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 <mapmem.h>
  22 #include <dm/root.h>
  23 #include <linux/compiler.h>
  24 #include <fdt_support.h>
  25 #include <bootcount.h>
  26 #include <wdt.h>
  27
  28 DECLARE_GLOBAL_DATA_PTR;
  29
  30 #ifndef CONFIG_SYS_UBOOT_START
  31 #define CONFIG_SYS_UBOOT_START  CONFIG_SYS_TEXT_BASE
  32 #endif
  33 #ifndef CONFIG_SYS_MONITOR_LEN
  34 /* Unknown U-Boot size, let's assume it will not be more than 200 KB */
  35 #define CONFIG_SYS_MONITOR_LEN  (200 * 1024)
  36 #endif
  37
  38 u32 *boot_params_ptr = NULL;
  39
  40 /* See spl.h for information about this */
  41 binman_sym_declare(ulong, u_boot_any, image_pos);
  42
  43 /* Define board data structure */
  44 static bd_t bdata __attribute__ ((section(".data")));
  45
  46 /*
  47  * Board-specific Platform code can reimplement show_boot_progress () if needed
  48  */
  49 __weak void show_boot_progress(int val) {}
  50
  51 #if defined(CONFIG_SPL_OS_BOOT) || CONFIG_IS_ENABLED(HANDOFF)
  52 /* weak, default platform-specific function to initialize dram banks */
  53 __weak int dram_init_banksize(void)
  54 {
  55         return 0;
  56 }
  57 #endif
  58
  59 /*
  60  * Default function to determine if u-boot or the OS should
  61  * be started. This implementation always returns 1.
  62  *
  63  * Please implement your own board specific funcion to do this.
  64  *
  65  * RETURN
  66  * 0 to not start u-boot
  67  * positive if u-boot should start
  68  */
  69 #ifdef CONFIG_SPL_OS_BOOT
  70 __weak int spl_start_uboot(void)
  71 {
  72         puts(SPL_TPL_PROMPT
  73              "Please implement spl_start_uboot() for your board\n");
  74         puts(SPL_TPL_PROMPT "Direct Linux boot not active!\n");
  75         return 1;
  76 }
  77
  78 /*
  79  * Weak default function for arch specific zImage check. Return zero
  80  * and fill start and end address if image is recognized.
  81  */
  82 int __weak bootz_setup(ulong image, ulong *start, ulong *end)
  83 {
  84          return 1;
  85 }
  86 #endif
  87
  88 /* Weak default function for arch/board-specific fixups to the spl_image_info */
  89 void __weak spl_perform_fixups(struct spl_image_info *spl_image)
  90 {
  91 }
  92
  93 void spl_fixup_fdt(void)
  94 {
  95 #if defined(CONFIG_SPL_OF_LIBFDT) && defined(CONFIG_SYS_SPL_ARGS_ADDR)
  96         void *fdt_blob = (void *)CONFIG_SYS_SPL_ARGS_ADDR;
  97         int err;
  98
  99         err = fdt_check_header(fdt_blob);
 100         if (err < 0) {
 101                 printf("fdt_root: %s\n", fdt_strerror(err));
 102                 return;
 103         }
 104
 105         /* fixup the memory dt node */
 106         err = fdt_shrink_to_minimum(fdt_blob, 0);
 107         if (err == 0) {
 108                 printf(SPL_TPL_PROMPT "fdt_shrink_to_minimum err - %d\n", err);
 109                 return;
 110         }
 111
 112         err = arch_fixup_fdt(fdt_blob);
 113         if (err) {
 114                 printf(SPL_TPL_PROMPT "arch_fixup_fdt err - %d\n", err);
 115                 return;
 116         }
 117 #endif
 118 }
 119
 120 /*
 121  * Weak default function for board specific cleanup/preparation before
 122  * Linux boot. Some boards/platforms might not need it, so just provide
 123  * an empty stub here.
