sys/platform/pc64/include/pc/bios.h

   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  */
  30
  31 #ifndef _MACHINE_PC_BIOS_H_
  32 #define _MACHINE_PC_BIOS_H_
  33
  34 uint32_t        bios_sigsearch(uint32_t, unsigned char *, int, int, int);
  35
  36 #define BIOS_PADDRTOVADDR(x)    ((x) + KERNBASE)
  37 #define BIOS_VADDRTOPADDR(x)    ((x) - KERNBASE)
  38
  39 /*
  40  * Int 15:E820 'SMAP' structure
  41  */
  42
  43 #define SMAP_SIG        0x534D4150                      /* 'SMAP' */
  44
  45 #define SMAP_TYPE_MEMORY        1
  46
  47 struct bios_smap {
  48     uint64_t    base;
  49     uint64_t    length;
  50     uint32_t    type;
  51 } __packed;
  52
  53 /*
  54  * System Management BIOS
  55  */
  56 #define SMBIOS_START    0xf0000
  57 #define SMBIOS_STEP     0x10
  58 #define SMBIOS_OFF      0
  59 #define SMBIOS_LEN      4
  60 #define SMBIOS_SIG      "_SM_"
  61
  62 struct smbios_eps {
  63         uint8_t         anchor_string[4];               /* '_SM_' */
  64         uint8_t         checksum;
  65         uint8_t         length;
  66         uint8_t         major_version;
  67         uint8_t         minor_version;
  68         uint16_t        maximum_structure_size;
  69         uint8_t         entry_point_revision;
  70         uint8_t         formatted_area[5];
  71         uint8_t         intermediate_anchor_string[5];  /* '_DMI_' */
  72         uint8_t         intermediate_checksum;
  73         uint16_t        structure_table_length;
  74         uint32_t        structure_table_address;
  75         uint16_t        number_structures;
  76         uint8_t         BCD_revision;
  77 };
  78
  79 struct smbios_structure_header {
  80         uint8_t         type;
  81         uint8_t         length;
  82         uint16_t        handle;
  83 };
  84
  85 #endif /* _MACHINE_PC_BIOS_H_ */