1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 1997 Michael Smith 5 * Copyright (c) 1998 Jonathan Lemon 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32 #ifndef _MACHINE_PC_BIOS_H_ 33 #define _MACHINE_PC_BIOS_H_ 34 35 /* 36 * Int 15:E820 'SMAP' structure 37 */ 38 #define SMAP_SIG 0x534D4150 /* 'SMAP' */ 39 40 #define SMAP_TYPE_MEMORY 1 41 #define SMAP_TYPE_RESERVED 2 42 #define SMAP_TYPE_ACPI_RECLAIM 3 43 #define SMAP_TYPE_ACPI_NVS 4 44 #define SMAP_TYPE_ACPI_ERROR 5 45 #define SMAP_TYPE_DISABLED 6 46 #define SMAP_TYPE_PMEM 7 47 #define SMAP_TYPE_PRAM 12 48 49 #define SMAP_XATTR_ENABLED 0x00000001 50 #define SMAP_XATTR_NON_VOLATILE 0x00000002 51 #define SMAP_XATTR_MASK (SMAP_XATTR_ENABLED | SMAP_XATTR_NON_VOLATILE) 52 53 struct bios_smap { 54 u_int64_t base; 55 u_int64_t length; 56 u_int32_t type; 57 } __packed; 58 59 /* Structure extended to include extended attribute field in ACPI 3.0. */ 60 struct bios_smap_xattr { 61 u_int64_t base; 62 u_int64_t length; 63 u_int32_t type; 64 u_int32_t xattr; 65 } __packed; 66 67 /* 68 * System Management BIOS 69 */ 70 #define SMBIOS_START 0xf0000 71 #define SMBIOS_STEP 0x10 72 #define SMBIOS_OFF 0 73 #define SMBIOS_LEN 4 74 #define SMBIOS_SIG "_SM_" 75 76 struct smbios_eps { 77 uint8_t anchor_string[4]; /* '_SM_' */ 78 uint8_t checksum; 79 uint8_t length; 80 uint8_t major_version; 81 uint8_t minor_version; 82 uint16_t maximum_structure_size; 83 uint8_t entry_point_revision; 84 uint8_t formatted_area[5]; 85 uint8_t intermediate_anchor_string[5]; /* '_DMI_' */ 86 uint8_t intermediate_checksum; 87 uint16_t structure_table_length; 88 uint32_t structure_table_address; 89 uint16_t number_structures; 90 uint8_t BCD_revision; 91 }; 92 93 struct smbios_structure_header { 94 uint8_t type; 95 uint8_t length; 96 uint16_t handle; 97 }; 98 99 #ifdef _KERNEL 100 #define BIOS_PADDRTOVADDR(x) ((x) + KERNBASE) 101 #define BIOS_VADDRTOPADDR(x) ((x) - KERNBASE) 102 103 struct bios_oem_signature { 104 char * anchor; /* search anchor string in BIOS memory */ 105 size_t offset; /* offset from anchor (may be negative) */ 106 size_t totlen; /* total length of BIOS string to copy */ 107 } __packed; 108 109 struct bios_oem_range { 110 u_int from; /* shouldn't be below 0xe0000 */ 111 u_int to; /* shouldn't be above 0xfffff */ 112 } __packed; 113 114 struct bios_oem { 115 struct bios_oem_range range; 116 struct bios_oem_signature signature[]; 117 } __packed; 118 119 int bios_oem_strings(struct bios_oem *oem, u_char *buffer, size_t maxlen); 120 uint32_t bios_sigsearch(uint32_t start, u_char *sig, int siglen, int paralen, 121 int sigofs); 122 void bios_add_smap_entries(struct bios_smap *smapbase, u_int32_t smapsize, 123 vm_paddr_t *physmap, int *physmap_idx); 124 #endif 125 126 #endif /* _MACHINE_PC_BIOS_H_ */ 127