drivers/core/ofnode.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 2017 Google, Inc
   4  * Written by Simon Glass <sjg@chromium.org>
   5  */
   6
   7 #include <common.h>
   8 #include <dm.h>
   9 #include <fdtdec.h>
  10 #include <fdt_support.h>
  11 #include <log.h>
  12 #include <malloc.h>
  13 #include <linux/libfdt.h>
  14 #include <dm/of_access.h>
  15 #include <dm/of_addr.h>
  16 #include <dm/ofnode.h>
  17 #include <linux/err.h>
  18 #include <linux/ioport.h>
  19 #include <asm/global_data.h>
  20
  21 int ofnode_read_u32(ofnode node, const char *propname, u32 *outp)
  22 {
  23         return ofnode_read_u32_index(node, propname, 0, outp);
  24 }
  25
  26 u32 ofnode_read_u32_default(ofnode node, const char *propname, u32 def)
  27 {
  28         assert(ofnode_valid(node));
  29         ofnode_read_u32_index(node, propname, 0, &def);
  30
  31         return def;
  32 }
  33
  34 int ofnode_read_u32_index(ofnode node, const char *propname, int index,
  35                           u32 *outp)
  36 {
  37         const fdt32_t *cell;
  38         int len;
  39
  40         assert(ofnode_valid(node));
  41         debug("%s: %s: ", __func__, propname);
  42
  43         if (ofnode_is_np(node))
  44                 return of_read_u32_index(ofnode_to_np(node), propname, index,
  45                                          outp);
  46
  47         cell = fdt_getprop(gd->fdt_blob, ofnode_to_offset(node), propname,
  48                            &len);
  49         if (!cell) {
  50                 debug("(not found)\n");
  51                 return -EINVAL;
  52         }
  53
  54         if (len < (sizeof(int) * (index + 1))) {
  55                 debug("(not large enough)\n");
  56                 return -EOVERFLOW;
  57         }
  58
  59         *outp = fdt32_to_cpu(cell[index]);
  60         debug("%#x (%d)\n", *outp, *outp);
  61
  62         return 0;
  63 }
  64
  65 u32 ofnode_read_u32_index_default(ofnode node, const char *propname, int index,
  66                                   u32 def)
  67 {
  68         assert(ofnode_valid(node));
  69         ofnode_read_u32_index(node, propname, index, &def);
  70
  71         return def;
  72 }
  73
  74 int ofnode_read_s32_default(ofnode node, const char *propname, s32 def)
  75 {
  76         assert(ofnode_valid(node));
  77         ofnode_read_u32(node, propname, (u32 *)&def);
  78
  79         return def;
  80 }
  81
  82 int ofnode_read_u64(ofnode node, const char *propname, u64 *outp)
  83 {
  84         const unaligned_fdt64_t *cell;
  85         int len;
  86
  87         assert(ofnode_valid(node));
  88         debug("%s: %s: ", __func__, propname);
  89
  90         if (ofnode_is_np(node))
  91                 return of_read_u64(ofnode_to_np(node), propname, outp);
  92
  93         cell = fdt_getprop(gd->fdt_blob, ofnode_to_offset(node), propname,
  94                            &len);
  95         if (!cell || len < sizeof(*cell)) {
  96                 debug("(not found)\n");
  97                 return -EINVAL;
  98         }
  99         *outp = fdt64_to_cpu(cell[0]);
 100         debug("%#llx (%lld)\n", (unsigned long long)*outp,
 101               (unsigned long long)*outp);
 102
 103         return 0;
 104 }
 105
 106 u64 ofnode_read_u64_default(ofnode node, const char *propname, u64 def)
 107 {
 108         assert(ofnode_valid(node));
 109         ofnode_read_u64(node, propname, &def);
 110
 111         return def;
 112 }
 113
 114 bool ofnode_read_bool(ofnode node, const char *propname)
 115 {
 116         const void *prop;
 117
 118         assert(ofnode_valid(node));
 119         debug("%s: %s: ", __func__, propname);
 120
 121         prop = ofnode_get_property(node, propname, NULL);
 122
 123         debug("%s\n", prop ? "true" : "false");
 124
 125         return prop ? true : false;
 126 }
 127
 128 const void *ofnode_read_prop(ofnode node, const char *propname, int *sizep)
 129 {
 130         const char *val = NULL;
 131         int len;
 132
 133         assert(ofnode_valid(node));
 134         debug("%s: %s: ", __func__, propname);
 135
 136         if (ofnode_is_np(node)) {
 137                 struct property *prop = of_find_property(
 138                                 ofnode_to_np(node), propname, &len);
 139
 140                 if (prop) {
 141                         val = prop->value;
 142                         len = prop->length;
 143                 }
 144         } else {
 145                 val = fdt_getprop(gd->fdt_blob, ofnode_to_offset(node),
 146                                   propname, &len);
