bios.h revision 302408
15483Swollman/*- 25483Swollman * Copyright (c) 1997 Michael Smith 35483Swollman * Copyright (c) 1998 Jonathan Lemon 45483Swollman * All rights reserved. 55483Swollman * 65483Swollman * Redistribution and use in source and binary forms, with or without 75483Swollman * modification, are permitted provided that the following conditions 85483Swollman * are met: 95483Swollman * 1. Redistributions of source code must retain the above copyright 105483Swollman * notice, this list of conditions and the following disclaimer. 115483Swollman * 2. Redistributions in binary form must reproduce the above copyright 12263142Seadler * notice, this list of conditions and the following disclaimer in the 135483Swollman * documentation and/or other materials provided with the distribution. 145483Swollman * 155483Swollman * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 165483Swollman * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 175483Swollman * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 185483Swollman * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 195483Swollman * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 205483Swollman * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 215483Swollman * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 225483Swollman * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 235483Swollman * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 245483Swollman * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 255483Swollman * SUCH DAMAGE. 265483Swollman * 275483Swollman * $FreeBSD: stable/11/sys/i386/include/pc/bios.h 270828 2014-08-29 21:25:47Z jhb $ 285483Swollman */ 2967662Snik 305483Swollman#ifndef _MACHINE_PC_BIOS_H_ 315483Swollman#define _MACHINE_PC_BIOS_H_ 325483Swollman 335483Swollman/* 345483Swollman * Signature structure for the BIOS32 Service Directory header 3569341Sru */ 3667662Snikstruct bios32_SDheader 3767662Snik{ 3867662Snik u_int8_t sig[4]; 3967662Snik u_int32_t entry; 405483Swollman u_int8_t revision; 4167662Snik u_int8_t len; 425483Swollman u_int8_t cksum; 435483Swollman u_int8_t pad[5]; 445483Swollman}; 455483Swollman 465483Swollman/* 475483Swollman * PnP BIOS presence structure 485483Swollman */ 495483Swollmanstruct PnPBIOS_table 505483Swollman{ 5197109Sru u_int8_t sig[4]; /* "$PnP */ 525483Swollman u_int8_t version; /* should be 0x10 */ 535483Swollman u_int8_t len; /* total structure length */ 545483Swollman u_int16_t control; /* BIOS feature flags */ 555483Swollman u_int8_t cksum; /* checksum */ 565483Swollman u_int32_t evflagaddr; /* address of event notificaton flag */ 575483Swollman u_int16_t rmentryoffset; /* real-mode entry offset */ 5897109Sru u_int16_t rmentryseg; /* segment */ 5967662Snik u_int16_t pmentryoffset; /* protected-mode entry offset */ 605483Swollman u_int32_t pmentrybase; /* segment base */ 615483Swollman u_int32_t oemdevid; /* motherboard EISA ID */ 625483Swollman u_int16_t rmbiosseg; /* real-mode BIOS segment */ 635483Swollman u_int32_t pmdataseg; /* protected-mode data segment */ 6497109Sru} __packed; 6567662Snik 665483Swollman/* 675483Swollman * PnP BIOS return codes 685483Swollman */ 695483Swollman#define PNP_SUCCESS 0x00 7097109Sru#define PNP_NOT_SET_STATICALLY 0x7f 7167662Snik#define PNP_UNKNOWN_FUNCTION 0x81 725483Swollman#define PNP_FUNCTION_NOT_SUPPORTED 0x82 735483Swollman#define