common/spl/spl.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2010
   4  * Texas Instruments, <www.ti.com>
   5  *
   6  * Aneesh V <aneesh@ti.com>
   7  */
   8
   9 #include <common.h>
  10 #include <bloblist.h>
  11 #include <binman_sym.h>
  12 #include <dm.h>
  13 #include <handoff.h>
  14 #include <spl.h>
  15 #include <asm/u-boot.h>
  16 #include <nand.h>
  17 #include <fat.h>
  18 #include <version.h>
  19 #include <image.h>
  20 #include <malloc.h>
  21 #include <dm/root.h>
  22 #include <linux/compiler.h>
  23 #include <fdt_support.h>
  24 #include <bootcount.h>
  25
  26 DECLARE_GLOBAL_DATA_PTR;
  27
  28 #ifndef CONFIG_SYS_UBOOT_START
  29 #define CONFIG_SYS_UBOOT_START  CONFIG_SYS_TEXT_BASE
  30 #endif
  31 #ifndef CONFIG_SYS_MONITOR_LEN
  32 /* Unknown U-Boot size, let's assume it will not be more than 200 KB */
  33 #define CONFIG_SYS_MONITOR_LEN  (200 * 1024)
  34 #endif
  35
  36 u32 *boot_params_ptr = NULL;
  37
  38 /* See spl.h for information about this */
  39 binman_sym_declare(ulong, u_boot_any, image_pos);
  40
  41 /* Define board data structure */
  42 static bd_t bdata __attribute__ ((section(".data")));
  43
  44 /*
  45  * Board-specific Platform code can reimplement show_boot_progress () if needed
  46  */
  47 __weak void show_boot_progress(int val) {}
  48
  49 #if defined(CONFIG_SPL_OS_BOOT) || CONFIG_IS_ENABLED(HANDOFF)
  50 /* weak, default platform-specific function to initialize dram banks */
  51 __weak int dram_init_banksize(void)
  52 {
  53         return 0;
  54 }
  55 #endif
  56
  57 /*
  58  * Default function to determine if u-boot or the OS should
  59  * be started. This implementation always returns 1.
  60  *
  61  * Please implement your own board specific funcion to do this.
  62  *
  63  * RETURN
  64  * 0 to not start u-boot
  65  * positive if u-boot should start
  66  */
  67 #ifdef CONFIG_SPL_OS_BOOT
  68 __weak int spl_start_uboot(void)
  69 {
  70         puts(SPL_TPL_PROMPT
  71              "Please implement spl_start_uboot() for your board\n");
  72         puts(SPL_TPL_PROMPT "Direct Linux boot not active!\n");
  73         return 1;
  74 }
  75
  76 /*
  77  * Weak default function for arch specific zImage check. Return zero
  78  * and fill start and end address if image is recognized.
  79  */
  80 int __weak bootz_setup(ulong image, ulong *start, ulong *end)
  81 {
  82          return 1;
  83 }
  84 #endif
  85
  86 /* Weak default function for arch/board-specific fixups to the spl_image_info */
  87 void __weak spl_perform_fixups(struct spl_image_info *spl_image)
  88 {
  89 }
  90
  91 void spl_fixup_fdt(void)
  92 {
  93 #if defined(CONFIG_SPL_OF_LIBFDT) && defined(CONFIG_SYS_SPL_ARGS_ADDR)
  94         void *fdt_blob = (void *)CONFIG_SYS_SPL_ARGS_ADDR;
  95         int err;
  96
  97         err = fdt_check_header(fdt_blob);
  98         if (err < 0) {
  99                 printf("fdt_root: %s\n", fdt_strerror(err));
 100                 return;
 101         }
 102
 103         /* fixup the memory dt node */
 104         err = fdt_shrink_to_minimum(fdt_blob, 0);
 105         if (err == 0) {
 106                 printf(SPL_TPL_PROMPT "fdt_shrink_to_minimum err - %d\n", err);
 107                 return;
 108         }
 109
 110         err = arch_fixup_fdt(fdt_blob);
 111         if (err) {
 112                 printf(SPL_TPL_PROMPT "arch_fixup_fdt err - %d\n", err);
 113                 return;
 114         }
 115 #endif
 116 }
 117
 118 /*
 119  * Weak default function for board specific cleanup/preparation before
 120  * Linux boot. Some boards/platforms might not need it, so just provide
 121  * an empty stub here.
