boot/bootm_os.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2000-2009
   4  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   5  */
   6
   7 #include <common.h>
   8 #include <bootm.h>
   9 #include <bootstage.h>
  10 #include <cpu_func.h>
  11 #include <efi_loader.h>
  12 #include <env.h>
  13 #include <fdt_support.h>
  14 #include <image.h>
  15 #include <lmb.h>
  16 #include <log.h>
  17 #include <asm/global_data.h>
  18 #include <linux/libfdt.h>
  19 #include <malloc.h>
  20 #include <mapmem.h>
  21 #include <vxworks.h>
  22 #include <tee/optee.h>
  23
  24 DECLARE_GLOBAL_DATA_PTR;
  25
  26 static int do_bootm_standalone(int flag, int argc, char *const argv[],
  27                                bootm_headers_t *images)
  28 {
  29         char *s;
  30         int (*appl)(int, char *const[]);
  31
  32         /* Don't start if "autostart" is set to "no" */
  33         s = env_get("autostart");
  34         if ((s != NULL) && !strcmp(s, "no")) {
  35                 env_set_hex("filesize", images->os.image_len);
  36                 return 0;
  37         }
  38         appl = (int (*)(int, char * const []))images->ep;
  39         appl(argc, argv);
  40         return 0;
  41 }
  42
  43 /*******************************************************************/
  44 /* OS booting routines */
  45 /*******************************************************************/
  46
  47 #if defined(CONFIG_BOOTM_NETBSD) || defined(CONFIG_BOOTM_PLAN9)
  48 static void copy_args(char *dest, int argc, char *const argv[], char delim)
  49 {
  50         int i;
  51
  52         for (i = 0; i < argc; i++) {
  53                 if (i > 0)
  54                         *dest++ = delim;
  55                 strcpy(dest, argv[i]);
  56                 dest += strlen(argv[i]);
  57         }
  58 }
  59 #endif
  60
  61 static void __maybe_unused fit_unsupported_reset(const char *msg)
  62 {
  63         if (CONFIG_IS_ENABLED(FIT_VERBOSE)) {
  64                 printf("! FIT images not supported for '%s' - must reset board to recover!\n",
  65                        msg);
  66         }
  67 }
  68
  69 #ifdef CONFIG_BOOTM_NETBSD
  70 static int do_bootm_netbsd(int flag, int argc, char *const argv[],
  71                            bootm_headers_t *images)
  72 {
  73         void (*loader)(struct bd_info *, image_header_t *, char *, char *);
  74         image_header_t *os_hdr, *hdr;
  75         ulong kernel_data, kernel_len;
  76         char *cmdline;
  77
  78         if (flag != BOOTM_STATE_OS_GO)
  79                 return 0;
  80
  81 #if defined(CONFIG_FIT)
  82         if (!images->legacy_hdr_valid) {
  83                 fit_unsupported_reset("NetBSD");
  84                 return 1;
  85         }
  86 #endif
  87         hdr = images->legacy_hdr_os;
  88
  89         /*
  90          * Booting a (NetBSD) kernel image
  91          *
  92          * This process is pretty similar to a standalone application:
  93          * The (first part of an multi-) image must be a stage-2 loader,
  94          * which in turn is responsible for loading & invoking the actual
  95          * kernel.  The only differences are the parameters being passed:
  96          * besides the board info strucure, the loader expects a command
  97          * line, the name of the console device, and (optionally) the
  98          * address of the original image header.
