1 /* 2 * Copyright (c) 1993 Adam Glass 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 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Adam Glass. 16 * 4. The name of the Author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY Adam Glass ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * $Id: autoconf.c,v 1.12 1994/07/27 04:51:58 gwr Exp $ 32 */ 33 34 /* 35 * Setup the system to run on the current machine. 36 * 37 * Configure() is called at boot time. Available 38 * devices are determined (from possibilities mentioned in ioconf.c), 39 * and the drivers are initialized. 40 */ 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/map.h> 45 #include <sys/buf.h> 46 #include <sys/dkstat.h> 47 #include <sys/conf.h> 48 #include <sys/dmap.h> 49 #include <sys/reboot.h> 50 #include <sys/device.h> 51 52 #include <machine/autoconf.h> 53 #include <machine/vmparam.h> 54 #include <machine/cpu.h> 55 #include <machine/pte.h> 56 #include <machine/isr.h> 57 58 extern void mainbusattach __P((struct device *, struct device *, void *)); 59 60 struct mainbus_softc { 61 struct device mainbus_dev; 62 }; 63 64 struct cfdriver mainbuscd = 65 { NULL, "mainbus", always_match, mainbusattach, DV_DULL, 66 sizeof(struct mainbus_softc), 0}; 67 68 void mainbusattach(parent, self, args) 69 struct device *parent; 70 struct device *self; 71 void *args; 72 { 73 struct cfdata *new_match; 74 75 printf("\n"); 76 while (1) { 77 new_match = config_search(NULL, self, NULL); 78 if (!new_match) break; 79 config_attach(self, new_match, NULL, NULL); 80 } 81 } 82 83 int nmi_intr(arg) 84 int arg; 85 { 86 printf("nmi interrupt received\n"); 87 return 1; 88 } 89 90 void configure() 91 { 92 int root_found; 93 extern int soft1intr(); 94 95 isr_init(); 96 root_found = config_rootfound("mainbus", NULL); 97 if (!root_found) 98 panic("configure: autoconfig failed, no device tree root found"); 99 isr_add(7, nmi_intr, 0); 100 isr_add(1, soft1intr, 0); 101 isr_cleanup(); 102 conf_init(); 103 } 104 105 int always_match(parent, cf, args) 106 struct device *parent; 107 struct cfdata *cf; 108 void *args; 109 { 110 return 1; 111 } 112 113 /* 114 * Configure swap space and related parameters. 115 */ 116 void 117 swapconf() 118 { 119 struct swdevt *swp; 120 u_int maj; 121 int nblks; 122 123 for (swp = swdevt; swp->sw_dev != NODEV; swp++) { 124 maj = major(swp->sw_dev); 125 126 if (maj > nblkdev) /* paranoid? */ 127 break; 128 129 if (bdevsw[maj].d_psize) { 130 nblks = (*bdevsw[maj].d_psize)(swp->sw_dev); 131 if (nblks > 0 && 132 (swp->sw_nblks == 0 || swp->sw_nblks > nblks)) 133 swp->sw_nblks = nblks; 134 swp->sw_nblks = ctod(dtoc(swp->sw_nblks)); 135 } 136 } 137 } 138