 122  */
 123 __weak void spl_board_prepare_for_linux(void)
 124 {
 125         /* Nothing to do! */
 126 }
 127
 128 __weak void spl_board_prepare_for_boot(void)
 129 {
 130         /* Nothing to do! */
 131 }
 132
 133 __weak struct image_header *spl_get_load_buffer(ssize_t offset, size_t size)
 134 {
 135         return (struct image_header *)(CONFIG_SYS_TEXT_BASE + offset);
 136 }
 137
 138 void spl_set_header_raw_uboot(struct spl_image_info *spl_image)
 139 {
 140         ulong u_boot_pos = binman_sym(ulong, u_boot_any, image_pos);
 141
 142         spl_image->size = CONFIG_SYS_MONITOR_LEN;
 143
 144         /*
 145          * Binman error cases: address of the end of the previous region or the
 146          * start of the image's entry area (usually 0) if there is no previous
 147          * region.
 148          */
 149         if (u_boot_pos && u_boot_pos != BINMAN_SYM_MISSING) {
 150                 /* Binman does not support separated entry addresses */
 151                 spl_image->entry_point = u_boot_pos;
 152                 spl_image->load_addr = u_boot_pos;
 153         } else {
 154                 spl_image->entry_point = CONFIG_SYS_UBOOT_START;
 155                 spl_image->load_addr = CONFIG_SYS_TEXT_BASE;
 156         }
 157         spl_image->os = IH_OS_U_BOOT;
 158         spl_image->name = "U-Boot";
 159 }
 160
 161 #ifdef CONFIG_SPL_LOAD_FIT_FULL
 162 /* Parse and load full fitImage in SPL */
 163 static int spl_load_fit_image(struct spl_image_info *spl_image,
 164                               const struct image_header *header)
 165 {
 166         bootm_headers_t images;
 167         const char *fit_uname_config = NULL;
 168         const char *fit_uname_fdt = FIT_FDT_PROP;
 169         const char *uname;
 170         ulong fw_data = 0, dt_data = 0, img_data = 0;
 171         ulong fw_len = 0, dt_len = 0, img_len = 0;
 172         int idx, conf_noffset;
 173         int ret;
 174
 175 #ifdef CONFIG_SPL_FIT_SIGNATURE
 176         images.verify = 1;
 177 #endif
 178         ret = fit_image_load(&images, (ulong)header,
 179                              NULL, &fit_uname_config,
 180                              IH_ARCH_DEFAULT, IH_TYPE_STANDALONE, -1,
 181                              FIT_LOAD_REQUIRED, &fw_data, &fw_len);
 182         if (ret < 0)
 183                 return ret;
 184
 185         spl_image->size = fw_len;
 186         spl_image->entry_point = fw_data;
 187         spl_image->load_addr = fw_data;
 188         spl_image->os = IH_OS_U_BOOT;
 189         spl_image->name = "U-Boot";
 190
 191         debug(SPL_TPL_PROMPT "payload image: %32s load addr: 0x%lx size: %d\n",
 192               spl_image->name, spl_image->load_addr, spl_image->size);
 193
 194 #ifdef CONFIG_SPL_FIT_SIGNATURE
 195         images.verify = 1;
 196 #endif
 197         fit_image_load(&images, (ulong)header,
 198                        &fit_uname_fdt, &fit_uname_config,
 199                        IH_ARCH_DEFAULT, IH_TYPE_FLATDT, -1,
 200                        FIT_LOAD_OPTIONAL, &dt_data, &dt_len);
 201
 202         conf_noffset = fit_conf_get_node((const void *)header,
 203                                          fit_uname_config);
 204         if (conf_noffset <= 0)
 205                 return 0;
 206
 207         for (idx = 0;
 208              uname = fdt_stringlist_get((const void *)header, conf_noffset,
 209                                         FIT_LOADABLE_PROP, idx,
 210                                 NULL), uname;
 211              idx++)
 212         {
 213 #ifdef CONFIG_SPL_FIT_SIGNATURE
 214                 images.verify = 1;
 215 #endif
 216                 ret = fit_image_load(&images, (ulong)header,
