1/*- 2 * Copyright (c) 2008-2010 Rui Paulo 3 * Copyright (c) 2006 Marcel Moolenaar 4 * All rights reserved. 5 * 6 * Copyright (c) 2016-2019 Netflix, Inc. written by M. Warner Losh 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30#include <sys/cdefs.h> 31__FBSDID("$FreeBSD$"); 32 33#include <stand.h> 34 35#include <sys/disk.h> 36#include <sys/param.h> 37#include <sys/reboot.h> 38#include <sys/boot.h> 39#ifdef EFI_ZFS_BOOT 40#include <sys/zfs_bootenv.h> 41#endif 42#include <paths.h> 43#include <netinet/in.h> 44#include <netinet/in_systm.h> 45#include <stdint.h> 46#include <string.h> 47#include <setjmp.h> 48#include <disk.h> 49#include <dev_net.h> 50#include <net.h> 51 52#include <efi.h> 53#include <efilib.h> 54#include <efichar.h> 55 56#include <uuid.h> 57 58#include <bootstrap.h> 59#include <smbios.h> 60 61#include "efizfs.h" 62 63#include "loader_efi.h" 64 65struct arch_switch archsw; /* MI/MD interface boundary */ 66 67EFI_GUID acpi = ACPI_TABLE_GUID; 68EFI_GUID acpi20 = ACPI_20_TABLE_GUID; 69EFI_GUID devid = DEVICE_PATH_PROTOCOL; 70EFI_GUID imgid = LOADED_IMAGE_PROTOCOL; 71EFI_GUID mps = MPS_TABLE_GUID; 72EFI_GUID netid = EFI_SIMPLE_NETWORK_PROTOCOL; 73EFI_GUID smbios = SMBIOS_TABLE_GUID; 74EFI_GUID smbios3 = SMBIOS3_TABLE_GUID; 75EFI_GUID dxe = DXE_SERVICES_TABLE_GUID; 76EFI_GUID hoblist = HOB_LIST_TABLE_GUID; 77EFI_GUID lzmadecomp = LZMA_DECOMPRESSION_GUID; 78EFI_GUID mpcore = ARM_MP_CORE_INFO_TABLE_GUID; 79EFI_GUID esrt = ESRT_TABLE_GUID; 80EFI_GUID memtype = MEMORY_TYPE_INFORMATION_TABLE_GUID; 81EFI_GUID debugimg = DEBUG_IMAGE_INFO_TABLE_GUID; 82EFI_GUID fdtdtb = FDT_TABLE_GUID; 83EFI_GUID inputid = SIMPLE_TEXT_INPUT_PROTOCOL; 84 85/* 86 * Number of seconds to wait for a keystroke before exiting with failure 87 * in the event no currdev is found. -2 means always break, -1 means 88 * never break, 0 means poll once and then reboot, > 0 means wait for 89 * that many seconds. "fail_timeout" can be set in the environment as 90 * well. 91 */ 92static int fail_timeout = 5; 93 94/* 95 * Current boot variable 96 */ 97UINT16 boot_current; 98 99/* 100 * Image that we booted from. 101 */ 102EFI_LOADED_IMAGE *boot_img; 103 104static bool 105has_keyboard(void) 106{ 107 EFI_STATUS status; 108 EFI_DEVICE_PATH *path; 109 EFI_HANDLE *hin, *hin_end, *walker; 110 UINTN sz; 111 bool retval = false; 112 113 /* 114 * Find all the handles that support the SIMPLE_TEXT_INPUT_PROTOCOL and 115 * do the typical dance to get the right sized buffer. 116 */ 117 sz = 0; 118 hin = NULL; 119 status = BS->LocateHandle(ByProtocol, &inputid, 0, &sz, 0); 120 if (status == EFI_BUFFER_TOO_SMALL) { 121 hin = (EFI_HANDLE *)malloc(sz); 122 status = BS->LocateHandle(ByProtocol, &inputid, 0, &sz, 123 hin); 124 if (EFI_ERROR(status)) 125 free(hin); 126 } 127 if (EFI_ERROR(status)) 128 return retval; 129 130 /* 131 * Look at each of the handles. If it supports the device path protocol, 132 * use it to get the device path for this handle. Then see if that 133 * device path matches either the USB device path for keyboards or the 134 * legacy device path for keyboards. 135 */ 136 hin_end = &hin[sz / sizeof(*hin)]; 137 for (walker = hin; walker < hin_end; walker++) { 138 status = OpenProtocolByHandle(*walker, &devid, (void **)&path); 139 if (EFI_ERROR(status)) 140 continue; 141 142 while (!IsDevicePathEnd(path)) { 143 /* 144 * Check for the ACPI keyboard node. All PNP3xx nodes 145 * are keyboards of different flavors. Note: It is 146 * unclear of there's always a keyboard node when 147 * there's a keyboard controller, or if there's only one 148 * when a keyboard is detected at boot. 149 */ 150 if (DevicePathType(path) == ACPI_DEVICE_PATH && 151 (DevicePathSubType(path) == ACPI_DP || 152 DevicePathSubType(path) == ACPI_EXTENDED_DP)) { 153 ACPI_HID_DEVICE_PATH *acpi; 154 155 acpi = (ACPI_HID_DEVICE_PATH *)(void *)path; 156 if ((EISA_ID_TO_NUM(acpi->HID) & 0xff00) == 0x300 && 157 (acpi->HID & 0xffff) == PNP_EISA_ID_CONST) { 158 retval = true; 159 goto out; 160 } 161 /* 162 * Check for USB keyboard node, if present. Unlike a 163 * PS/2 keyboard, these definitely only appear when 164 * connected to the system. 165 */ 166 } else if (DevicePathType(path) == MESSAGING_DEVICE_PATH && 167 DevicePathSubType(path) == MSG_USB_CLASS_DP) { 168 USB_CLASS_DEVICE_PATH *usb; 169 170 usb = (USB_CLASS_DEVICE_PATH *)(void *)path; 171 if (usb->DeviceClass == 3 && /* HID */ 172 usb->DeviceSubClass == 1 && /* Boot devices */ 173 usb->DeviceProtocol == 1) { /* Boot keyboards */ 174 retval = true; 175 goto out; 176 } 177 } 178 path = NextDevicePathNode(path); 179 } 180 } 181out: 182 free(hin); 183 return retval; 184} 185 186static void 187set_currdev(const char *devname) 188{ 189 190 /* 191 * Don't execute hooks here; we may need to try setting these more than 192 * once here if we're probing for the ZFS pool we're supposed to boot. 193 * The currdev hook is intended to just validate user input anyways, 194 * while the loaddev hook makes it immutable once we've determined what 195 * the proper currdev is. 196 */ 197 env_setenv("currdev", EV_VOLATILE | EV_NOHOOK, devname, efi_setcurrdev, 198 env_nounset); 199 env_setenv("loaddev", EV_VOLATILE | EV_NOHOOK, devname, env_noset, 200 env_nounset); 201} 202 203static void 204set_currdev_devdesc(struct devdesc *currdev) 205{ 206 const char *devname; 207 208 devname = efi_fmtdev(currdev); 209 printf("Setting currdev to %s\n", devname); 210 set_currdev(devname); 211} 212 213static void 214set_currdev_devsw(struct devsw *dev, int unit) 215{ 216 struct devdesc currdev; 217 218 currdev.d_dev = dev; 219 currdev.d_unit = unit; 220 221 set_currdev_devdesc(&currdev); 222} 223 224static void 225set_currdev_pdinfo(pdinfo_t *dp) 226{ 227 228 /* 229 * Disks are special: they have partitions. if the parent 230 * pointer is non-null, we're a partition not a full disk 231 * and we need to adjust currdev appropriately. 