 124  */
 125 __weak void spl_board_prepare_for_linux(void)
 126 {
 127         /* Nothing to do! */
 128 }
 129
 130 __weak void spl_board_prepare_for_boot(void)
 131 {
 132         /* Nothing to do! */
 133 }
 134
 135 __weak struct image_header *spl_get_load_buffer(ssize_t offset, size_t size)
 136 {
 137         return (struct image_header *)(CONFIG_SYS_TEXT_BASE + offset);
 138 }
 139
 140 void spl_set_header_raw_uboot(struct spl_image_info *spl_image)
 141 {
 142         ulong u_boot_pos = binman_sym(ulong, u_boot_any, image_pos);
 143
 144         spl_image->size = CONFIG_SYS_MONITOR_LEN;
 145
 146         /*
 147          * Binman error cases: address of the end of the previous region or the
 148          * start of the image's entry area (usually 0) if there is no previous
 149          * region.
 150          */
 151         if (u_boot_pos && u_boot_pos != BINMAN_SYM_MISSING) {
 152                 /* Binman does not support separated entry addresses */
 153                 spl_image->entry_point = u_boot_pos;
 154                 spl_image->load_addr = u_boot_pos;
 155         } else {
 156                 spl_image->entry_point = CONFIG_SYS_UBOOT_START;
 157                 spl_image->load_addr = CONFIG_SYS_TEXT_BASE;
 158         }
 159         spl_image->os = IH_OS_U_BOOT;
 160         spl_image->name = "U-Boot";
 161 }
 162
 163 #ifdef CONFIG_SPL_LOAD_FIT_FULL
 164 /* Parse and load full fitImage in SPL */
 165 static int spl_load_fit_image(struct spl_image_info *spl_image,
 166                               const struct image_header *header)
 167 {
 168         bootm_headers_t images;
 169         const char *fit_uname_config = NULL;
 170         const char *fit_uname_fdt = FIT_FDT_PROP;
 171         const char *uname;
 172         ulong fw_data = 0, dt_data = 0, img_data = 0;
 173         ulong fw_len = 0, dt_len = 0, img_len = 0;
 174         int idx, conf_noffset;
 175         int ret;
 176
 177 #ifdef CONFIG_SPL_FIT_SIGNATURE
 178         images.verify = 1;
 179 #endif
 180         ret = fit_image_load(&images, (ulong)header,
 181                              NULL, &fit_uname_config,
 182                              IH_ARCH_DEFAULT, IH_TYPE_STANDALONE, -1,
 183                              FIT_LOAD_REQUIRED, &fw_data, &fw_len);
 184         if (ret < 0)
 185                 return ret;
 186
 187         spl_image->size = fw_len;
 188         spl_image->entry_point = fw_data;
 189         spl_image->load_addr = fw_data;
 190         spl_image->os = IH_OS_U_BOOT;
 191         spl_image->name = "U-Boot";
 192
 193         debug(SPL_TPL_PROMPT "payload image: %32s load addr: 0x%lx size: %d\n",
 194               spl_image->name, spl_image->load_addr, spl_image->size);
 195
 196 #ifdef CONFIG_SPL_FIT_SIGNATURE
 197         images.verify = 1;
 198 #endif
 199         ret = fit_image_load(&images, (ulong)header,
 200                        &fit_uname_fdt, &fit_uname_config,
 201                        IH_ARCH_DEFAULT, IH_TYPE_FLATDT, -1,
 202                        FIT_LOAD_OPTIONAL, &dt_data, &dt_len);
 203         if (ret >= 0)
 204                 spl_image->fdt_addr = (void *)dt_data;
 205
 206         conf_noffset = fit_conf_get_node((const void *)header,
 207                                          fit_uname_config);
 208         if (conf_noffset <= 0)
 209                 return 0;
 210
 211         for (idx = 0;
 212              uname = fdt_stringlist_get((const void *)header, conf_noffset,
 213                                         FIT_LOADABLE_PROP, idx,
 214                                 NULL), uname;
 215              idx++)
 216         {
 217 #ifdef CONFIG_SPL_FIT_SIGNATURE
 218                 images.verify = 1;
 219 #endif
 220                 ret = fit_image_load(&images, (ulong)header,
 221                                      &uname, &fit_uname_config,
 222                                      IH_ARCH_DEFAULT, IH_TYPE_LOADABLE, -1,
 223                                      FIT_LOAD_OPTIONAL_NON_ZERO,
 224                                      &img_data, &img_len);
 225                 if (ret < 0)
 226                         return ret;
 227         }
 228
 229         return 0;
 230 }
 231 #endif
 232
 233 int spl_parse_image_header(struct spl_image_info *spl_image,
 234                            const struct image_header *header)
 235 {
 236 #ifdef CONFIG_SPL_LOAD_FIT_FULL
 237         int ret = spl_load_fit_image(spl_image, header);
 238
 239         if (!ret)
 240                 return ret;
 241 #endif
 242         if (image_get_magic(header) == IH_MAGIC) {
 243 #ifdef CONFIG_SPL_LEGACY_IMAGE_SUPPORT
 244                 u32 header_size = sizeof(struct image_header);
 245
 246 #ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK
 247                 /* check uImage header CRC */
 248                 if (!image_check_hcrc(header)) {
 249                         puts("SPL: Image header CRC check failed!\n");
 250                         return -EINVAL;
 251                 }
 252 #endif
 253
 254                 if (spl_image->flags & SPL_COPY_PAYLOAD_ONLY) {
 255                         /*
 256                          * On some system (e.g. powerpc), the load-address and
 257                          * entry-point is located at address 0. We can't load
 258                          * to 0-0x40. So skip header in this case.
