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 #include <wdt.h>
  26
  27 DECLARE_GLOBAL_DATA_PTR;
  28
  29 #ifndef CONFIG_SYS_UBOOT_START
  30 #define CONFIG_SYS_UBOOT_START  CONFIG_SYS_TEXT_BASE
  31 #endif
  32 #ifndef CONFIG_SYS_MONITOR_LEN
  33 /* Unknown U-Boot size, let's assume it will not be more than 200 KB */
  34 #define CONFIG_SYS_MONITOR_LEN  (200 * 1024)
  35 #endif
  36
  37 u32 *boot_params_ptr = NULL;
  38
  39 /* See spl.h for information about this */
  40 binman_sym_declare(ulong, u_boot_any, image_pos);
  41
  42 /* Define board data structure */
  43 static bd_t bdata __attribute__ ((section(".data")));
  44
  45 /*
  46  * Board-specific Platform code can reimplement show_boot_progress () if needed
  47  */
  48 __weak void show_boot_progress(int val) {}
  49
  50 #if defined(CONFIG_SPL_OS_BOOT) || CONFIG_IS_ENABLED(HANDOFF)
  51 /* weak, default platform-specific function to initialize dram banks */
  52 __weak int dram_init_banksize(void)
  53 {
  54         return 0;
  55 }
  56 #endif
  57
  58 /*
  59  * Default function to determine if u-boot or the OS should
  60  * be started. This implementation always returns 1.
  61  *
  62  * Please implement your own board specific funcion to do this.
  63  *
  64  * RETURN
  65  * 0 to not start u-boot
  66  * positive if u-boot should start
  67  */
  68 #ifdef CONFIG_SPL_OS_BOOT
  69 __weak int spl_start_uboot(void)
  70 {
  71         puts(SPL_TPL_PROMPT
  72              "Please implement spl_start_uboot() for your board\n");
  73         puts(SPL_TPL_PROMPT "Direct Linux boot not active!\n");
  74         return 1;
  75 }
  76
  77 /*
  78  * Weak default function for arch specific zImage check. Return zero
  79  * and fill start and end address if image is recognized.
  80  */
  81 int __weak bootz_setup(ulong image, ulong *start, ulong *end)
  82 {
  83          return 1;
  84 }
  85 #endif
  86
  87 /* Weak default function for arch/board-specific fixups to the spl_image_info */
  88 void __weak spl_perform_fixups(struct spl_image_info *spl_image)
  89 {
  90 }
  91
  92 void spl_fixup_fdt(void)
  93 {
  94 #if defined(CONFIG_SPL_OF_LIBFDT) && defined(CONFIG_SYS_SPL_ARGS_ADDR)
  95         void *fdt_blob = (void *)CONFIG_SYS_SPL_ARGS_ADDR;
  96         int err;
  97
  98         err = fdt_check_header(fdt_blob);
  99         if (err < 0) {
 100                 printf("fdt_root: %s\n", fdt_strerror(err));
 101                 return;
 102         }
 103
 104         /* fixup the memory dt node */
 105         err = fdt_shrink_to_minimum(fdt_blob, 0);
 106         if (err == 0) {
 107                 printf(SPL_TPL_PROMPT "fdt_shrink_to_minimum err - %d\n", err);
 108                 return;
 109         }
 110
 111         err = arch_fixup_fdt(fdt_blob);
 112         if (err) {
 113                 printf(SPL_TPL_PROMPT "arch_fixup_fdt err - %d\n", err);
 114                 return;
 115         }
 116 #endif
 117 }
 118
 119 /*
 120  * Weak default function for board specific cleanup/preparation before
 121  * Linux boot. Some boards/platforms might not need it, so just provide
 122  * an empty stub here.
 123  */
 124 __weak void spl_board_prepare_for_linux(void)
 125 {
 126         /* Nothing to do! */
 127 }
 128
 129 __weak void spl_board_prepare_for_boot(void)
 130 {
 131         /* Nothing to do! */
 132 }
 133
 134 __weak struct image_header *spl_get_load_buffer(ssize_t offset, size_t size)
 135 {
 136         return (struct image_header *)(CONFIG_SYS_TEXT_BASE + offset);
 137 }
 138
 139 void spl_set_header_raw_uboot(struct spl_image_info *spl_image)
 140 {
 141         ulong u_boot_pos = binman_sym(ulong, u_boot_any, image_pos);
 142
 143         spl_image->size = CONFIG_SYS_MONITOR_LEN;
 144
 145         /*
 146          * Binman error cases: address of the end of the previous region or the
 147          * start of the image's entry area (usually 0) if there is no previous
 148          * region.
