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 <[email protected]>
   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         ret = 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         if (ret >= 0)
 203                 spl_image->fdt_addr = (void *)dt_data;
 204
 205         conf_noffset = fit_conf_get_node((const void *)header,
 206                                          fit_uname_config);
 207         if (conf_noffset <= 0)
 208                 return 0;
 209
 210         for (idx = 0;
 211              uname = fdt_stringlist_get((const void *)header, conf_noffset,
 212                                         FIT_LOADABLE_PROP, idx,
 213                                 NULL), uname;
 214              idx++)
 215         {
 216 #ifdef CONFIG_SPL_FIT_SIGNATURE
 217                 images.verify = 1;
 218 #endif
 219                 ret = fit_image_load(&images, (ulong)header,
 220                                      &uname, &fit_uname_config,
 221                                      IH_ARCH_DEFAULT, IH_TYPE_LOADABLE, -1,
 222                                      FIT_LOAD_OPTIONAL_NON_ZERO,
 223                                      &img_data, &img_len);
 224                 if (ret < 0)
 225                         return ret;
 226         }
 227
 228         return 0;
 229 }
 230 #endif
 231
 232 int spl_parse_image_header(struct spl_image_info *spl_image,
 233                            const struct image_header *header)
 234 {
 235 #ifdef CONFIG_SPL_LOAD_FIT_FULL
 236         int ret = spl_load_fit_image(spl_image, header);
 237
 238         if (!ret)
 239                 return ret;
 240 #endif
 241         if (image_get_magic(header) == IH_MAGIC) {
 242 #ifdef CONFIG_SPL_LEGACY_IMAGE_SUPPORT
 243                 u32 header_size = sizeof(struct image_header);
 244
 245 #ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK
 246                 /* check uImage header CRC */
 247                 if (!image_check_hcrc(header)) {
 248                         puts("SPL: Image header CRC check failed!\n");
 249                         return -EINVAL;
 250                 }
 251 #endif
 252
 253                 if (spl_image->flags & SPL_COPY_PAYLOAD_ONLY) {
 254                         /*
 255                          * On some system (e.g. powerpc), the load-address and
 256                          * entry-point is located at address 0. We can't load
 257                          * to 0-0x40. So skip header in this case.
 258                          */
 259                         spl_image->load_addr = image_get_load(header);
 260                         spl_image->entry_point = image_get_ep(header);
 261                         spl_image->size = image_get_data_size(header);
 262                 } else {
 263                         spl_image->entry_point = image_get_load(header);
 264                         /* Load including the header */
 265                         spl_image->load_addr = spl_image->entry_point -
 266                                 header_size;
 267                         spl_image->size = image_get_data_size(header) +
 268                                 header_size;
 269                 }
 270 #ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK
 271                 /* store uImage data length and CRC to check later */
 272                 spl_image->dcrc_data = image_get_load(header);
 273                 spl_image->dcrc_length = image_get_data_size(header);
 274                 spl_image->dcrc = image_get_dcrc(header);
 275 #endif
 276
 277                 spl_image->os = image_get_os(header);
 278                 spl_image->name = image_get_name(header);
 279                 debug(SPL_TPL_PROMPT
 280                       "payload image: %32s load addr: 0x%lx size: %d\n",
 281                       spl_image->name, spl_image->load_addr, spl_image->size);
 282 #else
 283                 /* LEGACY image not supported */
 284                 debug("Legacy boot image support not enabled, proceeding to other boot methods\n");
 285                 return -EINVAL;
 286 #endif
 287         } else {
 288 #ifdef CONFIG_SPL_PANIC_ON_RAW_IMAGE
 289                 /*
 290                  * CONFIG_SPL_PANIC_ON_RAW_IMAGE is defined when the
 291                  * code which loads images in SPL cannot guarantee that
 292                  * absolutely all read errors will be reported.
 293                  * An example is the LPC32XX MLC NAND driver, which
 294                  * will consider that a completely unreadable NAND block
 295                  * is bad, and thus should be skipped silently.
