1185029Spjd/*- 2185029Spjd * Copyright (c) 1998 Robert Nordier 3185029Spjd * All rights reserved. 4185029Spjd * 5185029Spjd * Redistribution and use in source and binary forms are freely 6185029Spjd * permitted provided that the above copyright notice and this 7185029Spjd * paragraph and the following disclaimer are duplicated in all 8185029Spjd * such forms. 9185029Spjd * 10185029Spjd * This software is provided "AS IS" and without any express or 11185029Spjd * implied warranties, including, without limitation, the implied 12185029Spjd * warranties of merchantability and fitness for a particular 13185029Spjd * purpose. 14185029Spjd */ 15185029Spjd 16185029Spjd#include <sys/cdefs.h> 17185029Spjd__FBSDID("$FreeBSD: stable/11/stand/i386/zfsboot/zfsboot.c 348866 2019-06-10 15:55:38Z kevans $"); 18185029Spjd 19329175Skevans#include "stand.h" 20329175Skevans 21185029Spjd#include <sys/param.h> 22185029Spjd#include <sys/errno.h> 23185029Spjd#include <sys/diskmbr.h> 24185096Sdfr#ifdef GPT 25185096Sdfr#include <sys/gpt.h> 26185096Sdfr#endif 27185029Spjd#include <sys/reboot.h> 28185029Spjd#include <sys/queue.h> 29185029Spjd 30185029Spjd#include <machine/bootinfo.h> 31185029Spjd#include <machine/elf.h> 32200309Sjhb#include <machine/pc/bios.h> 33185029Spjd 34185029Spjd#include <stdarg.h> 35185029Spjd#include <stddef.h> 36185029Spjd 37185029Spjd#include <a.out.h> 38185029Spjd 39185029Spjd#include <btxv86.h> 40185029Spjd 41185029Spjd#include "lib.h" 42213136Spjd#include "rbx.h" 43213136Spjd#include "drv.h" 44329100Skevans#include "edd.h" 45213136Spjd#include "cons.h" 46235154Savg#include "bootargs.h" 47294765Simp#include "paths.h" 48185029Spjd 49235329Savg#include "libzfs.h" 50235329Savg 51297629Sallanjude#define ARGS 0x900 52297629Sallanjude#define NOPT 14 53297629Sallanjude#define NDEV 3 54185029Spjd 55297629Sallanjude#define BIOS_NUMDRIVES 0x475 56297629Sallanjude#define DRV_HARD 0x80 57297629Sallanjude#define DRV_MASK 0x7f 58185029Spjd 59297629Sallanjude#define TYPE_AD 0 60297629Sallanjude#define TYPE_DA 1 61297629Sallanjude#define TYPE_MAXHARD TYPE_DA 62297629Sallanjude#define TYPE_FD 2 63185029Spjd 64297629Sallanjude#define DEV_GELIBOOT_BSIZE 4096 65297629Sallanjude 66185029Spjdextern uint32_t _end; 67185029Spjd 68185096Sdfr#ifdef GPT 69185096Sdfrstatic const uuid_t freebsd_zfs_uuid = GPT_ENT_TYPE_FREEBSD_ZFS; 70185096Sdfr#endif 71185029Spjdstatic const char optstr[NOPT] = "DhaCcdgmnpqrsv"; /* Also 'P', 'S' */ 72185029Spjdstatic const unsigned char flags[NOPT] = { 73185029Spjd RBX_DUAL, 74185029Spjd RBX_SERIAL, 75185029Spjd RBX_ASKNAME, 76185029Spjd RBX_CDROM, 77185029Spjd RBX_CONFIG, 78185029Spjd RBX_KDB, 79185029Spjd RBX_GDB, 80185029Spjd RBX_MUTE, 81185029Spjd RBX_NOINTR, 82185029Spjd RBX_PAUSE, 83185029Spjd RBX_QUIET, 84185029Spjd RBX_DFLTROOT, 85185029Spjd RBX_SINGLE, 86185029Spjd RBX_VERBOSE 87185029Spjd}; 88213136Spjduint32_t opts; 89185029Spjd 90348866Skevans/* 91348866Skevans * Paths to try loading before falling back to the boot2 prompt. 92348866Skevans * 93348866Skevans * /boot/zfsloader must be tried before /boot/loader in order to remain 94348866Skevans * backward compatible with ZFS boot environments where /boot/loader exists 95348866Skevans * but does not have ZFS support, which was the case before FreeBSD 12. 96348866Skevans * 97348866Skevans * If no loader is found, try to load a kernel directly instead. 98348866Skevans */ 99348866Skevansstatic const struct string { 100348866Skevans const char *p; 101348866Skevans size_t len; 102348866Skevans} loadpath[] = { 103348866Skevans { PATH_LOADER_ZFS, sizeof(PATH_LOADER_ZFS) }, 104348866Skevans { PATH_LOADER, sizeof(PATH_LOADER) }, 105348866Skevans { PATH_KERNEL, sizeof(PATH_KERNEL) }, 106348866Skevans}; 107348866Skevans 108185029Spjdstatic const unsigned char dev_maj[NDEV] = {30, 4, 2}; 109185029Spjd 110185029Spjdstatic char cmd[512]; 111234339Savgstatic char cmddup[512]; 112185029Spjdstatic char kname[1024]; 113235329Savgstatic char rootname[256]; 114185029Spjdstatic int comspeed = SIOSPD; 115185029Spjdstatic struct bootinfo bootinfo; 116185029Spjdstatic uint32_t bootdev; 117235329Savgstatic struct zfs_boot_args zfsargs; 118185029Spjd 119200309Sjhbvm_offset_t high_heap_base; 120200309Sjhbuint32_t bios_basemem, bios_extmem, high_heap_size; 121200309Sjhb 122200309Sjhbstatic struct bios_smap smap; 123200309Sjhb 124200309Sjhb/* 125200309Sjhb * The minimum amount of memory to reserve in bios_extmem for the heap. 126200309Sjhb */ 127328866Skevans#define HEAP_MIN (64 * 1024 * 1024) 128200309Sjhb 129200309Sjhbstatic char *heap_next; 130200309Sjhbstatic char *heap_end; 131200309Sjhb 132185029Spjd/* Buffers that must not span a 64k boundary. */ 133297629Sallanjude#define READ_BUF_SIZE 8192 134185029Spjdstruct dmadat { 135185029Spjd char rdbuf[READ_BUF_SIZE]; /* for reading large things */ 136185029Spjd char secbuf[READ_BUF_SIZE]; /* for MBR/disklabel */ 137185029Spjd}; 138185029Spjdstatic struct dmadat *dmadat; 139185029Spjd 140185029Spjdvoid exit(int); 141308914Savgvoid reboot(void); 142185029Spjdstatic void load(void); 143329099Skevansstatic int parse_cmd(void); 144200309Sjhbstatic void bios_getmem(void); 145329100Skevansint main(void); 146185029Spjd 147296963Sallanjude#ifdef LOADER_GELI_SUPPORT 148344399Skevans#include "geliboot.h" 149296963Sallanjudestatic char gelipw[GELI_PW_MAXLEN]; 150296963Sallanjude#endif 151296963Sallanjude 152344399Skevansstruct zfsdsk { 153344399Skevans struct dsk dsk; 154344399Skevans#ifdef LOADER_GELI_SUPPORT 155344399Skevans struct geli_dev *gdev; 156344399Skevans#endif 157344399Skevans}; 158344399Skevans 159185029Spjd#include "zfsimpl.c" 160185029Spjd 161185029Spjd/* 162185029Spjd * Read from a dnode (which must be from a ZPL filesystem). 