232 */ 233 if (dp->pd_devsw->dv_type == DEVT_DISK) { 234 struct disk_devdesc currdev; 235 236 currdev.dd.d_dev = dp->pd_devsw; 237 if (dp->pd_parent == NULL) { 238 currdev.dd.d_unit = dp->pd_unit; 239 currdev.d_slice = D_SLICENONE; 240 currdev.d_partition = D_PARTNONE; 241 } else { 242 currdev.dd.d_unit = dp->pd_parent->pd_unit; 243 currdev.d_slice = dp->pd_unit; 244 currdev.d_partition = D_PARTISGPT; /* XXX Assumes GPT */ 245 } 246 set_currdev_devdesc((struct devdesc *)&currdev); 247 } else { 248 set_currdev_devsw(dp->pd_devsw, dp->pd_unit); 249 } 250} 251 252static bool 253sanity_check_currdev(void) 254{ 255 struct stat st; 256 257 return (stat(PATH_DEFAULTS_LOADER_CONF, &st) == 0 || 258#ifdef PATH_BOOTABLE_TOKEN 259 stat(PATH_BOOTABLE_TOKEN, &st) == 0 || /* non-standard layout */ 260#endif 261 stat(PATH_KERNEL, &st) == 0); 262} 263 264#ifdef EFI_ZFS_BOOT 265static bool 266probe_zfs_currdev(uint64_t guid) 267{ 268 char *devname; 269 struct zfs_devdesc currdev; 270 char *buf = NULL; 271 bool rv; 272 273 currdev.dd.d_dev = &zfs_dev; 274 currdev.dd.d_unit = 0; 275 currdev.pool_guid = guid; 276 currdev.root_guid = 0; 277 set_currdev_devdesc((struct devdesc *)&currdev); 278 devname = efi_fmtdev(&currdev); 279 init_zfs_boot_options(devname); 280 281 rv = sanity_check_currdev(); 282 if (rv) { 283 buf = malloc(VDEV_PAD_SIZE); 284 if (buf != NULL) { 285 if (zfs_get_bootonce(&currdev, OS_BOOTONCE, buf, 286 VDEV_PAD_SIZE) == 0) { 287 printf("zfs bootonce: %s\n", buf); 288 set_currdev(buf); 289 setenv("zfs-bootonce", buf, 1); 290 } 291 free(buf); 292 (void) zfs_attach_nvstore(&currdev); 293 } 294 } 295 return (rv); 296} 297#endif 298 299static bool 300try_as_currdev(pdinfo_t *hd, pdinfo_t *pp) 301{ 302 uint64_t guid; 303 304#ifdef EFI_ZFS_BOOT 305 /* 306 * If there's a zpool on this device, try it as a ZFS 307 * filesystem, which has somewhat different setup than all 308 * other types of fs due to imperfect loader integration. 309 * This all stems from ZFS being both a device (zpool) and 310 * a filesystem, plus the boot env feature. 311 */ 312 if (efizfs_get_guid_by_handle(pp->pd_handle, &guid)) 313 return (probe_zfs_currdev(guid)); 314#endif 315 /* 316 * All other filesystems just need the pdinfo 317 * initialized in the standard way. 318 */ 319 set_currdev_pdinfo(pp); 320 return (sanity_check_currdev()); 321} 322 323/* 324 * Sometimes we get filenames that are all upper case 325 * and/or have backslashes in them. Filter all this out 326 * if it looks like we need to do so. 327 */ 328static void 329fix_dosisms(char *p) 330{ 331 while (*p) { 332 if (isupper(*p)) 333 *p = tolower(*p); 334 else if (*p == '\\') 335 *p = '/'; 336 p++; 337 } 338} 339 340#define SIZE(dp, edp) (size_t)((intptr_t)(void *)edp - (intptr_t)(void *)dp) 341 342enum { BOOT_INFO_OK = 0, BAD_CHOICE = 1, NOT_SPECIFIC = 2 }; 343static int 344match_boot_info(char *boot_info, size_t bisz) 345{ 346 uint32_t attr; 347 uint16_t fplen; 348 size_t len; 349 char *walker, *ep; 350 EFI_DEVICE_PATH *dp, *edp, *first_dp, *last_dp; 351 pdinfo_t *pp; 352 CHAR16 *descr; 353 char *kernel = NULL; 354 FILEPATH_DEVICE_PATH *fp; 355 struct stat st; 356 CHAR16 *text; 357 358 /* 359 * FreeBSD encodes its boot loading path into the boot loader 360 * BootXXXX variable. We look for the last one in the path 361 * and use that to load the kernel. However, if we only find 362 * one DEVICE_PATH, then there's nothing specific and we should 363 * fall back. 364 * 365 * In an ideal world, we'd look at the image handle we were 366 * passed, match up with the loader we are and then return the 367 * next one in the path. This would be most flexible and cover 368 * many chain booting scenarios where you need to use this 369 * boot loader to get to the next boot loader. However, that 370 * doesn't work. We rarely have the path to the image booted 371 * (just the device) so we can't count on that. So, we do the 372 * next best thing: we look through the device path(s) passed 373 * in the BootXXXX variable. If there's only one, we return 374 * NOT_SPECIFIC. Otherwise, we look at the last one and try to 375 * load that. If we can, we return BOOT_INFO_OK. Otherwise we 376 * return BAD_CHOICE for the caller to sort out. 377 */ 378 if (bisz < sizeof(attr) + sizeof(fplen) + sizeof(CHAR16)) 379 return NOT_SPECIFIC; 380 walker = boot_info; 381 ep = walker + bisz; 382 memcpy(&attr, walker, sizeof(attr)); 383 walker += sizeof(attr); 384 memcpy(&fplen, walker, sizeof(fplen)); 385 walker += sizeof(fplen); 386 descr = (CHAR16 *)(intptr_t)walker; 387 len = ucs2len(descr); 388 walker += (len + 1) * sizeof(CHAR16); 389 last_dp = first_dp = dp = (EFI_DEVICE_PATH *)walker; 390 edp = (EFI_DEVICE_PATH *)(walker + fplen); 391 if ((char *)edp > ep) 392 return NOT_SPECIFIC; 393 while (dp < edp && SIZE(dp, edp) > sizeof(EFI_DEVICE_PATH)) { 394 text = efi_devpath_name(dp); 395 if (text != NULL) { 396 printf(" BootInfo Path: %S\n", text); 397 efi_free_devpath_name(text); 398 } 399 last_dp = dp; 400 dp = (EFI_DEVICE_PATH *)((char *)dp + efi_devpath_length(dp)); 401 } 402 403 /* 404 * If there's only one item in the list, then nothing was 405 * specified. Or if the last path doesn't have a media 406 * path in it. Those show up as various VenHw() nodes 407 * which are basically opaque to us. Don't count those 408 * as something specifc. 409 */ 410 if (last_dp == first_dp) { 411 printf("Ignoring Boot%04x: Only one DP found\n", boot_current); 412 return NOT_SPECIFIC; 413 } 414 if (efi_devpath_to_media_path(last_dp) == NULL) { 415 printf("Ignoring Boot%04x: No Media Path\n", boot_current); 416 return NOT_SPECIFIC; 417 } 418 419 /* 420 * OK. At this point we either have a good path or a bad one. 421 * Let's check. 