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 <stand.h> 31 32 #include <sys/disk.h> 33 #include <sys/param.h> 34 #include <sys/reboot.h> 35 #include <sys/boot.h> 36 #ifdef EFI_ZFS_BOOT 37 #include <sys/zfs_bootenv.h> 38 #endif 39 #include <paths.h> 40 #include <netinet/in.h> 41 #include <netinet/in_systm.h> 42 #include <stdint.h> 43 #include <string.h> 44 #include <setjmp.h> 45 #include <disk.h> 46 #include <dev_net.h> 47 #include <net.h> 48 #include <machine/_inttypes.h> 49 50 #include <efi.h> 51 #include <efilib.h> 52 #include <efichar.h> 53 #include <efirng.h> 54 55 #include <uuid.h> 56 57 #include <bootstrap.h> 58 #include <smbios.h> 59 60 #include <dev/random/fortuna.h> 61 #include <geom/eli/pkcs5v2.h> 62 63 #include "efizfs.h" 64 #include "framebuffer.h" 65 66 #include "platform/acfreebsd.h" 67 #include "acconfig.h" 68 #define ACPI_SYSTEM_XFACE 69 #include "actypes.h" 70 #include "actbl.h" 71 72 #include "loader_efi.h" 73 74 struct arch_switch archsw; /* MI/MD interface boundary */ 75 76 EFI_GUID acpi = ACPI_TABLE_GUID; 77 EFI_GUID acpi20 = ACPI_20_TABLE_GUID; 78 EFI_GUID devid = DEVICE_PATH_PROTOCOL; 79 EFI_GUID imgid = LOADED_IMAGE_PROTOCOL; 80 EFI_GUID mps = MPS_TABLE_GUID; 81 EFI_GUID netid = EFI_SIMPLE_NETWORK_PROTOCOL; 82 EFI_GUID smbios = SMBIOS_TABLE_GUID; 83 EFI_GUID smbios3 = SMBIOS3_TABLE_GUID; 84 EFI_GUID dxe = DXE_SERVICES_TABLE_GUID; 85 EFI_GUID hoblist = HOB_LIST_TABLE_GUID; 86 EFI_GUID lzmadecomp = LZMA_DECOMPRESSION_GUID; 87 EFI_GUID mpcore = ARM_MP_CORE_INFO_TABLE_GUID; 88 EFI_GUID esrt = ESRT_TABLE_GUID; 89 EFI_GUID memtype = MEMORY_TYPE_INFORMATION_TABLE_GUID; 90 EFI_GUID debugimg = DEBUG_IMAGE_INFO_TABLE_GUID; 91 EFI_GUID fdtdtb = FDT_TABLE_GUID; 92 EFI_GUID inputid = SIMPLE_TEXT_INPUT_PROTOCOL; 93 94 /* 95 * Number of seconds to wait for a keystroke before exiting with failure 96 * in the event no currdev is found. -2 means always break, -1 means 97 * never break, 0 means poll once and then reboot, > 0 means wait for 98 * that many seconds. "fail_timeout" can be set in the environment as 99 * well. 100 */ 101 static int fail_timeout = 5; 102 103 /* 104 * Current boot variable 105 */ 106 UINT16 boot_current; 107 108 /* 109 * Image that we booted from. 110 */ 111 EFI_LOADED_IMAGE *boot_img; 112 113 /* 114 * RSDP base table. 115 */ 116 ACPI_TABLE_RSDP *rsdp; 117 118 static bool 119 has_keyboard(void) 120 { 121 EFI_STATUS status; 122 EFI_DEVICE_PATH *path; 123 EFI_HANDLE *hin, *hin_end, *walker; 124 UINTN sz; 125 bool retval = false; 126 127 /* 128 * Find all the handles that support the SIMPLE_TEXT_INPUT_PROTOCOL and 129 * do the typical dance to get the right sized buffer. 130 */ 131 sz = 0; 132 hin = NULL; 133 status = BS->LocateHandle(ByProtocol, &inputid, 0, &sz, 0); 134 if (status == EFI_BUFFER_TOO_SMALL) { 135 hin = (EFI_HANDLE *)malloc(sz); 136 status = BS->LocateHandle(ByProtocol, &inputid, 0, &sz, 137 hin); 138 if (EFI_ERROR(status)) 139 free(hin); 140 } 141 if (EFI_ERROR(status)) 142 return retval; 143 144 /* 145 * Look at each of the handles. If it supports the device path protocol, 146 * use it to get the device path for this handle. Then see if that 147 * device path matches either the USB device path for keyboards or the 148 * legacy device path for keyboards. 149 */ 150 hin_end = &hin[sz / sizeof(*hin)]; 151 for (walker = hin; walker < hin_end; walker++) { 152 status = OpenProtocolByHandle(*walker, &devid, (void **)&path); 153 if (EFI_ERROR(status)) 154 continue; 155 156 while (!IsDevicePathEnd(path)) { 157 /* 158 * Check for the ACPI keyboard node. All PNP3xx nodes 159 * are keyboards of different flavors. Note: It is 160 * unclear of there's always a keyboard node when 161 * there's a keyboard controller, or if there's only one 162 * when a keyboard is detected at boot. 163 */ 164 if (DevicePathType(path) == ACPI_DEVICE_PATH && 165 (DevicePathSubType(path) == ACPI_DP || 166 DevicePathSubType(path) == ACPI_EXTENDED_DP)) { 167 ACPI_HID_DEVICE_PATH *acpi; 168 169 acpi = (ACPI_HID_DEVICE_PATH *)(void *)path; 170 if ((EISA_ID_TO_NUM(acpi->HID) & 0xff00) == 0x300 && 171 (acpi->HID & 0xffff) == PNP_EISA_ID_CONST) { 172 retval = true; 173 goto out; 174 } 175 /* 176 * Check for USB keyboard node, if present. Unlike a 177 * PS/2 keyboard, these definitely only appear when 178 * connected to the system. 179 */ 180 } else if (DevicePathType(path) == MESSAGING_DEVICE_PATH && 181 DevicePathSubType(path) == MSG_USB_CLASS_DP) { 182 USB_CLASS_DEVICE_PATH *usb; 183 184 usb = (USB_CLASS_DEVICE_PATH *)(void *)path; 185 if (usb->DeviceClass == 3 && /* HID */ 186 usb->DeviceSubClass == 1 && /* Boot devices */ 187 usb->DeviceProtocol == 1) { /* Boot keyboards */ 188 retval = true; 189 goto out; 190 } 191 } 192 path = NextDevicePathNode(path); 193 } 194 } 195 out: 196 free(hin); 197 return retval; 198 } 199 200 static void 201 set_currdev_devdesc(struct devdesc *currdev) 202 { 203 const char *devname; 204 205 devname = devformat(currdev); 206 printf("Setting currdev to %s\n", devname); 207 set_currdev(devname); 208 } 209 210 static void 211 set_currdev_devsw(struct devsw *dev, int unit) 212 { 213 struct devdesc currdev; 214 215 currdev.d_dev = dev; 216 currdev.d_unit = unit; 217 218 set_currdev_devdesc(&currdev); 219 } 220 221 static void 222 set_currdev_pdinfo(pdinfo_t *dp) 223 { 224 225 /* 226 * Disks are special: they have partitions. if the parent 227 * pointer is non-null, we're a partition not a full disk 228 * and we need to adjust currdev appropriately. 229 */ 230 if (dp->pd_devsw->dv_type == DEVT_DISK) { 231 struct disk_devdesc currdev; 232 233 currdev.dd.d_dev = dp->pd_devsw; 234 if (dp->pd_parent == NULL) { 235 currdev.dd.d_unit = dp->pd_unit; 236 currdev.d_slice = D_SLICENONE; 237 currdev.d_partition = D_PARTNONE; 238 } else { 239 currdev.dd.d_unit = dp->pd_parent->pd_unit; 240 currdev.d_slice = dp->pd_unit; 241 currdev.d_partition = D_PARTISGPT; /* XXX Assumes GPT */ 242 } 243 set_currdev_devdesc((struct devdesc *)&currdev); 244 } else { 245 set_currdev_devsw(dp->pd_devsw, dp->pd_unit); 246 } 247 } 248 249 static bool 250 sanity_check_currdev(void) 251 { 252 struct stat st; 253 254 return (stat(PATH_DEFAULTS_LOADER_CONF, &st) == 0 || 255 #ifdef PATH_BOOTABLE_TOKEN 256 stat(PATH_BOOTABLE_TOKEN, &st) == 0 || /* non-standard layout */ 257 #endif 258 stat(PATH_KERNEL, &st) == 0); 259 } 260 261 #ifdef EFI_ZFS_BOOT 262 static bool 263 probe_zfs_currdev(uint64_t guid) 264 { 265 char buf[VDEV_PAD_SIZE]; 266 char *devname; 267 struct zfs_devdesc currdev; 268 269 currdev.dd.d_dev = &zfs_dev; 270 currdev.dd.d_unit = 0; 271 currdev.pool_guid = guid; 272 currdev.root_guid = 0; 273 devname = devformat(&currdev.dd); 274 set_currdev(devname); 275 printf("Setting currdev to %s\n", devname); 276 init_zfs_boot_options(devname); 277 278 if (zfs_get_bootonce(&currdev, OS_BOOTONCE, buf, sizeof(buf)) == 0) { 279 printf("zfs bootonce: %s\n", buf); 280 set_currdev(buf); 281 setenv("zfs-bootonce", buf, 1); 282 } 283 (void)zfs_attach_nvstore(&currdev); 284 285 return (sanity_check_currdev()); 286 } 287 #endif 288 289 #ifdef MD_IMAGE_SIZE 290 extern struct devsw md_dev; 291 292 static bool 293 probe_md_currdev(void) 294 { 295 bool rv; 296 297 set_currdev_devsw(&md_dev, 0); 298 rv = sanity_check_currdev(); 299 if (!rv) 300 printf("MD not present\n"); 301 return (rv); 302 } 303 #endif 304 305 static bool 306 try_as_currdev(pdinfo_t *hd, pdinfo_t *pp) 307 { 308 uint64_t guid; 309 310 #ifdef EFI_ZFS_BOOT 311 /* 312 * If there's a zpool on this device, try it as a ZFS 313 * filesystem, which has somewhat different setup than all 314 * other types of fs due to imperfect loader integration. 