 147         }
 148         if (!val) {
 149                 debug("<not found>\n");
 150                 if (sizep)
 151                         *sizep = -FDT_ERR_NOTFOUND;
 152                 return NULL;
 153         }
 154         if (sizep)
 155                 *sizep = len;
 156
 157         return val;
 158 }
 159
 160 const char *ofnode_read_string(ofnode node, const char *propname)
 161 {
 162         const char *str;
 163         int len;
 164
 165         str = ofnode_read_prop(node, propname, &len);
 166         if (!str)
 167                 return NULL;
 168
 169         if (strnlen(str, len) >= len) {
 170                 debug("<invalid>\n");
 171                 return NULL;
 172         }
 173         debug("%s\n", str);
 174
 175         return str;
 176 }
 177
 178 int ofnode_read_size(ofnode node, const char *propname)
 179 {
 180         int len;
 181
 182         if (!ofnode_read_prop(node, propname, &len))
 183                 return -EINVAL;
 184
 185         return len;
 186 }
 187
 188 ofnode ofnode_find_subnode(ofnode node, const char *subnode_name)
 189 {
 190         ofnode subnode;
 191
 192         assert(ofnode_valid(node));
 193         debug("%s: %s: ", __func__, subnode_name);
 194
 195         if (ofnode_is_np(node)) {
 196                 const struct device_node *np = ofnode_to_np(node);
 197
 198                 for (np = np->child; np; np = np->sibling) {
 199                         if (!strcmp(subnode_name, np->name))
 200                                 break;
 201                 }
 202                 subnode = np_to_ofnode(np);
 203         } else {
 204                 int ooffset = fdt_subnode_offset(gd->fdt_blob,
 205                                 ofnode_to_offset(node), subnode_name);
 206                 subnode = offset_to_ofnode(ooffset);
 207         }
 208         debug("%s\n", ofnode_valid(subnode) ?
 209               ofnode_get_name(subnode) : "<none>");
 210
 211         return subnode;
 212 }
 213
 214 int ofnode_read_u32_array(ofnode node, const char *propname,
 215                           u32 *out_values, size_t sz)
 216 {
 217         assert(ofnode_valid(node));
 218         debug("%s: %s: ", __func__, propname);
 219
 220         if (ofnode_is_np(node)) {
 221                 return of_read_u32_array(ofnode_to_np(node), propname,
 222                                          out_values, sz);
 223         } else {
 224                 return fdtdec_get_int_array(gd->fdt_blob,
 225                                             ofnode_to_offset(node), propname,
 226                                             out_values, sz);
 227         }
 228 }
 229
 230 #if !CONFIG_IS_ENABLED(DM_INLINE_OFNODE)
 231 bool ofnode_is_enabled(ofnode node)
 232 {
 233         if (ofnode_is_np(node)) {
 234                 return of_device_is_available(ofnode_to_np(node));
 235         } else {
 236                 return fdtdec_get_is_enabled(gd->fdt_blob,
 237                                              ofnode_to_offset(node));
 238         }
 239 }
 240
 241 ofnode ofnode_first_subnode(ofnode node)
 242 {
 243         assert(ofnode_valid(node));
 244         if (ofnode_is_np(node))
 245                 return np_to_ofnode(node.np->child);
 246
 247         return offset_to_ofnode(
 248                 fdt_first_subnode(gd->fdt_blob, ofnode_to_offset(node)));
 249 }
 250
 251 ofnode ofnode_next_subnode(ofnode node)
 252 {
 253         assert(ofnode_valid(node));
 254         if (ofnode_is_np(node))
 255                 return np_to_ofnode(node.np->sibling);
 256
 257         return offset_to_ofnode(
 258                 fdt_next_subnode(gd->fdt_blob, ofnode_to_offset(node)));
 259 }
 260 #endif /* !DM_INLINE_OFNODE */
 261
 262 ofnode ofnode_get_parent(ofnode node)
 263 {
 264         ofnode parent;
 265
 266         assert(ofnode_valid(node));
 267         if (ofnode_is_np(node))
 268                 parent = np_to_ofnode(of_get_parent(ofnode_to_np(node)));
 269         else
 270                 parent.of_offset = fdt_parent_offset(gd->fdt_blob,
 271                                                      ofnode_to_offset(node));
 272
 273         return parent;
 274 }
 275
 276 const char *ofnode_get_name(ofnode node)
 277 {
 278         if (!ofnode_valid(node)) {
 279                 debug("%s node not valid\n", __func__);
 280                 return NULL;
 281         }
 282
 283         if (ofnode_is_np(node))
 284                 return strrchr(node.np->full_name, '/') + 1;
 285
 286         return fdt_get_name(gd->fdt_blob, ofnode_to_offset(node), NULL);