422 */ 423 pp = efiblk_get_pdinfo_by_device_path(last_dp); 424 if (pp == NULL) { 425 printf("Ignoring Boot%04x: Device Path not found\n", boot_current); 426 return BAD_CHOICE; 427 } 428 set_currdev_pdinfo(pp); 429 if (!sanity_check_currdev()) { 430 printf("Ignoring Boot%04x: sanity check failed\n", boot_current); 431 return BAD_CHOICE; 432 } 433 434 /* 435 * OK. We've found a device that matches, next we need to check the last 436 * component of the path. If it's a file, then we set the default kernel 437 * to that. Otherwise, just use this as the default root. 438 * 439 * Reminder: we're running very early, before we've parsed the defaults 440 * file, so we may need to have a hack override. 441 */ 442 dp = efi_devpath_last_node(last_dp); 443 if (DevicePathType(dp) != MEDIA_DEVICE_PATH || 444 DevicePathSubType(dp) != MEDIA_FILEPATH_DP) { 445 printf("Using Boot%04x for root partition\n", boot_current); 446 return (BOOT_INFO_OK); /* use currdir, default kernel */ 447 } 448 fp = (FILEPATH_DEVICE_PATH *)dp; 449 ucs2_to_utf8(fp->PathName, &kernel); 450 if (kernel == NULL) { 451 printf("Not using Boot%04x: can't decode kernel\n", boot_current); 452 return (BAD_CHOICE); 453 } 454 if (*kernel == '\\' || isupper(*kernel)) 455 fix_dosisms(kernel); 456 if (stat(kernel, &st) != 0) { 457 free(kernel); 458 printf("Not using Boot%04x: can't find %s\n", boot_current, 459 kernel); 460 return (BAD_CHOICE); 461 } 462 setenv("kernel", kernel, 1); 463 free(kernel); 464 text = efi_devpath_name(last_dp); 465 if (text) { 466 printf("Using Boot%04x %S + %s\n", boot_current, text, 467 kernel); 468 efi_free_devpath_name(text); 469 } 470 471 return (BOOT_INFO_OK); 472} 473 474/* 475 * Look at the passed-in boot_info, if any. If we find it then we need 476 * to see if we can find ourselves in the boot chain. If we can, and 477 * there's another specified thing to boot next, assume that the file 478 * is loaded from / and use that for the root filesystem. If can't 479 * find the specified thing, we must fail the boot. If we're last on 480 * the list, then we fallback to looking for the first available / 481 * candidate (ZFS, if there's a bootable zpool, otherwise a UFS 482 * partition that has either /boot/defaults/loader.conf on it or 483 * /boot/kernel/kernel (the default kernel) that we can use. 484 * 485 * We always fail if we can't find the right thing. However, as 486 * a concession to buggy UEFI implementations, like u-boot, if 487 * we have determined that the host is violating the UEFI boot 488 * manager protocol, we'll signal the rest of the program that 489 * a drop to the OK boot loader prompt is possible. 490 */ 491static int 492find_currdev(bool do_bootmgr, bool is_last, 493 char *boot_info, size_t boot_info_sz) 494{ 495 pdinfo_t *dp, *pp; 496 EFI_DEVICE_PATH *devpath, *copy; 497 EFI_HANDLE h; 498 CHAR16 *text; 499 struct devsw *dev; 500 int unit; 501 uint64_t extra; 502 int rv; 503 char *rootdev; 504 505 /* 506 * First choice: if rootdev is already set, use that, even if 507 * it's wrong. 508 */ 509 rootdev = getenv("rootdev"); 510 if (rootdev != NULL) { 511 printf(" Setting currdev to configured rootdev %s\n", 512 rootdev); 513 set_currdev(rootdev); 514 return (0); 515 } 516 517 /* 518 * Second choice: If uefi_rootdev is set, translate that UEFI device 519 * path to the loader's internal name and use that. 520 */ 521 do { 522 rootdev = getenv("uefi_rootdev"); 523 if (rootdev == NULL) 524 break; 525 devpath = efi_name_to_devpath(rootdev); 526 if (devpath == NULL) 527 break; 528 dp = efiblk_get_pdinfo_by_device_path(devpath); 529 efi_devpath_free(devpath); 530 if (dp == NULL) 531 break; 532 printf(" Setting currdev to UEFI path %s\n", 533 rootdev); 534 set_currdev_pdinfo(dp); 535 return (0); 536 } while (0); 537 538 /* 539 * Third choice: If we can find out image boot_info, and there's 540 * a follow-on boot image in that boot_info, use that. In this 541 * case root will be the partition specified in that image and 542 * we'll load the kernel specified by the file path. Should there 543 * not be a filepath, we use the default. This filepath overrides 544 * loader.conf. 545 */ 546 if (do_bootmgr) { 547 rv = match_boot_info(boot_info, boot_info_sz); 548 switch (rv) { 549 case BOOT_INFO_OK: /* We found it */ 550 return (0); 551 case BAD_CHOICE: /* specified file not found -> error */ 552 /* XXX do we want to have an escape hatch for last in boot order? */ 553 return (ENOENT); 554 } /* Nothing specified, try normal match */ 555 } 556 557#ifdef EFI_ZFS_BOOT 558 /* 559 * Did efi_zfs_probe() detect the boot pool? If so, use the zpool 560 * it found, if it's sane. ZFS is the only thing that looks for 561 * disks and pools to boot. This may change in the future, however, 562 * if we allow specifying which pool to boot from via UEFI variables 563 * rather than the bootenv stuff that FreeBSD uses today. 564 */ 565 if (pool_guid != 0) { 566 printf("Trying ZFS pool\n"); 567 if (probe_zfs_currdev(pool_guid)) 568 return (0); 569 } 570#endif /* EFI_ZFS_BOOT */ 571 572 /* 573 * Try to find the block device by its handle based on the 574 * image we're booting. If we can't find a sane partition, 575 * search all the other partitions of the disk. We do not 576 * search other disks because it's a violation of the UEFI 577 * boot protocol to do so. We fail and let UEFI go on to 578 * the next candidate. 579 */ 580 dp = efiblk_get_pdinfo_by_handle(boot_img->DeviceHandle); 581 if (dp != NULL) { 582 text = efi_devpath_name(dp->pd_devpath); 583 if (text != NULL) { 584 printf("Trying ESP: %S\n", text); 585 efi_free_devpath_name(text); 586 } 587 set_currdev_pdinfo(dp); 588 if (sanity_check_currdev()) 589 return (0); 590 if (dp->pd_parent != NULL) { 591 pdinfo_t *espdp = dp; 592 dp = dp->pd_parent; 593 STAILQ_FOREACH(pp, &dp->pd_part, pd_link) { 594 /* Already tried the ESP */ 595 if (espdp == pp) 596 continue; 597 /* 598 * Roll up the ZFS special case 599 * for those partitions that have 600 * zpools on them. 601 */ 602 text = efi_devpath_name(pp->pd_devpath); 603 if (text != NULL) { 604 printf("Trying: %S\n", text); 605 efi_free_devpath_name(text); 606 } 607 if (try_as_currdev(dp, pp)) 608 return (0); 609 } 610 } 611 } 612 613 /* 614 * Try the device handle from our loaded image first. If that 615 * fails, use the device path from the loaded image and see if 616 * any of the nodes in that path match one of the enumerated 617 * handles. Currently, this handle list is only for netboot. 