315 * This all stems from ZFS being both a device (zpool) and 316 * a filesystem, plus the boot env feature. 317 */ 318 if (efizfs_get_guid_by_handle(pp->pd_handle, &guid)) 319 return (probe_zfs_currdev(guid)); 320 #endif 321 /* 322 * All other filesystems just need the pdinfo 323 * initialized in the standard way. 324 */ 325 set_currdev_pdinfo(pp); 326 return (sanity_check_currdev()); 327 } 328 329 /* 330 * Sometimes we get filenames that are all upper case 331 * and/or have backslashes in them. Filter all this out 332 * if it looks like we need to do so. 333 */ 334 static void 335 fix_dosisms(char *p) 336 { 337 while (*p) { 338 if (isupper(*p)) 339 *p = tolower(*p); 340 else if (*p == '\\') 341 *p = '/'; 342 p++; 343 } 344 } 345 346 #define SIZE(dp, edp) (size_t)((intptr_t)(void *)edp - (intptr_t)(void *)dp) 347 348 enum { BOOT_INFO_OK = 0, BAD_CHOICE = 1, NOT_SPECIFIC = 2 }; 349 static int 350 match_boot_info(char *boot_info, size_t bisz) 351 { 352 uint32_t attr; 353 uint16_t fplen; 354 size_t len; 355 char *walker, *ep; 356 EFI_DEVICE_PATH *dp, *edp, *first_dp, *last_dp; 357 pdinfo_t *pp; 358 CHAR16 *descr; 359 char *kernel = NULL; 360 FILEPATH_DEVICE_PATH *fp; 361 struct stat st; 362 CHAR16 *text; 363 364 /* 365 * FreeBSD encodes its boot loading path into the boot loader 366 * BootXXXX variable. We look for the last one in the path 367 * and use that to load the kernel. However, if we only find 368 * one DEVICE_PATH, then there's nothing specific and we should 369 * fall back. 370 * 371 * In an ideal world, we'd look at the image handle we were 372 * passed, match up with the loader we are and then return the 373 * next one in the path. This would be most flexible and cover 374 * many chain booting scenarios where you need to use this 375 * boot loader to get to the next boot loader. However, that 376 * doesn't work. We rarely have the path to the image booted 377 * (just the device) so we can't count on that. So, we do the 378 * next best thing: we look through the device path(s) passed 379 * in the BootXXXX variable. If there's only one, we return 380 * NOT_SPECIFIC. Otherwise, we look at the last one and try to 381 * load that. If we can, we return BOOT_INFO_OK. Otherwise we 382 * return BAD_CHOICE for the caller to sort out. 383 */ 384 if (bisz < sizeof(attr) + sizeof(fplen) + sizeof(CHAR16)) 385 return NOT_SPECIFIC; 386 walker = boot_info; 387 ep = walker + bisz; 388 memcpy(&attr, walker, sizeof(attr)); 389 walker += sizeof(attr); 390 memcpy(&fplen, walker, sizeof(fplen)); 391 walker += sizeof(fplen); 392 descr = (CHAR16 *)(intptr_t)walker; 393 len = ucs2len(descr); 394 walker += (len + 1) * sizeof(CHAR16); 395 last_dp = first_dp = dp = (EFI_DEVICE_PATH *)walker; 396 edp = (EFI_DEVICE_PATH *)(walker + fplen); 397 if ((char *)edp > ep) 398 return NOT_SPECIFIC; 399 while (dp < edp && SIZE(dp, edp) > sizeof(EFI_DEVICE_PATH)) { 400 text = efi_devpath_name(dp); 401 if (text != NULL) { 402 printf(" BootInfo Path: %S\n", text); 403 efi_free_devpath_name(text); 404 } 405 last_dp = dp; 406 dp = (EFI_DEVICE_PATH *)((char *)dp + efi_devpath_length(dp)); 407 } 408 409 /* 410 * If there's only one item in the list, then nothing was 411 * specified. Or if the last path doesn't have a media 412 * path in it. Those show up as various VenHw() nodes 413 * which are basically opaque to us. Don't count those 414 * as something specifc. 415 */ 416 if (last_dp == first_dp) { 417 printf("Ignoring Boot%04x: Only one DP found\n", boot_current); 418 return NOT_SPECIFIC; 419 } 420 if (efi_devpath_to_media_path(last_dp) == NULL) { 421 printf("Ignoring Boot%04x: No Media Path\n", boot_current); 422 return NOT_SPECIFIC; 423 } 424 425 /* 426 * OK. At this point we either have a good path or a bad one. 427 * Let's check. 428 */ 429 pp = efiblk_get_pdinfo_by_device_path(last_dp); 430 if (pp == NULL) { 431 printf("Ignoring Boot%04x: Device Path not found\n", boot_current); 432 return BAD_CHOICE; 433 } 434 set_currdev_pdinfo(pp); 435 if (!sanity_check_currdev()) { 436 printf("Ignoring Boot%04x: sanity check failed\n", boot_current); 437 return BAD_CHOICE; 438 } 439 440 /* 441 * OK. We've found a device that matches, next we need to check the last 442 * component of the path. If it's a file, then we set the default kernel 443 * to that. Otherwise, just use this as the default root. 444 * 445 * Reminder: we're running very early, before we've parsed the defaults 446 * file, so we may need to have a hack override. 447 */ 448 dp = efi_devpath_last_node(last_dp); 449 if (DevicePathType(dp) != MEDIA_DEVICE_PATH || 450 DevicePathSubType(dp) != MEDIA_FILEPATH_DP) { 451 printf("Using Boot%04x for root partition\n", boot_current); 452 return (BOOT_INFO_OK); /* use currdir, default kernel */ 453 } 454 fp = (FILEPATH_DEVICE_PATH *)dp; 455 ucs2_to_utf8(fp->PathName, &kernel); 456 if (kernel == NULL) { 457 printf("Not using Boot%04x: can't decode kernel\n", boot_current); 458 return (BAD_CHOICE); 459 } 460 if (*kernel == '\\' || isupper(*kernel)) 461 fix_dosisms(kernel); 462 if (stat(kernel, &st) != 0) { 463 free(kernel); 464 printf("Not using Boot%04x: can't find %s\n", boot_current, 465 kernel); 466 return (BAD_CHOICE); 467 } 468 setenv("kernel", kernel, 1); 469 free(kernel); 470 text = efi_devpath_name(last_dp); 471 if (text) { 472 printf("Using Boot%04x %S + %s\n", boot_current, text, 473 kernel); 474 efi_free_devpath_name(text); 475 } 476 477 return (BOOT_INFO_OK); 478 } 479 480 /* 481 * Look at the passed-in boot_info, if any. If we find it then we need 482 * to see if we can find ourselves in the boot chain. If we can, and 483 * there's another specified thing to boot next, assume that the file 484 * is loaded from / and use that for the root filesystem. If can't 485 * find the specified thing, we must fail the boot. If we're last on 486 * the list, then we fallback to looking for the first available / 487 * candidate (ZFS, if there's a bootable zpool, otherwise a UFS 488 * partition that has either /boot/defaults/loader.conf on it or 489 * /boot/kernel/kernel (the default kernel) that we can use. 490 * 491 * We always fail if we can't find the right thing. However, as 492 * a concession to buggy UEFI implementations, like u-boot, if 493 * we have determined that the host is violating the UEFI boot 494 * manager protocol, we'll signal the rest of the program that 495 * a drop to the OK boot loader prompt is possible. 496 */ 497 static int 498 find_currdev(bool do_bootmgr, bool is_last, 499 char *boot_info, size_t boot_info_sz) 500 { 501 pdinfo_t *dp, *pp; 502 EFI_DEVICE_PATH *devpath, *copy; 503 EFI_HANDLE h; 504 CHAR16 *text; 505 struct devsw *dev; 506 int unit; 507 uint64_t extra; 508 int rv; 509 char *rootdev; 510 511 /* 512 * First choice: if rootdev is already set, use that, even if 513 * it's wrong. 