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Annotation of src/sys/arch/i386/i386/autoconf.c, Revision 1.100.10.2

1.100.10.2! pgoyette    1: /*     $NetBSD: autoconf.c,v 1.102 2017/04/22 04:29:31 nonaka Exp $    */
1.11      cgd         2:
1.1       cgd         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.
1.72      agc        18:  * 3. Neither the name of the University nor the names of its contributors
1.1       cgd        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:  *
1.11      cgd        34:  *     @(#)autoconf.c  7.1 (Berkeley) 5/9/91
1.1       cgd        35:  */
                     36:
                     37: /*
                     38:  * Setup the system to run on the current machine.
                     39:  *
1.64      fvdl       40:  * Configure() is called at boot time and initializes the vba
1.1       cgd        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.
1.80      thorpej    44:  *
                     45:  * Lots of this is now in x86/x86/x86_autoconf.c
1.1       cgd        46:  */
1.59      lukem      47:
                     48: #include <sys/cdefs.h>
1.100.10.2! pgoyette   49: __KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.102 2017/04/22 04:29:31 nonaka Exp $");
1.43      drochner   50:
                     51: #include "opt_compat_oldboot.h"
1.94      dyoung     52: #include "opt_intrdebug.h"
1.71      martin     53: #include "opt_multiprocessor.h"
1.43      drochner   54:
1.9       mycroft    55: #include <sys/param.h>
                     56: #include <sys/systm.h>
                     57: #include <sys/buf.h>
1.61      drochner   58: #include <sys/proc.h>
1.97      dholland   59: #include <sys/device.h>
1.1       cgd        60:
1.9       mycroft    61: #include <machine/pte.h>
1.20      christos   62: #include <machine/cpu.h>
1.64      fvdl       63: #include <machine/gdt.h>
1.94      dyoung     64: #include <machine/intr.h>
1.61      drochner   65: #include <machine/pcb.h>
1.90      ad         66: #include <machine/cpufunc.h>
1.100     dsl        67: #include <x86/fpu.h>
1.1       cgd        68:
1.64      fvdl       69: #include "ioapic.h"
1.65      fvdl       70: #include "lapic.h"
1.64      fvdl       71:
                     72: #if NIOAPIC > 0
                     73: #include <machine/i82093var.h>
                     74: #endif
                     75:
1.65      fvdl       76: #if NLAPIC > 0
1.100.10.1  pgoyette   77: #include <machine/i82489reg.h>
1.65      fvdl       78: #include <machine/i82489var.h>
                     79: #endif
                     80:
1.45      thorpej    81: #include "bios32.h"
                     82: #if NBIOS32 > 0
                     83: #include <machine/bios32.h>
1.89      jmcneill   84: /* XXX */
                     85: extern void platform_init(void);
1.45      thorpej    86: #endif
                     87:
                     88: #include "opt_pcibios.h"
                     89: #ifdef PCIBIOS
                     90: #include <dev/pci/pcireg.h>
                     91: #include <dev/pci/pcivar.h>
                     92: #include <i386/pci/pcibios.h>
                     93: #endif
                     94:
1.1       cgd        95: /*
                     96:  * Determine i/o configuration for a machine.
                     97:  */
1.19      mycroft    98: void
1.69      dsl        99: cpu_configure(void)
1.1       cgd       100: {
1.95      rmind     101:        struct pcb *pcb;
1.1       cgd       102:
1.12      mycroft   103:        startrtclock();
1.45      thorpej   104:
                    105: #if NBIOS32 > 0
                    106:        bios32_init();
1.89      jmcneill  107:        platform_init();
1.45      thorpej   108: #endif
                    109: #ifdef PCIBIOS
                    110:        pcibios_init();
                    111: #endif
1.12      mycroft   112:
1.18      cgd       113:        if (config_rootfound("mainbus", NULL) == NULL)
                    114:                panic("configure: mainbus not configured");
1.12      mycroft   115:
1.65      fvdl      116: #ifdef INTRDEBUG
                    117:        intr_printconfig();
                    118: #endif
1.12      mycroft   119:
1.64      fvdl      120: #if NIOAPIC > 0
                    121:        ioapic_enable();
                    122: #endif
1.99      dsl       123:        fpuinit(&cpu_info_primary);
1.64      fvdl      124:        /* resync cr0 after FPU configuration */
1.95      rmind     125:        pcb = lwp_getpcb(&lwp0);
                    126:        pcb->pcb_cr0 = rcr0() & ~CR0_TS;
1.64      fvdl      127: #ifdef MULTIPROCESSOR
                    128:        /* propagate this to the idle pcb's. */
1.86      yamt      129:        cpu_init_idle_lwps();
1.64      fvdl      130: #endif
1.61      drochner  131:
1.12      mycroft   132:        spl0();
1.65      fvdl      133: #if NLAPIC > 0
1.100.10.2! pgoyette  134:        lapic_write_tpri(0);
1.65      fvdl      135: #endif
1.24      gwr       136: }