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_ */ 86