514 */ 515 rootdev = getenv("rootdev"); 516 if (rootdev != NULL) { 517 printf(" Setting currdev to configured rootdev %s\n", 518 rootdev); 519 set_currdev(rootdev); 520 return (0); 521 } 522 523 /* 524 * Second choice: If uefi_rootdev is set, translate that UEFI device 525 * path to the loader's internal name and use that. 526 */ 527 do { 528 rootdev = getenv("uefi_rootdev"); 529 if (rootdev == NULL) 530 break; 531 devpath = efi_name_to_devpath(rootdev); 532 if (devpath == NULL) 533 break; 534 dp = efiblk_get_pdinfo_by_device_path(devpath); 535 efi_devpath_free(devpath); 536 if (dp == NULL) 537 break; 538 printf(" Setting currdev to UEFI path %s\n", 539 rootdev); 540 set_currdev_pdinfo(dp); 541 return (0); 542 } while (0); 543 544 /* 545 * Third choice: If we can find out image boot_info, and there's 546 * a follow-on boot image in that boot_info, use that. In this 547 * case root will be the partition specified in that image and 548 * we'll load the kernel specified by the file path. Should there 549 * not be a filepath, we use the default. This filepath overrides 550 * loader.conf. 551 */ 552 if (do_bootmgr) { 553 rv = match_boot_info(boot_info, boot_info_sz); 554 switch (rv) { 555 case BOOT_INFO_OK: /* We found it */ 556 return (0); 557 case BAD_CHOICE: /* specified file not found -> error */ 558 /* XXX do we want to have an escape hatch for last in boot order? */ 559 return (ENOENT); 560 } /* Nothing specified, try normal match */ 561 } 562 563 #ifdef EFI_ZFS_BOOT 564 /* 565 * Did efi_zfs_probe() detect the boot pool? If so, use the zpool 566 * it found, if it's sane. ZFS is the only thing that looks for 567 * disks and pools to boot. This may change in the future, however, 568 * if we allow specifying which pool to boot from via UEFI variables 569 * rather than the bootenv stuff that FreeBSD uses today. 570 */ 571 if (pool_guid != 0) { 572 printf("Trying ZFS pool\n"); 573 if (probe_zfs_currdev(pool_guid)) 574 return (0); 575 } 576 #endif /* EFI_ZFS_BOOT */ 577 578 #ifdef MD_IMAGE_SIZE 579 /* 580 * If there is an embedded MD, try to use that. 581 */ 582 printf("Trying MD\n"); 583 if (probe_md_currdev()) 584 return (0); 585 #endif /* MD_IMAGE_SIZE */ 586 587 /* 588 * Try to find the block device by its handle based on the 589 * image we're booting. If we can't find a sane partition, 590 * search all the other partitions of the disk. We do not 591 * search other disks because it's a violation of the UEFI 592 * boot protocol to do so. We fail and let UEFI go on to 593 * the next candidate. 594 */ 595 dp = efiblk_get_pdinfo_by_handle(boot_img->DeviceHandle); 596 if (dp != NULL) { 597 text = efi_devpath_name(dp->pd_devpath); 598 if (text != NULL) { 599 printf("Trying ESP: %S\n", text); 600 efi_free_devpath_name(text); 601 } 602 set_currdev_pdinfo(dp); 603 if (sanity_check_currdev()) 604 return (0); 605 if (dp->pd_parent != NULL) { 606 pdinfo_t *espdp = dp; 607 dp = dp->pd_parent; 608 STAILQ_FOREACH(pp, &dp->pd_part, pd_link) { 609 /* Already tried the ESP */ 610 if (espdp == pp) 611 continue; 612 /* 613 * Roll up the ZFS special case 614 * for those partitions that have 615 * zpools on them. 616 */ 617 text = efi_devpath_name(pp->pd_devpath); 618 if (text != NULL) { 619 printf("Trying: %S\n", text); 620 efi_free_devpath_name(text); 621 } 622 if (try_as_currdev(dp, pp)) 623 return (0); 624 } 625 } 626 } 627 628 /* 629 * Try the device handle from our loaded image first. If that 630 * fails, use the device path from the loaded image and see if 631 * any of the nodes in that path match one of the enumerated 632 * handles. Currently, this handle list is only for netboot. 633 */ 634 if (efi_handle_lookup(boot_img->DeviceHandle, &dev, &unit, &extra) == 0) { 635 set_currdev_devsw(dev, unit); 636 if (sanity_check_currdev()) 637 return (0); 638 } 639 640 copy = NULL; 641 devpath = efi_lookup_image_devpath(IH); 642 while (devpath != NULL) { 643 h = efi_devpath_handle(devpath); 644 if (h == NULL) 645 break; 646 647 free(copy); 648 copy = NULL; 649 650 if (efi_handle_lookup(h, &dev, &unit, &extra) == 0) { 651 set_currdev_devsw(dev, unit); 652 if (sanity_check_currdev()) 653 return (0); 654 } 655 656 devpath = efi_lookup_devpath(h); 657 if (devpath != NULL) { 658 copy = efi_devpath_trim(devpath); 659 devpath = copy; 660 } 661 } 662 free(copy); 663 664 return (ENOENT); 665 } 666 667 static bool 668 interactive_interrupt(const char *msg) 669 { 670 time_t now, then, last; 671 672 last = 0; 673 now = then = getsecs(); 674 printf("%s\n", msg); 675 if (fail_timeout == -2) /* Always break to OK */ 676 return (true); 677 if (fail_timeout == -1) /* Never break to OK */ 678 return (false); 679 do { 680 if (last != now) { 681 printf("press any key to interrupt reboot in %d seconds\r", 682 fail_timeout - (int)(now - then)); 683 last = now; 684 } 685 686 /* XXX no pause or timeout wait for char */ 687 if (ischar()) 688 return (true); 689 now = getsecs(); 690 } while (now - then < fail_timeout); 691 return (false); 692 } 693 694 static int 695 parse_args(int argc, CHAR16 *argv[]) 696 { 697 int i, howto; 698 char var[128]; 699 700 /* 701 * Parse the args to set the console settings, etc 702 * boot1.efi passes these in, if it can read /boot.config or /boot/config 703 * or iPXE may be setup to pass these in. Or the optional argument in the 704 * boot environment was used to pass these arguments in (in which case 705 * neither /boot.config nor /boot/config are consulted). 706 * 707 * Loop through the args, and for each one that contains an '=' that is 708 * not the first character, add it to the environment. This allows 709 * loader and kernel env vars to be passed on the command line. Convert 710 * args from UCS-2 to ASCII (16 to 8 bit) as they are copied (though this 711 * method is flawed for non-ASCII characters). 712 */ 713 howto = 0; 714 for (i = 0; i < argc; i++) { 715 cpy16to8(argv[i], var, sizeof(var)); 716 howto |= boot_parse_arg(var); 717 } 718 719 return (howto); 720 } 721 722 static void 723 setenv_int(const char *key, int val) 724 { 725 char buf[20]; 726 727 snprintf(buf, sizeof(buf), "%d", val); 728 setenv(key, buf, 1); 729 } 730 731 static void * 732 acpi_map_sdt(vm_offset_t addr) 733 { 734 /* PA == VA */ 735 return ((void *)addr); 736 } 737 738 static int 739 acpi_checksum(void *p, size_t length) 740 { 741 uint8_t *bp; 742 uint8_t sum; 743 744 bp = p; 745 sum = 0; 746 while (length--) 747 sum += *bp++; 748 749 return (sum); 750 } 751 752 static void * 753 acpi_find_table(uint8_t *sig) 754 { 755 int entries, i, addr_size; 756 ACPI_TABLE_HEADER *sdp; 757 ACPI_TABLE_RSDT *rsdt; 758 ACPI_TABLE_XSDT *xsdt; 759 vm_offset_t addr; 760 761 if (rsdp == NULL) 762 return (NULL); 763 764 rsdt = (ACPI_TABLE_RSDT *)(uintptr_t)rsdp->RsdtPhysicalAddress; 765 xsdt = (ACPI_TABLE_XSDT *)(uintptr_t)rsdp->XsdtPhysicalAddress; 766 if (rsdp->Revision < 2) { 767 sdp = (ACPI_TABLE_HEADER *)rsdt; 768 addr_size = sizeof(uint32_t); 769 } else { 770 sdp = (ACPI_TABLE_HEADER *)xsdt; 771 addr_size = sizeof(uint64_t); 772 } 773 entries = (sdp->Length - sizeof(ACPI_TABLE_HEADER)) / addr_size; 774 for (i = 0; i < entries; i++) { 775 if (addr_size == 4) 776 addr = le32toh(rsdt->TableOffsetEntry[i]); 777 else 778 addr = le64toh(xsdt->TableOffsetEntry[i]); 779 if (addr == 0) 780 continue; 781 sdp = (ACPI_TABLE_HEADER *)acpi_map_sdt(addr); 782 if (acpi_checksum(sdp, sdp->Length)) { 783 printf("RSDT entry %d (sig %.4s) is corrupt", i, 784 sdp->Signature); 785 continue; 786 } 787 if (memcmp(sig, sdp->Signature, 4) == 0) 788 return (sdp); 789 } 790 return (NULL); 791 } 792 793 /* 794 * Convert the InterfaceType in the SPCR. These are encoded the same for DBG2 795 * tables as well (though we don't parse those here). 