7e87dba5cf
Note that this commit slightly increases size of boot blocks. Reviewed by: jhb Tested by: Olivier Cochard-Labbe <olivier@cochard.me> MFC after: 26 days
837 lines
19 KiB
C
837 lines
19 KiB
C
/*-
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* Copyright (c) 1998 Robert Nordier
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are freely
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* permitted provided that the above copyright notice and this
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* paragraph and the following disclaimer are duplicated in all
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* such forms.
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*
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* This software is provided "AS IS" and without any express or
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* implied warranties, including, without limitation, the implied
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* warranties of merchantability and fitness for a particular
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* purpose.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/errno.h>
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#include <sys/diskmbr.h>
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#ifdef GPT
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#include <sys/gpt.h>
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#endif
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#include <sys/reboot.h>
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#include <sys/queue.h>
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#include <machine/bootinfo.h>
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#include <machine/elf.h>
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#include <machine/pc/bios.h>
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#include <stdarg.h>
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#include <stddef.h>
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#include <a.out.h>
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#include <btxv86.h>
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#include "lib.h"
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#include "rbx.h"
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#include "drv.h"
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#include "util.h"
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#include "cons.h"
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#include "bootargs.h"
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#include "libzfs.h"
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#define PATH_DOTCONFIG "/boot.config"
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#define PATH_CONFIG "/boot/config"
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#define PATH_BOOT3 "/boot/zfsloader"
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#define PATH_KERNEL "/boot/kernel/kernel"
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#define ARGS 0x900
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#define NOPT 14
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#define NDEV 3
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#define BIOS_NUMDRIVES 0x475
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#define DRV_HARD 0x80
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#define DRV_MASK 0x7f
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#define TYPE_AD 0
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#define TYPE_DA 1
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#define TYPE_MAXHARD TYPE_DA
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#define TYPE_FD 2
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extern uint32_t _end;
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#ifdef GPT
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static const uuid_t freebsd_zfs_uuid = GPT_ENT_TYPE_FREEBSD_ZFS;
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#endif
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static const char optstr[NOPT] = "DhaCcdgmnpqrsv"; /* Also 'P', 'S' */
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static const unsigned char flags[NOPT] = {
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RBX_DUAL,
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RBX_SERIAL,
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RBX_ASKNAME,
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RBX_CDROM,
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RBX_CONFIG,
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RBX_KDB,
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RBX_GDB,
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RBX_MUTE,
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RBX_NOINTR,
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RBX_PAUSE,
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RBX_QUIET,
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RBX_DFLTROOT,
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RBX_SINGLE,
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RBX_VERBOSE
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};
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uint32_t opts;
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static const char *const dev_nm[NDEV] = {"ad", "da", "fd"};
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static const unsigned char dev_maj[NDEV] = {30, 4, 2};
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static char cmd[512];
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static char cmddup[512];
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static char kname[1024];
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static char rootname[256];
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static int comspeed = SIOSPD;
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static struct bootinfo bootinfo;
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static uint32_t bootdev;
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static struct zfs_boot_args zfsargs;
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static struct zfsmount zfsmount;
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vm_offset_t high_heap_base;
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uint32_t bios_basemem, bios_extmem, high_heap_size;
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static struct bios_smap smap;
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/*
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* The minimum amount of memory to reserve in bios_extmem for the heap.
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*/
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#define HEAP_MIN (3 * 1024 * 1024)
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static char *heap_next;
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static char *heap_end;
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/* Buffers that must not span a 64k boundary. */
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#define READ_BUF_SIZE 8192
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struct dmadat {
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char rdbuf[READ_BUF_SIZE]; /* for reading large things */
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char secbuf[READ_BUF_SIZE]; /* for MBR/disklabel */
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};
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static struct dmadat *dmadat;
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void exit(int);
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static void load(void);
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static int parse(void);
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static void bios_getmem(void);
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static void *
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malloc(size_t n)
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{
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char *p = heap_next;
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if (p + n > heap_end) {
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printf("malloc failure\n");
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for (;;)
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;
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return 0;
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}
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heap_next += n;
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return p;
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}
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static char *
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strdup(const char *s)
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{
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char *p = malloc(strlen(s) + 1);
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strcpy(p, s);
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return p;
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}
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#include "zfsimpl.c"
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/*
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* Read from a dnode (which must be from a ZPL filesystem).