 149          */
 150         if (u_boot_pos && u_boot_pos != BINMAN_SYM_MISSING) {
 151                 /* Binman does not support separated entry addresses */
 152                 spl_image->entry_point = u_boot_pos;
 153                 spl_image->load_addr = u_boot_pos;
 154         } else {
 155                 spl_image->entry_point = CONFIG_SYS_UBOOT_START;
 156                 spl_image->load_addr = CONFIG_SYS_TEXT_BASE;
 157         }
 158         spl_image->os = IH_OS_U_BOOT;
 159         spl_image->name = "U-Boot";
 160 }
 161
 162 #ifdef CONFIG_SPL_LOAD_FIT_FULL
 163 /* Parse and load full fitImage in SPL */
 164 static int spl_load_fit_image(struct spl_image_info *spl_image,
 165                               const struct image_header *header)
 166 {
 167         bootm_headers_t images;
 168         const char *fit_uname_config = NULL;
 169         const char *fit_uname_fdt = FIT_FDT_PROP;
 170         const char *uname;
 171         ulong fw_data = 0, dt_data = 0, img_data = 0;
 172         ulong fw_len = 0, dt_len = 0, img_len = 0;
 173         int idx, conf_noffset;
 174         int ret;
 175
 176 #ifdef CONFIG_SPL_FIT_SIGNATURE
 177         images.verify = 1;
 178 #endif
 179         ret = fit_image_load(&images, (ulong)header,
 180                              NULL, &fit_uname_config,
 181                              IH_ARCH_DEFAULT, IH_TYPE_STANDALONE, -1,
 182                              FIT_LOAD_REQUIRED, &fw_data, &fw_len);
 183         if (ret < 0)
 184                 return ret;
 185
 186         spl_image->size = fw_len;
 187         spl_image->entry_point = fw_data;
 188         spl_image->load_addr = fw_data;
 189         spl_image->os = IH_OS_U_BOOT;
 190         spl_image->name = "U-Boot";
 191
 192         debug(SPL_TPL_PROMPT "payload image: %32s load addr: 0x%lx size: %d\n",
 193               spl_image->name, spl_image->load_addr, spl_image->size);
 194
 195 #ifdef CONFIG_SPL_FIT_SIGNATURE
 196         images.verify = 1;
 197 #endif
 198         fit_image_load(&images, (ulong)header,
 199                        &fit_uname_fdt, &fit_uname_config,
 200                        IH_ARCH_DEFAULT, IH_TYPE_FLATDT, -1,
 201                        FIT_LOAD_OPTIONAL, &dt_data, &dt_len);
 202
 203         conf_noffset = fit_conf_get_node((const void *)header,
 204                                          fit_uname_config);
 205         if (conf_noffset <= 0)
 206                 return 0;
 207
 208         for (idx = 0;
 209              uname = fdt_stringlist_get((const void *)header, conf_noffset,
 210                                         FIT_LOADABLE_PROP, idx,
 211                                 NULL), uname;
 212              idx++)
 213         {
 214 #ifdef CONFIG_SPL_FIT_SIGNATURE
 215                 images.verify = 1;
 216 #endif
 217                 ret = fit_image_load(&images, (ulong)header,
 218                                      &uname, &fit_uname_config,
 219                                      IH_ARCH_DEFAULT, IH_TYPE_LOADABLE, -1,
 220                                      FIT_LOAD_OPTIONAL_NON_ZERO,
 221                                      &img_data, &img_len);
 222                 if (ret < 0)
 223                         return ret;
 224         }
 225
 226         return 0;
 227 }
 228 #endif
 229
 230 int spl_parse_image_header(struct spl_image_info *spl_image,
 231                            const struct image_header *header)
 232 {
 233 #ifdef CONFIG_SPL_LOAD_FIT_FULL
 234         int ret = spl_load_fit_image(spl_image, header);
 235
 236         if (!ret)
 237                 return ret;
 238 #endif
 239         if (image_get_magic(header) == IH_MAGIC) {
 240 #ifdef CONFIG_SPL_LEGACY_IMAGE_SUPPORT
 241                 u32 header_size = sizeof(struct image_header);
 242
 243 #ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK
 244                 /* check uImage header CRC */
 245                 if (!image_check_hcrc(header)) {
 246                         puts("SPL: Image header CRC check failed!\n");
 247                         return -EINVAL;
 248                 }
 249 #endif
 250
 251                 if (spl_image->flags & SPL_COPY_PAYLOAD_ONLY) {
 252                         /*
 253                          * On some system (e.g. powerpc), the load-address and
 254                          * entry-point is located at address 0. We can't load
 255                          * to 0-0x40. So skip header in this case.
