2 * Copyright (c) 1998 Robert Nordier
5 * Redistribution and use in source and binary forms are freely
6 * permitted provided that the above copyright notice and this
7 * paragraph and the following disclaimer are duplicated in all
10 * This software is provided "AS IS" and without any express or
11 * implied warranties, including, without limitation, the implied
12 * warranties of merchantability and fitness for a particular
16 #include <sys/cdefs.h>
17 __FBSDID("$FreeBSD$");
21 #include <sys/param.h>
22 #include <sys/errno.h>
23 #include <sys/diskmbr.h>
27 #include <sys/reboot.h>
28 #include <sys/queue.h>
30 #include <machine/bootinfo.h>
31 #include <machine/elf.h>
32 #include <machine/pc/bios.h>
55 #define BIOS_NUMDRIVES 0x475
61 #define TYPE_MAXHARD TYPE_DA
64 #define DEV_GELIBOOT_BSIZE 4096
69 static const uuid_t freebsd_zfs_uuid = GPT_ENT_TYPE_FREEBSD_ZFS;
71 static const char optstr[NOPT] = "DhaCcdgmnpqrsv"; /* Also 'P', 'S' */
72 static const unsigned char flags[NOPT] = {
90 static const unsigned char dev_maj[NDEV] = {30, 4, 2};
93 static char cmddup[512];
94 static char kname[1024];
95 static char rootname[256];
96 static int comspeed = SIOSPD;
97 static struct bootinfo bootinfo;
98 static uint32_t bootdev;
99 static struct zfs_boot_args zfsargs;
101 vm_offset_t high_heap_base;
102 uint32_t bios_basemem, bios_extmem, high_heap_size;
104 static struct bios_smap smap;
107 * The minimum amount of memory to reserve in bios_extmem for the heap.
109 #define HEAP_MIN (64 * 1024 * 1024)
111 static char *heap_next;
112 static char *heap_end;
114 /* Buffers that must not span a 64k boundary. */
115 #define READ_BUF_SIZE 8192
117 char rdbuf[READ_BUF_SIZE]; /* for reading large things */
118 char secbuf[READ_BUF_SIZE]; /* for MBR/disklabel */
120 static struct dmadat *dmadat;
124 static void load(void);
125 static int parse_cmd(void);
126 static void bios_getmem(void);
129 #ifdef LOADER_GELI_SUPPORT
130 #include "geliboot.c"
131 static char gelipw[GELI_PW_MAXLEN];
132 static struct keybuf *gelibuf;
138 * Read from a dnode (which must be from a ZPL filesystem).
141 zfs_read(spa_t *spa, const dnode_phys_t *dnode, off_t *offp, void *start, size_t size)
143 const znode_phys_t *zp = (const znode_phys_t *) dnode->dn_bonus;
148 if (*offp + n > zp->zp_size)
149 n = zp->zp_size - *offp;
151 rc = dnode_read(spa, dnode, *offp, start, n);
163 static spa_t *primary_spa;
164 static vdev_t *primary_vdev;
167 * A wrapper for dskread that doesn't have to worry about whether the
168 * buffer pointer crosses a 64k boundary.
171 vdev_read(void *xvdev, void *priv, off_t off, void *buf, size_t bytes)
174 daddr_t lba, alignlba;
176 unsigned int nb, alignnb;
177 struct dsk *dsk = (struct dsk *) priv;
179 if ((off & (DEV_BSIZE - 1)) || (bytes & (DEV_BSIZE - 1)))
183 lba = off / DEV_BSIZE;
186 * Align reads to 4k else 4k sector GELIs will not decrypt.
187 * Round LBA down to nearest multiple of DEV_GELIBOOT_BSIZE bytes.
189 alignlba = rounddown2(off, DEV_GELIBOOT_BSIZE) / DEV_BSIZE;
191 * The read must be aligned to DEV_GELIBOOT_BSIZE bytes relative to the
192 * start of the GELI partition, not the start of the actual disk.
194 alignlba += dsk->start;
195 diff = (lba - alignlba) * DEV_BSIZE;
198 nb = bytes / DEV_BSIZE;
200 * Ensure that the read size plus the leading offset does not
201 * exceed the size of the read buffer.