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*/
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static int
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zfs_read(spa_t *spa, const dnode_phys_t *dnode, off_t *offp, void *start, size_t size)
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{
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const znode_phys_t *zp = (const znode_phys_t *) dnode->dn_bonus;
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size_t n;
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int rc;
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n = size;
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if (*offp + n > zp->zp_size)
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n = zp->zp_size - *offp;
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rc = dnode_read(spa, dnode, *offp, start, n);
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if (rc)
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return (-1);
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*offp += n;
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return (n);
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}
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/*
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* Current ZFS pool
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*/
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static spa_t *spa;
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static spa_t *primary_spa;
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static vdev_t *primary_vdev;
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/*
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* A wrapper for dskread that doesn't have to worry about whether the
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* buffer pointer crosses a 64k boundary.
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*/
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static int
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vdev_read(vdev_t *vdev, void *priv, off_t off, void *buf, size_t bytes)
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{
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char *p;
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daddr_t lba;
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unsigned int nb;
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struct dsk *dsk = (struct dsk *) priv;
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if ((off & (DEV_BSIZE - 1)) || (bytes & (DEV_BSIZE - 1)))
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return -1;
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p = buf;
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lba = off / DEV_BSIZE;
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lba += dsk->start;
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while (bytes > 0) {
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nb = bytes / DEV_BSIZE;
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if (nb > READ_BUF_SIZE / DEV_BSIZE)
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nb = READ_BUF_SIZE / DEV_BSIZE;
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if (drvread(dsk, dmadat->rdbuf, lba, nb))
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return -1;
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memcpy(p, dmadat->rdbuf, nb * DEV_BSIZE);
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p += nb * DEV_BSIZE;
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lba += nb;
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bytes -= nb * DEV_BSIZE;
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}
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return 0;
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}
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static int
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xfsread(const dnode_phys_t *dnode, off_t *offp, void *buf, size_t nbyte)
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{
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if ((size_t)zfs_read(spa, dnode, offp, buf, nbyte) != nbyte) {
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printf("Invalid format\n");
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return -1;
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}
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return 0;
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}
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static void
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bios_getmem(void)
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{
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uint64_t size;
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/* Parse system memory map */
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v86.ebx = 0;
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do {
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v86.ctl = V86_FLAGS;
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v86.addr = 0x15; /* int 0x15 function 0xe820*/
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v86.eax = 0xe820;
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v86.ecx = sizeof(struct bios_smap);
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v86.edx = SMAP_SIG;
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v86.es = VTOPSEG(&smap);
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v86.edi = VTOPOFF(&smap);
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v86int();
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if ((v86.efl & 1) || (v86.eax != SMAP_SIG))
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break;
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/* look for a low-memory segment that's large enough */
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if ((smap.type == SMAP_TYPE_MEMORY) && (smap.base == 0) &&
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(smap.length >= (512 * 1024)))
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bios_basemem = smap.length;
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/* look for the first segment in 'extended' memory */
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if ((smap.type == SMAP_TYPE_MEMORY) && (smap.base == 0x100000)) {
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bios_extmem = smap.length;
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}
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/*
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* Look for the largest segment in 'extended' memory beyond
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* 1MB but below 4GB.
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*/
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if ((smap.type == SMAP_TYPE_MEMORY) && (smap.base > 0x100000) &&
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(smap.base < 0x100000000ull)) {
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size = smap.length;
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/*
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* If this segment crosses the 4GB boundary, truncate it.