 256                          */
 257                         spl_image->load_addr = image_get_load(header);
 258                         spl_image->entry_point = image_get_ep(header);
 259                         spl_image->size = image_get_data_size(header);
 260                 } else {
 261                         spl_image->entry_point = image_get_load(header);
 262                         /* Load including the header */
 263                         spl_image->load_addr = spl_image->entry_point -
 264                                 header_size;
 265                         spl_image->size = image_get_data_size(header) +
 266                                 header_size;
 267                 }
 268 #ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK
 269                 /* store uImage data length and CRC to check later */
 270                 spl_image->dcrc_data = image_get_load(header);
 271                 spl_image->dcrc_length = image_get_data_size(header);
 272                 spl_image->dcrc = image_get_dcrc(header);
 273 #endif
 274
 275                 spl_image->os = image_get_os(header);
 276                 spl_image->name = image_get_name(header);
 277                 debug(SPL_TPL_PROMPT
 278                       "payload image: %32s load addr: 0x%lx size: %d\n",
 279                       spl_image->name, spl_image->load_addr, spl_image->size);
 280 #else
 281                 /* LEGACY image not supported */
 282                 debug("Legacy boot image support not enabled, proceeding to other boot methods\n");
 283                 return -EINVAL;
 284 #endif
 285         } else {
 286 #ifdef CONFIG_SPL_PANIC_ON_RAW_IMAGE
 287                 /*
 288                  * CONFIG_SPL_PANIC_ON_RAW_IMAGE is defined when the
 289                  * code which loads images in SPL cannot guarantee that
 290                  * absolutely all read errors will be reported.
 291                  * An example is the LPC32XX MLC NAND driver, which
 292                  * will consider that a completely unreadable NAND block
 293                  * is bad, and thus should be skipped silently.
 294                  */
 295                 panic("** no mkimage signature but raw image not supported");
 296 #endif
 297
 298 #ifdef CONFIG_SPL_OS_BOOT
 299                 ulong start, end;
 300
 301                 if (!bootz_setup((ulong)header, &start, &end)) {
 302                         spl_image->name = "Linux";
 303                         spl_image->os = IH_OS_LINUX;
 304                         spl_image->load_addr = CONFIG_SYS_LOAD_ADDR;
 305                         spl_image->entry_point = CONFIG_SYS_LOAD_ADDR;
 306                         spl_image->size = end - start;
 307                         debug(SPL_TPL_PROMPT
 308                               "payload zImage, load addr: 0x%lx size: %d\n",
 309                               spl_image->load_addr, spl_image->size);
 310                         return 0;
 311                 }
 312 #endif
 313
 314 #ifdef CONFIG_SPL_RAW_IMAGE_SUPPORT
 315                 /* Signature not found - assume u-boot.bin */
 316                 debug("mkimage signature not found - ih_magic = %x\n",
 317                         header->ih_magic);
 318                 spl_set_header_raw_uboot(spl_image);
 319 #else
 320                 /* RAW image not supported, proceed to other boot methods. */
 321                 debug("Raw boot image support not enabled, proceeding to other boot methods\n");
 322                 return -EINVAL;
 323 #endif
 324         }
 325
 326         return 0;
 327 }
 328
 329 __weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
 330 {
 331         typedef void __noreturn (*image_entry_noargs_t)(void);
 332
 333         image_entry_noargs_t image_entry =
