config root man

/*-
 * Copyright (c) 1998 Doug Rabson
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
 */

#include "opt_isa.h"

#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/powerpc/powerpc/autoconf.c 191450 2009-04-24 03:51:11Z marcel $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/cons.h>
#include <sys/kernel.h>

#include <machine/intr_machdep.h>

#ifdef DEV_ISA
extern void isa_probe_children(device_t dev);

device_t isa_bus_device;
#endif

static device_t nexusdev;

static void	configure_first(void *);
static void	configure(void *);
static void	configure_final(void *);

SYSINIT(configure1, SI_SUB_CONFIGURE, SI_ORDER_FIRST, configure_first, NULL);
/* SI_ORDER_SECOND is hookable */
SYSINIT(configure2, SI_SUB_CONFIGURE, SI_ORDER_THIRD, configure, NULL);
/* SI_ORDER_MIDDLE is hookable */
SYSINIT(configure3, SI_SUB_CONFIGURE, SI_ORDER_ANY, configure_final, NULL);

/*
 * Determine i/o configuration for a machine.
 */
static void
configure_first(void *dummy)
{

	nexusdev = device_add_child(root_bus, "nexus", 0);
}

static void
configure(void *dummy)
{

	root_bus_configure();
#ifdef DEV_ISA
	if (isa_bus_device)
		isa_probe_children(isa_bus_device);
#endif
}

static void
configure_final(void *dummy)
{

	/*
	 * Now that we're guaranteed to have a PIC driver (or we'll never
	 * have one), program it with all the previously setup interrupts.
	 */
	powerpc_enable_intr();

	/* Enable external interrupts. */
	mtmsr(mfmsr() | PSL_EE);

	cninit_finish();
	cold = 0;
}