796 */ 797 static const char * 798 acpi_uart_type(UINT8 t) 799 { 800 static const char *types[] = { 801 [0x00] = "ns8250", /* Full 16550 */ 802 [0x01] = "ns8250", /* DBGP Rev 1 16550 subset */ 803 [0x03] = "pl011", /* Arm PL011 */ 804 [0x05] = "ns8250", /* Nvidia 16550 */ 805 [0x0d] = "pl011", /* Arm SBSA 32-bit width */ 806 [0x0e] = "pl011", /* Arm SBSA generic */ 807 [0x12] = "ns8250", /* 16550 defined in SerialPort */ 808 }; 809 810 if (t >= nitems(types)) 811 return (NULL); 812 return (types[t]); 813 } 814 815 static int 816 acpi_uart_baud(UINT8 b) 817 { 818 static int baud[] = { 0, -1, -1, 9600, 19200, -1, 57600, 115200 }; 819 820 if (b > 7) 821 return (-1); 822 return (baud[b]); 823 } 824 825 static int 826 acpi_uart_regionwidth(UINT8 rw) 827 { 828 if (rw == 0) 829 return (1); 830 if (rw > 4) 831 return (-1); 832 return (1 << (rw - 1)); 833 } 834 835 static const char * 836 acpi_uart_parity(UINT8 p) 837 { 838 /* Some of these SPCR entires get this wrong, hard wire none */ 839 return ("none"); 840 } 841 842 /* 843 * See if we can find a SPCR ACPI table in the static tables. If so, then it 844 * describes the serial console that's been redirected to, so we know that at 845 * least there's a serial console. this is most important for embedded systems 846 * that don't have traidtional PC serial ports. 847 * 848 * All the two letter variables in this function correspond to their usage in 849 * the uart(4) console string. We use io == -1 to select between I/O ports and 850 * memory mapped addresses. Set both hw.uart.console and hw.uart.consol.extra 851 * to communicate settings from SPCR to the kernel. 852 */ 853 static int 854 check_acpi_spcr(void) 855 { 856 ACPI_TABLE_SPCR *spcr; 857 int br, db, io, rs, rw, sb, xo, pv, pd; 858 uintmax_t mm; 859 const char *dt, *pa; 860 char *val = NULL; 861 862 spcr = acpi_find_table(ACPI_SIG_SPCR); 863 if (spcr == NULL) 864 return (0); 865 dt = acpi_uart_type(spcr->InterfaceType); 866 if (dt == NULL) { /* Kernel can't use unknown types */ 867 printf("UART Type %d not known\n", spcr->InterfaceType); 868 return (0); 869 } 870 871 /* I/O vs Memory mapped vs PCI device */ 872 io = -1; 873 pv = spcr->PciVendorId; 874 pd = spcr->PciDeviceId; 875 if (pv == 0xffff && pd == 0xffff) { 876 if (spcr->SerialPort.SpaceId == 1) 877 io = spcr->SerialPort.Address; 878 else { 879 mm = spcr->SerialPort.Address; 880 rs = ffs(spcr->SerialPort.BitWidth) - 4; 881 rw = acpi_uart_regionwidth(spcr->SerialPort.AccessWidth); 882 } 883 } else { 884 /* XXX todo: bus:device:function + flags and segment */ 885 } 886 887 /* Uart settings */ 888 pa = acpi_uart_parity(spcr->Parity); 889 sb = spcr->StopBits; 890 db = 8; 891 892 /* 893 * UartClkFreq is 3 and newer. We always use it then (it's only valid if 894 * it isn't 0, but if it is 0, we want to use 0 to have the kernel 895 * guess). 896 */ 897 if (spcr->Header.Revision <= 2) 898 xo = 0; 899 else 900 xo = spcr->UartClkFreq; 901 902 /* 903 * PreciseBaudrate, when non-zero, is to be preferred. It's only valid, 904 * though, for rev 4 and newer. So when it's 0 or the version is too 905 * old, we do the old-style table lookup. Otherwise we believe it. 906 */ 907 if (spcr->Header.Revision <= 3 || spcr->PreciseBaudrate == 0) 908 br = acpi_uart_baud(spcr->BaudRate); 909 else 910 br = spcr->PreciseBaudrate; 911 912 if (io != -1) { 913 asprintf(&val, "db:%d,dt:%s,io:%#x,pa:%s,br:%d,xo=%d", 914 db, dt, io, pa, br, xo); 915 } else if (pv != 0xffff && pd != 0xffff) { 916 asprintf(&val, "db:%d,dt:%s,pv:%#x,pd:%#x,pa:%s,br:%d,xo=%d", 917 db, dt, pv, pd, pa, br, xo); 918 } else { 919 asprintf(&val, "db:%d,dt:%s,mm:%#jx,rs:%d,rw:%d,pa:%s,br:%d,xo=%d", 920 db, dt, mm, rs, rw, pa, br, xo); 921 } 922 env_setenv("hw.uart.console", EV_VOLATILE, val, NULL, NULL); 923 free(val); 924 925 return (RB_SERIAL); 926 } 927 928 929 /* 930 * Parse ConOut (the list of consoles active) and see if we can find a serial 931 * port and/or a video port. It would be nice to also walk the ACPI DSDT to map 932 * the UID for the serial port to a port since there's no standard mapping. Also 933 * check for ConIn as well. This will be enough to determine if we have serial, 934 * and if we don't, we default to video. If there's a dual-console situation 935 * with only ConIn defined, this will currently fail. 936 */ 937 int 938 parse_uefi_con_out(void) 939 { 940 int how, rv; 941 int vid_seen = 0, com_seen = 0, seen = 0; 942 size_t sz; 943 char buf[4096], *ep; 944 EFI_DEVICE_PATH *node; 945 ACPI_HID_DEVICE_PATH *acpi; 946 UART_DEVICE_PATH *uart; 947 bool pci_pending; 948 949 /* 950 * A SPCR in the ACPI fixed tables documents a serial port used for the 951 * console. It may mirror a video console, or may be stand alone. If it 952 * is present, we return RB_SERIAL and will use it for the kernel. 953 */ 954 how = check_acpi_spcr(); 955 sz = sizeof(buf); 956 rv = efi_global_getenv("ConOut", buf, &sz); 957 if (rv != EFI_SUCCESS) 958 rv = efi_global_getenv("ConOutDev", buf, &sz); 959 if (rv != EFI_SUCCESS) 960 rv = efi_global_getenv("ConIn", buf, &sz); 961 if (rv != EFI_SUCCESS) { 962 /* 963 * If we don't have any Con* variable use both. If we have GOP 964 * make video primary, otherwise set serial primary. In either 965 * case, try to use both the 'efi' console which will use the 966 * GOP, if present and serial. If there's an EFI BIOS that omits 967 * this, but has a serial port redirect, we'll unavioidably get 968 * doubled characters, but we'll be right in all the other more 969 * common cases. 970 */ 971 if (efi_has_gop()) 972 how |= RB_MULTIPLE; 973 else 974 how |= RB_MULTIPLE | RB_SERIAL; 975 setenv("console", "efi,comconsole", 1); 976 goto out; 977 } 978 ep = buf + sz; 979 node = (EFI_DEVICE_PATH *)buf; 980 while ((char *)node < ep) { 981 if (IsDevicePathEndType(node)) { 982 if (pci_pending && vid_seen == 0) 983 vid_seen = ++seen; 984 } 985 pci_pending = false; 986 if (DevicePathType(node) == ACPI_DEVICE_PATH && 987 (DevicePathSubType(node) == ACPI_DP || 988 DevicePathSubType(node) == ACPI_EXTENDED_DP)) { 989 /* Check for Serial node */ 990 acpi = (void *)node; 991 if (EISA_ID_TO_NUM(acpi->HID) == 0x501) { 992 setenv_int("efi_8250_uid", acpi->UID); 993 com_seen = ++seen; 994 } 995 } else if (DevicePathType(node) == MESSAGING_DEVICE_PATH && 996 DevicePathSubType(node) == MSG_UART_DP) { 997 com_seen = ++seen; 998 uart = (void *)node; 999 setenv_int("efi_com_speed", uart->BaudRate); 1000 } else if (DevicePathType(node) == ACPI_DEVICE_PATH && 1001 DevicePathSubType(node) == ACPI_ADR_DP) { 1002 /* Check for AcpiAdr() Node for video */ 1003 vid_seen = ++seen; 1004 } else if (DevicePathType(node) == HARDWARE_DEVICE_PATH && 1005 DevicePathSubType(node) == HW_PCI_DP) { 1006 /* 1007 * Note, vmware fusion has a funky console device 1008 * PciRoot(0x0)/Pci(0xf,0x0) 1009 * which we can only detect at the end since we also 1010 * have to cope with: 1011 * PciRoot(0x0)/Pci(0x1f,0x0)/Serial(0x1) 1012 * so only match it if it's last. 1013 */ 1014 pci_pending = true; 1015 } 1016 node = NextDevicePathNode(node); 1017 } 1018 1019 /* 1020 * Truth table for RB_MULTIPLE | RB_SERIAL 1021 * Value Result 1022 * 0 Use only video console 1023 * RB_SERIAL Use only serial console 1024 * RB_MULTIPLE Use both video and serial console 1025 * (but video is primary so gets rc messages) 1026 * both Use both video and serial console 1027 * (but serial is primary so gets rc messages) 1028 * 1029 * Try to honor this as best we can. If only one of serial / video 1030 * found, then use that. Otherwise, use the first one we found. 