1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 1997 Michael Smith 5 * Copyright (c) 1998 Jonathan Lemon 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef _MACHINE_PC_BIOS_H_ 31 #define _MACHINE_PC_BIOS_H_ 32 33 /* 34 * Signature structure for the BIOS32 Service Directory header 35 */ 36 struct bios32_SDheader 37 { 38 u_int8_t sig[4]; 39 u_int32_t entry; 40 u_int8_t revision; 41 u_int8_t len; 42 u_int8_t cksum; 43 u_int8_t pad[5]; 44 }; 45 46 /* 47 * PnP BIOS presence structure 48 */ 49 struct PnPBIOS_table 50 { 51 u_int8_t sig[4]; /* "$PnP */ 52 u_int8_t version; /* should be 0x10 */ 53 u_int8_t len; /* total structure length */ 54 u_int16_t control; /* BIOS feature flags */ 55 u_int8_t cksum; /* checksum */ 56 u_int32_t evflagaddr; /* address of event notificaton flag */ 57 u_int16_t rmentryoffset; /* real-mode entry offset */ 58 u_int16_t rmentryseg; /* segment */ 59 u_int16_t pmentryoffset; /* protected-mode entry offset */ 60 u_int32_t pmentrybase; /* segment base */ 61 u_int32_t oemdevid; /* motherboard EISA ID */ 62 u_int16_t rmbiosseg; /* real-mode BIOS segment */ 63 u_int32_t pmdataseg; /* protected-mode data segment */ 64 } __packed; 65 66 /* 67 * PnP BIOS return codes 68 */ 69 #define PNP_SUCCESS 0x00 70 #define PNP_NOT_SET_STATICALLY 0x7f 71 #define PNP_UNKNOWN_FUNCTION 0x81 72 #define PNP_FUNCTION_NOT_SUPPORTED 0x82 73 #define PNP_INVALID_HANDLE 0x83 74 #define PNP_BAD_PARAMETER 0x84 75 #define PNP_SET_FAILED 0x85 76 #define PNP_EVENTS_NOT_PENDING 0x86 77 #define PNP_SYSTEM_NOT_DOCKED 0x87 78 #define PNP_NO_ISA_PNP_CARDS 0x88 79 #define PNP_UNABLE_TO_DETERMINE_DOCK_CAPABILITIES 0x89 80 #define PNP_CONFIG_CHANGE_FAILED_NO_BATTERY 0x8a 81 #define PNP_CONFIG_CHANGE_FAILED_RESOURCE_CONFLICT 0x8b 82 #define PNP_BUFFER_TOO_SMALL 0x8c 83 #define PNP_USE_ESCD_SUPPORT 0x8d 84 #define PNP_MESSAGE_NOT_SUPPORTED 0x8e 85 #define PNP_HARDWARE_ERROR 0x8f 86 87 /* 88 * DMI return codes 89 */ 90 #define DMI_SUCCESS 0x00 91 #define DMI_UNKNOWN_FUNCTION 0x81 92 #define DMI_FUNCTION_NOT_SUPPORTED 0x82 93 #define DMI_INVALID_HANDLE 0x83 94 #define DMI_BAD_PARAMETER 0x84 95 #define DMI_INVALID_SUBFUNCTION 0x85 96 #define DMI_NO_CHANGE 0x86 97 #define DMI_ADD_STRUCTURE_FAILED 0x87 98 #define DMI_READ_ONLY 0x8d 99 #define DMI_LOCK_NOT_SUPPORTED 0x90 100 #define DMI_CURRENTLY_LOCKED 0x91 101 #define DMI_INVALID_LOCK 0x92 102 103 /* 104 * format specifiers and defines for bios16() 105 * s = short (16 bits) 106 * i = int (32 bits) 107 * p = pointer (converted to seg:offset) 108 * C,D,U = selector (corresponding to code/data/utility segment) 109 */ 110 #define PNP_COUNT_DEVNODES "sppD", 0x00 111 #define PNP_GET_DEVNODE "sppsD", 0x01 112 #define PNP_SET_DEVNODE "sspsD", 0x02 113 #define PNP_GET_EVENT "spD", 0x03 114 #define PNP_SEND_MSG "ssD", 0x04 115 #define PNP_GET_DOCK_INFO "spD", 0x05 116 117 #define PNP_SEL_PRIBOOT "ssiiisspD", 0x07 