618 */ 619 if (efi_handle_lookup(boot_img->DeviceHandle, &dev, &unit, &extra) == 0) { 620 set_currdev_devsw(dev, unit); 621 if (sanity_check_currdev()) 622 return (0); 623 } 624 625 copy = NULL; 626 devpath = efi_lookup_image_devpath(IH); 627 while (devpath != NULL) { 628 h = efi_devpath_handle(devpath); 629 if (h == NULL) 630 break; 631 632 free(copy); 633 copy = NULL; 634 635 if (efi_handle_lookup(h, &dev, &unit, &extra) == 0) { 636 set_currdev_devsw(dev, unit); 637 if (sanity_check_currdev()) 638 return (0); 639 } 640 641 devpath = efi_lookup_devpath(h); 642 if (devpath != NULL) { 643 copy = efi_devpath_trim(devpath); 644 devpath = copy; 645 } 646 } 647 free(copy); 648 649 return (ENOENT); 650} 651 652static bool 653interactive_interrupt(const char *msg) 654{ 655 time_t now, then, last; 656 657 last = 0; 658 now = then = getsecs(); 659 printf("%s\n", msg); 660 if (fail_timeout == -2) /* Always break to OK */ 661 return (true); 662 if (fail_timeout == -1) /* Never break to OK */ 663 return (false); 664 do { 665 if (last != now) { 666 printf("press any key to interrupt reboot in %d seconds\r", 667 fail_timeout - (int)(now - then)); 668 last = now; 669 } 670 671 /* XXX no pause or timeout wait for char */ 672 if (ischar()) 673 return (true); 674 now = getsecs(); 675 } while (now - then < fail_timeout); 676 return (false); 677} 678 679static int 680parse_args(int argc, CHAR16 *argv[]) 681{ 682 int i, j, howto; 683 bool vargood; 684 char var[128]; 685 686 /* 687 * Parse the args to set the console settings, etc 688 * boot1.efi passes these in, if it can read /boot.config or /boot/config 689 * or iPXE may be setup to pass these in. Or the optional argument in the 690 * boot environment was used to pass these arguments in (in which case 691 * neither /boot.config nor /boot/config are consulted). 692 * 693 * Loop through the args, and for each one that contains an '=' that is 694 * not the first character, add it to the environment. This allows 695 * loader and kernel env vars to be passed on the command line. Convert 696 * args from UCS-2 to ASCII (16 to 8 bit) as they are copied (though this 697 * method is flawed for non-ASCII characters). 698 */ 699 howto = 0; 700 for (i = 1; i < argc; i++) { 701 cpy16to8(argv[i], var, sizeof(var)); 702 howto |= boot_parse_arg(var); 703 } 704 705 return (howto); 706} 707 708static void 709setenv_int(const char *key, int val) 710{ 711 char buf[20]; 712 713 snprintf(buf, sizeof(buf), "%d", val); 714 setenv(key, buf, 1); 715} 716 717/* 718 * Parse ConOut (the list of consoles active) and see if we can find a 719 * serial port and/or a video port. It would be nice to also walk the 720 * ACPI name space to map the UID for the serial port to a port. The 721 * latter is especially hard. 722 */ 723int 724parse_uefi_con_out(void) 725{ 726 int how, rv; 727 int vid_seen = 0, com_seen = 0, seen = 0; 728 size_t sz; 729 char buf[4096], *ep; 730 EFI_DEVICE_PATH *node; 731 ACPI_HID_DEVICE_PATH *acpi; 732 UART_DEVICE_PATH *uart; 733 bool pci_pending; 734 735 how = 0; 736 sz = sizeof(buf); 737 rv = efi_global_getenv("ConOut", buf, &sz); 738 if (rv != EFI_SUCCESS) 739 rv = efi_global_getenv("ConOutDev", buf, &sz); 740 if (rv != EFI_SUCCESS) { 741 /* If we don't have any ConOut default to serial */ 742 how = RB_SERIAL; 743 goto out; 744 } 745 ep = buf + sz; 746 node = (EFI_DEVICE_PATH *)buf; 747 while ((char *)node < ep) { 748 if (IsDevicePathEndType(node)) { 749 if (pci_pending && vid_seen == 0) 750 vid_seen = ++seen; 751 } 752 pci_pending = false; 753 if (DevicePathType(node) == ACPI_DEVICE_PATH && 754 (DevicePathSubType(node) == ACPI_DP || 755 DevicePathSubType(node) == ACPI_EXTENDED_DP)) { 756 /* Check for Serial node */ 757 acpi = (void *)node; 758 if (EISA_ID_TO_NUM(acpi->HID) == 0x501) { 759 setenv_int("efi_8250_uid", acpi->UID); 760 com_seen = ++seen; 761 } 762 } else if (DevicePathType(node) == MESSAGING_DEVICE_PATH && 763 DevicePathSubType(node) == MSG_UART_DP) { 764 com_seen = ++seen; 765 uart = (void *)node; 766 setenv_int("efi_com_speed", uart->BaudRate); 767 } else if (DevicePathType(node) == ACPI_DEVICE_PATH && 768 DevicePathSubType(node) == ACPI_ADR_DP) { 769 /* Check for AcpiAdr() Node for video */ 770 vid_seen = ++seen; 771 } else if (DevicePathType(node) == HARDWARE_DEVICE_PATH && 772 DevicePathSubType(node) == HW_PCI_DP) { 773 /* 774 * Note, vmware fusion has a funky console device 775 * PciRoot(0x0)/Pci(0xf,0x0) 776 * which we can only detect at the end since we also 777 * have to cope with: 778 * PciRoot(0x0)/Pci(0x1f,0x0)/Serial(0x1) 779 * so only match it if it's last. 780 */ 781 pci_pending = true; 782 } 783 node = NextDevicePathNode(node); 784 } 785 786 /* 787 * Truth table for RB_MULTIPLE | RB_SERIAL 788 * Value Result 789 * 0 Use only video console 790 * RB_SERIAL Use only serial console 791 * RB_MULTIPLE Use both video and serial console 792 * (but video is primary so gets rc messages) 793 * both Use both video and serial console 794 * (but serial is primary so gets rc messages) 795 * 796 * Try to honor this as best we can. If only one of serial / video 797 * found, then use that. Otherwise, use the first one we found. 798 * This also implies if we found nothing, default to video. 