sys/boot/efi/loader/main.c

   1 /*-
   2  * Copyright (c) 2008-2010 Rui Paulo
   3  * Copyright (c) 2006 Marcel Moolenaar
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 #include <sys/cdefs.h>
  29 __FBSDID("$FreeBSD$");
  30
  31 #include <sys/disk.h>
  32 #include <sys/param.h>
  33 #include <sys/reboot.h>
  34 #include <sys/boot.h>
  35 #include <inttypes.h>
  36 #include <stand.h>
  37 #include <string.h>
  38 #include <setjmp.h>
  39 #include <disk.h>
  40
  41 #include <efi.h>
  42 #include <efilib.h>
  43
  44 #include <uuid.h>
  45
  46 #include <bootstrap.h>
  47 #include <smbios.h>
  48
  49 #ifdef EFI_ZFS_BOOT
  50 #include <libzfs.h>
  51 #endif
  52
  53 #include "loader_efi.h"
  54
  55 extern char bootprog_info[];
  56
  57 struct arch_switch archsw;      /* MI/MD interface boundary */
  58
  59 EFI_GUID acpi = ACPI_TABLE_GUID;
  60 EFI_GUID acpi20 = ACPI_20_TABLE_GUID;
  61 EFI_GUID devid = DEVICE_PATH_PROTOCOL;
  62 EFI_GUID imgid = LOADED_IMAGE_PROTOCOL;
  63 EFI_GUID mps = MPS_TABLE_GUID;
  64 EFI_GUID netid = EFI_SIMPLE_NETWORK_PROTOCOL;
  65 EFI_GUID smbios = SMBIOS_TABLE_GUID;
  66 EFI_GUID dxe = DXE_SERVICES_TABLE_GUID;
  67 EFI_GUID hoblist = HOB_LIST_TABLE_GUID;
  68 EFI_GUID memtype = MEMORY_TYPE_INFORMATION_TABLE_GUID;
  69 EFI_GUID debugimg = DEBUG_IMAGE_INFO_TABLE_GUID;
  70 EFI_GUID fdtdtb = FDT_TABLE_GUID;
  71 EFI_GUID inputid = SIMPLE_TEXT_INPUT_PROTOCOL;
  72
  73 #ifdef EFI_ZFS_BOOT
  74 static void efi_zfs_probe(void);
  75 static uint64_t pool_guid;
  76 #endif
  77
  78 static int
  79 has_keyboard(void)
  80 {
  81         EFI_STATUS status;
  82         EFI_DEVICE_PATH *path;
  83         EFI_HANDLE *hin, *hin_end, *walker;
  84         UINTN sz;
  85         int retval = 0;
  86
  87         /*
  88          * Find all the handles that support the SIMPLE_TEXT_INPUT_PROTOCOL and
  89          * do the typical dance to get the right sized buffer.
  90          */
  91         sz = 0;
  92         hin = NULL;
  93         status = BS->LocateHandle(ByProtocol, &inputid, 0, &sz, 0);
  94         if (status == EFI_BUFFER_TOO_SMALL) {
  95                 hin = (EFI_HANDLE *)malloc(sz);
  96                 status = BS->LocateHandle(ByProtocol, &inputid, 0, &sz,
  97                     hin);
  98                 if (EFI_ERROR(status))
  99                         free(hin);
 100         }
 101         if (EFI_ERROR(status))
 102                 return retval;
 103
 104         /*
 105          * Look at each of the handles. If it supports the device path protocol,
 106          * use it to get the device path for this handle. Then see if that
 107          * device path matches either the USB device path for keyboards or the
 108          * legacy device path for keyboards.
 109          */
 110         hin_end = &hin[sz / sizeof(*hin)];
 111         for (walker = hin; walker < hin_end; walker++) {
 112                 status = BS->HandleProtocol(*walker, &devid, (VOID **)&path);
 113                 if (EFI_ERROR(status))
 114                         continue;
 115
 116                 while (!IsDevicePathEnd(path)) {
 117                         /*
 118                          * Check for the ACPI keyboard node. All PNP3xx nodes
 119                          * are keyboards of different flavors. Note: It is
 120                          * unclear of there's always a keyboard node when
 121                          * there's a keyboard controller, or if there's only one
 122                          * when a keyboard is detected at boot.
