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 extern u_int32_t bios_sigsearch(u_int32_t start, u_char *sig, int siglen, 35 int paralen, int sigofs); 36 37 #define BIOS_PADDRTOVADDR(x) ((x) + KERNBASE) 38 #define BIOS_VADDRTOPADDR(x) ((x) - KERNBASE) 39 40 /* 41 * Int 15:E820 'SMAP' structure 42 */ 43 44 #define SMAP_SIG 0x534D4150 /* 'SMAP' */ 45 46 #define SMAP_TYPE_MEMORY 1 47 48 struct bios_smap { 49 u_int64_t base; 50 u_int64_t length; 51 u_int32_t type; 52 } __packed; 53 54 /* 55 * System Management BIOS 56 */ 57 #define SMBIOS_START 0xf0000 58 #define SMBIOS_STEP 0x10 59 #define SMBIOS_OFF 0 60 #define SMBIOS_LEN 4 61 #define SMBIOS_SIG "_SM_" 62 63 struct smbios_eps { 64 uint8_t anchor_string[4]; /* '_SM_' */ 65 uint8_t checksum; 66 uint8_t length; 67 uint8_t major_version; 68 uint8_t minor_version; 69 uint16_t maximum_structure_size; 70 uint8_t entry_point_revision; 71 uint8_t formatted_area[5]; 72 uint8_t intermediate_anchor_string[5]; /* '_DMI_' */ 73 uint8_t intermediate_checksum; 74 uint16_t structure_table_length; 75 uint32_t structure_table_address; 76 uint16_t number_structures; 77 uint8_t BCD_revision; 78 }; 79 80 struct smbios_structure_header { 81 uint8_t type; 82 uint8_t length; 83 uint16_t handle; 84 }; 85 86 #endif /* _MACHINE_PC_BIOS_H_ */ 87