  99          */
 100         os_hdr = NULL;
 101         if (image_check_type(&images->legacy_hdr_os_copy, IH_TYPE_MULTI)) {
 102                 image_multi_getimg(hdr, 1, &kernel_data, &kernel_len);
 103                 if (kernel_len)
 104                         os_hdr = hdr;
 105         }
 106
 107         if (argc > 0) {
 108                 ulong len;
 109                 int   i;
 110
 111                 for (i = 0, len = 0; i < argc; i += 1)
 112                         len += strlen(argv[i]) + 1;
 113                 cmdline = malloc(len);
 114                 copy_args(cmdline, argc, argv, ' ');
 115         } else {
 116                 cmdline = env_get("bootargs");
 117                 if (cmdline == NULL)
 118                         cmdline = "";
 119         }
 120
 121         loader = (void (*)(struct bd_info *, image_header_t *, char *, char *))images->ep;
 122
 123         printf("## Transferring control to NetBSD stage-2 loader (at address %08lx) ...\n",
 124                (ulong)loader);
 125
 126         bootstage_mark(BOOTSTAGE_ID_RUN_OS);
 127
 128         /*
 129          * NetBSD Stage-2 Loader Parameters:
 130          *   arg[0]: pointer to board info data
 131          *   arg[1]: image load address
 132          *   arg[2]: char pointer to the console device to use
 133          *   arg[3]: char pointer to the boot arguments
 134          */
 135         (*loader)(gd->bd, os_hdr, "", cmdline);
 136
 137         return 1;
 138 }
 139 #endif /* CONFIG_BOOTM_NETBSD*/
 140
 141 #ifdef CONFIG_LYNXKDI
 142 static int do_bootm_lynxkdi(int flag, int argc, char *const argv[],
 143                             bootm_headers_t *images)
 144 {
 145         image_header_t *hdr = &images->legacy_hdr_os_copy;
 146
 147         if (flag != BOOTM_STATE_OS_GO)
 148                 return 0;
 149
 150 #if defined(CONFIG_FIT)
 151         if (!images->legacy_hdr_valid) {
 152                 fit_unsupported_reset("Lynx");
 153                 return 1;
 154         }
 155 #endif
 156
 157         lynxkdi_boot((image_header_t *)hdr);
 158
 159         return 1;
 160 }
 161 #endif /* CONFIG_LYNXKDI */
 162
 163 #ifdef CONFIG_BOOTM_RTEMS
 164 static int do_bootm_rtems(int flag, int argc, char *const argv[],
 165                           bootm_headers_t *images)
 166 {
 167         void (*entry_point)(struct bd_info *);
 168
 169         if (flag != BOOTM_STATE_OS_GO)
 170                 return 0;
 171
 172 #if defined(CONFIG_FIT)
 173         if (!images->legacy_hdr_valid) {
 174                 fit_unsupported_reset("RTEMS");
 175                 return 1;
 176         }
 177 #endif
 178
 179         entry_point = (void (*)(struct bd_info *))images->ep;
 180
 181         printf("## Transferring control to RTEMS (at address %08lx) ...\n",
 182                (ulong)entry_point);
 183
 184         bootstage_mark(BOOTSTAGE_ID_RUN_OS);
 185
 186         /*
 187          * RTEMS Parameters:
 188          *   r3: ptr to board info data
 189          */
 190         (*entry_point)(gd->bd);
 191
 192         return 1;
 193 }
 194 #endif /* CONFIG_BOOTM_RTEMS */
 195
 196 #if defined(CONFIG_BOOTM_OSE)
 197 static int do_bootm_ose(int flag, int argc, char *const argv[],
 198                         bootm_headers_t *images)
 199 {
 200         void (*entry_point)(void);
 201
 202         if (flag != BOOTM_STATE_OS_GO)
 203                 return 0;
 204
 205 #if defined(CONFIG_FIT)
 206         if (!images->legacy_hdr_valid) {
 207                 fit_unsupported_reset("OSE");
