kernel: Import the IPMI driver from FreeBSD.
[dragonfly.git] / sys / platform / pc64 / include / pc / bios.h
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1/*-
2 * Copyright (c) 1997 Michael Smith
3 * Copyright (c) 1998 Jonathan Lemon
4 * Copyright (c) 2008 The DragonFly Project.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 * $DragonFly: src/sys/platform/pc64/include/pc/bios.h,v 1.1 2008/08/29 17:07:18 dillon Exp $
30 */
31
32#ifndef _MACHINE_PC_BIOS_H_
33#define _MACHINE_PC_BIOS_H_
34
35extern u_int32_t bios_sigsearch(u_int32_t start, u_char *sig, int siglen,
36 int paralen, int sigofs);
37
38#define BIOS_PADDRTOVADDR(x) ((x) + KERNBASE)
39#define BIOS_VADDRTOPADDR(x) ((x) - KERNBASE)
40
41/*
42 * Int 15:E820 'SMAP' structure
43 */
44
45#define SMAP_SIG 0x534D4150 /* 'SMAP' */
46
47#define SMAP_TYPE_MEMORY 1
48#define SMAP_TYPE_RESERVED 2
49#define SMAP_TYPE_ACPI_RECLAIM 3
50#define SMAP_TYPE_ACPI_NVS 4
51#define SMAP_TYPE_ACPI_ERROR 5
52
53struct bios_smap {
54 u_int64_t base;
55 u_int64_t length;
56 u_int32_t type;
57} __packed;
58
59struct bios_oem_signature {
60 char * anchor; /* search anchor string in BIOS memory */
61 size_t offset; /* offset from anchor (may be negative) */
62 size_t totlen; /* total length of BIOS string to copy */
63} __packed;
64struct bios_oem_range {
65 u_int from; /* shouldn't be below 0xe0000 */
66 u_int to; /* shouldn't be above 0xfffff */
67} __packed;
68struct bios_oem {
69 struct bios_oem_range range;
70 struct bios_oem_signature signature[];
71} __packed;
72
73extern int
74bios_oem_strings(struct bios_oem *oem, u_char *buffer, size_t maxlen);
75
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76/*
77 * System Management BIOS
78 */
79#define SMBIOS_START 0xf0000
80#define SMBIOS_STEP 0x10
81#define SMBIOS_OFF 0
82#define SMBIOS_LEN 4
83#define SMBIOS_SIG "_SM_"
84
85struct smbios_eps {
86 uint8_t anchor_string[4]; /* '_SM_' */
87 uint8_t checksum;
88 uint8_t length;
89 uint8_t major_version;
90 uint8_t minor_version;
91 uint16_t maximum_structure_size;
92 uint8_t entry_point_revision;
93 uint8_t formatted_area[5];
94 uint8_t intermediate_anchor_string[5]; /* '_DMI_' */
95 uint8_t intermediate_checksum;
96 uint16_t structure_table_length;
97 uint32_t structure_table_address;
98 uint16_t number_structures;
99 uint8_t BCD_revision;
100};
101
102struct smbios_structure_header {
103 uint8_t type;
104 uint8_t length;
105 uint16_t handle;
106};
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107
108#endif /* _MACHINE_PC_BIOS_H_ */