 296                  */
 297                 panic("** no mkimage signature but raw image not supported");
 298 #endif
 299
 300 #ifdef CONFIG_SPL_OS_BOOT
 301                 ulong start, end;
 302
 303                 if (!bootz_setup((ulong)header, &start, &end)) {
 304                         spl_image->name = "Linux";
 305                         spl_image->os = IH_OS_LINUX;
 306                         spl_image->load_addr = CONFIG_SYS_LOAD_ADDR;
 307                         spl_image->entry_point = CONFIG_SYS_LOAD_ADDR;
 308                         spl_image->size = end - start;
 309                         debug(SPL_TPL_PROMPT
 310                               "payload zImage, load addr: 0x%lx size: %d\n",
 311                               spl_image->load_addr, spl_image->size);
 312                         return 0;
 313                 }
 314 #endif
 315
 316 #ifdef CONFIG_SPL_RAW_IMAGE_SUPPORT
 317                 /* Signature not found - assume u-boot.bin */
 318                 debug("mkimage signature not found - ih_magic = %x\n",
 319                         header->ih_magic);
 320                 spl_set_header_raw_uboot(spl_image);
 321 #else
 322                 /* RAW image not supported, proceed to other boot methods. */
 323                 debug("Raw boot image support not enabled, proceeding to other boot methods\n");
 324                 return -EINVAL;
 325 #endif
 326         }
 327
 328         return 0;
 329 }
 330
 331 __weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
 332 {
 333         typedef void __noreturn (*image_entry_noargs_t)(void);
 334
 335         image_entry_noargs_t image_entry =
 336                 (image_entry_noargs_t)spl_image->entry_point;
 337
 338         debug("image entry point: 0x%lx\n", spl_image->entry_point);
 339         image_entry();
 340 }
 341
 342 #if CONFIG_IS_ENABLED(HANDOFF)
 343 /**
 344  * Set up the SPL hand-off information
 345  *
 346  * This is initially empty (zero) but can be written by
 347  */
 348 static int setup_spl_handoff(void)
 349 {
 350         struct spl_handoff *ho;
 351
 352         ho = bloblist_ensure(BLOBLISTT_SPL_HANDOFF, sizeof(struct spl_handoff));
 353         if (!ho)
 354                 return -ENOENT;
 355
 356         return 0;
 357 }
 358
 359 static int write_spl_handoff(void)
 360 {
 361         struct spl_handoff *ho;
 362
 363         ho = bloblist_find(BLOBLISTT_SPL_HANDOFF, sizeof(struct spl_handoff));
 364         if (!ho)
 365                 return -ENOENT;
 366         handoff_save_dram(ho);
 367 #ifdef CONFIG_SANDBOX
 368         ho->arch.magic = TEST_HANDOFF_MAGIC;
 369 #endif
 370         debug(SPL_TPL_PROMPT "Wrote SPL handoff\n");
 371
 372         return 0;
 373 }
 374 #else
 375 static inline int setup_spl_handoff(void) { return 0; }
 376 static inline int write_spl_handoff(void) { return 0; }
 377
 378 #endif /* HANDOFF */
 379
 380 static int spl_common_init(bool setup_malloc)
 381 {
 382         int ret;
 383
 384 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
 385         if (setup_malloc) {
 386 #ifdef CONFIG_MALLOC_F_ADDR
 387                 gd->malloc_base = CONFIG_MALLOC_F_ADDR;
 388 #endif
 389                 gd->malloc_limit = CONFIG_VAL(SYS_MALLOC_F_LEN);
 390                 gd->malloc_ptr = 0;
 391         }
 392 #endif
 393         ret = bootstage_init(true);
 394         if (ret) {
 395                 debug("%s: Failed to set up bootstage: ret=%d\n", __func__,
 396                       ret);
 397                 return ret;
