bios.h revision 67310
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 67310 2000-10-19 08:02:46Z msmith $ 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 vm_offset_t ventry; /* entrypoint in kernel virtual segment */ 58}; 59 60extern int bios32_SDlookup(struct bios32_SDentry *ent); 61extern u_int32_t bios_sigsearch(u_int32_t start, u_char *sig, int siglen, 62 int paralen, int sigofs); 63 64#define BIOS_PADDRTOVADDR(x) (((x) - ISA_HOLE_START) + atdevbase) 65#define BIOS_VADDRTOPADDR(x) (((x) - atdevbase) + ISA_HOLE_START) 66 67 68/* 69 * PnP BIOS presence structure 70 */ 71struct PnPBIOS_table 72{ 73 u_int8_t sig[4]; /* "$PnP */ 74 u_int8_t version; /* should be 0x10 */ 75 u_int8_t len; /* total structure length */ 76 u_int16_t control; /* BIOS feature flags */ 77 u_int8_t cksum; /* checksum */ 78 u_int32_t evflagaddr; /* address of event notificaton flag */ 79 u_int16_t rmentryoffset; /* real-mode entry offset */ 80 u_int16_t rmentryseg; /* segment */ 81 u_int16_t pmentryoffset; /* protected-mode entry offset */ 82 u_int32_t pmentrybase; /* segment base */ 83 u_int32_t oemdevid; /* motherboard EISA ID */ 84 u_int16_t rmbiosseg; /* real-mode BIOS segment */ 85 u_int32_t pmdataseg; /* protected-mode data segment */ 86} __attribute__ ((packed)); 87 88 89/* 90 * Exported lookup results 91 */ 92extern struct bios32_SDentry PCIbios; 93extern struct PnPBIOS_table *PnPBIOStable; 94 95struct segment_info { 96 u_int base; 97 u_int limit; 98}; 99 100#define BIOSCODE_FLAG 0x01 101#define BIOSDATA_FLAG 0x02 102#define BIOSUTIL_FLAG 0x04 103#define BIOSARGS_FLAG 0x08 104 105struct bios_segments { 106 struct segment_info code32; /* 32-bit code (mandatory) */ 107 struct segment_info code16; /* 16-bit code */ 108 struct segment_info data; /* 16-bit data */ 109 struct segment_info util; /* 16-bit utility */ 110 struct segment_info args; /* 16-bit args */ 111}; 112 113struct bios_regs { 114 u_int eax; 115 u_int ebx; 116 u_int ecx; 117 u_int edx; 118 u_int esi; 119 u_int edi; 120}; 121 122struct bios_args { 123 u_int entry; /* entry point of routine */ 124 struct bios_regs r; 125 struct bios_segments seg; 126}; 127 128/* 129 * PnP BIOS return codes 130 */ 131#define PNP_SUCCESS 0x00 132#define PNP_NOT_SET_STATICALLY 0x7f 133#define PNP_UNKNOWN_FUNCTION 0x81 134#define PNP_FUNTION_NOT_SUPPORTED 0x82 135#define PNP_INVALID_HANDLE 0x83 136#define PNP_BAD_PARAMETER 0x84 137#define PNP_SET_FAILED 0x85 138#define PNP_EVENTS_NOT_PENDING 0x86 139#define PNP_SYSTEM_NOT_DOCKED 0x87 140#define PNP_NO_ISA_PNP_CARDS 0x88 141#define PNP_UNABLE_TO_DETERMINE_DOCK_CAPABILITIES 0x89 142#define PNP_CONFIG_CHANGE_FAILED_NO_BATTERY 0x8a 143#define PNP_CONFIG_CHANGE_FAILED_RESOURCE_CONFLICT 0x8b 144#define PNP_BUFFER_TOO_SMALL 0x8c 145#define PNP_USE_ESCD_SUPPORT 0x8d 146#define PNP_MESSAGE_NOT_SUPPORTED 0x8e 147#define PNP_HARDWARE_ERROR 0x8f 148 149/* 150 * DMI return codes 151 */ 152#define DMI_SUCCESS 0x00 153#define DMI_UNKNOWN_FUNCTION 0x81 154#define DMI_FUNCTION_NOT_SUPPORTED 0x82 155#define DMI_INVALID_HANDLE 0x83 156#define DMI_BAD_PARAMETER 0x84 157#define DMI_INVALID_SUBFUNCTION 0x85 158#define DMI_NO_CHANGE 0x86 159#define DMI_ADD_STRUCTURE_FAILED 0x87 160#define DMI_READ_ONLY 0x8d 161#define DMI_LOCK_NOT_SUPPORTED 0x90 162#define DMI_CURRENTLY_LOCKED 0x91 163#define DMI_INVALID_LOCK 0x92 164 165/* 166 * format specifiers and defines for