bios.h revision 50477
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: head/sys/i386/include/pc/bios.h 50477 1999-08-28 01:08:13Z peter $ 28 */ 29 30/* 31 * Signature structure for the BIOS32 Service Directory header 32 */ 33struct bios32_SDheader 34{ 35 u_int8_t sig[4]; 36 u_int32_t entry; 37 u_int8_t revision; 38 u_int8_t len; 39 u_int8_t cksum; 40 u_int8_t pad[5]; 41}; 42 43/* 44 * BIOS32 Service Directory entry. Caller supplies name, bios32_SDlookup 45 * fills in the rest of the details. 46 */ 47struct bios32_SDentry 48{ 49 union 50 { 51 u_int8_t name[4]; /* service identifier */ 52 u_int32_t id; /* as a 32-bit value */ 53 } ident; 54 u_int32_t base; /* base of service */ 55 u_int32_t len; /* service length */ 56 u_int32_t entry; /* entrypoint offset from base */ 57}; 58 59extern int bios32_SDlookup(struct bios32_SDentry *ent); 60extern u_int32_t bios_sigsearch(u_int32_t start, u_char *sig, int siglen, 61 int paralen, int sigofs); 62 63#define BIOS_PADDRTOVADDR(x) (((x) - ISA_HOLE_START) + atdevbase) 64#define BIOS_VADDRTOPADDR(x) (((x) - atdevbase) + ISA_HOLE_START) 65 66 67/* 68 * PnP BIOS presence structure 69 */ 70struct PnPBIOS_table 71{ 72 u_int8_t sig[4]; /* "$PnP */ 73 u_int8_t version; /* should be 0x10 */ 74 u_int8_t len; /* total structure length */ 75 u_int16_t control; /* BIOS feature flags */ 76 u_int8_t cksum; /* checksum */ 77 u_int32_t evflagaddr; /* address of event notificaton flag */ 78 u_int16_t rmentryoffset; /* real-mode entry offset */ 79 u_int16_t rmentryseg; /* segment */ 80 u_int16_t pmentryoffset; /* protected-mode entry offset */ 81 u_int32_t pmentrybase; /* segment base */ 82 u_int32_t oemdevid; /* motherboard EISA ID */ 83 u_int16_t rmbiosseg; /* real-mode BIOS segment */ 84 u_int32_t pmdataseg; /* protected-mode data segment */ 85} __attribute__ ((packed)); 86 87 88/* 89 * Exported lookup results 90 */ 91extern struct bios32_SDentry PCIbios; 92extern struct PnPBIOS_table *PnPBIOStable; 93 94struct segment_info { 95 u_int base; 96 u_int limit; 97}; 98 99#define BIOSCODE_FLAG 0x01 100#define BIOSDATA_FLAG 0x02 101#define BIOSUTIL_FLAG 0x04 102#define BIOSARGS_FLAG 0x08 103 104struct bios_segments { 105 struct segment_info code32; /* 32-bit code (mandatory) */ 106 struct segment_info code16; /* 16-bit code */ 107 struct segment_info data; /* 16-bit data */ 108 struct segment_info util; /* 16-bit utility */ 109 struct segment_info args; /* 16-bit args */ 110}; 111 112struct bios_regs { 113 u_int eax; 114 u_int ebx; 115 u_int ecx; 116 u_int edx; 117 u_int esi; 118 u_int edi; 119}; 120 121struct bios_args { 122 u_int entry; /* entry point of routine */ 123 struct bios_regs r; 124 struct bios_segments seg; 125}; 126 127/* 128 * PnP BIOS return codes 129 */ 130#define PNP_SUCCESS 0x00 131#define PNP_NOT_SET_STATICALLY 