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root/bsp/hal/arm/integrator/machdep.c

DEFINITIONS

1. machine_idle
2. machine_reset
3. machine_powerdown
4. machine_bootinfo
5. machine_abort
6. machine_startup

   1 /*-
   2  * Copyright (c) 2008-2009, 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  */
  30 /*
  31  * machdep.c - machine-dependent routines for ARM Integrator-CP
  32  */
  34 #include <machine/syspage.h>
  35 #include <sys/power.h>
  36 #include <sys/bootinfo.h>
  37 #include <kernel.h>
  38 #include <page.h>
  39 #include <mmu.h>
  40 #include <cpu.h>
  41 #include <cpufunc.h>
  42 #include <locore.h>
  44 #include "platform.h"
  46 /* System control reg */
  47 #define SC_CTRL         (*(volatile uint32_t *)(FPGA_BASE + 0x0c))
  49 #define SCCTRL_SOFTRESET        0x08
  51 #ifdef CONFIG_MMU
  52 /*
  53  * Virtual and physical address mapping
  54  *
  55  *      { virtual, physical, size, type }
  56  */
  57 struct mmumap mmumap_table[] =
  58 {
  59         /*
  60          * Internal SRAM (4M)
  61          */
  62         { 0x80000000, 0x00000000, 0x400000, VMT_RAM },
  64         /*
  65          * FPGA core control (4K)
  66          */
  67         { 0xD0000000, 0x10000000, 0x1000, VMT_IO },
  69         /*
  70          * Counter/Timers (1M)
  71          */
  72         { 0xD3000000, 0x13000000, 0x100000, VMT_IO },
  74         /*
  75          * Interrupt controller (1M)
  76          */
  77         { 0xD4000000, 0x14000000, 0x100000, VMT_IO },
  79         /*
  80          * Real-time clock (1M)
  81          */
  82         { 0xD5000000, 0x15000000, 0x100000, VMT_IO },
  84         /*
  85          * UART 0 (1M)
  86          */
  87         { 0xD6000000, 0x16000000, 0x100000, VMT_IO },
  89         { 0,0,0,0 }
  90 };
  91 #endif
  93 /*
  94  * Idle
  95  */
  96 void
machine_idle(void)
  98 {
cpu_idle();
 101 }
 103 /*
 104  * Reset system.
 105  */
 106 static void
machine_reset(void)
 108 {
SC_CTRL = SCCTRL_SOFTRESET;
 112         for (;;) ;
 113         /* NOTREACHED */
 114 }
 116 /*
 117  * Set system power
 118  */
 119 void
machine_powerdown(int state)
 121 {
splhigh();
DPRINTF(("Power down machine\n"));
 127         switch (state) {
 128         case PWR_OFF:
 129                 for (;;)
cpu_idle();
 131                 /* NOTREACHED */
 132                 break;
 133         case PWR_REBOOT:
machine_reset();
 135                 /* NOTREACHED */
 136                 break;
 137         }
 138 }
 140 /*
 141  * Return pointer to the boot information.
 142  */
 143 void
machine_bootinfo(struct bootinfo **bip)
 145 {
 147         *bip = (struct bootinfo *)BOOTINFO;
 148 }
 150 void
machine_abort(void)
 152 {
 154         for (;;)
cpu_idle();
 156 }
 158 /*
 159  * Machine-dependent startup code
 160  */
 161 void
machine_startup(void)
 163 {
 165         /*
 166          * Initialize CPU and basic hardware.
 167          */
cpu_init();
cache_init();
 171         /*
 172          * Reserve system pages.
 173          */
page_reserve(kvtop(SYSPAGE), SYSPAGESZ);
 176         /*
 177          * Setup vector page.
 178          */
vector_copy((vaddr_t)ptokv(CONFIG_ARM_VECTORS));
 181 #ifdef CONFIG_MMU
 182         /*
 183          * Initialize MMU
 184          */
mmu_init(mmumap_table);
 186 #endif
 187 }