1031 * This also implies if we found nothing, default to video. 1032 */ 1033 how = 0; 1034 if (vid_seen && com_seen) { 1035 how |= RB_MULTIPLE; 1036 if (com_seen < vid_seen) 1037 how |= RB_SERIAL; 1038 } else if (com_seen) 1039 how |= RB_SERIAL; 1040 out: 1041 return (how); 1042 } 1043 1044 void 1045 parse_loader_efi_config(EFI_HANDLE h, const char *env_fn) 1046 { 1047 pdinfo_t *dp; 1048 struct stat st; 1049 int fd = -1; 1050 char *env = NULL; 1051 1052 dp = efiblk_get_pdinfo_by_handle(h); 1053 if (dp == NULL) 1054 return; 1055 set_currdev_pdinfo(dp); 1056 if (stat(env_fn, &st) != 0) 1057 return; 1058 fd = open(env_fn, O_RDONLY); 1059 if (fd == -1) 1060 return; 1061 env = malloc(st.st_size + 1); 1062 if (env == NULL) 1063 goto out; 1064 if (read(fd, env, st.st_size) != st.st_size) 1065 goto out; 1066 env[st.st_size] = '\0'; 1067 boot_parse_cmdline(env); 1068 out: 1069 free(env); 1070 close(fd); 1071 } 1072 1073 static void 1074 read_loader_env(const char *name, char *def_fn, bool once) 1075 { 1076 UINTN len; 1077 char *fn, *freeme = NULL; 1078 1079 len = 0; 1080 fn = def_fn; 1081 if (efi_freebsd_getenv(name, NULL, &len) == EFI_BUFFER_TOO_SMALL) { 1082 freeme = fn = malloc(len + 1); 1083 if (fn != NULL) { 1084 if (efi_freebsd_getenv(name, fn, &len) != EFI_SUCCESS) { 1085 free(fn); 1086 fn = NULL; 1087 printf( 1088 "Can't fetch FreeBSD::%s we know is there\n", name); 1089 } else { 1090 /* 1091 * if tagged as 'once' delete the env variable so we 1092 * only use it once. 1093 */ 1094 if (once) 1095 efi_freebsd_delenv(name); 1096 /* 1097 * We malloced 1 more than len above, then redid the call. 1098 * so now we have room at the end of the string to NUL terminate 1099 * it here, even if the typical idium would have '- 1' here to 1100 * not overflow. len should be the same on return both times. 1101 */ 1102 fn[len] = '\0'; 1103 } 1104 } else { 1105 printf( 1106 "Can't allocate %d bytes to fetch FreeBSD::%s env var\n", 1107 len, name); 1108 } 1109 } 1110 if (fn) { 1111 printf(" Reading loader env vars from %s\n", fn); 1112 parse_loader_efi_config(boot_img->DeviceHandle, fn); 1113 } 1114 } 1115 1116 caddr_t 1117 ptov(uintptr_t x) 1118 { 1119 return ((caddr_t)x); 1120 } 1121 1122 static void 1123 acpi_detect(void) 1124 { 1125 char buf[24]; 1126 int revision; 1127 1128 feature_enable(FEATURE_EARLY_ACPI); 1129 if ((rsdp = efi_get_table(&acpi20)) == NULL) 1130 if ((rsdp = efi_get_table(&acpi)) == NULL) 1131 return; 1132 1133 sprintf(buf, "0x%016"PRIxPTR, (uintptr_t)rsdp); 1134 setenv("acpi.rsdp", buf, 1); 1135 revision = rsdp->Revision; 1136 if (revision == 0) 1137 revision = 1; 1138 sprintf(buf, "%d", revision); 1139 setenv("acpi.revision", buf, 1); 1140 strncpy(buf, rsdp->OemId, sizeof(rsdp->OemId)); 1141 buf[sizeof(rsdp->OemId)] = '\0'; 1142 setenv("acpi.oem", buf, 1); 1143 sprintf(buf, "0x%016x", rsdp->RsdtPhysicalAddress); 1144 setenv("acpi.rsdt", buf, 1); 1145 if (revision >= 2) { 1146 /* XXX extended checksum? */ 1147 sprintf(buf, "0x%016llx", 1148 (unsigned long long)rsdp->XsdtPhysicalAddress); 1149 setenv("acpi.xsdt", buf, 1); 1150 sprintf(buf, "%d", rsdp->Length); 1151 setenv("acpi.xsdt_length", buf, 1); 1152 } 1153 } 1154 1155 EFI_STATUS 1156 main(int argc, CHAR16 *argv[]) 1157 { 1158 EFI_GUID *guid; 1159 int howto, i, uhowto; 1160 UINTN k; 1161 bool has_kbd, is_last; 1162 char *s; 1163 EFI_DEVICE_PATH *imgpath; 1164 CHAR16 *text; 1165 EFI_STATUS rv; 1166 size_t sz, bosz = 0, bisz = 0; 1167 UINT16 boot_order[100]; 1168 char boot_info[4096]; 1169 char buf[32]; 1170 bool uefi_boot_mgr; 1171 1172 archsw.arch_autoload = efi_autoload; 1173 archsw.arch_getdev = efi_getdev; 1174 archsw.arch_copyin = efi_copyin; 1175 archsw.arch_copyout = efi_copyout; 1176 #if defined(__amd64__) || defined(__i386__) 1177 archsw.arch_hypervisor = x86_hypervisor; 1178 #endif 1179 archsw.arch_readin = efi_readin; 1180 archsw.arch_zfs_probe = efi_zfs_probe; 1181 1182 #if !defined(__arm__) 1183 for (k = 0; k < ST->NumberOfTableEntries; k++) { 1184 guid = &ST->ConfigurationTable[k].VendorGuid; 1185 if (!memcmp(guid, &smbios, sizeof(EFI_GUID)) || 1186 !memcmp(guid, &smbios3, sizeof(EFI_GUID))) { 1187 char buf[40]; 1188 1189 snprintf(buf, sizeof(buf), "%p", 1190 ST->ConfigurationTable[k].VendorTable); 1191 setenv("hint.smbios.0.mem", buf, 1); 1192 smbios_detect(ST->ConfigurationTable[k].VendorTable); 1193 break; 1194 } 1195 } 1196 #endif 1197 1198 /* Get our loaded image protocol interface structure. */ 1199 (void) OpenProtocolByHandle(IH, &imgid, (void **)&boot_img); 1200 1201 /* Report the RSDP early. */ 1202 acpi_detect(); 1203 1204 /* 1205 * Chicken-and-egg problem; we want to have console output early, but 1206 * some console attributes may depend on reading from eg. the boot 1207 * device, which we can't do yet. We can use printf() etc. once this is 1208 * done. So, we set it to the efi console, then call console init. This 1209 * gets us printf early, but also primes the pump for all future console 1210 * changes to take effect, regardless of where they come from. 1211 */ 1212 setenv("console", "efi", 1); 1213 uhowto = parse_uefi_con_out(); 1214 #if defined(__riscv) 1215 /* 1216 * This workaround likely is papering over a real issue 1217 */ 1218 if ((uhowto & RB_SERIAL) != 0) 1219 setenv("console", "comconsole", 1); 1220 #endif 1221 cons_probe(); 1222 1223 /* Set up currdev variable to have hooks in place. */ 1224 env_setenv("currdev", EV_VOLATILE, "", gen_setcurrdev, env_nounset); 1225 1226 /* Init the time source */ 1227 efi_time_init(); 1228 1229 /* 1230 * Initialise the block cache. Set the upper limit. 1231 */ 1232 bcache_init(32768, 512); 1233 1234 /* 1235 * Scan the BLOCK IO MEDIA handles then 1236 * march through the device switch probing for things. 1237 */ 1238 i = efipart_inithandles(); 1239 if (i != 0 && i != ENOENT) { 1240 printf("efipart_inithandles failed with ERRNO %d, expect " 1241 "failures\n", i); 1242 } 1243 1244 devinit(); 1245 1246 /* 1247 * Detect console settings two different ways: one via the command 1248 * args (eg -h) or via the UEFI ConOut variable. 