 334                 (image_entry_noargs_t)spl_image->entry_point;
 335
 336         debug("image entry point: 0x%lx\n", spl_image->entry_point);
 337         image_entry();
 338 }
 339
 340 #if CONFIG_IS_ENABLED(HANDOFF)
 341 /**
 342  * Set up the SPL hand-off information
 343  *
 344  * This is initially empty (zero) but can be written by
 345  */
 346 static int setup_spl_handoff(void)
 347 {
 348         struct spl_handoff *ho;
 349
 350         ho = bloblist_ensure(BLOBLISTT_SPL_HANDOFF, sizeof(struct spl_handoff));
 351         if (!ho)
 352                 return -ENOENT;
 353
 354         return 0;
 355 }
 356
 357 static int write_spl_handoff(void)
 358 {
 359         struct spl_handoff *ho;
 360
 361         ho = bloblist_find(BLOBLISTT_SPL_HANDOFF, sizeof(struct spl_handoff));
 362         if (!ho)
 363                 return -ENOENT;
 364         handoff_save_dram(ho);
 365 #ifdef CONFIG_SANDBOX
 366         ho->arch.magic = TEST_HANDOFF_MAGIC;
 367 #endif
 368         debug(SPL_TPL_PROMPT "Wrote SPL handoff\n");
 369
 370         return 0;
 371 }
 372 #else
 373 static inline int setup_spl_handoff(void) { return 0; }
 374 static inline int write_spl_handoff(void) { return 0; }
 375
 376 #endif /* HANDOFF */
 377
 378 static int spl_common_init(bool setup_malloc)
 379 {
 380         int ret;
 381
 382 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
 383         if (setup_malloc) {
 384 #ifdef CONFIG_MALLOC_F_ADDR
 385                 gd->malloc_base = CONFIG_MALLOC_F_ADDR;
 386 #endif
 387                 gd->malloc_limit = CONFIG_VAL(SYS_MALLOC_F_LEN);
 388                 gd->malloc_ptr = 0;
 389         }
 390 #endif
 391         ret = bootstage_init(true);
 392         if (ret) {
 393                 debug("%s: Failed to set up bootstage: ret=%d\n", __func__,
 394                       ret);
 395                 return ret;
 396         }
 397         bootstage_mark_name(BOOTSTAGE_ID_START_SPL, "spl");
 398 #if CONFIG_IS_ENABLED(LOG)
 399         ret = log_init();
 400         if (ret) {
 401                 debug("%s: Failed to set up logging\n", __func__);
 402                 return ret;
 403         }
 404 #endif
 405         if (CONFIG_IS_ENABLED(BLOBLIST)) {
 406                 ret = bloblist_init();
 407                 if (ret) {
 408                         debug("%s: Failed to set up bloblist: ret=%d\n",
 409                               __func__, ret);
 410                         return ret;
 411                 }
 412         }
 413         if (CONFIG_IS_ENABLED(HANDOFF)) {
 414                 int ret;
 415
 416                 ret = setup_spl_handoff();
 417                 if (ret) {
 418                         puts(SPL_TPL_PROMPT "Cannot set up SPL handoff\n");
 419                         hang();
 420                 }
 421         }
 422         if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) {
 423                 ret = fdtdec_setup();
 424                 if (ret) {
 425                         debug("fdtdec_setup() returned error %d\n", ret);
 426                         return ret;
 427                 }
 428         }
 429         if (CONFIG_IS_ENABLED(DM)) {
 430                 bootstage_start(BOOTSTATE_ID_ACCUM_DM_SPL, "dm_spl");
 431                 /* With CONFIG_SPL_OF_PLATDATA, bring in all devices */
 432                 ret = dm_init_and_scan(!CONFIG_IS_ENABLED(OF_PLATDATA));
 433                 bootstage_accum(BOOTSTATE_ID_ACCUM_DM_SPL);
 434                 if (ret) {
 435                         debug("dm_init_and_scan() returned error %d\n", ret);
 436                         return ret;
 437                 }
 438         }
 439
 440         return 0;
 441 }
 442
 443 void spl_set_bd(void)
 444 {
 445         /*
 446          * NOTE: On some platforms (e.g. x86) bdata may be in flash and not
 447          * writeable.