 287 }
 288
 289 ofnode ofnode_get_by_phandle(uint phandle)
 290 {
 291         ofnode node;
 292
 293         if (of_live_active())
 294                 node = np_to_ofnode(of_find_node_by_phandle(phandle));
 295         else
 296                 node.of_offset = fdt_node_offset_by_phandle(gd->fdt_blob,
 297                                                             phandle);
 298
 299         return node;
 300 }
 301
 302 static fdt_addr_t __ofnode_get_addr_size_index(ofnode node, int index,
 303                                                fdt_size_t *size, bool translate)
 304 {
 305         int na, ns;
 306
 307         *size = FDT_SIZE_T_NONE;
 308
 309         if (ofnode_is_np(node)) {
 310                 const __be32 *prop_val;
 311                 u64 size64;
 312                 uint flags;
 313
 314                 prop_val = of_get_address(ofnode_to_np(node), index, &size64,
 315                                           &flags);
 316                 if (!prop_val)
 317                         return FDT_ADDR_T_NONE;
 318                 if (size)
 319                         *size = size64;
 320
 321                 ns = of_n_size_cells(ofnode_to_np(node));
 322
 323                 if (translate && IS_ENABLED(CONFIG_OF_TRANSLATE) && ns > 0) {
 324                         return of_translate_address(ofnode_to_np(node), prop_val);
 325                 } else {
 326                         na = of_n_addr_cells(ofnode_to_np(node));
 327                         return of_read_number(prop_val, na);
 328                 }
 329         } else {
 330                 na = ofnode_read_simple_addr_cells(ofnode_get_parent(node));
 331                 ns = ofnode_read_simple_size_cells(ofnode_get_parent(node));
 332                 return fdtdec_get_addr_size_fixed(gd->fdt_blob,
 333                                                   ofnode_to_offset(node), "reg",
 334                                                   index, na, ns, size,
 335                                                   translate);
 336         }
 337
 338         return FDT_ADDR_T_NONE;
 339 }
 340
 341 fdt_addr_t ofnode_get_addr_size_index(ofnode node, int index, fdt_size_t *size)
 342 {
 343         return __ofnode_get_addr_size_index(node, index, size, true);
 344 }
 345
 346 fdt_addr_t ofnode_get_addr_size_index_notrans(ofnode node, int index,
 347                                               fdt_size_t *size)
 348 {
 349         return __ofnode_get_addr_size_index(node, index, size, false);
 350 }
 351
 352 fdt_addr_t ofnode_get_addr_index(ofnode node, int index)
 353 {
 354         fdt_size_t size;
 355
 356         return ofnode_get_addr_size_index(node, index, &size);
 357 }
 358
 359 fdt_addr_t ofnode_get_addr(ofnode node)
 360 {
 361         return ofnode_get_addr_index(node, 0);
 362 }
 363
 364 fdt_size_t ofnode_get_size(ofnode node)
 365 {
 366         fdt_size_t size;
 367
 368         ofnode_get_addr_size_index(node, 0, &size);
 369
 370         return size;
 371 }
 372
 373 int ofnode_stringlist_search(ofnode node, const char *property,
 374                              const char *string)
 375 {
 376         if (ofnode_is_np(node)) {
 377                 return of_property_match_string(ofnode_to_np(node),
 378                                                 property, string);
 379         } else {
 380                 int ret;
 381
 382                 ret = fdt_stringlist_search(gd->fdt_blob,
 383                                             ofnode_to_offset(node), property,
 384                                             string);
 385                 if (ret == -FDT_ERR_NOTFOUND)
 386                         return -ENODATA;
 387                 else if (ret < 0)
 388                         return -EINVAL;
 389
 390                 return ret;
 391         }
 392 }
 393
 394 int ofnode_read_string_index(ofnode node, const char *property, int index,
 395                              const char **outp)
 396 {
 397         if (ofnode_is_np(node)) {
 398                 return of_property_read_string_index(ofnode_to_np(node),
 399                                                      property, index, outp);
 400         } else {
 401                 int len;
 402
 403                 *outp = fdt_stringlist_get(gd->fdt_blob, ofnode_to_offset(node),
 404                                            property, index, &len);
 405                 if (len < 0)
 406                         return -EINVAL;
 407                 return 0;
 408         }
 409 }
 410
