sys/arch/i386/stand/netboot/main.c

   1 /*      $NetBSD: main.c,v 1.16 2009/03/18 10:22:30 cegger Exp $  */
   2
   3 /*
   4  * Copyright (c) 1996
   5  *      Matthias Drochner.  All rights reserved.
   6  * Copyright (c) 1996
   7  *      Perry E. Metzger.  All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgements:
  19  *      This product includes software developed for the NetBSD Project
  20  *      by Matthias Drochner.
  21  *      This product includes software developed for the NetBSD Project
  22  *      by Perry E. Metzger.
  23  * 4. The names of the authors may not be used to endorse or promote products
  24  *    derived from this software without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  27  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  28  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  29  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  30  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  31  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  32  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  33  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  34  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  35  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  36  *
  37  */
  38
  39
  40 #include <lib/libkern/libkern.h>
  41
  42 #include <lib/libsa/stand.h>
  43
  44 #include <libi386.h>
  45
  46 int errno;
  47
  48 extern char     bootprog_name[], bootprog_rev[], bootprog_kernrev[];
  49
  50 #define TIMEOUT 5
  51
  52 void    command_help(char *);
  53 void    command_quit(char *);
  54 void    command_boot(char *);
  55
  56 const struct bootblk_command commands[] = {
  57         { "help",       command_help },
  58         { "?",          command_help },
  59         { "quit",       command_quit },
  60         { "boot",       command_boot },
  61         { NULL,         NULL },
  62 };
  63
  64 int
  65 bootit(const char *filename, int howto)
  66 {
  67         if (exec_netbsd(filename, 0, howto, 0, clear_pc_screen) < 0)
  68                 printf("boot: %s\n", strerror(errno));
  69         else
  70                 printf("boot returned\n");
  71         return (-1);
  72 }
  73
  74 static void
  75 print_banner(void)
  76 {
  77         clear_pc_screen();
  78
  79         printf("\n"
  80                ">> %s, Revision %s (from NetBSD %s)\n"
  81                ">> Memory: %d/%d k\n"
  82                "Press return to boot now, any other key for boot menu\n"
  83                "starting in ",
  84                bootprog_name, bootprog_rev, bootprog_kernrev,
  85                getbasemem(), getextmem());
  86 }
  87
  88 int
  89 main(void)
  90 {
  91         char c;
  92
  93         initio(CONSDEV_AUTO);
  94         gateA20();
  95
  96         print_banner();
  97
  98         c = awaitkey(TIMEOUT, 1);
  99         if ((c != '\r') && (c != '\n') && (c != '\0')) {
 100                 printf("type \"?\" or \"help\" for help.\n");
 101                 bootmenu();     /* does not return */
 102         }
 103
 104         bootit("netbsd", 0);
 105
 106         /* if that fails, let BIOS look for boot device */
 107         return (1);
 108 }
 109
 110 /* ARGSUSED */
 111 void
 112 command_help(char *arg)
 113 {
 114         printf("commands are:\n"
 115                "boot [filename] [-acdqsv]\n"
 116                "     (ex. \"netbsd.old -s\"\n"
 117                "help|?\n"
 118                "quit\n");
 119 }
 120
 121 /* ARGSUSED */
 122 void
 123 command_quit(char *arg)
 124 {
 125         printf("Exiting... goodbye...\n");
 126         exit(0);
 127 }
 128
 129 void
 130 command_boot(char *arg)
 131 {
 132         char *filename;
 133         int howto;
 134
 135         if (parseboot(arg, &filename, &howto))
 136                 bootit(filename, howto);
 137 }