 208                 return 1;
 209         }
 210 #endif
 211
 212         entry_point = (void (*)(void))images->ep;
 213
 214         printf("## Transferring control to OSE (at address %08lx) ...\n",
 215                (ulong)entry_point);
 216
 217         bootstage_mark(BOOTSTAGE_ID_RUN_OS);
 218
 219         /*
 220          * OSE Parameters:
 221          *   None
 222          */
 223         (*entry_point)();
 224
 225         return 1;
 226 }
 227 #endif /* CONFIG_BOOTM_OSE */
 228
 229 #if defined(CONFIG_BOOTM_PLAN9)
 230 static int do_bootm_plan9(int flag, int argc, char *const argv[],
 231                           bootm_headers_t *images)
 232 {
 233         void (*entry_point)(void);
 234         char *s;
 235
 236         if (flag != BOOTM_STATE_OS_GO)
 237                 return 0;
 238
 239 #if defined(CONFIG_FIT)
 240         if (!images->legacy_hdr_valid) {
 241                 fit_unsupported_reset("Plan 9");
 242                 return 1;
 243         }
 244 #endif
 245
 246         /* See README.plan9 */
 247         s = env_get("confaddr");
 248         if (s != NULL) {
 249                 char *confaddr = (char *)hextoul(s, NULL);
 250
 251                 if (argc > 0) {
 252                         copy_args(confaddr, argc, argv, '\n');
 253                 } else {
 254                         s = env_get("bootargs");
 255                         if (s != NULL)
 256                                 strcpy(confaddr, s);
 257                 }
 258         }
 259
 260         entry_point = (void (*)(void))images->ep;
 261
 262         printf("## Transferring control to Plan 9 (at address %08lx) ...\n",
 263                (ulong)entry_point);
 264
 265         bootstage_mark(BOOTSTAGE_ID_RUN_OS);
 266
 267         /*
 268          * Plan 9 Parameters:
 269          *   None
 270          */
 271         (*entry_point)();
 272
 273         return 1;
 274 }
 275 #endif /* CONFIG_BOOTM_PLAN9 */
 276
 277 #if defined(CONFIG_BOOTM_VXWORKS) && \
 278         (defined(CONFIG_PPC) || defined(CONFIG_ARM))
 279
 280 static void do_bootvx_fdt(bootm_headers_t *images)
 281 {
 282 #if defined(CONFIG_OF_LIBFDT)
 283         int ret;
 284         char *bootline;
 285         ulong of_size = images->ft_len;
 286         char **of_flat_tree = &images->ft_addr;
 287         struct lmb *lmb = &images->lmb;
 288
 289         if (*of_flat_tree) {
 290                 boot_fdt_add_mem_rsv_regions(lmb, *of_flat_tree);
 291
 292                 ret = boot_relocate_fdt(lmb, of_flat_tree, &of_size);
 293                 if (ret)
 294                         return;
 295
 296                 /* Update ethernet nodes */
 297                 fdt_fixup_ethernet(*of_flat_tree);
 298
 299                 ret = fdt_add_subnode(*of_flat_tree, 0, "chosen");
 300                 if ((ret >= 0 || ret == -FDT_ERR_EXISTS)) {
 301                         bootline = env_get("bootargs");
 302                         if (bootline) {
 303                                 ret = fdt_find_and_setprop(*of_flat_tree,
 304                                                 "/chosen", "bootargs",
 305                                                 bootline,
 306                                                 strlen(bootline) + 1, 1);
 307                                 if (ret < 0) {
 308                                         printf("## ERROR: %s : %s\n", __func__,
 309                                                fdt_strerror(ret));
 310                                         return;