 411 int ofnode_read_string_count(ofnode node, const char *property)
 412 {
 413         if (ofnode_is_np(node)) {
 414                 return of_property_count_strings(ofnode_to_np(node), property);
 415         } else {
 416                 return fdt_stringlist_count(gd->fdt_blob,
 417                                             ofnode_to_offset(node), property);
 418         }
 419 }
 420
 421 static void ofnode_from_fdtdec_phandle_args(struct fdtdec_phandle_args *in,
 422                                             struct ofnode_phandle_args *out)
 423 {
 424         assert(OF_MAX_PHANDLE_ARGS == MAX_PHANDLE_ARGS);
 425         out->node = offset_to_ofnode(in->node);
 426         out->args_count = in->args_count;
 427         memcpy(out->args, in->args, sizeof(out->args));
 428 }
 429
 430 static void ofnode_from_of_phandle_args(struct of_phandle_args *in,
 431                                         struct ofnode_phandle_args *out)
 432 {
 433         assert(OF_MAX_PHANDLE_ARGS == MAX_PHANDLE_ARGS);
 434         out->node = np_to_ofnode(in->np);
 435         out->args_count = in->args_count;
 436         memcpy(out->args, in->args, sizeof(out->args));
 437 }
 438
 439 int ofnode_parse_phandle_with_args(ofnode node, const char *list_name,
 440                                    const char *cells_name, int cell_count,
 441                                    int index,
 442                                    struct ofnode_phandle_args *out_args)
 443 {
 444         if (ofnode_is_np(node)) {
 445                 struct of_phandle_args args;
 446                 int ret;
 447
 448                 ret = of_parse_phandle_with_args(ofnode_to_np(node),
 449                                                  list_name, cells_name,
 450                                                  cell_count, index,
 451                                                  &args);
 452                 if (ret)
 453                         return ret;
 454                 ofnode_from_of_phandle_args(&args, out_args);
 455         } else {
 456                 struct fdtdec_phandle_args args;
 457                 int ret;
 458
 459                 ret = fdtdec_parse_phandle_with_args(gd->fdt_blob,
 460                                                      ofnode_to_offset(node),
 461                                                      list_name, cells_name,
 462                                                      cell_count, index, &args);
 463                 if (ret)
 464                         return ret;
 465                 ofnode_from_fdtdec_phandle_args(&args, out_args);
 466         }
 467
 468         return 0;
 469 }
 470
 471 int ofnode_count_phandle_with_args(ofnode node, const char *list_name,
 472                                    const char *cells_name, int cell_count)
 473 {
 474         if (ofnode_is_np(node))
 475                 return of_count_phandle_with_args(ofnode_to_np(node),
 476                                 list_name, cells_name, cell_count);
 477         else
 478                 return fdtdec_parse_phandle_with_args(gd->fdt_blob,
 479                                 ofnode_to_offset(node), list_name, cells_name,
 480                                 cell_count, -1, NULL);
 481 }
 482
 483 ofnode ofnode_path(const char *path)
 484 {
 485         if (of_live_active())
 486                 return np_to_ofnode(of_find_node_by_path(path));
 487         else
 488                 return offset_to_ofnode(fdt_path_offset(gd->fdt_blob, path));
 489 }
 490
 491 const void *ofnode_read_chosen_prop(const char *propname, int *sizep)
 492 {
 493         ofnode chosen_node;
 494
 495         chosen_node = ofnode_path("/chosen");
 496
 497         return ofnode_read_prop(chosen_node, propname, sizep);
 498 }
 499
 500 const char *ofnode_read_chosen_string(const char *propname)
 501 {
 502         return ofnode_read_chosen_prop(propname, NULL);
 503 }
 504
 505 ofnode ofnode_get_chosen_node(const char *name)
 506 {
 507         const char *prop;
 508
 509         prop = ofnode_read_chosen_prop(name, NULL);
 510         if (!prop)
 511                 return ofnode_null();
 512
 513         return ofnode_path(prop);
 514 }
 515
 516 const void *ofnode_read_aliases_prop(const char *propname, int *sizep)
 517 {
 518         ofnode node;
 519
 520         node = ofnode_path("/aliases");
 521
 522         return ofnode_read_prop(node, propname, sizep);
 523 }
 524
 525 ofnode ofnode_get_aliases_node(const char *name)
 526 {
 527         const char *prop;
 528
 529         prop = ofnode_read_aliases_prop(name, NULL);
 530         if (!prop)
