Annotation of sys/arch/landisk/stand/xxboot/boot1.c, Revision 1.1.1.1
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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