 123                          */
 124                         if (DevicePathType(path) == ACPI_DEVICE_PATH &&
 125                             (DevicePathSubType(path) == ACPI_DP ||
 126                                 DevicePathSubType(path) == ACPI_EXTENDED_DP)) {
 127                                 ACPI_HID_DEVICE_PATH  *acpi;
 128
 129                                 acpi = (ACPI_HID_DEVICE_PATH *)(void *)path;
 130                                 if ((EISA_ID_TO_NUM(acpi->HID) & 0xff00) == 0x300 &&
 131                                     (acpi->HID & 0xffff) == PNP_EISA_ID_CONST) {
 132                                         retval = 1;
 133                                         goto out;
 134                                 }
 135                         /*
 136                          * Check for USB keyboard node, if present. Unlike a
 137                          * PS/2 keyboard, these definitely only appear when
 138                          * connected to the system.
 139                          */
 140                         } else if (DevicePathType(path) == MESSAGING_DEVICE_PATH &&
 141                             DevicePathSubType(path) == MSG_USB_CLASS_DP) {
 142                                 USB_CLASS_DEVICE_PATH *usb;
 143
 144                                 usb = (USB_CLASS_DEVICE_PATH *)(void *)path;
 145                                 if (usb->DeviceClass == 3 && /* HID */
 146                                     usb->DeviceSubClass == 1 && /* Boot devices */
 147                                     usb->DeviceProtocol == 1) { /* Boot keyboards */
 148                                         retval = 1;
 149                                         goto out;
 150                                 }
 151                         }
 152                         path = NextDevicePathNode(path);
 153                 }
 154         }
 155 out:
 156         free(hin);
 157         return retval;
 158 }
 159
 160 static void
 161 set_devdesc_currdev(struct devsw *dev, int unit)
 162 {
 163         struct devdesc currdev;
 164         char *devname;
 165
 166         currdev.d_dev = dev;
 167         currdev.d_type = currdev.d_dev->dv_type;
 168         currdev.d_unit = unit;
 169         currdev.d_opendata = NULL;
 170         devname = efi_fmtdev(&currdev);
 171
 172         env_setenv("currdev", EV_VOLATILE, devname, efi_setcurrdev,
 173             env_nounset);
 174         env_setenv("loaddev", EV_VOLATILE, devname, env_noset, env_nounset);
 175 }
 176
 177 static int
 178 find_currdev(EFI_LOADED_IMAGE *img)
 179 {
 180         pdinfo_list_t *pdi_list;
 181         pdinfo_t *dp, *pp;
 182         EFI_DEVICE_PATH *devpath, *copy;
 183         EFI_HANDLE h;
 184         char *devname;
 185         struct devsw *dev;
 186         int unit;
 187         uint64_t extra;
 188
 189 #ifdef EFI_ZFS_BOOT
 190         /* Did efi_zfs_probe() detect the boot pool? */
 191         if (pool_guid != 0) {
 192                 struct zfs_devdesc currdev;
 193
 194                 currdev.d_dev = &zfs_dev;
 195                 currdev.d_unit = 0;
 196                 currdev.d_type = currdev.d_dev->dv_type;
 197                 currdev.d_opendata = NULL;
 198                 currdev.pool_guid = pool_guid;
 199                 currdev.root_guid = 0;
 200                 devname = efi_fmtdev(&currdev);
 201
 202                 env_setenv("currdev", EV_VOLATILE, devname, efi_setcurrdev,
 203                     env_nounset);
 204                 env_setenv("loaddev", EV_VOLATILE, devname, env_noset,
 205                     env_nounset);
 206                 init_zfs_bootenv(devname);
 207                 return (0);
 208         }
 209 #endif /* EFI_ZFS_BOOT */
 210
 211         /* We have device lists for hd, cd, fd, walk them all. */
 212         pdi_list = efiblk_get_pdinfo_list(&efipart_hddev);
 213         STAILQ_FOREACH(dp, pdi_list, pd_link) {
 214                 struct disk_devdesc currdev;
 215
 216                 currdev.d_dev = &efipart_hddev;
 217                 currdev.d_type = currdev.d_dev->dv_type;
 218                 currdev.d_unit = dp->pd_unit;
 219                 currdev.d_opendata = NULL;
 220                 currdev.d_slice = -1;
 221                 currdev.d_partition = -1;
 222
 223                 if (dp->pd_handle == img->DeviceHandle) {
