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/efi.h>
  33 #include <asm/global_data.h>
  34 #ifdef CONFIG_SYS_COREBOOT
  35 #include <asm/arch/timestamp.h>
  36 #endif
  37 #include <linux/compiler.h>
  38 #include <linux/ctype.h>
  39 #include <linux/libfdt.h>
  40
  41 DECLARE_GLOBAL_DATA_PTR;
  42
  43 /*
  44  * Memory lay-out:
  45  *
  46  * relative to setup_base (which is 0x90000 currently)
  47  *
  48  *      0x0000-0x7FFF   Real mode kernel
  49  *      0x8000-0x8FFF   Stack and heap
  50  *      0x9000-0x90FF   Kernel command line
  51  */
  52 #define DEFAULT_SETUP_BASE      0x90000
  53 #define COMMAND_LINE_OFFSET     0x9000
  54 #define HEAP_END_OFFSET         0x8e00
  55
  56 #define COMMAND_LINE_SIZE       2048
  57
  58 /**
  59  * struct zboot_state - Current state of the boot
  60  *
  61  * @bzimage_addr: Address of the bzImage to boot
  62  * @bzimage_size: Size of the bzImage, or 0 to detect this
  63  * @initrd_addr: Address of the initial ramdisk, or 0 if none
  64  * @initrd_size: Size of the initial ramdisk, or 0 if none
  65  * @load_address: Address where the bzImage is moved before booting, either
  66  *      BZIMAGE_LOAD_ADDR or ZIMAGE_LOAD_ADDR
  67  * @base_ptr: Pointer to the boot parameters, typically at address
  68  *      DEFAULT_SETUP_BASE
  69  * @cmdline: Environment variable containing the 'override' command line, or
  70  *      NULL to use the one in the setup block
  71  */
  72 struct zboot_state {
  73         ulong bzimage_addr;
  74         ulong bzimage_size;
  75         ulong initrd_addr;
  76         ulong initrd_size;
  77         ulong load_address;
  78         struct boot_params *base_ptr;
  79         char *cmdline;
  80 } state;
  81
  82 enum {
  83         ZBOOT_STATE_START       = BIT(0),
  84         ZBOOT_STATE_LOAD        = BIT(1),
  85         ZBOOT_STATE_SETUP       = BIT(2),
  86         ZBOOT_STATE_INFO        = BIT(3),
  87         ZBOOT_STATE_GO          = BIT(4),
  88
  89         /* This one doesn't execute automatically, so stop the count before 5 */
  90         ZBOOT_STATE_DUMP        = BIT(5),
  91         ZBOOT_STATE_COUNT       = 5,
  92 };
  93
  94 static void build_command_line(char *command_line, int auto_boot)
  95 {
  96         char *env_command_line;
  97
  98         command_line[0] = '\0';
  99
 100         env_command_line =  env_get("bootargs");
 101
 102         /* set console= argument if we use a serial console */
 103         if (!strstr(env_command_line, "console=")) {
 104                 if (!strcmp(env_get("stdout"), "serial")) {
 105
 106                         /* We seem to use serial console */
 107                         sprintf(command_line, "console=ttyS0,%s ",
 108                                 env_get("baudrate"));
 109                 }
 110         }
 111
 112         if (auto_boot)
 113                 strcat(command_line, "auto ");
 114
 115         if (env_command_line)
 116                 strcat(command_line, env_command_line);
 117 #ifdef DEBUG
 118         printf("Kernel command line:");
 119         puts(command_line);
 120         printf("\n");
 121 #endif
 122 }
 123
 124 static int kernel_magic_ok(struct setup_header *hdr)
 125 {
 126         if (KERNEL_MAGIC != hdr->boot_flag) {
 127                 printf("Error: Invalid Boot Flag "
 128                         "(found 0x%04x, expected 0x%04x)\n",
 129                         hdr->boot_flag, KERNEL_MAGIC);
 130                 return 0;
 131         } else {
 132                 printf("Valid Boot Flag\n");
 133                 return 1;
 134         }
 135 }
 136
 137 static int get_boot_protocol(struct setup_header *hdr, bool verbose)
 138 {
 139         if (hdr->header == KERNEL_V2_MAGIC) {
 140                 if (verbose)
 141                         printf("Magic signature found\n");