163185029Spjd */ 164185029Spjdstatic int 165185029Spjdzfs_read(spa_t *spa, const dnode_phys_t *dnode, off_t *offp, void *start, size_t size) 166185029Spjd{ 167185029Spjd const znode_phys_t *zp = (const znode_phys_t *) dnode->dn_bonus; 168185029Spjd size_t n; 169185029Spjd int rc; 170185029Spjd 171185029Spjd n = size; 172185029Spjd if (*offp + n > zp->zp_size) 173185029Spjd n = zp->zp_size - *offp; 174308914Savg 175185029Spjd rc = dnode_read(spa, dnode, *offp, start, n); 176185029Spjd if (rc) 177185029Spjd return (-1); 178185029Spjd *offp += n; 179185029Spjd 180185029Spjd return (n); 181185029Spjd} 182185029Spjd 183185029Spjd/* 184185029Spjd * Current ZFS pool 185185029Spjd */ 186235329Savgstatic spa_t *spa; 187241293Savgstatic spa_t *primary_spa; 188241293Savgstatic vdev_t *primary_vdev; 189185029Spjd 190185029Spjd/* 191185029Spjd * A wrapper for dskread that doesn't have to worry about whether the 192185029Spjd * buffer pointer crosses a 64k boundary. 193185029Spjd */ 194185029Spjdstatic int 195329175Skevansvdev_read(void *xvdev, void *priv, off_t off, void *buf, size_t bytes) 196185029Spjd{ 197185029Spjd char *p; 198297629Sallanjude daddr_t lba, alignlba; 199300257Sallanjude off_t diff; 200297629Sallanjude unsigned int nb, alignnb; 201344399Skevans struct zfsdsk *zdsk = (struct zfsdsk *) priv; 202185029Spjd 203185029Spjd if ((off & (DEV_BSIZE - 1)) || (bytes & (DEV_BSIZE - 1))) 204185029Spjd return -1; 205185029Spjd 206185029Spjd p = buf; 207185029Spjd lba = off / DEV_BSIZE; 208344399Skevans lba += zdsk->dsk.start; 209297629Sallanjude /* 210300257Sallanjude * Align reads to 4k else 4k sector GELIs will not decrypt. 211300257Sallanjude * Round LBA down to nearest multiple of DEV_GELIBOOT_BSIZE bytes. 212300257Sallanjude */ 213300257Sallanjude alignlba = rounddown2(off, DEV_GELIBOOT_BSIZE) / DEV_BSIZE; 214300257Sallanjude /* 215297629Sallanjude * The read must be aligned to DEV_GELIBOOT_BSIZE bytes relative to the 216297629Sallanjude * start of the GELI partition, not the start of the actual disk. 217297629Sallanjude */ 218344399Skevans alignlba += zdsk->dsk.start; 219297629Sallanjude diff = (lba - alignlba) * DEV_BSIZE; 220297629Sallanjude 221185029Spjd while (bytes > 0) { 222185029Spjd nb = bytes / DEV_BSIZE; 223297629Sallanjude /* 224297629Sallanjude * Ensure that the read size plus the leading offset does not 225297629Sallanjude * exceed the size of the read buffer. 226297629Sallanjude */ 227298949Speter if (nb > (READ_BUF_SIZE - diff) / DEV_BSIZE) 228298949Speter nb = (READ_BUF_SIZE - diff) / DEV_BSIZE; 229297629Sallanjude /* 230297629Sallanjude * Round the number of blocks to read up to the nearest multiple 231297629Sallanjude * of DEV_GELIBOOT_BSIZE. 232297629Sallanjude */ 233298949Speter alignnb = roundup2(nb * DEV_BSIZE + diff, DEV_GELIBOOT_BSIZE) 234298949Speter / DEV_BSIZE; 235297629Sallanjude 236344399Skevans if (zdsk->dsk.size > 0 && alignlba + alignnb > 237344399Skevans zdsk->dsk.size + zdsk->dsk.start) { 238344399Skevans printf("Shortening read at %lld from %d to %lld\n", 239344399Skevans alignlba, alignnb, 240344399Skevans (zdsk->dsk.size + zdsk->dsk.start) - alignlba); 241344399Skevans alignnb = (zdsk->dsk.size + zdsk->dsk.start) - alignlba; 242344295Skevans } 243344295Skevans 244344399Skevans if (drvread(&zdsk->dsk, dmadat->rdbuf, alignlba, alignnb)) 245185029Spjd return -1; 246296963Sallanjude#ifdef LOADER_GELI_SUPPORT 247296963Sallanjude /* decrypt */ 248344399Skevans if (zdsk->gdev != NULL) { 249344399Skevans if (geli_read(zdsk->gdev, ((alignlba - zdsk->dsk.start) * 250297629Sallanjude DEV_BSIZE), dmadat->rdbuf, alignnb * DEV_BSIZE)) 251297629Sallanjude return (-1); 252296963Sallanjude } 253296963Sallanjude#endif 254297629Sallanjude memcpy(p, dmadat->rdbuf + diff, nb * DEV_BSIZE); 255185029Spjd p += nb * DEV_BSIZE; 256185029Spjd lba += nb; 257297629Sallanjude alignlba += alignnb; 258185029Spjd bytes -= nb * DEV_BSIZE; 259297629Sallanjude /* Don't need the leading offset after the first block. */ 260297629Sallanjude diff = 0; 261185029Spjd } 262185029Spjd 263185029Spjd return 0; 264185029Spjd} 265329175Skevans/* Match the signature exactly due to signature madness */ 266329175Skevansstatic int 267329175Skevansvdev_read2(vdev_t *vdev, void *priv, off_t off, void *buf, size_t bytes) 268329175Skevans{ 269329175Skevans return vdev_read(vdev, priv, off, buf, bytes); 270329175Skevans} 271185029Spjd 272329175Skevans 273185029Spjdstatic int 274308914Savgvdev_write(vdev_t *vdev, void *priv, off_t off, void *buf, size_t bytes) 275308914Savg{ 276308914Savg char *p; 277308914Savg daddr_t lba; 278308914Savg unsigned int nb; 279344399Skevans struct zfsdsk *zdsk = (struct zfsdsk *) priv; 280308914Savg 281308914Savg if ((off & (DEV_BSIZE - 1)) || (bytes & (DEV_BSIZE - 1))) 282308914Savg return -1; 283308914Savg 284308914Savg p = buf; 285308914Savg lba = off / DEV_BSIZE; 286344399Skevans lba += zdsk->dsk.start; 287308914Savg while (bytes > 0) { 288308914Savg nb = bytes / DEV_BSIZE; 289308914Savg if (nb > READ_BUF_SIZE / DEV_BSIZE) 290308914Savg nb = READ_BUF_SIZE / DEV_BSIZE; 291308914Savg memcpy(dmadat->rdbuf, p, nb * DEV_BSIZE); 292344399Skevans if (drvwrite(&zdsk->dsk, dmadat->rdbuf, lba, nb)) 293308914Savg return -1; 294308914Savg p += nb * DEV_BSIZE; 295308914Savg lba += nb; 296308914Savg bytes -= nb * DEV_BSIZE; 297308914Savg } 298308914Savg 299308914Savg return 0; 300308914Savg} 301308914Savg 302308914Savgstatic int 303185029Spjdxfsread(const dnode_phys_t *dnode, off_t *offp, void *buf, size_t nbyte) 304185029Spjd{ 305185029Spjd if ((size_t)zfs_read(spa, dnode, offp, buf, nbyte) != nbyte) { 306235329Savg printf("Invalid format\n"); 307185029Spjd return -1; 308185029Spjd } 309185029Spjd return 0; 310185029Spjd} 311185029Spjd 312308914Savg/* 313308914Savg * Read Pad2 (formerly "Boot Block Header") area of the first 314308914Savg * vdev label of the given vdev. 315308914Savg */ 316308914Savgstatic int 317308914Savgvdev_read_pad2(vdev_t *vdev, char *buf, size_t size) 318308914Savg{ 319308914Savg blkptr_t bp; 320308914Savg char *tmp = zap_scratch; 321308914Savg off_t off = offsetof(vdev_label_t, vl_pad2); 322308914Savg 323308914Savg if (size > VDEV_PAD_SIZE) 324308914Savg size = VDEV_PAD_SIZE; 325308914Savg 326308914Savg BP_ZERO(&bp); 327308914Savg BP_SET_LSIZE(&bp, VDEV_PAD_SIZE); 328308914Savg BP_SET_PSIZE(&bp, VDEV_PAD_SIZE); 329308914Savg BP_SET_CHECKSUM(&bp, ZIO_CHECKSUM_LABEL); 330308914Savg BP_SET_COMPRESS(&bp, ZIO_COMPRESS_OFF); 331308914Savg DVA_SET_OFFSET(BP_IDENTITY(&bp), off); 332308914Savg if (vdev_read_phys(vdev, &bp, tmp, off, 0)) 333308914Savg return (EIO); 334308914Savg memcpy(buf, tmp, size); 335308914Savg return (0); 336308914Savg} 337308914Savg 338308914Savgstatic int 339308914Savgvdev_clear_pad2(vdev_t *vdev) 340308914Savg{ 341308914Savg char *zeroes = zap_scratch; 342308914Savg uint64_t *end; 343308914Savg off_t off = offsetof(vdev_label_t, vl_pad2); 344308914Savg 345308914Savg memset(zeroes, 0, VDEV_PAD_SIZE); 346308914Savg end = (uint64_t *)(zeroes + VDEV_PAD_SIZE); 347308914Savg /* ZIO_CHECKSUM_LABEL magic and pre-calcualted checksum for all zeros */ 348308914Savg end[-5] = 0x0210da7ab10c7a11; 349308914Savg end[-4] = 0x97f48f807f6e2a3f; 350308914Savg end[-3] = 0xaf909f1658aacefc; 351308914Savg end[-2] = 0xcbd1ea57ff6db48b; 352308914Savg end[-1] = 0x6ec692db0d465fab; 353308914Savg if (vdev_write(vdev, vdev->v_read_priv, off, zeroes, VDEV_PAD_SIZE)) 354308914Savg return (EIO); 355308914Savg return (0); 356308914Savg} 357308914Savg 358200309Sjhbstatic void 359200309Sjhbbios_getmem(void) 360185029Spjd{ 361200309Sjhb uint64_t size; 362185029Spjd 363200309Sjhb /* Parse system memory map */ 364200309Sjhb v86.ebx = 0; 365200309Sjhb do { 366200309Sjhb v86.ctl = V86_FLAGS; 367200309Sjhb v86.addr = 0x15; /* int 0x15 function 0xe820*/ 368200309Sjhb v86.eax = 0xe820; 369200309Sjhb v86.ecx = sizeof(struct bios_smap); 370200309Sjhb v86.edx = SMAP_SIG; 371200309Sjhb v86.es = VTOPSEG(&smap); 372200309Sjhb v86.edi = VTOPOFF(&smap); 373200309Sjhb v86int(); 374292682Sjhb if (V86_CY(v86.efl) || (v86.eax != SMAP_SIG)) 375200309Sjhb break; 376200309Sjhb /* look for a low-memory segment that's large enough */ 377200309Sjhb if ((smap.type == SMAP_TYPE_MEMORY) && (smap.base == 0) && 378200309Sjhb (smap.length >= (512 * 1024))) 379200309Sjhb bios_basemem = smap.length; 380200309Sjhb /* look for the first segment in 'extended' memory */ 381200309Sjhb if ((smap.type == SMAP_TYPE_MEMORY) && (smap.base == 0x100000)) { 382200309Sjhb bios_extmem = smap.length; 383200309Sjhb } 384200309Sjhb 385200309Sjhb /* 386200309Sjhb * Look for the largest segment in 'extended' memory beyond 387200309Sjhb * 1MB but below 4GB. 388200309Sjhb */ 389200309Sjhb if ((smap.type == SMAP_TYPE_MEMORY) && (smap.base > 0x100000) && 390200309Sjhb (smap.base < 0x100000000ull)) { 391200309Sjhb size = smap.length; 392200309Sjhb 393200309Sjhb /* 394200309Sjhb * If this segment crosses the 4GB boundary, truncate it. 395200309Sjhb */ 396200309Sjhb if (smap.base + size > 0x100000000ull) 397200309Sjhb size = 0x100000000ull - smap.base; 398200309Sjhb 399200309Sjhb if (size > high_heap_size) { 400200309Sjhb high_heap_size = size; 401200309Sjhb high_heap_base = smap.base; 402200309Sjhb } 403200309Sjhb } 404200309Sjhb } while (v86.ebx != 0); 405200309Sjhb 406200309Sjhb /* Fall back to the old compatibility function for base memory */ 407200309Sjhb if (bios_basemem == 0) { 408200309Sjhb v86.ctl = 0; 409200309Sjhb v86.addr = 0x12; /* int 0x12 */ 410200309Sjhb v86int(); 411200309Sjhb 412200309Sjhb bios_basemem = (v86.eax & 0xffff) * 1024; 413200309Sjhb } 414200309Sjhb 415200309Sjhb /* Fall back through several compatibility functions for extended memory */ 416200309Sjhb if (bios_extmem == 0) { 417200309Sjhb v86.ctl = V86_FLAGS; 418200309Sjhb v86.addr = 0x15; /* int 0x15 function 0xe801*/ 419200309Sjhb v86.eax = 0xe801; 420200309Sjhb v86int(); 421292682Sjhb if (!V86_CY(v86.efl)) { 422200309Sjhb bios_extmem = ((v86.ecx & 0xffff) + ((v86.edx & 0xffff) * 64)) * 1024; 423200309Sjhb } 424200309Sjhb } 425200309Sjhb if (bios_extmem == 0) { 426200309Sjhb v86.ctl = 0; 427200309Sjhb v86.addr = 0x15; /* int 0x15 function 0x88*/ 428200309Sjhb v86.eax = 0x8800; 429200309Sjhb v86int(); 430200309Sjhb bios_extmem = (v86.eax & 0xffff) * 1024; 431200309Sjhb } 432200309Sjhb 433200309Sjhb /* 434200309Sjhb * If we have extended memory and did not find a suitable heap 435200309Sjhb * region in the SMAP, use the last 3MB of 'extended' memory as a 436200309Sjhb * high heap candidate. 