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boot.c revision 1.3 
      1 /*	$NetBSD: boot.c,v 1.3 2006/04/03 06:15:00 uebayasi 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 __P((void *));
     46 
     47 char *netbsd = "/netbsd";
     48 
     49 int
     50 main(argc, argv)
     51 	int argc;
     52 	char *argv[];
     53 {
     54 	u_long marks[MARK_MAX];
     55 	u_long start, entry;
     56 	int fd, sz, i;
     57 	u_long *ap;
     58 	u_long cksum, *lp;
     59 	void *image;
     60 
     61 	/* use the specified kernel if any */
     62 	if (argc > 1)
     63 		netbsd = argv[1];
     64 
     65 	DPRINTF("loading %s...\n", netbsd);
     66 
     67 	/* count kernel size */
     68 	marks[MARK_START] = 0;
     69 	fd = loadfile(netbsd, marks, COUNT_ALL);
     70 	if (fd == -1)
     71 		err(0, "loadfile(1)");
     72 	close(fd);
     73 
     74 	sz = marks[MARK_END] - marks[MARK_START];
     75 	start = marks[MARK_START];
     76 	entry = marks[MARK_ENTRY];
     77 
     78 	DPRINTF("size  = 0x%x\n", sz);
     79 	DPRINTF("start = 0x%lx\n", start);
     80 
     81 	ap = malloc(sz + 2 * sizeof(long));
     82 	if (ap == NULL)
     83 		err(0, "malloc");
     84 
     85 	image = &ap[2];
     86 
     87 	marks[MARK_START] = (u_long)image - start;
     88 	fd = loadfile(netbsd, marks, LOAD_ALL);
     89 	if (fd == -1)
     90 		err(0, "loadfile(2)");
     91 	close(fd);
     92 
     93 	/* ssym = marks[MARK_SYM]; */
     94 	/* esym = marks[MARK_END]; */
     95 
     96 	cksum = 0;
     97 	lp = image;
     98 	for (i = 0; i < sz / sizeof(cksum); i++)
     99 		cksum += *lp++;
    100 
    101 	ap[0] = sz;
    102 	ap[1] = cksum;
    103 	LoadAndReset(ap);
    104 
    105 	printf("LoadAndReset returned...\n");
    106 	free(ap);
    107 	exit(0);
    108 }
    109 
    110 void
    111 LoadAndReset(image)
    112 	void *image;
    113 {
    114 	int mib[2];
    115 	u_long val;
    116 
    117 	mib[0] = CTL_MACHDEP;
    118 	mib[1] = CPU_LOADANDRESET;
    119 	val = (u_long)image;
    120 
    121 	sysctl(mib, 2, NULL, NULL, &val, sizeof(val));
    122 }
    123