 142                 return hdr->version;
 143         } else {
 144                 /* Very old kernel */
 145                 if (verbose)
 146                         printf("Magic signature not found\n");
 147                 return 0x0100;
 148         }
 149 }
 150
 151 static int setup_device_tree(struct setup_header *hdr, const void *fdt_blob)
 152 {
 153         int bootproto = get_boot_protocol(hdr, false);
 154         struct setup_data *sd;
 155         int size;
 156
 157         if (bootproto < 0x0209)
 158                 return -ENOTSUPP;
 159
 160         if (!fdt_blob)
 161                 return 0;
 162
 163         size = fdt_totalsize(fdt_blob);
 164         if (size < 0)
 165                 return -EINVAL;
 166
 167         size += sizeof(struct setup_data);
 168         sd = (struct setup_data *)malloc(size);
 169         if (!sd) {
 170                 printf("Not enough memory for DTB setup data\n");
 171                 return -ENOMEM;
 172         }
 173
 174         sd->next = hdr->setup_data;
 175         sd->type = SETUP_DTB;
 176         sd->len = fdt_totalsize(fdt_blob);
 177         memcpy(sd->data, fdt_blob, sd->len);
 178         hdr->setup_data = (unsigned long)sd;
 179
 180         return 0;
 181 }
 182
 183 static const char *get_kernel_version(struct boot_params *params,
 184                                       void *kernel_base)
 185 {
 186         struct setup_header *hdr = &params->hdr;
 187         int bootproto;
 188         const char *s, *end;
 189
 190         bootproto = get_boot_protocol(hdr, false);
 191         if (bootproto < 0x0200 || hdr->setup_sects < 15)
 192                 return NULL;
 193
 194         /* sanity-check the kernel version in case it is missing */
 195         for (s = kernel_base + hdr->kernel_version + 0x200, end = s + 0x100; *s;
 196              s++) {
 197                 if (!isprint(*s))
 198                         return NULL;
 199         }
 200
 201         return kernel_base + hdr->kernel_version + 0x200;
 202 }
 203
 204 struct boot_params *load_zimage(char *image, unsigned long kernel_size,
 205                                 ulong *load_addressp)
 206 {
 207         struct boot_params *setup_base;
 208         const char *version;
 209         int setup_size;
 210         int bootproto;
 211         int big_image;
 212
 213         struct boot_params *params = (struct boot_params *)image;
 214         struct setup_header *hdr = &params->hdr;
 215
 216         /* base address for real-mode segment */
 217         setup_base = (struct boot_params *)DEFAULT_SETUP_BASE;
 218
 219         if (!kernel_magic_ok(hdr))
 220                 return 0;
 221
 222         /* determine size of setup */
 223         if (0 == hdr->setup_sects) {
 224                 log_warning("Setup Sectors = 0 (defaulting to 4)\n");
 225                 setup_size = 5 * 512;
 226         } else {
 227                 setup_size = (hdr->setup_sects + 1) * 512;
 228         }
 229
 230         log_debug("Setup Size = 0x%8.8lx\n", (ulong)setup_size);
 231
 232         if (setup_size > SETUP_MAX_SIZE)
 233                 printf("Error: Setup is too large (%d bytes)\n", setup_size);
 234
 235         /* determine boot protocol version */
 236         bootproto = get_boot_protocol(hdr, true);
 237
 238         log_debug("Using boot protocol version %x.%02x\n",
 239                   (bootproto & 0xff00) >> 8, bootproto & 0xff);
 240
 241         version = get_kernel_version(params, image);
 242         if (version)
 243                 printf("Linux kernel version %s\n", version);
 244         else
 245                 printf("Setup Sectors < 15 - Cannot print kernel version\n");
 246
 247         /* Determine image type */
 248         big_image = (bootproto >= 0x0200) &&
