i386_module.c revision 102960
1/*- 2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: head/sys/boot/i386/libi386/i386_module.c 102960 2002-09-05 11:16:23Z iwasaki $ 27 */ 28 29/* 30 * i386-specific module functionality. 31 * 32 */ 33 34#include <stand.h> 35#include <string.h> 36 37#include "bootstrap.h" 38#include "libi386.h" 39 40/* 41 * Use voodoo to load modules required by current hardware. 42 */ 43int 44i386_autoload(void) 45{ 46 int error; 47 int disabled; 48 char *rv; 49 50 /* XXX use PnP to locate stuff here */ 51 52 /* autoload ACPI support */ 53 /* XXX should be in 4th keyed off acpi_load */ 54 disabled = 0; 55 rv = getenv("hint.acpi.0.disabled"); 56 if (rv != NULL && strncmp(rv, "0", 1) != 0) { 57 disabled = 1; 58 } 59 60 if (getenv("acpi_load") && (!disabled)) { 61 error = mod_load("acpi", NULL, 0, NULL); 62 if (error != 0) 63 printf("ACPI autoload failed - %s\n", strerror(error)); 64 } 65 66 return(0); 67} 68