arch/x86/lib/zimage.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 2011 The Chromium OS Authors.
   4  * (C) Copyright 2002
   5  * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
   6  */
   7
   8 /*
   9  * Linux x86 zImage and bzImage loading
  10  *
  11  * based on the procdure described in
  12  * linux/Documentation/i386/boot.txt
  13  */
  14
  15 #define LOG_CATEGORY    LOGC_BOOT
  16
  17 #include <common.h>
  18 #include <bootm.h>
  19 #include <command.h>
  20 #include <env.h>
  21 #include <init.h>
  22 #include <irq_func.h>
  23 #include <log.h>
  24 #include <malloc.h>
  25 #include <acpi/acpi_table.h>
  26 #include <asm/io.h>
  27 #include <asm/ptrace.h>
  28 #include <asm/zimage.h>
  29 #include <asm/byteorder.h>
  30 #include <asm/bootm.h>
  31 #include <asm/bootparam.h>
  32 #include <asm/global_data.h>
  33 #ifdef CONFIG_SYS_COREBOOT
  34 #include <asm/arch/timestamp.h>
  35 #endif
  36 #include <linux/compiler.h>
  37 #include <linux/ctype.h>
  38 #include <linux/libfdt.h>
  39
  40 DECLARE_GLOBAL_DATA_PTR;
  41
  42 /*
  43  * Memory lay-out:
  44  *
  45  * relative to setup_base (which is 0x90000 currently)
  46  *
  47  *      0x0000-0x7FFF   Real mode kernel
  48  *      0x8000-0x8FFF   Stack and heap
  49  *      0x9000-0x90FF   Kernel command line
  50  */
  51 #define DEFAULT_SETUP_BASE      0x90000
  52 #define COMMAND_LINE_OFFSET     0x9000
  53 #define HEAP_END_OFFSET         0x8e00
  54
  55 #define COMMAND_LINE_SIZE       2048
  56
  57 /**
  58  * struct zboot_state - Current state of the boot
  59  *
  60  * @bzimage_addr: Address of the bzImage to boot
  61  * @bzimage_size: Size of the bzImage, or 0 to detect this
  62  * @initrd_addr: Address of the initial ramdisk, or 0 if none
  63  * @initrd_size: Size of the initial ramdisk, or 0 if none
  64  * @load_address: Address where the bzImage is moved before booting, either
  65  *      BZIMAGE_LOAD_ADDR or ZIMAGE_LOAD_ADDR
  66  * @base_ptr: Pointer to the boot parameters, typically at address
  67  *      DEFAULT_SETUP_BASE
  68  * @cmdline: Environment variable containing the 'override' command line, or
  69  *      NULL to use the one in the setup block
  70  */
  71 struct zboot_state {
  72         ulong bzimage_addr;
  73         ulong bzimage_size;
  74         ulong initrd_addr;
  75         ulong initrd_size;
  76         ulong load_address;
  77         struct boot_params *base_ptr;
  78         char *cmdline;
  79 } state;
  80
  81 enum {
  82         ZBOOT_STATE_START       = BIT(0),
  83         ZBOOT_STATE_LOAD        = BIT(1),
  84         ZBOOT_STATE_SETUP       = BIT(2),
  85         ZBOOT_STATE_INFO        = BIT(3),
  86         ZBOOT_STATE_GO          = BIT(4),
  87
  88         /* This one doesn't execute automatically, so stop the count before 5 */
  89         ZBOOT_STATE_DUMP        = BIT(5),
  90         ZBOOT_STATE_COUNT       = 5,
  91 };
  92
  93 static void build_command_line(char *command_line, int auto_boot)
  94 {
  95         char *env_command_line;
  96
  97         command_line[0] = '\0';
  98
  99         env_command_line =  env_get("bootargs");
 100
 101         /* set console= argument if we use a serial console */
 102         if (!strstr(env_command_line, "console=")) {
 103                 if (!strcmp(env_get("stdout"), "serial")) {
 104
 105                         /* We seem to use serial console */
 106                         sprintf(command_line, "console=ttyS0,%s ",
 107                                 env_get("baudrate"));
 108                 }
 109         }
 110
 111         if (auto_boot)
 112                 strcat(command_line, "auto ");
 113
 114         if (env_command_line)
 115                 strcat(command_line, env_command_line);
 116 #ifdef DEBUG
 117         printf("Kernel command line:");
 118         puts(command_line);
 119         printf("\n");
 120 #endif
 121 }
 122
 123 static int kernel_magic_ok(struct setup_header *hdr)
 124 {