 249                     (hdr->loadflags & BIG_KERNEL_FLAG);
 250
 251         /* Determine load address */
 252         if (big_image)
 253                 *load_addressp = BZIMAGE_LOAD_ADDR;
 254         else
 255                 *load_addressp = ZIMAGE_LOAD_ADDR;
 256
 257         printf("Building boot_params at 0x%8.8lx\n", (ulong)setup_base);
 258         memset(setup_base, 0, sizeof(*setup_base));
 259         setup_base->hdr = params->hdr;
 260
 261         if (bootproto >= 0x0204)
 262                 kernel_size = hdr->syssize * 16;
 263         else
 264                 kernel_size -= setup_size;
 265
 266         if (bootproto == 0x0100) {
 267                 /*
 268                  * A very old kernel MUST have its real-mode code
 269                  * loaded at 0x90000
 270                  */
 271                 if ((ulong)setup_base != 0x90000) {
 272                         /* Copy the real-mode kernel */
 273                         memmove((void *)0x90000, setup_base, setup_size);
 274
 275                         /* Copy the command line */
 276                         memmove((void *)0x99000,
 277                                 (u8 *)setup_base + COMMAND_LINE_OFFSET,
 278                                 COMMAND_LINE_SIZE);
 279
 280                          /* Relocated */
 281                         setup_base = (struct boot_params *)0x90000;
 282                 }
 283
 284                 /* It is recommended to clear memory up to the 32K mark */
 285                 memset((u8 *)0x90000 + setup_size, 0,
 286                        SETUP_MAX_SIZE - setup_size);
 287         }
 288
 289         if (big_image) {
 290                 if (kernel_size > BZIMAGE_MAX_SIZE) {
 291                         printf("Error: bzImage kernel too big! "
 292                                 "(size: %ld, max: %d)\n",
 293                                 kernel_size, BZIMAGE_MAX_SIZE);
 294                         return 0;
 295                 }
 296         } else if ((kernel_size) > ZIMAGE_MAX_SIZE) {
 297                 printf("Error: zImage kernel too big! (size: %ld, max: %d)\n",
 298                        kernel_size, ZIMAGE_MAX_SIZE);
 299                 return 0;
 300         }
 301
 302         printf("Loading %s at address %lx (%ld bytes)\n",
 303                big_image ? "bzImage" : "zImage", *load_addressp, kernel_size);
 304
 305         memmove((void *)*load_addressp, image + setup_size, kernel_size);
 306
 307         return setup_base;
 308 }
 309
 310 int setup_zimage(struct boot_params *setup_base, char *cmd_line, int auto_boot,
 311                  ulong initrd_addr, ulong initrd_size, ulong cmdline_force)
 312 {
 313         struct setup_header *hdr = &setup_base->hdr;
 314         int bootproto = get_boot_protocol(hdr, false);
 315
 316         log_debug("Setup E820 entries\n");
 317         if (IS_ENABLED(CONFIG_COREBOOT_SYSINFO)) {
 318                 setup_base->e820_entries = cb_install_e820_map(
 319                         ARRAY_SIZE(setup_base->e820_map), setup_base->e820_map);
 320         } else {
 321                 setup_base->e820_entries = install_e820_map(
 322                         ARRAY_SIZE(setup_base->e820_map), setup_base->e820_map);
 323         }
 324
 325         if (bootproto == 0x0100) {
 326                 setup_base->screen_info.cl_magic = COMMAND_LINE_MAGIC;
 327                 setup_base->screen_info.cl_offset = COMMAND_LINE_OFFSET;
 328         }
 329         if (bootproto >= 0x0200) {
 330                 hdr->type_of_loader = 0x80;     /* U-Boot version 0 */
 331                 if (initrd_addr) {
 332                         printf("Initial RAM disk at linear address "
 333                                "0x%08lx, size %ld bytes\n",
 334                                initrd_addr, initrd_size);
