210 lines
6.5 KiB
C
210 lines
6.5 KiB
C
/*-
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* Copyright (c) 1997 Michael Smith
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* Copyright (c) 1998 Jonathan Lemon
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* Signature structure for the BIOS32 Service Directory header
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*/
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struct bios32_SDheader
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{
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u_int8_t sig[4];
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u_int32_t entry;
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u_int8_t revision;
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u_int8_t len;
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u_int8_t cksum;
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u_int8_t pad[5];
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};
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/*
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* BIOS32 Service Directory entry. Caller supplies name, bios32_SDlookup
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* fills in the rest of the details.
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*/
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struct bios32_SDentry
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{
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union
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{
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u_int8_t name[4]; /* service identifier */
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u_int32_t id; /* as a 32-bit value */
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} ident;
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u_int32_t base; /* base of service */
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u_int32_t len; /* service length */
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u_int32_t entry; /* entrypoint offset from base */
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};
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extern int bios32_SDlookup(struct bios32_SDentry *ent);
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extern u_int32_t bios_sigsearch(u_int32_t start, u_char *sig, int siglen,
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int paralen, int sigofs);
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#define BIOS_PADDRTOVADDR(x) (((x) - ISA_HOLE_START) + atdevbase)
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#define BIOS_VADDRTOPADDR(x) (((x) - atdevbase) + ISA_HOLE_START)
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/*
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* PnP BIOS presence structure
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*/
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struct PnPBIOS_table
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{
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u_int8_t sig[4]; /* "$PnP */
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u_int8_t version; /* should be 0x10 */
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u_int8_t len; /* total structure length */
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u_int16_t control; /* BIOS feature flags */
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u_int8_t cksum; /* checksum */
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u_int32_t evflagaddr; /* address of event notificaton flag */
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u_int16_t rmentryoffset; /* real-mode entry offset */
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u_int16_t rmentryseg; /* segment */
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u_int16_t pmentryoffset; /* protected-mode entry offset */
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u_int32_t pmentrybase; /* segment base */
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u_int32_t oemdevid; /* motherboard EISA ID */
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u_int16_t rmbiosseg; /* real-mode BIOS segment */
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u_int32_t pmdataseg; /* protected-mode data segment */
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} __attribute__ ((packed));
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/*
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* Exported lookup results
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*/
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extern struct bios32_SDentry PCIbios;
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extern struct PnPBIOS_table *PnPBIOStable;
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struct segment_info {
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u_int base;
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u_int limit;
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};
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#define BIOSCODE_FLAG 0x01
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#define BIOSDATA_FLAG 0x02
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#define BIOSUTIL_FLAG 0x04
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#define BIOSARGS_FLAG 0x08
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struct bios_segments {
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struct segment_info code32; /* 32-bit code (mandatory) */
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struct segment_info code16; /* 16-bit code */
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struct segment_info data; /* 16-bit data */
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struct segment_info util; /* 16-bit utility */
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struct segment_info args; /* 16-bit args */
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};
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struct bios_regs {
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u_int eax;
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u_int ebx;
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u_int ecx;
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u_int edx;
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u_int esi;
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u_int edi;
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};
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struct bios_args {
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u_int entry; /* entry point of routine */
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struct bios_regs r;
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struct bios_segments seg;