 531                 return ofnode_null();
 532
 533         debug("%s: node_path: %s\n", __func__, prop);
 534
 535         return ofnode_path(prop);
 536 }
 537
 538 int ofnode_get_child_count(ofnode parent)
 539 {
 540         ofnode child;
 541         int num = 0;
 542
 543         ofnode_for_each_subnode(child, parent)
 544                 num++;
 545
 546         return num;
 547 }
 548
 549 static int decode_timing_property(ofnode node, const char *name,
 550                                   struct timing_entry *result)
 551 {
 552         int length, ret = 0;
 553
 554         length = ofnode_read_size(node, name);
 555         if (length < 0) {
 556                 debug("%s: could not find property %s\n",
 557                       ofnode_get_name(node), name);
 558                 return length;
 559         }
 560
 561         if (length == sizeof(u32)) {
 562                 result->typ = ofnode_read_u32_default(node, name, 0);
 563                 result->min = result->typ;
 564                 result->max = result->typ;
 565         } else {
 566                 ret = ofnode_read_u32_array(node, name, &result->min, 3);
 567         }
 568
 569         return ret;
 570 }
 571
 572 int ofnode_decode_display_timing(ofnode parent, int index,
 573                                  struct display_timing *dt)
 574 {
 575         int i;
 576         ofnode timings, node;
 577         u32 val = 0;
 578         int ret = 0;
 579
 580         timings = ofnode_find_subnode(parent, "display-timings");
 581         if (!ofnode_valid(timings))
 582                 return -EINVAL;
 583
 584         i = 0;
 585         ofnode_for_each_subnode(node, timings) {
 586                 if (i++ == index)
 587                         break;
 588         }
 589
 590         if (!ofnode_valid(node))
 591                 return -EINVAL;
 592
 593         memset(dt, 0, sizeof(*dt));
 594
 595         ret |= decode_timing_property(node, "hback-porch", &dt->hback_porch);
 596         ret |= decode_timing_property(node, "hfront-porch", &dt->hfront_porch);
 597         ret |= decode_timing_property(node, "hactive", &dt->hactive);
 598         ret |= decode_timing_property(node, "hsync-len", &dt->hsync_len);
 599         ret |= decode_timing_property(node, "vback-porch", &dt->vback_porch);
 600         ret |= decode_timing_property(node, "vfront-porch", &dt->vfront_porch);
 601         ret |= decode_timing_property(node, "vactive", &dt->vactive);
 602         ret |= decode_timing_property(node, "vsync-len", &dt->vsync_len);
 603         ret |= decode_timing_property(node, "clock-frequency", &dt->pixelclock);
 604
 605         dt->flags = 0;
 606         val = ofnode_read_u32_default(node, "vsync-active", -1);
 607         if (val != -1) {
 608                 dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH :
 609                                 DISPLAY_FLAGS_VSYNC_LOW;
 610         }
 611         val = ofnode_read_u32_default(node, "hsync-active", -1);
 612         if (val != -1) {
 613                 dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH :
 614                                 DISPLAY_FLAGS_HSYNC_LOW;
 615         }
 616         val = ofnode_read_u32_default(node, "de-active", -1);
 617         if (val != -1) {
 618                 dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH :
 619                                 DISPLAY_FLAGS_DE_LOW;
 620         }
 621         val = ofnode_read_u32_default(node, "pixelclk-active", -1);
 622         if (val != -1) {
 623                 dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE :
 624                                 DISPLAY_FLAGS_PIXDATA_NEGEDGE;
 625         }
 626
 627         if (ofnode_read_bool(node, "interlaced"))
 628                 dt->flags |= DISPLAY_FLAGS_INTERLACED;
 629         if (ofnode_read_bool(node, "doublescan"))
 630                 dt->flags |= DISPLAY_FLAGS_DOUBLESCAN;
 631         if (ofnode_read_bool(node, "doubleclk"))
 632                 dt->flags |= DISPLAY_FLAGS_DOUBLECLK;
 633
 634         return ret;
 635 }
 636
 637 const void *ofnode_get_property(ofnode node, const char *propname, int *lenp)
 638 {
 639         if (ofnode_is_np(node))
 640                 return of_get_property(ofnode_to_np(node), propname, lenp);
 641         else
 642                 return fdt_getprop(gd->fdt_blob, ofnode_to_offset(node),
 643                                    propname, lenp);
 644 }
 645
 646 int ofnode_get_first_property(ofnode node, struct ofprop *prop)
 647 {
 648         prop->node = node;
 649