 335
 336                         hdr->ramdisk_image = initrd_addr;
 337                         hdr->ramdisk_size = initrd_size;
 338                 }
 339         }
 340
 341         if (bootproto >= 0x0201) {
 342                 hdr->heap_end_ptr = HEAP_END_OFFSET;
 343                 hdr->loadflags |= HEAP_FLAG;
 344         }
 345
 346         if (cmd_line) {
 347                 int max_size = 0xff;
 348                 int ret;
 349
 350                 log_debug("Setup cmdline\n");
 351                 if (bootproto >= 0x0206)
 352                         max_size = hdr->cmdline_size;
 353                 if (bootproto >= 0x0202) {
 354                         hdr->cmd_line_ptr = (uintptr_t)cmd_line;
 355                 } else if (bootproto >= 0x0200) {
 356                         setup_base->screen_info.cl_magic = COMMAND_LINE_MAGIC;
 357                         setup_base->screen_info.cl_offset =
 358                                 (uintptr_t)cmd_line - (uintptr_t)setup_base;
 359
 360                         hdr->setup_move_size = 0x9100;
 361                 }
 362
 363                 /* build command line at COMMAND_LINE_OFFSET */
 364                 if (cmdline_force)
 365                         strcpy(cmd_line, (char *)cmdline_force);
 366                 else
 367                         build_command_line(cmd_line, auto_boot);
 368                 ret = bootm_process_cmdline(cmd_line, max_size, BOOTM_CL_ALL);
 369                 if (ret) {
 370                         printf("Cmdline setup failed (max_size=%x, bootproto=%x, err=%d)\n",
 371                                max_size, bootproto, ret);
 372                         return ret;
 373                 }
 374                 printf("Kernel command line: \"");
 375                 puts(cmd_line);
 376                 printf("\"\n");
 377         }
 378
 379         if (IS_ENABLED(CONFIG_INTEL_MID) && bootproto >= 0x0207)
 380                 hdr->hardware_subarch = X86_SUBARCH_INTEL_MID;
 381
 382         if (IS_ENABLED(CONFIG_GENERATE_ACPI_TABLE))
 383                 setup_base->acpi_rsdp_addr = acpi_get_rsdp_addr();
 384
 385         log_debug("Setup devicetree\n");
 386         setup_device_tree(hdr, (const void *)env_get_hex("fdtaddr", 0));
 387         setup_video(&setup_base->screen_info);
 388
 389         if (IS_ENABLED(CONFIG_EFI_STUB))
 390                 setup_efi_info(&setup_base->efi_info);
 391
 392         return 0;
 393 }
 394
 395 static int do_zboot_start(struct cmd_tbl *cmdtp, int flag, int argc,
 396                           char *const argv[])
 397 {
 398         const char *s;
 399
 400         memset(&state, '\0', sizeof(state));
 401         if (argc >= 2) {
 402                 /* argv[1] holds the address of the bzImage */
 403                 s = argv[1];
 404         } else {
 405                 s = env_get("fileaddr");
 406         }
 407
 408         if (s)
 409                 state.bzimage_addr = hextoul(s, NULL);
 410
 411         if (argc >= 3) {
 412                 /* argv[2] holds the size of the bzImage */
 413                 state.bzimage_size = hextoul(argv[2], NULL);
 414         }
 415
 416         if (argc >= 4)
 417                 state.initrd_addr = hextoul(argv[3], NULL);
 418         if (argc >= 5)
 419                 state.initrd_size = hextoul(argv[4], NULL);
 420         if (argc >= 6) {
 421                 /*
 422                  * When the base_ptr is passed in, we assume that the image is
 423                  * already loaded at the address given by argv[1] and therefore
 424                  * the original bzImage is somewhere else, or not accessible.
 425                  * In any case, we don't need access to the bzImage since all
 426                  * the processing is assumed to be done.