437200309Sjhb */ 438200309Sjhb if (bios_extmem >= HEAP_MIN && high_heap_size < HEAP_MIN) { 439200309Sjhb high_heap_size = HEAP_MIN; 440200309Sjhb high_heap_base = bios_extmem + 0x100000 - HEAP_MIN; 441200309Sjhb } 442296963Sallanjude} 443200309Sjhb 444185029Spjd/* 445185029Spjd * Try to detect a device supported by the legacy int13 BIOS 446185029Spjd */ 447185029Spjdstatic int 448185029Spjdint13probe(int drive) 449185029Spjd{ 450185029Spjd v86.ctl = V86_FLAGS; 451185029Spjd v86.addr = 0x13; 452185029Spjd v86.eax = 0x800; 453185029Spjd v86.edx = drive; 454185029Spjd v86int(); 455185029Spjd 456292682Sjhb if (!V86_CY(v86.efl) && /* carry clear */ 457185029Spjd ((v86.edx & 0xff) != (drive & DRV_MASK))) { /* unit # OK */ 458185029Spjd if ((v86.ecx & 0x3f) == 0) { /* absurd sector size */ 459185029Spjd return(0); /* skip device */ 460185029Spjd } 461185029Spjd return (1); 462185029Spjd } 463185029Spjd return(0); 464185029Spjd} 465185029Spjd 466192194Sdfr/* 467192194Sdfr * We call this when we find a ZFS vdev - ZFS consumes the dsk 468192194Sdfr * structure so we must make a new one. 469192194Sdfr */ 470344399Skevansstatic struct zfsdsk * 471344399Skevanscopy_dsk(struct zfsdsk *zdsk) 472192194Sdfr{ 473344399Skevans struct zfsdsk *newdsk; 474192194Sdfr 475344399Skevans newdsk = malloc(sizeof(struct zfsdsk)); 476344399Skevans *newdsk = *zdsk; 477192194Sdfr return (newdsk); 478192194Sdfr} 479192194Sdfr 480329100Skevans/* 481329100Skevans * Get disk size from eax=0x800 and 0x4800. We need to probe both 482329100Skevans * because 0x4800 may not be available and we would like to get more 483329100Skevans * or less correct disk size - if it is possible at all. 484329100Skevans * Note we do not really want to touch drv.c because that code is shared 485329100Skevans * with boot2 and we can not afford to grow that code. 486329100Skevans */ 487329100Skevansstatic uint64_t 488344399Skevansdrvsize_ext(struct zfsdsk *zdsk) 489329100Skevans{ 490344399Skevans struct dsk *dskp; 491329100Skevans uint64_t size, tmp; 492329100Skevans int cyl, hds, sec; 493329100Skevans 494344399Skevans dskp = &zdsk->dsk; 495344399Skevans 496329100Skevans v86.ctl = V86_FLAGS; 497329100Skevans v86.addr = 0x13; 498329100Skevans v86.eax = 0x800; 499329100Skevans v86.edx = dskp->drive; 500329100Skevans v86int(); 501329100Skevans 502329100Skevans /* Don't error out if we get bad sector number, try EDD as well */ 503329100Skevans if (V86_CY(v86.efl) || /* carry set */ 504329100Skevans (v86.edx & 0xff) <= (unsigned)(dskp->drive & 0x7f)) /* unit # bad */ 505329100Skevans return (0); 506329100Skevans cyl = ((v86.ecx & 0xc0) << 2) + ((v86.ecx & 0xff00) >> 8) + 1; 507329100Skevans /* Convert max head # -> # of heads */ 508329100Skevans hds = ((v86.edx & 0xff00) >> 8) + 1; 509329100Skevans sec = v86.ecx & 0x3f; 510329100Skevans 511329100Skevans size = (uint64_t)cyl * hds * sec; 512329100Skevans 513329100Skevans /* Determine if we can use EDD with this device. */ 514329100Skevans v86.ctl = V86_FLAGS; 515329100Skevans v86.addr = 0x13; 516329100Skevans v86.eax = 0x4100; 517329100Skevans v86.edx = dskp->drive; 518329100Skevans v86.ebx = 0x55aa; 519329100Skevans v86int(); 520329100Skevans if (V86_CY(v86.efl) || /* carry set */ 521329100Skevans (v86.ebx & 0xffff) != 0xaa55 || /* signature */ 522329100Skevans (v86.ecx & EDD_INTERFACE_FIXED_DISK) == 0) 523329100Skevans return (size); 524329100Skevans 525329100Skevans tmp = drvsize(dskp); 526329100Skevans if (tmp > size) 527329100Skevans size = tmp; 528329100Skevans 529329100Skevans return (size); 530329100Skevans} 531329100Skevans 532329100Skevans/* 533329100Skevans * The "layered" ioctl to read disk/partition size. Unfortunately 534329100Skevans * the zfsboot case is hardest, because we do not have full software 535329100Skevans * stack available, so we need to do some manual work here. 536329100Skevans */ 537329100Skevansuint64_t 538329100Skevansldi_get_size(void *priv) 539329100Skevans{ 540344399Skevans struct zfsdsk *zdsk = priv; 541344399Skevans uint64_t size = zdsk->dsk.size; 542329100Skevans 543344399Skevans if (zdsk->dsk.start == 0) 544344399Skevans size = drvsize_ext(zdsk); 545329100Skevans 546329100Skevans return (size * DEV_BSIZE); 547329100Skevans} 548329100Skevans 549185029Spjdstatic void 550344399Skevansprobe_drive(struct zfsdsk *zdsk) 551185029Spjd{ 552185096Sdfr#ifdef GPT 553185096Sdfr struct gpt_hdr hdr; 554185096Sdfr struct gpt_ent *ent; 555185096Sdfr unsigned part, entries_per_sec; 556299997Speter daddr_t slba; 557185096Sdfr#endif 558299997Speter#if defined(GPT) || defined(LOADER_GELI_SUPPORT) 559299997Speter daddr_t elba; 560299660Sngie#endif 561299997Speter 562185029Spjd struct dos_partition *dp; 563185029Spjd char *sec; 564185029Spjd unsigned i; 565185029Spjd 566185029Spjd /* 567296963Sallanjude * If we find a vdev on the whole disk, stop here. 568185029Spjd */ 569344399Skevans if (vdev_probe(vdev_read2, zdsk, NULL) == 0) 570185029Spjd return; 571185029Spjd 572296963Sallanjude#ifdef LOADER_GELI_SUPPORT 573296963Sallanjude /* 574296963Sallanjude * Taste the disk, if it is GELI encrypted, decrypt it and check to see if 575296963Sallanjude * it is a usable vdev then. Otherwise dig 576296963Sallanjude * out the partition table and probe each slice/partition 577296963Sallanjude * in turn for a vdev