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/* $OpenBSD: autoconf.c,v 1.2 1996/12/28 06:21:36 rahnds Exp $ */
/* $NetBSD: autoconf.c,v 1.1 1996/09/30 16:34:39 ws Exp $ */
/*
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
* Copyright (C) 1995, 1996 TooLs GmbH.
* 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 TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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/conf.h>
#include <sys/device.h>
#include <sys/reboot.h>
#include <sys/systm.h>
#include <machine/powerpc.h>
extern int cold;
void configure __P((void));
void setroot __P((void));
void swapconf __P((void));
/*
* Determine device configuration for a machine.
*/
void
configure()
{
ofrootfound();
(void)spl0();
/*
* Setup root device.
* Configure swap area.
*/
setroot();
swapconf();
cold = 0;
}
/*
* Try to find the device we were booted from to set rootdev.
*/
void
setroot()
{
char *cp;
if (mountroot) {
/*
* rootdev/swdevt/mountroot etc. already setup by config.
*/
return;
}
/*
* Try to find the device where we were booted from.
*/
for (cp = bootpath + strlen(bootpath); --cp >= bootpath;) {
if (*cp == '/') {
*cp = '\0';
if (!dk_match(bootpath)) {
*cp = '/';
break;
}
*cp = '/';
}
}
if (cp < bootpath || boothowto & RB_ASKNAME) {
/* Insert -a processing here XXX */
panic("Cannot find root device");
}
dk_cleanup();
}
/*
* Configure swap space
*/
void
swapconf()
{
struct swdevt *swp;
int nblks;
for (swp = swdevt; swp->sw_dev != NODEV; swp++)
if (bdevsw[major(swp->sw_dev)].d_psize) {
nblks = (*bdevsw[major(swp->sw_dev)].d_psize)(swp->sw_dev);
if (nblks != -1
&& (swp->sw_nblks == 0 || swp->sw_nblks > nblks))
swp->sw_nblks = nblks;
swp->sw_nblks = ctod(dtoc(swp->sw_nblks));
}
dumpconf();
}
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