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 #define SMAP_TYPE_RESERVED 2 48 #define SMAP_TYPE_ACPI_RECLAIM 3 49 #define SMAP_TYPE_ACPI_NVS 4 50 #define SMAP_TYPE_ACPI_ERROR 5 51 52 struct bios_smap { 53 u_int64_t base; 54 u_int64_t length; 55 u_int32_t type; 56 } __packed; 57 58 struct bios_oem_signature { 59 char * anchor; /* search anchor string in BIOS memory */ 60 size_t offset; /* offset from anchor (may be negative) */ 61 size_t totlen; /* total length of BIOS string to copy */ 62 } __packed; 63 struct bios_oem_range { 64 u_int from; /* shouldn't be below 0xe0000 */ 65 u_int to; /* shouldn't be above 0xfffff */ 66 } __packed; 67 struct bios_oem { 68 struct bios_oem_range range; 69 struct bios_oem_signature signature[]; 70 } __packed; 71 72 extern int 73 bios_oem_strings(struct bios_oem *oem, u_char *buffer, size_t maxlen); 74 75 /* 76 * System Management BIOS 77 */ 78 #define SMBIOS_START 0xf0000 79 #define SMBIOS_STEP 0x10 80 #define SMBIOS_OFF 0 81 #define SMBIOS_LEN 4 82 #define SMBIOS_SIG "_SM_" 83 84 struct smbios_eps { 85 uint8_t anchor_string[4]; /* '_SM_' */ 86 uint8_t checksum; 87 uint8_t length; 88 uint8_t major_version; 89 uint8_t minor_version; 90 uint16_t maximum_structure_size; 91 uint8_t entry_point_revision; 92 uint8_t formatted_area[5]; 93 uint8_t intermediate_anchor_string[5]; /* '_DMI_' */ 94 uint8_t intermediate_checksum; 95 uint16_t structure_table_length; 96 uint32_t structure_table_address; 97 uint16_t number_structures; 98 uint8_t BCD_revision; 99 }; 100 101 struct smbios_structure_header { 102 uint8_t type; 103 uint8_t length; 104 uint16_t handle; 105 }; 106 107 #endif /* _MACHINE_PC_BIOS_H_ */ 108