sys/arch/sun68k/stand/libsa/xxboot.c

   1 /*      $NetBSD: xxboot.c,v 1.5 2005/12/11 12:19:29 christos Exp $ */
   2
   3 /*-
   4  * Copyright (c) 1982, 1986, 1990, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  *      @(#)boot.c      8.1 (Berkeley) 6/10/93
  32  */
  33
  34 #include <sys/param.h>
  35 #include <sys/reboot.h>
  36 #include <machine/mon.h>
  37
  38 #include <stand.h>
  39 #include <loadfile.h>
  40 #include "libsa.h"
  41
  42 /*
  43  * Note that extname is edited based on the running machine type
  44  * (sun3 vs sun3x).  EXTNAMEX is the position of the 'x'.
  45  */
  46 char    extname[] = "netbsd.sun3x";
  47 #define EXTNAMEX (sizeof(extname)-2)
  48
  49 /*
  50  * If the PROM did not give us a specific kernel name to use,
  51  * and did not specify the -a flag (ask), then try the names
  52  * in the following list.
  53  */
  54 char *kernelnames[] = {
  55         "netbsd",
  56         "netbsd.old",
  57         extname,
  58         NULL
  59 };
  60 char    line[80];
  61
  62 void
  63 xxboot_main(const char *boot_type)
  64 {
  65         struct open_file f;
  66         char **npp;
  67         char *file;
  68         void *entry;
  69         int fd;
  70         u_long marks[MARK_MAX];
  71
  72         memset(marks, 0, sizeof(marks));
  73         if (_is2)
  74                 marks[MARK_START] = sun2_map_mem_load();
  75         printf(">> %s %s [%s]\n", bootprog_name, boot_type, bootprog_rev);
  76         prom_get_boot_info();
  77
  78         /*
  79          * Hold the raw device open so it will not be
  80          * closed and reopened on every attempt to
  81          * load files that did not exist.
  82          */
  83         f.f_flags = F_RAW;
  84         if (devopen(&f, 0, &file)) {
  85                 printf("%s: devopen failed\n", boot_type);
  86                 return;
  87         }
  88
  89         /*
  90          * Edit the "extended" kernel name based on
  91          * the type of machine we are running on.
  92          */
  93         if (_is2)
  94                 extname[EXTNAMEX - 1] = '2';
  95         if (_is3x == 0)
  96                 extname[EXTNAMEX] = 0;
  97
  98         /* If we got the "-a" flag, ask for the name. */
  99         if (prom_boothow & RB_ASKNAME)
 100                 goto just_ask;
 101
 102         /*
 103          * If the PROM gave us a file name,
 104          * it means the user asked for that
 105          * kernel name explicitly.
 106          */
 107         file = prom_bootfile;
 108         if (file && *file) {
 109                 fd = loadfile(file, marks, LOAD_KERNEL);
 110                 if (fd == -1) {
 111                         goto err;
 112                 } else {
 113                         goto gotit;
 114                 }
 115         }
 116
 117         /*
 118          * Try the default kernel names.
 119          */
 120         for (npp = kernelnames; *npp; npp++) {
 121                 file = *npp;
 122                 printf("%s: trying %s\n", boot_type, file);
 123                 fd = loadfile(file, marks, LOAD_KERNEL);
 124                 if (fd != -1)
 125                         goto gotit;
 126         }
 127
 128         /*
 129          * Ask what kernel name to load.
 130          */
 131         for (;;) {
 132
 133         just_ask:
 134                 file = kernelnames[0];
 135                 printf("filename? [%s]: ", file);
 136                 gets(line);
 137                 if (line[0])
 138                         file = line;
 139
 140                 fd = loadfile(file, marks, LOAD_KERNEL);
 141                 if (fd != -1)
 142                         break;
 143
 144         err:
 145                 printf("%s: %s: loadfile() failed.\n", boot_type, file);
 146         }
 147
 148 gotit:
 149         entry = (void *)marks[MARK_ENTRY];
 150         if (_is2) {
 151                 printf("relocating program...");
 152                 entry = sun2_map_mem_run(entry);
 153         }
 154         printf("starting program at 0x%x\n", (u_int)entry);
 155         chain_to(entry);
 156 }