 224                         devname = efi_fmtdev(&currdev);
 225
 226                         env_setenv("currdev", EV_VOLATILE, devname,
 227                             efi_setcurrdev, env_nounset);
 228                         env_setenv("loaddev", EV_VOLATILE, devname,
 229                             env_noset, env_nounset);
 230                         return (0);
 231                 }
 232                 /* Assuming GPT partitioning. */
 233                 STAILQ_FOREACH(pp, &dp->pd_part, pd_link) {
 234                         if (pp->pd_handle == img->DeviceHandle) {
 235                                 currdev.d_slice = pp->pd_unit;
 236                                 currdev.d_partition = 255;
 237                                 devname = efi_fmtdev(&currdev);
 238
 239                                 env_setenv("currdev", EV_VOLATILE, devname,
 240                                     efi_setcurrdev, env_nounset);
 241                                 env_setenv("loaddev", EV_VOLATILE, devname,
 242                                     env_noset, env_nounset);
 243                                 return (0);
 244                         }
 245                 }
 246         }
 247
 248         pdi_list = efiblk_get_pdinfo_list(&efipart_cddev);
 249         STAILQ_FOREACH(dp, pdi_list, pd_link) {
 250                 if (dp->pd_handle == img->DeviceHandle ||
 251                     dp->pd_alias == img->DeviceHandle) {
 252                         set_devdesc_currdev(&efipart_cddev, dp->pd_unit);
 253                         return (0);
 254                 }
 255         }
 256
 257         pdi_list = efiblk_get_pdinfo_list(&efipart_fddev);
 258         STAILQ_FOREACH(dp, pdi_list, pd_link) {
 259                 if (dp->pd_handle == img->DeviceHandle) {
 260                         set_devdesc_currdev(&efipart_fddev, dp->pd_unit);
 261                         return (0);
 262                 }
 263         }
 264
 265         /*
 266          * Try the device handle from our loaded image first.  If that
 267          * fails, use the device path from the loaded image and see if
 268          * any of the nodes in that path match one of the enumerated
 269          * handles.
 270          */
 271         if (efi_handle_lookup(img->DeviceHandle, &dev, &unit, &extra) == 0) {
 272                 set_devdesc_currdev(dev, unit);
 273                 return (0);
 274         }
 275
 276         copy = NULL;
 277         devpath = efi_lookup_image_devpath(IH);
 278         while (devpath != NULL) {
 279                 h = efi_devpath_handle(devpath);
 280                 if (h == NULL)
 281                         break;
 282
 283                 free(copy);
 284                 copy = NULL;
 285
 286                 if (efi_handle_lookup(h, &dev, &unit, &extra) == 0) {
 287                         set_devdesc_currdev(dev, unit);
 288                         return (0);
 289                 }
 290
 291                 devpath = efi_lookup_devpath(h);
 292                 if (devpath != NULL) {
 293                         copy = efi_devpath_trim(devpath);
 294                         devpath = copy;
 295                 }
 296         }
 297         free(copy);
 298
 299         return (ENOENT);
 300 }
 301
 302 EFI_STATUS
 303 main(int argc, CHAR16 *argv[])
 304 {
 305         char var[128];
 306         EFI_LOADED_IMAGE *img;
 307         EFI_GUID *guid;
 308         int i, j, vargood, howto;
 309         UINTN k;
 310         int has_kbd;
 311         char buf[40];
 312
 313         archsw.arch_autoload = efi_autoload;
 314         archsw.arch_getdev = efi_getdev;
 315         archsw.arch_copyin = efi_copyin;
 316         archsw.arch_copyout = efi_copyout;
 317         archsw.arch_readin = efi_readin;
 318 #ifdef EFI_ZFS_BOOT
 319         /* Note this needs to be set before ZFS init. */
 320         archsw.arch_zfs_probe = efi_zfs_probe;
 321 #endif
 322
 323         /* Init the time source */
 324         efi_time_init();
 325
 326         has_kbd = has_keyboard();
 327
 328         /*
 329          * XXX Chicken-and-egg problem; we want to have console output
 330          * early, but some console attributes may depend on reading from
 331          * eg. the boot device, which we can't do yet.  We can use
 332          * printf() etc. once this is done.
