bsp/boot/common/main.c

Prex Home / Browse Source - Prex Version: 0.9.0
/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
main
panic
   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 - Boot loader main module.
  32  */
  33 
  34 #include <boot.h>
  35 #include <machdep.h>
  36 #include <sys/bootinfo.h>
  37 #include "load.h"
  38 
  39 typedef void (*entry_t)(void);
  40 
  41 /*
  42  * Loader main routine
  43  *
  44  * We assume that the following machine state has
  45  * been already set before this routine.
  46  *      - CPU is initialized.
  47  *      - DRAM is configured.
  48  *      - Loader BSS section is filled with 0.
  49  *      - Loader stack is configured.
  50  *      - All interrupts are disabled.
  51  */
  52 int
  53 main(void)
  54 {
  55         entry_t entry;
  56 
  57         memset(bootinfo, 0, BOOTINFOSZ);
  58 
  59         /*
  60          * Initialize debug port.
  61          */
  62         debug_init();
  63         DPRINTF(("Prex Boot Loader\n"));
  64 
  65         /*
  66          * Do platform dependent initialization.
  67          */
  68         startup();
  69 
  70         /*
  71          * Show splash screen.
  72          */
  73         splash();
  74 
  75         /*
  76          * Load OS modules to appropriate locations.
  77          */
  78         load_os();
  79 
  80         /*
  81          * Dump boot infomation for debug.
  82          */
  83         dump_bootinfo();
  84 
  85         /*
  86          * Launch kernel.
  87          */
  88         entry = (entry_t)kvtop(bootinfo->kernel.entry);
  89         DPRINTF(("Entering kernel (at 0x%lx) ...\n\n", (long)entry));
  90         (*entry)();
  91 
  92         panic("Oops!");
  93         /* NOTREACHED */
  94         return 0;
  95 }
  96 
  97 /*
  98  * panic - show error message and hang up.
  99  */
 100 void
 101 panic(const char *msg)
 102 {
 103 
 104         DPRINTF(("Panic: %s\n", msg));
 105 
 106         for (;;) ;
 107         /* NOTREACHED */
 108 }
/* [<][>][^][v][top][bottom][index][help] */
root/bsp/boot/common/main.c

DEFINITIONS