 398         }
 399         bootstage_mark_name(BOOTSTAGE_ID_START_SPL, "spl");
 400 #if CONFIG_IS_ENABLED(LOG)
 401         ret = log_init();
 402         if (ret) {
 403                 debug("%s: Failed to set up logging\n", __func__);
 404                 return ret;
 405         }
 406 #endif
 407         if (CONFIG_IS_ENABLED(BLOBLIST)) {
 408                 ret = bloblist_init();
 409                 if (ret) {
 410                         debug("%s: Failed to set up bloblist: ret=%d\n",
 411                               __func__, ret);
 412                         return ret;
 413                 }
 414         }
 415         if (CONFIG_IS_ENABLED(HANDOFF)) {
 416                 int ret;
 417
 418                 ret = setup_spl_handoff();
 419                 if (ret) {
 420                         puts(SPL_TPL_PROMPT "Cannot set up SPL handoff\n");
 421                         hang();
 422                 }
 423         }
 424         if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) {
 425                 ret = fdtdec_setup();
 426                 if (ret) {
 427                         debug("fdtdec_setup() returned error %d\n", ret);
 428                         return ret;
 429                 }
 430         }
 431         if (CONFIG_IS_ENABLED(DM)) {
 432                 bootstage_start(BOOTSTATE_ID_ACCUM_DM_SPL, "dm_spl");
 433                 /* With CONFIG_SPL_OF_PLATDATA, bring in all devices */
 434                 ret = dm_init_and_scan(!CONFIG_IS_ENABLED(OF_PLATDATA));
 435                 bootstage_accum(BOOTSTATE_ID_ACCUM_DM_SPL);
 436                 if (ret) {
 437                         debug("dm_init_and_scan() returned error %d\n", ret);
 438                         return ret;
 439                 }
 440         }
 441
 442         return 0;
 443 }
 444
 445 void spl_set_bd(void)
 446 {
 447         /*
 448          * NOTE: On some platforms (e.g. x86) bdata may be in flash and not
 449          * writeable.
 450          */
 451         if (!gd->bd)
 452                 gd->bd = &bdata;
 453 }
 454
 455 int spl_early_init(void)
 456 {
 457         int ret;
 458
 459         debug("%s\n", __func__);
 460
 461         ret = spl_common_init(true);
 462         if (ret)
 463                 return ret;
 464         gd->flags |= GD_FLG_SPL_EARLY_INIT;
 465
 466         return 0;
 467 }
 468
 469 int spl_init(void)
 470 {
 471         int ret;
 472         bool setup_malloc = !(IS_ENABLED(CONFIG_SPL_STACK_R) &&
 473                         IS_ENABLED(CONFIG_SPL_SYS_MALLOC_SIMPLE));
 474
 475         debug("%s\n", __func__);
 476
 477         if (!(gd->flags & GD_FLG_SPL_EARLY_INIT)) {
 478                 ret = spl_common_init(setup_malloc);
 479                 if (ret)
 480                         return ret;
 481         }
 482         gd->flags |= GD_FLG_SPL_INIT;
 483
 484         return 0;
 485 }
 486
 487 #ifndef BOOT_DEVICE_NONE
 488 #define BOOT_DEVICE_NONE 0xdeadbeef
 489 #endif
 490
 491 __weak void board_boot_order(u32 *spl_boot_list)
 492 {
 493         spl_boot_list[0] = spl_boot_device();
 494 }
 495
 496 static struct spl_image_loader *spl_ll_find_loader(uint boot_device)
 497 {
 498         struct spl_image_loader *drv =
 499                 ll_entry_start(struct spl_image_loader, spl_image_loader);
 500         const int n_ents =
 501                 ll_entry_count(struct spl_image_loader, spl_image_loader);
 502         struct spl_image_loader *entry;
 503
 504         for (entry = drv; entry != drv + n_ents; entry++) {