799 */ 800 how = 0; 801 if (vid_seen && com_seen) { 802 how |= RB_MULTIPLE; 803 if (com_seen < vid_seen) 804 how |= RB_SERIAL; 805 } else if (com_seen) 806 how |= RB_SERIAL; 807out: 808 return (how); 809} 810 811void 812parse_loader_efi_config(EFI_HANDLE h, const char *env_fn) 813{ 814 pdinfo_t *dp; 815 struct stat st; 816 int fd = -1; 817 char *env = NULL; 818 819 dp = efiblk_get_pdinfo_by_handle(h); 820 if (dp == NULL) 821 return; 822 set_currdev_pdinfo(dp); 823 if (stat(env_fn, &st) != 0) 824 return; 825 fd = open(env_fn, O_RDONLY); 826 if (fd == -1) 827 return; 828 env = malloc(st.st_size + 1); 829 if (env == NULL) 830 goto out; 831 if (read(fd, env, st.st_size) != st.st_size) 832 goto out; 833 env[st.st_size] = '\0'; 834 boot_parse_cmdline(env); 835out: 836 free(env); 837 close(fd); 838} 839 840static void 841read_loader_env(const char *name, char *def_fn, bool once) 842{ 843 UINTN len; 844 char *fn, *freeme = NULL; 845 846 len = 0; 847 fn = def_fn; 848 if (efi_freebsd_getenv(name, NULL, &len) == EFI_BUFFER_TOO_SMALL) { 849 freeme = fn = malloc(len + 1); 850 if (fn != NULL) { 851 if (efi_freebsd_getenv(name, fn, &len) != EFI_SUCCESS) { 852 free(fn); 853 fn = NULL; 854 printf( 855 "Can't fetch FreeBSD::%s we know is there\n", name); 856 } else { 857 /* 858 * if tagged as 'once' delete the env variable so we 859 * only use it once. 860 */ 861 if (once) 862 efi_freebsd_delenv(name); 863 /* 864 * We malloced 1 more than len above, then redid the call. 865 * so now we have room at the end of the string to NUL terminate 866 * it here, even if the typical idium would have '- 1' here to 867 * not overflow. len should be the same on return both times. 868 */ 869 fn[len] = '\0'; 870 } 871 } else { 872 printf( 873 "Can't allocate %d bytes to fetch FreeBSD::%s env var\n", 874 len, name); 875 } 876 } 877 if (fn) { 878 printf(" Reading loader env vars from %s\n", fn); 879 parse_loader_efi_config(boot_img->DeviceHandle, fn); 880 } 881} 882 883caddr_t 884ptov(uintptr_t x) 885{ 886 return ((caddr_t)x); 887} 888 889EFI_STATUS 890main(int argc, CHAR16 *argv[]) 891{ 892 EFI_GUID *guid; 893 int howto, i, uhowto; 894 UINTN k; 895 bool has_kbd, is_last; 896 char *s; 897 EFI_DEVICE_PATH *imgpath; 898 CHAR16 *text; 899 EFI_STATUS rv; 900 size_t sz, bosz = 0, bisz = 0; 901 UINT16 boot_order[100]; 902 char boot_info[4096]; 903 char buf[32]; 904 bool uefi_boot_mgr; 905 906 archsw.arch_autoload = efi_autoload; 907 archsw.arch_getdev = efi_getdev; 908 archsw.arch_copyin = efi_copyin; 909 archsw.arch_copyout = efi_copyout; 910#ifdef __amd64__ 911 archsw.arch_hypervisor = x86_hypervisor; 912#endif 913 archsw.arch_readin = efi_readin; 914 archsw.arch_zfs_probe = efi_zfs_probe; 915 916 /* Get our loaded image protocol interface structure. */ 917 (void) OpenProtocolByHandle(IH, &imgid, (void **)&boot_img); 918 919 /* 920 * Chicken-and-egg problem; we want to have console output early, but 921 * some console attributes may depend on reading from eg. the boot 922 * device, which we can't do yet. We can use printf() etc. once this is 923 * done. So, we set it to the efi console, then call console init. This 924 * gets us printf early, but also primes the pump for all future console 925 * changes to take effect, regardless of where they come from. 926 */ 927 setenv("console", "efi", 1); 928 uhowto = parse_uefi_con_out(); 929#if defined(__aarch64__) || defined(__arm__) || defined(__riscv) 930 if ((uhowto & RB_SERIAL) != 0) 931 setenv("console", "comconsole", 1); 932#endif 933 cons_probe(); 934 935 /* Init the time source */ 936 efi_time_init(); 937 938 /* 939 * Initialise the block cache. Set the upper limit. 940 */ 941 bcache_init(32768, 512); 942 943 /* 944 * Scan the BLOCK IO MEDIA handles then 945 * march through the device switch probing for things. 946 */ 947 i = efipart_inithandles(); 948 if (i != 0 && i != ENOENT) { 949 printf("efipart_inithandles failed with ERRNO %d, expect " 950 "failures\n", i); 951 } 952 953 for (i = 0; devsw[i] != NULL; i++) 954 if (devsw[i]->dv_init != NULL) 955 (devsw[i]->dv_init)(); 956 957 /* 958 * Detect console settings two different ways: one via the command 959 * args (eg -h) or via the UEFI ConOut variable. 960 */ 961 has_kbd = has_keyboard(); 962 howto = parse_args(argc, argv); 963 if (!has_kbd && (howto & RB_PROBE)) 964 howto |= RB_SERIAL | RB_MULTIPLE; 965 howto &= ~RB_PROBE; 966 967 /* 968 * Read additional environment variables from the boot device's 969 * "LoaderEnv" file. Any boot loader environment variable may be set 970 * there, which are subtly different than loader.conf variables. Only 971 * the 'simple' ones may be set so things like foo_load="YES" won't work 972 * for two reasons. First, the parser is simplistic and doesn't grok 973 * quotes. Second, because the variables that cause an action to happen 974 * are parsed by the lua, 4th or whatever code that's not yet 975 * loaded. This is relative to the root directory when loader.efi is 976 * loaded off the UFS root drive (when chain booted), or from the ESP 977 * when directly loaded by the BIOS. 978 * 979 * We also read in NextLoaderEnv if it was specified. This allows next boot 980 * functionality to be implemented and to override anything in LoaderEnv. 981 */ 982 read_loader_env("LoaderEnv", "/efi/freebsd/loader.env", false); 983 read_loader_env("NextLoaderEnv", NULL, true); 984 985 /* 986 * We now have two notions of console. howto should be viewed as 987 * overrides. If console is already set, don't set it again. 988 */ 989#define VIDEO_ONLY 0 990#define SERIAL_ONLY RB_SERIAL 991#define VID_SER_BOTH RB_MULTIPLE 992#define SER_VID_BOTH (RB_SERIAL | RB_MULTIPLE) 993#define CON_MASK (RB_SERIAL | RB_MULTIPLE) 994 if (strcmp(getenv("console"), "efi") == 0) { 995 if ((howto & CON_MASK) == 0) { 996 /* No override, uhowto is controlling and efi cons is perfect */ 997 howto = howto | (uhowto & CON_MASK); 998 } else if ((howto & CON_MASK) == (uhowto & CON_MASK)) { 999 /* override matches what UEFI told us, efi console is perfect */ 1000 } else if ((uhowto & (CON_MASK)) != 0) { 1001 /* 1002 * We detected a serial console on ConOut. All possible 1003 * overrides include serial. We can't really override what efi 1004 * gives us, so we use it knowing it's the best choice. 