203 if (nb > (READ_BUF_SIZE - diff) / DEV_BSIZE)
204 nb = (READ_BUF_SIZE - diff) / DEV_BSIZE;
206 * Round the number of blocks to read up to the nearest multiple
207 * of DEV_GELIBOOT_BSIZE.
209 alignnb = roundup2(nb * DEV_BSIZE + diff, DEV_GELIBOOT_BSIZE)
212 if (dsk->size > 0 && alignlba + alignnb > dsk->size + dsk->start) {
213 printf("Shortening read at %lld from %d to %lld\n", alignlba,
214 alignnb, (dsk->size + dsk->start) - alignlba);
215 alignnb = (dsk->size + dsk->start) - alignlba;
218 if (drvread(dsk, dmadat->rdbuf, alignlba, alignnb))
220 #ifdef LOADER_GELI_SUPPORT
222 if (is_geli(dsk) == 0) {
223 if (geli_read(dsk, ((alignlba - dsk->start) *
224 DEV_BSIZE), dmadat->rdbuf, alignnb * DEV_BSIZE))
228 memcpy(p, dmadat->rdbuf + diff, nb * DEV_BSIZE);
232 bytes -= nb * DEV_BSIZE;
233 /* Don't need the leading offset after the first block. */
239 /* Match the signature exactly due to signature madness */
241 vdev_read2(vdev_t *vdev, void *priv, off_t off, void *buf, size_t bytes)
243 return vdev_read(vdev, priv, off, buf, bytes);
248 vdev_write(vdev_t *vdev, void *priv, off_t off, void *buf, size_t bytes)
253 struct dsk *dsk = (struct dsk *) priv;
255 if ((off & (DEV_BSIZE - 1)) || (bytes & (DEV_BSIZE - 1)))
259 lba = off / DEV_BSIZE;
262 nb = bytes / DEV_BSIZE;
263 if (nb > READ_BUF_SIZE / DEV_BSIZE)
264 nb = READ_BUF_SIZE / DEV_BSIZE;
265 memcpy(dmadat->rdbuf, p, nb * DEV_BSIZE);
266 if (drvwrite(dsk, dmadat->rdbuf, lba, nb))
270 bytes -= nb * DEV_BSIZE;
277 xfsread(const dnode_phys_t *dnode, off_t *offp, void *buf, size_t nbyte)
279 if ((size_t)zfs_read(spa, dnode, offp, buf, nbyte) != nbyte) {
280 printf("Invalid format\n");
287 * Read Pad2 (formerly "Boot Block Header") area of the first
288 * vdev label of the given vdev.
291 vdev_read_pad2(vdev_t *vdev, char *buf, size_t size)
294 char *tmp = zap_scratch;
295 off_t off = offsetof(vdev_label_t, vl_pad2);
297 if (size > VDEV_PAD_SIZE)
298 size = VDEV_PAD_SIZE;
301 BP_SET_LSIZE(&bp, VDEV_PAD_SIZE);
302 BP_SET_PSIZE(&bp, VDEV_PAD_SIZE);
303 BP_SET_CHECKSUM(&bp, ZIO_CHECKSUM_LABEL);
304 BP_SET_COMPRESS(&bp, ZIO_COMPRESS_OFF);
305 DVA_SET_OFFSET(BP_IDENTITY(&bp), off);
306 if (vdev_read_phys(vdev, &bp, tmp, off, 0))
308 memcpy(buf, tmp, size);
313 vdev_clear_pad2(vdev_t *vdev)
315 char *zeroes = zap_scratch;
317 off_t off = offsetof(vdev_label_t, vl_pad2);
319 memset(zeroes, 0, VDEV_PAD_SIZE);
320 end = (uint64_t *)(zeroes + VDEV_PAD_SIZE);
321 /* ZIO_CHECKSUM_LABEL magic and pre-calcualted checksum for all zeros */
322 end[-5] = 0x0210da7ab10c7a11;
323 end[-4] = 0x97f48f807f6e2a3f;
324 end[-3] = 0xaf909f1658aacefc;
325 end[-2] = 0xcbd1ea57ff6db48b;
326 end[-1] = 0x6ec692db0d465fab;
327 if (vdev_write(vdev, vdev->v_read_priv, off, zeroes, VDEV_PAD_SIZE))
337 /* Parse system memory map */
341 v86.addr = 0x15; /* int 0x15 function 0xe820*/
343 v86.ecx = sizeof(struct bios_smap);
345 v86.es = VTOPSEG(&smap);
346 v86.edi = VTOPOFF(&smap);
348 if (V86_CY(v86.efl) || (v86.eax != SMAP_SIG))
350 /* look for a low-memory segment that's large enough */
351 if ((smap.type == SMAP_TYPE_MEMORY) && (smap.base == 0) &&
352 (smap.length >= (512 * 1024)))
353 bios_basemem = smap.length;
354 /* look for the first segment in 'extended' memory */
355 if ((smap.type == SMAP_TYPE_MEMORY) && (smap.base == 0x100000)) {
356 bios_extmem = smap.length;
360 * Look for the largest segment in 'extended' memory beyond
363 if ((smap.type == SMAP_TYPE_MEMORY) && (smap.base > 0x100000) &&
364 (smap.base < 0x100000000ull)) {
368 * If this segment crosses the 4GB boundary, truncate it.
