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main.c revision 1.8 
      1 /*	$NetBSD: main.c,v 1.8 2005/06/22 20:42:45 dyoung 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 #include <lib/libkern/libkern.h>
     40 
     41 #include <lib/libsa/stand.h>
     42 
     43 #include <libi386.h>
     44 #include "pxeboot.h"
     45 
     46 int errno;
     47 int debug;
     48 
     49 extern char	bootprog_name[], bootprog_rev[], bootprog_date[],
     50 		bootprog_maker[];
     51 
     52 #define TIMEOUT 5
     53 
     54 int	main(void);
     55 
     56 void	command_help __P((char *));
     57 void	command_quit __P((char *));
     58 void	command_boot __P((char *));
     59 
     60 const struct bootblk_command commands[] = {
     61 	{ "help",	command_help },
     62 	{ "?",		command_help },
     63 	{ "quit",	command_quit },
     64 	{ "boot",	command_boot },
     65 	{ NULL,		NULL },
     66 };
     67 
     68 #ifdef COMPAT_OLDBOOT
     69 int
     70 parsebootfile(const char *fname, char **fsname, char **devname,
     71     int *unit, int *partition, const char **file)
     72 {
     73 	return (EINVAL);
     74 }
     75 
     76 int
     77 biosdisk_gettype(struct open_file *f)
     78 {
     79 	return (0);
     80 }
     81 #endif
     82 
     83 static int
     84 bootit(const char *filename, int howto)
     85 {
     86 	if (exec_netbsd(filename, 0, howto) < 0)
     87 		printf("boot: %s\n", strerror(errno));
     88 	else
     89 		printf("boot returned\n");
     90 	return (-1);
     91 }
     92 
     93 static void
     94 print_banner(void)
     95 {
     96 	int base = getbasemem();
     97 	int ext = getextmem();
     98 
     99 	printf("\n"
    100 	       ">> %s, Revision %s\n"
    101 	       ">> (%s, %s)\n"
    102 	       ">> Memory: %d/%d k\n",
    103 	       bootprog_name, bootprog_rev,
    104 	       bootprog_maker, bootprog_date,
    105 	       base, ext);
    106 }
    107 
    108 int
    109 main(void)
    110 {
    111         char c;
    112 
    113 #ifdef SUPPORT_SERIAL
    114 	initio(SUPPORT_SERIAL);
    115 #else
    116 	initio(CONSDEV_PC);
    117 #endif
    118 	gateA20();
    119 
    120 	print_banner();
    121 
    122 	printf("Press return to boot now, any other key for boot menu\n");
    123 	printf("Starting in ");
    124 
    125 	c = awaitkey(TIMEOUT, 1);
    126 	if ((c != '\r') && (c != '\n') && (c != '\0')) {
    127 		printf("type \"?\" or \"help\" for help.\n");
    128 		bootmenu();	/* does not return */
    129 	}
    130 
    131 	/*
    132 	 * The file name provided here is just a default.  If the
    133 	 * DHCP server provides a file name, we'll use that instead.
    134 	 */
    135 	bootit("netbsd", 0);
    136 
    137 	/*
    138 	 * If that fails, let the BIOS try the next boot device.
    139 	 */
    140 	return (1);
    141 }
    142 
    143 /* ARGSUSED */
    144 void
    145 command_help(char *arg)
    146 {
    147 	printf("commands are:\n"
    148 	       "boot [filename] [-adsqv]\n"
    149 	       "     (ex. \"netbsd.old -s\"\n"
    150 	       "help|?\n"
    151 	       "quit\n");
    152 }
    153 
    154 /* ARGSUSED */
    155 void
    156 command_quit(char *arg)
    157 {
    158 	printf("Exiting... goodbye...\n");
    159 	exit(0);
    160 }
    161 
    162 void
    163 command_boot(char *arg)
    164 {
    165 	char *filename;
    166 	int howto;
    167 
    168 	if (parseboot(arg, &filename, &howto))
    169 		bootit(filename, howto);
    170 }
    171