1005 */ 1006 /* Do nothing */ 1007 } else { 1008 /* 1009 * We detected some kind of serial in the override, but ConOut 1010 * has no serial, so we have to sort out which case it really is. 1011 */ 1012 switch (howto & CON_MASK) { 1013 case SERIAL_ONLY: 1014 setenv("console", "comconsole", 1); 1015 break; 1016 case VID_SER_BOTH: 1017 setenv("console", "efi comconsole", 1); 1018 break; 1019 case SER_VID_BOTH: 1020 setenv("console", "comconsole efi", 1); 1021 break; 1022 /* case VIDEO_ONLY can't happen -- it's the first if above */ 1023 } 1024 } 1025 } 1026 1027 /* 1028 * howto is set now how we want to export the flags to the kernel, so 1029 * set the env based on it. 1030 */ 1031 boot_howto_to_env(howto); 1032 1033 if (efi_copy_init()) { 1034 printf("failed to allocate staging area\n"); 1035 return (EFI_BUFFER_TOO_SMALL); 1036 } 1037 1038 if ((s = getenv("fail_timeout")) != NULL) 1039 fail_timeout = strtol(s, NULL, 10); 1040 1041 printf("%s\n", bootprog_info); 1042 printf(" Command line arguments:"); 1043 for (i = 0; i < argc; i++) 1044 printf(" %S", argv[i]); 1045 printf("\n"); 1046 1047 printf(" Image base: 0x%lx\n", (unsigned long)boot_img->ImageBase); 1048 printf(" EFI version: %d.%02d\n", ST->Hdr.Revision >> 16, 1049 ST->Hdr.Revision & 0xffff); 1050 printf(" EFI Firmware: %S (rev %d.%02d)\n", ST->FirmwareVendor, 1051 ST->FirmwareRevision >> 16, ST->FirmwareRevision & 0xffff); 1052 printf(" Console: %s (%#x)\n", getenv("console"), howto); 1053 1054 /* Determine the devpath of our image so we can prefer it. */ 1055 text = efi_devpath_name(boot_img->FilePath); 1056 if (text != NULL) { 1057 printf(" Load Path: %S\n", text); 1058 efi_setenv_freebsd_wcs("LoaderPath", text); 1059 efi_free_devpath_name(text); 1060 } 1061 1062 rv = OpenProtocolByHandle(boot_img->DeviceHandle, &devid, 1063 (void **)&imgpath); 1064 if (rv == EFI_SUCCESS) { 1065 text = efi_devpath_name(imgpath); 1066 if (text != NULL) { 1067 printf(" Load Device: %S\n", text); 1068 efi_setenv_freebsd_wcs("LoaderDev", text); 1069 efi_free_devpath_name(text); 1070 } 1071 } 1072 1073 if (getenv("uefi_ignore_boot_mgr") != NULL) { 1074 printf(" Ignoring UEFI boot manager\n"); 1075 uefi_boot_mgr = false; 1076 } else { 1077 uefi_boot_mgr = true; 1078 boot_current = 0; 1079 sz = sizeof(boot_current); 1080 rv = efi_global_getenv("BootCurrent", &boot_current, &sz); 1081 if (rv == EFI_SUCCESS) 1082 printf(" BootCurrent: %04x\n", boot_current); 1083 else { 1084 boot_current = 0xffff; 1085 uefi_boot_mgr = false; 1086 } 1087 1088 sz = sizeof(boot_order); 1089 rv = efi_global_getenv("BootOrder", &boot_order, &sz); 1090 if (rv == EFI_SUCCESS) { 1091 printf(" BootOrder:"); 1092 for (i = 0; i < sz / sizeof(boot_order[0]); i++) 1093 printf(" %04x%s", boot_order[i], 1094 boot_order[i] == boot_current ? "[*]" : ""); 1095 printf("\n"); 1096 is_last = boot_order[(sz / sizeof(boot_order[0])) - 1] == boot_current; 1097 bosz = sz; 1098 } else if (uefi_boot_mgr) { 1099 /* 1100 * u-boot doesn't set BootOrder, but otherwise participates in the 1101 * boot manager protocol. So we fake it here and don't consider it 1102 * a failure. 1103 */ 1104 bosz = sizeof(boot_order[0]); 1105 boot_order[0] = boot_current; 1106 is_last = true; 1107 } 1108 } 1109 1110 /* 1111 * Next, find the boot info structure the UEFI boot manager is 1112 * supposed to setup. We need this so we can walk through it to 1113 * find where we are in the booting process and what to try to 1114 * boot next. 1115 */ 1116 if (uefi_boot_mgr) { 1117 snprintf(buf, sizeof(buf), "Boot%04X", boot_current); 1118 sz = sizeof(boot_info); 1119 rv = efi_global_getenv(buf, &boot_info, &sz); 1120 if (rv == EFI_SUCCESS) 1121 bisz = sz; 1122 else 1123 uefi_boot_mgr = false; 1124 } 1125 1126 /* 1127 * Disable the watchdog timer. By default the boot manager sets 1128 * the timer to 5 minutes before invoking a boot option. If we 1129 * want to return to the boot manager, we have to disable the 1130 * watchdog timer and since we're an interactive program, we don't 1131 * want to wait until the user types "quit". The timer may have 1132 * fired by then. We don't care if this fails. It does not prevent 1133 * normal functioning in any way... 1134 */ 1135 BS->SetWatchdogTimer(0, 0, 0, NULL); 1136 1137 /* 1138 * Initialize the trusted/forbidden certificates from UEFI. 1139 * They will be later used to verify the manifest(s), 1140 * which should contain hashes of verified files. 1141 * This needs to be initialized before any configuration files 1142 * are loaded. 1143 */ 1144#ifdef EFI_SECUREBOOT 1145 ve_efi_init(); 1146#endif 1147 1148 /* 1149 * Try and find a good currdev based on the image that was booted. 1150 * It might be desirable here to have a short pause to allow falling 1151 * through to the boot loader instead of returning instantly to follow 1152 * the boot protocol and also allow an escape hatch for users wishing 1153 * to try something different. 1154 */ 1155 if (find_currdev(uefi_boot_mgr, is_last, boot_info, bisz) != 0) 1156 if (uefi_boot_mgr && 1157 !interactive_interrupt("Failed to find bootable partition")) 1158 return (EFI_NOT_FOUND); 1159 1160 autoload_font(false); /* Set up the font list for console. */ 1161 efi_init_environment(); 1162 1163#if !defined(__arm__) 1164 for (k = 0; k < ST->NumberOfTableEntries; k++) { 1165 guid = &ST->ConfigurationTable[k].VendorGuid; 1166 if (!memcmp(guid, &smbios, sizeof(EFI_GUID))) { 1167 char buf[40]; 1168 1169 snprintf(buf, sizeof(buf), "%p", 1170 ST->ConfigurationTable[k].VendorTable); 1171 setenv("hint.smbios.0.mem", buf, 1); 1172 smbios_detect(ST->ConfigurationTable[k].VendorTable); 1173 break; 1174 } 1175 } 1176#endif 1177 1178 interact(); /* doesn't return */ 1179 1180 return (EFI_SUCCESS); /* keep compiler happy */ 1181} 1182 1183COMMAND_SET(poweroff, "poweroff", "power off the system", command_poweroff); 1184 1185static int 1186command_poweroff(int