 125         if (KERNEL_MAGIC != hdr->boot_flag) {
 126                 printf("Error: Invalid Boot Flag "
 127                         "(found 0x%04x, expected 0x%04x)\n",
 128                         hdr->boot_flag, KERNEL_MAGIC);
 129                 return 0;
 130         } else {
 131                 printf("Valid Boot Flag\n");
 132                 return 1;
 133         }
 134 }
 135
 136 static int get_boot_protocol(struct setup_header *hdr, bool verbose)
 137 {
 138         if (hdr->header == KERNEL_V2_MAGIC) {
 139                 if (verbose)
 140                         printf("Magic signature found\n");
 141                 return hdr->version;
 142         } else {
 143                 /* Very old kernel */
 144                 if (verbose)
 145                         printf("Magic signature not found\n");
 146                 return 0x0100;
 147         }
 148 }
 149
 150 static int setup_device_tree(struct setup_header *hdr, const void *fdt_blob)
 151 {
 152         int bootproto = get_boot_protocol(hdr, false);
 153         struct setup_data *sd;
 154         int size;
 155
 156         if (bootproto < 0x0209)
 157                 return -ENOTSUPP;
 158
 159         if (!fdt_blob)
 160                 return 0;
 161
 162         size = fdt_totalsize(fdt_blob);
 163         if (size < 0)
 164                 return -EINVAL;
 165
 166         size += sizeof(struct setup_data);
 167         sd = (struct setup_data *)malloc(size);
 168         if (!sd) {
 169                 printf("Not enough memory for DTB setup data\n");
 170                 return -ENOMEM;
 171         }
 172
 173         sd->next = hdr->setup_data;
 174         sd->type = SETUP_DTB;
 175         sd->len = fdt_totalsize(fdt_blob);
 176         memcpy(sd->data, fdt_blob, sd->len);
 177         hdr->setup_data = (unsigned long)sd;
 178
 179         return 0;
 180 }
 181
 182 static const char *get_kernel_version(struct boot_params *params,
 183                                       void *kernel_base)
 184 {
 185         struct setup_header *hdr = &params->hdr;
 186         int bootproto;
 187         const char *s, *end;
 188
 189         bootproto = get_boot_protocol(hdr, false);
 190         if (bootproto < 0x0200 || hdr->setup_sects < 15)
 191                 return NULL;
 192
 193         /* sanity-check the kernel version in case it is missing */
 194         for (s = kernel_base + hdr->kernel_version + 0x200, end = s + 0x100; *s;
 195              s++) {
 196                 if (!isprint(*s))
 197                         return NULL;
 198         }
 199
 200         return kernel_base + hdr->kernel_version + 0x200;
 201 }
 202
 203 struct boot_params *load_zimage(char *image, unsigned long kernel_size,
 204                                 ulong *load_addressp)
 205 {
 206         struct boot_params *setup_base;
 207         const char *version;
 208         int setup_size;
 209         int bootproto;
 210         int big_image;
 211
 212         struct boot_params *params = (struct boot_params *)image;
 213         struct setup_header *hdr = &params->hdr;
 214
 215         /* base address for real-mode segment */
 216         setup_base = (struct boot_params *)DEFAULT_SETUP_BASE;
 217
 218         if (!kernel_magic_ok(hdr))
 219                 return 0;
 220
 221         /* determine size of setup */
 222         if (0 == hdr->setup_sects) {
 223                 log_warning("Setup Sectors = 0 (defaulting to 4)\n");
 224                 setup_size = 5 * 512;
 225         } else {
 226                 setup_size = (hdr->setup_sects + 1) * 512;
 227         }
 228
 229         log_debug("Setup Size = 0x%8.8lx\n", (ulong)setup_size);
 230
 231         if (setup_size > SETUP_MAX_SIZE)
 232                 printf("Error: Setup is too large (%d bytes)\n", setup_size);
 233
 234         /* determine boot protocol version */
 235         bootproto = get_boot_protocol(hdr, true);
 236
 237         log_debug("Using boot protocol version %x.%02x\n",