 217                                      &uname, &fit_uname_config,
 218                                      IH_ARCH_DEFAULT, IH_TYPE_LOADABLE, -1,
 219                                      FIT_LOAD_OPTIONAL_NON_ZERO,
 220                                      &img_data, &img_len);
 221                 if (ret < 0)
 222                         return ret;
 223         }
 224
 225         return 0;
 226 }
 227 #endif
 228
 229 int spl_parse_image_header(struct spl_image_info *spl_image,
 230                            const struct image_header *header)
 231 {
 232 #ifdef CONFIG_SPL_LOAD_FIT_FULL
 233         int ret = spl_load_fit_image(spl_image, header);
 234
 235         if (!ret)
 236                 return ret;
 237 #endif
 238         if (image_get_magic(header) == IH_MAGIC) {
 239 #ifdef CONFIG_SPL_LEGACY_IMAGE_SUPPORT
 240                 u32 header_size = sizeof(struct image_header);
 241
 242 #ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK
 243                 /* check uImage header CRC */
 244                 if (!image_check_hcrc(header)) {
 245                         puts("SPL: Image header CRC check failed!\n");
 246                         return -EINVAL;
 247                 }
 248 #endif
 249
 250                 if (spl_image->flags & SPL_COPY_PAYLOAD_ONLY) {
 251                         /*
 252                          * On some system (e.g. powerpc), the load-address and
 253                          * entry-point is located at address 0. We can't load
 254                          * to 0-0x40. So skip header in this case.
 255                          */
 256                         spl_image->load_addr = image_get_load(header);
 257                         spl_image->entry_point = image_get_ep(header);
 258                         spl_image->size = image_get_data_size(header);
 259                 } else {
 260                         spl_image->entry_point = image_get_load(header);
 261                         /* Load including the header */
 262                         spl_image->load_addr = spl_image->entry_point -
 263                                 header_size;
 264                         spl_image->size = image_get_data_size(header) +
 265                                 header_size;
 266                 }
 267 #ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK
 268                 /* store uImage data length and CRC to check later */
 269                 spl_image->dcrc_data = image_get_load(header);
 270                 spl_image->dcrc_length = image_get_data_size(header);
 271                 spl_image->dcrc = image_get_dcrc(header);
 272 #endif
 273
 274                 spl_image->os = image_get_os(header);
 275                 spl_image->name = image_get_name(header);
 276                 debug(SPL_TPL_PROMPT
 277                       "payload image: %32s load addr: 0x%lx size: %d\n",
 278                       spl_image->name, spl_image->load_addr, spl_image->size);
 279 #else
 280                 /* LEGACY image not supported */
 281                 debug("Legacy boot image support not enabled, proceeding to other boot methods\n");
 282                 return -EINVAL;
 283 #endif
 284         } else {
 285 #ifdef CONFIG_SPL_PANIC_ON_RAW_IMAGE
 286                 /*
 287                  * CONFIG_SPL_PANIC_ON_RAW_IMAGE is defined when the
 288                  * code which loads images in SPL cannot guarantee that
 289                  * absolutely all read errors will be reported.
 290                  * An example is the LPC32XX MLC NAND driver, which
 291                  * will consider that a completely unreadable NAND block
 292                  * is bad, and thus should be skipped silently.
