1 /*-
2 * Copyright (c) 1997 Michael Smith
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29 /*
30 * Signature structure for the BIOS32 Service Directory header
31 */
32 struct bios32_SDheader
33 {
34 u_int8_t sig[4];
35 u_int32_t entry;
36 u_int8_t revision;
37 u_int8_t len;
38 u_int8_t cksum;
39 u_int8_t pad[5];
40 };
41
42 /*
43 * BIOS32 Service Directory entry. Caller supplies name, bios32_SDlookup
44 * fills in the rest of the details.
45 */
46 struct bios32_SDentry
47 {
48 union
49 {
50 u_int8_t name[4]; /* service identifier */
51 u_int32_t id; /* as a 32-bit value */
52 } ident;
53 u_int32_t base; /* base of service */
54 u_int32_t len; /* service length */
55 u_int32_t entry; /* entrypoint offset from base */
56 };
57
58 extern int bios32_SDlookup(struct bios32_SDentry *ent);
59 extern u_int32_t bios_sigsearch(u_int32_t start, u_char *sig, int siglen,
60 int paralen, int sigofs);
61
62 /*
63 * Call a 32-bit BIOS function
64 */
65 struct bios32_args {
66 u_long eax;
67 u_long ebx;
68 u_long ecx;
69 u_long edx;
70 };
71 extern void bios32(caddr_t func_addr, struct bios32_args *args);
72
73 #define BIOS_PADDRTOVADDR(x) (((x) - ISA_HOLE_START) + atdevbase)
74 #define BIOS_VADDRTOPADDR(x) (((x) - atdevbase) + ISA_HOLE_START)
75
76
77 /*
78 * System Management BIOS / Desktop Management Interface tables
79 */
80
81 struct DMI_table
82 {
83 u_int8_t sig[5]; /* "_DMI_" */
84 u_int8_t cksum; /* checksum */
85 u_int16_t st_size; /* total length of SMBIOS table (bytes)*/
86 u_int32_t st_base; /* base address of the SMBIOS table (physical) */
87 u_int16_t st_entries; /* total number of structures present in the table */
88 u_int8_t bcd_revision; /* interface revision number */
89 };
90
91 struct SMBIOS_table
92 {
93 u_int8_t sig[4]; /* "_SM_" */
94 u_int8_t cksum; /* checksum */
95 u_int8_t len; /* structure length */
96 u_int8_t major, minor; /* major/minor revision numbers */
97 u_int16_t st_maxsize; /* largest structure size (bytes) */
98 u_int8_t revision; /* entrypoint revision */
99 u_int8_t pad[5];
100 struct DMI_table dmi; /* follows immediately */
101 };
102
103
104 /*
105 * Exported lookup results
106 */
107 extern struct bios32_SDentry PCIbios;
108 extern struct SMBIOS_table *SMBIOS_table;
109 extern struct DMI_table *DMI_table;
110
111
112
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