argc __unused, char *argv[] __unused) 1187{ 1188 int i; 1189 1190 for (i = 0; devsw[i] != NULL; ++i) 1191 if (devsw[i]->dv_cleanup != NULL) 1192 (devsw[i]->dv_cleanup)(); 1193 1194 RS->ResetSystem(EfiResetShutdown, EFI_SUCCESS, 0, NULL); 1195 1196 /* NOTREACHED */ 1197 return (CMD_ERROR); 1198} 1199 1200COMMAND_SET(reboot, "reboot", "reboot the system", command_reboot); 1201 1202static int 1203command_reboot(int argc, char *argv[]) 1204{ 1205 int i; 1206 1207 for (i = 0; devsw[i] != NULL; ++i) 1208 if (devsw[i]->dv_cleanup != NULL) 1209 (devsw[i]->dv_cleanup)(); 1210 1211 RS->ResetSystem(EfiResetCold, EFI_SUCCESS, 0, NULL); 1212 1213 /* NOTREACHED */ 1214 return (CMD_ERROR); 1215} 1216 1217COMMAND_SET(quit, "quit", "exit the loader", command_quit); 1218 1219static int 1220command_quit(int argc, char *argv[]) 1221{ 1222 exit(0); 1223 return (CMD_OK); 1224} 1225 1226COMMAND_SET(memmap, "memmap", "print memory map", command_memmap); 1227 1228static int 1229command_memmap(int argc __unused, char *argv[] __unused) 1230{ 1231 UINTN sz; 1232 EFI_MEMORY_DESCRIPTOR *map, *p; 1233 UINTN key, dsz; 1234 UINT32 dver; 1235 EFI_STATUS status; 1236 int i, ndesc; 1237 char line[80]; 1238 1239 sz = 0; 1240 status = BS->GetMemoryMap(&sz, 0, &key, &dsz, &dver); 1241 if (status != EFI_BUFFER_TOO_SMALL) { 1242 printf("Can't determine memory map size\n"); 1243 return (CMD_ERROR); 1244 } 1245 map = malloc(sz); 1246 status = BS->GetMemoryMap(&sz, map, &key, &dsz, &dver); 1247 if (EFI_ERROR(status)) { 1248 printf("Can't read memory map\n"); 1249 return (CMD_ERROR); 1250 } 1251 1252 ndesc = sz / dsz; 1253 snprintf(line, sizeof(line), "%23s %12s %12s %8s %4s\n", 1254 "Type", "Physical", "Virtual", "#Pages", "Attr"); 1255 pager_open(); 1256 if (pager_output(line)) { 1257 pager_close(); 1258 return (CMD_OK); 1259 } 1260 1261 for (i = 0, p = map; i < ndesc; 1262 i++, p = NextMemoryDescriptor(p, dsz)) { 1263 snprintf(line, sizeof(line), "%23s %012jx %012jx %08jx ", 1264 efi_memory_type(p->Type), (uintmax_t)p->PhysicalStart, 1265 (uintmax_t)p->VirtualStart, (uintmax_t)p->NumberOfPages); 1266 if (pager_output(line)) 1267 break; 1268 1269 if (p->Attribute & EFI_MEMORY_UC) 1270 printf("UC "); 1271 if (p->Attribute & EFI_MEMORY_WC) 1272 printf("WC "); 1273 if (p->Attribute & EFI_MEMORY_WT) 1274 printf("WT "); 1275 if (p->Attribute & EFI_MEMORY_WB) 1276 printf("WB "); 1277 if (p->Attribute & EFI_MEMORY_UCE) 1278 printf("UCE "); 1279 if (p->Attribute & EFI_MEMORY_WP) 1280 printf("WP "); 1281 if (p->Attribute & EFI_MEMORY_RP) 1282 printf("RP "); 1283 if (p->Attribute & EFI_MEMORY_XP) 1284 printf("XP "); 1285 if (p->Attribute & EFI_MEMORY_NV) 1286 printf("NV "); 1287 if (p->Attribute & EFI_MEMORY_MORE_RELIABLE) 1288 printf("MR "); 1289 if (p->Attribute & EFI_MEMORY_RO) 1290 printf("RO "); 1291 if (pager_output("\n")) 1292 break; 1293 } 1294 1295 pager_close(); 1296 return (CMD_OK); 1297} 1298 1299COMMAND_SET(configuration, "configuration", "print configuration tables", 1300 command_configuration); 1301 1302static int 1303command_configuration(int argc, char *argv[]) 1304{ 1305 UINTN i; 1306 char *name; 1307 1308 printf("NumberOfTableEntries=%lu\n", 1309 (unsigned long)ST->NumberOfTableEntries); 1310 1311 for (i = 0; i < ST->NumberOfTableEntries; i++) { 1312 EFI_GUID *guid; 1313 1314 printf(" "); 1315 guid = &ST->ConfigurationTable[i].VendorGuid; 1316 1317 if (efi_guid_to_name(guid, &name) == true) { 1318 printf(name); 1319 free(name); 1320 } else { 1321 printf("Error while translating UUID to name"); 1322 } 1323 printf(" at %p\n", ST->ConfigurationTable[i].VendorTable); 1324 } 1325 1326 return (CMD_OK); 1327} 1328 1329 1330COMMAND_SET(mode, "mode", "change or display EFI text modes", command_mode); 1331 1332static int 1333command_mode(int argc, char *argv[]) 1334{ 1335 UINTN cols, rows; 1336 unsigned int mode; 1337 int i; 1338 char *cp; 1339 EFI_STATUS status; 1340 SIMPLE_TEXT_OUTPUT_INTERFACE *conout; 1341 1342 conout = ST->ConOut; 1343 1344 if (argc > 1) { 1345 mode = strtol(argv[1], &cp, 0); 1346 if (cp[0] != '\0') { 1347 printf("Invalid mode\n"); 1348 return (CMD_ERROR); 1349 } 1350 status = conout->QueryMode(conout, mode, &cols, &rows); 1351 if (EFI_ERROR(status)) { 1352 printf("invalid mode %d\n", mode); 1353 return (CMD_ERROR); 1354 } 1355 status = conout->SetMode(conout, mode); 1356 if (EFI_ERROR(status)) { 1357 printf("couldn't set mode %d\n", mode); 1358 return (CMD_ERROR); 1359 } 1360 (void) cons_update_mode(true); 1361 return (CMD_OK); 1362 } 1363 1364 printf("Current mode: %d\n", conout->Mode->Mode); 1365 for (i = 0; i <= conout->Mode->MaxMode; i++) { 1366 status = conout->QueryMode(conout, i, &cols, &rows); 1367 if (EFI_ERROR(status)) 1368 continue; 1369 printf("Mode %d: %u columns, %u rows\n", i, (unsigned)cols, 1370 (unsigned)rows); 1371 } 1372 1373 if (i != 0) 1374 printf("Select a mode with the command \"mode <number>\"\n"); 1375 1376 return (CMD_OK); 1377} 1378 1379COMMAND_SET(lsefi, "lsefi", "list EFI handles", command_lsefi); 1380 1381static int 1382command_lsefi(int argc __unused, char *argv[] __unused) 1383{ 1384 char *name; 1385 EFI_HANDLE *buffer = NULL; 1386 EFI_HANDLE handle; 1387 UINTN bufsz = 0, i, j; 1388 EFI_STATUS status; 1389 int ret = 0; 1390 1391 status = BS->LocateHandle(AllHandles, NULL, NULL, &bufsz, buffer); 1392 if (status != EFI_BUFFER_TOO_SMALL) { 1393 snprintf(command_errbuf, sizeof (command_errbuf), 1394 "unexpected error: %lld", (long long)status); 1395 return (CMD_ERROR); 1396 } 1397 if ((buffer = malloc(bufsz)) == NULL) { 1398 sprintf(command_errbuf, "out of memory"); 1399 return (CMD_ERROR); 1400 } 1401 1402 status = BS->LocateHandle(AllHandles, NULL, NULL, &bufsz, buffer); 1403 if (EFI_ERROR(status)) { 1404 free(buffer); 1405 snprintf(command_errbuf, sizeof (command_errbuf), 1406 "LocateHandle() error: %lld", (long long)status); 1407 return (CMD_ERROR); 1408 } 1409 1410 pager_open(); 