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*/
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if (smap.base + size > 0x100000000ull)
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size = 0x100000000ull - smap.base;
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if (size > high_heap_size) {
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high_heap_size = size;
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high_heap_base = smap.base;
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}
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}
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} while (v86.ebx != 0);
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/* Fall back to the old compatibility function for base memory */
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if (bios_basemem == 0) {
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v86.ctl = 0;
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v86.addr = 0x12; /* int 0x12 */
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v86int();
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bios_basemem = (v86.eax & 0xffff) * 1024;
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}
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/* Fall back through several compatibility functions for extended memory */
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if (bios_extmem == 0) {
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v86.ctl = V86_FLAGS;
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v86.addr = 0x15; /* int 0x15 function 0xe801*/
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v86.eax = 0xe801;
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v86int();
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if (!(v86.efl & 1)) {
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bios_extmem = ((v86.ecx & 0xffff) + ((v86.edx & 0xffff) * 64)) * 1024;
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}
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}
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if (bios_extmem == 0) {
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v86.ctl = 0;
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v86.addr = 0x15; /* int 0x15 function 0x88*/
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v86.eax = 0x8800;
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v86int();
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bios_extmem = (v86.eax & 0xffff) * 1024;
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}
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/*
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* If we have extended memory and did not find a suitable heap
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* region in the SMAP, use the last 3MB of 'extended' memory as a
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* high heap candidate.
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*/
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if (bios_extmem >= HEAP_MIN && high_heap_size < HEAP_MIN) {
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high_heap_size = HEAP_MIN;
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high_heap_base = bios_extmem + 0x100000 - HEAP_MIN;
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}
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}
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/*
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* Try to detect a device supported by the legacy int13 BIOS
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*/
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static int
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int13probe(int drive)
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{
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v86.ctl = V86_FLAGS;
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v86.addr = 0x13;
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v86.eax = 0x800;
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v86.edx = drive;
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v86int();
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if (!(v86.efl & 0x1) && /* carry clear */
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((v86.edx & 0xff) != (drive & DRV_MASK))) { /* unit # OK */
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if ((v86.ecx & 0x3f) == 0) { /* absurd sector size */
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return(0); /* skip device */
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}
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return (1);
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}
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return(0);
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}
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/*
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* We call this when we find a ZFS vdev - ZFS consumes the dsk
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* structure so we must make a new one.
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*/
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static struct dsk *
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copy_dsk(struct dsk *dsk)
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{
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struct dsk *newdsk;
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newdsk = malloc(sizeof(struct dsk));
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*newdsk = *dsk;
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return (newdsk);
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}
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static void
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probe_drive(struct dsk *dsk)
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{
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#ifdef GPT
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struct gpt_hdr hdr;
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struct gpt_ent *ent;
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daddr_t slba, elba;
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unsigned part, entries_per_sec;
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#endif
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struct dos_partition *dp;
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char *sec;
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unsigned i;
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/*
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* If we find a vdev on the whole disk, stop here. Otherwise dig
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* out the partition table and probe each slice/partition
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* in turn for a vdev.
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*/
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if (vdev_probe(vdev_read, dsk, NULL) == 0)
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return;
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sec = dmadat->secbuf;
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dsk->start = 0;
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#ifdef GPT
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/*
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* First check for GPT.
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*/
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if (drvread(dsk, sec, 1, 1)) {
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return;
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}
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memcpy(&hdr, sec, sizeof(hdr));
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if (memcmp(hdr.hdr_sig, GPT_HDR_SIG, sizeof(hdr.hdr_sig)) != 0 ||
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hdr.hdr_lba_self != 1 || hdr.hdr_revision < 0x00010000 ||
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hdr.hdr_entsz < sizeof(*ent) || DEV_BSIZE % hdr.hdr_entsz != 0) {
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goto trymbr;
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}
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/*
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* Probe all GPT partitions for the presense of ZFS pools. We
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* return the spa_t for the first we find (if requested). This
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* will have the effect of booting from the first pool on the
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* disk.
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*/
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entries_per_sec = DEV_BSIZE / hdr.hdr_entsz;
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slba = hdr.hdr_lba_table;
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elba = slba + hdr.hdr_entries / entries_per_sec;
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while (slba < elba) {
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dsk->start = 0;
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if (drvread(dsk, sec, slba, 1))
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return;
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for (part = 0; part < entries_per_sec; part++) {
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ent = (struct gpt_ent *)(sec + part * hdr.hdr_entsz);
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if (memcmp(&ent->ent_type, &freebsd_zfs_uuid,
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sizeof(uuid_t)) == 0) {
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dsk->start = ent->ent_lba_start;
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if (vdev_probe(vdev_read, dsk, NULL) == 0) {
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/*
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* This slice had a vdev. We need a new dsk
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* structure now since the vdev now owns this one.
