511 512 if (!fdt_gpio_isvalid(gpio)) 513 return -1; 514 515 val = gpio_get_value(gpio->gpio); 516 return gpio->flags & FDT_GPIO_ACTIVE_LOW ? val ^ 1 : val; 517 } 518 519 int fdtdec_set_gpio(struct fdt_gpio_state *gpio, int val) 520 { 521 if (!fdt_gpio_isvalid(gpio)) 522 return -1; 523 524 val = gpio->flags & FDT_GPIO_ACTIVE_LOW ? val ^ 1 : val; 525 return gpio_set_value(gpio->gpio, val); 526 } 527 528 int fdtdec_setup_gpio(struct fdt_gpio_state *gpio) 529 { 530 /* 531 * Return success if there is no GPIO defined. This is used for 532 * optional GPIOs) 533 */ 534 if (!fdt_gpio_isvalid(gpio)) 535 return 0; 536 537 if (gpio_request(gpio->gpio, gpio->name)) 538 return -1; 539 return 0; 540 } 541 542 int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name, 543 u8 *array, int count) 544 { 545 const u8 *cell; 546 int err; 547 548 cell = get_prop_check_min_len(blob, node, prop_name, count, &err); 549 if (!err) 550 memcpy(array, cell, count); 551 return err; 552 } 553 554 const u8 *fdtdec_locate_byte_array(const void *blob, int node, 555 const char *prop_name, int count) 556 { 557 const u8 *cell; 558 int err; 559 560 cell = get_prop_check_min_len(blob, node, prop_name, count, &err); 561 if (err) 562 return NULL; 563 return cell; 564 } 565 566 int fdtdec_get_config_int(const void *blob, const char *prop_name, 567 int default_val) 568 { 569 int config_node; 570 571 debug("%s: %s\n", __func__, prop_name); 572 config_node = fdt_path_offset(blob, "/config"); 573 if (config_node < 0) 574 return default_val; 575 return fdtdec_get_int(blob, config_node, prop_name, default_val); 576 } 577 578 int fdtdec_get_config_bool(const void *blob, const char *prop_name) 579 { 580 int config_node; 581 const void *prop; 582 583 debug("%s: %s\n", __func__, prop_name); 584 config_node = fdt_path_offset(blob, "/config"); 585 if (config_node < 0) 586 return 0; 587 prop = fdt_get_property(blob, config_node, prop_name, NULL); 588 589 return prop != NULL; 590 } 591 592 char *fdtdec_get_config_string(const void *blob, const char *prop_name) 593 { 594 const char *nodep; 595 int nodeoffset; 596 int len; 597 598 debug("%s: %s\n", __func__, prop_name); 599 nodeoffset = fdt_path_offset(blob, "/config"); 600 if (nodeoffset < 0) 601 return NULL; 602 603 nodep = fdt_getprop(blob, nodeoffset, prop_name, &len); 604 if (!nodep) 605 return NULL; 606 607 return (char *)nodep; 608 } 609 610 int fdtdec_decode_region(const void *blob, int node, 611 const char *prop_name, void **ptrp, size_t *size) 612 { 613 const fdt_addr_t *cell; 614 int len; 615 616 debug("%s: %s\n", __func__, prop_name); 617 cell = fdt_getprop(blob, node, prop_name, &len); 618 if (!cell || (len != sizeof(fdt_addr_t) * 2)) 619 return -1; 620 621 *ptrp = map_sysmem(fdt_addr_to_cpu(*cell), *size); 622 *size = fdt_size_to_cpu(cell[1]); 623 debug("%s: size=%zx\n", __func__, *size); 624 return 0; 625 } 626 627 /** 628 * Read a flash entry from the fdt 629 * 630 * @param blob FDT blob 631 * @param node Offset of node to read 632 * @param name Name of node being read 633 * @param entry Place to put offset and size of this node 634 * @return 0 if ok, -ve on error 635 */ 636 int fdtdec_read_fmap_entry(const void *blob, int node, const char *name, 637 struct fmap_entry *entry) 638 { 639 u32 reg[2]; 640 641 if (fdtdec_get_int_array(blob, node, "reg", reg, 2)) { 642 debug("Node '%s' has bad/missing 'reg' property\n", name); 643 return -FDT_ERR_NOTFOUND; 644 } 645 entry->offset = reg[0]; 646 entry->length = reg[1]; 647 648 return 0; 649 } 650 #else 651 #include "libfdt.h" 652 #include "fdt_support.h" 653 654 int fdtdec_get_int(const void *blob, int node, const char *prop_name, 655 int default_val) 656 { 657 const int *cell; 658 int len; 659 660 cell = fdt_getprop_w((void *)blob, node, prop_name, &len); 661 if (cell && len >= sizeof(int)) { 662 int val = fdt32_to_cpu(cell[0]); 663 664 return val; 665 } 666 return default_val; 667 } 668 #endif 669