 427                  *
 428                  * So set the base_ptr to the given address, use this arg as the
 429                  * load address and set bzimage_addr to 0 so we know that it
 430                  * cannot be proceesed (or processed again).
 431                  */
 432                 state.base_ptr = (void *)hextoul(argv[5], NULL);
 433                 state.load_address = state.bzimage_addr;
 434                 state.bzimage_addr = 0;
 435         }
 436         if (argc >= 7)
 437                 state.cmdline = env_get(argv[6]);
 438
 439         return 0;
 440 }
 441
 442 static int do_zboot_load(struct cmd_tbl *cmdtp, int flag, int argc,
 443                          char *const argv[])
 444 {
 445         struct boot_params *base_ptr;
 446
 447         if (state.base_ptr) {
 448                 struct boot_params *from = (struct boot_params *)state.base_ptr;
 449
 450                 base_ptr = (struct boot_params *)DEFAULT_SETUP_BASE;
 451                 log_debug("Building boot_params at 0x%8.8lx\n",
 452                           (ulong)base_ptr);
 453                 memset(base_ptr, '\0', sizeof(*base_ptr));
 454                 base_ptr->hdr = from->hdr;
 455         } else {
 456                 base_ptr = load_zimage((void *)state.bzimage_addr, state.bzimage_size,
 457                                        &state.load_address);
 458                 if (!base_ptr) {
 459                         puts("## Kernel loading failed ...\n");
 460                         return CMD_RET_FAILURE;
 461                 }
 462         }
 463         state.base_ptr = base_ptr;
 464         if (env_set_hex("zbootbase", (ulong)base_ptr) ||
 465             env_set_hex("zbootaddr", state.load_address))
 466                 return CMD_RET_FAILURE;
 467
 468         return 0;
 469 }
 470
 471 static int do_zboot_setup(struct cmd_tbl *cmdtp, int flag, int argc,
 472                           char *const argv[])
 473 {
 474         struct boot_params *base_ptr = state.base_ptr;
 475         int ret;
 476
 477         if (!base_ptr) {
 478                 printf("base is not set: use 'zboot load' first\n");
 479                 return CMD_RET_FAILURE;
 480         }
 481         ret = setup_zimage(base_ptr, (char *)base_ptr + COMMAND_LINE_OFFSET,
 482                            0, state.initrd_addr, state.initrd_size,
 483                            (ulong)state.cmdline);
 484         if (ret) {
 485                 puts("Setting up boot parameters failed ...\n");
 486                 return CMD_RET_FAILURE;
 487         }
 488
 489         return 0;
 490 }
 491
 492 static int do_zboot_info(struct cmd_tbl *cmdtp, int flag, int argc,
 493                          char *const argv[])
 494 {
 495         printf("Kernel loaded at %08lx, setup_base=%p\n",
 496                state.load_address, state.base_ptr);
 497
 498         return 0;
 499 }
 500
 501 static int do_zboot_go(struct cmd_tbl *cmdtp, int flag, int argc,
 502                        char *const argv[])
 503 {
 504         int ret;
 505
 506         disable_interrupts();
 507
 508         /* we assume that the kernel is in place */
 509         ret = boot_linux_kernel((ulong)state.base_ptr, state.load_address,
 510                                 false);
 511         printf("Kernel returned! (err=%d)\n", ret);
 512
 513         return CMD_RET_FAILURE;
 514 }
 515
 516 static void print_num(const char *name, ulong value)
 517 {
 518         printf("%-20s: %lx\n", name, value);
 519 }
 520
 521 static void print_num64(const char *name, u64 value)
 522 {
 523         printf("%-20s: %llx\n", name, value);
 524 }
 525