 259                          */
 260                         spl_image->load_addr = image_get_load(header);
 261                         spl_image->entry_point = image_get_ep(header);
 262                         spl_image->size = image_get_data_size(header);
 263                 } else {
 264                         spl_image->entry_point = image_get_load(header);
 265                         /* Load including the header */
 266                         spl_image->load_addr = spl_image->entry_point -
 267                                 header_size;
 268                         spl_image->size = image_get_data_size(header) +
 269                                 header_size;
 270                 }
 271 #ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK
 272                 /* store uImage data length and CRC to check later */
 273                 spl_image->dcrc_data = image_get_load(header);
 274                 spl_image->dcrc_length = image_get_data_size(header);
 275                 spl_image->dcrc = image_get_dcrc(header);
 276 #endif
 277
 278                 spl_image->os = image_get_os(header);
 279                 spl_image->name = image_get_name(header);
 280                 debug(SPL_TPL_PROMPT
 281                       "payload image: %32s load addr: 0x%lx size: %d\n",
 282                       spl_image->name, spl_image->load_addr, spl_image->size);
 283 #else
 284                 /* LEGACY image not supported */
 285                 debug("Legacy boot image support not enabled, proceeding to other boot methods\n");
 286                 return -EINVAL;
 287 #endif
 288         } else {
 289 #ifdef CONFIG_SPL_PANIC_ON_RAW_IMAGE
 290                 /*
 291                  * CONFIG_SPL_PANIC_ON_RAW_IMAGE is defined when the
 292                  * code which loads images in SPL cannot guarantee that
 293                  * absolutely all read errors will be reported.
 294                  * An example is the LPC32XX MLC NAND driver, which
 295                  * will consider that a completely unreadable NAND block
 296                  * is bad, and thus should be skipped silently.