PNP_INVALID_HANDLE 0x83 745483Swollman#define PNP_BAD_PARAMETER 0x84 755483Swollman#define PNP_SET_FAILED 0x85 765483Swollman#define PNP_EVENTS_NOT_PENDING 0x86 775483Swollman#define PNP_SYSTEM_NOT_DOCKED 0x87 785483Swollman#define PNP_NO_ISA_PNP_CARDS 0x88 7997109Sru#define PNP_UNABLE_TO_DETERMINE_DOCK_CAPABILITIES 0x89 8067662Snik#define PNP_CONFIG_CHANGE_FAILED_NO_BATTERY 0x8a 815483Swollman#define PNP_CONFIG_CHANGE_FAILED_RESOURCE_CONFLICT 0x8b 825483Swollman#define PNP_BUFFER_TOO_SMALL 0x8c 8367662Snik#define PNP_USE_ESCD_SUPPORT 0x8d 8467662Snik#define PNP_MESSAGE_NOT_SUPPORTED 0x8e 8567662Snik#define PNP_HARDWARE_ERROR 0x8f 8667662Snik 875483Swollman/* 885483Swollman * DMI return codes 895483Swollman */ 905483Swollman#define DMI_SUCCESS 0x00 915483Swollman#define DMI_UNKNOWN_FUNCTION 0x81 925483Swollman#define DMI_FUNCTION_NOT_SUPPORTED 0x82 935483Swollman#define DMI_INVALID_HANDLE 0x83 945483Swollman#define DMI_BAD_PARAMETER 0x84 955483Swollman#define DMI_INVALID_SUBFUNCTION 0x85 965483Swollman#define DMI_NO_CHANGE 0x86 975483Swollman#define DMI_ADD_STRUCTURE_FAILED 0x87 985483Swollman#define DMI_READ_ONLY 0x8d 995483Swollman#define DMI_LOCK_NOT_SUPPORTED 0x90 10097109Sru#define DMI_CURRENTLY_LOCKED 0x91 10167662Snik#define DMI_INVALID_LOCK 0x92 1025483Swollman 1035483Swollman/* 1045483Swollman * format specifiers and defines for bios16() 1055483Swollman * s = short (16 bits) 1065483Swollman * i = int (32 bits) 10767662Snik * p = pointer (converted to seg:offset) 1085483Swollman * C,D,U = selector (corresponding to code/data/utility segment) 1095483Swollman */ 1105483Swollman#define PNP_COUNT_DEVNODES "sppD", 0x00 1115483Swollman#define PNP_GET_DEVNODE "sppsD", 0x01 1125483Swollman#define PNP_SET_DEVNODE "sspsD", 0x02 11397109Sru#define PNP_GET_EVENT "spD", 0x03 11497109Sru#define PNP_SEND_MSG "ssD", 0x04 11567662Snik#define PNP_GET_DOCK_INFO "spD", 0x05 1165483Swollman 1175483Swollman#define PNP_SEL_PRIBOOT "ssiiisspD", 0x07 1185483Swollman#define PNP_GET_PRIBOOT "sspppppD", 0x08 1195483Swollman#define PNP_SET_RESINFO "spD", 0x09 1205483Swollman#define PNP_GET_RESINFO "spD", 0x0A 1215483Swollman#define PNP_GET_APM_ID "sppD", 0x0B 1225483Swollman 1235483Swollman#define PNP_GET_ISA_INFO "spD", 0x40 1245483Swollman#define PNP_GET_ECSD_INFO "spppD", 0x41 1255483Swollman#define PNP_READ_ESCD "spUD", 0x42 1265483Swollman#define PNP_WRITE_ESCD "spUD", 0x43 1275483Swollman 1285483Swollman#define PNP_GET_DMI_INFO "spppppD", 0x50 1295483Swollman#define PNP_GET_DMI_STRUCTURE "sppUD", 0x51 13067662Snik#define PNP_SET_DMI_STRUCTURE "sppsUD" 0x52 1315483Swollman#define PNP_GET_DMI_CHANGE "spUD" 0x53 1325483Swollman#define PNP_DMI_CONTROL "sspsUD" 0x54 1335483Swollman#define PNP_GET_GPNV_INFO "sppppD" 0x55 1345483Swollman#define PNP_READ_GPNV_DATA "ssppUD" 0x56 13597109Sru#define PNP_WRITE_GPNV_DATA "sspsUD" 0x57 13667662Snik 1375483Swollman#define PNP_BOOT_CHECK "sp", 0x60 1385483Swollman#define PNP_COUNT_IPL "sppp", 0x61 13967662Snik#define PNP_GET_BOOTPRI "spp", 0x62 14067662Snik#define PNP_SET_BOOTPRI "sp", 0x63 14167662Snik#define PNP_GET_LASTBOOT "sp", 0x64 14267662Snik#define PNP_GET_BOOTFIRST "sp", 0x65 1435483Swollman#define PNP_SET_BOOTFIRST "sp", 0x66 1445483Swollman 1455483Swollman/* 14667662Snik * PCI BIOS functions 1475483Swollman */ 1485483Swollman#define PCIBIOS_BIOS_PRESENT 0xb101 14967662Snik#define PCIBIOS_READ_CONFIG_BYTE 0xb108 15067662Snik#define PCIBIOS_READ_CONFIG_WORD 0xb109 15167662Snik#define PCIBIOS_READ_CONFIG_DWORD 0xb10a 15267662Snik#define PCIBIOS_WRITE_CONFIG_BYTE 0xb10b 1535483Swollman#define PCIBIOS_WRITE_CONFIG_WORD 0xb10c 1545483Swollman#define PCIBIOS_WRITE_CONFIG_DWORD 0xb10d 1555483Swollman#define PCIBIOS_GET_IRQ_ROUTING 0xb10e 1565483Swollman#define PCIBIOS_ROUTE_INTERRUPT 0xb10f 15767662Snik 1585483Swollman/* 1595483Swollman * PCI interrupt routing table. 