sys/arch/mmeye/stand/bootelf/boot.c

   1 /*      $NetBSD: boot.c,v 1.5 2009/03/14 15:36:11 dsl Exp $     */
   2
   3 /*-
   4  * Copyright (C) 1999 Tsubai Masanari.  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  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <sys/param.h>
  30 #include <sys/sysctl.h>
  31 #include <machine/cpu.h>
  32 #include <err.h>
  33 #include <stdio.h>
  34 #include <stdlib.h>
  35 #include <unistd.h>
  36
  37 #include <lib/libsa/loadfile.h>
  38
  39 #if 1
  40 # define DPRINTF printf
  41 #else
  42 # define DPRINTF while (0) printf
  43 #endif
  44
  45 void LoadAndReset(void *);
  46
  47 char *netbsd = "/netbsd";
  48
  49 int
  50 main(int argc, char *argv[])
  51 {
  52         u_long marks[MARK_MAX];
  53         u_long start, entry;
  54         int fd, sz, i;
  55         u_long *ap;
  56         u_long cksum, *lp;
  57         void *image;
  58
  59         /* use the specified kernel if any */
  60         if (argc > 1)
  61                 netbsd = argv[1];
  62
  63         DPRINTF("loading %s...\n", netbsd);
  64
  65         /* count kernel size */
  66         marks[MARK_START] = 0;
  67         fd = loadfile(netbsd, marks, COUNT_ALL);
  68         if (fd == -1)
  69                 err(0, "loadfile(1)");
  70         close(fd);
  71
  72         sz = marks[MARK_END] - marks[MARK_START];
  73         start = marks[MARK_START];
  74         entry = marks[MARK_ENTRY];
  75
  76         DPRINTF("size  = 0x%x\n", sz);
  77         DPRINTF("start = 0x%lx\n", start);
  78
  79         ap = malloc(sz + 2 * sizeof(long));
  80         if (ap == NULL)
  81                 err(0, "malloc");
  82
  83         image = &ap[2];
  84
  85         marks[MARK_START] = (u_long)image - start;
  86         fd = loadfile(netbsd, marks, LOAD_ALL);
  87         if (fd == -1)
  88                 err(0, "loadfile(2)");
  89         close(fd);
  90
  91         /* ssym = marks[MARK_SYM]; */
  92         /* esym = marks[MARK_END]; */
  93
  94         cksum = 0;
  95         lp = image;
  96         for (i = 0; i < sz / sizeof(cksum); i++)
  97                 cksum += *lp++;
  98
  99         ap[0] = sz;
 100         ap[1] = cksum;
 101         LoadAndReset(ap);
 102
 103         printf("LoadAndReset returned...\n");
 104         free(ap);
 105         exit(0);
 106 }
 107
 108 void
 109 LoadAndReset(void *image)
 110 {
 111         int mib[2];
 112         u_long val;
 113
 114         mib[0] = CTL_MACHDEP;
 115         mib[1] = CPU_LOADANDRESET;
 116         val = (u_long)image;
 117
 118         sysctl(mib, 2, NULL, NULL, &val, sizeof(val));
 119 }