NetBSD-5.0.2/sys/arch/next68k/next68k/autoconf.c
/* $NetBSD: autoconf.c,v 1.23 2008/02/14 00:04:51 joerg Exp $ */
/*
* Copyright (c) 1982, 1986, 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* 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. 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.
*
* from: Utah $Hdr: autoconf.c 1.36 92/12/20$
*
* @(#)autoconf.c 8.2 (Berkeley) 1/12/94
*/
/*
* Copyright (c) 1988 University of Utah.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* 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.
*
* from: Utah $Hdr: autoconf.c 1.36 92/12/20$
*
* @(#)autoconf.c 8.2 (Berkeley) 1/12/94
*/
/*
* Setup the system to run on the current machine.
*
* Configure() is called at boot time. Available
* devices are determined (from possibilities mentioned in ioconf.c),
* and the drivers are initialized.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.23 2008/02/14 00:04:51 joerg Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/conf.h>
#include <sys/reboot.h>
#include <sys/device.h>
#include <machine/vmparam.h>
#include <machine/autoconf.h>
#include <machine/disklabel.h>
#include <machine/cpu.h>
#include <machine/pte.h>
#include <next68k/next68k/isr.h>
#include <next68k/next68k/nextrom.h>
#include <next68k/dev/intiovar.h>
volatile u_long *intrstat;
volatile u_long *intrmask;
static struct device *getdevunit(const char *, int);
static int devidentparse(const char *, int *, int *, int *);
static int atoi(const char *);
struct device_equiv {
const char *alias;
const char *real;
};
static struct device_equiv device_equiv[] = {
{ "en", "xe" },
{ "tp", "xe" },
};
static int ndevice_equivs = (sizeof(device_equiv)/sizeof(device_equiv[0]));
/*
* Determine mass storage and memory configuration for a machine.
*/
void
cpu_configure(void)
{
/* int dma_rev; */
extern u_int rom_intrmask;
extern u_int rom_intrstat;
booted_device = NULL; /* set by device drivers (if found) */
#if 0
dma_rev = ((volatile u_char *)IIOV(NEXT_P_SCR1))[1];
switch (dma_rev) {
case 0:
intrmask = (volatile u_long *)IIOV(NEXT_P_INTRMASK_0);
intrstat = (volatile u_long *)IIOV(NEXT_P_INTRSTAT_0);
/* dspreg = (volatile u_long *)IIOV(0x2007000); */
break;
case 1:
intrmask = (volatile u_long *)IIOV(NEXT_P_INTRMASK);
intrstat = (volatile u_long *)IIOV(NEXT_P_INTRSTAT);
/* dspreg = (volatile u_long *)IIOV(0x2108000); */
break;
default:
panic("unknown DMA chip revision");
}
#else
intrmask = (volatile u_long *)IIOV(rom_intrmask);
intrstat = (volatile u_long *)IIOV(rom_intrstat);
printf ("intrmask: %p\n", intrmask);
printf ("intrstat: %p\n", intrstat);
#endif
INTR_SETMASK(0);
if (config_rootfound("mainbus", NULL) == NULL)
panic("autoconfig failed, no root");
/* Turn on interrupts */
spl0();
}
void
cpu_rootconf(void)
{
int count, lun, part;
count = lun = part = 0;
devidentparse (rom_boot_info, &count, &lun, &part);
booted_device = getdevunit (rom_boot_dev, count);
printf("boot device: %s\n",
(booted_device) ? booted_device->dv_xname : "<unknown>");
setroot(booted_device, part);
}
/*
* find a device matching "name" and unit number
*/
static struct device *
getdevunit(const char *name, int unit)
{
int i;
for (i = 0; i < ndevice_equivs; i++)
if (device_equiv->alias && strcmp (name, device_equiv->alias) == 0)
name = device_equiv->real;
return device_find_by_driver_unit(name, unit);
}
/*
* Parse a device ident.
*
* Format:
* (count, lun, part)
*/
static int
devidentparse(const char *spec, int *count, int *lun, int *part)
{
int i;
const char *args[3];
if (*spec == '(') {
/* tokenize device ident */
args[0] = ++spec;
for (i = 1; *spec && *spec != ')' && i<3; spec++) {
if (*spec == ',')
args[i++] = ++spec;
}
if (*spec != ')')
goto baddev;
switch(i) {
case 3:
*count = atoi(args[0]);
*lun = atoi(args[1]);
*part = atoi(args[2]);
break;
case 2:
*lun = atoi(args[0]);
*part = atoi(args[1]);
break;
case 1:
*part = atoi(args[0]);
break;
case 0:
break;
}
}
else
goto baddev;
return 0;
baddev:
return ENXIO;
}
static int
atoi(const char *s)
{
int val = 0;
while(isdigit(*s))
val = val * 10 + (*s++ - '0');
return val;
}