370 if (smap.base + size > 0x100000000ull)
371 size = 0x100000000ull - smap.base;
373 if (size > high_heap_size) {
374 high_heap_size = size;
375 high_heap_base = smap.base;
378 } while (v86.ebx != 0);
380 /* Fall back to the old compatibility function for base memory */
381 if (bios_basemem == 0) {
383 v86.addr = 0x12; /* int 0x12 */
386 bios_basemem = (v86.eax & 0xffff) * 1024;
389 /* Fall back through several compatibility functions for extended memory */
390 if (bios_extmem == 0) {
392 v86.addr = 0x15; /* int 0x15 function 0xe801*/
395 if (!V86_CY(v86.efl)) {
396 bios_extmem = ((v86.ecx & 0xffff) + ((v86.edx & 0xffff) * 64)) * 1024;
399 if (bios_extmem == 0) {
401 v86.addr = 0x15; /* int 0x15 function 0x88*/
404 bios_extmem = (v86.eax & 0xffff) * 1024;
408 * If we have extended memory and did not find a suitable heap
409 * region in the SMAP, use the last 3MB of 'extended' memory as a
410 * high heap candidate.
412 if (bios_extmem >= HEAP_MIN && high_heap_size < HEAP_MIN) {
413 high_heap_size = HEAP_MIN;
414 high_heap_base = bios_extmem + 0x100000 - HEAP_MIN;
419 * Try to detect a device supported by the legacy int13 BIOS
422 int13probe(int drive)
430 if (!V86_CY(v86.efl) && /* carry clear */
431 ((v86.edx & 0xff) != (drive & DRV_MASK))) { /* unit # OK */
432 if ((v86.ecx & 0x3f) == 0) { /* absurd sector size */
433 return(0); /* skip device */
441 * We call this when we find a ZFS vdev - ZFS consumes the dsk
442 * structure so we must make a new one.
445 copy_dsk(struct dsk *dsk)
449 newdsk = malloc(sizeof(struct dsk));
455 * Get disk size from eax=0x800 and 0x4800. We need to probe both
456 * because 0x4800 may not be available and we would like to get more
457 * or less correct disk size - if it is possible at all.
458 * Note we do not really want to touch drv.c because that code is shared
459 * with boot2 and we can not afford to grow that code.
462 drvsize_ext(struct dsk *dskp)
470 v86.edx = dskp->drive;
473 /* Don't error out if we get bad sector number, try EDD as well */
474 if (V86_CY(v86.efl) || /* carry set */
475 (v86.edx & 0xff) <= (unsigned)(dskp->drive & 0x7f)) /* unit # bad */
477 cyl = ((v86.ecx & 0xc0) << 2) + ((v86.ecx & 0xff00) >> 8) + 1;
478 /* Convert max head # -> # of heads */
479 hds = ((v86.edx & 0xff00) >> 8) + 1;
480 sec = v86.ecx & 0x3f;
482 size = (uint64_t)cyl * hds * sec;
484 /* Determine if we can use EDD with this device. */
488 v86.edx = dskp->drive;
491 if (V86_CY(v86.efl) || /* carry set */
492 (v86.ebx & 0xffff) != 0xaa55 || /* signature */
493 (v86.ecx & EDD_INTERFACE_FIXED_DISK) == 0)
504 * The "layered" ioctl to read disk/partition size. Unfortunately
505 * the zfsboot case is hardest, because we do not have full software
506 * stack available, so we need to do some manual work here.
