boot/image-fdt.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 2013, Google Inc.
   4  *
   5  * (C) Copyright 2008 Semihalf
   6  *
   7  * (C) Copyright 2000-2006
   8  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   9  */
  10
  11 #include <common.h>
  12 #include <fdt_support.h>
  13 #include <fdtdec.h>
  14 #include <env.h>
  15 #include <errno.h>
  16 #include <image.h>
  17 #include <lmb.h>
  18 #include <log.h>
  19 #include <malloc.h>
  20 #include <asm/global_data.h>
  21 #include <linux/libfdt.h>
  22 #include <mapmem.h>
  23 #include <asm/io.h>
  24 #include <tee/optee.h>
  25
  26 #ifndef CONFIG_SYS_FDT_PAD
  27 #define CONFIG_SYS_FDT_PAD 0x3000
  28 #endif
  29
  30 /* adding a ramdisk needs 0x44 bytes in version 2008.10 */
  31 #define FDT_RAMDISK_OVERHEAD    0x80
  32
  33 DECLARE_GLOBAL_DATA_PTR;
  34
  35 static void fdt_error(const char *msg)
  36 {
  37         puts("ERROR: ");
  38         puts(msg);
  39         puts(" - must RESET the board to recover.\n");
  40 }
  41
  42 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
  43 static const image_header_t *image_get_fdt(ulong fdt_addr)
  44 {
  45         const image_header_t *fdt_hdr = map_sysmem(fdt_addr, 0);
  46
  47         image_print_contents(fdt_hdr);
  48
  49         puts("   Verifying Checksum ... ");
  50         if (!image_check_hcrc(fdt_hdr)) {
  51                 fdt_error("fdt header checksum invalid");
  52                 return NULL;
  53         }
  54
  55         if (!image_check_dcrc(fdt_hdr)) {
  56                 fdt_error("fdt checksum invalid");
  57                 return NULL;
  58         }
  59         puts("OK\n");
  60
  61         if (!image_check_type(fdt_hdr, IH_TYPE_FLATDT)) {
  62                 fdt_error("uImage is not a fdt");
  63                 return NULL;
  64         }
  65         if (image_get_comp(fdt_hdr) != IH_COMP_NONE) {
  66                 fdt_error("uImage is compressed");
  67                 return NULL;
  68         }
  69         if (fdt_check_header((void *)image_get_data(fdt_hdr)) != 0) {
  70                 fdt_error("uImage data is not a fdt");
  71                 return NULL;
  72         }
  73         return fdt_hdr;
  74 }
  75 #endif
  76
  77 static void boot_fdt_reserve_region(struct lmb *lmb, uint64_t addr,
  78                                     uint64_t size, enum lmb_flags flags)
  79 {
  80         long ret;
  81
  82         ret = lmb_reserve_flags(lmb, addr, size, flags);
  83         if (ret >= 0) {
  84                 debug("   reserving fdt memory region: addr=%llx size=%llx flags=%x\n",
  85                       (unsigned long long)addr,
  86                       (unsigned long long)size, flags);
  87         } else {
  88                 puts("ERROR: reserving fdt memory region failed ");
  89                 printf("(addr=%llx size=%llx flags=%x)\n",
  90                        (unsigned long long)addr,
  91                        (unsigned long long)size, flags);
  92         }
  93 }
  94
  95 /**
  96  * boot_fdt_add_mem_rsv_regions - Mark the memreserve and reserved-memory
  97  * sections as unusable
  98  * @lmb: pointer to lmb handle, will be used for memory mgmt
  99  * @fdt_blob: pointer to fdt blob base address
 100  *
 101  * Adds the and reserved-memorymemreserve regions in the dtb to the lmb block.
 102  * Adding the memreserve regions prevents u-boot from using them to store the
 103  * initrd or the fdt blob.
