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/* $OpenBSD: biosvar.h,v 1.20 1997/10/20 14:47:41 mickey Exp $ */
/*
* Copyright (c) 1997 Michael Shalayeff
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Michael Shalayeff.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#ifndef _I386_BIOSVAR_H_
#define _I386_BIOSVAR_H_
#define BOOT_APIVER 0x00000001
#define BIOSNHEADS(d) (((d)>>24)+1)
#define BIOSNSECTS(d) ((d)&0x3f) /* sectors are 1-based */
#define BIOSNDRIVES(d) ((((d)>>16)&0x0f)+1)
#define BIOSNTRACKS(d) (( (((d)>>8)&0xff) | (((d)&0xc0)<<2) ) +1)
/* BIOS media ID */
#define BIOSM_F320K 0xff /* floppy ds/sd 8 spt */
#define BIOSM_F160K 0xfe /* floppy ss/sd 8 spt */
#define BIOSM_F360K 0xfd /* floppy ds/sd 9 spt */
#define BIOSM_F180K 0xfc /* floppy ss/sd 9 spt */
#define BIOSM_ROMD 0xfa /* ROM disk */
#define BIOSM_F120M 0xf9 /* floppy ds/hd 15 spt 5.25" */
#define BIOSM_F720K 0xf9 /* floppy ds/dd 9 spt 3.50" */
#define BIOSM_HD 0xf8 /* hard drive */
#define BIOSM_F144K 0xf0 /* floppy ds/hd 18 spt 3.50" */
#define BIOSM_OTHER 0xf0 /* any other */
/*
* BIOS memory maps
*/
#define BIOS_MAP_END 0x00 /* End of array XXX - special */
#define BIOS_MAP_FREE 0x01 /* Usable memory */
#define BIOS_MAP_RES 0x02 /* Reseved memory */
#define BIOS_MAP_ACPI 0x03 /* ACPI Reclaim memory */
#define BIOS_MAP_NVS 0x04 /* ACPI NVS memory */
/*
* CTL_BIOS definitions.
*/
#define BIOS_DEV 1 /* int: BIOS boot device */
#define BIOS_GEOMETRY 2 /* int: BIOS boot device geometry */
#define BIOS_CNVMEM 3 /* int: amount of conventional memory */
#define BIOS_EXTMEM 4 /* int: amount of extended memory */
#define BIOS_MAXID 5 /* number of valid machdep ids */
#define CTL_BIOS_NAMES { \
{ 0, 0 }, \
{ "biosdev", CTLTYPE_INT }, \
{ "biosgeo", CTLTYPE_INT }, \
{ "cnvmem", CTLTYPE_INT }, \
{ "extmem", CTLTYPE_INT }, \
}
#if defined(_KERNEL) || defined (_STANDALONE)
#ifdef _LOCORE
#define DOINT(n) int $0x20+(n)
#else
#define DOINT(n) "int $0x20+(" #n ")"
extern struct BIOS_vars {
/* XXX filled in assumption that last file opened is kernel */
int bios_dev;
u_int bios_geometry;
/* APM_CONNECT returned values */
u_int bios_apm_detail;
u_int bios_apm_code32_base;
u_int bios_apm_code16_base;
u_int bios_apm_code_len;
u_int bios_apm_data_base;
u_int bios_apm_data_len;
u_int bios_apm_entry;
void *boot_data;
} BIOS_vars;
extern struct BIOS_regs {
u_int32_t biosr_ax;
u_int32_t biosr_cx;
u_int32_t biosr_dx;
u_int32_t biosr_bx;
u_int32_t biosr_bp;
u_int32_t biosr_si;
u_int32_t biosr_di;
u_int32_t biosr_ds;
u_int32_t biosr_es;
} BIOS_regs;
struct EDD_CB {
u_int8_t edd_len; /* size of packet */
u_int8_t edd_res; /* reserved */
u_int16_t edd_nblk; /* # of blocks to transfer */
u_int32_t edd_buf; /* address of buffer */
u_int64_t edd_daddr; /* starting block */
};
typedef struct _bios_memmap {
u_int64_t addr; /* Beginning of block */
u_int64_t size; /* Size of block */
u_int32_t type; /* Type of block */
} bios_memmap_t;
/* Info about disk from the bios, plus the mapping from
* BIOS numbers to BSD major (driver?) number.
*
* Also, do not bother with BIOSN*() macros, just parcel
* the info out, and use it like this. This makes for less
* of a dependance on BIOSN*() macros having to be the same
* across /boot, /bsd, and userland.
*/
typedef struct _bios_diskinfo {
/* BIOS section */
signed int bios_number; /* BIOS number of drive (or -1) */
unsigned int bios_cylinders; /* BIOS cylinders */
unsigned int bios_heads; /* BIOS heads */
unsigned int bios_sectors; /* BIOS sectors */
/* BSD section */
dev_t bsd_dev; /* BSD device */
/* Checksum section */
u_int32_t checksum; /* Checksum for drive */
unsigned int checklen; /* Number of sectors done */
} bios_diskinfo_t;
#ifdef _KERNEL
#include <machine/bus.h>
struct bios_attach_args {
char *bios_dev;
union {
struct {
bus_space_tag_t _bios_iot;
bus_space_tag_t _bios_memt;
} bios;
struct {
u_int _apm_detail;
u_int _apm_code32_base;
u_int _apm_code16_base;
u_int _apm_code_len;
u_int _apm_data_base;
u_int _apm_data_len;
u_int _apm_entry;
} apm;
} _;
};
#define bios_iot _.bios._bios_iot
#define bios_memt _.bios._bios_memt
#define apm_detail _.apm._apm_detail
#define apm_code32_base _.apm._apm_code32_base
#define apm_code16_base _.apm._apm_code16_base
#define apm_code_len _.apm._apm_code_len
#define apm_data_base _.apm._apm_data_base
#define apm_data_len _.apm._apm_data_len
#define apm_entry _.apm._apm_entry
struct consdev;
struct proc;
int bios_sysctl
__P((int *, u_int, void *, size_t *, void *, size_t, struct proc *));
void bioscnprobe __P((struct consdev *));
void bioscninit __P((struct consdev *));
void bioscnputc __P((dev_t, int));
int bioscngetc __P((dev_t));
void bioscnpollc __P((dev_t, int));
#endif /* _KERNEL */
#endif /* _LOCORE */
#endif /* _KERNEL || _STANDALONE */
#endif /* _I386_BIOSVAR_H_ */
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