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*/
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dsk = copy_dsk(dsk);
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}
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}
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}
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slba++;
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}
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return;
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trymbr:
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#endif
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if (drvread(dsk, sec, DOSBBSECTOR, 1))
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return;
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dp = (void *)(sec + DOSPARTOFF);
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for (i = 0; i < NDOSPART; i++) {
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if (!dp[i].dp_typ)
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continue;
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dsk->start = dp[i].dp_start;
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if (vdev_probe(vdev_read, dsk, NULL) == 0) {
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/*
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* This slice had a vdev. We need a new dsk structure now
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* since the vdev now owns this one.
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*/
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dsk = copy_dsk(dsk);
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}
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}
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}
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int
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main(void)
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{
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int autoboot, i;
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dnode_phys_t dn;
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off_t off;
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struct dsk *dsk;
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dmadat = (void *)(roundup2(__base + (int32_t)&_end, 0x10000) - __base);
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bios_getmem();
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if (high_heap_size > 0) {
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heap_end = PTOV(high_heap_base + high_heap_size);
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heap_next = PTOV(high_heap_base);
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} else {
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heap_next = (char *) dmadat + sizeof(*dmadat);
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heap_end = (char *) PTOV(bios_basemem);
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}
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dsk = malloc(sizeof(struct dsk));
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dsk->drive = *(uint8_t *)PTOV(ARGS);
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dsk->type = dsk->drive & DRV_HARD ? TYPE_AD : TYPE_FD;
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dsk->unit = dsk->drive & DRV_MASK;
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dsk->slice = *(uint8_t *)PTOV(ARGS + 1) + 1;
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dsk->part = 0;
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dsk->start = 0;
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dsk->init = 0;
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bootinfo.bi_version = BOOTINFO_VERSION;
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bootinfo.bi_size = sizeof(bootinfo);
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bootinfo.bi_basemem = bios_basemem / 1024;
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bootinfo.bi_extmem = bios_extmem / 1024;
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bootinfo.bi_memsizes_valid++;
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bootinfo.bi_bios_dev = dsk->drive;
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bootdev = MAKEBOOTDEV(dev_maj[dsk->type],
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dsk->slice, dsk->unit, dsk->part),
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/* Process configuration file */
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autoboot = 1;
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zfs_init();
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/*
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* Probe the boot drive first - we will try to boot from whatever
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* pool we find on that drive.
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*/
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probe_drive(dsk);
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/*
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* Probe the rest of the drives that the bios knows about. This
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* will find any other available pools and it may fill in missing
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* vdevs for the boot pool.
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*/
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#ifndef VIRTUALBOX
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for (i = 0; i < *(unsigned char *)PTOV(BIOS_NUMDRIVES); i++)
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#else
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for (i = 0; i < MAXBDDEV; i++)
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#endif
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{
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if ((i | DRV_HARD) == *(uint8_t *)PTOV(ARGS))
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continue;
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if (!int13probe(i | DRV_HARD))
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break;
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dsk = malloc(sizeof(struct dsk));
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dsk->drive = i | DRV_HARD;
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dsk->type = dsk->drive & TYPE_AD;
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dsk->unit = i;
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dsk->slice = 0;
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dsk->part = 0;
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dsk->start = 0;
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dsk->init = 0;
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probe_drive(dsk);
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}
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/*
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* The first discovered pool, if any, is the pool.