bios16() 167 * s = short (16 bits) 168 * i = int (32 bits) 169 * p = pointer (converted to seg:offset) 170 * C,D,U = selector (corresponding to code/data/utility segment) 171 */ 172#define PNP_COUNT_DEVNODES "sppD", 0x00 173#define PNP_GET_DEVNODE "sppsD", 0x01 174#define PNP_SET_DEVNODE "sppsD", 0x02 175#define PNP_GET_EVENT "spD", 0x03 176#define PNP_SEND_MSG "ssD", 0x04 177#define PNP_GET_DOCK_INFO "spD", 0x05 178 179#define PNP_SEL_PRIBOOT "ssiiisspD", 0x07 180#define PNP_GET_PRIBOOT "sspppppD", 0x08 181#define PNP_SET_RESINFO "spD", 0x09 182#define PNP_GET_RESINFO "spD", 0x0A 183#define PNP_GET_APM_ID "sppD", 0x0B 184 185#define PNP_GET_ISA_INFO "spD", 0x40 186#define PNP_GET_ECSD_INFO "spppD", 0x41 187#define PNP_READ_ESCD "spUD", 0x42 188#define PNP_WRITE_ESCD "spUD", 0x43 189 190#define PNP_GET_DMI_INFO "spppppD", 0x50 191#define PNP_GET_DMI_STRUCTURE "sppUD", 0x51 192#define PNP_SET_DMI_STRUCTURE "sppsUD" 0x52 193#define PNP_GET_DMI_CHANGE "spUD" 0x53 194#define PNP_DMI_CONTROL "sspsUD" 0x54 195#define PNP_GET_GPNV_INFO "sppppD" 0x55 196#define PNP_READ_GPNV_DATA "ssppUD" 0x56 197#define PNP_WRITE_GPNV_DATA "sspsUD" 0x57 198 199#define PNP_BOOT_CHECK "sp", 0x60 200#define PNP_COUNT_IPL "sppp", 0x61 201#define PNP_GET_BOOTPRI "spp", 0x62 202#define PNP_SET_BOOTPRI "sp", 0x63 203#define PNP_GET_LASTBOOT "sp", 0x64 204#define PNP_GET_BOOTFIRST "sp", 0x65 205#define PNP_SET_BOOTFIRST "sp", 0x66 206 207/* 208 * PCI BIOS functions 209 */ 210#define PCIBIOS_READ_CONFIG_BYTE 0xb108 211#define PCIBIOS_READ_CONFIG_WORD 0xb109 212#define PCIBIOS_READ_CONFIG_DWORD 0xb10a 213#define PCIBIOS_WRITE_CONFIG_BYTE 0xb10b 214#define PCIBIOS_WRITE_CONFIG_WORD 0xb10c 215#define PCIBIOS_WRITE_CONFIG_DWORD 0xb10d 216#define PCIBIOS_GET_IRQ_ROUTING 0xb10e 217#define PCIBIOS_ROUTE_INTERRUPT 0xb10f 218 219extern int bios16(struct bios_args *, char *, ...); 220extern int bios16_call(struct bios_regs *, char *); 221extern int bios32(struct bios_regs *, u_int, u_short); 222extern void set_bios_selectors(struct bios_segments *, int); 223 224/* 225 * PCI interrupt routing table. 226 * 227 * $PIR in the BIOS segment contains a PIR_table 228 * int 1a:b106 returns PIR_table in buffer at es:(e)di 229 * int 1a:b18e returns PIR_table in buffer at es:(e)di 230 * int 1a:b406 returns es:di pointing to the BIOS PIR_table 231 */ 232struct PIR_header 233{ 234 int8_t ph_signature[4]; 235 u_int16_t ph_version; 236 u_int16_t ph_length; 237 u_int8_t ph_router_bus; 238 u_int8_t ph_router_dev_fn; 239 u_int16_t ph_pci_irqs; 240 u_int16_t ph_router_vendor; 241 u_int16_t ph_router_device; 242 u_int32_t ph_miniport; 243 u_int8_t ph_res[11]; 244 u_int8_t ph_checksum; 245} __attribute__ ((packed)); 246 247struct PIR_intpin 248{ 249 u_int8_t link; 250 u_int16_t irqs; 251} __attribute__ ((packed)); 252 253struct PIR_entry 254{ 255 u_int8_t pe_bus; 256 u_int8_t pe_res1:3; 257 u_int8_t pe_device:5; 258 struct PIR_intpin pe_intpin[4]; 259 u_int8_t pe_slot; 260 u_int8_t pe_res3; 261} __attribute__ ((packed)); 262 263struct PIR_table 264{ 265 struct PIR_header pt_header; 266 struct PIR_entry pt_entry[0]; 267} __attribute__ ((packed)); 268 269/* 270 * Int 15:E820 'SMAP' structure 271 * 272 * XXX add constants for type 273 */ 274#define SMAP_SIG 0x534D4150 /* 'SMAP' */ 275struct bios_smap { 276 u_int64_t base; 277 u_int64_t length; 278 u_int32_t type; 279} __attribute__ ((packed)); 280