 333          */
 334         cons_probe();
 335
 336         /*
 337          * Initialise the block cache. Set the upper limit.
 338          */
 339         bcache_init(32768, 512);
 340
 341         /*
 342          * Parse the args to set the console settings, etc
 343          * boot1.efi passes these in, if it can read /boot.config or /boot/config
 344          * or iPXE may be setup to pass these in.
 345          *
 346          * Loop through the args, and for each one that contains an '=' that is
 347          * not the first character, add it to the environment.  This allows
 348          * loader and kernel env vars to be passed on the command line.  Convert
 349          * args from UCS-2 to ASCII (16 to 8 bit) as they are copied.
 350          */
 351         howto = 0;
 352         for (i = 1; i < argc; i++) {
 353                 if (argv[i][0] == '-') {
 354                         for (j = 1; argv[i][j] != 0; j++) {
 355                                 int ch;
 356
 357                                 ch = argv[i][j];
 358                                 switch (ch) {
 359                                 case 'a':
 360                                         howto |= RB_ASKNAME;
 361                                         break;
 362                                 case 'd':
 363                                         howto |= RB_KDB;
 364                                         break;
 365                                 case 'D':
 366                                         howto |= RB_MULTIPLE;
 367                                         break;
 368                                 case 'h':
 369                                         howto |= RB_SERIAL;
 370                                         break;
 371                                 case 'm':
 372                                         howto |= RB_MUTE;
 373                                         break;
 374                                 case 'p':
 375                                         howto |= RB_PAUSE;
 376                                         break;
 377                                 case 'P':
 378                                         if (!has_kbd)
 379                                                 howto |= RB_SERIAL | RB_MULTIPLE;
 380                                         break;
 381                                 case 'r':
 382                                         howto |= RB_DFLTROOT;
 383                                         break;
 384                                 case 's':
 385                                         howto |= RB_SINGLE;
 386                                         break;
 387                                 case 'S':
 388                                         if (argv[i][j + 1] == 0) {
 389                                                 if (i + 1 == argc) {
 390                                                         setenv("comconsole_speed", "115200", 1);
 391                                                 } else {
 392                                                         cpy16to8(&argv[i + 1][0], var,
 393                                                             sizeof(var));
 394                                                         setenv("comconsole_speedspeed", var, 1);
 395                                                 }
 396                                                 i++;
 397                                                 break;
 398                                         } else {
 399                                                 cpy16to8(&argv[i][j + 1], var,
 400                                                     sizeof(var));
 401                                                 setenv("comconsole_speed", var, 1);
 402                                                 break;
 403                                         }
 404                                 case 'v':
 405                                         howto |= RB_VERBOSE;
 406                                         break;
 407                                 }
 408                         }
 409                 } else {
 410                         vargood = 0;
 411                         for (j = 0; argv[i][j] != 0; j++) {
 412                                 if (j == sizeof(var)) {
 413                                         vargood = 0;
 414                                         break;
 415                                 }
 416                                 if (j > 0 && argv[i][j] == '=')
 417                                         vargood = 1;
 418                                 var[j] = (char)argv[i][j];
 419                         }
 420                         if (vargood) {
 421                                 var[j] = 0;
 422                                 putenv(var);
 423                         }
 424                 }
 425         }
 426         for (i = 0; howto_names[i].ev != NULL; i++)
 427                 if (howto & howto_names[i].mask)
 428                         setenv(howto_names[i].ev, "YES", 1);
 429         if (howto & RB_MULTIPLE) {
 430                 if (howto & RB_SERIAL)
 431                         setenv("console", "comconsole efi" , 1);
 432                 else
 433                         setenv("console", "efi comconsole" , 1);
 434         } else if (howto & RB_SERIAL) {
 435                 setenv("console", "comconsole" , 1);
 436         }
 437
 438         if (efi_copy_init()) {
 439                 printf("failed to allocate staging area\n");
 440                 return (EFI_BUFFER_TOO_SMALL);
 441         }
 442
 443         /*
 444          * March through the device switch probing for things.
