sys/boot/ofw/common/main.c

   1 /*-
   2  * Copyright (c) 2000 Benno Rice <benno@jeamland.net>
   3  * Copyright (c) 2000 Stephane Potvin <sepotvin@videotron.ca>
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  *
  27  * $FreeBSD: src/sys/boot/ofw/common/main.c,v 1.3 2002/11/10 19:17:35 jake Exp $
  28  * $DragonFly: src/sys/boot/ofw/common/main.c,v 1.1 2003/11/10 06:08:37 dillon Exp $
  29  */
  30
  31 #include <stand.h>
  32 #include "openfirm.h"
  33 #include "libofw.h"
  34 #include "bootstrap.h"
  35
  36 struct arch_switch      archsw;         /* MI/MD interface boundary */
  37
  38 extern char end[];
  39 extern char bootprog_name[];
  40 extern char bootprog_rev[];
  41 extern char bootprog_date[];
  42 extern char bootprog_maker[];
  43
  44 phandle_t       chosen;
  45
  46 #define HEAP_SIZE       0x40000
  47
  48 void
  49 init_heap(void)
  50 {
  51         void    *base;
  52
  53         if ((base = ofw_alloc_heap(HEAP_SIZE)) == (void *)0xffffffff) {
  54                 printf("Heap memory claim failed!\n");
  55                 OF_enter();
  56         }
  57
  58         setheap(base, base + (HEAP_SIZE / sizeof(base)));
  59 }
  60
  61 uint32_t
  62 memsize(void)
  63 {
  64         ihandle_t       meminstance;
  65         phandle_t       memory;
  66         struct ofw_reg  reg;
  67
  68         OF_getprop(chosen, "memory", &meminstance, sizeof(meminstance));
  69         memory = OF_instance_to_package(meminstance);
  70
  71         OF_getprop(memory, "reg", &reg, sizeof(reg));
  72
  73         return (reg.size);
  74 }
  75
  76 int
  77 main(int (*openfirm)(void *))
  78 {
  79         int             i;
  80         char            bootpath[64];
  81         char            *ch;
  82
  83         /*
  84          * Initalise the OpenFirmware routines by giving them the entry point.
  85          */
  86         OF_init(openfirm);
  87
  88         chosen = OF_finddevice("/chosen");
  89
  90         /*
  91          * Set up console.
  92          */
  93         cons_probe();
  94
  95         /*
  96          * Initialise the heap as early as possible.  Once this is done,
  97          * alloc() is usable. The stack is buried inside us, so this is
  98          * safe.
  99          */
 100         init_heap();
 101
 102         /*
 103          * Initialise the block cache
 104          */
 105         bcache_init(32, 512);           /* 16k XXX tune this */
 106
 107         /*
 108          * March through the device switch probing for things.
 109          */
 110         for (i = 0; devsw[i] != NULL; i++)
 111                 if (devsw[i]->dv_init != NULL)
 112                         (devsw[i]->dv_init)();
 113
 114         printf("\n");
 115         printf("%s, Revision %s\n", bootprog_name, bootprog_rev);
 116         printf("(%s, %s)\n", bootprog_maker, bootprog_date);
 117         printf("Memory: %dKB\n", memsize() / 1024);
 118
 119         OF_getprop(chosen, "bootpath", bootpath, 64);
 120         ch = index(bootpath, ':');
 121         *ch = '\0';
 122         printf("Booted from: %s\n", bootpath);
 123
 124         printf("\n");
 125
 126         env_setenv("currdev", EV_VOLATILE, bootpath,
 127             ofw_setcurrdev, env_nounset);
 128         env_setenv("loaddev", EV_VOLATILE, bootpath, env_noset,
 129             env_nounset);
 130         setenv("LINES", "24", 1);               /* optional */
 131
 132         archsw.arch_getdev = ofw_getdev;
 133         archsw.arch_copyin = ofw_copyin;
 134         archsw.arch_copyout = ofw_copyout;
 135         archsw.arch_readin = ofw_readin;
 136         archsw.arch_autoload = ofw_autoload;
 137
 138         interact();                             /* doesn't return */
 139
 140         OF_exit();
 141
 142         return 0;
 143 }
 144
 145 COMMAND_SET(halt, "halt", "halt the system", command_halt);
 146
 147 static int
 148 command_halt(int argc, char *argv[])
 149 {
 150
 151         OF_exit();
 152         return (CMD_OK);
 153 }
 154
 155 COMMAND_SET(memmap, "memmap", "print memory map", command_memmap);
 156
 157 int
 158 command_memmap(int argc, char **argv)
 159 {
 160
 161         ofw_memmap();
 162         return (CMD_OK);
 163 }