or GELI encrypted vdev. 578296963Sallanjude */ 579344399Skevans elba = drvsize_ext(zdsk); 580296963Sallanjude if (elba > 0) { 581296963Sallanjude elba--; 582296963Sallanjude } 583344399Skevans zdsk->gdev = geli_taste(vdev_read, zdsk, elba, "disk%u:0:"); 584344399Skevans if (zdsk->gdev != NULL) { 585344399Skevans if (geli_havekey(zdsk->gdev) == 0 || 586344399Skevans geli_passphrase(zdsk->gdev, gelipw) == 0) { 587344399Skevans if (vdev_probe(vdev_read2, zdsk, NULL) == 0) { 588296963Sallanjude return; 589296963Sallanjude } 590296963Sallanjude } 591296963Sallanjude } 592296963Sallanjude#endif /* LOADER_GELI_SUPPORT */ 593296963Sallanjude 594185029Spjd sec = dmadat->secbuf; 595344399Skevans zdsk->dsk.start = 0; 596185096Sdfr 597185096Sdfr#ifdef GPT 598185096Sdfr /* 599185096Sdfr * First check for GPT. 600185096Sdfr */ 601344399Skevans if (drvread(&zdsk->dsk, sec, 1, 1)) { 602185096Sdfr return; 603185096Sdfr } 604185096Sdfr memcpy(&hdr, sec, sizeof(hdr)); 605185096Sdfr if (memcmp(hdr.hdr_sig, GPT_HDR_SIG, sizeof(hdr.hdr_sig)) != 0 || 606185096Sdfr hdr.hdr_lba_self != 1 || hdr.hdr_revision < 0x00010000 || 607185096Sdfr hdr.hdr_entsz < sizeof(*ent) || DEV_BSIZE % hdr.hdr_entsz != 0) { 608185096Sdfr goto trymbr; 609185096Sdfr } 610185096Sdfr 611185096Sdfr /* 612298826Spfg * Probe all GPT partitions for the presence of ZFS pools. We 613185096Sdfr * return the spa_t for the first we find (if requested). This 614185096Sdfr * will have the effect of booting from the first pool on the 615185096Sdfr * disk. 616296963Sallanjude * 617296963Sallanjude * If no vdev is found, GELI decrypting the device and try again 618185096Sdfr */ 619185096Sdfr entries_per_sec = DEV_BSIZE / hdr.hdr_entsz; 620185096Sdfr slba = hdr.hdr_lba_table; 621185096Sdfr elba = slba + hdr.hdr_entries / entries_per_sec; 622185096Sdfr while (slba < elba) { 623344399Skevans zdsk->dsk.start = 0; 624344399Skevans if (drvread(&zdsk->dsk, sec, slba, 1)) 625185096Sdfr return; 626185096Sdfr for (part = 0; part < entries_per_sec; part++) { 627185096Sdfr ent = (struct gpt_ent *)(sec + part * hdr.hdr_entsz); 628185096Sdfr if (memcmp(&ent->ent_type, &freebsd_zfs_uuid, 629185096Sdfr sizeof(uuid_t)) == 0) { 630344399Skevans zdsk->dsk.start = ent->ent_lba_start; 631344399Skevans zdsk->dsk.size = ent->ent_lba_end - ent->ent_lba_start + 1; 632344399Skevans zdsk->dsk.slice = part + 1; 633344399Skevans zdsk->dsk.part = 255; 634344399Skevans if (vdev_probe(vdev_read2, zdsk, NULL) == 0) { 635185096Sdfr /* 636185096Sdfr * This slice had a vdev. We need a new dsk 637185096Sdfr * structure now since the vdev now owns this one. 638185096Sdfr */ 639344399Skevans zdsk = copy_dsk(zdsk); 640185096Sdfr } 641296963Sallanjude#ifdef LOADER_GELI_SUPPORT 642344399Skevans else if ((zdsk->gdev = geli_taste(vdev_read, zdsk, 643344399Skevans ent->ent_lba_end - ent->ent_lba_start, "disk%up%u:", 644344399Skevans zdsk->dsk.unit, zdsk->dsk.slice)) != NULL) { 645344399Skevans if (geli_havekey(zdsk->gdev) == 0 || 646344399Skevans geli_passphrase(zdsk->gdev, gelipw) == 0) { 647296963Sallanjude /* 648296963Sallanjude * This slice has GELI, check it for ZFS. 649296963Sallanjude */ 650344399Skevans if (vdev_probe(vdev_read2, zdsk, NULL) == 0) { 651296963Sallanjude /* 652296963Sallanjude * This slice had a vdev. We need a new dsk 653296963Sallanjude * structure now since the vdev now owns this one. 654296963Sallanjude */ 655344399Skevans zdsk = copy_dsk(zdsk); 656296963Sallanjude } 657296963Sallanjude break; 658296963Sallanjude } 659296963Sallanjude } 660296963Sallanjude#endif /* LOADER_GELI_SUPPORT */ 661185096Sdfr } 662185096Sdfr } 663185096Sdfr slba++; 664185096Sdfr } 665185096Sdfr return; 666185096Sdfrtrymbr: 667296963Sallanjude#endif /* GPT */ 668185096Sdfr 669344399Skevans if (drvread(&zdsk->dsk, sec, DOSBBSECTOR, 1)) 670185029Spjd return; 671185029Spjd dp = (void *)(sec + DOSPARTOFF); 672185029Spjd 673185029Spjd for (i = 0; i < NDOSPART; i++) { 674185029Spjd if (!dp[i].dp_typ) 675185029Spjd continue; 676344399Skevans zdsk->dsk.start = dp[i].dp_start; 677344399Skevans zdsk->dsk.size = dp[i].dp_size; 678344399Skevans zdsk->dsk.slice = i + 1; 679344399Skevans if (vdev_probe(vdev_read2, zdsk, NULL) == 0) { 680344399Skevans zdsk = copy_dsk(zdsk); 681185029Spjd } 682296963Sallanjude#ifdef LOADER_GELI_SUPPORT 683344399Skevans else if ((zdsk->gdev = geli_taste(vdev_read, zdsk, dp[i].dp_size - 684344399Skevans dp[i].dp_start, "disk%us%u:")) != NULL) { 685344399Skevans if (geli_havekey(zdsk->gdev) == 0 || 686344399Skevans geli_passphrase(zdsk->gdev, gelipw) == 0) { 687296963Sallanjude /* 688296963Sallanjude * This slice has GELI, check it for ZFS. 689296963Sallanjude */ 690344399Skevans if (vdev_probe(vdev_read2, zdsk, NULL) == 0) { 691296963Sallanjude /* 692296963Sallanjude * This slice had a vdev. We need a new dsk 693296963Sallanjude * structure now since the vdev now owns this one. 694296963Sallanjude */ 695344399Skevans zdsk = copy_dsk(zdsk); 696296963Sallanjude } 697296963Sallanjude break; 698296963Sallanjude } 699296963Sallanjude } 700296963Sallanjude#endif /* LOADER_GELI_SUPPORT */ 701185029Spjd } 702185029Spjd} 703185029Spjd 704185029Spjdint 705185029Spjdmain(void) 706185029Spjd{ 707185029Spjd dnode_phys_t dn; 708185029Spjd off_t off; 709344399Skevans struct zfsdsk *zdsk; 710308914Savg int autoboot, i; 711308914Savg int nextboot; 712308914Savg int rc; 713185029Spjd 714208388Sjhb