 526 static const char *const e820_type_name[E820_COUNT] = {
 527         [E820_RAM] = "RAM",
 528         [E820_RESERVED] = "Reserved",
 529         [E820_ACPI] = "ACPI",
 530         [E820_NVS] = "ACPI NVS",
 531         [E820_UNUSABLE] = "Unusable",
 532 };
 533
 534 static const char *const bootloader_id[] = {
 535         "LILO",
 536         "Loadlin",
 537         "bootsect-loader",
 538         "Syslinux",
 539         "Etherboot/gPXE/iPXE",
 540         "ELILO",
 541         "undefined",
 542         "GRUB",
 543         "U-Boot",
 544         "Xen",
 545         "Gujin",
 546         "Qemu",
 547         "Arcturus Networks uCbootloader",
 548         "kexec-tools",
 549         "Extended",
 550         "Special",
 551         "Reserved",
 552         "Minimal Linux Bootloader",
 553         "OVMF UEFI virtualization stack",
 554 };
 555
 556 struct flag_info {
 557         uint bit;
 558         const char *name;
 559 };
 560
 561 static struct flag_info load_flags[] = {
 562         { LOADED_HIGH, "loaded-high" },
 563         { QUIET_FLAG, "quiet" },
 564         { KEEP_SEGMENTS, "keep-segments" },
 565         { CAN_USE_HEAP, "can-use-heap" },
 566 };
 567
 568 static struct flag_info xload_flags[] = {
 569         { XLF_KERNEL_64, "64-bit-entry" },
 570         { XLF_CAN_BE_LOADED_ABOVE_4G, "can-load-above-4gb" },
 571         { XLF_EFI_HANDOVER_32, "32-efi-handoff" },
 572         { XLF_EFI_HANDOVER_64, "64-efi-handoff" },
 573         { XLF_EFI_KEXEC, "kexec-efi-runtime" },
 574 };
 575
 576 static void print_flags(struct flag_info *flags, int count, uint value)
 577 {
 578         int i;
 579
 580         printf("%-20s:", "");
 581         for (i = 0; i < count; i++) {
 582                 uint mask = flags[i].bit;
 583
 584                 if (value & mask)
 585                         printf(" %s", flags[i].name);
 586         }
 587         printf("\n");
 588 }
 589
 590 static void show_loader(struct setup_header *hdr)
 591 {
 592         bool version_valid = false;
 593         int type, version;
 594         const char *name;
 595
 596         type = hdr->type_of_loader >> 4;
 597         version = hdr->type_of_loader & 0xf;
 598         if (type == 0xe)
 599                 type = 0x10 + hdr->ext_loader_type;
 600         version |= hdr->ext_loader_ver << 4;
 601         if (!hdr->type_of_loader) {
 602                 name = "pre-2.00 bootloader";
 603         } else if (hdr->type_of_loader == 0xff) {
 604                 name = "unknown";
 605         } else if (type < ARRAY_SIZE(bootloader_id)) {
 606                 name = bootloader_id[type];
 607                 version_valid = true;
 608         } else {
 609                 name = "undefined";
 610         }
 611         printf("%20s  %s", "", name);
 612         if (version_valid)
 613                 printf(", version %x", version);
 614         printf("\n");
 615 }
 616
 617 void zimage_dump(struct boot_params *base_ptr)
 618 {
 619         struct setup_header *hdr;
 620         const char *version;
 621         int i;
 622
 623         printf("Setup located at %p:\n\n", base_ptr);
 624         print_num64("ACPI RSDP addr", base_ptr->acpi_rsdp_addr);
 625
 626         printf("E820: %d entries\n", base_ptr->e820_entries);
 627         if (base_ptr->e820_entries) {
 628                 printf("%18s  %16s  %s\n", "Addr", "Size", "Type");
 629                 for (i = 0; i < base_ptr->e820_entries; i++) {
 630                         struct e820_entry *entry = &base_ptr->e820_map[i];
 631
 632                         printf("%12llx  %10llx  %s\n", entry->addr, entry->size,
 633                                entry->type < E820_COUNT ?
