NetBSD-5.0.2/sys/arch/arc/arc/autoconf.c
/* $NetBSD: autoconf.c,v 1.32 2007/12/03 15:33:12 ad Exp $ */
/* $OpenBSD: autoconf.c,v 1.9 1997/05/18 13:45:20 pefo Exp $ */
/*
* Copyright (c) 1992, 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 and Ralph Campbell.
*
* 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 1.31 91/01/21
*
* from: @(#)autoconf.c 8.1 (Berkeley) 6/10/93
*/
/*
* Copyright (c) 1996 Per Fogelstrom
* 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 and Ralph Campbell.
*
* 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 1.31 91/01/21
*
* from: @(#)autoconf.c 8.1 (Berkeley) 6/10/93
*/
/*
* 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 1.32 2007/12/03 15:33:12 ad Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/disklabel.h>
#include <sys/conf.h>
#include <sys/reboot.h>
#include <sys/device.h>
#include <machine/cpu.h>
#include <machine/autoconf.h>
#include <dev/scsipi/scsi_all.h>
#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/scsiconf.h>
#include <arc/arc/timervar.h>
struct bootdev_data {
const char *dev_type;
int bus;
int unit;
int partition;
};
static int getpno(const char **, int *);
/*
* The following several variables are related to
* the configuration process, and are used in initializing
* the machine.
*/
struct bootdev_data *bootdev_data;
/*
* Configure all devices found that we know about.
* This is done at boot time.
*/
void
cpu_configure(void)
{
#ifdef ENABLE_INT5_STATCLOCK
evcnt_attach_static(&statclock_ev);
#endif
(void)splhigh(); /* To be really sure.. */
if (config_rootfound("mainbus", NULL) == NULL)
panic("no mainbus found");
/* Configuration is finished, turn on interrupts. */
#ifdef ENABLE_INT5_STATCLOCK
/*
* Enable interrupt sources.
* We can't enable CPU INT5 which is used by statclock(9) here
* until cpu_initclocks(9) is called because there is no way
* to disable it other than setting status register by spl(9).
*/
_spllower(MIPS_INT_MASK_5);
#else
/* enable all source forcing SOFT_INTs cleared */
_splnone();
#endif
}
#if defined(NFS_BOOT_BOOTP) || defined(NFS_BOOT_DHCP)
int nfs_boot_rfc951 = 1;
#endif
void
cpu_rootconf(void)
{
printf("boot device: %s\n",
booted_device ? booted_device->dv_xname : "<unknown>");
setroot(booted_device, booted_device ? bootdev_data->partition : 0);
}
struct devmap {
const char *attachment;
const char *dev;
};
/*
* Look at the string 'cp' and decode the boot device.
* Boot names look like: scsi()disk(n)rdisk()partition(1)\bsd
* (beware for empty scsi id's...)
*/
void
makebootdev(const char *cp)
{
int ok, junk;
static struct devmap devmap[] = {
{ "multi", "fd" },
{ "eisa", "wd" },
{ "scsi", "sd" },
{ NULL, NULL }
};
struct devmap *dp = &devmap[0];
static struct bootdev_data bd;
/* "scsi()" */
while (dp->attachment) {
if (strncmp(cp, dp->attachment, strlen(dp->attachment)) == 0)
break;
dp++;
}
if (!dp->attachment) {
printf("Warning: boot device unrecognized: %s\n", cp);
return;
}
bd.dev_type = dp->dev;
ok = getpno(&cp, &bd.bus);
/* "multi(2)scsi(0)disk(0)rdisk(0)partition(1)" case */
if (ok && strcmp(dp->attachment, "multi") == 0 &&
memcmp(cp, "scsi", 4) == 0) {
bd.dev_type = "sd";
ok = getpno(&cp, &bd.bus);
}
/* "disk(N)" */
if (ok)
ok = getpno(&cp, &bd.unit);
else
bd.unit = 0;
/* "rdisk()" */
if (*cp++ == ')')
ok = getpno(&cp, &junk);
/* "partition(1)" */
#if 0 /* ignore partition number */
if (ok && getpno(&cp, &bd.partition))
--bd.partition;
else
#endif
bd.partition = 0;
bootdev_data = &bd;
}
static int
getpno(const char **cp, int *np)
{
int val = 0;
const char *s = *cp;
int got = 0;
*np = 0;
while (*s && *s != '(')
s++;
if (*s == '(') {
for (s++; *s; s++) {
if (*s == ')') {
s++;
got = 1;
*np = val;
break;
}
val = val * 10 + *s - '0';
}
}
*cp = s;
return (got);
}
/*
* Attempt to find the device from which we were booted.
*/
void
device_register(struct device *dev, void *aux)
{
struct bootdev_data *b = bootdev_data;
struct device *parent = device_parent(dev);
static int found = 0, initted = 0, scsiboot = 0;
static struct device *scsibusdev = NULL;
if (b == NULL)
return; /* There is no hope. */
if (found)
return;
if (!initted) {
if (strcmp(b->dev_type, "sd") == 0)
scsiboot = 1;
initted = 1;
}
if (scsiboot && device_is_a(dev, "scsibus")) {
/* XXX device_unit() abuse */
if (device_unit(dev) == b->bus) {
scsibusdev = dev;
#if 0
printf("\nscsibus = %s\n", dev->dv_xname);
#endif
}
return;
}
if (!device_is_a(dev, b->dev_type))
return;
if (device_is_a(dev, "sd")) {
struct scsipibus_attach_args *sa = aux;
if (scsiboot && scsibusdev && parent == scsibusdev &&
sa->sa_periph->periph_target == b->unit) {
booted_device = dev;
#if 0
printf("\nbooted_device = %s\n", dev->dv_xname);
#endif
found = 1;
}
return;
}
/* XXX device_unit() abuse */
if (device_unit(dev) == b->unit) {
booted_device = dev;
#if 0
printf("\nbooted_device = %s\n", dev->dv_xname);
#endif
found = 1;
}
}