118 #define PNP_GET_PRIBOOT "sspppppD", 0x08 119 #define PNP_SET_RESINFO "spD", 0x09 120 #define PNP_GET_RESINFO "spD", 0x0A 121 #define PNP_GET_APM_ID "sppD", 0x0B 122 123 #define PNP_GET_ISA_INFO "spD", 0x40 124 #define PNP_GET_ECSD_INFO "spppD", 0x41 125 #define PNP_READ_ESCD "spUD", 0x42 126 #define PNP_WRITE_ESCD "spUD", 0x43 127 128 #define PNP_GET_DMI_INFO "spppppD", 0x50 129 #define PNP_GET_DMI_STRUCTURE "sppUD", 0x51 130 #define PNP_SET_DMI_STRUCTURE "sppsUD" 0x52 131 #define PNP_GET_DMI_CHANGE "spUD" 0x53 132 #define PNP_DMI_CONTROL "sspsUD" 0x54 133 #define PNP_GET_GPNV_INFO "sppppD" 0x55 134 #define PNP_READ_GPNV_DATA "ssppUD" 0x56 135 #define PNP_WRITE_GPNV_DATA "sspsUD" 0x57 136 137 #define PNP_BOOT_CHECK "sp", 0x60 138 #define PNP_COUNT_IPL "sppp", 0x61 139 #define PNP_GET_BOOTPRI "spp", 0x62 140 #define PNP_SET_BOOTPRI "sp", 0x63 141 #define PNP_GET_LASTBOOT "sp", 0x64 142 #define PNP_GET_BOOTFIRST "sp", 0x65 143 #define PNP_SET_BOOTFIRST "sp", 0x66 144 145 /* 146 * PCI BIOS functions 147 */ 148 #define PCIBIOS_BIOS_PRESENT 0xb101 149 #define PCIBIOS_READ_CONFIG_BYTE 0xb108 150 #define PCIBIOS_READ_CONFIG_WORD 0xb109 151 #define PCIBIOS_READ_CONFIG_DWORD 0xb10a 152 #define PCIBIOS_WRITE_CONFIG_BYTE 0xb10b 153 #define PCIBIOS_WRITE_CONFIG_WORD 0xb10c 154 #define PCIBIOS_WRITE_CONFIG_DWORD 0xb10d 155 #define PCIBIOS_GET_IRQ_ROUTING 0xb10e 156 #define PCIBIOS_ROUTE_INTERRUPT 0xb10f 157 158 /* 159 * PCI interrupt routing table. 160 * 161 * $PIR in the BIOS segment contains a PIR_table 162 * int 1a:b106 returns PIR_table in buffer at es:(e)di 163 * int 1a:b18e returns PIR_table in buffer at es:(e)di 164 * int 1a:b406 returns es:di pointing to the BIOS PIR_table 165 */ 166 struct PIR_header 167 { 168 int8_t ph_signature[4]; 169 u_int16_t ph_version; 170 u_int16_t ph_length; 171 u_int8_t ph_router_bus; 172 u_int8_t ph_router_dev_fn; 173 u_int16_t ph_pci_irqs; 174 u_int16_t ph_router_vendor; 175 u_int16_t ph_router_device; 176 u_int32_t ph_miniport; 177 u_int8_t ph_res[11]; 178 u_int8_t ph_checksum; 179 } __packed; 180 181 struct PIR_intpin 182 { 183 u_int8_t link; 184 u_int16_t irqs; 185 } __packed; 186 187 struct PIR_entry 188 { 189 u_int8_t pe_bus; 190 u_int8_t pe_res1:3; 191 u_int8_t pe_device:5; 192 struct PIR_intpin pe_intpin[4]; 193 u_int8_t pe_slot; 194 u_int8_t pe_res3; 195 } __packed; 196 197 struct PIR_table 198 { 199 struct PIR_header pt_header; 200 struct PIR_entry pt_entry[0]; 201 } __packed; 202 203 /* 204 * Int 15:E820 'SMAP' structure 205 */ 206 #define SMAP_SIG 0x534D4150 /* 'SMAP' */ 207 208 #define SMAP_TYPE_MEMORY 1 209 #define SMAP_TYPE_RESERVED 2 210 #define SMAP_TYPE_ACPI_RECLAIM 3 211 #define SMAP_TYPE_ACPI_NVS 4 212 #define SMAP_TYPE_ACPI_ERROR 5 213 #define SMAP_TYPE_DISABLED 6 214 #define SMAP_TYPE_PMEM 7 215 #define SMAP_TYPE_PRAM 12 216 217 #define SMAP_XATTR_ENABLED 0x00000001 218 #define