 297                  */
 298                 panic("** no mkimage signature but raw image not supported");
 299 #endif
 300
 301 #ifdef CONFIG_SPL_OS_BOOT
 302                 ulong start, end;
 303
 304                 if (!bootz_setup((ulong)header, &start, &end)) {
 305                         spl_image->name = "Linux";
 306                         spl_image->os = IH_OS_LINUX;
 307                         spl_image->load_addr = CONFIG_SYS_LOAD_ADDR;
 308                         spl_image->entry_point = CONFIG_SYS_LOAD_ADDR;
 309                         spl_image->size = end - start;
 310                         debug(SPL_TPL_PROMPT
 311                               "payload zImage, load addr: 0x%lx size: %d\n",
 312                               spl_image->load_addr, spl_image->size);
 313                         return 0;
 314                 }
 315 #endif
 316
 317 #ifdef CONFIG_SPL_RAW_IMAGE_SUPPORT
 318                 /* Signature not found - assume u-boot.bin */
 319                 debug("mkimage signature not found - ih_magic = %x\n",
 320                         header->ih_magic);
 321                 spl_set_header_raw_uboot(spl_image);
 322 #else
 323                 /* RAW image not supported, proceed to other boot methods. */
 324                 debug("Raw boot image support not enabled, proceeding to other boot methods\n");
 325                 return -EINVAL;
 326 #endif
 327         }
 328
 329         return 0;
 330 }
 331
 332 __weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
 333 {
 334         typedef void __noreturn (*image_entry_noargs_t)(void);
 335
 336         image_entry_noargs_t image_entry =
 337                 (image_entry_noargs_t)spl_image->entry_point;
 338
 339         debug("image entry point: 0x%lx\n", spl_image->entry_point);
 340         image_entry();
 341 }
 342
 343 #if CONFIG_IS_ENABLED(HANDOFF)
 344 /**
 345  * Set up the SPL hand-off information
 346  *
 347  * This is initially empty (zero) but can be written by
 348  */
 349 static int setup_spl_handoff(void)
 350 {
 351         struct spl_handoff *ho;
 352
 353         ho = bloblist_ensure(BLOBLISTT_SPL_HANDOFF, sizeof(struct spl_handoff));
 354         if (!ho)
 355                 return -ENOENT;
 356
 357         return 0;
 358 }
 359
 360 __weak int handoff_arch_save(struct spl_handoff *ho)
 361 {
 362         return 0;
 363 }
 364
 365 static int write_spl_handoff(void)
 366 {
 367         struct spl_handoff *ho;
 368         int ret;
 369
 370         ho = bloblist_find(BLOBLISTT_SPL_HANDOFF, sizeof(struct spl_handoff));
 371         if (!ho)
 372                 return -ENOENT;
 373         handoff_save_dram(ho);
 374         ret = handoff_arch_save(ho);
 375         if (ret)
 376                 return ret;
 377         debug(SPL_TPL_PROMPT "Wrote SPL handoff\n");
 378
 379         return 0;
 380 }
 381 #else
 382 static inline int setup_spl_handoff(void) { return 0; }
 383 static inline int write_spl_handoff(void) { return 0; }
 384
 385 #endif /* HANDOFF */
 386
 387 static int spl_common_init(bool setup_malloc)
 388 {
 389         int ret;
 390
 391 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
 392         if (setup_malloc) {
 393 #ifdef CONFIG_MALLOC_F_ADDR
 394                 gd->malloc_base = CONFIG_MALLOC_F_ADDR;
 395 #endif
 396                 gd->malloc_limit = CONFIG_VAL(SYS_MALLOC_F_LEN);
 397                 gd->malloc_ptr = 0;
 398         }
 399 #endif
 400         ret = bootstage_init(u_boot_first_phase());
 401         if (ret) {
 402                 debug("%s: Failed to set up bootstage: ret=%d\n", __func__,
 403                       ret);
 404                 return ret;
 405         }
 406 #ifdef CONFIG_BOOTSTAGE_STASH
 407         if (!u_boot_first_phase()) {
 408                 const void *stash = map_sysmem(CONFIG_BOOTSTAGE_STASH_ADDR,
 409                                                CONFIG_BOOTSTAGE_STASH_SIZE);
 410
 411                 ret = bootstage_unstash(stash, CONFIG_BOOTSTAGE_STASH_SIZE);
 412                 if (ret)
 413                         debug("%s: Failed to unstash bootstage: ret=%d\n",
 414                               __func__, ret);
 415         }
 416 #endif /* CONFIG_BOOTSTAGE_STASH */
 417         bootstage_mark_name(spl_phase() == PHASE_TPL ? BOOTSTAGE_ID_START_TPL :
 418                             BOOTSTAGE_ID_START_SPL, SPL_TPL_NAME);
 419 #if CONFIG_IS_ENABLED(LOG)
 420         ret = log_init();
 421         if (ret) {
 422                 debug("%s: Failed to set up logging\n", __func__);
 423                 return ret;
 424         }
 425 #endif
 426         if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) {
 427                 ret = fdtdec_setup();
 428                 if (ret) {
 429                         debug("fdtdec_setup() returned error %d\n", ret);
 430                         return ret;
 431                 }
 432         }
 433         if (CONFIG_IS_ENABLED(DM)) {
 434                 bootstage_start(BOOTSTATE_ID_ACCUM_DM_SPL,
 435                                 spl_phase() == PHASE_TPL ? "dm tpl" : "dm_spl");
 436                 /* With CONFIG_SPL_OF_PLATDATA, bring in all devices */
 437                 ret = dm_init_and_scan(!CONFIG_IS_ENABLED(OF_PLATDATA));
 438                 bootstage_accum(BOOTSTATE_ID_ACCUM_DM_SPL);
 439                 if (ret) {
 440                         debug("dm_init_and_scan() returned error %d\n", ret);
 441                         return ret;
 442                 }
 443         }
 444
 445         return 0;
 446 }
 447
 448 void spl_set_bd(void)
 449 {
 450         /*
 451          * NOTE: On some platforms (e.g. x86) bdata may be in flash and not
 452          * writeable.
