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/* $OpenBSD: diskprobe.c,v 1.3 1997/10/22 23:34:38 mickey 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 <sys/disklabel.h>
#include <stand/boot/bootarg.h>
#include <machine/biosvar.h>
#include "biosdev.h"
#include "libsa.h"
/* These get passed to kernel */
bios_diskinfo_t bios_diskinfo[16];
#if notyet
/* Checksum given buffer */
static u_int32_t
bufsum(buf, len)
void *buf;
int len;
{
u_int32_t sum = 0;
u_int8_t *p = buf;
while(len--){
sum += p[len];
}
return(sum);
}
/* Checksum given drive until different */
void
disksum(pos)
int pos;
{
u_int32_t sum;
int len, i;
}
#endif
/* Probe for all BIOS disks */
void
diskprobe()
{
u_int drive, i = 0, rv;
struct disklabel label;
u_int unit, type;
printf("Probing disks:");
/* Floppies */
for(drive = 0; drive < 4; drive++) {
rv = bios_getinfo(drive, &bios_diskinfo[i]);
if( (rv & 0x00FF)) continue;
if(!(rv & 0xFF00)) continue;
printf(" fd%u", drive);
/* Fill out best we can - (fd?) */
bios_diskinfo[i].bsd_dev = MAKEBOOTDEV(2, 0, 0, drive, 0);
#if 0
disksum(&bios_diskinfo[i]);
#endif
i++;
}
/* Hard disks */
for(drive = 0x80; drive < 0x88; drive++) {
rv = bios_getinfo(drive, &bios_diskinfo[i]);
if( (rv & 0x00FF)) continue;
if(!(rv & 0xFF00)) continue;
unit = drive - 0x80;
printf(" hd%u%s", unit, (bios_diskinfo[i].bios_edd > 0?"+":""));
/* Try to find the label, to figure out device type */
if((bios_getdisklabel(drive, &label)) ) {
printf("*");
type = 0; /* XXX let it be IDE */
} else {
/* Best guess */
if (label.d_type == DTYPE_SCSI)
type = 4;
else
type = 0;
}
/* Fill out best we can */
bios_diskinfo[i].bsd_dev = MAKEBOOTDEV(type, 0, 0, unit, 0);
#if 0
disksum(&bios_diskinfo[i]);
#endif
i++;
}
/* End of list */
bios_diskinfo[i].bios_number = -1;
addbootarg(BOOTARG_DISKINFO,
(i + 1) * sizeof(bios_diskinfo[0]), bios_diskinfo);
printf("\n");
}
/* Find info on given BIOS disk */
bios_diskinfo_t *
bios_dklookup(dev)
register int dev;
{
register 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);
}
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