Source to i386/i386/swapgeneric.c
/*-
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* 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 the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 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.
*
* @(#)swapgeneric.c 8.1 (Berkeley) 6/16/93
*/
#include <machine/pte.h>
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/buf.h>
#include <sys/vm.h>
#include <sys/systm.h>
#include <sys/reboot.h>
/*
* Generic configuration; all in one
*/
dev_t rootdev = makedev(0,0);
dev_t dumpdev = makedev(0,1);
int nswap;
struct swdevt swdevt[] = {
{ 1, 0, 0 },
{ NODEV, 1, 0 },
};
long dumplo;
int dmmin, dmmax, dmtext;
extern struct driver wddriver;
struct genericconf {
caddr_t gc_driver;
char *gc_name;
dev_t gc_root;
} genericconf[] = {
{ (caddr_t)&wddriver, "wd", makedev(0, 0), },
{ 0 },
};
setconf()
{
#ifdef notdef
register struct genericconf *gc;
int unit, swaponroot = 0;
if (rootdev != NODEV)
goto doswap;
if (boothowto & RB_ASKNAME) {
char name[128];
retry:
printf("root device? ");
gets(name);
for (gc = genericconf; gc->gc_driver; gc++)
if (gc->gc_name[0] == name[0] &&
gc->gc_name[1] == name[1])
goto gotit;
goto bad;
gotit:
if (name[3] == '*') {
name[3] = name[4];
swaponroot++;
}
if (name[2] >= '0' && name[2] <= '7' && name[3] == 0) {
unit = name[2] - '0';
goto found;
}
printf("bad/missing unit number\n");
bad:
printf("use dk%%d\n");
goto retry;
}
unit = 0;
for (gc = genericconf; gc->gc_driver; gc++) {
for (ui = vbdinit; ui->ui_driver; ui++) {
if (ui->ui_alive == 0)
continue;
if (ui->ui_unit == 0 && ui->ui_driver ==
(struct vba_driver *)gc->gc_driver) {
printf("root on %s0\n",
ui->ui_driver->ud_dname);
goto found;
}
}
}
printf("no suitable root\n");
asm("halt");
found:
gc->gc_root = makedev(major(gc->gc_root), unit*8);
rootdev = gc->gc_root;
doswap:
swdevt[0].sw_dev = argdev = dumpdev =
makedev(major(rootdev), minor(rootdev)+1);
/* swap size and dumplo set during autoconfigure */
if (swaponroot)
rootdev = dumpdev;
#endif
}
gets(cp)
char *cp;
{
register char *lp;
register c;
lp = cp;
for (;;) {
printf("%c", c = cngetc()&0177);
switch (c) {
case '\n':
case '\r':
*lp++ = '\0';
return;
case '\b':
case '\177':
if (lp > cp) {
printf(" \b");
lp--;
}
continue;
case '#':
lp--;
if (lp < cp)
lp = cp;
continue;
case '@':
case 'u'&037:
lp = cp;
printf("%c", '\n');
continue;
default:
*lp++ = c;
}
}
}