509 ldi_get_size(void *priv)
511 struct dsk *dskp = priv;
512 uint64_t size = dskp->size;
514 if (dskp->start == 0)
515 size = drvsize_ext(dskp);
517 return (size * DEV_BSIZE);
521 probe_drive(struct dsk *dsk)
526 unsigned part, entries_per_sec;
529 #if defined(GPT) || defined(LOADER_GELI_SUPPORT)
533 struct dos_partition *dp;
538 * If we find a vdev on the whole disk, stop here.
540 if (vdev_probe(vdev_read2, dsk, NULL) == 0)
543 #ifdef LOADER_GELI_SUPPORT
545 * Taste the disk, if it is GELI encrypted, decrypt it and check to see if
546 * it is a usable vdev then. Otherwise dig
547 * out the partition table and probe each slice/partition
548 * in turn for a vdev or GELI encrypted vdev.
550 elba = drvsize_ext(dsk);
554 if (geli_taste(vdev_read, dsk, elba) == 0) {
555 if (geli_havekey(dsk) == 0 || geli_passphrase(gelipw, dsk->unit,
557 if (vdev_probe(vdev_read2, dsk, NULL) == 0) {
562 #endif /* LOADER_GELI_SUPPORT */
564 sec = dmadat->secbuf;
569 * First check for GPT.
571 if (drvread(dsk, sec, 1, 1)) {
574 memcpy(&hdr, sec, sizeof(hdr));
575 if (memcmp(hdr.hdr_sig, GPT_HDR_SIG, sizeof(hdr.hdr_sig)) != 0 ||
576 hdr.hdr_lba_self != 1 || hdr.hdr_revision < 0x00010000 ||
577 hdr.hdr_entsz < sizeof(*ent) || DEV_BSIZE % hdr.hdr_entsz != 0) {
582 * Probe all GPT partitions for the presence of ZFS pools. We
583 * return the spa_t for the first we find (if requested). This
584 * will have the effect of booting from the first pool on the
587 * If no vdev is found, GELI decrypting the device and try again
589 entries_per_sec = DEV_BSIZE / hdr.hdr_entsz;
590 slba = hdr.hdr_lba_table;
591 elba = slba + hdr.hdr_entries / entries_per_sec;
592 while (slba < elba) {
594 if (drvread(dsk, sec, slba, 1))
596 for (part = 0; part < entries_per_sec; part++) {
597 ent = (struct gpt_ent *)(sec + part * hdr.hdr_entsz);
598 if (memcmp(&ent->ent_type, &freebsd_zfs_uuid,
599 sizeof(uuid_t)) == 0) {
600 dsk->start = ent->ent_lba_start;
601 dsk->size = ent->ent_lba_end - ent->ent_lba_start + 1;
602 dsk->slice = part + 1;
604 if (vdev_probe(vdev_read2, dsk, NULL) == 0) {
606 * This slice had a vdev. We need a new dsk
607 * structure now since the vdev now owns this one.
611 #ifdef LOADER_GELI_SUPPORT
612 else if (geli_taste(vdev_read, dsk, ent->ent_lba_end -
613 ent->ent_lba_start) == 0) {
614 if (geli_havekey(dsk) == 0 || geli_passphrase(gelipw,
615 dsk->unit, 'p', dsk->slice, dsk) == 0) {
617 * This slice has GELI, check it for ZFS.
619 if (vdev_probe(vdev_read2, dsk, NULL) == 0) {
621 * This slice had a vdev. We need a new dsk
622 * structure now since the vdev now owns this one.
629 #endif /* LOADER_GELI_SUPPORT */
638 if (drvread(dsk, sec, DOSBBSECTOR, 1))
640 dp = (void *)(sec + DOSPARTOFF);
642 for (i = 0; i < NDOSPART; i++) {
645 dsk->start = dp[i].dp_start;
646 dsk->size = dp[i].dp_size;
648 if (vdev_probe(vdev_read2, dsk, NULL) == 0) {
651 #ifdef LOADER_GELI_SUPPORT
652 else if (geli_taste(vdev_read, dsk, dp[i].dp_size -
653 dp[i].dp_start) == 0) {
654 if (geli_havekey(dsk) == 0 || geli_passphrase(gelipw, dsk->unit,
657 * This slice has GELI, check it for ZFS.