 104  */
 105 void boot_fdt_add_mem_rsv_regions(struct lmb *lmb, void *fdt_blob)
 106 {
 107         uint64_t addr, size;
 108         int i, total, ret;
 109         int nodeoffset, subnode;
 110         struct fdt_resource res;
 111         enum lmb_flags flags;
 112
 113         if (fdt_check_header(fdt_blob) != 0)
 114                 return;
 115
 116         /* process memreserve sections */
 117         total = fdt_num_mem_rsv(fdt_blob);
 118         for (i = 0; i < total; i++) {
 119                 if (fdt_get_mem_rsv(fdt_blob, i, &addr, &size) != 0)
 120                         continue;
 121                 boot_fdt_reserve_region(lmb, addr, size, LMB_NONE);
 122         }
 123
 124         /* process reserved-memory */
 125         nodeoffset = fdt_subnode_offset(fdt_blob, 0, "reserved-memory");
 126         if (nodeoffset >= 0) {
 127                 subnode = fdt_first_subnode(fdt_blob, nodeoffset);
 128                 while (subnode >= 0) {
 129                         /* check if this subnode has a reg property */
 130                         ret = fdt_get_resource(fdt_blob, subnode, "reg", 0,
 131                                                &res);
 132                         if (!ret && fdtdec_get_is_enabled(fdt_blob, subnode)) {
 133                                 flags = LMB_NONE;
 134                                 if (fdtdec_get_bool(fdt_blob, subnode,
 135                                                     "no-map"))
 136                                         flags = LMB_NOMAP;
 137                                 addr = res.start;
 138                                 size = res.end - res.start + 1;
 139                                 boot_fdt_reserve_region(lmb, addr, size, flags);
 140                         }
 141
 142                         subnode = fdt_next_subnode(fdt_blob, subnode);
 143                 }
 144         }
 145 }
 146
 147 /**
 148  * boot_relocate_fdt - relocate flat device tree
 149  * @lmb: pointer to lmb handle, will be used for memory mgmt
 150  * @of_flat_tree: pointer to a char* variable, will hold fdt start address
 151  * @of_size: pointer to a ulong variable, will hold fdt length
 152  *
 153  * boot_relocate_fdt() allocates a region of memory within the bootmap and
 154  * relocates the of_flat_tree into that region, even if the fdt is already in
 155  * the bootmap.  It also expands the size of the fdt by CONFIG_SYS_FDT_PAD
 156  * bytes.
 157  *
 158  * of_flat_tree and of_size are set to final (after relocation) values
 159  *
 160  * returns:
 161  *      0 - success
 162  *      1 - failure
 163  */
 164 int boot_relocate_fdt(struct lmb *lmb, char **of_flat_tree, ulong *of_size)
 165 {
 166         void    *fdt_blob = *of_flat_tree;
 167         void    *of_start = NULL;
 168         u64     start, size, usable;
 169         char    *fdt_high;
 170         ulong   mapsize, low;
 171         ulong   of_len = 0;
 172         int     bank;
 173         int     err;
 174         int     disable_relocation = 0;
 175
 176         /* nothing to do */
 177         if (*of_size == 0)
 178                 return 0;
 179
 180         if (fdt_check_header(fdt_blob) != 0) {
 181                 fdt_error("image is not a fdt");
 182                 goto error;
 183         }
 184
 185         /* position on a 4K boundary before the alloc_current */
 186         /* Pad the FDT by a specified amount */
 187         of_len = *of_size + CONFIG_SYS_FDT_PAD;
 188
 189         /* If fdt_high is set use it to select the relocation address */
 190         fdt_high = env_get("fdt_high");
 191         if (fdt_high) {
 192                 void *desired_addr = (void *)hextoul(fdt_high, NULL);
 193
 194                 if (((ulong) desired_addr) == ~0UL) {
 195                         /* All ones means use fdt in place */
 196                         of_start = fdt_blob;
 197                         lmb_reserve(lmb, (ulong)of_start, of_len);
 198                         disable_relocation = 1;
 199                 } else if (desired_addr) {
 200                         of_start =
 201                             (void *)(ulong) lmb_alloc_base(lmb, of_len, 0x1000,
 202                                                            (ulong)desired_addr);
 203                         if (of_start == NULL) {
 204                                 puts("Failed using fdt_high value for Device Tree");
 205                                 goto error;
 206                         }
 207                 } else {
 208                         of_start =
 209                             (void *)(ulong) lmb_alloc(lmb, of_len, 0x1000);
 210                 }
 211         } else {
 212                 mapsize = env_get_bootm_mapsize();
 213                 low = env_get_bootm_low();
 214                 of_start = NULL;
 215
 216                 for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
 217                         start = gd->bd->bi_dram[bank].start;
 218                         size = gd->bd->bi_dram[bank].size;
 219
 220                         /* DRAM bank addresses are too low, skip it. */
 221                         if (start + size < low)
 222                                 continue;
 223
 224                         usable = min(size, (u64)mapsize);
 225
 226                         /*
 227                          * At least part of this DRAM bank is usable, try
 228                          * using it for LMB allocation.
