| 1 | /* $NetBSD: autoconf.c,v 1.25 2015/11/22 13:41:24 maxv 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 1.25 2015/11/22 13:41:24 maxv 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 "ioapic.h" |
| 64 | #include "lapic.h" |
| 65 | |
| 66 | #if NIOAPIC > 0 |
| 67 | #include <machine/i82093var.h> |
| 68 | #endif |
| 69 | |
| 70 | #if NLAPIC > 0 |
| 71 | #include <machine/i82489var.h> |
| 72 | #endif |
| 73 | |
| 74 | #include "bios32.h" |
| 75 | #if NBIOS32 > 0 |
| 76 | #include <machine/bios32.h> |
| 77 | /* XXX */ |
| 78 | extern void platform_init(void); |
| 79 | #endif |
| 80 | |
| 81 | #include <x86/x86/tsc.h> |
| 82 | |
| 83 | /* |
| 84 | * Determine i/o configuration for a machine. |
| 85 | */ |
| 86 | void |
| 87 | cpu_configure(void) |
| 88 | { |
| 89 | startrtclock(); |
| 90 | |
| 91 | #if NBIOS32 > 0 |
| 92 | bios32_init(); |
| 93 | platform_init(); |
| 94 | #endif |
| 95 | |
| 96 | x86_64_proc0_tss_ldt_init(); |
| 97 | |
| 98 | if (config_rootfound("mainbus" , NULL) == NULL) |
| 99 | panic("configure: mainbus not configured" ); |
| 100 | |
| 101 | #ifdef INTRDEBUG |
| 102 | intr_printconfig(); |
| 103 | #endif |
| 104 | |
| 105 | #if NIOAPIC > 0 |
| 106 | ioapic_enable(); |
| 107 | #endif |
| 108 | |
| 109 | #ifdef MULTIPROCESSOR |
| 110 | cpu_init_idle_lwps(); |
| 111 | #endif |
| 112 | |
| 113 | spl0(); |
| 114 | lcr8(0); |
| 115 | } |
| 116 | |