659 if (vdev_probe(vdev_read2, dsk, NULL) == 0) {
661 * This slice had a vdev. We need a new dsk
662 * structure now since the vdev now owns this one.
669 #endif /* LOADER_GELI_SUPPORT */
683 dmadat = (void *)(roundup2(__base + (int32_t)&_end, 0x10000) - __base);
687 if (high_heap_size > 0) {
688 heap_end = PTOV(high_heap_base + high_heap_size);
689 heap_next = PTOV(high_heap_base);
691 heap_next = (char *)dmadat + sizeof(*dmadat);
692 heap_end = (char *)PTOV(bios_basemem);
694 setheap(heap_next, heap_end);
696 dsk = malloc(sizeof(struct dsk));
697 dsk->drive = *(uint8_t *)PTOV(ARGS);
698 dsk->type = dsk->drive & DRV_HARD ? TYPE_AD : TYPE_FD;
699 dsk->unit = dsk->drive & DRV_MASK;
700 dsk->slice = *(uint8_t *)PTOV(ARGS + 1) + 1;
703 dsk->size = drvsize_ext(dsk);
705 bootinfo.bi_version = BOOTINFO_VERSION;
706 bootinfo.bi_size = sizeof(bootinfo);
707 bootinfo.bi_basemem = bios_basemem / 1024;
708 bootinfo.bi_extmem = bios_extmem / 1024;
709 bootinfo.bi_memsizes_valid++;
710 bootinfo.bi_bios_dev = dsk->drive;
712 bootdev = MAKEBOOTDEV(dev_maj[dsk->type],
713 dsk->slice, dsk->unit, dsk->part);
715 /* Process configuration file */
719 #ifdef LOADER_GELI_SUPPORT
725 * Probe the boot drive first - we will try to boot from whatever
726 * pool we find on that drive.
731 * Probe the rest of the drives that the bios knows about. This
732 * will find any other available pools and it may fill in missing
733 * vdevs for the boot pool.
736 for (i = 0; i < *(unsigned char *)PTOV(BIOS_NUMDRIVES); i++)
738 for (i = 0; i < MAXBDDEV; i++)
741 if ((i | DRV_HARD) == *(uint8_t *)PTOV(ARGS))
744 if (!int13probe(i | DRV_HARD))
747 dsk = malloc(sizeof(struct dsk));
748 dsk->drive = i | DRV_HARD;
749 dsk->type = dsk->drive & TYPE_AD;
754 dsk->size = drvsize_ext(dsk);
759 * The first discovered pool, if any, is the pool.
761 spa = spa_get_primary();
763 printf("%s: No ZFS pools located, can't boot\n", BOOTPROG);
769 primary_vdev = spa_get_primary_vdev(spa);
772 rc = vdev_read_pad2(primary_vdev, cmd, sizeof(cmd));
773 if (vdev_clear_pad2(primary_vdev))
774 printf("failed to clear pad2 area of primary vdev\n");
778 * We could find an old-style ZFS Boot Block header here.
781 if (*(uint64_t *)cmd != 0x2f5b007b10c) {
783 * Note that parse() is destructive to cmd[] and we also want
784 * to honor RBX_QUIET option that could be present in cmd[].
787 memcpy(cmddup, cmd, sizeof(cmd));
789 printf("failed to parse pad2 area of primary vdev\n");
792 if (!OPT_CHECK(RBX_QUIET))
793 printf("zfs nextboot: %s\n", cmddup);
795 /* Do not process this command twice */
799 printf("failed to read pad2 area of primary vdev\n");
801 /* Mount ZFS only if it's not already mounted via nextboot parsing. */
802 if (zfsmount.spa == NULL &&
803 (zfs_spa_init(spa) != 0 || zfs_mount(spa, 0, &zfsmount) != 0)) {
804 printf("%s: failed to mount default pool %s\n",
805 BOOTPROG, spa->spa_name);
807 } else if (zfs_lookup(&zfsmount, PATH_CONFIG, &dn) == 0 ||
808 zfs_lookup(&zfsmount, PATH_DOTCONFIG, &dn) == 0) {
810 zfs_read(spa, &dn, &off, cmd, sizeof(cmd));
815 * Note that parse_cmd() is destructive to cmd[] and we also want
816 * to honor RBX_QUIET option that could be present in cmd[].