 445          */
 446         for (i = 0; devsw[i] != NULL; i++)
 447                 if (devsw[i]->dv_init != NULL)
 448                         (devsw[i]->dv_init)();
 449
 450         /* Get our loaded image protocol interface structure. */
 451         BS->HandleProtocol(IH, &imgid, (VOID**)&img);
 452
 453         printf("Command line arguments:");
 454         for (i = 0; i < argc; i++)
 455                 printf(" %S", argv[i]);
 456         printf("\n");
 457
 458         printf("Image base: 0x%lx\n", (u_long)img->ImageBase);
 459         printf("EFI version: %d.%02d\n", ST->Hdr.Revision >> 16,
 460             ST->Hdr.Revision & 0xffff);
 461         printf("EFI Firmware: %S (rev %d.%02d)\n", ST->FirmwareVendor,
 462             ST->FirmwareRevision >> 16, ST->FirmwareRevision & 0xffff);
 463
 464         printf("\n%s", bootprog_info);
 465
 466         /*
 467          * Disable the watchdog timer. By default the boot manager sets
 468          * the timer to 5 minutes before invoking a boot option. If we
 469          * want to return to the boot manager, we have to disable the
 470          * watchdog timer and since we're an interactive program, we don't
 471          * want to wait until the user types "quit". The timer may have
 472          * fired by then. We don't care if this fails. It does not prevent
 473          * normal functioning in any way...
 474          */
 475         BS->SetWatchdogTimer(0, 0, 0, NULL);
 476
 477         if (find_currdev(img) != 0)
 478                 return (EFI_NOT_FOUND);
 479
 480         efi_init_environment();
 481         setenv("LINES", "24", 1);       /* optional */
 482
 483         for (k = 0; k < ST->NumberOfTableEntries; k++) {
 484                 guid = &ST->ConfigurationTable[k].VendorGuid;
 485                 if (!memcmp(guid, &smbios, sizeof(EFI_GUID))) {
 486                         snprintf(buf, sizeof(buf), "%p",
 487                             ST->ConfigurationTable[k].VendorTable);
 488                         setenv("hint.smbios.0.mem", buf, 1);
 489                         smbios_detect(ST->ConfigurationTable[k].VendorTable);
 490                         break;
 491                 }
 492         }
 493
 494         interact(NULL);                 /* doesn't return */
 495
 496         return (EFI_SUCCESS);           /* keep compiler happy */
 497 }
 498
 499 COMMAND_SET(reboot, "reboot", "reboot the system", command_reboot);
 500
 501 static int
 502 command_reboot(int argc, char *argv[])
 503 {
 504         int i;
 505
 506         for (i = 0; devsw[i] != NULL; ++i)
 507                 if (devsw[i]->dv_cleanup != NULL)
 508                         (devsw[i]->dv_cleanup)();
 509
 510         RS->ResetSystem(EfiResetCold, EFI_SUCCESS, 23,
 511             (CHAR16 *)"Reboot from the loader");
 512
 513         /* NOTREACHED */
 514         return (CMD_ERROR);
 515 }
 516
 517 COMMAND_SET(quit, "quit", "exit the loader", command_quit);
 518
 519 static int
 520 command_quit(int argc, char *argv[])
 521 {
 522         exit(0);
 523         return (CMD_OK);
 524 }
 525
 526 COMMAND_SET(memmap, "memmap", "print memory map", command_memmap);
 527
 528 static int
 529 command_memmap(int argc, char *argv[])
 530 {
 531         UINTN sz;
 532         EFI_MEMORY_DESCRIPTOR *map, *p;
 533         UINTN key, dsz;
 534         UINT32 dver;
 535         EFI_STATUS status;
 536         int i, ndesc;
 537         char line[80];
 538         static char *types[] = {
 539             "Reserved",
 540             "LoaderCode",
 541             "LoaderData",
 542             "BootServicesCode",
 543             "BootServicesData",