 238                   (bootproto & 0xff00) >> 8, bootproto & 0xff);
 239
 240         version = get_kernel_version(params, image);
 241         if (version)
 242                 printf("Linux kernel version %s\n", version);
 243         else
 244                 printf("Setup Sectors < 15 - Cannot print kernel version\n");
 245
 246         /* Determine image type */
 247         big_image = (bootproto >= 0x0200) &&
 248                     (hdr->loadflags & BIG_KERNEL_FLAG);
 249
 250         /* Determine load address */
 251         if (big_image)
 252                 *load_addressp = BZIMAGE_LOAD_ADDR;
 253         else
 254                 *load_addressp = ZIMAGE_LOAD_ADDR;
 255
 256         printf("Building boot_params at 0x%8.8lx\n", (ulong)setup_base);
 257         memset(setup_base, 0, sizeof(*setup_base));
 258         setup_base->hdr = params->hdr;
 259
 260         if (bootproto >= 0x0204)
 261                 kernel_size = hdr->syssize * 16;
 262         else
 263                 kernel_size -= setup_size;
 264
 265         if (bootproto == 0x0100) {
 266                 /*
 267                  * A very old kernel MUST have its real-mode code
 268                  * loaded at 0x90000
 269                  */
 270                 if ((ulong)setup_base != 0x90000) {
 271                         /* Copy the real-mode kernel */
 272                         memmove((void *)0x90000, setup_base, setup_size);
 273
 274                         /* Copy the command line */
 275                         memmove((void *)0x99000,
 276                                 (u8 *)setup_base + COMMAND_LINE_OFFSET,
 277                                 COMMAND_LINE_SIZE);
 278
 279                          /* Relocated */
 280                         setup_base = (struct boot_params *)0x90000;
 281                 }
 282
 283                 /* It is recommended to clear memory up to the 32K mark */
 284                 memset((u8 *)0x90000 + setup_size, 0,
 285                        SETUP_MAX_SIZE - setup_size);
 286         }
 287
 288         if (big_image) {
 289                 if (kernel_size > BZIMAGE_MAX_SIZE) {
 290                         printf("Error: bzImage kernel too big! "
 291                                 "(size: %ld, max: %d)\n",
 292                                 kernel_size, BZIMAGE_MAX_SIZE);
 293                         return 0;
 294                 }
 295         } else if ((kernel_size) > ZIMAGE_MAX_SIZE) {
 296                 printf("Error: zImage kernel too big! (size: %ld, max: %d)\n",
 297                        kernel_size, ZIMAGE_MAX_SIZE);
 298                 return 0;
 299         }
 300
 301         printf("Loading %s at address %lx (%ld bytes)\n",
 302                big_image ? "bzImage" : "zImage", *load_addressp, kernel_size);
 303
 304         memmove((void *)*load_addressp, image + setup_size, kernel_size);
 305
 306         return setup_base;
 307 }
 308
 309 int setup_zimage(struct boot_params *setup_base, char *cmd_line, int auto_boot,
 310                  ulong initrd_addr, ulong initrd_size, ulong cmdline_force)
 311 {
 312         struct setup_header *hdr = &setup_base->hdr;
 313         int bootproto = get_boot_protocol(hdr, false);
 314
 315         log_debug("Setup E820 entries\n");
 316         if (IS_ENABLED(CONFIG_COREBOOT_SYSINFO)) {
 317                 setup_base->e820_entries = cb_install_e820_map(
 318                         ARRAY_SIZE(setup_base->e820_map), setup_base->e820_map);
 319         } else {
 320                 setup_base->e820_entries = install_e820_map(
 321                         ARRAY_SIZE(setup_base->e820_map), setup_base->e820_map);
 322         }
 323
 324         if (bootproto == 0x0100) {
 325                 setup_base->screen_info.cl_magic = COMMAND_LINE_MAGIC;
 326                 setup_base->screen_info.cl_offset = COMMAND_LINE_OFFSET;
 327         }
 328         if (bootproto >= 0x0200) {
