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main.c revision 1.4.4.2 
      1 /*	$NetBSD: main.c,v 1.4.4.2 2002/02/28 04:10:30 nathanw 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 int try_bootp = 1;
     49 
     50 extern char	bootprog_name[], bootprog_rev[], bootprog_date[],
     51 		bootprog_maker[];
     52 
     53 #define TIMEOUT 5
     54 
     55 int	main(void);
     56 
     57 void	command_help __P((char *));
     58 void	command_quit __P((char *));
     59 void	command_boot __P((char *));
     60 
     61 const struct bootblk_command commands[] = {
     62 	{ "help",	command_help },
     63 	{ "?",		command_help },
     64 	{ "quit",	command_quit },
     65 	{ "boot",	command_boot },
     66 	{ NULL,		NULL },
     67 };
     68 
     69 #ifdef COMPAT_OLDBOOT
     70 int
     71 parsebootfile(const char *fname, char **fsname, char **devname,
     72     u_int *unit, u_int *partition, const char **file)
     73 {
     74 	return (EINVAL);
     75 }
     76 
     77 int
     78 biosdisk_gettype(struct open_file *f)
     79 {
     80 	return (0);
     81 }
     82 #endif
     83 
     84 static int
     85 bootit(const char *filename, int howto)
     86 {
     87 	if (exec_netbsd(filename, 0, howto) < 0)
     88 		printf("boot: %s\n", strerror(errno));
     89 	else
     90 		printf("boot returned\n");
     91 	return (-1);
     92 }
     93 
     94 static void
     95 print_banner(void)
     96 {
     97 	int base = getbasemem();
     98 	int ext = getextmem();
     99 
    100 	printf("\n"
    101 	       ">> %s, Revision %s\n"
    102 	       ">> (%s, %s)\n"
    103 	       ">> Memory: %d/%d k\n",
    104 	       bootprog_name, bootprog_rev,
    105 	       bootprog_maker, bootprog_date,
    106 	       base, ext);
    107 }
    108 
    109 int
    110 main(void)
    111 {
    112         char c;
    113 
    114 #ifdef SUPPORT_SERIAL
    115 	initio(SUPPORT_SERIAL);
    116 #else
    117 	initio(CONSDEV_PC);
    118 #endif
    119 	gateA20();
    120 
    121 	print_banner();
    122 
    123 	printf("Press return to boot now, any other key for boot menu\n");
    124 	printf("Starting in ");
    125 
    126 	c = awaitkey(TIMEOUT, 1);
    127 	if ((c != '\r') && (c != '\n') && (c != '\0')) {
    128 		printf("type \"?\" or \"help\" for help.\n");
    129 		bootmenu();	/* does not return */
    130 	}
    131 
    132 	/*
    133 	 * The file name provided here is just a default.  If the
    134 	 * DHCP server provides a file name, we'll use that instead.
    135 	 */
    136 	bootit("netbsd", 0);
    137 
    138 	/*
    139 	 * If that fails, let the BIOS try the next boot device.
    140 	 */
    141 	return (1);
    142 }
    143 
    144 /* ARGSUSED */
    145 void
    146 command_help(char *arg)
    147 {
    148 	printf("commands are:\n"
    149 	       "boot [filename] [-adsqv]\n"
    150 	       "     (ex. \"netbsd.old -s\"\n"
    151 	       "help|?\n"
    152 	       "quit\n");
    153 }
    154 
    155 /* ARGSUSED */
    156 void
    157 command_quit(char *arg)
    158 {
    159 	printf("Exiting... goodbye...\n");
    160 	exit(0);
    161 }
    162 
    163 void
    164 command_boot(char *arg)
    165 {
    166 	char *filename;
    167 	int howto;
    168 
    169 	if (parseboot(arg, &filename, &howto))
    170 		bootit(filename, howto);
    171 }
    172