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      1 /*	$NetBSD: autoconf.c,v 1.30 2020/05/02 16:44:34 bouyer Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1990 The Regents of the University of California.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * William Jolitz.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  *
     34  *	@(#)autoconf.c	7.1 (Berkeley) 5/9/91
     35  */
     36 
     37 /*
     38  * Setup the system to run on the current machine.
     39  *
     40  * Configure() is called at boot time and initializes the vba
     41  * device tables and the memory controller monitoring.  Available
     42  * devices are determined (from possibilities mentioned in ioconf.c),
     43  * and the drivers are initialized.
     44  *
     45  * Lots of this is now in x86/x86/x86_autoconf.c
     46  */
     47 
     48 #include <sys/cdefs.h>
     49 __KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.30 2020/05/02 16:44:34 bouyer Exp $");
     50 
     51 #include "opt_multiprocessor.h"
     52 #include "opt_intrdebug.h"
     53 
     54 #include <sys/param.h>
     55 #include <sys/systm.h>
     56 #include <sys/buf.h>
     57 #include <sys/cpu.h>
     58 #include <sys/device.h>
     59 
     60 #include <machine/pte.h>
     61 #include <machine/cpufunc.h>
     62 
     63 #include "acpica.h"
     64 #include "ioapic.h"
     65 #include "lapic.h"
     66 
     67 #if NACPICA > 0
     68 #include <dev/acpi/acpi_srat.h>
     69 #endif
     70 
     71 #if NIOAPIC > 0
     72 #include <machine/i82093var.h>
     73 #endif
     74 
     75 #if NLAPIC > 0
     76 #include <machine/i82489var.h>
     77 #endif
     78 
     79 #include "bios32.h"
     80 #if NBIOS32 > 0
     81 #include <machine/bios32.h>
     82 /* XXX */
     83 extern void platform_init(void);
     84 #endif
     85 
     86 #include <x86/efi.h>
     87 #include <x86/x86/tsc.h>
     88 
     89 /*
     90  * Determine i/o configuration for a machine.
     91  */
     92 void
     93 cpu_configure(void)
     94 {
     95 #ifdef XEN
     96 	if (vm_guest == VM_GUEST_XENPVH)
     97 		xen_startrtclock();
     98 	else
     99 		startrtclock();
    100 #else
    101 	startrtclock();
    102 #endif
    103 
    104 #if NBIOS32 > 0
    105 	efi_init();
    106 	bios32_init();
    107 	platform_init();
    108 	/* identify hypervisor type from SMBIOS */
    109 	identify_hypervisor();
    110 #endif
    111 
    112 	if (config_rootfound("mainbus", NULL) == NULL)
    113 		panic("configure: mainbus not configured");
    114 
    115 #ifdef INTRDEBUG
    116 	intr_printconfig();
    117 #endif
    118 
    119 #if NIOAPIC > 0
    120 	ioapic_enable();
    121 #endif
    122 
    123 #ifdef MULTIPROCESSOR
    124 	cpu_init_idle_lwps();
    125 #endif
    126 
    127 #if NACPICA > 0
    128 	/* Load NUMA memory regions into UVM. */
    129 	acpisrat_load_uvm();
    130 #endif
    131 
    132 	spl0();
    133 	lcr8(0);
    134 }
    135