 311                                 }
 312                         }
 313                 } else {
 314                         printf("## ERROR: %s : %s\n", __func__,
 315                                fdt_strerror(ret));
 316                         return;
 317                 }
 318         }
 319 #endif
 320
 321         boot_prep_vxworks(images);
 322
 323         bootstage_mark(BOOTSTAGE_ID_RUN_OS);
 324
 325 #if defined(CONFIG_OF_LIBFDT)
 326         printf("## Starting vxWorks at 0x%08lx, device tree at 0x%08lx ...\n",
 327                (ulong)images->ep, (ulong)*of_flat_tree);
 328 #else
 329         printf("## Starting vxWorks at 0x%08lx\n", (ulong)images->ep);
 330 #endif
 331
 332         boot_jump_vxworks(images);
 333
 334         puts("## vxWorks terminated\n");
 335 }
 336
 337 static int do_bootm_vxworks_legacy(int flag, int argc, char *const argv[],
 338                                    bootm_headers_t *images)
 339 {
 340         if (flag != BOOTM_STATE_OS_GO)
 341                 return 0;
 342
 343 #if defined(CONFIG_FIT)
 344         if (!images->legacy_hdr_valid) {
 345                 fit_unsupported_reset("VxWorks");
 346                 return 1;
 347         }
 348 #endif
 349
 350         do_bootvx_fdt(images);
 351
 352         return 1;
 353 }
 354
 355 int do_bootm_vxworks(int flag, int argc, char *const argv[],
 356                      bootm_headers_t *images)
 357 {
 358         char *bootargs;
 359         int pos;
 360         unsigned long vxflags;
 361         bool std_dtb = false;
 362
 363         /* get bootargs env */
 364         bootargs = env_get("bootargs");
 365
 366         if (bootargs != NULL) {
 367                 for (pos = 0; pos < strlen(bootargs); pos++) {
 368                         /* find f=0xnumber flag */
 369                         if ((bootargs[pos] == '=') && (pos >= 1) &&
 370                             (bootargs[pos - 1] == 'f')) {
 371                                 vxflags = hextoul(&bootargs[pos + 1], NULL);
 372                                 if (vxflags & VXWORKS_SYSFLG_STD_DTB)
 373                                         std_dtb = true;
 374                         }
 375                 }
 376         }
 377
 378         if (std_dtb) {
 379                 if (flag & BOOTM_STATE_OS_PREP)
 380                         printf("   Using standard DTB\n");
 381                 return do_bootm_linux(flag, argc, argv, images);
 382         } else {
 383                 if (flag & BOOTM_STATE_OS_PREP)
 384                         printf("   !!! WARNING !!! Using legacy DTB\n");
 385                 return do_bootm_vxworks_legacy(flag, argc, argv, images);
 386         }
 387 }
 388 #endif
 389
 390 #if defined(CONFIG_CMD_ELF)
 391 static int do_bootm_qnxelf(int flag, int argc, char *const argv[],
 392                            bootm_headers_t *images)
 393 {
 394         char *local_args[2];
 395         char str[16];
 396         int dcache;
 397
 398         if (flag != BOOTM_STATE_OS_GO)
 399                 return 0;
 400
 401 #if defined(CONFIG_FIT)
 402         if (!images->legacy_hdr_valid) {
 403                 fit_unsupported_reset("QNX");
 404                 return 1;
 405         }
 406 #endif
 407
 408         sprintf(str, "%lx", images->ep); /* write entry-point into string */
 409         local_args[0] = argv[0];
 410         local_args[1] = str;    /* and provide it via the arguments */
 411
 412         /*
 413          * QNX images require the data cache is disabled.