1411 for (i = 0; i < (bufsz / sizeof (EFI_HANDLE)); i++) { 1412 UINTN nproto = 0; 1413 EFI_GUID **protocols = NULL; 1414 1415 handle = buffer[i]; 1416 printf("Handle %p", handle); 1417 if (pager_output("\n")) 1418 break; 1419 /* device path */ 1420 1421 status = BS->ProtocolsPerHandle(handle, &protocols, &nproto); 1422 if (EFI_ERROR(status)) { 1423 snprintf(command_errbuf, sizeof (command_errbuf), 1424 "ProtocolsPerHandle() error: %lld", 1425 (long long)status); 1426 continue; 1427 } 1428 1429 for (j = 0; j < nproto; j++) { 1430 if (efi_guid_to_name(protocols[j], &name) == true) { 1431 printf(" %s", name); 1432 free(name); 1433 } else { 1434 printf("Error while translating UUID to name"); 1435 } 1436 if ((ret = pager_output("\n")) != 0) 1437 break; 1438 } 1439 BS->FreePool(protocols); 1440 if (ret != 0) 1441 break; 1442 } 1443 pager_close(); 1444 free(buffer); 1445 return (CMD_OK); 1446} 1447 1448#ifdef LOADER_FDT_SUPPORT 1449extern int command_fdt_internal(int argc, char *argv[]); 1450 1451/* 1452 * Since proper fdt command handling function is defined in fdt_loader_cmd.c, 1453 * and declaring it as extern is in contradiction with COMMAND_SET() macro 1454 * (which uses static pointer), we're defining wrapper function, which 1455 * calls the proper fdt handling routine. 1456 */ 1457static int 1458command_fdt(int argc, char *argv[]) 1459{ 1460 1461 return (command_fdt_internal(argc, argv)); 1462} 1463 1464COMMAND_SET(fdt, "fdt", "flattened device tree handling", command_fdt); 1465#endif 1466 1467/* 1468 * Chain load another efi loader. 1469 */ 1470static int 1471command_chain(int argc, char *argv[]) 1472{ 1473 EFI_GUID LoadedImageGUID = LOADED_IMAGE_PROTOCOL; 1474 EFI_HANDLE loaderhandle; 1475 EFI_LOADED_IMAGE *loaded_image; 1476 EFI_STATUS status; 1477 struct stat st; 1478 struct devdesc *dev; 1479 char *name, *path; 1480 void *buf; 1481 int fd; 1482 1483 if (argc < 2) { 1484 command_errmsg = "wrong number of arguments"; 1485 return (CMD_ERROR); 1486 } 1487 1488 name = argv[1]; 1489 1490 if ((fd = open(name, O_RDONLY)) < 0) { 1491 command_errmsg = "no such file"; 1492 return (CMD_ERROR); 1493 } 1494 1495#ifdef LOADER_VERIEXEC 1496 if (verify_file(fd, name, 0, VE_MUST, __func__) < 0) { 1497 sprintf(command_errbuf, "can't verify: %s", name); 1498 close(fd); 1499 return (CMD_ERROR); 1500 } 1501#endif 1502 1503 if (fstat(fd, &st) < -1) { 1504 command_errmsg = "stat failed"; 1505 close(fd); 1506 return (CMD_ERROR); 1507 } 1508 1509 status = BS->AllocatePool(EfiLoaderCode, (UINTN)st.st_size, &buf); 1510 if (status != EFI_SUCCESS) { 1511 command_errmsg = "failed to allocate buffer"; 1512 close(fd); 1513 return (CMD_ERROR); 1514 } 1515 if (read(fd, buf, st.st_size) != st.st_size) { 1516 command_errmsg = "error while reading the file"; 1517 (void)BS->FreePool(buf); 1518 close(fd); 1519 return (CMD_ERROR); 1520 } 1521 close(fd); 1522 status = BS->LoadImage(FALSE, IH, NULL, buf, st.st_size, &loaderhandle); 1523 (void)BS->FreePool(buf); 1524 if (status != EFI_SUCCESS) { 1525 command_errmsg = "LoadImage failed"; 1526 return (CMD_ERROR); 1527 } 1528 status = OpenProtocolByHandle(loaderhandle, &LoadedImageGUID, 1529 (void **)&loaded_image); 1530 1531 if (argc > 2) { 1532 int i, len = 0; 1533 CHAR16 *argp; 1534 1535 for (i = 2; i < argc; i++) 1536 len += strlen(argv[i]) + 1; 1537 1538 len *= sizeof (*argp); 1539 loaded_image->LoadOptions = argp = malloc (len); 1540 loaded_image->LoadOptionsSize = len; 1541 for (i = 2; i < argc; i++) { 1542 char *ptr = argv[i]; 1543 while (*ptr) 1544 *(argp++) = *(ptr++); 1545 *(argp++) = ' '; 1546 } 1547 *(--argv) = 0; 1548 } 1549 1550 if (efi_getdev((void **)&dev, name, (const char **)&path) == 0) { 1551#ifdef EFI_ZFS_BOOT 1552 struct zfs_devdesc *z_dev; 1553#endif 1554 struct disk_devdesc *d_dev; 1555 pdinfo_t *hd, *pd; 1556 1557 switch (dev->d_dev->dv_type) { 1558#ifdef EFI_ZFS_BOOT 1559 case DEVT_ZFS: 1560 z_dev = (struct zfs_devdesc *)dev; 1561 loaded_image->DeviceHandle = 1562 efizfs_get_handle_by_guid(z_dev->pool_guid); 1563 break; 1564#endif 1565 case DEVT_NET: 1566 loaded_image->DeviceHandle = 1567 efi_find_handle(dev->d_dev, dev->d_unit); 1568 break; 1569 default: 1570 hd = efiblk_get_pdinfo(dev); 1571 if (STAILQ_EMPTY(&hd->pd_part)) { 1572 loaded_image->DeviceHandle = hd->pd_handle; 1573 break; 1574 } 1575 d_dev = (struct disk_devdesc *)dev; 1576 STAILQ_FOREACH(pd, &hd->pd_part, pd_link) { 1577 /* 1578 * d_partition should be 255 1579 */ 1580 if (pd->pd_unit == (uint32_t)d_dev->d_slice) { 1581 loaded_image->DeviceHandle = 1582 pd->pd_handle; 1583 break; 1584 } 1585 } 1586 break; 1587 } 1588 } 1589 1590 dev_cleanup(); 1591 status = BS->StartImage(loaderhandle, NULL, NULL); 1592 if (status != EFI_SUCCESS) { 1593 command_errmsg = "StartImage failed"; 1594 free(loaded_image->LoadOptions); 1595 loaded_image->LoadOptions = NULL; 1596 status = BS->UnloadImage(loaded_image); 1597 return (CMD_ERROR); 1598 } 1599 1600 return (CMD_ERROR); /* not reached */ 1601} 1602 1603COMMAND_SET(chain, "chain", "chain load file", command_chain); 1604 1605extern struct in_addr servip; 1606static int 1607command_netserver(int argc, char *argv[]) 1608{ 1609 char *proto; 1610 n_long rootaddr; 1611 1612 if (argc > 2) { 1613 command_errmsg = "wrong number of arguments"; 1614 return (CMD_ERROR); 1615 } 1616 if (argc < 2) { 1617 proto = netproto == NET_TFTP ? "tftp://" : "nfs://"; 1618 printf("Netserver URI: %s%s%s\n", proto, intoa(rootip.s_addr), 1619 rootpath); 1620 return (CMD_OK); 1621 } 1622 if (argc == 2) { 1623 strncpy(rootpath, argv[1], sizeof(rootpath)); 1624 rootpath[sizeof(rootpath) -1] = '\0'; 1625 if ((rootaddr = net_parse_rootpath()) != INADDR_NONE) 1626 servip.s_addr = rootip.s_addr = rootaddr; 1627 return (CMD_OK); 1628 } 1629 return (CMD_ERROR); /* not reached */ 1630 1631} 1632 1633COMMAND_SET(netserver, "netserver", "change or display netserver URI", 1634 command_netserver); 1635