818 memcpy(cmddup, cmd, sizeof(cmd));
821 if (!OPT_CHECK(RBX_QUIET))
822 printf("%s: %s\n", PATH_CONFIG, cmddup);
823 /* Do not process this command twice */
827 /* Do not risk waiting at the prompt forever. */
828 if (nextboot && !autoboot)
832 * Try to exec /boot/loader. If interrupted by a keypress,
833 * or in case of failure, try to load a kernel directly instead.
836 if (autoboot && !*kname) {
837 memcpy(kname, PATH_LOADER_ZFS, sizeof(PATH_LOADER_ZFS));
840 memcpy(kname, PATH_KERNEL, sizeof(PATH_KERNEL));
844 /* Present the user with the boot2 prompt. */
847 if (!autoboot || !OPT_CHECK(RBX_QUIET)) {
848 printf("\nFreeBSD/x86 boot\n");
849 if (zfs_rlookup(spa, zfsmount.rootobj, rootname) != 0)
850 printf("Default: %s/<0x%llx>:%s\n"
852 spa->spa_name, zfsmount.rootobj, kname);
853 else if (rootname[0] != '\0')
854 printf("Default: %s/%s:%s\n"
856 spa->spa_name, rootname, kname);
858 printf("Default: %s:%s\n"
860 spa->spa_name, kname);
862 if (ioctrl & IO_SERIAL)
864 if (!autoboot || keyhit(5))
865 getstr(cmd, sizeof(cmd));
866 else if (!autoboot || !OPT_CHECK(RBX_QUIET))
876 /* XXX - Needed for btxld to link the boot2 binary; do not remove. */
896 static Elf32_Phdr ep[2];
897 static Elf32_Shdr es[2];
904 if (zfs_lookup(&zfsmount, kname, &dn)) {
905 printf("\nCan't find %s\n", kname);
909 if (xfsread(&dn, &off, &hdr, sizeof(hdr)))
911 if (N_GETMAGIC(hdr.ex) == ZMAGIC)
913 else if (IS_ELF(hdr.eh))
916 printf("Invalid %s\n", "format");
920 addr = hdr.ex.a_entry & 0xffffff;
923 if (xfsread(&dn, &off, p, hdr.ex.a_text))
925 p += roundup2(hdr.ex.a_text, PAGE_SIZE);
926 if (xfsread(&dn, &off, p, hdr.ex.a_data))
928 p += hdr.ex.a_data + roundup2(hdr.ex.a_bss, PAGE_SIZE);
929 bootinfo.bi_symtab = VTOP(p);
930 memcpy(p, &hdr.ex.a_syms, sizeof(hdr.ex.a_syms));
931 p += sizeof(hdr.ex.a_syms);
933 if (xfsread(&dn, &off, p, hdr.ex.a_syms))
936 if (xfsread(&dn, &off, p, sizeof(int)))
941 if (xfsread(&dn, &off, p, x))
946 off = hdr.eh.e_phoff;
947 for (j = i = 0; i < hdr.eh.e_phnum && j < 2; i++) {
948 if (xfsread(&dn, &off, ep + j, sizeof(ep[0])))
950 if (ep[j].p_type == PT_LOAD)
953 for (i = 0; i < 2; i++) {
954 p = PTOV(ep[i].p_paddr & 0xffffff);
955 off = ep[i].p_offset;
956 if (xfsread(&dn, &off, p, ep[i].p_filesz))
959 p += roundup2(ep[1].p_memsz, PAGE_SIZE);
960 bootinfo.bi_symtab = VTOP(p);
961 if (hdr.eh.e_shnum == hdr.eh.e_shstrndx + 3) {
962 off = hdr.eh.e_shoff + sizeof(es[0]) *
963 (hdr.eh.e_shstrndx + 1);
964 if (xfsread(&dn, &off, &es, sizeof(es)))
966 for (i = 0; i < 2; i++) {
967 memcpy(p, &es[i].sh_size, sizeof(es[i].sh_size));
968 p += sizeof(es[i].sh_size);
969 off = es[i].sh_offset;