dmadat = (void *)(roundup2(__base + (int32_t)&_end, 0x10000) - __base); 715208388Sjhb 716200309Sjhb bios_getmem(); 717200309Sjhb 718200309Sjhb if (high_heap_size > 0) { 719200309Sjhb heap_end = PTOV(high_heap_base + high_heap_size); 720200309Sjhb heap_next = PTOV(high_heap_base); 721200309Sjhb } else { 722296963Sallanjude heap_next = (char *)dmadat + sizeof(*dmadat); 723296963Sallanjude heap_end = (char *)PTOV(bios_basemem); 724200309Sjhb } 725329175Skevans setheap(heap_next, heap_end); 726200309Sjhb 727344399Skevans zdsk = calloc(1, sizeof(struct zfsdsk)); 728344399Skevans zdsk->dsk.drive = *(uint8_t *)PTOV(ARGS); 729344399Skevans zdsk->dsk.type = zdsk->dsk.drive & DRV_HARD ? TYPE_AD : TYPE_FD; 730344399Skevans zdsk->dsk.unit = zdsk->dsk.drive & DRV_MASK; 731344399Skevans zdsk->dsk.slice = *(uint8_t *)PTOV(ARGS + 1) + 1; 732344399Skevans zdsk->dsk.part = 0; 733344399Skevans zdsk->dsk.start = 0; 734344399Skevans zdsk->dsk.size = drvsize_ext(zdsk); 735185029Spjd 736185029Spjd bootinfo.bi_version = BOOTINFO_VERSION; 737185029Spjd bootinfo.bi_size = sizeof(bootinfo); 738200309Sjhb bootinfo.bi_basemem = bios_basemem / 1024; 739200309Sjhb bootinfo.bi_extmem = bios_extmem / 1024; 740185029Spjd bootinfo.bi_memsizes_valid++; 741344399Skevans bootinfo.bi_bios_dev = zdsk->dsk.drive; 742185029Spjd 743344399Skevans bootdev = MAKEBOOTDEV(dev_maj[zdsk->dsk.type], 744344399Skevans zdsk->dsk.slice, zdsk->dsk.unit, zdsk->dsk.part); 745185029Spjd 746185029Spjd /* Process configuration file */ 747185029Spjd 748185029Spjd autoboot = 1; 749185029Spjd 750185029Spjd zfs_init(); 751185029Spjd 752185029Spjd /* 753185029Spjd * Probe the boot drive first - we will try to boot from whatever 754185029Spjd * pool we find on that drive. 755185029Spjd */ 756344399Skevans probe_drive(zdsk); 757185029Spjd 758185029Spjd /* 759185029Spjd * Probe the rest of the drives that the bios knows about. This 760185029Spjd * will find any other available pools and it may fill in missing 761185029Spjd * vdevs for the boot pool. 762185029Spjd */ 763212805Spjd#ifndef VIRTUALBOX 764212805Spjd for (i = 0; i < *(unsigned char *)PTOV(BIOS_NUMDRIVES); i++) 765212805Spjd#else 766212805Spjd for (i = 0; i < MAXBDDEV; i++) 767212805Spjd#endif 768212805Spjd { 769185029Spjd if ((i | DRV_HARD) == *(uint8_t *)PTOV(ARGS)) 770185029Spjd continue; 771185029Spjd 772192194Sdfr if (!int13probe(i | DRV_HARD)) 773192194Sdfr break; 774192194Sdfr 775344399Skevans zdsk = calloc(1, sizeof(struct zfsdsk)); 776344399Skevans zdsk->dsk.drive = i | DRV_HARD; 777344399Skevans zdsk->dsk.type = zdsk->dsk.drive & TYPE_AD; 778344399Skevans zdsk->dsk.unit = i; 779344399Skevans zdsk->dsk.slice = 0; 780344399Skevans zdsk->dsk.part = 0; 781344399Skevans zdsk->dsk.start = 0; 782344399Skevans zdsk->dsk.size = drvsize_ext(zdsk); 783344399Skevans probe_drive(zdsk); 784185029Spjd } 785185029Spjd 786185029Spjd /* 787241294Savg * The first discovered pool, if any, is the pool. 788185029Spjd */ 789241294Savg spa = spa_get_primary(); 790185029Spjd if (!spa) { 791241294Savg printf("%s: No ZFS pools located, can't boot\n", BOOTPROG); 792241294Savg for (;;) 793241294Savg ; 794185029Spjd } 795185029Spjd 796241293Savg primary_spa = spa; 797241293Savg primary_vdev = spa_get_primary_vdev(spa); 798241293Savg 799308914Savg nextboot = 0; 800308914Savg rc = vdev_read_pad2(primary_vdev, cmd, sizeof(cmd)); 801308914Savg if (vdev_clear_pad2(primary_vdev)) 802308914Savg printf("failed to clear pad2 area of primary vdev\n"); 803308914Savg if (rc == 0) { 804308914Savg if (*cmd) { 805308914Savg /* 806308914Savg * We could find an old-style ZFS Boot Block header here. 807308914Savg * Simply ignore it. 808308914Savg */ 809308914Savg if (*(uint64_t *)cmd != 0x2f5b007b10c) { 810308914Savg /* 811308914Savg * Note that parse() is destructive to cmd[] and we also want 812308914Savg * to honor RBX_QUIET option that could be present in cmd[]. 813308914Savg */ 814308914Savg nextboot = 1; 815308914Savg memcpy(cmddup, cmd, sizeof(cmd)); 816329099Skevans if (parse_cmd()) { 817308914Savg printf("failed to parse pad2 area of primary vdev\n"); 818308914Savg reboot(); 819308914Savg } 820308914Savg if (!OPT_CHECK(RBX_QUIET)) 821308914Savg printf("zfs nextboot: %s\n", cmddup); 822308914Savg } 823308914Savg /* Do not process this command twice */ 824308914Savg *cmd = 0; 825308914Savg } 826308914Savg } else 827308914Savg printf("failed to read pad2 area of primary vdev\n"); 828308914Savg 829308914Savg /* Mount ZFS only if it's not already mounted via nextboot parsing. */ 830308914Savg if (zfsmount.spa == NULL && 831308914Savg (zfs_spa_init(spa) != 0 || zfs_mount(spa, 0, &zfsmount) != 0)) { 832235329Savg printf("%s: failed to mount default pool %s\n", 833235329Savg BOOTPROG, spa->spa_name); 834235329Savg autoboot = 0; 835235329Savg } else if (zfs_lookup(&zfsmount, PATH_CONFIG, &dn) == 0 || 836235329Savg zfs_lookup(&zfsmount, PATH_DOTCONFIG, &dn) == 0) { 837185029Spjd off = 0; 838198079Sjhb zfs_read(spa, &dn, &off, cmd, sizeof(cmd)); 839185029Spjd } 840185029Spjd 841185029Spjd if (*cmd) { 842234339Savg /* 843329099Skevans * Note that parse_cmd() is destructive to cmd[] and we also want 844234339Savg * to honor RBX_QUIET option that could be present in cmd[]. 