1249 */ 1250 has_kbd = has_keyboard(); 1251 howto = parse_args(argc, argv); 1252 if (!has_kbd && (howto & RB_PROBE)) 1253 howto |= RB_SERIAL | RB_MULTIPLE; 1254 howto &= ~RB_PROBE; 1255 1256 /* 1257 * Read additional environment variables from the boot device's 1258 * "LoaderEnv" file. Any boot loader environment variable may be set 1259 * there, which are subtly different than loader.conf variables. Only 1260 * the 'simple' ones may be set so things like foo_load="YES" won't work 1261 * for two reasons. First, the parser is simplistic and doesn't grok 1262 * quotes. Second, because the variables that cause an action to happen 1263 * are parsed by the lua, 4th or whatever code that's not yet 1264 * loaded. This is relative to the root directory when loader.efi is 1265 * loaded off the UFS root drive (when chain booted), or from the ESP 1266 * when directly loaded by the BIOS. 1267 * 1268 * We also read in NextLoaderEnv if it was specified. This allows next boot 1269 * functionality to be implemented and to override anything in LoaderEnv. 1270 */ 1271 read_loader_env("LoaderEnv", "/efi/freebsd/loader.env", false); 1272 read_loader_env("NextLoaderEnv", NULL, true); 1273 1274 /* 1275 * We now have two notions of console. howto should be viewed as 1276 * overrides. If console is already set, don't set it again. 1277 */ 1278 #define VIDEO_ONLY 0 1279 #define SERIAL_ONLY RB_SERIAL 1280 #define VID_SER_BOTH RB_MULTIPLE 1281 #define SER_VID_BOTH (RB_SERIAL | RB_MULTIPLE) 1282 #define CON_MASK (RB_SERIAL | RB_MULTIPLE) 1283 if (strcmp(getenv("console"), "efi") == 0) { 1284 if ((howto & CON_MASK) == 0) { 1285 /* No override, uhowto is controlling and efi cons is perfect */ 1286 howto = howto | (uhowto & CON_MASK); 1287 } else if ((howto & CON_MASK) == (uhowto & CON_MASK)) { 1288 /* override matches what UEFI told us, efi console is perfect */ 1289 } else if ((uhowto & (CON_MASK)) != 0) { 1290 /* 1291 * We detected a serial console on ConOut. All possible 1292 * overrides include serial. We can't really override what efi 1293 * gives us, so we use it knowing it's the best choice. 1294 */ 1295 /* Do nothing */ 1296 } else { 1297 /* 1298 * We detected some kind of serial in the override, but ConOut 1299 * has no serial, so we have to sort out which case it really is. 1300 */ 1301 switch (howto & CON_MASK) { 1302 case SERIAL_ONLY: 1303 setenv("console", "comconsole", 1); 1304 break; 1305 case VID_SER_BOTH: 1306 setenv("console", "efi comconsole", 1); 1307 break; 1308 case SER_VID_BOTH: 1309 setenv("console", "comconsole efi", 1); 1310 break; 1311 /* case VIDEO_ONLY can't happen -- it's the first if above */ 1312 } 1313 } 1314 } 1315 1316 /* 1317 * howto is set now how we want to export the flags to the kernel, so 1318 * set the env based on it. 1319 */ 1320 boot_howto_to_env(howto); 1321 1322 if (efi_copy_init()) 1323 return (EFI_BUFFER_TOO_SMALL); 1324 1325 if ((s = getenv("fail_timeout")) != NULL) 1326 fail_timeout = strtol(s, NULL, 10); 1327 1328 printf("%s\n", bootprog_info); 1329 printf(" Command line arguments:"); 1330 for (i = 0; i < argc; i++) 1331 printf(" %S", argv[i]); 1332 printf("\n"); 1333 1334 printf(" Image base: 0x%lx\n", (unsigned long)boot_img->ImageBase); 1335 printf(" EFI version: %d.%02d\n", ST->Hdr.Revision >> 16, 1336 ST->Hdr.Revision & 0xffff); 1337 printf(" EFI Firmware: %S (rev %d.%02d)\n", ST->FirmwareVendor, 1338 ST->FirmwareRevision >> 16, ST->FirmwareRevision & 0xffff); 1339 printf(" Console: %s (%#x)\n", getenv("console"), howto); 1340 1341 /* Determine the devpath of our image so we can prefer it. */ 1342 text = efi_devpath_name(boot_img->FilePath); 1343 if (text != NULL) { 1344 printf(" Load Path: %S\n", text); 1345 efi_setenv_freebsd_wcs("LoaderPath", text); 1346 efi_free_devpath_name(text); 1347 } 1348 1349 rv = OpenProtocolByHandle(boot_img->DeviceHandle, &devid, 1350 (void **)&imgpath); 1351 if (rv == EFI_SUCCESS) { 1352 text = efi_devpath_name(imgpath); 1353 if (text != NULL) { 1354 printf(" Load Device: %S\n", text); 1355 efi_setenv_freebsd_wcs("LoaderDev", text); 1356 efi_free_devpath_name(text); 1357 } 1358 } 1359 1360 if (getenv("uefi_ignore_boot_mgr") != NULL) { 1361 printf(" Ignoring UEFI boot manager\n"); 1362 uefi_boot_mgr = false; 1363 } else { 1364 uefi_boot_mgr = true; 1365 boot_current = 0; 1366 sz = sizeof(boot_current); 1367 rv = efi_global_getenv("BootCurrent", &boot_current, &sz); 1368 if (rv == EFI_SUCCESS) 1369 printf(" BootCurrent: %04x\n", boot_current); 1370 else { 1371 boot_current = 0xffff; 1372 uefi_boot_mgr = false; 1373 } 1374 1375 sz = sizeof(boot_order); 1376 rv = efi_global_getenv("BootOrder", &boot_order, &sz); 1377 if (rv == EFI_SUCCESS) { 1378 printf(" BootOrder:"); 1379 for (i = 0; i < sz / sizeof(boot_order[0]); i++) 1380 printf(" %04x%s", boot_order[i], 1381 boot_order[i] == boot_current ? "[*]" : ""); 1382 printf("\n"); 1383 is_last = boot_order[(sz / sizeof(boot_order[0])) - 1] == boot_current; 1384 bosz = sz; 1385 } else if (uefi_boot_mgr) { 1386 /* 1387 * u-boot doesn't set BootOrder, but otherwise participates in the 1388 * boot manager protocol. So we fake it here and don't consider it 1389 * a failure. 1390 */ 1391 bosz = sizeof(boot_order[0]); 1392 boot_order[0] = boot_current; 1393 is_last = true; 1394 } 1395 } 1396 1397 /* 1398 * Next, find the boot info structure the UEFI boot manager is 1399 * supposed to setup. We need this so we can walk through it to 1400 * find where we are in the booting process and what to try to 1401 * boot next. 1402 */ 1403 if (uefi_boot_mgr) { 1404 snprintf(buf, sizeof(buf), "Boot%04X", boot_current); 1405 sz = sizeof(boot_info); 1406 rv = efi_global_getenv(buf, &boot_info, &sz); 1407 if (rv == EFI_SUCCESS) 1408 bisz = sz; 1409 else 1410 uefi_boot_mgr = false; 1411 } 1412 1413 /* 1414 * Disable the watchdog timer. By default the boot manager sets 1415 * the timer to 5 minutes before invoking a boot option. If we 1416 * want to return to the boot manager, we have to disable the 1417 * watchdog timer and since we're an interactive program, we don't 1418 * want to wait until the user types "quit". The timer may have 1419 * fired by then. We don't care if this fails. It does not prevent 1420 * normal functioning in any way... 1421 */ 1422 BS->SetWatchdogTimer(0, 0, 0, NULL); 1423 1424 /* 1425 * Initialize the trusted/forbidden certificates from UEFI. 1426 * They will be later used to verify the manifest(s), 1427 * which should contain hashes of verified files. 1428 * This needs to be initialized before any configuration files 1429 * are loaded. 1430 */ 1431 #ifdef EFI_SECUREBOOT 1432 ve_efi_init(); 1433 #endif 1434 1435 /* 1436 * Try and find a good currdev based on the image that was booted. 1437 * It might be desirable here to have a short pause to allow falling 1438 * through to the boot loader instead of returning instantly to follow 1439 * the boot protocol and also allow an escape hatch for users wishing 1440 * to try something different. 