 650         if (ofnode_is_np(node)) {
 651                 prop->prop = of_get_first_property(ofnode_to_np(prop->node));
 652                 if (!prop->prop)
 653                         return -FDT_ERR_NOTFOUND;
 654         } else {
 655                 prop->offset =
 656                         fdt_first_property_offset(gd->fdt_blob,
 657                                                   ofnode_to_offset(prop->node));
 658                 if (prop->offset < 0)
 659                         return prop->offset;
 660         }
 661
 662         return 0;
 663 }
 664
 665 int ofnode_get_next_property(struct ofprop *prop)
 666 {
 667         if (ofnode_is_np(prop->node)) {
 668                 prop->prop = of_get_next_property(ofnode_to_np(prop->node),
 669                                                   prop->prop);
 670                 if (!prop->prop)
 671                         return -FDT_ERR_NOTFOUND;
 672         } else {
 673                 prop->offset = fdt_next_property_offset(gd->fdt_blob,
 674                                                         prop->offset);
 675                 if (prop->offset  < 0)
 676                         return prop->offset;
 677         }
 678
 679         return 0;
 680 }
 681
 682 const void *ofnode_get_property_by_prop(const struct ofprop *prop,
 683                                         const char **propname, int *lenp)
 684 {
 685         if (ofnode_is_np(prop->node))
 686                 return of_get_property_by_prop(ofnode_to_np(prop->node),
 687                                                prop->prop, propname, lenp);
 688         else
 689                 return fdt_getprop_by_offset(gd->fdt_blob,
 690                                              prop->offset,
 691                                              propname, lenp);
 692 }
 693
 694 bool ofnode_is_available(ofnode node)
 695 {
 696         if (ofnode_is_np(node))
 697                 return of_device_is_available(ofnode_to_np(node));
 698         else
 699                 return fdtdec_get_is_enabled(gd->fdt_blob,
 700                                              ofnode_to_offset(node));
 701 }
 702
 703 fdt_addr_t ofnode_get_addr_size(ofnode node, const char *property,
 704                                 fdt_size_t *sizep)
 705 {
 706         if (ofnode_is_np(node)) {
 707                 int na, ns;
 708                 int psize;
 709                 const struct device_node *np = ofnode_to_np(node);
 710                 const __be32 *prop = of_get_property(np, property, &psize);
 711
 712                 if (!prop)
 713                         return FDT_ADDR_T_NONE;
 714                 na = of_n_addr_cells(np);
 715                 ns = of_n_size_cells(np);
 716                 *sizep = of_read_number(prop + na, ns);
 717
 718                 if (CONFIG_IS_ENABLED(OF_TRANSLATE) && ns > 0)
 719                         return of_translate_address(np, prop);
 720                 else
 721                         return of_read_number(prop, na);
 722         } else {
 723                 return fdtdec_get_addr_size(gd->fdt_blob,
 724                                             ofnode_to_offset(node), property,
 725                                             sizep);
 726         }
 727 }
 728
 729 const uint8_t *ofnode_read_u8_array_ptr(ofnode node, const char *propname,
 730                                         size_t sz)
 731 {
 732         if (ofnode_is_np(node)) {
 733                 const struct device_node *np = ofnode_to_np(node);
 734                 int psize;
 735                 const __be32 *prop = of_get_property(np, propname, &psize);
 736
 737                 if (!prop || sz != psize)
 738                         return NULL;
 739                 return (uint8_t *)prop;
 740
 741         } else {
 742                 return fdtdec_locate_byte_array(gd->fdt_blob,
 743                                 ofnode_to_offset(node), propname, sz);
 744         }
 745 }
 746
 747 int ofnode_read_pci_addr(ofnode node, enum fdt_pci_space type,
 748                          const char *propname, struct fdt_pci_addr *addr)
 749 {
 750         const fdt32_t *cell;
 751         int len;
 752         int ret = -ENOENT;
 753
 754         debug("%s: %s: ", __func__, propname);
 755
 756         /*
 757          * If we follow the pci bus bindings strictly, we should check
 758          * the value of the node's parent node's #address-cells and
 759          * #size-cells. They need to be 3 and 2 accordingly. However,
 760          * for simplicity we skip the check here.