1605483Swollman * 1615483Swollman * $PIR in the BIOS segment contains a PIR_table 16297109Sru * int 1a:b106 returns PIR_table in buffer at es:(e)di 16367662Snik * int 1a:b18e returns PIR_table in buffer at es:(e)di 1645483Swollman * int 1a:b406 returns es:di pointing to the BIOS PIR_table 1655483Swollman */ 1665483Swollmanstruct PIR_header 1675483Swollman{ 16897109Sru int8_t ph_signature[4]; 16967662Snik u_int16_t ph_version; 1705483Swollman u_int16_t ph_length; 1715483Swollman u_int8_t ph_router_bus; 1725483Swollman u_int8_t ph_router_dev_fn; 1735483Swollman u_int16_t ph_pci_irqs; 1745483Swollman u_int16_t ph_router_vendor; 17597109Sru u_int16_t ph_router_device; 17667662Snik u_int32_t ph_miniport; 1775483Swollman u_int8_t ph_res[11]; 1785483Swollman u_int8_t ph_checksum; 1795483Swollman} __packed; 1805483Swollman 1815483Swollmanstruct PIR_intpin 18267662Snik{ 1835483Swollman u_int8_t link; 1845483Swollman u_int16_t irqs; 18567662Snik} __packed; 18667662Snik 18767662Snikstruct PIR_entry 18867662Snik{ 1895483Swollman u_int8_t pe_bus; 1905483Swollman u_int8_t pe_res1:3; 1915483Swollman u_int8_t pe_device:5; 1925483Swollman struct PIR_intpin pe_intpin[4]; 1935483Swollman u_int8_t pe_slot; 1945483Swollman u_int8_t pe_res3; 1955483Swollman} __packed; 1965483Swollman 19767662Snikstruct PIR_table 19867662Snik{ 19967662Snik struct PIR_header pt_header; 20067662Snik struct PIR_entry pt_entry[0]; 2015483Swollman} __packed; 2025483Swollman 2035483Swollman/* 20467662Snik * Int 15:E820 'SMAP' structure 2055483Swollman */ 2065483Swollman#define SMAP_SIG 0x534D4150 /* 'SMAP' */ 20767662Snik 20867662Snik#define SMAP_TYPE_MEMORY 1 20967662Snik#define SMAP_TYPE_RESERVED 2 21067662Snik#define SMAP_TYPE_ACPI_RECLAIM 3 2115483Swollman#define SMAP_TYPE_ACPI_NVS 4 2125483Swollman#define SMAP_TYPE_ACPI_ERROR 5 2135483Swollman 21467662Snik#define SMAP_XATTR_ENABLED 0x00000001 2155483Swollman#define SMAP_XATTR_NON_VOLATILE 0x00000002 2165483Swollman#define SMAP_XATTR_MASK (SMAP_XATTR_ENABLED | SMAP_XATTR_NON_VOLATILE) 21767662Snik 21867662Snikstruct bios_smap { 21967662Snik u_int64_t base; 22067662Snik u_int64_t length; 2215483Swollman u_int32_t type; 2225483Swollman} __packed; 22367662Snik 2245483Swollman/* Structure extended to include extended attribute field in ACPI 3.0. */ 2255483Swollmanstruct bios_smap_xattr { 22667662Snik u_int64_t base; 22767662Snik u_int64_t length; 22867662Snik u_int32_t type; 22967662Snik u_int32_t xattr; 2305483Swollman} __packed; 2315483Swollman 2325483Swollman/* 23367662Snik * System Management BIOS 2345483Swollman */ 2355483Swollman#define SMBIOS_START 0xf0000 23667662Snik#define SMBIOS_STEP 0x10 23767662Snik#define SMBIOS_OFF 0 23867662Snik#define SMBIOS_LEN 4 23967662Snik#define SMBIOS_SIG "_SM_" 2405483Swollman 2415483Swollmanstruct smbios_eps { 2425483Swollman uint8_t anchor_string[4]; /* '_SM_' */ 24367662Snik uint8_t checksum; 