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*/
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spa = spa_get_primary();
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if (!spa) {
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printf("%s: No ZFS pools located, can't boot\n", BOOTPROG);
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for (;;)
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;
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}
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primary_spa = spa;
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primary_vdev = spa_get_primary_vdev(spa);
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if (zfs_spa_init(spa) != 0 || zfs_mount(spa, 0, &zfsmount) != 0) {
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printf("%s: failed to mount default pool %s\n",
|
|
BOOTPROG, spa->spa_name);
|
|
autoboot = 0;
|
|
} else if (zfs_lookup(&zfsmount, PATH_CONFIG, &dn) == 0 ||
|
|
zfs_lookup(&zfsmount, PATH_DOTCONFIG, &dn) == 0) {
|
|
off = 0;
|
|
zfs_read(spa, &dn, &off, cmd, sizeof(cmd));
|
|
}
|
|
|
|
if (*cmd) {
|
|
/*
|
|
* Note that parse() is destructive to cmd[] and we also want
|
|
* to honor RBX_QUIET option that could be present in cmd[].
|
|
*/
|
|
memcpy(cmddup, cmd, sizeof(cmd));
|
|
if (parse())
|
|
autoboot = 0;
|
|
if (!OPT_CHECK(RBX_QUIET))
|
|
printf("%s: %s\n", PATH_CONFIG, cmddup);
|
|
/* Do not process this command twice */
|
|
*cmd = 0;
|
|
}
|
|
|
|
/*
|
|
* Try to exec stage 3 boot loader. If interrupted by a keypress,
|
|
* or in case of failure, try to load a kernel directly instead.
|
|
*/
|
|
|
|
if (autoboot && !*kname) {
|
|
memcpy(kname, PATH_BOOT3, sizeof(PATH_BOOT3));
|
|
if (!keyhit(3)) {
|
|
load();
|
|
memcpy(kname, PATH_KERNEL, sizeof(PATH_KERNEL));
|
|
}
|
|
}
|
|
|
|
/* Present the user with the boot2 prompt. */
|
|
|
|
for (;;) {
|
|
if (!autoboot || !OPT_CHECK(RBX_QUIET)) {
|
|
printf("\nFreeBSD/x86 boot\n");
|
|
if (zfs_rlookup(spa, zfsmount.rootobj, rootname) != 0)
|
|
printf("Default: %s/<0x%llx>:%s\n"
|
|
"boot: ",
|
|
spa->spa_name, zfsmount.rootobj, kname);
|
|
else if (rootname[0] != '\0')
|
|
printf("Default: %s/%s:%s\n"
|
|
"boot: ",
|
|
spa->spa_name, rootname, kname);
|
|
else
|
|
printf("Default: %s:%s\n"
|
|
"boot: ",
|
|
spa->spa_name, kname);
|
|
}
|
|
if (ioctrl & IO_SERIAL)
|
|
sio_flush();
|
|
if (!autoboot || keyhit(5))
|
|
getstr(cmd, sizeof(cmd));
|
|
else if (!autoboot || !OPT_CHECK(RBX_QUIET))
|
|
putchar('\n');
|
|
autoboot = 0;
|
|
if (parse())
|
|
putchar('\a');
|
|
else
|
|
load();
|
|
}
|
|
}
|
|
|
|
/* XXX - Needed for btxld to link the boot2 binary; do not remove. */
|
|
void
|
|
exit(int x)
|
|
{
|
|
}
|
|
|
|
static void
|
|
load(void)
|