 229                          */
 230                         of_start =
 231                             (void *)(ulong) lmb_alloc_base(lmb, of_len, 0x1000,
 232                                                            start + usable);
 233                         /* Allocation succeeded, use this block. */
 234                         if (of_start != NULL)
 235                                 break;
 236
 237                         /*
 238                          * Reduce the mapping size in the next bank
 239                          * by the size of attempt in current bank.
 240                          */
 241                         mapsize -= usable - max(start, (u64)low);
 242                         if (!mapsize)
 243                                 break;
 244                 }
 245         }
 246
 247         if (of_start == NULL) {
 248                 puts("device tree - allocation error\n");
 249                 goto error;
 250         }
 251
 252         if (disable_relocation) {
 253                 /*
 254                  * We assume there is space after the existing fdt to use
 255                  * for padding
 256                  */
 257                 fdt_set_totalsize(of_start, of_len);
 258                 printf("   Using Device Tree in place at %p, end %p\n",
 259                        of_start, of_start + of_len - 1);
 260         } else {
 261                 debug("## device tree at %p ... %p (len=%ld [0x%lX])\n",
 262                       fdt_blob, fdt_blob + *of_size - 1, of_len, of_len);
 263
 264                 printf("   Loading Device Tree to %p, end %p ... ",
 265                        of_start, of_start + of_len - 1);
 266
 267                 err = fdt_open_into(fdt_blob, of_start, of_len);
 268                 if (err != 0) {
 269                         fdt_error("fdt move failed");
 270                         goto error;
 271                 }
 272                 puts("OK\n");
 273         }
 274
 275         *of_flat_tree = of_start;
 276         *of_size = of_len;
 277
 278         if (CONFIG_IS_ENABLED(CMD_FDT))
 279                 set_working_fdt_addr(map_to_sysmem(*of_flat_tree));
 280         return 0;
 281
 282 error:
 283         return 1;
 284 }
 285
 286 /**
 287  * select_fdt() - Select and locate the FDT to use
 288  *
 289  * @images: pointer to the bootm images structure
 290  * @select: name of FDT to select, or NULL for any
 291  * @arch: expected FDT architecture
 292  * @fdt_addrp: pointer to a ulong variable, will hold FDT pointer
 293  * Return: 0 if OK, -ENOPKG if no FDT (but an error should not be reported),
 294  *      other -ve value on other error
 295  */
 296
 297 static int select_fdt(bootm_headers_t *images, const char *select, u8 arch,
 298                       ulong *fdt_addrp)
 299 {
 300         const char *buf;
 301         ulong fdt_addr;
 302
 303 #if CONFIG_IS_ENABLED(FIT)
 304         const char *fit_uname_config = images->fit_uname_cfg;
 305         const char *fit_uname_fdt = NULL;
 306         ulong default_addr;
 307         int fdt_noffset;
 308
 309         if (select) {
 310                         /*
 311                          * If the FDT blob comes from the FIT image and the
 312                          * FIT image address is omitted in the command line
 313                          * argument, try to use ramdisk or os FIT image
 314                          * address or default load address.