845234339Savg */ 846234339Savg memcpy(cmddup, cmd, sizeof(cmd)); 847329099Skevans if (parse_cmd()) 848185029Spjd autoboot = 0; 849234339Savg if (!OPT_CHECK(RBX_QUIET)) 850241288Savg printf("%s: %s\n", PATH_CONFIG, cmddup); 851185029Spjd /* Do not process this command twice */ 852185029Spjd *cmd = 0; 853185029Spjd } 854185029Spjd 855308914Savg /* Do not risk waiting at the prompt forever. */ 856308914Savg if (nextboot && !autoboot) 857308914Savg reboot(); 858308914Savg 859185029Spjd if (autoboot && !*kname) { 860348866Skevans /* 861348866Skevans * Iterate through the list of loader and kernel paths, trying to load. 862348866Skevans * If interrupted by a keypress, or in case of failure, drop the user 863348866Skevans * to the boot2 prompt. 864348866Skevans */ 865348866Skevans for (i = 0; i < nitems(loadpath); i++) { 866348866Skevans memcpy(kname, loadpath[i].p, loadpath[i].len); 867348866Skevans if (keyhit(3)) 868348866Skevans break; 869185029Spjd load(); 870185029Spjd } 871185029Spjd } 872185029Spjd 873185029Spjd /* Present the user with the boot2 prompt. */ 874185029Spjd 875185029Spjd for (;;) { 876235329Savg if (!autoboot || !OPT_CHECK(RBX_QUIET)) { 877235329Savg printf("\nFreeBSD/x86 boot\n"); 878235329Savg if (zfs_rlookup(spa, zfsmount.rootobj, rootname) != 0) 879241288Savg printf("Default: %s/<0x%llx>:%s\n" 880235329Savg "boot: ", 881235329Savg spa->spa_name, zfsmount.rootobj, kname); 882241288Savg else if (rootname[0] != '\0') 883241288Savg printf("Default: %s/%s:%s\n" 884241288Savg "boot: ", 885241288Savg spa->spa_name, rootname, kname); 886235329Savg else 887241288Savg printf("Default: %s:%s\n" 888235329Savg "boot: ", 889241288Savg spa->spa_name, kname); 890235329Savg } 891185029Spjd if (ioctrl & IO_SERIAL) 892185029Spjd sio_flush(); 893213136Spjd if (!autoboot || keyhit(5)) 894213136Spjd getstr(cmd, sizeof(cmd)); 895185029Spjd else if (!autoboot || !OPT_CHECK(RBX_QUIET)) 896185029Spjd putchar('\n'); 897185029Spjd autoboot = 0; 898329099Skevans if (parse_cmd()) 899185029Spjd putchar('\a'); 900185029Spjd else 901185029Spjd load(); 902185029Spjd } 903185029Spjd} 904185029Spjd 905185029Spjd/* XXX - Needed for btxld to link the boot2 binary; do not remove. */ 906185029Spjdvoid 907185029Spjdexit(int x) 908185029Spjd{ 909308914Savg __exit(x); 910185029Spjd} 911185029Spjd 912308914Savgvoid 913308914Savgreboot(void) 914308914Savg{ 915308914Savg __exit(0); 916308914Savg} 917308914Savg 918185029Spjdstatic void 919185029Spjdload(void) 920185029Spjd{ 921185029Spjd union { 922185029Spjd struct exec ex; 923185029Spjd Elf32_Ehdr eh; 924185029Spjd } hdr; 925185029Spjd static Elf32_Phdr ep[2]; 926185029Spjd static Elf32_Shdr es[2]; 927185029Spjd caddr_t p; 928185029Spjd dnode_phys_t dn; 929185029Spjd off_t off; 930185029Spjd uint32_t addr, x; 931185029Spjd int fmt, i, j; 932185029Spjd 933235329Savg if (zfs_lookup(&zfsmount, kname, &dn)) { 934235329Savg printf("\nCan't find %s\n", kname); 935185029Spjd return; 936185029Spjd } 937185029Spjd off = 0; 938185029Spjd if (xfsread(&dn, &off, &hdr, sizeof(hdr))) 939185029Spjd return; 940185029Spjd if (N_GETMAGIC(hdr.ex) == ZMAGIC) 941185029Spjd fmt = 0; 942185029Spjd else if (IS_ELF(hdr.eh)) 943185029Spjd fmt = 1; 944185029Spjd else { 945185029Spjd printf("Invalid %s\n", "format"); 946185029Spjd return; 947185029Spjd } 948185029Spjd if (fmt == 0) { 949185029Spjd addr = hdr.ex.a_entry & 0xffffff; 950185029Spjd p = PTOV(addr); 951185029Spjd off = PAGE_SIZE; 952185029Spjd if (xfsread(&dn, &off, p, hdr.ex.a_text)) 953185029Spjd return; 954185029Spjd p += roundup2(hdr.ex.a_text, PAGE_SIZE); 955185029Spjd if (xfsread(&dn, &off, p, hdr.ex.a_data)) 956185029Spjd return; 957185029Spjd p += hdr.ex.a_data + roundup2(hdr.ex.a_bss, PAGE_SIZE); 958185029Spjd bootinfo.bi_symtab = VTOP(p); 959185029Spjd memcpy(p, &hdr.ex.a_syms, sizeof(hdr.ex.a_syms)); 960185029Spjd p += sizeof(hdr.ex.a_syms); 961185029Spjd if (hdr.ex.a_syms) { 962185029Spjd if (xfsread(&dn, &off, p, hdr.ex.a_syms)) 963185029Spjd return; 964185029Spjd p += hdr.ex.a_syms; 965185029Spjd if (xfsread(&dn, &off, p, sizeof(int))) 966185029Spjd return; 967185029Spjd x = *(uint32_t *)p; 968185029Spjd p += sizeof(int); 969185029Spjd x -= sizeof(int); 970185029Spjd if (xfsread(&dn, &off, p, x)) 971185029Spjd return; 972185029Spjd p += x; 973185029Spjd } 974185029Spjd } else { 975185029Spjd off = hdr.eh.e_phoff; 976185029Spjd for (j = i = 0; i < hdr.eh.e_phnum && j < 2; i++) { 977185029Spjd if (xfsread(&dn, &off, ep + j, sizeof(ep[0]))) 978185029Spjd return; 979185029Spjd if (ep[j].p_type == PT_LOAD) 980185029Spjd j++; 981185029Spjd } 982185029Spjd for (i = 0; i < 2; i++) { 983185029Spjd p = PTOV(ep[i].p_paddr & 0xffffff); 984185029Spjd off = ep[i].p_offset; 985185029Spjd if (xfsread(&dn, &off, p, ep[i].p_filesz)) 986185029Spjd return; 987185029Spjd } 988185029Spjd p += roundup2(ep[1].p_memsz, PAGE_SIZE); 989185029Spjd bootinfo.bi_symtab = VTOP(p); 990185029Spjd if (hdr.eh.e_shnum == hdr.eh.e_shstrndx + 3) { 991185029Spjd off = hdr.eh.e_shoff + sizeof(es[0]) * 992185029Spjd (hdr.eh.e_shstrndx + 1); 993185029Spjd if (xfsread(&dn, &off, &es, sizeof(es))) 994185029Spjd return; 995185029Spjd for (i = 0; i < 2; i++) { 996185029Spjd memcpy(p, &es[i].sh_size, sizeof(es[i].sh_size)); 997185029Spjd p += sizeof(es[i].sh_size); 998185029Spjd off = es[i].sh_offset; 999185029Spjd if (xfsread(&dn, &off, p, es[i].sh_size)) 1000185029Spjd return; 1001185029Spjd p += es[i].sh_size; 1002185029Spjd } 1003185029Spjd } 1004185029Spjd addr = hdr.eh.e_entry & 0xffffff; 1005185029Spjd } 1006185029Spjd