 453          */
 454         if (!gd->bd)
 455                 gd->bd = &bdata;
 456 }
 457
 458 int spl_early_init(void)
 459 {
 460         int ret;
 461
 462         debug("%s\n", __func__);
 463
 464         ret = spl_common_init(true);
 465         if (ret)
 466                 return ret;
 467         gd->flags |= GD_FLG_SPL_EARLY_INIT;
 468
 469         return 0;
 470 }
 471
 472 int spl_init(void)
 473 {
 474         int ret;
 475         bool setup_malloc = !(IS_ENABLED(CONFIG_SPL_STACK_R) &&
 476                         IS_ENABLED(CONFIG_SPL_SYS_MALLOC_SIMPLE));
 477
 478         debug("%s\n", __func__);
 479
 480         if (!(gd->flags & GD_FLG_SPL_EARLY_INIT)) {
 481                 ret = spl_common_init(setup_malloc);
 482                 if (ret)
 483                         return ret;
 484         }
 485         gd->flags |= GD_FLG_SPL_INIT;
 486
 487         return 0;
 488 }
 489
 490 #ifndef BOOT_DEVICE_NONE
 491 #define BOOT_DEVICE_NONE 0xdeadbeef
 492 #endif
 493
 494 __weak void board_boot_order(u32 *spl_boot_list)
 495 {
 496         spl_boot_list[0] = spl_boot_device();
 497 }
 498
 499 static struct spl_image_loader *spl_ll_find_loader(uint boot_device)
 500 {
 501         struct spl_image_loader *drv =
 502                 ll_entry_start(struct spl_image_loader, spl_image_loader);
 503         const int n_ents =
 504                 ll_entry_count(struct spl_image_loader, spl_image_loader);
 505         struct spl_image_loader *entry;
 506
 507         for (entry = drv; entry != drv + n_ents; entry++) {
 508                 if (boot_device == entry->boot_device)
 509                         return entry;
 510         }
 511
 512         /* Not found */
 513         return NULL;
 514 }
 515
 516 static int spl_load_image(struct spl_image_info *spl_image,
 517                           struct spl_image_loader *loader)
 518 {
 519         int ret;
 520         struct spl_boot_device bootdev;
 521
 522         bootdev.boot_device = loader->boot_device;
 523         bootdev.boot_device_name = NULL;
 524
 525         ret = loader->load_image(spl_image, &bootdev);
 526 #ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK
 527         if (!ret && spl_image->dcrc_length) {
 528                 /* check data crc */
 529                 ulong dcrc = crc32_wd(0, (unsigned char *)spl_image->dcrc_data,
 530                                       spl_image->dcrc_length, CHUNKSZ_CRC32);
 531                 if (dcrc != spl_image->dcrc) {
 532                         puts("SPL: Image data CRC check failed!\n");
 533                         ret = -EINVAL;
 534                 }
 535         }
 536 #endif
 537         return ret;
 538 }
 539
 540 /**
 541  * boot_from_devices() - Try loading a booting U-Boot from a list of devices
 542  *
 543  * @spl_image: Place to put the image details if successful
 544  * @spl_boot_list: List of boot devices to try
 545  * @count: Number of elements in spl_boot_list
 546  * @return 0 if OK, -ve on error
 547  */
 548 static int boot_from_devices(struct spl_image_info *spl_image,
 549                              u32 spl_boot_list[], int count)
 550 {
 551         int i;
 552
 553         for (i = 0; i < count && spl_boot_list[i] != BOOT_DEVICE_NONE; i++) {
 554                 struct spl_image_loader *loader;
 555
 556                 loader = spl_ll_find_loader(spl_boot_list[i]);