 414          */
 415         dcache = dcache_status();
 416         if (dcache)
 417                 dcache_disable();
 418
 419         do_bootelf(NULL, 0, 2, local_args);
 420
 421         if (dcache)
 422                 dcache_enable();
 423
 424         return 1;
 425 }
 426 #endif
 427
 428 #ifdef CONFIG_INTEGRITY
 429 static int do_bootm_integrity(int flag, int argc, char *const argv[],
 430                               bootm_headers_t *images)
 431 {
 432         void (*entry_point)(void);
 433
 434         if (flag != BOOTM_STATE_OS_GO)
 435                 return 0;
 436
 437 #if defined(CONFIG_FIT)
 438         if (!images->legacy_hdr_valid) {
 439                 fit_unsupported_reset("INTEGRITY");
 440                 return 1;
 441         }
 442 #endif
 443
 444         entry_point = (void (*)(void))images->ep;
 445
 446         printf("## Transferring control to INTEGRITY (at address %08lx) ...\n",
 447                (ulong)entry_point);
 448
 449         bootstage_mark(BOOTSTAGE_ID_RUN_OS);
 450
 451         /*
 452          * INTEGRITY Parameters:
 453          *   None
 454          */
 455         (*entry_point)();
 456
 457         return 1;
 458 }
 459 #endif
 460
 461 #ifdef CONFIG_BOOTM_OPENRTOS
 462 static int do_bootm_openrtos(int flag, int argc, char *const argv[],
 463                              bootm_headers_t *images)
 464 {
 465         void (*entry_point)(void);
 466
 467         if (flag != BOOTM_STATE_OS_GO)
 468                 return 0;
 469
 470         entry_point = (void (*)(void))images->ep;
 471
 472         printf("## Transferring control to OpenRTOS (at address %08lx) ...\n",
 473                 (ulong)entry_point);
 474
 475         bootstage_mark(BOOTSTAGE_ID_RUN_OS);
 476
 477         /*
 478          * OpenRTOS Parameters:
 479          *   None
 480          */
 481         (*entry_point)();
 482
 483         return 1;
 484 }
 485 #endif
 486
 487 #ifdef CONFIG_BOOTM_OPTEE
 488 static int do_bootm_tee(int flag, int argc, char *const argv[],
 489                         bootm_headers_t *images)
 490 {
 491         int ret;
 492
 493         /* Verify OS type */
 494         if (images->os.os != IH_OS_TEE) {
 495                 return 1;
 496         };
 497
 498         /* Validate OPTEE header */
 499         ret = optee_verify_bootm_image(images->os.image_start,
 500                                        images->os.load,
 501                                        images->os.image_len);
 502         if (ret)
 503                 return ret;
 504
 505         /* Locate FDT etc */
 506         ret = bootm_find_images(flag, argc, argv, 0, 0);
 507         if (ret)
 508                 return ret;
 509
 510         /* From here we can run the regular linux boot path */
 511         return do_bootm_linux(flag, argc, argv, images);
 512 }
 513 #endif
 514
 515 #ifdef CONFIG_BOOTM_EFI
 516 static int do_bootm_efi(int flag, int argc, char *const argv[],
 517                         bootm_headers_t *images)
 518 {
 519         int ret;
 520         efi_status_t efi_ret;
 521         void *image_buf;
 522
 523         if (flag != BOOTM_STATE_OS_GO)
 524                 return 0;
 525
 526         /* Locate FDT, if provided */
 527         ret = bootm_find_images(flag, argc, argv, 0, 0);
 528         if (ret)
 529                 return ret;
 530
 531         /* Initialize EFI drivers */
 532         efi_ret = efi_init_obj_list();
 533         if (efi_ret != EFI_SUCCESS) {
 534                 printf("## Failed to initialize UEFI sub-system: r = %lu\n",
 535                        efi_ret & ~EFI_ERROR_MASK);
 536                 return 1;
 537         }
 538
 539         /* Install device tree */
 540         efi_ret = efi_install_fdt(images->ft_len
