The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/amd64/amd64/autoconf.c

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    1 /*-
    2  * Copyright (c) 1990 The Regents of the University of California.
    3  * All rights reserved.
    4  *
    5  * This code is derived from software contributed to Berkeley by
    6  * William Jolitz.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  * 4. Neither the name of the University nor the names of its contributors
   17  *    may be used to endorse or promote products derived from this software
   18  *    without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   30  * SUCH DAMAGE.
   31  *
   32  *      from: @(#)autoconf.c    7.1 (Berkeley) 5/9/91
   33  */
   34 
   35 #include <sys/cdefs.h>
   36 __FBSDID("$FreeBSD: releng/9.1/sys/amd64/amd64/autoconf.c 146794 2005-05-29 23:44:22Z marcel $");
   37 
   38 /*
   39  * Setup the system to run on the current machine.
   40  *
   41  * Configure() is called at boot time and initializes the vba
   42  * device tables and the memory controller monitoring.  Available
   43  * devices are determined (from possibilities mentioned in ioconf.c),
   44  * and the drivers are initialized.
   45  */
   46 #include "opt_bootp.h"
   47 #include "opt_isa.h"
   48 #include "opt_bus.h"
   49 
   50 #include <sys/param.h>
   51 #include <sys/systm.h>
   52 #include <sys/bus.h>
   53 #include <sys/conf.h>
   54 #include <sys/reboot.h>
   55 #include <sys/kernel.h>
   56 #include <sys/malloc.h>
   57 #include <sys/mount.h>
   58 #include <sys/cons.h>
   59 
   60 #include <sys/socket.h>
   61 #include <net/if.h>
   62 #include <net/if_dl.h>
   63 #include <net/if_types.h>
   64 #include <net/if_var.h>
   65 #include <net/ethernet.h>
   66 #include <netinet/in.h>
   67 
   68 #include <machine/md_var.h>
   69 
   70 #ifdef DEV_ISA
   71 #include <isa/isavar.h>
   72 
   73 device_t isa_bus_device = 0;
   74 #endif
   75 
   76 static void     configure_first(void *);
   77 static void     configure(void *);
   78 static void     configure_final(void *);
   79 
   80 SYSINIT(configure1, SI_SUB_CONFIGURE, SI_ORDER_FIRST, configure_first, NULL);
   81 /* SI_ORDER_SECOND is hookable */
   82 SYSINIT(configure2, SI_SUB_CONFIGURE, SI_ORDER_THIRD, configure, NULL);
   83 /* SI_ORDER_MIDDLE is hookable */
   84 SYSINIT(configure3, SI_SUB_CONFIGURE, SI_ORDER_ANY, configure_final, NULL);
   85 
   86 /*
   87  * Determine i/o configuration for a machine.
   88  */
   89 static void
   90 configure_first(dummy)
   91         void *dummy;
   92 {
   93 
   94         /* nexus0 is the top of the amd64 device tree */
   95         device_add_child(root_bus, "nexus", 0);
   96 }
   97 
   98 static void
   99 configure(dummy)
  100         void *dummy;
  101 {
  102 
  103         /*
  104          * Enable interrupts on the processor.  The interrupts are still
  105          * disabled in the interrupt controllers until interrupt handlers
  106          * are registered.
  107          */
  108         enable_intr();
  109 
  110         /* initialize new bus architecture */
  111         root_bus_configure();
  112 
  113 #ifdef DEV_ISA
  114         /*
  115          * Explicitly probe and attach ISA last.  The isa bus saves
  116          * it's device node at attach time for us here.
  117          */
  118         if (isa_bus_device)
  119                 isa_probe_children(isa_bus_device);
  120 #endif
  121 }
  122 
  123 static void
  124 configure_final(dummy)
  125         void *dummy;
  126 {
  127 
  128         cninit_finish(); 
  129         if (bootverbose)
  130                 printf("Device configuration finished.\n");
  131         cold = 0;
  132 }

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