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};
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/*
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* PnP BIOS return codes
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*/
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#define PNP_SUCCESS 0x00
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#define PNP_NOT_SET_STATICALLY 0x7f
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#define PNP_UNKNOWN_FUNCTION 0x81
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#define PNP_FUNTION_NOT_SUPPORTED 0x82
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#define PNP_INVALID_HANDLE 0x83
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#define PNP_BAD_PARAMETER 0x84
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#define PNP_SET_FAILED 0x85
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#define PNP_EVENTS_NOT_PENDING 0x86
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#define PNP_SYSTEM_NOT_DOCKED 0x87
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#define PNP_NO_ISA_PNP_CARDS 0x88
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#define PNP_UNABLE_TO_DETERMINE_DOCK_CAPABILITIES 0x89
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#define PNP_CONFIG_CHANGE_FAILED_NO_BATTERY 0x8a
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#define PNP_CONFIG_CHANGE_FAILED_RESOURCE_CONFLICT 0x8b
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#define PNP_BUFFER_TOO_SMALL 0x8c
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#define PNP_USE_ESCD_SUPPORT 0x8d
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#define PNP_MESSAGE_NOT_SUPPORTED 0x8e
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#define PNP_HARDWARE_ERROR 0x8f
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/*
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* DMI return codes
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*/
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#define DMI_SUCCESS 0x00
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#define DMI_UNKNOWN_FUNCTION 0x81
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#define DMI_FUNCTION_NOT_SUPPORTED 0x82
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#define DMI_INVALID_HANDLE 0x83
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#define DMI_BAD_PARAMETER 0x84
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#define DMI_INVALID_SUBFUNCTION 0x85
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#define DMI_NO_CHANGE 0x86
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#define DMI_ADD_STRUCTURE_FAILED 0x87
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#define DMI_READ_ONLY 0x8d
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#define DMI_LOCK_NOT_SUPPORTED 0x90
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#define DMI_CURRENTLY_LOCKED 0x91
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#define DMI_INVALID_LOCK 0x92
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/*
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* format specifiers and defines for bios16()
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* s = short (16 bits)
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* i = int (32 bits)
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* p = pointer (converted to seg:offset)
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* C,D,U = selector (corresponding to code/data/utility segment)
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*/
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#define PNP_COUNT_DEVNODES "sppD", 0x00
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#define PNP_GET_DEVNODE "sppsD", 0x01
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#define PNP_SET_DEVNODE "sppsD", 0x02
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#define PNP_GET_EVENT "spD", 0x03
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#define PNP_SEND_MSG "ssD", 0x04
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#define PNP_GET_DOCK_INFO "spD", 0x05
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#define PNP_SEL_PRIBOOT "ssiiisspD", 0x07
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#define PNP_GET_PRIBOOT "sspppppD", 0x08
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#define PNP_SET_RESINFO "spD", 0x09
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#define PNP_GET_RESINFO "spD", 0x0A
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#define PNP_GET_APM_ID "sppD", 0x0B
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#define PNP_GET_ISA_INFO "spD", 0x40
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#define PNP_GET_ECSD_INFO "spppD", 0x41
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#define PNP_READ_ESCD "spUD", 0x42
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#define PNP_WRITE_ESCD "spUD", 0x43
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#define PNP_GET_DMI_INFO "spppppD", 0x50
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#define PNP_GET_DMI_STRUCTURE "sppUD", 0x51
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#define PNP_SET_DMI_STRUCTURE "sppsUD" 0x52
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#define PNP_GET_DMI_CHANGE "spUD" 0x53
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#define PNP_DMI_CONTROL "sspsUD" 0x54
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#define PNP_GET_GPNV_INFO "sppppD" 0x55
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#define PNP_READ_GPNV_DATA "ssppUD" 0x56
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#define PNP_WRITE_GPNV_DATA "sspsUD" 0x57
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#define PNP_BOOT_CHECK "sp", 0x60
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#define PNP_COUNT_IPL "sppp", 0x61
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#define PNP_GET_BOOTPRI "spp", 0x62
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#define PNP_SET_BOOTPRI "sp", 0x63
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#define PNP_GET_LASTBOOT "sp", 0x64
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#define PNP_GET_BOOTFIRST "sp", 0x65
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#define PNP_SET_BOOTFIRST "sp", 0x66
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extern int bios16(struct bios_args *, char *, ...);
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extern int bios16_call(struct bios_regs *, char *);
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extern int bios32(struct bios_regs *, u_int, u_short);
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extern void set_bios_selectors(struct bios_segments *, int);
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