81 lines
2.8 KiB
C
81 lines
2.8 KiB
C
/* $NetBSD: bootinfo_biosgeom.c,v 1.3 1999/01/28 20:22:31 christos Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1997
|
|
* Matthias Drochner. 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 for the NetBSD Project
|
|
* by Matthias Drochner.
|
|
* 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 AUTHOR 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/types.h>
|
|
#include <machine/disklabel.h>
|
|
|
|
#include <lib/libkern/libkern.h>
|
|
#include <lib/libsa/stand.h>
|
|
|
|
#include "libi386.h"
|
|
#include "biosdisk_ll.h"
|
|
#include "bootinfo.h"
|
|
|
|
void bi_getbiosgeom()
|
|
{
|
|
unsigned char nhd;
|
|
struct btinfo_biosgeom *bibg;
|
|
int i;
|
|
|
|
pvbcopy((void *)(0x400 + 0x75), &nhd, 1); /* from BIOS data area */
|
|
if(nhd == 0 || nhd > 4 /* ??? */ )
|
|
return;
|
|
|
|
bibg = alloc(sizeof(struct btinfo_biosgeom)
|
|
+ (nhd - 1) * sizeof(struct bi_biosgeom_entry));
|
|
if(!bibg) return;
|
|
|
|
bibg->num = nhd;
|
|
|
|
for(i = 0; i < nhd; i++) {
|
|
struct biosdisk_ll d;
|
|
char buf[BIOSDISK_SECSIZE];
|
|
|
|
d.dev = 0x80 + i;
|
|
set_geometry(&d);
|
|
bibg->disk[i].spc = d.spc;
|
|
bibg->disk[i].spt = d.spt;
|
|
|
|
bzero(bibg->disk[i].dosparts,
|
|
sizeof(bibg->disk[i].dosparts));
|
|
if(readsects(&d, 0, 1, buf, 0))
|
|
continue;
|
|
bcopy(&buf[MBR_PARTOFF], bibg->disk[i].dosparts,
|
|
sizeof(bibg->disk[i].dosparts));
|
|
}
|
|
|
|
BI_ADD(bibg, BTINFO_BIOSGEOM, sizeof(struct btinfo_biosgeom)
|
|
+ (nhd - 1) * sizeof(struct bi_biosgeom_entry));
|
|
}
|