 293                  */
 294                 panic("** no mkimage signature but raw image not supported");
 295 #endif
 296
 297 #ifdef CONFIG_SPL_OS_BOOT
 298                 ulong start, end;
 299
 300                 if (!bootz_setup((ulong)header, &start, &end)) {
 301                         spl_image->name = "Linux";
 302                         spl_image->os = IH_OS_LINUX;
 303                         spl_image->load_addr = CONFIG_SYS_LOAD_ADDR;
 304                         spl_image->entry_point = CONFIG_SYS_LOAD_ADDR;
 305                         spl_image->size = end - start;
 306                         debug(SPL_TPL_PROMPT
 307                               "payload zImage, load addr: 0x%lx size: %d\n",
 308                               spl_image->load_addr, spl_image->size);
 309                         return 0;
 310                 }
 311 #endif
 312
 313 #ifdef CONFIG_SPL_RAW_IMAGE_SUPPORT
 314                 /* Signature not found - assume u-boot.bin */
 315                 debug("mkimage signature not found - ih_magic = %x\n",
 316                         header->ih_magic);
 317                 spl_set_header_raw_uboot(spl_image);
 318 #else
 319                 /* RAW image not supported, proceed to other boot methods. */
 320                 debug("Raw boot image support not enabled, proceeding to other boot methods\n");
 321                 return -EINVAL;
 322 #endif
 323         }
 324
 325         return 0;
 326 }
 327
 328 __weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
 329 {
 330         typedef void __noreturn (*image_entry_noargs_t)(void);
 331
 332         image_entry_noargs_t image_entry =
 333                 (image_entry_noargs_t)spl_image->entry_point;
 334
 335         debug("image entry point: 0x%lx\n", spl_image->entry_point);
 336         image_entry();
 337 }
 338
 339 #if CONFIG_IS_ENABLED(HANDOFF)
 340 /**
 341  * Set up the SPL hand-off information
 342  *
 343  * This is initially empty (zero) but can be written by
 344  */
 345 static int setup_spl_handoff(void)
 346 {
 347         struct spl_handoff *ho;
 348
 349         ho = bloblist_ensure(BLOBLISTT_SPL_HANDOFF, sizeof(struct spl_handoff));
 350         if (!ho)
 351                 return -ENOENT;
 352
 353         return 0;
 354 }
 355
 356 static int write_spl_handoff(void)
 357 {
 358         struct spl_handoff *ho;
 359
 360         ho = bloblist_find(BLOBLISTT_SPL_HANDOFF, sizeof(struct spl_handoff));
 361         if (!ho)
 362                 return -ENOENT;
 363         handoff_save_dram(ho);
 364 #ifdef CONFIG_SANDBOX
 365         ho->arch.magic = TEST_HANDOFF_MAGIC;
 366 #endif
 367         debug(SPL_TPL_PROMPT "Wrote SPL handoff\n");
 368
 369         return 0;
 370 }
 371 #else
 372 static inline int setup_spl_handoff(void) { return 0; }
 373 static inline int write_spl_handoff(void) { return 0; }
 374
 375 #endif /* HANDOFF */
 376
 377 static int spl_common_init(bool setup_malloc)
 378 {
 379         int ret;
 380
 381 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
 382         if (setup_malloc) {
 383 #ifdef CONFIG_MALLOC_F_ADDR
 384                 gd->malloc_base = CONFIG_MALLOC_F_ADDR;
 385 #endif
 386                 gd->malloc_limit = CONFIG_VAL(SYS_MALLOC_F_LEN);
 387                 gd->malloc_ptr = 0;
 388         }
 389 #endif
 390         ret = bootstage_init(true);
 391         if (ret) {
 392                 debug("%s: Failed to set up bootstage: ret=%d\n", __func__,
 393                       ret);
 394                 return ret;
 395         }
 396         bootstage_mark_name(BOOTSTAGE_ID_START_SPL, "spl");
 397 #if CONFIG_IS_ENABLED(LOG)
 398         ret = log_init();
 399         if (ret) {
 400                 debug("%s: Failed to set up logging\n", __func__);
 401                 return ret;
 402         }
 403 #endif
 404         if (CONFIG_IS_ENABLED(BLOBLIST)) {
 405                 ret = bloblist_init();
 406                 if (ret) {
 407                         debug("%s: Failed to set up bloblist: ret=%d\n",
 408                               __func__, ret);
 409                         return ret;
 410                 }
 411         }
 412         if (CONFIG_IS_ENABLED(HANDOFF)) {
 413                 int ret;
 414
 415                 ret = setup_spl_handoff();
 416                 if (ret) {
 417                         puts(SPL_TPL_PROMPT "Cannot set up SPL handoff\n");
 418                         hang();
 419                 }
 420         }
 421         if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) {
 422                 ret = fdtdec_setup();
 423                 if (ret) {
 424                         debug("fdtdec_setup() returned error %d\n", ret);
 425                         return ret;
 426                 }
 427         }
 428         if (CONFIG_IS_ENABLED(DM)) {
 429                 bootstage_start(BOOTSTATE_ID_ACCUM_DM_SPL, "dm_spl");
 430                 /* With CONFIG_SPL_OF_PLATDATA, bring in all devices */
 431                 ret = dm_init_and_scan(!CONFIG_IS_ENABLED(OF_PLATDATA));
 432                 bootstage_accum(BOOTSTATE_ID_ACCUM_DM_SPL);
 433                 if (ret) {
 434                         debug("dm_init_and_scan() returned error %d\n", ret);
 435                         return ret;
 436                 }
 437         }
 438
 439         return 0;
 440 }
 441
 442 void spl_set_bd(void)
 443 {
 444         /*
 445          * NOTE: On some platforms (e.g. x86) bdata may be in flash and not
 446          * writeable.
