xref: /dragonfly/sys/platform/pc64/include/pc/bios.h (revision 19fe1c42)
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 
35 extern 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 
53 struct bios_smap {
54     u_int64_t	base;
55     u_int64_t	length;
56     u_int32_t	type;
57 } __packed;
58 
59 struct 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;
64 struct bios_oem_range {
65 	u_int from;		/* shouldn't be below 0xe0000 */
66 	u_int to;		/* shouldn't be above 0xfffff */
67 } __packed;
68 struct bios_oem {
69 	struct bios_oem_range range;
70 	struct bios_oem_signature signature[];
71 } __packed;
72 
73 extern int
74 bios_oem_strings(struct bios_oem *oem, u_char *buffer, size_t maxlen);
75 
76 
77 #endif /* _MACHINE_PC_BIOS_H_ */
78