 557 #if defined(CONFIG_SPL_SERIAL_SUPPORT) && defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
 558                 if (loader)
 559                         printf("Trying to boot from %s\n", loader->name);
 560                 else
 561                         puts(SPL_TPL_PROMPT "Unsupported Boot Device!\n");
 562 #endif
 563                 if (loader && !spl_load_image(spl_image, loader)) {
 564                         spl_image->boot_device = spl_boot_list[i];
 565                         return 0;
 566                 }
 567         }
 568
 569         return -ENODEV;
 570 }
 571
 572 #if defined(CONFIG_SPL_FRAMEWORK_BOARD_INIT_F)
 573 void board_init_f(ulong dummy)
 574 {
 575         if (CONFIG_IS_ENABLED(OF_CONTROL)) {
 576                 int ret;
 577
 578                 ret = spl_early_init();
 579                 if (ret) {
 580                         debug("spl_early_init() failed: %d\n", ret);
 581                         hang();
 582                 }
 583         }
 584
 585         if (CONFIG_IS_ENABLED(SERIAL_SUPPORT))
 586                 preloader_console_init();
 587 }
 588 #endif
 589
 590 void board_init_r(gd_t *dummy1, ulong dummy2)
 591 {
 592         u32 spl_boot_list[] = {
 593                 BOOT_DEVICE_NONE,
 594                 BOOT_DEVICE_NONE,
 595                 BOOT_DEVICE_NONE,
 596                 BOOT_DEVICE_NONE,
 597                 BOOT_DEVICE_NONE,
 598         };
 599         struct spl_image_info spl_image;
 600         int ret;
 601
 602         debug(">>" SPL_TPL_PROMPT "board_init_r()\n");
 603
 604         spl_set_bd();
 605
 606 #if defined(CONFIG_SYS_SPL_MALLOC_START)
 607         mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START,
 608                         CONFIG_SYS_SPL_MALLOC_SIZE);
 609         gd->flags |= GD_FLG_FULL_MALLOC_INIT;
 610 #endif
 611         if (!(gd->flags & GD_FLG_SPL_INIT)) {
 612                 if (spl_init())
 613                         hang();
 614         }
 615 #if !defined(CONFIG_PPC) && !defined(CONFIG_ARCH_MX6)
 616         /*
 617          * timer_init() does not exist on PPC systems. The timer is initialized
 618          * and enabled (decrementer) in interrupt_init() here.
 619          */
 620         timer_init();
 621 #endif
 622         if (CONFIG_IS_ENABLED(BLOBLIST)) {
 623                 ret = bloblist_init();
 624                 if (ret) {
 625                         debug("%s: Failed to set up bloblist: ret=%d\n",
 626                               __func__, ret);
 627                         puts(SPL_TPL_PROMPT "Cannot set up bloblist\n");
 628                         hang();
 629                 }
 630         }
 631         if (CONFIG_IS_ENABLED(HANDOFF)) {
 632                 int ret;
 633
 634                 ret = setup_spl_handoff();
 635                 if (ret) {
 636                         puts(SPL_TPL_PROMPT "Cannot set up SPL handoff\n");
 637                         hang();
 638                 }
 639         }
 640
 641 #if CONFIG_IS_ENABLED(BOARD_INIT)
 642         spl_board_init();
 643 #endif
 644
 645 #if defined(CONFIG_SPL_WATCHDOG_SUPPORT) && CONFIG_IS_ENABLED(WDT)
 646         initr_watchdog();
 647 #endif
 648
 649         if (IS_ENABLED(CONFIG_SPL_OS_BOOT) || CONFIG_IS_ENABLED(HANDOFF))
 650                 dram_init_banksize();
 651
 652         bootcount_inc();
 653
 654         memset(&spl_image, '\0', sizeof(spl_image));
 655 #ifdef CONFIG_SYS_SPL_ARGS_ADDR