 541                                   ? images->ft_addr : EFI_FDT_USE_INTERNAL);
 542         if (efi_ret != EFI_SUCCESS) {
 543                 printf("## Failed to install device tree: r = %lu\n",
 544                        efi_ret & ~EFI_ERROR_MASK);
 545                 return 1;
 546         }
 547
 548         /* Run EFI image */
 549         printf("## Transferring control to EFI (at address %08lx) ...\n",
 550                images->ep);
 551         bootstage_mark(BOOTSTAGE_ID_RUN_OS);
 552
 553         /* We expect to return */
 554         images->os.type = IH_TYPE_STANDALONE;
 555
 556         image_buf = map_sysmem(images->ep, images->os.image_len);
 557
 558         efi_ret = efi_run_image(image_buf, images->os.image_len);
 559         if (efi_ret != EFI_SUCCESS)
 560                 return 1;
 561         return 0;
 562 }
 563 #endif
 564
 565 static boot_os_fn *boot_os[] = {
 566         [IH_OS_U_BOOT] = do_bootm_standalone,
 567 #ifdef CONFIG_BOOTM_LINUX
 568         [IH_OS_LINUX] = do_bootm_linux,
 569 #endif
 570 #ifdef CONFIG_BOOTM_NETBSD
 571         [IH_OS_NETBSD] = do_bootm_netbsd,
 572 #endif
 573 #ifdef CONFIG_LYNXKDI
 574         [IH_OS_LYNXOS] = do_bootm_lynxkdi,
 575 #endif
 576 #ifdef CONFIG_BOOTM_RTEMS
 577         [IH_OS_RTEMS] = do_bootm_rtems,
 578 #endif
 579 #if defined(CONFIG_BOOTM_OSE)
 580         [IH_OS_OSE] = do_bootm_ose,
 581 #endif
 582 #if defined(CONFIG_BOOTM_PLAN9)
 583         [IH_OS_PLAN9] = do_bootm_plan9,
 584 #endif
 585 #if defined(CONFIG_BOOTM_VXWORKS) && \
 586         (defined(CONFIG_PPC) || defined(CONFIG_ARM) || defined(CONFIG_RISCV))
 587         [IH_OS_VXWORKS] = do_bootm_vxworks,
 588 #endif
 589 #if defined(CONFIG_CMD_ELF)
 590         [IH_OS_QNX] = do_bootm_qnxelf,
 591 #endif
 592 #ifdef CONFIG_INTEGRITY
 593         [IH_OS_INTEGRITY] = do_bootm_integrity,
 594 #endif
 595 #ifdef CONFIG_BOOTM_OPENRTOS
 596         [IH_OS_OPENRTOS] = do_bootm_openrtos,
 597 #endif
 598 #ifdef CONFIG_BOOTM_OPTEE
 599         [IH_OS_TEE] = do_bootm_tee,
 600 #endif
 601 #ifdef CONFIG_BOOTM_EFI
 602         [IH_OS_EFI] = do_bootm_efi,
 603 #endif
 604 };
 605
 606 /* Allow for arch specific config before we boot */
 607 __weak void arch_preboot_os(void)
 608 {
 609         /* please define platform specific arch_preboot_os() */
 610 }
 611
 612 /* Allow for board specific config before we boot */
 613 __weak void board_preboot_os(void)
 614 {
 615         /* please define board specific board_preboot_os() */
 616 }
 617
 618 int boot_selected_os(int argc, char *const argv[], int state,
 619                      bootm_headers_t *images, boot_os_fn *boot_fn)
 620 {
 621         arch_preboot_os();
 622         board_preboot_os();
 623         boot_fn(state, argc, argv, images);
 624
 625         /* Stand-alone may return when 'autostart' is 'no' */
 626         if (images->os.type == IH_TYPE_STANDALONE ||
 627             IS_ENABLED(CONFIG_SANDBOX) ||
 628             state == BOOTM_STATE_OS_FAKE_GO) /* We expect to return */
 629                 return 0;
 630         bootstage_error(BOOTSTAGE_ID_BOOT_OS_RETURNED);
 631         debug("\n## Control returned to monitor - resetting...\n");
 632
 633         return BOOTM_ERR_RESET;
 634 }
 635
 636 boot_os_fn *bootm_os_get_boot_func(int os)
 637 {
 638 #ifdef CONFIG_NEEDS_MANUAL_RELOC
 639         static bool relocated;
 640
 641         if (!relocated) {
 642                 int i;
 643
 644                 /* relocate boot function table */
 645                 for (i = 0; i < ARRAY_SIZE(boot_os); i++)
 646                         if (boot_os[i] != NULL)
 647                                 boot_os[i] += gd->reloc_off;
 648
 649                 relocated = true;
 650         }
 651 #endif
 652         return boot_os[os];
 653 }