 448          */
 449         if (!gd->bd)
 450                 gd->bd = &bdata;
 451 }
 452
 453 int spl_early_init(void)
 454 {
 455         int ret;
 456
 457         debug("%s\n", __func__);
 458
 459         ret = spl_common_init(true);
 460         if (ret)
 461                 return ret;
 462         gd->flags |= GD_FLG_SPL_EARLY_INIT;
 463
 464         return 0;
 465 }
 466
 467 int spl_init(void)
 468 {
 469         int ret;
 470         bool setup_malloc = !(IS_ENABLED(CONFIG_SPL_STACK_R) &&
 471                         IS_ENABLED(CONFIG_SPL_SYS_MALLOC_SIMPLE));
 472
 473         debug("%s\n", __func__);
 474
 475         if (!(gd->flags & GD_FLG_SPL_EARLY_INIT)) {
 476                 ret = spl_common_init(setup_malloc);
 477                 if (ret)
 478                         return ret;
 479         }
 480         gd->flags |= GD_FLG_SPL_INIT;
 481
 482         return 0;
 483 }
 484
 485 #ifndef BOOT_DEVICE_NONE
 486 #define BOOT_DEVICE_NONE 0xdeadbeef
 487 #endif
 488
 489 __weak void board_boot_order(u32 *spl_boot_list)
 490 {
 491         spl_boot_list[0] = spl_boot_device();
 492 }
 493
 494 static struct spl_image_loader *spl_ll_find_loader(uint boot_device)
 495 {
 496         struct spl_image_loader *drv =
 497                 ll_entry_start(struct spl_image_loader, spl_image_loader);
 498         const int n_ents =
 499                 ll_entry_count(struct spl_image_loader, spl_image_loader);
 500         struct spl_image_loader *entry;
 501
 502         for (entry = drv; entry != drv + n_ents; entry++) {
 503                 if (boot_device == entry->boot_device)
 504                         return entry;
 505         }
 506
 507         /* Not found */
 508         return NULL;
 509 }
 510
 511 static int spl_load_image(struct spl_image_info *spl_image,
 512                           struct spl_image_loader *loader)
 513 {
 514         int ret;
 515         struct spl_boot_device bootdev;
 516
 517         bootdev.boot_device = loader->boot_device;
 518         bootdev.boot_device_name = NULL;
 519
 520         ret = loader->load_image(spl_image, &bootdev);
 521 #ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK
 522         if (!ret && spl_image->dcrc_length) {
 523                 /* check data crc */
 524                 ulong dcrc = crc32_wd(0, (unsigned char *)spl_image->dcrc_data,
 525                                       spl_image->dcrc_length, CHUNKSZ_CRC32);
 526                 if (dcrc != spl_image->dcrc) {
 527                         puts("SPL: Image data CRC check failed!\n");
 528                         ret = -EINVAL;
 529                 }
 530         }
 531 #endif
 532         return ret;
 533 }
 534
 535 /**
 536  * boot_from_devices() - Try loading an booting U-Boot from a list of devices
 537  *
 538  * @spl_image: Place to put the image details if successful
 539  * @spl_boot_list: List of boot devices to try
 540  * @count: Number of elements in spl_boot_list
 541  * @return 0 if OK, -ve on error
 542  */
 543 static int boot_from_devices(struct spl_image_info *spl_image,
 544                              u32 spl_boot_list[], int count)
 545 {
 546         int i;
 547
 548         for (i = 0; i < count && spl_boot_list[i] != BOOT_DEVICE_NONE; i++) {
 549                 struct spl_image_loader *loader;
 550
 551                 loader = spl_ll_find_loader(spl_boot_list[i]);
 552 #if defined(CONFIG_SPL_SERIAL_SUPPORT) && defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 553                 if (loader)
 554                         printf("Trying to boot from %s\n", loader->name);
 555                 else
 556                         puts(SPL_TPL_PROMPT "Unsupported Boot Device!\n");
 557 #endif
 558                 if (loader && !spl_load_image(spl_image, loader)) {
 559                         spl_image->boot_device = spl_boot_list[i];
 560                         return 0;
 561                 }
 562         }
 563
 564         return -ENODEV;
 565 }
 566
 567 void board_init_r(gd_t *dummy1, ulong dummy2)
 568 {
 569         u32 spl_boot_list[] = {
 570                 BOOT_DEVICE_NONE,
 571                 BOOT_DEVICE_NONE,
 572                 BOOT_DEVICE_NONE,
 573                 BOOT_DEVICE_NONE,
 574                 BOOT_DEVICE_NONE,
 575         };
 576         struct spl_image_info spl_image;
 577         int ret;
 578
 579         debug(">>" SPL_TPL_PROMPT "board_init_r()\n");
 580
 581         spl_set_bd();
 582
 583 #if defined(CONFIG_SYS_SPL_MALLOC_START)
 584         mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START,
 585                         CONFIG_SYS_SPL_MALLOC_SIZE);
 586         gd->flags |= GD_FLG_FULL_MALLOC_INIT;
 587 #endif
 588         if (!(gd->flags & GD_FLG_SPL_INIT)) {
 589                 if (spl_init())
 590                         hang();
 591         }
 592 #if !defined(CONFIG_PPC) && !defined(CONFIG_ARCH_MX6)
 593         /*
 594          * timer_init() does not exist on PPC systems. The timer is initialized
 595          * and enabled (decrementer) in interrupt_init() here.
