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      1 /*	$NetBSD: boot.c,v 1.6 2009/03/14 21:04:13 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 }
    120