 544             "RuntimeServicesCode",
 545             "RuntimeServicesData",
 546             "ConventionalMemory",
 547             "UnusableMemory",
 548             "ACPIReclaimMemory",
 549             "ACPIMemoryNVS",
 550             "MemoryMappedIO",
 551             "MemoryMappedIOPortSpace",
 552             "PalCode"
 553         };
 554
 555         sz = 0;
 556         status = BS->GetMemoryMap(&sz, 0, &key, &dsz, &dver);
 557         if (status != EFI_BUFFER_TOO_SMALL) {
 558                 printf("Can't determine memory map size\n");
 559                 return (CMD_ERROR);
 560         }
 561         map = malloc(sz);
 562         status = BS->GetMemoryMap(&sz, map, &key, &dsz, &dver);
 563         if (EFI_ERROR(status)) {
 564                 printf("Can't read memory map\n");
 565                 return (CMD_ERROR);
 566         }
 567
 568         ndesc = sz / dsz;
 569         snprintf(line, sizeof(line), "%23s %12s %12s %8s %4s\n",
 570             "Type", "Physical", "Virtual", "#Pages", "Attr");
 571         pager_open();
 572         if (pager_output(line)) {
 573                 pager_close();
 574                 return (CMD_OK);
 575         }
 576
 577         for (i = 0, p = map; i < ndesc;
 578              i++, p = NextMemoryDescriptor(p, dsz)) {
 579                 printf("%23s %012jx %012jx %08jx ", types[p->Type],
 580                     (uintmax_t)p->PhysicalStart, (uintmax_t)p->VirtualStart,
 581                     (uintmax_t)p->NumberOfPages);
 582                 if (p->Attribute & EFI_MEMORY_UC)
 583                         printf("UC ");
 584                 if (p->Attribute & EFI_MEMORY_WC)
 585                         printf("WC ");
 586                 if (p->Attribute & EFI_MEMORY_WT)
 587                         printf("WT ");
 588                 if (p->Attribute & EFI_MEMORY_WB)
 589                         printf("WB ");
 590                 if (p->Attribute & EFI_MEMORY_UCE)
 591                         printf("UCE ");
 592                 if (p->Attribute & EFI_MEMORY_WP)
 593                         printf("WP ");
 594                 if (p->Attribute & EFI_MEMORY_RP)
 595                         printf("RP ");
 596                 if (p->Attribute & EFI_MEMORY_XP)
 597                         printf("XP ");
 598                 if (pager_output("\n"))
 599                         break;
 600         }
 601
 602         pager_close();
 603         return (CMD_OK);
 604 }
 605
 606 COMMAND_SET(configuration, "configuration", "print configuration tables",
 607     command_configuration);
 608
 609 static const char *
 610 guid_to_string(EFI_GUID *guid)
 611 {
 612         static char buf[40];
 613
 614         sprintf(buf, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
 615             guid->Data1, guid->Data2, guid->Data3, guid->Data4[0],
 616             guid->Data4[1], guid->Data4[2], guid->Data4[3], guid->Data4[4],
 617             guid->Data4[5], guid->Data4[6], guid->Data4[7]);
 618         return (buf);
 619 }
 620
 621 static int
 622 command_configuration(int argc, char *argv[])
 623 {
 624         char line[80];
 625         UINTN i;
 626
 627         snprintf(line, sizeof(line), "NumberOfTableEntries=%lu\n",
 628                 (unsigned long)ST->NumberOfTableEntries);
 629         pager_open();
 630         if (pager_output(line)) {
 631                 pager_close();
 632                 return (CMD_OK);
 633         }
 634
 635         for (i = 0; i < ST->NumberOfTableEntries; i++) {
 636                 EFI_GUID *guid;
 637
 638                 printf("  ");
 639                 guid = &ST->ConfigurationTable[i].VendorGuid;
