470cd51ee6
makes sure that sysinit tasks that run after configure_first(), but before configure() have a nexus to hang devices off.
133 lines
3.8 KiB
C
133 lines
3.8 KiB
C
/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)autoconf.c 7.1 (Berkeley) 5/9/91
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* Setup the system to run on the current machine.
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*
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* Configure() is called at boot time and initializes the vba
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* device tables and the memory controller monitoring. Available
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* devices are determined (from possibilities mentioned in ioconf.c),
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* and the drivers are initialized.
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*/
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#include "opt_bootp.h"
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#include "opt_isa.h"
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#include "opt_bus.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/reboot.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/mount.h>
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#include <sys/cons.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/if_types.h>
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#include <net/if_var.h>
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#include <net/ethernet.h>
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#include <netinet/in.h>
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#include <machine/md_var.h>
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#ifdef DEV_ISA
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#include <isa/isavar.h>
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device_t isa_bus_device = 0;
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#endif
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static void configure_first(void *);
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static void configure(void *);
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static void configure_final(void *);
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SYSINIT(configure1, SI_SUB_CONFIGURE, SI_ORDER_FIRST, configure_first, NULL);
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/* SI_ORDER_SECOND is hookable */
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SYSINIT(configure2, SI_SUB_CONFIGURE, SI_ORDER_THIRD, configure, NULL);
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/* SI_ORDER_MIDDLE is hookable */
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SYSINIT(configure3, SI_SUB_CONFIGURE, SI_ORDER_ANY, configure_final, NULL);
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/*
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* Determine i/o configuration for a machine.
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*/
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static void
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configure_first(dummy)
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void *dummy;
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{
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/* nexus0 is the top of the amd64 device tree */
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device_add_child(root_bus, "nexus", 0);
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}
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static void
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configure(dummy)
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void *dummy;
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{
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/*
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* Enable interrupts on the processor. The interrupts are still
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* disabled in the interrupt controllers until interrupt handlers
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* are registered.
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*/
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enable_intr();
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/* initialize new bus architecture */
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root_bus_configure();
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#ifdef DEV_ISA
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/*
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* Explicitly probe and attach ISA last. The isa bus saves
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* it's device node at attach time for us here.
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*/
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if (isa_bus_device)
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isa_probe_children(isa_bus_device);
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#endif
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}
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static void
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configure_final(dummy)
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void *dummy;
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{
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cninit_finish();
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if (bootverbose)
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printf("Device configuration finished.\n");
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cold = 0;
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}
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