SMAP_XATTR_NON_VOLATILE 0x00000002 219 #define SMAP_XATTR_MASK (SMAP_XATTR_ENABLED | SMAP_XATTR_NON_VOLATILE) 220 221 struct bios_smap { 222 u_int64_t base; 223 u_int64_t length; 224 u_int32_t type; 225 } __packed; 226 227 /* Structure extended to include extended attribute field in ACPI 3.0. */ 228 struct bios_smap_xattr { 229 u_int64_t base; 230 u_int64_t length; 231 u_int32_t type; 232 u_int32_t xattr; 233 } __packed; 234 235 #ifdef _KERNEL 236 #define BIOS_PADDRTOVADDR(x) ((x) + PMAP_MAP_LOW) 237 #define BIOS_VADDRTOPADDR(x) ((x) - PMAP_MAP_LOW) 238 239 struct bios_oem_signature { 240 char * anchor; /* search anchor string in BIOS memory */ 241 size_t offset; /* offset from anchor (may be negative) */ 242 size_t totlen; /* total length of BIOS string to copy */ 243 } __packed; 244 245 struct bios_oem_range { 246 u_int from; /* shouldn't be below 0xe0000 */ 247 u_int to; /* shouldn't be above 0xfffff */ 248 } __packed; 249 250 struct bios_oem { 251 struct bios_oem_range range; 252 struct bios_oem_signature signature[]; 253 } __packed; 254 255 struct segment_info { 256 u_int base; 257 u_int limit; 258 }; 259 260 #define BIOSCODE_FLAG 0x01 261 #define BIOSDATA_FLAG 0x02 262 #define BIOSUTIL_FLAG 0x04 263 #define BIOSARGS_FLAG 0x08 264 265 struct bios_segments { 266 struct segment_info code32; /* 32-bit code (mandatory) */ 267 struct segment_info code16; /* 16-bit code */ 268 struct segment_info data; /* 16-bit data */ 269 struct segment_info util; /* 16-bit utility */ 270 struct segment_info args; /* 16-bit args */ 271 }; 272 273 struct bios_regs { 274 u_int eax; 275 u_int ebx; 276 u_int ecx; 277 u_int edx; 278 u_int esi; 279 u_int edi; 280 }; 281 282 struct bios_args { 283 u_int entry; /* entry point of routine */ 284 struct bios_regs r; 285 struct bios_segments seg; 286 }; 287 288 /* 289 * BIOS32 Service Directory entry. Caller supplies name, bios32_SDlookup 290 * fills in the rest of the details. 291 */ 292 struct bios32_SDentry 293 { 294 union 295 { 296 u_int8_t name[4]; /* service identifier */ 297 u_int32_t id; /* as a 32-bit value */ 298 } ident; 299 u_int32_t base; /* base of service */ 300 u_int32_t len; /* service length */ 301 u_int32_t entry; /* entrypoint offset from base */ 302 vm_offset_t ventry; /* entrypoint in kernel virtual segment */ 303 }; 304 305 /* 306 * Exported lookup results 307 */ 308 extern struct bios32_SDentry PCIbios; 309 310 int bios_oem_strings(struct bios_oem *oem, u_char *buffer, size_t maxlen); 311 uint32_t bios_sigsearch(uint32_t start, u_char *sig, int siglen, int paralen, 312 int sigofs); 313 int bios16(struct bios_args *, char *, ...); 314 int bios16_call(struct bios_regs *, char *); 315 int bios32(struct bios_regs *, u_int, u_short); 316 int bios32_SDlookup(struct bios32_SDentry *ent); 317 void set_bios_selectors(struct bios_segments *, int); 318 319 #endif 320 321 #endif /* _MACHINE_PC_BIOS_H_ */ 322