bootinfo.bi_esymtab = VTOP(p); 1007185029Spjd bootinfo.bi_kernelname = VTOP(kname); 1008235329Savg zfsargs.size = sizeof(zfsargs); 1009235329Savg zfsargs.pool = zfsmount.spa->spa_guid; 1010235329Savg zfsargs.root = zfsmount.rootobj; 1011241293Savg zfsargs.primary_pool = primary_spa->spa_guid; 1012296963Sallanjude#ifdef LOADER_GELI_SUPPORT 1013329099Skevans explicit_bzero(gelipw, sizeof(gelipw)); 1014344399Skevans export_geli_boot_data(&zfsargs.gelidata); 1015296963Sallanjude#endif 1016241293Savg if (primary_vdev != NULL) 1017241293Savg zfsargs.primary_vdev = primary_vdev->v_guid; 1018241293Savg else 1019241293Savg printf("failed to detect primary vdev\n"); 1020344399Skevans /* 1021344399Skevans * Note that the zfsargs struct is passed by value, not by pointer. Code in 1022344399Skevans * btxldr.S copies the values from the entry stack to a fixed location 1023344399Skevans * within loader(8) at startup due to the presence of KARGS_FLAGS_EXTARG. 1024344399Skevans */ 1025185029Spjd __exec((caddr_t)addr, RB_BOOTINFO | (opts & RBX_MASK), 1026185029Spjd bootdev, 1027235329Savg KARGS_FLAGS_ZFS | KARGS_FLAGS_EXTARG, 1028185029Spjd (uint32_t) spa->spa_guid, 1029185029Spjd (uint32_t) (spa->spa_guid >> 32), 1030235329Savg VTOP(&bootinfo), 1031235329Savg zfsargs); 1032185029Spjd} 1033185029Spjd 1034185029Spjdstatic int 1035241288Savgzfs_mount_ds(char *dsname) 1036241288Savg{ 1037241288Savg uint64_t newroot; 1038241288Savg spa_t *newspa; 1039241288Savg char *q; 1040241288Savg 1041241288Savg q = strchr(dsname, '/'); 1042241288Savg if (q) 1043241288Savg *q++ = '\0'; 1044241288Savg newspa = spa_find_by_name(dsname); 1045241288Savg if (newspa == NULL) { 1046241288Savg printf("\nCan't find ZFS pool %s\n", dsname); 1047241288Savg return -1; 1048241288Savg } 1049241288Savg 1050241288Savg if (zfs_spa_init(newspa)) 1051241288Savg return -1; 1052241288Savg 1053241288Savg newroot = 0; 1054241288Savg if (q) { 1055241288Savg if (zfs_lookup_dataset(newspa, q, &newroot)) { 1056241288Savg printf("\nCan't find dataset %s in ZFS pool %s\n", 1057241288Savg q, newspa->spa_name); 1058241288Savg return -1; 1059241288Savg } 1060241288Savg } 1061241288Savg if (zfs_mount(newspa, newroot, &zfsmount)) { 1062241288Savg printf("\nCan't mount ZFS dataset\n"); 1063241288Savg return -1; 1064241288Savg } 1065241288Savg spa = newspa; 1066241288Savg return (0); 1067241288Savg} 1068241288Savg 1069241288Savgstatic int 1070329099Skevansparse_cmd(void) 1071185029Spjd{ 1072185029Spjd char *arg = cmd; 1073185029Spjd char *ep, *p, *q; 1074185029Spjd const char *cp; 1075185029Spjd int c, i, j; 1076185029Spjd 1077185029Spjd while ((c = *arg++)) { 1078185029Spjd if (c == ' ' || c == '\t' || c == '\n') 1079185029Spjd continue; 1080185029Spjd for (p = arg; *p && *p != '\n' && *p != ' ' && *p != '\t'; p++); 1081185029Spjd ep = p; 1082185029Spjd if (*p) 1083185029Spjd *p++ = 0; 1084185029Spjd if (c == '-') { 1085185029Spjd while ((c = *arg++)) { 1086185029Spjd if (c == 'P') { 1087185029Spjd if (*(uint8_t *)PTOV(0x496) & 0x10) { 1088185029Spjd cp = "yes"; 1089185029Spjd } else { 1090185029Spjd opts |= OPT_SET(RBX_DUAL) | OPT_SET(RBX_SERIAL); 1091185029Spjd cp = "no"; 1092185029Spjd } 1093185029Spjd printf("Keyboard: %s\n", cp); 1094185029Spjd continue; 1095185029Spjd } else if (c == 'S') { 1096185029Spjd j = 0; 1097185029Spjd while ((unsigned int)(i = *arg++ - '0') <= 9) 1098185029Spjd j = j * 10 + i; 1099185029Spjd if (j > 0 && i == -'0') { 1100185029Spjd comspeed = j; 1101185029Spjd break; 1102185029Spjd } 1103185029Spjd /* Fall through to error below ('S' not in optstr[]). */ 1104185029Spjd } 1105185029Spjd for (i = 0; c != optstr[i]; i++) 1106185029Spjd if (i == NOPT - 1) 1107185029Spjd return -1; 1108185029Spjd opts ^= OPT_SET(flags[i]); 1109185029Spjd } 1110185029Spjd ioctrl = OPT_CHECK(RBX_DUAL) ? (IO_SERIAL|IO_KEYBOARD) : 1111185029Spjd OPT_CHECK(RBX_SERIAL) ? IO_SERIAL : IO_KEYBOARD; 1112241301Savg if (ioctrl & IO_SERIAL) { 1113241301Savg if (sio_init(115200 / comspeed) != 0) 1114241301Savg ioctrl &= ~IO_SERIAL; 1115241301Savg } 1116185029Spjd } if (c == '?') { 1117185029Spjd dnode_phys_t dn; 1118185029Spjd 1119235329Savg if (zfs_lookup(&zfsmount, arg, &dn) == 0) { 1120185029Spjd zap_list(spa, &dn); 1121185029Spjd } 1122185029Spjd return -1; 1123185029Spjd } else { 1124185029Spjd arg--; 1125185029Spjd 1126185029Spjd /* 1127185029Spjd * Report pool status if the comment is 'status'. Lets 1128185029Spjd * hope no-one wants to load /status as a kernel. 1129185029Spjd */ 1130185029Spjd if (!strcmp(arg, "status")) { 1131185029Spjd spa_all_status(); 1132185029Spjd return -1; 1133185029Spjd } 1134185029Spjd 1135185029Spjd /* 1136241288Savg * If there is "zfs:" prefix simply ignore it. 1137241288Savg */ 1138241288Savg if (strncmp(arg, "zfs:", 4) == 0) 1139241288Savg arg += 4; 1140241288Savg 1141241288Savg /* 1142185029Spjd * If there is a colon, switch pools. 1143185029Spjd */ 1144241288Savg q = strchr(arg, ':'); 1145185029Spjd if (q) { 1146241288Savg *q++ = '\0'; 1147241288Savg if (zfs_mount_ds(arg) != 0) 1148185029Spjd return -1; 1149241288Savg arg = q; 1150185029Spjd } 1151185029Spjd if ((i = ep - arg)) { 1152185029Spjd if ((size_t)i >= sizeof(kname)) 1153185029Spjd return -1; 1154185029Spjd memcpy(kname, arg, i + 1); 1155185029Spjd } 1156185029Spjd } 1157185029Spjd arg = p; 1158185029Spjd } 1159185029Spjd return 0; 1160185029Spjd} 1161