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      1 /*	$NetBSD: autoconf.c,v 1.107 2020/05/02 16:44:35 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 1.107 2020/05/02 16:44:35 bouyer Exp $");
     50 
     51 #include "opt_intrdebug.h"
     52 #include "opt_multiprocessor.h"
     53 
     54 #include <sys/param.h>
     55 #include <sys/systm.h>
     56 #include <sys/buf.h>
     57 #include <sys/proc.h>
     58 #include <sys/device.h>
     59 
     60 #include <machine/pte.h>
     61 #include <machine/cpu.h>
     62 #include <machine/gdt.h>
     63 #include <machine/intr.h>
     64 #include <machine/pcb.h>
     65 #include <machine/cpufunc.h>
     66 #include <x86/fpu.h>
     67 
     68 #include "acpica.h"
     69 #include "ioapic.h"
     70 #include "lapic.h"
     71 
     72 #if NACPICA > 0
     73 #include <dev/acpi/acpi_srat.h>
     74 #endif
     75 
     76 #if NIOAPIC > 0
     77 #include <machine/i82093var.h>
     78 #endif
     79 
     80 #if NLAPIC > 0
     81 #include <machine/i82489reg.h>
     82 #include <machine/i82489var.h>
     83 #endif
     84 
     85 #include "bios32.h"
     86 #if NBIOS32 > 0
     87 #include <machine/bios32.h>
     88 /* XXX */
     89 extern void platform_init(void);
     90 #endif
     91 
     92 #include "opt_pcibios.h"
     93 #ifdef PCIBIOS
     94 #include <dev/pci/pcireg.h>
     95 #include <dev/pci/pcivar.h>
     96 #include <i386/pci/pcibios.h>
     97 #endif
     98 #include <x86/efi.h>
     99 
    100 /*
    101  * Determine i/o configuration for a machine.
    102  */
    103 void
    104 cpu_configure(void)
    105 {
    106 	struct pcb *pcb;
    107 
    108 #ifdef XEN
    109        if (vm_guest == VM_GUEST_XENPVH)
    110 	       xen_startrtclock();
    111        else
    112 		startrtclock();
    113 #else
    114 	startrtclock();
    115 #endif
    116 
    117 #if NBIOS32 > 0
    118 	efi_init();
    119 	bios32_init();
    120 	platform_init();
    121 	/* identify hypervisor type from SMBIOS */
    122 	identify_hypervisor();
    123 #endif
    124 #ifdef PCIBIOS
    125 	pcibios_init();
    126 #endif
    127 
    128 	if (config_rootfound("mainbus", NULL) == NULL)
    129 		panic("configure: mainbus not configured");
    130 
    131 #ifdef INTRDEBUG
    132 	intr_printconfig();
    133 #endif
    134 
    135 #if NIOAPIC > 0
    136 	ioapic_enable();
    137 #endif
    138 	fpuinit(&cpu_info_primary);
    139 	/* resync cr0 after FPU configuration */
    140 	pcb = lwp_getpcb(&lwp0);
    141 	pcb->pcb_cr0 = rcr0() & ~CR0_TS;
    142 #ifdef MULTIPROCESSOR
    143 	/* propagate this to the idle pcb's. */
    144 	cpu_init_idle_lwps();
    145 #endif
    146 
    147 #if NACPICA > 0
    148 	/* Load NUMA memory regions into UVM. */
    149 	acpisrat_load_uvm();
    150 #endif
    151 
    152 	spl0();
    153 #if NLAPIC > 0
    154 	lapic_write_tpri(0);
    155 #endif
    156 }
    157