 634                                e820_type_name[entry->type] :
 635                                simple_itoa(entry->type));
 636                 }
 637         }
 638
 639         hdr = &base_ptr->hdr;
 640         print_num("Setup sectors", hdr->setup_sects);
 641         print_num("Root flags", hdr->root_flags);
 642         print_num("Sys size", hdr->syssize);
 643         print_num("RAM size", hdr->ram_size);
 644         print_num("Video mode", hdr->vid_mode);
 645         print_num("Root dev", hdr->root_dev);
 646         print_num("Boot flag", hdr->boot_flag);
 647         print_num("Jump", hdr->jump);
 648         print_num("Header", hdr->header);
 649         if (hdr->header == KERNEL_V2_MAGIC)
 650                 printf("%-20s  %s\n", "", "Kernel V2");
 651         else
 652                 printf("%-20s  %s\n", "", "Ancient kernel, using version 100");
 653         print_num("Version", hdr->version);
 654         print_num("Real mode switch", hdr->realmode_swtch);
 655         print_num("Start sys", hdr->start_sys);
 656         print_num("Kernel version", hdr->kernel_version);
 657         version = get_kernel_version(base_ptr, (void *)state.bzimage_addr);
 658         if (version)
 659                 printf("   @%p: %s\n", version, version);
 660         print_num("Type of loader", hdr->type_of_loader);
 661         show_loader(hdr);
 662         print_num("Load flags", hdr->loadflags);
 663         print_flags(load_flags, ARRAY_SIZE(load_flags), hdr->loadflags);
 664         print_num("Setup move size", hdr->setup_move_size);
 665         print_num("Code32 start", hdr->code32_start);
 666         print_num("Ramdisk image", hdr->ramdisk_image);
 667         print_num("Ramdisk size", hdr->ramdisk_size);
 668         print_num("Bootsect kludge", hdr->bootsect_kludge);
 669         print_num("Heap end ptr", hdr->heap_end_ptr);
 670         print_num("Ext loader ver", hdr->ext_loader_ver);
 671         print_num("Ext loader type", hdr->ext_loader_type);
 672         print_num("Command line ptr", hdr->cmd_line_ptr);
 673         if (hdr->cmd_line_ptr) {
 674                 printf("   ");
 675                 /* Use puts() to avoid limits from CONFIG_SYS_PBSIZE */
 676                 puts((char *)(ulong)hdr->cmd_line_ptr);
 677                 printf("\n");
 678         }
 679         print_num("Initrd addr max", hdr->initrd_addr_max);
 680         print_num("Kernel alignment", hdr->kernel_alignment);
 681         print_num("Relocatable kernel", hdr->relocatable_kernel);
 682         print_num("Min alignment", hdr->min_alignment);
 683         if (hdr->min_alignment)
 684                 printf("%-20s: %x\n", "", 1 << hdr->min_alignment);
 685         print_num("Xload flags", hdr->xloadflags);
 686         print_flags(xload_flags, ARRAY_SIZE(xload_flags), hdr->xloadflags);
 687         print_num("Cmdline size", hdr->cmdline_size);
 688         print_num("Hardware subarch", hdr->hardware_subarch);
 689         print_num64("HW subarch data", hdr->hardware_subarch_data);
 690         print_num("Payload offset", hdr->payload_offset);
 691         print_num("Payload length", hdr->payload_length);
 692         print_num64("Setup data", hdr->setup_data);
 693         print_num64("Pref address", hdr->pref_address);
 694         print_num("Init size", hdr->init_size);
 695         print_num("Handover offset", hdr->handover_offset);
 696         if (get_boot_protocol(hdr, false) >= 0x215)
 697                 print_num("Kernel info offset", hdr->kernel_info_offset);
 698 }
 699
 700 static int do_zboot_dump(struct cmd_tbl *cmdtp, int flag, int argc,
 701                          char *const argv[])
 702 {
 703         struct boot_params *base_ptr = state.base_ptr;
 704
 705         if (argc > 1)