970 if (xfsread(&dn, &off, p, es[i].sh_size))
975 addr = hdr.eh.e_entry & 0xffffff;
977 bootinfo.bi_esymtab = VTOP(p);
978 bootinfo.bi_kernelname = VTOP(kname);
979 zfsargs.size = sizeof(zfsargs);
980 zfsargs.pool = zfsmount.spa->spa_guid;
981 zfsargs.root = zfsmount.rootobj;
982 zfsargs.primary_pool = primary_spa->spa_guid;
983 #ifdef LOADER_GELI_SUPPORT
984 explicit_bzero(gelipw, sizeof(gelipw));
985 gelibuf = malloc(sizeof(struct keybuf) + (GELI_MAX_KEYS * sizeof(struct keybuf_ent)));
986 geli_fill_keybuf(gelibuf);
987 zfsargs.notapw = '\0';
988 zfsargs.keybuf_sentinel = KEYBUF_SENTINEL;
989 zfsargs.keybuf = gelibuf;
991 zfsargs.gelipw[0] = '\0';
993 if (primary_vdev != NULL)
994 zfsargs.primary_vdev = primary_vdev->v_guid;
996 printf("failed to detect primary vdev\n");
997 __exec((caddr_t)addr, RB_BOOTINFO | (opts & RBX_MASK),
999 KARGS_FLAGS_ZFS | KARGS_FLAGS_EXTARG,
1000 (uint32_t) spa->spa_guid,
1001 (uint32_t) (spa->spa_guid >> 32),
1007 zfs_mount_ds(char *dsname)
1013 q = strchr(dsname, '/');
1016 newspa = spa_find_by_name(dsname);
1017 if (newspa == NULL) {
1018 printf("\nCan't find ZFS pool %s\n", dsname);
1022 if (zfs_spa_init(newspa))
1027 if (zfs_lookup_dataset(newspa, q, &newroot)) {
1028 printf("\nCan't find dataset %s in ZFS pool %s\n",
1029 q, newspa->spa_name);
1033 if (zfs_mount(newspa, newroot, &zfsmount)) {
1034 printf("\nCan't mount ZFS dataset\n");
1049 while ((c = *arg++)) {
1050 if (c == ' ' || c == '\t' || c == '\n')
1052 for (p = arg; *p && *p != '\n' && *p != ' ' && *p != '\t'; p++);
1057 while ((c = *arg++)) {
1059 if (*(uint8_t *)PTOV(0x496) & 0x10) {
1062 opts |= OPT_SET(RBX_DUAL) | OPT_SET(RBX_SERIAL);
1065 printf("Keyboard: %s\n", cp);
1067 } else if (c == 'S') {
1069 while ((unsigned int)(i = *arg++ - '0') <= 9)
1071 if (j > 0 && i == -'0') {
1075 /* Fall through to error below ('S' not in optstr[]). */
1077 for (i = 0; c != optstr[i]; i++)
1080 opts ^= OPT_SET(flags[i]);
1082 ioctrl = OPT_CHECK(RBX_DUAL) ? (IO_SERIAL|IO_KEYBOARD) :
1083 OPT_CHECK(RBX_SERIAL) ? IO_SERIAL : IO_KEYBOARD;
1084 if (ioctrl & IO_SERIAL) {
1085 if (sio_init(115200 / comspeed) != 0)
1086 ioctrl &= ~IO_SERIAL;
1091 if (zfs_lookup(&zfsmount, arg, &dn) == 0) {
1099 * Report pool status if the comment is 'status'. Lets
1100 * hope no-one wants to load /status as a kernel.
1102 if (!strcmp(arg, "status")) {
1108 * If there is "zfs:" prefix simply ignore it.
1110 if (strncmp(arg, "zfs:", 4) == 0)
1114 * If there is a colon, switch pools.
1116 q = strchr(arg, ':');
1119 if (zfs_mount_ds(arg) != 0)
1123 if ((i = ep - arg)) {
1124 if ((size_t)i >= sizeof(kname))
1126 memcpy(kname, arg, i + 1);