sys/kern/main.c

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main
   1 /*-
   2  * Copyright (c) 2005-2009, Kohsuke Ohtani
   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. Neither the name of the author nor the names of any co-contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29 
  30 /*
  31  * main.c - kernel main routine
  32  */
  33 
  34 #include <kernel.h>
  35 #include <task.h>
  36 #include <thread.h>
  37 #include <timer.h>
  38 #include <page.h>
  39 #include <kmem.h>
  40 #include <vm.h>
  41 #include <sched.h>
  42 #include <exception.h>
  43 #include <irq.h>
  44 #include <ipc.h>
  45 #include <device.h>
  46 #include <sync.h>
  47 #include <hal.h>
  48 
  49 /*
  50  * Initialization code.
  51  *
  52  * Called from kernel_start() routine that is
  53  * implemented in HAL.
  54  * We assume that the following machine state has
  55  * been already set before this routine.
  56  *      - Kernel BSS section is filled with 0.
  57  *      - Kernel stack is configured.
  58  *      - All interrupts are disabled.
  59  *      - Minimum page table is set. (MMU systems only)
  60  */
  61 int
  62 main(void)
  63 {
  64 
  65         sched_lock();
  66         diag_init();
  67         DPRINTF((BANNER));
  68 
  69         /*
  70          * Initialize memory managers.
  71          */
  72         page_init();
  73         kmem_init();
  74 
  75         /*
  76          * Do machine-dependent
  77          * initialization.
  78          */
  79         machine_startup();
  80 
  81         /*
  82          * Initialize kernel core.
  83          */
  84         vm_init();
  85         task_init();
  86         thread_init();
  87         sched_init();
  88         exception_init();
  89         timer_init();
  90         object_init();
  91         msg_init();
  92 
  93         /*
  94          * Enable interrupt and
  95          * initialize devices.
  96          */
  97         irq_init();
  98         clock_init();
  99         device_init();
 100 
 101         /*
 102          * Set up boot tasks.
 103          */
 104         task_bootstrap();
 105 
 106         /*
 107          * Start scheduler and
 108          * enter idle loop.
 109          */
 110         sched_unlock();
 111         thread_idle();
 112 
 113         /* NOTREACHED */
 114         return 0;
 115 }
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root/sys/kern/main.c

DEFINITIONS