 315                          */
 316                         if (images->fit_uname_rd)
 317                                 default_addr = (ulong)images->fit_hdr_rd;
 318                         else if (images->fit_uname_os)
 319                                 default_addr = (ulong)images->fit_hdr_os;
 320                         else
 321                                 default_addr = image_load_addr;
 322
 323                         if (fit_parse_conf(select, default_addr, &fdt_addr,
 324                                            &fit_uname_config)) {
 325                                 debug("*  fdt: config '%s' from image at 0x%08lx\n",
 326                                       fit_uname_config, fdt_addr);
 327                         } else if (fit_parse_subimage(select, default_addr, &fdt_addr,
 328                                    &fit_uname_fdt)) {
 329                                 debug("*  fdt: subimage '%s' from image at 0x%08lx\n",
 330                                       fit_uname_fdt, fdt_addr);
 331                         } else
 332 #endif
 333                 {
 334                         fdt_addr = hextoul(select, NULL);
 335                         debug("*  fdt: cmdline image address = 0x%08lx\n",
 336                               fdt_addr);
 337                 }
 338 #if CONFIG_IS_ENABLED(FIT)
 339         } else {
 340                 /* use FIT configuration provided in first bootm
 341                  * command argument
 342                  */
 343                 fdt_addr = map_to_sysmem(images->fit_hdr_os);
 344                 fdt_noffset = fit_get_node_from_config(images, FIT_FDT_PROP,
 345                                                        fdt_addr);
 346                 if (fdt_noffset == -ENOENT)
 347                         return -ENOPKG;
 348                 else if (fdt_noffset < 0)
 349                         return fdt_noffset;
 350         }
 351 #endif
 352         debug("## Checking for 'FDT'/'FDT Image' at %08lx\n",
 353               fdt_addr);
 354
 355         /*
 356          * Check if there is an FDT image at the
 357          * address provided in the second bootm argument
 358          * check image type, for FIT images get a FIT node.
 359          */
 360         buf = map_sysmem(fdt_addr, 0);
 361         switch (genimg_get_format(buf)) {
 362 #if CONFIG_IS_ENABLED(LEGACY_IMAGE_FORMAT)
 363         case IMAGE_FORMAT_LEGACY: {
 364                         const image_header_t *fdt_hdr;
 365                         ulong load, load_end;
 366                         ulong image_start, image_data, image_end;
 367
 368                         /* verify fdt_addr points to a valid image header */
 369                         printf("## Flattened Device Tree from Legacy Image at %08lx\n",
 370                                fdt_addr);
 371                         fdt_hdr = image_get_fdt(fdt_addr);
 372                         if (!fdt_hdr)
 373                                 return -ENOPKG;
 374
 375                         /*
 376                          * move image data to the load address,
 377                          * make sure we don't overwrite initial image
 378                          */
 379                         image_start = (ulong)fdt_hdr;
 380                         image_data = (ulong)image_get_data(fdt_hdr);
 381                         image_end = image_get_image_end(fdt_hdr);
 382
 383                         load = image_get_load(fdt_hdr);
 384                         load_end = load + image_get_data_size(fdt_hdr);
 385
 386                         if (load == image_start ||
 387                             load == image_data) {
 388                                 fdt_addr = load;
 389                                 break;
 390                         }
 391
 392                         if ((load < image_end) && (load_end > image_start)) {
 393                                 fdt_error("fdt overwritten");
 394                                 return -EFAULT;
 395                         }
 396
 397                         debug("   Loading FDT from 0x%08lx to 0x%08lx\n",
 398                               image_data, load);
 399
 400                         memmove((void *)load,
 401                                 (void *)image_data,
 402                                 image_get_data_size(fdt_hdr));
 403
 404                         fdt_addr = load;
 405                         break;
 406                 }
 407 #endif
 408         case IMAGE_FORMAT_FIT:
 409                 /*
 410                  * This case will catch both: new uImage format
 411                  * (libfdt based) and raw FDT blob (also libfdt
 412                  * based).
