biosvar.h revision 1.13
1/* $OpenBSD: biosvar.h,v 1.13 1997/09/29 03:42:28 mickey Exp $ */ 2 3/* 4 * Copyright (c) 1997 Michael Shalayeff 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Michael Shalayeff. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 */ 34 35#ifndef _I386_BIOSVAR_H_ 36#define _I386_BIOSVAR_H_ 37 38#define BOOT_APIVER 0x00000001 39 40#define BIOSNHEADS(d) (((d)>>24)+1) 41#define BIOSNSECTS(d) ((d)&0x3f) /* sectors are 1-based */ 42#define BIOSNDRIVES(d) ((((d)>>16)&0x0f)+1) 43#define BIOSNTRACKS(d) (( (((d)>>8)&0xff) | (((d)&0xc0)<<2) ) +1) 44 45/* BIOS media ID */ 46#define BIOSM_F320K 0xff /* floppy ds/sd 8 spt */ 47#define BIOSM_F160K 0xfe /* floppy ss/sd 8 spt */ 48#define BIOSM_F360K 0xfd /* floppy ds/sd 9 spt */ 49#define BIOSM_F180K 0xfc /* floppy ss/sd 9 spt */ 50#define BIOSM_ROMD 0xfa /* ROM disk */ 51#define BIOSM_F120M 0xf9 /* floppy ds/hd 15 spt 5.25" */ 52#define BIOSM_F720K 0xf9 /* floppy ds/dd 9 spt 3.50" */ 53#define BIOSM_HD 0xf8 /* hard drive */ 54#define BIOSM_F144K 0xf0 /* floppy ds/hd 18 spt 3.50" */ 55#define BIOSM_OTHER 0xf0 /* any other */ 56 57/* 58 * CTL_BIOS definitions. 59 */ 60#define BIOS_DEV 1 /* int: BIOS boot device */ 61#define BIOS_GEOMETRY 2 /* int: BIOS boot device geometry */ 62#define BIOS_CNVMEM 3 /* int: amount of conventional memory */ 63#define BIOS_EXTMEM 4 /* int: amount of extended memory */ 64#define BIOS_MAXID 5 /* number of valid machdep ids */ 65 66#define CTL_BIOS_NAMES { \ 67 { 0, 0 }, \ 68 { "biosdev", CTLTYPE_INT }, \ 69 { "biosgeo", CTLTYPE_INT }, \ 70 { "cnvmem", CTLTYPE_INT }, \ 71 { "extmem", CTLTYPE_INT }, \ 72} 73 74#if defined(_KERNEL) || defined (_STANDALONE) 75 76#ifdef _LOCORE 77#define DOINT(n) int $0x20+(n) 78#else 79#define DOINT(n) "int $0x20+(" #n ")" 80 81extern struct BIOS_vars { 82 /* XXX filled in assumption that last file opened is kernel */ 83 int bios_dev; 84 int bios_geometry; 85 86 u_int bios_apm_detail; 87 u_int bios_apm_code32_base; 88 u_int bios_apm_code16_base; 89 u_int bios_apm_code_len; 90 u_int bios_apm_data_base; 91 u_int bios_apm_data_len; 92 u_int bios_apm_entry; 93 94} BIOS_vars; 95 96extern struct BIOS_regs { 97 u_int32_t biosr_ax; 98 u_int32_t biosr_cx; 99 u_int32_t biosr_dx; 100 u_int32_t biosr_bx; 101 u_int32_t biosr_bp; 102 u_int32_t biosr_si; 103 u_int32_t biosr_di; 104 u_int32_t biosr_ds; 105 u_int32_t biosr_es; 106} BIOS_regs; 107 108struct EDD_CB { 109 u_int8_t edd_len; /* size of packet */ 110 u_int8_t edd_res; /* reserved */ 111 u_int16_t edd_nblk; /* # of blocks to transfer */ 112 u_int32_t edd_buf; /* address of buffer */ 113 u_int64_t edd_daddr; /* starting block */ 114}; 115 116#ifdef _KERNEL 117#include <machine/bus.h> 118 119struct bios_attach_args { 120 char *bios_dev; 121 union { 122 struct { 123 bus_space_tag_t _bios_iot; 124 bus_space_tag_t _bios_memt; 125 } bios; 126 struct { 127 u_int _apm_detail; 128 u_int _apm_code32_base; 129 u_int _apm_code16_base; 130 u_int _apm_code_len; 131 u_int _apm_data_base; 132 u_int _apm_data_len; 133 u_int _apm_entry; 134 } apm; 135 } _; 136}; 137 138#define bios_iot _.bios._bios_iot 139#define bios_memt _.bios._bios_memt 140#define apm_detail _.apm._apm_detail 141#define apm_code32_base _.apm._apm_code32_base 142#define apm_code16_base _.apm._apm_code16_base 143#define apm_code_len _.apm._apm_code_len 144#define apm_data_base _.apm._apm_data_base 145#define apm_data_len _.apm._apm_data_len 146#define apm_entry _.apm._apm_entry 147 148struct consdev; 149struct proc; 150 151int bios_sysctl 152 __P((int *, u_int, void *, size_t *, void *, size_t, struct proc *)); 153 154void bioscnprobe __P((struct consdev *)); 155void bioscninit __P((struct consdev *)); 156void bioscnputc __P((dev_t, int)); 157int bioscngetc __P((dev_t)); 158void bioscnpollc __P((dev_t, int)); 159 160#endif /* _KERNEL */ 161#endif /* _LOCORE */ 162#endif /* _KERNEL || _STANDALONE */ 163 164#endif /* _I386_BIOSVAR_H_ */ 165