 596          */
 597         timer_init();
 598 #endif
 599
 600 #if CONFIG_IS_ENABLED(BOARD_INIT)
 601         spl_board_init();
 602 #endif
 603
 604 #if defined(CONFIG_SPL_WATCHDOG_SUPPORT) && defined(CONFIG_WDT)
 605         initr_watchdog();
 606 #endif
 607
 608         if (IS_ENABLED(CONFIG_SPL_OS_BOOT) || CONFIG_IS_ENABLED(HANDOFF))
 609                 dram_init_banksize();
 610
 611         bootcount_inc();
 612
 613         memset(&spl_image, '\0', sizeof(spl_image));
 614 #ifdef CONFIG_SYS_SPL_ARGS_ADDR
 615         spl_image.arg = (void *)CONFIG_SYS_SPL_ARGS_ADDR;
 616 #endif
 617         spl_image.boot_device = BOOT_DEVICE_NONE;
 618         board_boot_order(spl_boot_list);
 619
 620         if (boot_from_devices(&spl_image, spl_boot_list,
 621                               ARRAY_SIZE(spl_boot_list))) {
 622                 puts(SPL_TPL_PROMPT "failed to boot from all boot devices\n");
 623                 hang();
 624         }
 625
 626         spl_perform_fixups(&spl_image);
 627         if (CONFIG_IS_ENABLED(HANDOFF)) {
 628                 ret = write_spl_handoff();
 629                 if (ret)
 630                         printf(SPL_TPL_PROMPT
 631                                "SPL hand-off write failed (err=%d)\n", ret);
 632         }
 633         if (CONFIG_IS_ENABLED(BLOBLIST)) {
 634                 ret = bloblist_finish();
 635                 if (ret)
 636                         printf("Warning: Failed to finish bloblist (ret=%d)\n",
 637                                ret);
 638         }
 639
 640 #ifdef CONFIG_CPU_V7M
 641         spl_image.entry_point |= 0x1;
 642 #endif
 643         switch (spl_image.os) {
 644         case IH_OS_U_BOOT:
 645                 debug("Jumping to U-Boot\n");
 646                 break;
 647 #if CONFIG_IS_ENABLED(ATF)
 648         case IH_OS_ARM_TRUSTED_FIRMWARE:
 649                 debug("Jumping to U-Boot via ARM Trusted Firmware\n");
 650                 spl_invoke_atf(&spl_image);
 651                 break;
 652 #endif
 653 #if CONFIG_IS_ENABLED(OPTEE)
 654         case IH_OS_TEE:
 655                 debug("Jumping to U-Boot via OP-TEE\n");
 656                 spl_optee_entry(NULL, NULL, spl_image.fdt_addr,
 657                                 (void *)spl_image.entry_point);
 658                 break;
 659 #endif
 660 #ifdef CONFIG_SPL_OS_BOOT
 661         case IH_OS_LINUX:
 662                 debug("Jumping to Linux\n");
 663                 spl_fixup_fdt();
 664                 spl_board_prepare_for_linux();
 665                 jump_to_image_linux(&spl_image);
 666 #endif
 667         default:
 668                 debug("Unsupported OS image.. Jumping nevertheless..\n");
 669         }
 670 #if CONFIG_VAL(SYS_MALLOC_F_LEN) && !defined(CONFIG_SYS_SPL_MALLOC_SIZE)
 671         debug("SPL malloc() used 0x%lx bytes (%ld KB)\n", gd->malloc_ptr,
 672               gd->malloc_ptr / 1024);
 673 #endif
 674 #ifdef CONFIG_BOOTSTAGE_STASH
 675         bootstage_mark_name(BOOTSTAGE_ID_END_SPL, "end_spl");
 676         ret = bootstage_stash((void *)CONFIG_BOOTSTAGE_STASH_ADDR,
 677                               CONFIG_BOOTSTAGE_STASH_SIZE);
 678         if (ret)
 679                 debug("Failed to stash bootstage: err=%d\n", ret);
 680 #endif
 681
 682         debug("loaded - jumping to U-Boot...\n");
 683         spl_board_prepare_for_boot();
 684         jump_to_image_no_args(&spl_image);
 685 }
 686
 687 #ifdef CONFIG_SPL_SERIAL_SUPPORT
 688 /*
 689  * This requires UART clocks to be enabled.  In order for this to work the
 690  * caller must ensure that the gd pointer is valid.