0x7f 132#define PNP_UNKNOWN_FUNCTION 0x81 133#define PNP_FUNTION_NOT_SUPPORTED 0x82 134#define PNP_INVALID_HANDLE 0x83 135#define PNP_BAD_PARAMETER 0x84 136#define PNP_SET_FAILED 0x85 137#define PNP_EVENTS_NOT_PENDING 0x86 138#define PNP_SYSTEM_NOT_DOCKED 0x87 139#define PNP_NO_ISA_PNP_CARDS 0x88 140#define PNP_UNABLE_TO_DETERMINE_DOCK_CAPABILITIES 0x89 141#define PNP_CONFIG_CHANGE_FAILED_NO_BATTERY 0x8a 142#define PNP_CONFIG_CHANGE_FAILED_RESOURCE_CONFLICT 0x8b 143#define PNP_BUFFER_TOO_SMALL 0x8c 144#define PNP_USE_ESCD_SUPPORT 0x8d 145#define PNP_MESSAGE_NOT_SUPPORTED 0x8e 146#define PNP_HARDWARE_ERROR 0x8f 147 148/* 149 * DMI return codes 150 */ 151#define DMI_SUCCESS 0x00 152#define DMI_UNKNOWN_FUNCTION 0x81 153#define DMI_FUNCTION_NOT_SUPPORTED 0x82 154#define DMI_INVALID_HANDLE 0x83 155#define DMI_BAD_PARAMETER 0x84 156#define DMI_INVALID_SUBFUNCTION 0x85 157#define DMI_NO_CHANGE 0x86 158#define DMI_ADD_STRUCTURE_FAILED 0x87 159#define DMI_READ_ONLY 0x8d 160#define DMI_LOCK_NOT_SUPPORTED 0x90 161#define DMI_CURRENTLY_LOCKED 0x91 162#define DMI_INVALID_LOCK 0x92 163 164/* 165 * format specifiers and defines for bios16() 166 * s = short (16 bits) 167 * i = int (32 bits) 168 * p = pointer (converted to seg:offset) 169 * C,D,U = selector (corresponding to code/data/utility segment) 170 */ 171#define PNP_COUNT_DEVNODES "sppD", 0x00 172#define PNP_GET_DEVNODE "sppsD", 0x01 173#define PNP_SET_DEVNODE "sppsD", 0x02 174#define PNP_GET_EVENT "spD", 0x03 175#define PNP_SEND_MSG "ssD", 0x04 176#define PNP_GET_DOCK_INFO "spD", 0x05 177 178#define PNP_SEL_PRIBOOT "ssiiisspD", 0x07 179#define PNP_GET_PRIBOOT "sspppppD", 0x08 180#define PNP_SET_RESINFO "spD", 0x09 181#define PNP_GET_RESINFO "spD", 0x0A 182#define PNP_GET_APM_ID "sppD", 0x0B 183 184#define PNP_GET_ISA_INFO "spD", 0x40 185#define PNP_GET_ECSD_INFO "spppD", 0x41 186#define PNP_READ_ESCD "spUD", 0x42 187#define PNP_WRITE_ESCD "spUD", 0x43 188 189#define PNP_GET_DMI_INFO "spppppD", 0x50 190#define PNP_GET_DMI_STRUCTURE "sppUD", 0x51 191#define PNP_SET_DMI_STRUCTURE "sppsUD" 0x52 192#define PNP_GET_DMI_CHANGE "spUD" 0x53 193#define PNP_DMI_CONTROL "sspsUD" 0x54 194#define PNP_GET_GPNV_INFO "sppppD" 0x55 195#define PNP_READ_GPNV_DATA "ssppUD" 0x56 196#define PNP_WRITE_GPNV_DATA "sspsUD" 0x57 197 198#define PNP_BOOT_CHECK "sp", 0x60 199#define PNP_COUNT_IPL "sppp", 0x61 200#define PNP_GET_BOOTPRI "spp", 0x62 201#define PNP_SET_BOOTPRI "sp", 0x63 202#define PNP_GET_LASTBOOT "sp", 0x64 203#define PNP_GET_BOOTFIRST "sp", 0x65 204#define PNP_SET_BOOTFIRST "sp", 0x66 205 206extern int bios16(struct bios_args *, char *, ...); 207extern int bios16_call(struct bios_regs *, char *); 208extern int bios32(struct bios_regs *, u_int, u_short); 209extern void set_bios_selectors(struct bios_segments *, int); 210