 656         spl_image.arg = (void *)CONFIG_SYS_SPL_ARGS_ADDR;
 657 #endif
 658         spl_image.boot_device = BOOT_DEVICE_NONE;
 659         board_boot_order(spl_boot_list);
 660
 661         if (boot_from_devices(&spl_image, spl_boot_list,
 662                               ARRAY_SIZE(spl_boot_list))) {
 663                 puts(SPL_TPL_PROMPT "failed to boot from all boot devices\n");
 664                 hang();
 665         }
 666
 667         spl_perform_fixups(&spl_image);
 668         if (CONFIG_IS_ENABLED(HANDOFF)) {
 669                 ret = write_spl_handoff();
 670                 if (ret)
 671                         printf(SPL_TPL_PROMPT
 672                                "SPL hand-off write failed (err=%d)\n", ret);
 673         }
 674         if (CONFIG_IS_ENABLED(BLOBLIST)) {
 675                 ret = bloblist_finish();
 676                 if (ret)
 677                         printf("Warning: Failed to finish bloblist (ret=%d)\n",
 678                                ret);
 679         }
 680
 681 #ifdef CONFIG_CPU_V7M
 682         spl_image.entry_point |= 0x1;
 683 #endif
 684         switch (spl_image.os) {
 685         case IH_OS_U_BOOT:
 686                 debug("Jumping to U-Boot\n");
 687                 break;
 688 #if CONFIG_IS_ENABLED(ATF)
 689         case IH_OS_ARM_TRUSTED_FIRMWARE:
 690                 debug("Jumping to U-Boot via ARM Trusted Firmware\n");
 691                 spl_invoke_atf(&spl_image);
 692                 break;
 693 #endif
 694 #if CONFIG_IS_ENABLED(OPTEE)
 695         case IH_OS_TEE:
 696                 debug("Jumping to U-Boot via OP-TEE\n");
 697                 spl_optee_entry(NULL, NULL, spl_image.fdt_addr,
 698                                 (void *)spl_image.entry_point);
 699                 break;
 700 #endif
 701 #if CONFIG_IS_ENABLED(OPENSBI)
 702         case IH_OS_OPENSBI:
 703                 debug("Jumping to U-Boot via RISC-V OpenSBI\n");
 704                 spl_invoke_opensbi(&spl_image);
 705                 break;
 706 #endif
 707 #ifdef CONFIG_SPL_OS_BOOT
 708         case IH_OS_LINUX:
 709                 debug("Jumping to Linux\n");
 710                 spl_fixup_fdt();
 711                 spl_board_prepare_for_linux();
 712                 jump_to_image_linux(&spl_image);
 713 #endif
 714         default:
 715                 debug("Unsupported OS image.. Jumping nevertheless..\n");
 716         }
 717 #if CONFIG_VAL(SYS_MALLOC_F_LEN) && !defined(CONFIG_SYS_SPL_MALLOC_SIZE)
 718         debug("SPL malloc() used 0x%lx bytes (%ld KB)\n", gd->malloc_ptr,
 719               gd->malloc_ptr / 1024);
 720 #endif
 721         bootstage_mark_name(spl_phase() == PHASE_TPL ? BOOTSTAGE_ID_END_TPL :
 722                             BOOTSTAGE_ID_END_SPL, "end " SPL_TPL_NAME);
 723 #ifdef CONFIG_BOOTSTAGE_STASH
 724         ret = bootstage_stash((void *)CONFIG_BOOTSTAGE_STASH_ADDR,
 725                               CONFIG_BOOTSTAGE_STASH_SIZE);
 726         if (ret)
 727                 debug("Failed to stash bootstage: err=%d\n", ret);
 728 #endif
 729
 730         debug("loaded - jumping to U-Boot...\n");
 731         spl_board_prepare_for_boot();
 732         jump_to_image_no_args(&spl_image);
 733 }
 734
 735 #ifdef CONFIG_SPL_SERIAL_SUPPORT
 736 /*
 737  * This requires UART clocks to be enabled.  In order for this to work the
 738  * caller must ensure that the gd pointer is valid.