 761          */
 762         cell = ofnode_get_property(node, propname, &len);
 763         if (!cell)
 764                 goto fail;
 765
 766         if ((len % FDT_PCI_REG_SIZE) == 0) {
 767                 int num = len / FDT_PCI_REG_SIZE;
 768                 int i;
 769
 770                 for (i = 0; i < num; i++) {
 771                         debug("pci address #%d: %08lx %08lx %08lx\n", i,
 772                               (ulong)fdt32_to_cpu(cell[0]),
 773                               (ulong)fdt32_to_cpu(cell[1]),
 774                               (ulong)fdt32_to_cpu(cell[2]));
 775                         if ((fdt32_to_cpu(*cell) & type) == type) {
 776                                 addr->phys_hi = fdt32_to_cpu(cell[0]);
 777                                 addr->phys_mid = fdt32_to_cpu(cell[1]);
 778                                 addr->phys_lo = fdt32_to_cpu(cell[2]);
 779                                 break;
 780                         }
 781
 782                         cell += (FDT_PCI_ADDR_CELLS +
 783                                  FDT_PCI_SIZE_CELLS);
 784                 }
 785
 786                 if (i == num) {
 787                         ret = -ENXIO;
 788                         goto fail;
 789                 }
 790
 791                 return 0;
 792         }
 793
 794         ret = -EINVAL;
 795
 796 fail:
 797         debug("(not found)\n");
 798         return ret;
 799 }
 800
 801 int ofnode_read_pci_vendev(ofnode node, u16 *vendor, u16 *device)
 802 {
 803         const char *list, *end;
 804         int len;
 805
 806         list = ofnode_get_property(node, "compatible", &len);
 807         if (!list)
 808                 return -ENOENT;
 809
 810         end = list + len;
 811         while (list < end) {
 812                 len = strlen(list);
 813                 if (len >= strlen("pciVVVV,DDDD")) {
 814                         char *s = strstr(list, "pci");
 815
 816                         /*
 817                          * check if the string is something like pciVVVV,DDDD.RR
 818                          * or just pciVVVV,DDDD
 819                          */
 820                         if (s && s[7] == ',' &&
 821                             (s[12] == '.' || s[12] == 0)) {
 822                                 s += 3;
 823                                 *vendor = simple_strtol(s, NULL, 16);
 824
 825                                 s += 5;
 826                                 *device = simple_strtol(s, NULL, 16);
 827
 828                                 return 0;
 829                         }
 830                 }
 831                 list += (len + 1);
 832         }
 833
 834         return -ENOENT;
 835 }
 836
 837 int ofnode_read_addr_cells(ofnode node)
 838 {
 839         if (ofnode_is_np(node)) {
 840                 return of_n_addr_cells(ofnode_to_np(node));
 841         } else {
 842                 int parent = fdt_parent_offset(gd->fdt_blob,
 843                                                ofnode_to_offset(node));
 844
 845                 return fdt_address_cells(gd->fdt_blob, parent);
 846         }
 847 }
 848
 849 int ofnode_read_size_cells(ofnode node)
 850 {
 851         if (ofnode_is_np(node)) {
 852                 return of_n_size_cells(ofnode_to_np(node));
 853         } else {
 854                 int parent = fdt_parent_offset(gd->fdt_blob,
 855                                                ofnode_to_offset(node));
 856
 857                 return fdt_size_cells(gd->fdt_blob, parent);
 858         }
 859 }
 860
 861 int ofnode_read_simple_addr_cells(ofnode node)
 862 {
 863         if (ofnode_is_np(node))
 864                 return of_simple_addr_cells(ofnode_to_np(node));
 865         else
 866                 return fdt_address_cells(gd->fdt_blob, ofnode_to_offset(node));
 867 }
 868
 869 int ofnode_read_simple_size_cells(ofnode node)
 870 {
 871         if (ofnode_is_np(node))
 872                 return of_simple_size_cells(ofnode_to_np(node));
 873         else
 874                 return fdt_size_cells(gd->fdt_blob, ofnode_to_offset(node));
 875 }
 876
 877 bool ofnode_pre_reloc(ofnode node)
 878 {
 879 #if defined(CONFIG_SPL_BUILD) || defined(CONFIG_TPL_BUILD)
 880         /* for SPL and TPL the remaining nodes after the fdtgrep 1st pass
 881          * had property dm-pre-reloc or u-boot,dm-spl/tpl.
 882          * They are removed in final dtb (fdtgrep 2nd pass)
 883          */
 884         return true;
 885 #else
 886         if (ofnode_read_bool(node, "u-boot,dm-pre-reloc"))
 887                 return true;
 888         if (ofnode_read_bool(node, "u-boot,dm-pre-proper"))
 889                 return true;
 890
 891         /*
 892          * In regular builds individual spl and tpl handling both
 893          * count as handled pre-relocation for later second init.