 505                 if (boot_device == entry->boot_device)
 506                         return entry;
 507         }
 508
 509         /* Not found */
 510         return NULL;
 511 }
 512
 513 static int spl_load_image(struct spl_image_info *spl_image,
 514                           struct spl_image_loader *loader)
 515 {
 516         int ret;
 517         struct spl_boot_device bootdev;
 518
 519         bootdev.boot_device = loader->boot_device;
 520         bootdev.boot_device_name = NULL;
 521
 522         ret = loader->load_image(spl_image, &bootdev);
 523 #ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK
 524         if (!ret && spl_image->dcrc_length) {
 525                 /* check data crc */
 526                 ulong dcrc = crc32_wd(0, (unsigned char *)spl_image->dcrc_data,
 527                                       spl_image->dcrc_length, CHUNKSZ_CRC32);
 528                 if (dcrc != spl_image->dcrc) {
 529                         puts("SPL: Image data CRC check failed!\n");
 530                         ret = -EINVAL;
 531                 }
 532         }
 533 #endif
 534         return ret;
 535 }
 536
 537 /**
 538  * boot_from_devices() - Try loading a booting U-Boot from a list of devices
 539  *
 540  * @spl_image: Place to put the image details if successful
 541  * @spl_boot_list: List of boot devices to try
 542  * @count: Number of elements in spl_boot_list
 543  * @return 0 if OK, -ve on error
 544  */
 545 static int boot_from_devices(struct spl_image_info *spl_image,
 546                              u32 spl_boot_list[], int count)
 547 {
 548         int i;
 549
 550         for (i = 0; i < count && spl_boot_list[i] != BOOT_DEVICE_NONE; i++) {
 551                 struct spl_image_loader *loader;
 552
 553                 loader = spl_ll_find_loader(spl_boot_list[i]);
 554 #if defined(CONFIG_SPL_SERIAL_SUPPORT) && defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 555                 if (loader)
 556                         printf("Trying to boot from %s\n", loader->name);
 557                 else
 558                         puts(SPL_TPL_PROMPT "Unsupported Boot Device!\n");
 559 #endif
 560                 if (loader && !spl_load_image(spl_image, loader)) {
 561                         spl_image->boot_device = spl_boot_list[i];
 562                         return 0;
 563                 }
 564         }
 565
 566         return -ENODEV;
 567 }
 568
 569 void board_init_r(gd_t *dummy1, ulong dummy2)
 570 {
 571         u32 spl_boot_list[] = {
 572                 BOOT_DEVICE_NONE,
 573                 BOOT_DEVICE_NONE,
 574                 BOOT_DEVICE_NONE,
 575                 BOOT_DEVICE_NONE,
 576                 BOOT_DEVICE_NONE,
 577         };
 578         struct spl_image_info spl_image;
 579         int ret;
 580
 581         debug(">>" SPL_TPL_PROMPT "board_init_r()\n");
 582
 583         spl_set_bd();
 584
 585 #if defined(CONFIG_SYS_SPL_MALLOC_START)
 586         mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START,
 587                         CONFIG_SYS_SPL_MALLOC_SIZE);
 588         gd->flags |= GD_FLG_FULL_MALLOC_INIT;
 589 #endif
 590         if (!(gd->flags & GD_FLG_SPL_INIT)) {
 591                 if (spl_init())
 592                         hang();
 593         }
 594 #if !defined(CONFIG_PPC) && !defined(CONFIG_ARCH_MX6)
 595         /*
 596          * timer_init() does not exist on PPC systems. The timer is initialized
 597          * and enabled (decrementer) in interrupt_init() here.