 447          */
 448         if (!gd->bd)
 449                 gd->bd = &bdata;
 450 }
 451
 452 int spl_early_init(void)
 453 {
 454         int ret;
 455
 456         debug("%s\n", __func__);
 457
 458         ret = spl_common_init(true);
 459         if (ret)
 460                 return ret;
 461         gd->flags |= GD_FLG_SPL_EARLY_INIT;
 462
 463         return 0;
 464 }
 465
 466 int spl_init(void)
 467 {
 468         int ret;
 469         bool setup_malloc = !(IS_ENABLED(CONFIG_SPL_STACK_R) &&
 470                         IS_ENABLED(CONFIG_SPL_SYS_MALLOC_SIMPLE));
 471
 472         debug("%s\n", __func__);
 473
 474         if (!(gd->flags & GD_FLG_SPL_EARLY_INIT)) {
 475                 ret = spl_common_init(setup_malloc);
 476                 if (ret)
 477                         return ret;
 478         }
 479         gd->flags |= GD_FLG_SPL_INIT;
 480
 481         return 0;
 482 }
 483
 484 #ifndef BOOT_DEVICE_NONE
 485 #define BOOT_DEVICE_NONE 0xdeadbeef
 486 #endif
 487
 488 __weak void board_boot_order(u32 *spl_boot_list)
 489 {
 490         spl_boot_list[0] = spl_boot_device();
 491 }
 492
 493 static struct spl_image_loader *spl_ll_find_loader(uint boot_device)
 494 {
 495         struct spl_image_loader *drv =
 496                 ll_entry_start(struct spl_image_loader, spl_image_loader);
 497         const int n_ents =
 498                 ll_entry_count(struct spl_image_loader, spl_image_loader);
 499         struct spl_image_loader *entry;
 500
 501         for (entry = drv; entry != drv + n_ents; entry++) {
 502                 if (boot_device == entry->boot_device)
 503                         return entry;
 504         }
 505
 506         /* Not found */
 507         return NULL;
 508 }
 509
 510 static int spl_load_image(struct spl_image_info *spl_image,
 511                           struct spl_image_loader *loader)
 512 {
 513         int ret;
 514         struct spl_boot_device bootdev;
 515
 516         bootdev.boot_device = loader->boot_device;
 517         bootdev.boot_device_name = NULL;
 518
 519         ret = loader->load_image(spl_image, &bootdev);
 520 #ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK
 521         if (!ret && spl_image->dcrc_length) {
 522                 /* check data crc */
 523                 ulong dcrc = crc32_wd(0, (unsigned char *)spl_image->dcrc_data,
 524                                       spl_image->dcrc_length, CHUNKSZ_CRC32);
 525                 if (dcrc != spl_image->dcrc) {
 526                         puts("SPL: Image data CRC check failed!\n");
 527                         ret = -EINVAL;
 528                 }
 529         }
 530 #endif
 531         return ret;
 532 }
 533
 534 /**
 535  * boot_from_devices() - Try loading an booting U-Boot from a list of devices
 536  *
 537  * @spl_image: Place to put the image details if successful
 538  * @spl_boot_list: List of boot devices to try
 539  * @count: Number of elements in spl_boot_list
 540  * @return 0 if OK, -ve on error
 541  */
 542 static int boot_from_devices(struct spl_image_info *spl_image,
 543                              u32 spl_boot_list[], int count)
 544 {
 545         int i;
 546
 547         for (i = 0; i < count && spl_boot_list[i] != BOOT_DEVICE_NONE; i++) {
 548                 struct spl_image_loader *loader;
 549
 550                 loader = spl_ll_find_loader(spl_boot_list[i]);
 551 #if defined(CONFIG_SPL_SERIAL_SUPPORT) && defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 552                 if (loader)
 553                         printf("Trying to boot from %s\n", loader->name);
 554                 else
 555                         puts(SPL_TPL_PROMPT "Unsupported Boot Device!\n");