 894          */
 895         if (ofnode_read_bool(node, "u-boot,dm-spl") ||
 896             ofnode_read_bool(node, "u-boot,dm-tpl"))
 897                 return true;
 898
 899         return false;
 900 #endif
 901 }
 902
 903 int ofnode_read_resource(ofnode node, uint index, struct resource *res)
 904 {
 905         if (ofnode_is_np(node)) {
 906                 return of_address_to_resource(ofnode_to_np(node), index, res);
 907         } else {
 908                 struct fdt_resource fres;
 909                 int ret;
 910
 911                 ret = fdt_get_resource(gd->fdt_blob, ofnode_to_offset(node),
 912                                        "reg", index, &fres);
 913                 if (ret < 0)
 914                         return -EINVAL;
 915                 memset(res, '\0', sizeof(*res));
 916                 res->start = fres.start;
 917                 res->end = fres.end;
 918
 919                 return 0;
 920         }
 921 }
 922
 923 int ofnode_read_resource_byname(ofnode node, const char *name,
 924                                 struct resource *res)
 925 {
 926         int index;
 927
 928         index = ofnode_stringlist_search(node, "reg-names", name);
 929         if (index < 0)
 930                 return index;
 931
 932         return ofnode_read_resource(node, index, res);
 933 }
 934
 935 u64 ofnode_translate_address(ofnode node, const fdt32_t *in_addr)
 936 {
 937         if (ofnode_is_np(node))
 938                 return of_translate_address(ofnode_to_np(node), in_addr);
 939         else
 940                 return fdt_translate_address(gd->fdt_blob, ofnode_to_offset(node), in_addr);
 941 }
 942
 943 u64 ofnode_translate_dma_address(ofnode node, const fdt32_t *in_addr)
 944 {
 945         if (ofnode_is_np(node))
 946                 return of_translate_dma_address(ofnode_to_np(node), in_addr);
 947         else
 948                 return fdt_translate_dma_address(gd->fdt_blob, ofnode_to_offset(node), in_addr);
 949 }
 950
 951 int ofnode_get_dma_range(ofnode node, phys_addr_t *cpu, dma_addr_t *bus, u64 *size)
 952 {
 953         if (ofnode_is_np(node))
 954                 return of_get_dma_range(ofnode_to_np(node), cpu, bus, size);
 955         else
 956                 return fdt_get_dma_range(gd->fdt_blob, ofnode_to_offset(node),
 957                                          cpu, bus, size);
 958 }
 959
 960 int ofnode_device_is_compatible(ofnode node, const char *compat)
 961 {
 962         if (ofnode_is_np(node))
 963                 return of_device_is_compatible(ofnode_to_np(node), compat,
 964                                                NULL, NULL);
 965         else
 966                 return !fdt_node_check_compatible(gd->fdt_blob,
 967                                                   ofnode_to_offset(node),
 968                                                   compat);
 969 }
 970
 971 ofnode ofnode_by_compatible(ofnode from, const char *compat)
 972 {
 973         if (of_live_active()) {
 974                 return np_to_ofnode(of_find_compatible_node(
 975                         (struct device_node *)ofnode_to_np(from), NULL,
 976                         compat));
 977         } else {
 978                 return offset_to_ofnode(fdt_node_offset_by_compatible(
 979                                 gd->fdt_blob, ofnode_to_offset(from), compat));
 980         }
 981 }
 982
 983 ofnode ofnode_by_prop_value(ofnode from, const char *propname,
 984                             const void *propval, int proplen)
 985 {
 986         if (of_live_active()) {
 987                 return np_to_ofnode(of_find_node_by_prop_value(
 988                         (struct device_node *)ofnode_to_np(from), propname,
 989                         propval, proplen));
 990         } else {
 991                 return offset_to_ofnode(fdt_node_offset_by_prop_value(
 992                                 gd->fdt_blob, ofnode_to_offset(from),
 993                                 propname, propval, proplen));
 994         }
 995 }
 996
 997 int ofnode_write_prop(ofnode node, const char *propname, int len,
 998                       const void *value)
 999 {
1000         const struct device_node *np = ofnode_to_np(node);
1001         struct property *pp;
1002         struct property *pp_last = NULL;
1003         struct property *new;
1004
1005         if (!of_live_active())
1006                 return -ENOSYS;
1007
1008         if (!np)
1009                 return -EINVAL;
1010
1011         for (pp = np->properties; pp; pp = pp->next) {
1012                 if (strcmp(pp->name, propname) == 0) {
1013                         /* Property exists -> change value */
1014                         pp->value = (void *)value;
1015                         pp->length = len;
1016                         return 0;
1017                 }
1018                 pp_last = pp;
1019         }
1020
1021         if (!pp_last)
1022                 return -ENOENT;
1023
1024         /* Property does not exist -> append new property */
1025         new = malloc(sizeof(struct property));
1026         if (!new)
1027                 return -ENOMEM;
1028
1029         new->name = strdup(propname);
1030         if (!new->name) {
1031                 free(new);
1032                 return -ENOMEM;
1033         }
1034
1035         new->value = (void *)value;
1036         new->length = len;
1037         new->next = NULL;
1038
1039         pp_last->next = new;
1040
1041         return 0;
1042 }
1043
1044 int ofnode_write_string(ofnode node, const char *propname, const char *value)
1045 {
1046         if (!of_live_active())
1047                 return -ENOSYS;
1048
1049         assert(ofnode_valid(node));
1050
1051         debug("%s: %s = %s", __func__, propname, value);
1052
1053         return ofnode_write_prop(node, propname, strlen(value) + 1, value);
1054 }
1055
1056 int ofnode_set_enabled(ofnode node, bool value)
1057 {
1058         if (!of_live_active())
1059                 return -ENOSYS;
1060
1061         assert(ofnode_valid(node));
1062
1063         if (value)
1064                 return ofnode_write_string(node, "status", "okay");
1065         else
1066                 return ofnode_write_string(node, "status", "disabled");
1067 }