 691  */
 692 void preloader_console_init(void)
 693 {
 694         gd->baudrate = CONFIG_BAUDRATE;
 695
 696         serial_init();          /* serial communications setup */
 697
 698         gd->have_console = 1;
 699
 700 #if CONFIG_IS_ENABLED(BANNER_PRINT)
 701         puts("\nU-Boot " SPL_TPL_NAME " " PLAIN_VERSION " (" U_BOOT_DATE " - "
 702              U_BOOT_TIME " " U_BOOT_TZ ")\n");
 703 #endif
 704 #ifdef CONFIG_SPL_DISPLAY_PRINT
 705         spl_display_print();
 706 #endif
 707 }
 708 #endif
 709
 710 /**
 711  * spl_relocate_stack_gd() - Relocate stack ready for board_init_r() execution
 712  *
 713  * Sometimes board_init_f() runs with a stack in SRAM but we want to use SDRAM
 714  * for the main board_init_r() execution. This is typically because we need
 715  * more stack space for things like the MMC sub-system.
 716  *
 717  * This function calculates the stack position, copies the global_data into
 718  * place, sets the new gd (except for ARM, for which setting GD within a C
 719  * function may not always work) and returns the new stack position. The
 720  * caller is responsible for setting up the sp register and, in the case
 721  * of ARM, setting up gd.
 722  *
 723  * All of this is done using the same layout and alignments as done in
 724  * board_init_f_init_reserve() / board_init_f_alloc_reserve().
 725  *
 726  * @return new stack location, or 0 to use the same stack
 727  */
 728 ulong spl_relocate_stack_gd(void)
 729 {
 730 #ifdef CONFIG_SPL_STACK_R
 731         gd_t *new_gd;
 732         ulong ptr = CONFIG_SPL_STACK_R_ADDR;
 733
 734 #if defined(CONFIG_SPL_SYS_MALLOC_SIMPLE) && CONFIG_VAL(SYS_MALLOC_F_LEN)
 735         if (CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN) {
 736                 debug("SPL malloc() before relocation used 0x%lx bytes (%ld KB)\n",
 737                       gd->malloc_ptr, gd->malloc_ptr / 1024);
 738                 ptr -= CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN;
 739                 gd->malloc_base = ptr;
 740                 gd->malloc_limit = CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN;
 741                 gd->malloc_ptr = 0;
 742         }
 743 #endif
 744         /* Get stack position: use 8-byte alignment for ABI compliance */
 745         ptr = CONFIG_SPL_STACK_R_ADDR - roundup(sizeof(gd_t),16);
 746         new_gd = (gd_t *)ptr;
 747         memcpy(new_gd, (void *)gd, sizeof(gd_t));
 748 #if CONFIG_IS_ENABLED(DM)
 749         dm_fixup_for_gd_move(new_gd);
 750 #endif
 751 #if !defined(CONFIG_ARM)
 752         gd = new_gd;
 753 #endif
 754         return ptr;
 755 #else
 756         return 0;
 757 #endif
 758 }