 329                 hdr->type_of_loader = 0x80;     /* U-Boot version 0 */
 330                 if (initrd_addr) {
 331                         printf("Initial RAM disk at linear address "
 332                                "0x%08lx, size %ld bytes\n",
 333                                initrd_addr, initrd_size);
 334
 335                         hdr->ramdisk_image = initrd_addr;
 336                         hdr->ramdisk_size = initrd_size;
 337                 }
 338         }
 339
 340         if (bootproto >= 0x0201) {
 341                 hdr->heap_end_ptr = HEAP_END_OFFSET;
 342                 hdr->loadflags |= HEAP_FLAG;
 343         }
 344
 345         if (cmd_line) {
 346                 int max_size = 0xff;
 347                 int ret;
 348
 349                 log_debug("Setup cmdline\n");
 350                 if (bootproto >= 0x0206)
 351                         max_size = hdr->cmdline_size;
 352                 if (bootproto >= 0x0202) {
 353                         hdr->cmd_line_ptr = (uintptr_t)cmd_line;
 354                 } else if (bootproto >= 0x0200) {
 355                         setup_base->screen_info.cl_magic = COMMAND_LINE_MAGIC;
 356                         setup_base->screen_info.cl_offset =
 357                                 (uintptr_t)cmd_line - (uintptr_t)setup_base;
 358
 359                         hdr->setup_move_size = 0x9100;
 360                 }
 361
 362                 /* build command line at COMMAND_LINE_OFFSET */
 363                 if (cmdline_force)
 364                         strcpy(cmd_line, (char *)cmdline_force);
 365                 else
 366                         build_command_line(cmd_line, auto_boot);
 367                 ret = bootm_process_cmdline(cmd_line, max_size, BOOTM_CL_ALL);
 368                 if (ret) {
 369                         printf("Cmdline setup failed (max_size=%x, bootproto=%x, err=%d)\n",
 370                                max_size, bootproto, ret);
 371                         return ret;
 372                 }
 373                 printf("Kernel command line: \"");
 374                 puts(cmd_line);
 375                 printf("\"\n");
 376         }
 377
 378         if (IS_ENABLED(CONFIG_INTEL_MID) && bootproto >= 0x0207)
 379                 hdr->hardware_subarch = X86_SUBARCH_INTEL_MID;
 380
 381         if (IS_ENABLED(CONFIG_GENERATE_ACPI_TABLE))
 382                 setup_base->acpi_rsdp_addr = acpi_get_rsdp_addr();
 383
 384         log_debug("Setup devicetree\n");
 385         setup_device_tree(hdr, (const void *)env_get_hex("fdtaddr", 0));
 386         setup_video(&setup_base->screen_info);
 387
 388         if (IS_ENABLED(CONFIG_EFI_STUB))
 389                 setup_efi_info(&setup_base->efi_info);
 390
 391         return 0;
 392 }
 393
 394 static int do_zboot_start(struct cmd_tbl *cmdtp, int flag, int argc,
 395                           char *const argv[])
 396 {
 397         const char *s;
 398
 399         memset(&state, '\0', sizeof(state));
 400         if (argc >= 2) {
 401                 /* argv[1] holds the address of the bzImage */
 402                 s = argv[1];
 403         } else {
 404                 s = env_get("fileaddr");
 405         }
 406
 407         if (s)
 408                 state.bzimage_addr = hextoul(s, NULL);
 409
 410         if (argc >= 3) {
 411                 /* argv[2] holds the size of the bzImage */
 412                 state.bzimage_size = hextoul(argv[2], NULL);
 413         }
 414
 415         if (argc >= 4)
 416                 state.initrd_addr = hextoul(argv[3], NULL);
 417         if (argc >= 5)
 418                 state.initrd_size = hextoul(argv[4], NULL);
 419         if (argc >= 6) {
 420                 /*
 421                  * When the base_ptr is passed in, we assume that the image is
 422                  * already loaded at the address given by argv[1] and therefore
 423                  * the original bzImage is somewhere else, or not accessible.
