100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
/* $NetBSD: autoconf.c,v 1.7 2000/06/06 18:00:13 soren Exp $ */
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/*
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* Copyright (c) 2000 Soren S. Jorvang. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/buf.h>
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#include <sys/conf.h>
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#include <sys/device.h>
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#include <machine/cpu.h>
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struct device *booted_device;
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int booted_partition;
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static void findroot(void);
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int cpuspeed = 100; /* Until we know more precisely. */
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void
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cpu_configure()
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{
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(void)splhigh();
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if (config_rootfound("mainbus", "mainbus") == NULL)
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panic("no mainbus found");
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_splnone();
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}
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void
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cpu_rootconf()
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{
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findroot();
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printf("boot device: %s\n",
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booted_device ? booted_device->dv_xname : "<unknown>");
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setroot(booted_device, booted_partition);
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}
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extern char bootstring[];
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extern int netboot;
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static void
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findroot(void)
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{
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struct device *dv;
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if (booted_device)
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return;
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if ((booted_device == NULL) && netboot == 0)
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for (dv = alldevs.tqh_first; dv != NULL;
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dv = dv->dv_list.tqe_next)
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if (dv->dv_class == DV_DISK &&
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!strcmp(dv->dv_cfdata->cf_driver->cd_name, "wd"))
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booted_device = dv;
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/*
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* XXX Match up MBR boot specification with BSD disklabel for root?
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*/
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booted_partition = 0;
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return;
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}
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void
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device_register(dev, aux)
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struct device *dev;
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void *aux;
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{
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if ((booted_device == NULL) && (netboot == 1))
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if (dev->dv_class == DV_IFNET)
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booted_device = dev;
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}
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