 598          */
 599         timer_init();
 600 #endif
 601
 602 #if CONFIG_IS_ENABLED(BOARD_INIT)
 603         spl_board_init();
 604 #endif
 605
 606 #if defined(CONFIG_SPL_WATCHDOG_SUPPORT) && CONFIG_IS_ENABLED(WDT)
 607         initr_watchdog();
 608 #endif
 609
 610         if (IS_ENABLED(CONFIG_SPL_OS_BOOT) || CONFIG_IS_ENABLED(HANDOFF))
 611                 dram_init_banksize();
 612
 613         bootcount_inc();
 614
 615         memset(&spl_image, '\0', sizeof(spl_image));
 616 #ifdef CONFIG_SYS_SPL_ARGS_ADDR
 617         spl_image.arg = (void *)CONFIG_SYS_SPL_ARGS_ADDR;
 618 #endif
 619         spl_image.boot_device = BOOT_DEVICE_NONE;
 620         board_boot_order(spl_boot_list);
 621
 622         if (boot_from_devices(&spl_image, spl_boot_list,
 623                               ARRAY_SIZE(spl_boot_list))) {
 624                 puts(SPL_TPL_PROMPT "failed to boot from all boot devices\n");
 625                 hang();
 626         }
 627
 628         spl_perform_fixups(&spl_image);
 629         if (CONFIG_IS_ENABLED(HANDOFF)) {
 630                 ret = write_spl_handoff();
 631                 if (ret)
 632                         printf(SPL_TPL_PROMPT
 633                                "SPL hand-off write failed (err=%d)\n", ret);
 634         }
 635         if (CONFIG_IS_ENABLED(BLOBLIST)) {
 636                 ret = bloblist_finish();
 637                 if (ret)
 638                         printf("Warning: Failed to finish bloblist (ret=%d)\n",
 639                                ret);
 640         }
 641
 642 #ifdef CONFIG_CPU_V7M
 643         spl_image.entry_point |= 0x1;
 644 #endif
 645         switch (spl_image.os) {
 646         case IH_OS_U_BOOT:
 647                 debug("Jumping to U-Boot\n");
 648                 break;
 649 #if CONFIG_IS_ENABLED(ATF)
 650         case IH_OS_ARM_TRUSTED_FIRMWARE:
 651                 debug("Jumping to U-Boot via ARM Trusted Firmware\n");
 652                 spl_invoke_atf(&spl_image);
 653                 break;
 654 #endif
 655 #if CONFIG_IS_ENABLED(OPTEE)
 656         case IH_OS_TEE:
 657                 debug("Jumping to U-Boot via OP-TEE\n");
 658                 spl_optee_entry(NULL, NULL, spl_image.fdt_addr,
 659                                 (void *)spl_image.entry_point);
 660                 break;
 661 #endif
 662 #if CONFIG_IS_ENABLED(OPENSBI)
 663         case IH_OS_OPENSBI:
 664                 debug("Jumping to U-Boot via RISC-V OpenSBI\n");
 665                 spl_invoke_opensbi(&spl_image);
 666                 break;
 667 #endif
 668 #ifdef CONFIG_SPL_OS_BOOT
 669         case IH_OS_LINUX:
 670                 debug("Jumping to Linux\n");
 671                 spl_fixup_fdt();
 672                 spl_board_prepare_for_linux();
 673                 jump_to_image_linux(&spl_image);
 674 #endif
 675         default:
 676                 debug("Unsupported OS image.. Jumping nevertheless..\n");
 677         }
 678 #if CONFIG_VAL(SYS_MALLOC_F_LEN) && !defined(CONFIG_SYS_SPL_MALLOC_SIZE)
 679         debug("SPL malloc() used 0x%lx bytes (%ld KB)\n", gd->malloc_ptr,
 680               gd->malloc_ptr / 1024);
 681 #endif
 682 #ifdef CONFIG_BOOTSTAGE_STASH
 683         bootstage_mark_name(BOOTSTAGE_ID_END_SPL, "end_spl");
 684         ret = bootstage_stash((void *)CONFIG_BOOTSTAGE_STASH_ADDR,
 685                               CONFIG_BOOTSTAGE_STASH_SIZE);
 686         if (ret)
 687                 debug("Failed to stash bootstage: err=%d\n", ret);
 688 #endif
 689
 690         debug("loaded - jumping to U-Boot...\n");
 691         spl_board_prepare_for_boot();
 692         jump_to_image_no_args(&spl_image);
 693 }
 694
 695 #ifdef CONFIG_SPL_SERIAL_SUPPORT
 696 /*
 697  * This requires UART clocks to be enabled.  In order for this to work the
 698  * caller must ensure that the gd pointer is valid.