 413                  */
 414 #if CONFIG_IS_ENABLED(FIT)
 415                         /* check FDT blob vs FIT blob */
 416                         if (!fit_check_format(buf, IMAGE_SIZE_INVAL)) {
 417                                 ulong load, len;
 418
 419                                 fdt_noffset = boot_get_fdt_fit(images, fdt_addr,
 420                                                                &fit_uname_fdt,
 421                                                                &fit_uname_config,
 422                                                                arch, &load, &len);
 423
 424                                 if (fdt_noffset < 0)
 425                                         return -ENOENT;
 426
 427                                 images->fit_hdr_fdt = map_sysmem(fdt_addr, 0);
 428                                 images->fit_uname_fdt = fit_uname_fdt;
 429                                 images->fit_noffset_fdt = fdt_noffset;
 430                                 fdt_addr = load;
 431
 432                                 break;
 433                 } else
 434 #endif
 435                 {
 436                         /*
 437                          * FDT blob
 438                          */
 439                         debug("*  fdt: raw FDT blob\n");
 440                         printf("## Flattened Device Tree blob at %08lx\n",
 441                                (long)fdt_addr);
 442                 }
 443                 break;
 444         default:
 445                 puts("ERROR: Did not find a cmdline Flattened Device Tree\n");
 446                 return -ENOENT;
 447         }
 448         *fdt_addrp = fdt_addr;
 449
 450         return 0;
 451 }
 452
 453 /**
 454  * boot_get_fdt - main fdt handling routine
 455  * @argc: command argument count
 456  * @argv: command argument list
 457  * @arch: architecture (IH_ARCH_...)
 458  * @images: pointer to the bootm images structure
 459  * @of_flat_tree: pointer to a char* variable, will hold fdt start address
 460  * @of_size: pointer to a ulong variable, will hold fdt length
 461  *
 462  * boot_get_fdt() is responsible for finding a valid flat device tree image.
 463  * Currently supported are the following ramdisk sources:
 464  *      - multicomponent kernel/ramdisk image,
 465  *      - commandline provided address of decicated ramdisk image.
 466  *
 467  * returns:
 468  *     0, if fdt image was found and valid, or skipped
 469  *     of_flat_tree and of_size are set to fdt start address and length if
 470  *     fdt image is found and valid
 471  *
 472  *     1, if fdt image is found but corrupted
 473  *     of_flat_tree and of_size are set to 0 if no fdt exists
 474  */
 475 int boot_get_fdt(int flag, int argc, char *const argv[], uint8_t arch,
 476                  bootm_headers_t *images, char **of_flat_tree, ulong *of_size)
 477 {
 478         ulong           img_addr;
 479         ulong           fdt_addr;
 480         char            *fdt_blob = NULL;
 481         void            *buf;
 482         const char *select = NULL;
 483
 484         *of_flat_tree = NULL;
 485         *of_size = 0;
 486
 487         img_addr = (argc == 0) ? image_load_addr : hextoul(argv[0], NULL);
 488         buf = map_sysmem(img_addr, 0);
 489
 490         if (argc > 2)
 491                 select = argv[2];
 492         if (select || genimg_has_config(images)) {
 493                 int ret;
 494
 495                 ret = select_fdt(images, select, arch, &fdt_addr);
 496                 if (ret == -ENOPKG)
 497                         goto no_fdt;
 498                 else if (ret)
 499                         return 1;
 500                 printf("   Booting using the fdt blob at %#08lx\n", fdt_addr);
 501                 fdt_blob = map_sysmem(fdt_addr, 0);
 502         } else if (images->legacy_hdr_valid &&
 503                         image_check_type(&images->legacy_hdr_os_copy,
 504                                          IH_TYPE_MULTI)) {
 505                 ulong fdt_data, fdt_len;
 506
 507                 /*
 508                  * Now check if we have a legacy multi-component image,
 509                  * get second entry data start address and len.
