sys/arch/i386/i386/autoconf.c
author skrll <skrll@NetBSD.org>
Mon, 05 Dec 2016 10:54:48 +0000
branchnick-nhusb
changeset 278624 e375aab2fc60
parent 224530 75d5da5d2e86
child 278713 e1ce05dcfb31
permissions -rw-r--r--
Sync with HEAD

/*	$NetBSD: autoconf.c,v 1.100.6.1 2016/12/05 10:54:53 skrll Exp $	*/

/*-
 * Copyright (c) 1990 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. 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.
 *
 *	@(#)autoconf.c	7.1 (Berkeley) 5/9/91
 */

/*
 * Setup the system to run on the current machine.
 *
 * Configure() is called at boot time and initializes the vba
 * device tables and the memory controller monitoring.  Available
 * devices are determined (from possibilities mentioned in ioconf.c),
 * and the drivers are initialized.
 *
 * Lots of this is now in x86/x86/x86_autoconf.c
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.100.6.1 2016/12/05 10:54:53 skrll Exp $");

#include "opt_compat_oldboot.h"
#include "opt_intrdebug.h"
#include "opt_multiprocessor.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/proc.h>
#include <sys/device.h>

#include <machine/pte.h>
#include <machine/cpu.h>
#include <machine/gdt.h>
#include <machine/intr.h>
#include <machine/pcb.h>
#include <machine/cpufunc.h>
#include <x86/fpu.h>

#include "ioapic.h"
#include "lapic.h"

#if NIOAPIC > 0
#include <machine/i82093var.h>
#endif

#if NLAPIC > 0
#include <machine/i82489reg.h>
#include <machine/i82489var.h>
#endif

#include "bios32.h"
#if NBIOS32 > 0
#include <machine/bios32.h>
/* XXX */
extern void platform_init(void);
#endif

#include "opt_pcibios.h"
#ifdef PCIBIOS
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <i386/pci/pcibios.h>
#endif

/*
 * Determine i/o configuration for a machine.
 */
void
cpu_configure(void)
{
	struct pcb *pcb;

	startrtclock();

#if NBIOS32 > 0
	bios32_init();
	platform_init();
#endif
#ifdef PCIBIOS
	pcibios_init();
#endif

	if (config_rootfound("mainbus", NULL) == NULL)
		panic("configure: mainbus not configured");

#ifdef INTRDEBUG
	intr_printconfig();
#endif

#if NIOAPIC > 0
	ioapic_enable();
#endif
	fpuinit(&cpu_info_primary);
	/* resync cr0 after FPU configuration */
	pcb = lwp_getpcb(&lwp0);
	pcb->pcb_cr0 = rcr0() & ~CR0_TS;
#ifdef MULTIPROCESSOR
	/* propagate this to the idle pcb's. */
	cpu_init_idle_lwps();
#endif

	spl0();
#if NLAPIC > 0
	i82489_writereg(LAPIC_TPRI, 0);
#endif
}