118 lines
3.5 KiB
C
118 lines
3.5 KiB
C
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/*-
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* Copyright (c) 1997 Michael Smith
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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* from: i386/include/pc bios.h,v 1.2
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*/
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/*
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* Signature structure for the BIOS32 Service Directory header
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*/
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struct bios32_SDheader
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{
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u_int8_t sig[4];
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u_int32_t entry;
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u_int8_t revision;
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u_int8_t len;
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u_int8_t cksum;
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u_int8_t pad[5];
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};
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/*
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* BIOS32 Service Directory entry. Caller supplies name, bios32_SDlookup
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* fills in the rest of the details.
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*/
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struct bios32_SDentry
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{
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union
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{
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u_int8_t name[4]; /* service identifier */
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u_int32_t id; /* as a 32-bit value */
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} ident;
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u_int32_t base; /* base of service */
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u_int32_t len; /* service length */
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u_int32_t entry; /* entrypoint offset from base */
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};
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extern int bios32_SDlookup(struct bios32_SDentry *ent);
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extern u_int32_t bios_sigsearch(u_int32_t start, u_char *sig, int siglen,
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int paralen, int sigofs);
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/*
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* Call a 32-bit BIOS function
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*/
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struct bios32_args {
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u_long eax;
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u_long ebx;
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u_long ecx;
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u_long edx;
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};
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extern void bios32(caddr_t func_addr, struct bios32_args *args);
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#if 0
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#define BIOS_PADDRTOVADDR(x) (((x) - ISA_HOLE_START) + atdevbase)
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#define BIOS_VADDRTOPADDR(x) (((x) - atdevbase) + ISA_HOLE_START)
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#else
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#define BIOS_PADDRTOVADDR(x) (x)
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#define BIOS_VADDRTOPADDR(x) (x)
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#endif
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/*
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* System Management BIOS / Desktop Management Interface tables
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*/
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struct DMI_table
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{
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u_int8_t sig[5]; /* "_DMI_" */
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u_int8_t cksum; /* checksum */
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u_int16_t st_size; /* total length of SMBIOS table (bytes)*/
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u_int32_t st_base; /* base address of the SMBIOS table (physical) */
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u_int16_t st_entries; /* total number of structures present in the table */
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u_int8_t bcd_revision; /* interface revision number */
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};
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struct SMBIOS_table
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{
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u_int8_t sig[4]; /* "_SM_" */
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u_int8_t cksum; /* checksum */
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u_int8_t len; /* structure length */
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u_int8_t major, minor; /* major/minor revision numbers */
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u_int16_t st_maxsize; /* largest structure size (bytes) */
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u_int8_t revision; /* entrypoint revision */
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u_int8_t pad[5];
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struct DMI_table dmi; /* follows immediately */
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};
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/*
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* Exported lookup results
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*/
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extern struct bios32_SDentry PCIbios;
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extern struct SMBIOS_table *SMBIOS_table;
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extern struct DMI_table *DMI_table;
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