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 /* 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 #ifdef _KERNEL 87 #define BIOS_PADDRTOVADDR(x) ((x) + KERNBASE) 88 #define BIOS_VADDRTOPADDR(x) ((x) - KERNBASE) 89 90 struct bios_oem_signature { 91 char * anchor; /* search anchor string in BIOS memory */ 92 size_t offset; /* offset from anchor (may be negative) */ 93 size_t totlen; /* total length of BIOS string to copy */ 94 } __packed; 95 96 struct bios_oem_range { 97 u_int from; /* shouldn't be below 0xe0000 */ 98 u_int to; /* shouldn't be above 0xfffff */ 99 } __packed; 100 101 struct bios_oem { 102 struct bios_oem_range range; 103 struct bios_oem_signature signature[]; 104 } __packed; 105 106 int bios_oem_strings(struct bios_oem *oem, u_char *buffer, size_t maxlen); 107 uint32_t bios_sigsearch(uint32_t start, u_char *sig, int siglen, int paralen, 108 int sigofs); 109 void bios_add_smap_entries(struct bios_smap *smapbase, u_int32_t smapsize, 110 vm_paddr_t *physmap, int *physmap_idx); 111 #endif 112 113 #endif /* _MACHINE_PC_BIOS_H_ */ 114