1 /*- 2 * Copyright (c) 1997 Michael Smith 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $Id$ 27 */ 28 29 /* 30 * Signature structure for the BIOS32 Service Directory header 31 */ 32 struct bios32_SDheader 33 { 34 u_int8_t sig[4]; 35 u_int32_t entry; 36 u_int8_t revision; 37 u_int8_t len; 38 u_int8_t cksum; 39 u_int8_t pad[5]; 40 }; 41 42 /* 43 * BIOS32 Service Directory entry. Caller supplies name, bios32_SDlookup 44 * fills in the rest of the details. 45 */ 46 struct bios32_SDentry 47 { 48 union 49 { 50 u_int8_t name[4]; /* service identifier */ 51 u_int32_t id; /* as a 32-bit value */ 52 } ident; 53 u_int32_t base; /* base of service */ 54 u_int32_t len; /* service length */ 55 u_int32_t entry; /* entrypoint offset from base */ 56 }; 57 58 extern int bios32_SDlookup(struct bios32_SDentry *ent); 59 extern u_int32_t bios_sigsearch(u_int32_t start, u_char *sig, int siglen, 60 int paralen, int sigofs); 61 62 /* 63 * Call a 32-bit BIOS function 64 */ 65 struct bios32_args { 66 u_long eax; 67 u_long ebx; 68 u_long ecx; 69 u_long edx; 70 }; 71 extern void bios32(caddr_t func_addr, struct bios32_args *args); 72 73 #define BIOS_PADDRTOVADDR(x) (((x) - ISA_HOLE_START) + atdevbase) 74 #define BIOS_VADDRTOPADDR(x) (((x) - atdevbase) + ISA_HOLE_START) 75 76 77 /* 78 * System Management BIOS / Desktop Management Interface tables 79 */ 80 81 struct DMI_table 82 { 83 u_int8_t sig[5]; /* "_DMI_" */ 84 u_int8_t cksum; /* checksum */ 85 u_int16_t st_size; /* total length of SMBIOS table (bytes)*/ 86 u_int32_t st_base; /* base address of the SMBIOS table (physical) */ 87 u_int16_t st_entries; /* total number of structures present in the table */ 88 u_int8_t bcd_revision; /* interface revision number */ 89 u_int8_t pad[2]; 90 }; 91 92 struct SMBIOS_table 93 { 94 u_int8_t sig[4]; /* "_SM_" */ 95 u_int8_t cksum; /* checksum */ 96 u_int8_t len; /* structure length */ 97 u_int8_t major, minor; /* major/minor revision numbers */ 98 u_int16_t st_maxsize; /* largest structure size (bytes) */ 99 u_int8_t revision; /* entrypoint revision */ 100 u_int8_t pad[5]; 101 struct DMI_table dmi; /* follows immediately */ 102 }; 103 104 105 /* 106 * Exported lookup results 107 */ 108 extern struct bios32_SDentry PCIbios; 109 extern struct SMBIOS_table *SMBIOS_table; 110 extern struct DMI_table *DMI_table; 111 112 113 114