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/* $OpenBSD: diskprobe.c,v 1.2 1997/10/18 00:33:15 weingart Exp $ */
/*
* Copyright (c) 1997 Tobias Weingartner
* 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 Tobias Weingartner.
* 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.
*
*/
#include <sys/param.h>
#include <sys/reboot.h>
#include <machine/biosvar.h>
#include "biosdev.h"
#include "libsa.h"
extern struct BIOS_vars BIOS_vars;
/* These get passed to kernel */
bios_diskinfo_t bios_diskinfo[16];
/* Find info on given BIOS disk */
bios_diskinfo_t *
diskfind(dev)
int dev;
{
int i;
for(i = 0; bios_diskinfo[i].bios_number != -1; i++)
if(bios_diskinfo[i].bios_number == dev)
return(&bios_diskinfo[i]);
return(NULL);
}
/* Probe for all BIOS disks */
void
diskprobe()
{
int drive, i = 0;
printf("Probing disks:");
/* Floppies */
for(drive = 0; drive < 4; drive++){
u_int32_t p = biosdinfo(drive);
if(BIOSNSECTS(p) < 2) continue;
if(p){
u_int32_t t = biosdprobe(drive);
if(t & 0x00FF) continue;
if(!(t & 0xFF00)) continue;
printf(" fd%d", drive);
/* Fill out best we can */
bios_diskinfo[i].bsd_dev = MAKEBOOTDEV(2, 0, 0, 0, 0); /* fd? */
bios_diskinfo[i].bios_number = drive;
bios_diskinfo[i].bios_cylinders = BIOSNTRACKS(p);
bios_diskinfo[i].bios_heads = BIOSNHEADS(p);
bios_diskinfo[i].bios_sectors = BIOSNSECTS(p);
i++;
}
}
/* Hard disks */
for(drive = 0x80; drive < 0x88; drive++){
u_int32_t p = biosdinfo(drive);
if(BIOSNSECTS(p) < 2) continue;
if(p){
u_int32_t t = biosdprobe(drive);
if(t & 0x00FF) continue;
if(!(t & 0xFF00)) continue;
printf(" hd%d", drive - 128);
/* Fill out best we can */
bios_diskinfo[i].bsd_dev = -1; /* XXX - fill in */
bios_diskinfo[i].bios_number = drive;
bios_diskinfo[i].bios_cylinders = BIOSNTRACKS(p);
bios_diskinfo[i].bios_heads = BIOSNHEADS(p);
bios_diskinfo[i].bios_sectors = BIOSNSECTS(p);
i++;
}
}
/* End of list */
bios_diskinfo[i].bios_number = -1;
/* XXX - This needs a better place! */
BIOS_vars.boot_data = bios_diskinfo;
printf("\n");
}
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