 424                  * In any case, we don't need access to the bzImage since all
 425                  * the processing is assumed to be done.
 426                  *
 427                  * So set the base_ptr to the given address, use this arg as the
 428                  * load address and set bzimage_addr to 0 so we know that it
 429                  * cannot be proceesed (or processed again).
 430                  */
 431                 state.base_ptr = (void *)hextoul(argv[5], NULL);
 432                 state.load_address = state.bzimage_addr;
 433                 state.bzimage_addr = 0;
 434         }
 435         if (argc >= 7)
 436                 state.cmdline = env_get(argv[6]);
 437
 438         return 0;
 439 }
 440
 441 static int do_zboot_load(struct cmd_tbl *cmdtp, int flag, int argc,
 442                          char *const argv[])
 443 {
 444         struct boot_params *base_ptr;
 445
 446         if (state.base_ptr) {
 447                 struct boot_params *from = (struct boot_params *)state.base_ptr;
 448
 449                 base_ptr = (struct boot_params *)DEFAULT_SETUP_BASE;
 450                 log_debug("Building boot_params at 0x%8.8lx\n",
 451                           (ulong)base_ptr);
 452                 memset(base_ptr, '\0', sizeof(*base_ptr));
 453                 base_ptr->hdr = from->hdr;
 454         } else {
 455                 base_ptr = load_zimage((void *)state.bzimage_addr, state.bzimage_size,
 456                                        &state.load_address);
 457                 if (!base_ptr) {
 458                         puts("## Kernel loading failed ...\n");
 459                         return CMD_RET_FAILURE;
 460                 }
 461         }
 462         state.base_ptr = base_ptr;
 463         if (env_set_hex("zbootbase", (ulong)base_ptr) ||
 464             env_set_hex("zbootaddr", state.load_address))
 465                 return CMD_RET_FAILURE;
 466
 467         return 0;
 468 }
 469
 470 static int do_zboot_setup(struct cmd_tbl *cmdtp, int flag, int argc,
 471                           char *const argv[])
 472 {
 473         struct boot_params *base_ptr = state.base_ptr;
 474         int ret;
 475
 476         if (!base_ptr) {
 477                 printf("base is not set: use 'zboot load' first\n");
 478                 return CMD_RET_FAILURE;
 479         }
 480         ret = setup_zimage(base_ptr, (char *)base_ptr + COMMAND_LINE_OFFSET,
 481                            0, state.initrd_addr, state.initrd_size,
 482                            (ulong)state.cmdline);
 483         if (ret) {
 484                 puts("Setting up boot parameters failed ...\n");
 485                 return CMD_RET_FAILURE;
 486         }
 487
 488         return 0;
 489 }
 490
 491 static int do_zboot_info(struct cmd_tbl *cmdtp, int flag, int argc,
 492                          char *const argv[])
 493 {
 494         printf("Kernel loaded at %08lx, setup_base=%p\n",
 495                state.load_address, state.base_ptr);
 496
 497         return 0;
 498 }
 499
 500 static int do_zboot_go(struct cmd_tbl *cmdtp, int flag, int argc,
 501                        char *const argv[])
 502 {
 503         int ret;
 504
 505         disable_interrupts();
 506
 507         /* we assume that the kernel is in place */
 508         ret = boot_linux_kernel((ulong)state.base_ptr, state.load_address,
 509                                 false);
 510         printf("Kernel returned! (err=%d)\n", ret);
 511
 512         return CMD_RET_FAILURE;
 513 }
 514
 515 static void print_num(const char *name, ulong value)
 516 {
 517         printf("%-20s: %lx\n", name, value);
 518 }
 519
 520 static void print_num64(const char *name, u64 value)
 521 {
