Annotation of sys/arch/landisk/stand/xxboot/boot1.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: boot1.c,v 1.1 2006/11/08 17:46:56 deraadt Exp $ */
! 2: /* $NetBSD: boot1.c,v 1.1 2006/09/01 21:26:19 uwe Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 2003 The NetBSD Foundation, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to The NetBSD Foundation
! 9: * by David Laight.
! 10: *
! 11: * Redistribution and use in source and binary forms, with or without
! 12: * modification, are permitted provided that the following conditions
! 13: * are met:
! 14: * 1. Redistributions of source code must retain the above copyright
! 15: * notice, this list of conditions and the following disclaimer.
! 16: * 2. Redistributions in binary form must reproduce the above copyright
! 17: * notice, this list of conditions and the following disclaimer in the
! 18: * documentation and/or other materials provided with the distribution.
! 19: * 3. All advertising materials mentioning features or use of this software
! 20: * must display the following acknowledgement:
! 21: * This product includes software developed by the NetBSD
! 22: * Foundation, Inc. and its contributors.
! 23: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 24: * contributors may be used to endorse or promote products derived
! 25: * from this software without specific prior written permission.
! 26: *
! 27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 37: * POSSIBILITY OF SUCH DAMAGE.
! 38: */
! 39:
! 40: #include <sys/param.h>
! 41: #include <lib/libsa/stand.h>
! 42: #include <lib/libsa/ufs.h>
! 43:
! 44: #include <sys/disklabel.h>
! 45:
! 46: #define XSTR(x) #x
! 47: #define STR(x) XSTR(x)
! 48:
! 49: static uint32_t bios_sector;
! 50:
! 51: const char *boot1(uint32_t *);
! 52: void putstr(const char *str);
! 53: int raise(int sig);
! 54: int blkdevstrategy(void *, int, daddr_t, size_t, void *, size_t *);
! 55: int blkdevopen(struct open_file *, ...);
! 56: int blkdevclose(struct open_file *);
! 57:
! 58:
! 59: extern struct disklabel ptn_disklabel;
! 60:
! 61: struct fs_ops file_system[] = {
! 62: { ufs_open, ufs_close, ufs_read, ufs_write, ufs_seek,
! 63: ufs_stat, ufs_readdir },
! 64: };
! 65: int nfsys = NENTS(file_system);
! 66:
! 67: struct devsw devsw[] = {
! 68: { "dk", blkdevstrategy, blkdevopen, blkdevclose, noioctl },
! 69: };
! 70: int ndevs = NENTS(devsw);
! 71:
! 72: const char *
! 73: boot1(uint32_t *sector)
! 74: {
! 75: struct stat sb;
! 76: int fd;
! 77:
! 78: bios_sector = *sector;
! 79:
! 80: putstr("\r\nOpenBSD/" MACHINE " Primary Bootstrap\r\n");
! 81:
! 82: do {
! 83: /*
! 84: * Nothing at the start of the MBR partition, fallback on
! 85: * partition 'a' from the disklabel in this MBR partition.
! 86: */
! 87: if (ptn_disklabel.d_magic != DISKMAGIC)
! 88: break;
! 89: if (ptn_disklabel.d_magic2 != DISKMAGIC)
! 90: break;
! 91: if (ptn_disklabel.d_partitions[0].p_fstype == FS_UNUSED)
! 92: break;
! 93:
! 94: bios_sector = ptn_disklabel.d_partitions[0].p_offset;
! 95: *sector = bios_sector;
! 96: fd = open("boot", 0);
! 97: } while (0);
! 98:
! 99: if (fd == -1 || fstat(fd, &sb) == -1)
! 100: return "Can't open /boot.\r\n";
! 101:
! 102: #if 0
! 103: if (sb.st_size > SECONDARY_MAX_LOAD)
! 104: return "/boot too large.\r\n";
! 105: #endif
! 106:
! 107: if (read(fd, (void *)LOADADDRESS, sb.st_size) != sb.st_size)
! 108: return "/boot load failed.\r\n";
! 109:
! 110: if (*(uint32_t *)(LOADADDRESS + 4) != 0x20041110)
! 111: return "Invalid /boot file format.\r\n";
! 112:
! 113: return 0;
! 114: }
! 115:
! 116: int
! 117: blkdevopen(struct open_file *f, ...)
! 118: {
! 119: return 0;
! 120: }
! 121: int
! 122: blkdevclose(struct open_file *f)
! 123: {
! 124: return 0;
! 125: }
! 126:
! 127: int
! 128: blkdevstrategy(void *devdata, int flag, daddr_t dblk, size_t size, void *buf, size_t *rsize)
! 129: {
! 130:
! 131: if (flag != F_READ)
! 132: return EROFS;
! 133:
! 134: if (size & (DEV_BSIZE - 1))
! 135: return EINVAL;
! 136:
! 137: if (rsize)
! 138: *rsize = size;
! 139:
! 140: if (size != 0 && readsects(0x40, bios_sector + dblk, buf,
! 141: size / DEV_BSIZE) != 0)
! 142: return EIO;
! 143:
! 144: return 0;
! 145: }
! 146:
! 147: /* ARGUSED */
! 148: int
! 149: raise(int sig)
! 150: {
! 151:
! 152: return 0;
! 153: }
! 154:
! 155: void
! 156: twiddle(void)
! 157: {
! 158: static int pos;
! 159:
! 160: putchar("|/-\\"[pos++ & 3]);
! 161: putchar('\b');
! 162: }
! 163:
! 164: int
! 165: devopen(struct open_file *f, const char *fname, char **file)
! 166: {
! 167: *file = (char *)fname;
! 168: f->f_flags |= F_NODEV;
! 169: f->f_dev = &devsw[0];
! 170: return (0);
! 171: }
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