 699  */
 700 void preloader_console_init(void)
 701 {
 702         gd->baudrate = CONFIG_BAUDRATE;
 703
 704         serial_init();          /* serial communications setup */
 705
 706         gd->have_console = 1;
 707
 708 #if CONFIG_IS_ENABLED(BANNER_PRINT)
 709         puts("\nU-Boot " SPL_TPL_NAME " " PLAIN_VERSION " (" U_BOOT_DATE " - "
 710              U_BOOT_TIME " " U_BOOT_TZ ")\n");
 711 #endif
 712 #ifdef CONFIG_SPL_DISPLAY_PRINT
 713         spl_display_print();
 714 #endif
 715 }
 716 #endif
 717
 718 /**
 719  * This function is called before the stack is changed from initial stack to
 720  * relocated stack. It tries to dump the stack size used
 721  */
 722 __weak void spl_relocate_stack_check(void)
 723 {
 724 #if CONFIG_IS_ENABLED(SYS_REPORT_STACK_F_USAGE)
 725         ulong init_sp = gd->start_addr_sp;
 726         ulong stack_bottom = init_sp - CONFIG_VAL(SIZE_LIMIT_PROVIDE_STACK);
 727         u8 *ptr = (u8 *)stack_bottom;
 728         ulong i;
 729
 730         for (i = 0; i < CONFIG_VAL(SIZE_LIMIT_PROVIDE_STACK); i++) {
 731                 if (*ptr != CONFIG_VAL(SYS_STACK_F_CHECK_BYTE))
 732                         break;
 733                 ptr++;
 734         }
 735         printf("SPL initial stack usage: %lu bytes\n",
 736                CONFIG_VAL(SIZE_LIMIT_PROVIDE_STACK) - i);
 737 #endif
 738 }
 739
 740 /**
 741  * spl_relocate_stack_gd() - Relocate stack ready for board_init_r() execution
 742  *
 743  * Sometimes board_init_f() runs with a stack in SRAM but we want to use SDRAM
 744  * for the main board_init_r() execution. This is typically because we need
 745  * more stack space for things like the MMC sub-system.
 746  *
 747  * This function calculates the stack position, copies the global_data into
 748  * place, sets the new gd (except for ARM, for which setting GD within a C
 749  * function may not always work) and returns the new stack position. The
 750  * caller is responsible for setting up the sp register and, in the case
 751  * of ARM, setting up gd.
 752  *
 753  * All of this is done using the same layout and alignments as done in
 754  * board_init_f_init_reserve() / board_init_f_alloc_reserve().
 755  *
 756  * @return new stack location, or 0 to use the same stack
 757  */
 758 ulong spl_relocate_stack_gd(void)
 759 {
 760 #ifdef CONFIG_SPL_STACK_R
 761         gd_t *new_gd;
 762         ulong ptr = CONFIG_SPL_STACK_R_ADDR;
 763
 764         if (CONFIG_IS_ENABLED(SYS_REPORT_STACK_F_USAGE))
 765                 spl_relocate_stack_check();
 766
 767 #if defined(CONFIG_SPL_SYS_MALLOC_SIMPLE) && CONFIG_VAL(SYS_MALLOC_F_LEN)
 768         if (CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN) {
 769                 debug("SPL malloc() before relocation used 0x%lx bytes (%ld KB)\n",
 770                       gd->malloc_ptr, gd->malloc_ptr / 1024);
 771                 ptr -= CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN;
 772                 gd->malloc_base = ptr;
 773                 gd->malloc_limit = CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN;
 774                 gd->malloc_ptr = 0;
 775         }
 776 #endif
 777         /* Get stack position: use 8-byte alignment for ABI compliance */
 778         ptr = CONFIG_SPL_STACK_R_ADDR - roundup(sizeof(gd_t),16);
 779         new_gd = (gd_t *)ptr;
 780         memcpy(new_gd, (void *)gd, sizeof(gd_t));
 781 #if CONFIG_IS_ENABLED(DM)
 782         dm_fixup_for_gd_move(new_gd);
 783 #endif
 784 #if !defined(CONFIG_ARM)
 785         gd = new_gd;
 786 #endif
 787         return ptr;
 788 #else
 789         return 0;
 790 #endif
 791 }