bsp/hal/x86/pc/machdep.c

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This source file includes following definitions.
machine_idle
machine_reset
machine_powerdown
machine_bootinfo
machine_abort
machine_startup
   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  * machdep.c - machine-dependent functions for HAL
  32  */
  33 
  34 #include <kernel.h>
  35 #include <page.h>
  36 #include <machine/syspage.h>
  37 #include <sys/power.h>
  38 #include <sys/bootinfo.h>
  39 #include <mmu.h>
  40 #include <cpu.h>
  41 #include <cpufunc.h>
  42 #include <locore.h>
  43 
  44 
  45 #ifdef CONFIG_MMU
  46 /*
  47  * Virtual and physical address mapping
  48  *
  49  *      { virtual, physical, size, type }
  50  */
  51 static struct mmumap mmumap_table[] =
  52 {
  53         /*
  54          * RAM
  55          */
  56         { 0x80000000, 0x00000000, AUTOSIZE, VMT_RAM },
  57 
  58         { 0,0,0,0 }
  59 };
  60 #endif
  61 
  62 /*
  63  * Idle
  64  */
  65 void
  66 machine_idle(void)
  67 {
  68 
  69         cpu_idle();
  70 }
  71 
  72 /*
  73  * Cause an i386 machine reset.
  74  */
  75 static void
  76 machine_reset(void)
  77 {
  78         int i;
  79 
  80         /*
  81          * Try to do keyboard reset.
  82          */
  83         outb(0x64, 0xfe);
  84         for (i = 0; i < 10000; i++)
  85                 outb(0x80, 0);
  86 
  87         /*
  88          * Do cpu reset.
  89          */
  90         cpu_reset();
  91 
  92         /* NOTREACHED */
  93 }
  94 
  95 /*
  96  * Power down system.
  97  */
  98 void
  99 machine_powerdown(int state)
 100 {
 101 
 102         splhigh();
 103 
 104         DPRINTF(("Power down machine\n\n"));
 105 
 106         switch (state) {
 107         case PWR_SUSPEND:
 108         case PWR_OFF:
 109                 for (;;)
 110                         cpu_idle();
 111                 /* NOTREACHED */
 112                 break;
 113         case PWR_REBOOT:
 114                 machine_reset();
 115                 /* NOTREACHED */
 116                 break;
 117         }
 118 }
 119 
 120 /*
 121  * Get pointer to the boot information.
 122  */
 123 void
 124 machine_bootinfo(struct bootinfo **bip)
 125 {
 126         ASSERT(bip != NULL);
 127 
 128         *bip = (struct bootinfo *)BOOTINFO;
 129 }
 130 
 131 void
 132 machine_abort(void)
 133 {
 134 
 135         for (;;) ;
 136 }
 137 
 138 /*
 139  * Machine-dependent startup code
 140  */
 141 void
 142 machine_startup(void)
 143 {
 144 #ifdef CONFIG_MMU
 145         struct bootinfo *bi = (struct bootinfo *)BOOTINFO;
 146 #endif
 147 
 148         /*
 149          * Initialize CPU and basic hardware.
 150          */
 151         cpu_init();
 152         cache_init();
 153 
 154         /*
 155          * Reserve system pages.
 156          */
 157         page_reserve(kvtop(SYSPAGE), SYSPAGESZ);
 158 
 159 #ifdef CONFIG_MMU
 160         /*
 161          * Modify page mapping
 162          * We assume the first block in ram[] for x86 is main memory.
 163          */
 164         mmumap_table[0].size = bi->ram[0].size;
 165 
 166         /*
 167          * Initialize MMU
 168          */
 169         mmu_init(mmumap_table);
 170 #endif
 171 }
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root/bsp/hal/x86/pc/machdep.c

DEFINITIONS