 556 #endif
 557                 if (loader && !spl_load_image(spl_image, loader)) {
 558                         spl_image->boot_device = spl_boot_list[i];
 559                         return 0;
 560                 }
 561         }
 562
 563         return -ENODEV;
 564 }
 565
 566 void board_init_r(gd_t *dummy1, ulong dummy2)
 567 {
 568         u32 spl_boot_list[] = {
 569                 BOOT_DEVICE_NONE,
 570                 BOOT_DEVICE_NONE,
 571                 BOOT_DEVICE_NONE,
 572                 BOOT_DEVICE_NONE,
 573                 BOOT_DEVICE_NONE,
 574         };
 575         struct spl_image_info spl_image;
 576         int ret;
 577
 578         debug(">>" SPL_TPL_PROMPT "board_init_r()\n");
 579
 580         spl_set_bd();
 581
 582 #if defined(CONFIG_SYS_SPL_MALLOC_START)
 583         mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START,
 584                         CONFIG_SYS_SPL_MALLOC_SIZE);
 585         gd->flags |= GD_FLG_FULL_MALLOC_INIT;
 586 #endif
 587         if (!(gd->flags & GD_FLG_SPL_INIT)) {
 588                 if (spl_init())
 589                         hang();
 590         }
 591 #if !defined(CONFIG_PPC) && !defined(CONFIG_ARCH_MX6)
 592         /*
 593          * timer_init() does not exist on PPC systems. The timer is initialized
 594          * and enabled (decrementer) in interrupt_init() here.
 595          */
 596         timer_init();
 597 #endif
 598
 599 #if CONFIG_IS_ENABLED(BOARD_INIT)
 600         spl_board_init();
 601 #endif
 602
 603         if (IS_ENABLED(CONFIG_SPL_OS_BOOT) || CONFIG_IS_ENABLED(HANDOFF))
 604                 dram_init_banksize();
 605
 606         bootcount_inc();
 607
 608         memset(&spl_image, '\0', sizeof(spl_image));
 609 #ifdef CONFIG_SYS_SPL_ARGS_ADDR
 610         spl_image.arg = (void *)CONFIG_SYS_SPL_ARGS_ADDR;
 611 #endif
 612         spl_image.boot_device = BOOT_DEVICE_NONE;
 613         board_boot_order(spl_boot_list);
 614
 615         if (boot_from_devices(&spl_image, spl_boot_list,
 616                               ARRAY_SIZE(spl_boot_list))) {
 617                 puts(SPL_TPL_PROMPT "failed to boot from all boot devices\n");
 618                 hang();
 619         }
 620
 621         spl_perform_fixups(&spl_image);
 622         if (CONFIG_IS_ENABLED(HANDOFF)) {
 623                 ret = write_spl_handoff();
 624                 if (ret)
 625                         printf(SPL_TPL_PROMPT
 626                                "SPL hand-off write failed (err=%d)\n", ret);
 627         }
 628         if (CONFIG_IS_ENABLED(BLOBLIST)) {
 629                 ret = bloblist_finish();
 630                 if (ret)
 631                         printf("Warning: Failed to finish bloblist (ret=%d)\n",
 632                                ret);
 633         }
 634
 635 #ifdef CONFIG_CPU_V7M
 636         spl_image.entry_point |= 0x1;
 637 #endif
 638         switch (spl_image.os) {
 639         case IH_OS_U_BOOT:
 640                 debug("Jumping to U-Boot\n");
 641                 break;
 642 #if CONFIG_IS_ENABLED(ATF)
 643         case IH_OS_ARM_TRUSTED_FIRMWARE:
 644                 debug("Jumping to U-Boot via ARM Trusted Firmware\n");
 645                 spl_invoke_atf(&spl_image);
 646                 break;
 647 #endif
 648 #if CONFIG_IS_ENABLED(OPTEE)
 649         case IH_OS_TEE:
 650                 debug("Jumping to U-Boot via OP-TEE\n");
 651                 spl_optee_entry(NULL, NULL, spl_image.fdt_addr,
 652                                 (void *)spl_image.entry_point);
 653                 break;
 654 #endif
 655 #ifdef CONFIG_SPL_OS_BOOT
 656         case IH_OS_LINUX:
 657                 debug("Jumping to Linux\n");
