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      1 /*	$NetBSD: autoconf.c,v 1.31 2012/10/27 17:17:43 chs Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2000 Soren S. Jorvang.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions, and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     25  * SUCH DAMAGE.
     26  */
     27 
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.31 2012/10/27 17:17:43 chs Exp $");
     30 
     31 #include <sys/param.h>
     32 #include <sys/buf.h>
     33 #include <sys/cpu.h>
     34 #include <sys/conf.h>
     35 #include <sys/device.h>
     36 #include <sys/intr.h>
     37 #include <sys/systm.h>
     38 
     39 #include <dev/pci/pcivar.h>
     40 #include <dev/ata/atavar.h>
     41 
     42 extern char	bootstring[];
     43 extern int	netboot;
     44 extern int	bootunit;
     45 extern int	bootpart;
     46 
     47 void
     48 cpu_configure(void)
     49 {
     50 
     51 	(void)splhigh();
     52 
     53 	intr_init();
     54 
     55 	if (config_rootfound("mainbus", NULL) == NULL)
     56 		panic("no mainbus found");
     57 
     58 	/*
     59 	 * Hardware interrupts will be enabled in
     60 	 * sys/arch/mips/mips/mips3_clockintr.c:mips3_initclocks()
     61 	 * to avoid hardclock(9) by CPU INT5 before softclockintr is
     62 	 * initialized in initclocks().
     63 	 */
     64 }
     65 
     66 void
     67 cpu_rootconf(void)
     68 {
     69 
     70 	printf("boot device: %s\n",
     71 	    booted_device ? device_xname(booted_device) : "<unknown>");
     72 
     73 	rootconf();
     74 }
     75 
     76 void
     77 device_register(device_t dev, void *aux)
     78 {
     79 
     80 	if (booted_device != NULL)
     81 		return;
     82 
     83 	if (netboot == 1) {
     84 		/* check tlp0 on netboot */
     85 		if (device_class(dev) == DV_IFNET &&
     86 		    device_is_a(dev, "tlp")) {
     87 			struct pci_attach_args *pa = aux;
     88 
     89 			if (pa->pa_bus == 0 &&
     90 			    pa->pa_device == 7 &&
     91 			    pa->pa_function == 0)
     92 				booted_device = dev;
     93 		}
     94 	} else {
     95 		/* check wd channel and drive */
     96 		if (device_class(dev) == DV_DISK &&
     97 		    device_is_a(dev, "wd")) {
     98 			struct ata_device *adev = aux;
     99 			int unit;
    100 
    101 			unit = adev->adev_channel * 2 +
    102 			    adev->adev_drv_data->drive;
    103 			if (unit == bootunit) {
    104 				booted_device = dev;
    105 			}
    106 		}
    107 		/*
    108 		 * XXX Match up MBR boot specification with BSD disklabel
    109 		 *     for root?
    110 		 */
    111 		booted_partition = 0;
    112 	}
    113 }
    114