 706                 base_ptr = (void *)hextoul(argv[1], NULL);
 707         if (!base_ptr) {
 708                 printf("No zboot setup_base\n");
 709                 return CMD_RET_FAILURE;
 710         }
 711         zimage_dump(base_ptr);
 712
 713         return 0;
 714 }
 715
 716 /* Note: This defines the complete_zboot() function */
 717 U_BOOT_SUBCMDS(zboot,
 718         U_BOOT_CMD_MKENT(start, 8, 1, do_zboot_start, "", ""),
 719         U_BOOT_CMD_MKENT(load, 1, 1, do_zboot_load, "", ""),
 720         U_BOOT_CMD_MKENT(setup, 1, 1, do_zboot_setup, "", ""),
 721         U_BOOT_CMD_MKENT(info, 1, 1, do_zboot_info, "", ""),
 722         U_BOOT_CMD_MKENT(go, 1, 1, do_zboot_go, "", ""),
 723         U_BOOT_CMD_MKENT(dump, 2, 1, do_zboot_dump, "", ""),
 724 )
 725
 726 int do_zboot_states(struct cmd_tbl *cmdtp, int flag, int argc,
 727                     char *const argv[], int state_mask)
 728 {
 729         int i;
 730
 731         for (i = 0; i < ZBOOT_STATE_COUNT; i++) {
 732                 struct cmd_tbl *cmd = &zboot_subcmds[i];
 733                 int mask = 1 << i;
 734                 int ret;
 735
 736                 if (mask & state_mask) {
 737                         ret = cmd->cmd(cmd, flag, argc, argv);
 738                         if (ret)
 739                                 return ret;
 740                 }
 741         }
 742
 743         return 0;
 744 }
 745
 746 int do_zboot_parent(struct cmd_tbl *cmdtp, int flag, int argc,
 747                     char *const argv[], int *repeatable)
 748 {
 749         /* determine if we have a sub command */
 750         if (argc > 1) {
 751                 char *endp;
 752
 753                 hextoul(argv[1], &endp);
 754                 /*
 755                  * endp pointing to nul means that argv[1] was just a valid
 756                  * number, so pass it along to the normal processing
 757                  */
 758                 if (*endp)
 759                         return do_zboot(cmdtp, flag, argc, argv, repeatable);
 760         }
 761
 762         do_zboot_states(cmdtp, flag, argc, argv, ZBOOT_STATE_START |
 763                         ZBOOT_STATE_LOAD | ZBOOT_STATE_SETUP |
 764                         ZBOOT_STATE_INFO | ZBOOT_STATE_GO);
 765
 766         return CMD_RET_FAILURE;
 767 }
 768
 769 U_BOOT_CMDREP_COMPLETE(
 770         zboot, 8, do_zboot_parent, "Boot bzImage",
 771         "[addr] [size] [initrd addr] [initrd size] [setup] [cmdline]\n"
 772         "      addr -        The optional starting address of the bzimage.\n"
 773         "                    If not set it defaults to the environment\n"
 774         "                    variable \"fileaddr\".\n"
 775         "      size -        The optional size of the bzimage. Defaults to\n"
 776         "                    zero.\n"
 777         "      initrd addr - The address of the initrd image to use, if any.\n"
 778         "      initrd size - The size of the initrd image to use, if any.\n"
 779         "      setup -       The address of the kernel setup region, if this\n"
 780         "                    is not at addr\n"
 781         "      cmdline -     Environment variable containing the kernel\n"
 782         "                    command line, to override U-Boot's normal\n"
 783         "                    cmdline generation\n"
 784         "\n"
 785         "Sub-commands to do part of the zboot sequence:\n"
 786         "\tstart [addr [arg ...]] - specify arguments\n"
 787         "\tload   - load OS image\n"
 788         "\tsetup  - set up table\n"
 789         "\tinfo   - show summary info\n"
 790         "\tgo     - start OS\n"
 791         "\tdump [addr]    - dump info (optional address of boot params)",
 792         complete_zboot
 793 );