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/*-
* Copyright (c) 1997 Michael Smith
* Copyright (c) 1998 Jonathan Lemon
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _MACHINE_PC_BIOS_H_
#define _MACHINE_PC_BIOS_H_
/*
* Int 15:E820 'SMAP' structure
*/
#define SMAP_SIG 0x534D4150 /* 'SMAP' */
#define SMAP_TYPE_MEMORY 1
#define SMAP_TYPE_RESERVED 2
#define SMAP_TYPE_ACPI_RECLAIM 3
#define SMAP_TYPE_ACPI_NVS 4
#define SMAP_TYPE_ACPI_ERROR 5
#define SMAP_XATTR_ENABLED 0x00000001
#define SMAP_XATTR_NON_VOLATILE 0x00000002
#define SMAP_XATTR_MASK (SMAP_XATTR_ENABLED | SMAP_XATTR_NON_VOLATILE)
struct bios_smap {
u_int64_t base;
u_int64_t length;
u_int32_t type;
} __packed;
/*
* System Management BIOS
*/
#define SMBIOS_START 0xf0000
#define SMBIOS_STEP 0x10
#define SMBIOS_OFF 0
#define SMBIOS_LEN 4
#define SMBIOS_SIG "_SM_"
struct smbios_eps {
uint8_t anchor_string[4]; /* '_SM_' */
uint8_t checksum;
uint8_t length;
uint8_t major_version;
uint8_t minor_version;
uint16_t maximum_structure_size;
uint8_t entry_point_revision;
uint8_t formatted_area[5];
uint8_t intermediate_anchor_string[5]; /* '_DMI_' */
uint8_t intermediate_checksum;
uint16_t structure_table_length;
uint32_t structure_table_address;
uint16_t number_structures;
uint8_t BCD_revision;
};
struct smbios_structure_header {
uint8_t type;
uint8_t length;
uint16_t handle;
};
#ifdef _KERNEL
#define BIOS_PADDRTOVADDR(x) ((x) + KERNBASE)
#define BIOS_VADDRTOPADDR(x) ((x) - KERNBASE)
struct bios_oem_signature {
char * anchor; /* search anchor string in BIOS memory */
size_t offset; /* offset from anchor (may be negative) */
size_t totlen; /* total length of BIOS string to copy */
} __packed;
struct bios_oem_range {
u_int from; /* shouldn't be below 0xe0000 */
u_int to; /* shouldn't be above 0xfffff */
} __packed;
struct bios_oem {
struct bios_oem_range range;
struct bios_oem_signature signature[];
} __packed;
int bios_oem_strings(struct bios_oem *oem, u_char *buffer, size_t maxlen);
uint32_t bios_sigsearch(uint32_t start, u_char *sig, int siglen, int paralen,
int sigofs);
#endif
#endif /* _MACHINE_PC_BIOS_H_ */
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