 522         printf("%-20s: %llx\n", name, value);
 523 }
 524
 525 static const char *const e820_type_name[E820_COUNT] = {
 526         [E820_RAM] = "RAM",
 527         [E820_RESERVED] = "Reserved",
 528         [E820_ACPI] = "ACPI",
 529         [E820_NVS] = "ACPI NVS",
 530         [E820_UNUSABLE] = "Unusable",
 531 };
 532
 533 static const char *const bootloader_id[] = {
 534         "LILO",
 535         "Loadlin",
 536         "bootsect-loader",
 537         "Syslinux",
 538         "Etherboot/gPXE/iPXE",
 539         "ELILO",
 540         "undefined",
 541         "GRUB",
 542         "U-Boot",
 543         "Xen",
 544         "Gujin",
 545         "Qemu",
 546         "Arcturus Networks uCbootloader",
 547         "kexec-tools",
 548         "Extended",
 549         "Special",
 550         "Reserved",
 551         "Minimal Linux Bootloader",
 552         "OVMF UEFI virtualization stack",
 553 };
 554
 555 struct flag_info {
 556         uint bit;
 557         const char *name;
 558 };
 559
 560 static struct flag_info load_flags[] = {
 561         { LOADED_HIGH, "loaded-high" },
 562         { QUIET_FLAG, "quiet" },
 563         { KEEP_SEGMENTS, "keep-segments" },
 564         { CAN_USE_HEAP, "can-use-heap" },
 565 };
 566
 567 static struct flag_info xload_flags[] = {
 568         { XLF_KERNEL_64, "64-bit-entry" },
 569         { XLF_CAN_BE_LOADED_ABOVE_4G, "can-load-above-4gb" },
 570         { XLF_EFI_HANDOVER_32, "32-efi-handoff" },
 571         { XLF_EFI_HANDOVER_64, "64-efi-handoff" },
 572         { XLF_EFI_KEXEC, "kexec-efi-runtime" },
 573 };
 574
 575 static void print_flags(struct flag_info *flags, int count, uint value)
 576 {
 577         int i;
 578
 579         printf("%-20s:", "");
 580         for (i = 0; i < count; i++) {
 581                 uint mask = flags[i].bit;
 582
 583                 if (value & mask)
 584                         printf(" %s", flags[i].name);
 585         }
 586         printf("\n");
 587 }
 588
 589 static void show_loader(struct setup_header *hdr)
 590 {
 591         bool version_valid = false;
 592         int type, version;
 593         const char *name;
 594
 595         type = hdr->type_of_loader >> 4;
 596         version = hdr->type_of_loader & 0xf;
 597         if (type == 0xe)
 598                 type = 0x10 + hdr->ext_loader_type;
 599         version |= hdr->ext_loader_ver << 4;
 600         if (!hdr->type_of_loader) {
 601                 name = "pre-2.00 bootloader";
 602         } else if (hdr->type_of_loader == 0xff) {
 603                 name = "unknown";
 604         } else if (type < ARRAY_SIZE(bootloader_id)) {
 605                 name = bootloader_id[type];
 606                 version_valid = true;
 607         } else {
 608                 name = "undefined";
 609         }
 610         printf("%20s  %s", "", name);
 611         if (version_valid)
 612                 printf(", version %x", version);
 613         printf("\n");
 614 }
 615
 616 void zimage_dump(struct boot_params *base_ptr)
 617 {
 618         struct setup_header *hdr;
 619         const char *version;
 620         int i;
 621
 622         printf("Setup located at %p:\n\n", base_ptr);
 623         print_num64("ACPI RSDP addr", base_ptr->acpi_rsdp_addr);
 624
 625         printf("E820: %d entries\n", base_ptr->e820_entries);
 626         if (base_ptr->e820_entries) {
 627                 printf("%18s  %16s  %s\n", "Addr", "Size", "Type");
 628                 for (i = 0; i < base_ptr->e820_entries; i++) {
 629                         struct e820_entry *entry = &base_ptr->e820_map[i];
 630
 631                         printf("%12llx  %10llx  %s\n", entry->addr, entry->size,
 632                                entry->type < E820_COUNT ?