 640                 if (!memcmp(guid, &mps, sizeof(EFI_GUID)))
 641                         printf("MPS Table");
 642                 else if (!memcmp(guid, &acpi, sizeof(EFI_GUID)))
 643                         printf("ACPI Table");
 644                 else if (!memcmp(guid, &acpi20, sizeof(EFI_GUID)))
 645                         printf("ACPI 2.0 Table");
 646                 else if (!memcmp(guid, &smbios, sizeof(EFI_GUID)))
 647                         printf("SMBIOS Table %p",
 648                             ST->ConfigurationTable[i].VendorTable);
 649                 else if (!memcmp(guid, &dxe, sizeof(EFI_GUID)))
 650                         printf("DXE Table");
 651                 else if (!memcmp(guid, &hoblist, sizeof(EFI_GUID)))
 652                         printf("HOB List Table");
 653                 else if (!memcmp(guid, &memtype, sizeof(EFI_GUID)))
 654                         printf("Memory Type Information Table");
 655                 else if (!memcmp(guid, &debugimg, sizeof(EFI_GUID)))
 656                         printf("Debug Image Info Table");
 657                 else if (!memcmp(guid, &fdtdtb, sizeof(EFI_GUID)))
 658                         printf("FDT Table");
 659                 else
 660                         printf("Unknown Table (%s)", guid_to_string(guid));
 661                 snprintf(line, sizeof(line), " at %p\n",
 662                     ST->ConfigurationTable[i].VendorTable);
 663                 if (pager_output(line))
 664                         break;
 665         }
 666
 667         pager_close();
 668         return (CMD_OK);
 669 }
 670
 671
 672 COMMAND_SET(mode, "mode", "change or display EFI text modes", command_mode);
 673
 674 static int
 675 command_mode(int argc, char *argv[])
 676 {
 677         UINTN cols, rows;
 678         unsigned int mode;
 679         int i;
 680         char *cp;
 681         char rowenv[8];
 682         EFI_STATUS status;
 683         SIMPLE_TEXT_OUTPUT_INTERFACE *conout;
 684         extern void HO(void);
 685
 686         conout = ST->ConOut;
 687
 688         if (argc > 1) {
 689                 mode = strtol(argv[1], &cp, 0);
 690                 if (cp[0] != '\0') {
 691                         printf("Invalid mode\n");
 692                         return (CMD_ERROR);
 693                 }
 694                 status = conout->QueryMode(conout, mode, &cols, &rows);
 695                 if (EFI_ERROR(status)) {
 696                         printf("invalid mode %d\n", mode);
 697                         return (CMD_ERROR);
 698                 }
 699                 status = conout->SetMode(conout, mode);
 700                 if (EFI_ERROR(status)) {
 701                         printf("couldn't set mode %d\n", mode);
 702                         return (CMD_ERROR);
 703                 }
 704                 sprintf(rowenv, "%u", (unsigned)rows);
 705                 setenv("LINES", rowenv, 1);
 706                 HO();           /* set cursor */
 707                 return (CMD_OK);
 708         }
 709
 710         printf("Current mode: %d\n", conout->Mode->Mode);
 711         for (i = 0; i <= conout->Mode->MaxMode; i++) {
 712                 status = conout->QueryMode(conout, i, &cols, &rows);
 713                 if (EFI_ERROR(status))
 714                         continue;
 715                 printf("Mode %d: %u columns, %u rows\n", i, (unsigned)cols,
 716                     (unsigned)rows);
 717         }
 718
 719         if (i != 0)
 720                 printf("Select a mode with the command \"mode <number>\"\n");
 721
 722         return (CMD_OK);
 723 }
 724
 725 #ifdef EFI_ZFS_BOOT
