147 lines
4.6 KiB
C
147 lines
4.6 KiB
C
|
/* $NetBSD: devopen.c,v 1.8 2010/12/24 20:40:42 jakllsch Exp $ */
|
||
|
|
|
||
|
|
/*-
|
||
|
|
* Copyright (c) 2005 The NetBSD Foundation, Inc.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
||
|
|
* by Bang Jun-Young.
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
||
|
|
* ``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 FOUNDATION 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Copyright (c) 1996, 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.
|
||
|
|
*
|
||
|
|
* 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 <lib/libsa/stand.h>
|
||
|
|
#include <lib/libkern/libkern.h>
|
||
|
|
|
||
|
|
#include <libi386.h>
|
||
|
|
#include <biosdisk.h>
|
||
|
|
#include "devopen.h"
|
||
|
|
#ifdef _STANDALONE
|
||
|
|
#include <bootinfo.h>
|
||
|
|
#endif
|
||
|
|
#ifdef SUPPORT_PS2
|
||
|
|
#include <biosmca.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static int dev2bios(char *, int, int *);
|
||
|
|
|
||
|
|
static int
|
||
|
|
dev2bios(char *devname, int unit, int *biosdev)
|
||
|
|
{
|
||
|
|
|
||
|
|
if (strcmp(devname, "hd") == 0)
|
||
|
|
*biosdev = 0x80 + unit;
|
||
|
|
else if (strcmp(devname, "fd") == 0)
|
||
|
|
*biosdev = 0x00 + unit;
|
||
|
|
else if (strcmp(devname, "cd") == 0)
|
||
|
|
*biosdev = boot_biosdev;
|
||
|
|
else
|
||
|
|
return ENXIO;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
bios2dev(int biosdev, daddr_t sector, char **devname, int *unit, int *partition)
|
||
|
|
{
|
||
|
|
|
||
|
|
/* set default */
|
||
|
|
*unit = biosdev & 0x7f;
|
||
|
|
|
||
|
|
if (biosdev & 0x80) {
|
||
|
|
/*
|
||
|
|
* There seems to be no standard way of numbering BIOS
|
||
|
|
* CD-ROM drives. The following method is a little tricky
|
||
|
|
* but works nicely.
|
||
|
|
*/
|
||
|
|
if (biosdev >= 0x80 + get_harddrives()) {
|
||
|
|
*devname = "cd";
|
||
|
|
*unit = 0; /* override default */
|
||
|
|
} else
|
||
|
|
*devname = "hd";
|
||
|
|
} else
|
||
|
|
*devname = "fd";
|
||
|
|
|
||
|
|
*partition = biosdisk_findpartition(biosdev, sector);
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef _STANDALONE
|
||
|
|
struct btinfo_bootpath bibp;
|
||
|
|
extern bool kernel_loaded;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Open the BIOS disk device
|
||
|
|
*/
|
||
|
|
int
|
||
|
|
devopen(struct open_file *f, const char *fname, char **file)
|
||
|
|
{
|
||
|
|
char *fsname, *devname;
|
||
|
|
int unit, partition;
|
||
|
|
int biosdev;
|
||
|
|
int error;
|
||
|
|
|
||
|
|
if ((error = parsebootfile(fname, &fsname, &devname,
|
||
|
|
&unit, &partition, (const char **) file))
|
||
|
|
|| (error = dev2bios(devname, unit, &biosdev)))
|
||
|
|
return error;
|
||
|
|
|
||
|
|
f->f_dev = &devsw[0]; /* must be biosdisk */
|
||
|
|
|
||
|
|
#ifdef _STANDALONE
|
||
|
|
if (!kernel_loaded) {
|
||
|
|
strncpy(bibp.bootpath, *file, sizeof(bibp.bootpath));
|
||
|
|
BI_ADD(&bibp, BTINFO_BOOTPATH, sizeof(bibp));
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
return biosdisk_open(f, biosdev, partition);
|
||
|
|
}
|