 633                                e820_type_name[entry->type] :
 634                                simple_itoa(entry->type));
 635                 }
 636         }
 637
 638         hdr = &base_ptr->hdr;
 639         print_num("Setup sectors", hdr->setup_sects);
 640         print_num("Root flags", hdr->root_flags);
 641         print_num("Sys size", hdr->syssize);
 642         print_num("RAM size", hdr->ram_size);
 643         print_num("Video mode", hdr->vid_mode);
 644         print_num("Root dev", hdr->root_dev);
 645         print_num("Boot flag", hdr->boot_flag);
 646         print_num("Jump", hdr->jump);
 647         print_num("Header", hdr->header);
 648         if (hdr->header == KERNEL_V2_MAGIC)
 649                 printf("%-20s  %s\n", "", "Kernel V2");
 650         else
 651                 printf("%-20s  %s\n", "", "Ancient kernel, using version 100");
 652         print_num("Version", hdr->version);
 653         print_num("Real mode switch", hdr->realmode_swtch);
 654         print_num("Start sys", hdr->start_sys);
 655         print_num("Kernel version", hdr->kernel_version);
 656         version = get_kernel_version(base_ptr, (void *)state.bzimage_addr);
 657         if (version)
 658                 printf("   @%p: %s\n", version, version);
 659         print_num("Type of loader", hdr->type_of_loader);
 660         show_loader(hdr);
 661         print_num("Load flags", hdr->loadflags);
 662         print_flags(load_flags, ARRAY_SIZE(load_flags), hdr->loadflags);
 663         print_num("Setup move size", hdr->setup_move_size);
 664         print_num("Code32 start", hdr->code32_start);
 665         print_num("Ramdisk image", hdr->ramdisk_image);
 666         print_num("Ramdisk size", hdr->ramdisk_size);
 667         print_num("Bootsect kludge", hdr->bootsect_kludge);
 668         print_num("Heap end ptr", hdr->heap_end_ptr);
 669         print_num("Ext loader ver", hdr->ext_loader_ver);
 670         print_num("Ext loader type", hdr->ext_loader_type);
 671         print_num("Command line ptr", hdr->cmd_line_ptr);
 672         if (hdr->cmd_line_ptr) {
 673                 printf("   ");
 674                 /* Use puts() to avoid limits from CONFIG_SYS_PBSIZE */
 675                 puts((char *)(ulong)hdr->cmd_line_ptr);
 676                 printf("\n");
 677         }
 678         print_num("Initrd addr max", hdr->initrd_addr_max);
 679         print_num("Kernel alignment", hdr->kernel_alignment);
 680         print_num("Relocatable kernel", hdr->relocatable_kernel);
 681         print_num("Min alignment", hdr->min_alignment);
 682         if (hdr->min_alignment)
 683                 printf("%-20s: %x\n", "", 1 << hdr->min_alignment);
 684         print_num("Xload flags", hdr->xloadflags);
 685         print_flags(xload_flags, ARRAY_SIZE(xload_flags), hdr->xloadflags);
 686         print_num("Cmdline size", hdr->cmdline_size);
 687         print_num("Hardware subarch", hdr->hardware_subarch);
 688         print_num64("HW subarch data", hdr->hardware_subarch_data);
 689         print_num("Payload offset", hdr->payload_offset);
 690         print_num("Payload length", hdr->payload_length);
 691         print_num64("Setup data", hdr->setup_data);
 692         print_num64("Pref address", hdr->pref_address);
 693         print_num("Init size", hdr->init_size);
 694         print_num("Handover offset", hdr->handover_offset);
 695         if (get_boot_protocol(hdr, false) >= 0x215)
 696                 print_num("Kernel info offset", hdr->kernel_info_offset);
 697 }
 698
 699 static int do_zboot_dump(struct cmd_tbl *cmdtp, int flag, int argc,
 700                          char *const argv[])
 701 {
 702         struct boot_params *base_ptr = state.base_ptr;
 703
 704         if (argc > 1)