1441 */ 1442 if (find_currdev(uefi_boot_mgr, is_last, boot_info, bisz) != 0) 1443 if (uefi_boot_mgr && 1444 !interactive_interrupt("Failed to find bootable partition")) 1445 return (EFI_NOT_FOUND); 1446 1447 autoload_font(false); /* Set up the font list for console. */ 1448 efi_init_environment(); 1449 1450 interact(); /* doesn't return */ 1451 1452 return (EFI_SUCCESS); /* keep compiler happy */ 1453 } 1454 1455 COMMAND_SET(efi_seed_entropy, "efi-seed-entropy", "try to get entropy from the EFI RNG", command_seed_entropy); 1456 1457 static int 1458 command_seed_entropy(int argc, char *argv[]) 1459 { 1460 EFI_STATUS status; 1461 EFI_RNG_PROTOCOL *rng; 1462 unsigned int size_efi = RANDOM_FORTUNA_DEFPOOLSIZE * RANDOM_FORTUNA_NPOOLS; 1463 unsigned int size = RANDOM_FORTUNA_DEFPOOLSIZE * RANDOM_FORTUNA_NPOOLS; 1464 void *buf_efi; 1465 void *buf; 1466 1467 if (argc > 1) { 1468 size_efi = strtol(argv[1], NULL, 0); 1469 1470 /* Don't *compress* the entropy we get from EFI. */ 1471 if (size_efi > size) 1472 size = size_efi; 1473 1474 /* 1475 * If the amount of entropy we get from EFI is less than the 1476 * size of a single Fortuna pool -- i.e. not enough to ensure 1477 * that Fortuna is safely seeded -- don't expand it since we 1478 * don't want to trick Fortuna into thinking that it has been 1479 * safely seeded when it has not. 1480 */ 1481 if (size_efi < RANDOM_FORTUNA_DEFPOOLSIZE) 1482 size = size_efi; 1483 } 1484 1485 status = BS->LocateProtocol(&rng_guid, NULL, (VOID **)&rng); 1486 if (status != EFI_SUCCESS) { 1487 command_errmsg = "RNG protocol not found"; 1488 return (CMD_ERROR); 1489 } 1490 1491 if ((buf = malloc(size)) == NULL) { 1492 command_errmsg = "out of memory"; 1493 return (CMD_ERROR); 1494 } 1495 1496 if ((buf_efi = malloc(size_efi)) == NULL) { 1497 free(buf); 1498 command_errmsg = "out of memory"; 1499 return (CMD_ERROR); 1500 } 1501 1502 TSENTER2("rng->GetRNG"); 1503 status = rng->GetRNG(rng, NULL, size_efi, (UINT8 *)buf_efi); 1504 TSEXIT(); 1505 if (status != EFI_SUCCESS) { 1506 free(buf_efi); 1507 free(buf); 1508 command_errmsg = "GetRNG failed"; 1509 return (CMD_ERROR); 1510 } 1511 if (size_efi < size) 1512 pkcs5v2_genkey_raw(buf, size, "", 0, buf_efi, size_efi, 1); 1513 else 1514 memcpy(buf, buf_efi, size); 1515 1516 if (file_addbuf("efi_rng_seed", "boot_entropy_platform", size, buf) != 0) { 1517 free(buf_efi); 1518 free(buf); 1519 return (CMD_ERROR); 1520 } 1521 1522 explicit_bzero(buf_efi, size_efi); 1523 free(buf_efi); 1524 free(buf); 1525 return (CMD_OK); 1526 } 1527 1528 COMMAND_SET(poweroff, "poweroff", "power off the system", command_poweroff); 1529 1530 static int 1531 command_poweroff(int argc __unused, char *argv[] __unused) 1532 { 1533 int i; 1534 1535 for (i = 0; devsw[i] != NULL; ++i) 1536 if (devsw[i]->dv_cleanup != NULL) 1537 (devsw[i]->dv_cleanup)(); 1538 1539 RS->ResetSystem(EfiResetShutdown, EFI_SUCCESS, 0, NULL); 1540 1541 /* NOTREACHED */ 1542 return (CMD_ERROR); 1543 } 1544 1545 COMMAND_SET(reboot, "reboot", "reboot the system", command_reboot); 1546 1547 static int 1548 command_reboot(int argc, char *argv[]) 1549 { 1550 int i; 1551 1552 for (i = 0; devsw[i] != NULL; ++i) 1553 if (devsw[i]->dv_cleanup != NULL) 1554 (devsw[i]->dv_cleanup)(); 1555 1556 RS->ResetSystem(EfiResetCold, EFI_SUCCESS, 0, NULL); 1557 1558 /* NOTREACHED */ 1559 return (CMD_ERROR); 1560 } 1561 1562 COMMAND_SET(memmap, "memmap", "print memory map", command_memmap); 1563 1564 static int 1565 command_memmap(int argc __unused, char *argv[] __unused) 1566 { 1567 UINTN sz; 1568 EFI_MEMORY_DESCRIPTOR *map, *p; 1569 UINTN key, dsz; 1570 UINT32 dver; 1571 EFI_STATUS status; 1572 int i, ndesc; 1573 char line[80]; 1574 1575 sz = 0; 1576 status = BS->GetMemoryMap(&sz, 0, &key, &dsz, &dver); 1577 if (status != EFI_BUFFER_TOO_SMALL) { 1578 printf("Can't determine memory map size\n"); 1579 return (CMD_ERROR); 1580 } 1581 map = malloc(sz); 1582 status = BS->GetMemoryMap(&sz, map, &key, &dsz, &dver); 1583 if (EFI_ERROR(status)) { 1584 printf("Can't read memory map\n"); 1585 return (CMD_ERROR); 1586 } 1587 1588 ndesc = sz / dsz; 1589 snprintf(line, sizeof(line), "%23s %12s %12s %8s %4s\n", 1590 "Type", "Physical", "Virtual", "#Pages", "Attr"); 1591 pager_open(); 1592 if (pager_output(line)) { 1593 pager_close(); 1594 return (CMD_OK); 1595 } 1596 1597 for (i = 0, p = map; i < ndesc; 1598 i++, p = NextMemoryDescriptor(p, dsz)) { 1599 snprintf(line, sizeof(line), "%23s %012jx %012jx %08jx ", 1600 efi_memory_type(p->Type), (uintmax_t)p->PhysicalStart, 1601 (uintmax_t)p->VirtualStart, (uintmax_t)p->NumberOfPages); 1602 if (pager_output(line)) 1603 break; 1604 1605 if (p->Attribute & EFI_MEMORY_UC) 1606 printf("UC "); 1607 if (p->Attribute & EFI_MEMORY_WC) 1608 printf("WC "); 1609 if (p->Attribute & EFI_MEMORY_WT) 1610 printf("WT "); 1611 if (p->Attribute & EFI_MEMORY_WB) 1612 printf("WB "); 1613 if (p->Attribute & EFI_MEMORY_UCE) 1614 printf("UCE "); 1615 if (p->Attribute & EFI_MEMORY_WP) 1616 printf("WP "); 1617 if (p->Attribute & EFI_MEMORY_RP) 1618 printf("RP "); 1619 if (p->Attribute & EFI_MEMORY_XP) 1620 printf("XP "); 1621 if (p->Attribute & EFI_MEMORY_NV) 1622 printf("NV "); 1623 if (p->Attribute & EFI_MEMORY_MORE_RELIABLE) 1624 printf("MR "); 1625 if (p->Attribute & EFI_MEMORY_RO) 1626 printf("RO "); 1627 if (pager_output("\n")) 1628 break; 1629 } 1630 1631 pager_close(); 1632 return (CMD_OK); 1633 } 1634 1635 COMMAND_SET(configuration, "configuration", "print configuration tables", 1636 command_configuration); 1637 1638 static int 1639 command_configuration(int argc, char *argv[]) 1640 { 1641 UINTN i; 1642 char *name; 1643 1644 printf("NumberOfTableEntries=%lu\n", 1645 (unsigned long)ST->NumberOfTableEntries); 1646 1647 for (i = 0; i < ST->NumberOfTableEntries; i++) { 1648 EFI_GUID *guid; 1649 1650 printf(" "); 1651 guid = &ST->ConfigurationTable[i].VendorGuid; 1652 1653 if (efi_guid_to_name(guid, &name) == true) { 1654 printf(name); 1655 free(name); 1656 } else { 1657 printf("Error while translating UUID to name"); 1658 } 1659 printf(" at %p\n", ST->ConfigurationTable[i].VendorTable); 1660 } 1661 1662 return (CMD_OK); 1663 } 1664 1665 1666 COMMAND_SET(mode, "mode", "change or display EFI text modes", command_mode); 1667 1668 static int 1669 command_mode(int argc, char *argv[]) 1670 { 1671 UINTN cols, rows; 1672 unsigned int mode; 1673 int i; 1674 char *cp; 1675 EFI_STATUS status; 1676 SIMPLE_TEXT_OUTPUT_INTERFACE *conout; 1677 1678 conout = ST->ConOut; 1679 1680 if (argc > 1) { 1681 mode = strtol(argv[1], &cp, 0); 1682 if (cp[0] != '\0') { 1683 printf("Invalid mode\n"); 1684 return (CMD_ERROR); 1685 } 1686 status = conout->QueryMode(conout, mode, &cols, &rows); 1687 if (EFI_ERROR(status)) { 1688 printf("invalid mode %d\n", mode); 1689 return (CMD_ERROR); 1690 } 1691 status = conout->SetMode(conout, mode); 1692 if (EFI_ERROR(status)) { 1693 printf("couldn't set mode %d\n", mode); 1694 return (CMD_ERROR); 1695 } 1696 (void) cons_update_mode(true); 1697 return (CMD_OK); 1698 } 1699 1700 printf("Current mode: %d\n", conout->Mode->Mode); 1701 for (i = 0; i <= conout->Mode->MaxMode; i++) { 1702 status = conout->QueryMode(conout, i, &cols, &rows); 1703 if (EFI_ERROR(status)) 1704 continue; 1705 printf("Mode %d: %u columns, %u rows\n", i, (unsigned)cols, 1706 (unsigned)rows); 1707 } 1708 1709 if (i != 0) 1710 printf("Select a mode with the command \"mode <number>\"\n"); 1711 1712 return (CMD_OK); 1713 } 1714 1715 COMMAND_SET(lsefi, "lsefi", "list EFI handles", command_lsefi); 1716 1717 static void 1718 lsefi_print_handle_info(EFI_HANDLE handle) 1719 { 1720 EFI_DEVICE_PATH *devpath; 1721 EFI_DEVICE_PATH *imagepath; 1722 CHAR16 *dp_name; 1723 1724 imagepath = efi_lookup_image_devpath(handle); 1725 if (imagepath != NULL) { 1726 dp_name = efi_devpath_name(imagepath); 1727 printf("Handle for image %S", dp_name); 1728 efi_free_devpath_name(dp_name); 1729 return; 1730 } 1731 devpath = efi_lookup_devpath(handle); 1732 if (devpath != NULL) { 1733 dp_name = efi_devpath_name(devpath); 1734 printf("Handle for device %S", dp_name); 1735 efi_free_devpath_name(dp_name); 1736 return; 1737 } 1738 printf("Handle %p", handle); 1739 } 1740 1741 static int 1742 command_lsefi(int argc __unused, char *argv[] __unused) 1743 { 1744 char *name; 1745 EFI_HANDLE *buffer = NULL; 1746 EFI_HANDLE handle; 1747 UINTN bufsz = 0, i, j; 1748 EFI_STATUS status; 1749 int ret = 0; 1750 1751 status = BS->LocateHandle(AllHandles, NULL, NULL, &bufsz, buffer); 1752 if (status != EFI_BUFFER_TOO_SMALL) { 1753 snprintf(command_errbuf, sizeof (command_errbuf), 1754 "unexpected error: %lld", (long long)status); 1755 return (CMD_ERROR); 1756 } 1757 if ((buffer = malloc(bufsz)) == NULL) { 1758 sprintf(command_errbuf, "out of memory"); 1759 return (CMD_ERROR); 1760 } 1761 1762 status = BS->LocateHandle(AllHandles, NULL, NULL, &bufsz, buffer); 1763 if (EFI_ERROR(status)) { 1764 free(buffer); 1765 snprintf(command_errbuf, sizeof (command_errbuf), 1766 "LocateHandle() error: %lld", (long long)status); 1767 return (CMD_ERROR); 1768 } 1769 1770 pager_open(); 1771 for (i = 0; i < (bufsz / sizeof (EFI_HANDLE)); i++) { 1772 UINTN nproto = 0; 1773 EFI_GUID **protocols = NULL; 1774 1775 handle = buffer[i]; 1776 lsefi_print_handle_info(handle); 1777 if (pager_output("\n")) 1778 break; 1779 /* device path */ 1780 1781 status = BS->ProtocolsPerHandle(handle, &protocols, &nproto); 1782 if (EFI_ERROR(status)) { 1783 snprintf(command_errbuf, sizeof (command_errbuf), 1784 "ProtocolsPerHandle() error: %lld", 1785 (long long)status); 1786 continue; 1787 } 1788 1789 for (j = 0; j < nproto; j++) { 1790 if (efi_guid_to_name(protocols[j], &name) == true) { 1791 printf(" %s", name); 1792 free(name); 1793 } else { 1794 printf("Error while translating UUID to name"); 1795 } 1796 if ((ret = pager_output("\n")) != 0) 1797 break; 1798 } 1799 BS->FreePool(protocols); 1800 if (ret != 0) 1801 break; 1802 } 1803 pager_close(); 1804 free(buffer); 1805 return (CMD_OK); 1806 } 1807 1808 #ifdef LOADER_FDT_SUPPORT 1809 extern int command_fdt_internal(int argc, char *argv[]); 1810 1811 /* 1812 * Since proper fdt command handling function is defined in fdt_loader_cmd.c, 1813 * and declaring it as extern is in contradiction with COMMAND_SET() macro 1814 * (which uses static pointer), we're defining wrapper function, which 1815 * calls the proper fdt handling routine. 1816 */ 1817 static int 1818 command_fdt(int argc, char *argv[]) 1819 { 1820 1821 return (command_fdt_internal(argc, argv)); 1822 } 1823 1824 COMMAND_SET(fdt, "fdt", "flattened device tree handling", command_fdt); 1825 #endif 1826 1827 /* 1828 * Chain load another efi loader. 1829 */ 1830 static int 1831 command_chain(int argc, char *argv[]) 1832 { 1833 EFI_GUID LoadedImageGUID = LOADED_IMAGE_PROTOCOL; 1834 EFI_HANDLE loaderhandle; 1835 EFI_LOADED_IMAGE *loaded_image; 1836 EFI_STATUS status; 1837 struct stat st; 1838 struct devdesc *dev; 1839 char *name, *path; 1840 void *buf; 1841 int fd; 1842 1843 if (argc < 2) { 1844 command_errmsg = "wrong number of arguments"; 1845 return (CMD_ERROR); 1846 } 1847 1848 name = argv[1]; 1849 1850 if ((fd = open(name, O_RDONLY)) < 0) { 1851 command_errmsg = "no such file"; 1852 return (CMD_ERROR); 1853 } 1854 1855 #ifdef LOADER_VERIEXEC 1856 if (verify_file(fd, name, 0, VE_MUST, __func__) < 0) { 1857 sprintf(command_errbuf, "can't verify: %s", name); 1858 close(fd); 1859 return (CMD_ERROR); 1860 } 1861 #endif 1862 1863 if (fstat(fd, &st) < -1) { 1864 command_errmsg = "stat failed"; 1865 close(fd); 1866 return (CMD_ERROR); 1867 } 1868 1869 status = BS->AllocatePool(EfiLoaderCode, (UINTN)st.st_size, &buf); 1870 if (status != EFI_SUCCESS) { 1871 command_errmsg = "failed to allocate buffer"; 1872 close(fd); 1873 return (CMD_ERROR); 1874 } 1875 if (read(fd, buf, st.st_size) != st.st_size) { 1876 command_errmsg = "error while reading the file"; 1877 (void)BS->FreePool(buf); 1878 close(fd); 1879 return (CMD_ERROR); 1880 } 1881 close(fd); 1882 status = BS->LoadImage(FALSE, IH, NULL, buf, st.st_size, &loaderhandle); 1883 (void)BS->FreePool(buf); 1884 if (status != EFI_SUCCESS) { 1885 command_errmsg = "LoadImage failed"; 1886 return (CMD_ERROR); 1887 } 1888 status = OpenProtocolByHandle(loaderhandle, &LoadedImageGUID, 1889 (void **)&loaded_image); 1890 1891 if (argc > 2) { 1892 int i, len = 0; 1893 CHAR16 *argp; 1894 1895 for (i = 2; i < argc; i++) 1896 len += strlen(argv[i]) + 1; 1897 1898 len *= sizeof (*argp); 1899 loaded_image->LoadOptions = argp = malloc (len); 1900 loaded_image->LoadOptionsSize = len; 1901 for (i = 2; i < argc; i++) { 1902 char *ptr = argv[i]; 1903 while (*ptr) 1904 *(argp++) = *(ptr++); 1905 *(argp++) = ' '; 1906 } 1907 *(--argv) = 0; 1908 } 1909 1910 if (efi_getdev((void **)&dev, name, (const char **)&path) == 0) { 1911 #ifdef EFI_ZFS_BOOT 1912 struct zfs_devdesc *z_dev; 1913 #endif 1914 struct disk_devdesc *d_dev; 1915 pdinfo_t *hd, *pd; 1916 1917 switch (dev->d_dev->dv_type) { 1918 #ifdef EFI_ZFS_BOOT 1919 case DEVT_ZFS: 1920 z_dev = (struct zfs_devdesc *)dev; 1921 loaded_image->DeviceHandle = 1922 efizfs_get_handle_by_guid(z_dev->pool_guid); 1923 break; 1924 #endif 1925 case DEVT_NET: 1926 loaded_image->DeviceHandle = 1927 efi_find_handle(dev->d_dev, dev->d_unit); 1928 break; 1929 default: 1930 hd = efiblk_get_pdinfo(dev); 1931 if (STAILQ_EMPTY(&hd->pd_part)) { 1932 loaded_image->DeviceHandle = hd->pd_handle; 1933 break; 1934 } 1935 d_dev = (struct disk_devdesc *)dev; 1936 STAILQ_FOREACH(pd, &hd->pd_part, pd_link) { 1937 /* 1938 * d_partition should be 255 1939 */ 1940 if (pd->pd_unit == (uint32_t)d_dev->d_slice) { 1941 loaded_image->DeviceHandle = 1942 pd->pd_handle; 1943 break; 1944 } 1945 } 1946 break; 1947 } 1948 } 1949 1950 dev_cleanup(); 1951 status = BS->StartImage(loaderhandle, NULL, NULL); 1952 if (status != EFI_SUCCESS) { 1953 command_errmsg = "StartImage failed"; 1954 free(loaded_image->LoadOptions); 1955 loaded_image->LoadOptions = NULL; 1956 status = BS->UnloadImage(loaded_image); 1957 return (CMD_ERROR); 1958 } 1959 1960 return (CMD_ERROR); /* not reached */ 1961 } 1962 1963 COMMAND_SET(chain, "chain", "chain load file", command_chain); 1964 1965 #if defined(LOADER_NET_SUPPORT) 1966 extern struct in_addr servip; 1967 static int 1968 command_netserver(int argc, char *argv[]) 1969 { 1970 char *proto; 1971 n_long rootaddr; 1972 1973 if (argc > 2) { 1974 command_errmsg = "wrong number of arguments"; 1975 return (CMD_ERROR); 1976 } 1977 if (argc < 2) { 1978 proto = netproto == NET_TFTP ? "tftp://" : "nfs://"; 1979 printf("Netserver URI: %s%s%s\n", proto, intoa(rootip.s_addr), 1980 rootpath); 1981 return (CMD_OK); 1982 } 1983 if (argc == 2) { 1984 strncpy(rootpath, argv[1], sizeof(rootpath)); 1985 rootpath[sizeof(rootpath) -1] = '\0'; 1986 if ((rootaddr = net_parse_rootpath()) != INADDR_NONE) 1987 servip.s_addr = rootip.s_addr = rootaddr; 1988 return (CMD_OK); 1989 } 1990 return (CMD_ERROR); /* not reached */ 1991 1992 } 1993 1994 COMMAND_SET(netserver, "netserver", "change or display netserver URI", 1995 command_netserver); 1996 #endif 1997