 726 COMMAND_SET(lszfs, "lszfs", "list child datasets of a zfs dataset",
 727     command_lszfs);
 728
 729 static int
 730 command_lszfs(int argc, char *argv[])
 731 {
 732         int err;
 733
 734         if (argc != 2) {
 735                 command_errmsg = "wrong number of arguments";
 736                 return (CMD_ERROR);
 737         }
 738
 739         err = zfs_list(argv[1]);
 740         if (err != 0) {
 741                 command_errmsg = strerror(err);
 742                 return (CMD_ERROR);
 743         }
 744         return (CMD_OK);
 745 }
 746
 747 COMMAND_SET(reloadbe, "reloadbe", "refresh the list of ZFS Boot Environments",
 748             command_reloadbe);
 749
 750 static int
 751 command_reloadbe(int argc, char *argv[])
 752 {
 753         int err;
 754         char *root;
 755
 756         if (argc > 2) {
 757                 command_errmsg = "wrong number of arguments";
 758                 return (CMD_ERROR);
 759         }
 760
 761         if (argc == 2) {
 762                 err = zfs_bootenv(argv[1]);
 763         } else {
 764                 root = getenv("zfs_be_root");
 765                 if (root == NULL) {
 766                         return (CMD_OK);
 767                 }
 768                 err = zfs_bootenv(root);
 769         }
 770
 771         if (err != 0) {
 772                 command_errmsg = strerror(err);
 773                 return (CMD_ERROR);
 774         }
 775
 776         return (CMD_OK);
 777 }
 778 #endif
 779
 780 #ifdef LOADER_FDT_SUPPORT
 781 extern int command_fdt_internal(int argc, char *argv[]);
 782
 783 /*
 784  * Since proper fdt command handling function is defined in fdt_loader_cmd.c,
 785  * and declaring it as extern is in contradiction with COMMAND_SET() macro
 786  * (which uses static pointer), we're defining wrapper function, which
 787  * calls the proper fdt handling routine.
 788  */
 789 static int
 790 command_fdt(int argc, char *argv[])
 791 {
 792
 793         return (command_fdt_internal(argc, argv));
 794 }
 795
 796 COMMAND_SET(fdt, "fdt", "flattened device tree handling", command_fdt);
 797 #endif
 798
 799 #ifdef EFI_ZFS_BOOT
 800 static void
 801 efi_zfs_probe(void)
 802 {
 803         pdinfo_list_t *hdi;
 804         pdinfo_t *hd, *pd = NULL;
 805         EFI_GUID imgid = LOADED_IMAGE_PROTOCOL;
 806         EFI_LOADED_IMAGE *img;
 807         char devname[SPECNAMELEN + 1];
 808
 809         BS->HandleProtocol(IH, &imgid, (VOID**)&img);
 810         hdi = efiblk_get_pdinfo_list(&efipart_hddev);
 811
 812         /*
 813          * Find the handle for the boot device. The boot1 did find the
 814          * device with loader binary, now we need to search for the
 815          * same device and if it is part of the zfs pool, we record the
 816          * pool GUID for currdev setup.
 817          */
 818         STAILQ_FOREACH(hd, hdi, pd_link) {
 819                 STAILQ_FOREACH(pd, &hd->pd_part, pd_link) {
 820
 821                         snprintf(devname, sizeof(devname), "%s%dp%d:",
 822                             efipart_hddev.dv_name, hd->pd_unit, pd->pd_unit);
 823                         if (pd->pd_handle == img->DeviceHandle)
 824                                 (void) zfs_probe_dev(devname, &pool_guid);
 825                         else
 826                                 (void) zfs_probe_dev(devname, NULL);
 827                 }
 828         }
 829 }
 830
 831 uint64_t
 832 ldi_get_size(void *priv)
 833 {
 834         int fd = (uintptr_t) priv;
 835         uint64_t size;
 836
 837         ioctl(fd, DIOCGMEDIASIZE, &size);
 838         return (size);
 839 }
 840 #endif