|
{
|
|
union {
|
|
struct exec ex;
|
|
Elf32_Ehdr eh;
|
|
} hdr;
|
|
static Elf32_Phdr ep[2];
|
|
static Elf32_Shdr es[2];
|
|
caddr_t p;
|
|
dnode_phys_t dn;
|
|
off_t off;
|
|
uint32_t addr, x;
|
|
int fmt, i, j;
|
|
|
|
if (zfs_lookup(&zfsmount, kname, &dn)) {
|
|
printf("\nCan't find %s\n", kname);
|
|
return;
|
|
}
|
|
off = 0;
|
|
if (xfsread(&dn, &off, &hdr, sizeof(hdr)))
|
|
return;
|
|
if (N_GETMAGIC(hdr.ex) == ZMAGIC)
|
|
fmt = 0;
|
|
else if (IS_ELF(hdr.eh))
|
|
fmt = 1;
|
|
else {
|
|
printf("Invalid %s\n", "format");
|
|
return;
|
|
}
|
|
if (fmt == 0) {
|
|
addr = hdr.ex.a_entry & 0xffffff;
|
|
p = PTOV(addr);
|
|
off = PAGE_SIZE;
|
|
if (xfsread(&dn, &off, p, hdr.ex.a_text))
|
|
return;
|
|
p += roundup2(hdr.ex.a_text, PAGE_SIZE);
|
|
if (xfsread(&dn, &off, p, hdr.ex.a_data))
|
|
return;
|
|
p += hdr.ex.a_data + roundup2(hdr.ex.a_bss, PAGE_SIZE);
|
|
bootinfo.bi_symtab = VTOP(p);
|
|
memcpy(p, &hdr.ex.a_syms, sizeof(hdr.ex.a_syms));
|
|
p += sizeof(hdr.ex.a_syms);
|
|
if (hdr.ex.a_syms) {
|
|
if (xfsread(&dn, &off, p, hdr.ex.a_syms))
|
|
return;
|
|
p += hdr.ex.a_syms;
|
|
if (xfsread(&dn, &off, p, sizeof(int)))
|
|
return;
|
|
x = *(uint32_t *)p;
|
|
p += sizeof(int);
|
|
x -= sizeof(int);
|
|
if (xfsread(&dn, &off, p, x))
|
|
return;
|
|
p += x;
|
|
}
|
|
} else {
|
|
off = hdr.eh.e_phoff;
|
|
for (j = i = 0; i < hdr.eh.e_phnum && j < 2; i++) {
|
|
if (xfsread(&dn, &off, ep + j, sizeof(ep[0])))
|
|
return;
|
|
if (ep[j].p_type == PT_LOAD)
|
|
j++;
|
|
}
|
|
for (i = 0; i < 2; i++) {
|
|
p = PTOV(ep[i].p_paddr & 0xffffff);
|
|
off = ep[i].p_offset;
|
|
if (xfsread(&dn, &off, p, ep[i].p_filesz))
|
|
return;
|
|
}
|
|
p += roundup2(ep[1].p_memsz, PAGE_SIZE);
|
|
bootinfo.bi_symtab = VTOP(p);
|
|
if (hdr.eh.e_shnum == hdr.eh.e_shstrndx + 3) {
|
|
off = hdr.eh.e_shoff + sizeof(es[0]) *
|
|
(hdr.eh.e_shstrndx + 1);
|
|
if (xfsread(&dn, &off, &es, sizeof(es)))
|
|
return;
|
|
for (i = 0; i < 2; i++) {
|
|
memcpy(p, &es[i].sh_size, sizeof(es[i].sh_size));
|
|
p += sizeof(es[i].sh_size);
|
|
off = es[i].sh_offset;
|
|
if (xfsread(&dn, &off, p, es[i].sh_size))
|
|
return;
|
|
p += es[i].sh_size;
|
|
}
|
|
}
|
|
addr = hdr.eh.e_entry & 0xffffff;
|
|
}
|
|
bootinfo.bi_esymtab = VTOP(p);
|
|
bootinfo.bi_kernelname = VTOP(kname);
|
|
zfsargs.size = sizeof(zfsargs);
|
|
zfsargs.pool = zfsmount.spa->spa_guid;
|
|
zfsargs.root = zfsmount.rootobj;
|
|
zfsargs.primary_pool = primary_spa->spa_guid;
|
|
if (primary_vdev != NULL)
|
|
zfsargs.primary_vdev = primary_vdev->v_guid;
|
|
else
|
|
printf("failed to detect primary vdev\n");
|
|
__exec((caddr_t)addr, RB_BOOTINFO | (opts & RBX_MASK),
|
|
bootdev,
|
|
KARGS_FLAGS_ZFS | KARGS_FLAGS_EXTARG,
|
|
(uint32_t) spa->spa_guid,
|
|
(uint32_t) (spa->spa_guid >> 32),