2445483Swollman uint8_t length; 2455483Swollman uint8_t major_version; 24667662Snik uint8_t minor_version; 24767662Snik uint16_t maximum_structure_size; 24867662Snik uint8_t entry_point_revision; 24967662Snik uint8_t formatted_area[5]; 2505483Swollman uint8_t intermediate_anchor_string[5]; /* '_DMI_' */ 2515483Swollman uint8_t intermediate_checksum; 25267662Snik uint16_t structure_table_length; 2535483Swollman uint32_t structure_table_address; 2545483Swollman uint16_t number_structures; 25567662Snik uint8_t BCD_revision; 25667662Snik}; 25767662Snik 25867662Snikstruct smbios_structure_header { 2595483Swollman uint8_t type; 2605483Swollman uint8_t length; 2615483Swollman uint16_t handle; 26267662Snik}; 2635483Swollman 2645483Swollman#ifdef _KERNEL 26567662Snik#define BIOS_PADDRTOVADDR(x) ((x) + KERNBASE) 26667662Snik#define BIOS_VADDRTOPADDR(x) ((x) - KERNBASE) 26767662Snik 26867662Snikstruct bios_oem_signature { 2695483Swollman char * anchor; /* search anchor string in BIOS memory */ 2705483Swollman size_t offset; /* offset from anchor (may be negative) */ 2715483Swollman size_t totlen; /* total length of BIOS string to copy */ 2725483Swollman} __packed; 27367662Snik 27423384Swoschstruct bios_oem_range { 27523384Swosch u_int from; /* shouldn't be below 0xe0000 */ 27667662Snik u_int to; /* shouldn't be above 0xfffff */ 27767662Snik} __packed; 27867662Snik 27967662Snikstruct bios_oem { 28023384Swosch struct bios_oem_range range; 28123384Swosch struct bios_oem_signature signature[]; 28223384Swosch} __packed; 28323384Swosch 28423384Swoschstruct segment_info { 28523384Swosch u_int base; 286 u_int limit; 287}; 288 289#define BIOSCODE_FLAG 0x01 290#define BIOSDATA_FLAG 0x02 291#define BIOSUTIL_FLAG 0x04 292#define BIOSARGS_FLAG 0x08 293 294struct bios_segments { 295 struct segment_info code32; /* 32-bit code (mandatory) */ 296 struct segment_info code16; /* 16-bit code */ 297 struct segment_info data; /* 16-bit data */ 298 struct segment_info util; /* 16-bit utility */ 299 struct segment_info args; /* 16-bit args */ 300}; 301 302struct bios_regs { 303 u_int eax; 304 u_int ebx; 305 u_int ecx; 306 u_int edx; 307 u_int esi; 308 u_int edi; 309}; 310 311struct bios_args { 312 u_int entry; /* entry point of routine */ 313 struct bios_regs r; 314 struct bios_segments seg; 315}; 316 317/* 318 * BIOS32 Service Directory entry. Caller supplies name, bios32_SDlookup 319 * fills in the rest of the details. 320 */ 321struct bios32_SDentry 322{ 323 union 324 { 325 u_int8_t name[4]; /* service identifier */ 326 u_int32_t id; /* as a 32-bit value */ 327 } ident; 328 u_int32_t base; /* base of service */ 329 u_int32_t len; /* service length */ 330 u_int32_t entry; /* entrypoint offset from base */ 331 vm_offset_t ventry; /* entrypoint in kernel virtual segment */ 332}; 333 334/* 335 * Exported lookup results 336 */ 337extern struct bios32_SDentry PCIbios; 338 339int bios_oem_strings(struct bios_oem *oem, u_char *buffer, size_t maxlen); 340uint32_t bios_sigsearch(uint32_t start, u_char *sig, int siglen, int paralen, 341 int sigofs); 342int bios16(struct bios_args *, char *, ...); 343int bios16_call(struct bios_regs *, char *); 344int bios32(struct bios_regs *, u_int, u_short); 345int bios32_SDlookup(struct bios32_SDentry *ent); 346void set_bios_selectors(struct bios_segments *, int); 347 348#endif 349 350#endif /* _MACHINE_PC_BIOS_H_ */ 351