 510                  */
 511                 printf("## Flattened Device Tree from multi component Image at %08lX\n",
 512                        (ulong)images->legacy_hdr_os);
 513
 514                 image_multi_getimg(images->legacy_hdr_os, 2, &fdt_data,
 515                                    &fdt_len);
 516                 if (fdt_len) {
 517                         fdt_blob = (char *)fdt_data;
 518                         printf("   Booting using the fdt at 0x%p\n", fdt_blob);
 519
 520                         if (fdt_check_header(fdt_blob) != 0) {
 521                                 fdt_error("image is not a fdt");
 522                                 goto error;
 523                         }
 524
 525                         if (fdt_totalsize(fdt_blob) != fdt_len) {
 526                                 fdt_error("fdt size != image size");
 527                                 goto error;
 528                         }
 529                 } else {
 530                         debug("## No Flattened Device Tree\n");
 531                         goto no_fdt;
 532                 }
 533 #ifdef CONFIG_ANDROID_BOOT_IMAGE
 534         } else if (genimg_get_format(buf) == IMAGE_FORMAT_ANDROID) {
 535                 struct andr_img_hdr *hdr = buf;
 536                 ulong           fdt_data, fdt_len;
 537                 u32                     fdt_size, dtb_idx;
 538                 /*
 539                  * Firstly check if this android boot image has dtb field.
 540                  */
 541                 dtb_idx = (u32)env_get_ulong("adtb_idx", 10, 0);
 542                 if (android_image_get_dtb_by_index((ulong)hdr, dtb_idx, &fdt_addr, &fdt_size)) {
 543                         fdt_blob = (char *)map_sysmem(fdt_addr, 0);
 544                         if (fdt_check_header(fdt_blob))
 545                                 goto no_fdt;
 546
 547                         debug("## Using FDT in Android image dtb area with idx %u\n", dtb_idx);
 548                 } else if (!android_image_get_second(hdr, &fdt_data, &fdt_len) &&
 549                         !fdt_check_header((char *)fdt_data)) {
 550                         fdt_blob = (char *)fdt_data;
 551                         if (fdt_totalsize(fdt_blob) != fdt_len)
 552                                 goto error;
 553
 554                         debug("## Using FDT in Android image second area\n");
 555                 } else {
 556                         fdt_addr = env_get_hex("fdtaddr", 0);
 557                         if (!fdt_addr)
 558                                 goto no_fdt;
 559
 560                         fdt_blob = map_sysmem(fdt_addr, 0);
 561                         if (fdt_check_header(fdt_blob))
 562                                 goto no_fdt;
 563
 564                         debug("## Using FDT at ${fdtaddr}=Ox%lx\n", fdt_addr);
 565                 }
 566 #endif
 567         } else {
 568                 debug("## No Flattened Device Tree\n");
 569                 goto no_fdt;
 570         }
 571
 572         *of_flat_tree = fdt_blob;
 573         *of_size = fdt_totalsize(fdt_blob);
 574         debug("   of_flat_tree at 0x%08lx size 0x%08lx\n",
 575               (ulong)*of_flat_tree, *of_size);
 576
 577         return 0;
 578
 579 no_fdt:
 580         debug("Continuing to boot without FDT\n");
 581         return 0;
 582 error:
 583         return 1;
 584 }
 585
 586 /*
 587  * Verify the device tree.
 588  *
 589  * This function is called after all device tree fix-ups have been enacted,
 590  * so that the final device tree can be verified.  The definition of "verified"
 591  * is up to the specific implementation.  However, it generally means that the
 592  * addresses of some of the devices in the device tree are compared with the
 593  * actual addresses at which U-Boot has placed them.
 594  *
 595  * Returns 1 on success, 0 on failure.  If 0 is returned, U-Boot will halt the
 596  * boot process.
