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