|
|
VTOP(&bootinfo),
|
|
zfsargs);
|
|
}
|
|
|
|
static int
|
|
zfs_mount_ds(char *dsname)
|
|
{
|
|
uint64_t newroot;
|
|
spa_t *newspa;
|
|
char *q;
|
|
|
|
q = strchr(dsname, '/');
|
|
if (q)
|
|
*q++ = '\0';
|
|
newspa = spa_find_by_name(dsname);
|
|
if (newspa == NULL) {
|
|
printf("\nCan't find ZFS pool %s\n", dsname);
|
|
return -1;
|
|
}
|
|
|
|
if (zfs_spa_init(newspa))
|
|
return -1;
|
|
|
|
newroot = 0;
|
|
if (q) {
|
|
if (zfs_lookup_dataset(newspa, q, &newroot)) {
|
|
printf("\nCan't find dataset %s in ZFS pool %s\n",
|
|
q, newspa->spa_name);
|
|
return -1;
|
|
}
|
|
}
|
|
if (zfs_mount(newspa, newroot, &zfsmount)) {
|
|
printf("\nCan't mount ZFS dataset\n");
|
|
return -1;
|
|
}
|
|
spa = newspa;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
parse(void)
|
|
{
|
|
char *arg = cmd;
|
|
char *ep, *p, *q;
|
|
const char *cp;
|
|
int c, i, j;
|
|
|
|
while ((c = *arg++)) {
|
|
if (c == ' ' || c == '\t' || c == '\n')
|
|
continue;
|
|
for (p = arg; *p && *p != '\n' && *p != ' ' && *p != '\t'; p++);
|
|
ep = p;
|
|
if (*p)
|
|
*p++ = 0;
|
|
if (c == '-') {
|
|
while ((c = *arg++)) {
|
|
if (c == 'P') {
|
|
if (*(uint8_t *)PTOV(0x496) & 0x10) {
|
|
cp = "yes";
|
|
} else {
|
|
opts |= OPT_SET(RBX_DUAL) | OPT_SET(RBX_SERIAL);
|
|
cp = "no";
|
|
}
|
|
printf("Keyboard: %s\n", cp);
|
|
continue;
|
|
} else if (c == 'S') {
|
|
j = 0;
|
|
while ((unsigned int)(i = *arg++ - '0') <= 9)
|
|
j = j * 10 + i;
|
|
if (j > 0 && i == -'0') {
|
|
comspeed = j;
|
|
break;
|
|
}
|
|
/* Fall through to error below ('S' not in optstr[]). */
|
|
}
|
|
for (i = 0; c != optstr[i]; i++)
|
|
if (i == NOPT - 1)
|
|
return -1;
|
|
opts ^= OPT_SET(flags[i]);
|
|
}
|
|
ioctrl = OPT_CHECK(RBX_DUAL) ? (IO_SERIAL|IO_KEYBOARD) :
|
|
OPT_CHECK(RBX_SERIAL) ? IO_SERIAL : IO_KEYBOARD;
|
|
if (ioctrl & IO_SERIAL) {
|
|
if (sio_init(115200 / comspeed) != 0)
|
|
ioctrl &= ~IO_SERIAL;
|
|
}
|
|
} if (c == '?') {
|
|
dnode_phys_t dn;
|
|
|
|
if (zfs_lookup(&zfsmount, arg, &dn) == 0) {
|
|
zap_list(spa, &dn);
|
|
}
|
|
return -1;
|
|
} else {
|
|
arg--;
|
|
|
|
/*
|
|
* Report pool status if the comment is 'status'. Lets
|
|
* hope no-one wants to load /status as a kernel.
|
|
*/
|
|
if (!strcmp(arg, "status")) {
|
|
spa_all_status();
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* If there is "zfs:" prefix simply ignore it.
|
|
*/
|
|
if (strncmp(arg, "zfs:", 4) == 0)
|
|
arg += 4;
|
|
|
|
/*
|
|
* If there is a colon, switch pools.
|
|
*/
|
|
q = strchr(arg, ':');
|
|
if (q) {
|
|
*q++ = '\0';
|
|
if (zfs_mount_ds(arg) != 0)
|
|
return -1;
|
|
arg = q;
|
|
}
|
|
if ((i = ep - arg)) {
|
|
if ((size_t)i >= sizeof(kname))
|
|
return -1;
|
|
memcpy(kname, arg, i + 1);
|
|
}
|
|
}
|
|
arg = p;
|
|
}
|
|
return 0;
|
|
}
|