 739  */
 740 void preloader_console_init(void)
 741 {
 742         gd->baudrate = CONFIG_BAUDRATE;
 743
 744         serial_init();          /* serial communications setup */
 745
 746         gd->have_console = 1;
 747
 748 #if CONFIG_IS_ENABLED(BANNER_PRINT)
 749         puts("\nU-Boot " SPL_TPL_NAME " " PLAIN_VERSION " (" U_BOOT_DATE " - "
 750              U_BOOT_TIME " " U_BOOT_TZ ")\n");
 751 #endif
 752 #ifdef CONFIG_SPL_DISPLAY_PRINT
 753         spl_display_print();
 754 #endif
 755 }
 756 #endif
 757
 758 /**
 759  * This function is called before the stack is changed from initial stack to
 760  * relocated stack. It tries to dump the stack size used
 761  */
 762 __weak void spl_relocate_stack_check(void)
 763 {
 764 #if CONFIG_IS_ENABLED(SYS_REPORT_STACK_F_USAGE)
 765         ulong init_sp = gd->start_addr_sp;
 766         ulong stack_bottom = init_sp - CONFIG_VAL(SIZE_LIMIT_PROVIDE_STACK);
 767         u8 *ptr = (u8 *)stack_bottom;
 768         ulong i;
 769
 770         for (i = 0; i < CONFIG_VAL(SIZE_LIMIT_PROVIDE_STACK); i++) {
 771                 if (*ptr != CONFIG_VAL(SYS_STACK_F_CHECK_BYTE))
 772                         break;
 773                 ptr++;
 774         }
 775         printf("SPL initial stack usage: %lu bytes\n",
 776                CONFIG_VAL(SIZE_LIMIT_PROVIDE_STACK) - i);
 777 #endif
 778 }
 779
 780 /**
 781  * spl_relocate_stack_gd() - Relocate stack ready for board_init_r() execution
 782  *
 783  * Sometimes board_init_f() runs with a stack in SRAM but we want to use SDRAM
 784  * for the main board_init_r() execution. This is typically because we need
 785  * more stack space for things like the MMC sub-system.
 786  *
 787  * This function calculates the stack position, copies the global_data into
 788  * place, sets the new gd (except for ARM, for which setting GD within a C
 789  * function may not always work) and returns the new stack position. The
 790  * caller is responsible for setting up the sp register and, in the case
 791  * of ARM, setting up gd.
 792  *
 793  * All of this is done using the same layout and alignments as done in
 794  * board_init_f_init_reserve() / board_init_f_alloc_reserve().
 795  *
 796  * @return new stack location, or 0 to use the same stack
 797  */
 798 ulong spl_relocate_stack_gd(void)
 799 {
 800 #ifdef CONFIG_SPL_STACK_R
 801         gd_t *new_gd;
 802         ulong ptr = CONFIG_SPL_STACK_R_ADDR;
 803
 804         if (CONFIG_IS_ENABLED(SYS_REPORT_STACK_F_USAGE))
 805                 spl_relocate_stack_check();
 806
 807 #if defined(CONFIG_SPL_SYS_MALLOC_SIMPLE) && CONFIG_VAL(SYS_MALLOC_F_LEN)
 808         if (CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN) {
 809                 debug("SPL malloc() before relocation used 0x%lx bytes (%ld KB)\n",
 810                       gd->malloc_ptr, gd->malloc_ptr / 1024);
 811                 ptr -= CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN;
 812                 gd->malloc_base = ptr;
 813                 gd->malloc_limit = CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN;
 814                 gd->malloc_ptr = 0;
 815         }
 816 #endif
 817         /* Get stack position: use 8-byte alignment for ABI compliance */
 818         ptr = CONFIG_SPL_STACK_R_ADDR - roundup(sizeof(gd_t),16);
 819         new_gd = (gd_t *)ptr;
 820         memcpy(new_gd, (void *)gd, sizeof(gd_t));
 821 #if CONFIG_IS_ENABLED(DM)
 822         dm_fixup_for_gd_move(new_gd);
 823 #endif
 824 #if !defined(CONFIG_ARM) && !defined(CONFIG_RISCV)
 825         gd = new_gd;
 826 #endif
 827         return ptr;
 828 #else
 829         return 0;
 830 #endif
 831 }