 705                 base_ptr = (void *)hextoul(argv[1], NULL);
 706         if (!base_ptr) {
 707                 printf("No zboot setup_base\n");
 708                 return CMD_RET_FAILURE;
 709         }
 710         zimage_dump(base_ptr);
 711
 712         return 0;
 713 }
 714
 715 /* Note: This defines the complete_zboot() function */
 716 U_BOOT_SUBCMDS(zboot,
 717         U_BOOT_CMD_MKENT(start, 8, 1, do_zboot_start, "", ""),
 718         U_BOOT_CMD_MKENT(load, 1, 1, do_zboot_load, "", ""),
 719         U_BOOT_CMD_MKENT(setup, 1, 1, do_zboot_setup, "", ""),
 720         U_BOOT_CMD_MKENT(info, 1, 1, do_zboot_info, "", ""),
 721         U_BOOT_CMD_MKENT(go, 1, 1, do_zboot_go, "", ""),
 722         U_BOOT_CMD_MKENT(dump, 2, 1, do_zboot_dump, "", ""),
 723 )
 724
 725 int do_zboot_states(struct cmd_tbl *cmdtp, int flag, int argc,
 726                     char *const argv[], int state_mask)
 727 {
 728         int i;
 729
 730         for (i = 0; i < ZBOOT_STATE_COUNT; i++) {
 731                 struct cmd_tbl *cmd = &zboot_subcmds[i];
 732                 int mask = 1 << i;
 733                 int ret;
 734
 735                 if (mask & state_mask) {
 736                         ret = cmd->cmd(cmd, flag, argc, argv);
 737                         if (ret)
 738                                 return ret;
 739                 }
 740         }
 741
 742         return 0;
 743 }
 744
 745 int do_zboot_parent(struct cmd_tbl *cmdtp, int flag, int argc,
 746                     char *const argv[], int *repeatable)
 747 {
 748         /* determine if we have a sub command */
 749         if (argc > 1) {
 750                 char *endp;
 751
 752                 hextoul(argv[1], &endp);
 753                 /*
 754                  * endp pointing to nul means that argv[1] was just a valid
 755                  * number, so pass it along to the normal processing
 756                  */
 757                 if (*endp)
 758                         return do_zboot(cmdtp, flag, argc, argv, repeatable);
 759         }
 760
 761         do_zboot_states(cmdtp, flag, argc, argv, ZBOOT_STATE_START |
 762                         ZBOOT_STATE_LOAD | ZBOOT_STATE_SETUP |
 763                         ZBOOT_STATE_INFO | ZBOOT_STATE_GO);
 764
 765         return CMD_RET_FAILURE;
 766 }
 767
 768 U_BOOT_CMDREP_COMPLETE(
 769         zboot, 8, do_zboot_parent, "Boot bzImage",
 770         "[addr] [size] [initrd addr] [initrd size] [setup] [cmdline]\n"
 771         "      addr -        The optional starting address of the bzimage.\n"
 772         "                    If not set it defaults to the environment\n"
 773         "                    variable \"fileaddr\".\n"
 774         "      size -        The optional size of the bzimage. Defaults to\n"
 775         "                    zero.\n"
 776         "      initrd addr - The address of the initrd image to use, if any.\n"
 777         "      initrd size - The size of the initrd image to use, if any.\n"
 778         "      setup -       The address of the kernel setup region, if this\n"
 779         "                    is not at addr\n"
 780         "      cmdline -     Environment variable containing the kernel\n"
 781         "                    command line, to override U-Boot's normal\n"
 782         "                    cmdline generation\n"
 783         "\n"
 784         "Sub-commands to do part of the zboot sequence:\n"
 785         "\tstart [addr [arg ...]] - specify arguments\n"
 786         "\tload   - load OS image\n"
 787         "\tsetup  - set up table\n"
 788         "\tinfo   - show summary info\n"
 789         "\tgo     - start OS\n"
 790         "\tdump [addr]    - dump info (optional address of boot params)",
 791         complete_zboot
 792 );