 597  */
 598 __weak int ft_verify_fdt(void *fdt)
 599 {
 600         return 1;
 601 }
 602
 603 __weak int arch_fixup_fdt(void *blob)
 604 {
 605         return 0;
 606 }
 607
 608 int image_setup_libfdt(bootm_headers_t *images, void *blob,
 609                        int of_size, struct lmb *lmb)
 610 {
 611         ulong *initrd_start = &images->initrd_start;
 612         ulong *initrd_end = &images->initrd_end;
 613         int ret = -EPERM;
 614         int fdt_ret;
 615
 616         if (fdt_root(blob) < 0) {
 617                 printf("ERROR: root node setup failed\n");
 618                 goto err;
 619         }
 620         if (fdt_chosen(blob) < 0) {
 621                 printf("ERROR: /chosen node create failed\n");
 622                 goto err;
 623         }
 624         if (arch_fixup_fdt(blob) < 0) {
 625                 printf("ERROR: arch-specific fdt fixup failed\n");
 626                 goto err;
 627         }
 628
 629         fdt_ret = optee_copy_fdt_nodes(blob);
 630         if (fdt_ret) {
 631                 printf("ERROR: transfer of optee nodes to new fdt failed: %s\n",
 632                        fdt_strerror(fdt_ret));
 633                 goto err;
 634         }
 635
 636         /* Store name of configuration node as u-boot,bootconf in /chosen node */
 637         if (images->fit_uname_cfg)
 638                 fdt_find_and_setprop(blob, "/chosen", "u-boot,bootconf",
 639                                         images->fit_uname_cfg,
 640                                         strlen(images->fit_uname_cfg) + 1, 1);
 641
 642         /* Update ethernet nodes */
 643         fdt_fixup_ethernet(blob);
 644 #if CONFIG_IS_ENABLED(CMD_PSTORE)
 645         /* Append PStore configuration */
 646         fdt_fixup_pstore(blob);
 647 #endif
 648         if (IS_ENABLED(CONFIG_OF_BOARD_SETUP)) {
 649                 const char *skip_board_fixup;
 650
 651                 skip_board_fixup = env_get("skip_board_fixup");
 652                 if (skip_board_fixup && ((int)simple_strtol(skip_board_fixup, NULL, 10) == 1)) {
 653                         printf("skip board fdt fixup\n");
 654                 } else {
 655                         fdt_ret = ft_board_setup(blob, gd->bd);
 656                         if (fdt_ret) {
 657                                 printf("ERROR: board-specific fdt fixup failed: %s\n",
 658                                        fdt_strerror(fdt_ret));
 659                                 goto err;
 660                         }
 661                 }
 662         }
 663         if (IS_ENABLED(CONFIG_OF_SYSTEM_SETUP)) {
 664                 fdt_ret = ft_system_setup(blob, gd->bd);
 665                 if (fdt_ret) {
 666                         printf("ERROR: system-specific fdt fixup failed: %s\n",
 667                                fdt_strerror(fdt_ret));
 668                         goto err;
 669                 }
 670         }
 671
 672         /* Delete the old LMB reservation */
 673         if (lmb)
 674                 lmb_free(lmb, (phys_addr_t)(u32)(uintptr_t)blob,
 675                          (phys_size_t)fdt_totalsize(blob));
 676
 677         ret = fdt_shrink_to_minimum(blob, 0);
 678         if (ret < 0)
 679                 goto err;
 680         of_size = ret;
 681
 682         if (*initrd_start && *initrd_end) {
 683                 of_size += FDT_RAMDISK_OVERHEAD;
 684                 fdt_set_totalsize(blob, of_size);
 685         }
 686         /* Create a new LMB reservation */
 687         if (lmb)
 688                 lmb_reserve(lmb, (ulong)blob, of_size);
 689
 690         fdt_initrd(blob, *initrd_start, *initrd_end);
 691         if (!ft_verify_fdt(blob))
 692                 goto err;
 693
 694 #if defined(CONFIG_ARCH_KEYSTONE)
 695         if (IS_ENABLED(CONFIG_OF_BOARD_SETUP))
 696                 ft_board_setup_ex(blob, gd->bd);
 697 #endif
 698
 699         return 0;
 700 err:
 701         printf(" - must RESET the board to recover.\n\n");
 702
 703         return ret;
 704 }