 658                 spl_fixup_fdt();
 659                 spl_board_prepare_for_linux();
 660                 jump_to_image_linux(&spl_image);
 661 #endif
 662         default:
 663                 debug("Unsupported OS image.. Jumping nevertheless..\n");
 664         }
 665 #if CONFIG_VAL(SYS_MALLOC_F_LEN) && !defined(CONFIG_SYS_SPL_MALLOC_SIZE)
 666         debug("SPL malloc() used 0x%lx bytes (%ld KB)\n", gd->malloc_ptr,
 667               gd->malloc_ptr / 1024);
 668 #endif
 669 #ifdef CONFIG_BOOTSTAGE_STASH
 670         bootstage_mark_name(BOOTSTAGE_ID_END_SPL, "end_spl");
 671         ret = bootstage_stash((void *)CONFIG_BOOTSTAGE_STASH_ADDR,
 672                               CONFIG_BOOTSTAGE_STASH_SIZE);
 673         if (ret)
 674                 debug("Failed to stash bootstage: err=%d\n", ret);
 675 #endif
 676
 677         debug("loaded - jumping to U-Boot...\n");
 678         spl_board_prepare_for_boot();
 679         jump_to_image_no_args(&spl_image);
 680 }
 681
 682 #ifdef CONFIG_SPL_SERIAL_SUPPORT
 683 /*
 684  * This requires UART clocks to be enabled.  In order for this to work the
 685  * caller must ensure that the gd pointer is valid.
 686  */
 687 void preloader_console_init(void)
 688 {
 689         gd->baudrate = CONFIG_BAUDRATE;
 690
 691         serial_init();          /* serial communications setup */
 692
 693         gd->have_console = 1;
 694
 695 #if CONFIG_IS_ENABLED(BANNER_PRINT)
 696         puts("\nU-Boot " SPL_TPL_NAME " " PLAIN_VERSION " (" U_BOOT_DATE " - "
 697              U_BOOT_TIME " " U_BOOT_TZ ")\n");
 698 #endif
 699 #ifdef CONFIG_SPL_DISPLAY_PRINT
 700         spl_display_print();
 701 #endif
 702 }
 703 #endif
 704
 705 /**
 706  * spl_relocate_stack_gd() - Relocate stack ready for board_init_r() execution
 707  *
 708  * Sometimes board_init_f() runs with a stack in SRAM but we want to use SDRAM
 709  * for the main board_init_r() execution. This is typically because we need
 710  * more stack space for things like the MMC sub-system.
 711  *
 712  * This function calculates the stack position, copies the global_data into
 713  * place, sets the new gd (except for ARM, for which setting GD within a C
 714  * function may not always work) and returns the new stack position. The
 715  * caller is responsible for setting up the sp register and, in the case
 716  * of ARM, setting up gd.
 717  *
 718  * All of this is done using the same layout and alignments as done in
 719  * board_init_f_init_reserve() / board_init_f_alloc_reserve().
 720  *
 721  * @return new stack location, or 0 to use the same stack
 722  */
 723 ulong spl_relocate_stack_gd(void)
 724 {
 725 #ifdef CONFIG_SPL_STACK_R
 726         gd_t *new_gd;
 727         ulong ptr = CONFIG_SPL_STACK_R_ADDR;
 728
 729 #if defined(CONFIG_SPL_SYS_MALLOC_SIMPLE) && CONFIG_VAL(SYS_MALLOC_F_LEN)
 730         if (CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN) {
 731                 ptr -= CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN;
 732                 gd->malloc_base = ptr;
 733                 gd->malloc_limit = CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN;
 734                 gd->malloc_ptr = 0;
 735         }
 736 #endif
 737         /* Get stack position: use 8-byte alignment for ABI compliance */
 738         ptr = CONFIG_SPL_STACK_R_ADDR - roundup(sizeof(gd_t),16);
 739         new_gd = (gd_t *)ptr;
 740         memcpy(new_gd, (void *)gd, sizeof(gd_t));
 741 #if CONFIG_IS_ENABLED(DM)
 742         dm_fixup_for_gd_move(new_gd);
 743 #endif
 744 #if !defined(CONFIG_ARM)
 745         gd = new_gd;
 746 #endif
 747         return ptr;
 748 #else
 749         return 0;
 750 #endif
 751 }