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boot.c revision 1.4 
      1 /*	$NetBSD: boot.c,v 1.4 2018/09/03 00:04:02 jmcneill Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2016 Kimihiro Nonaka <nonaka (at) netbsd.org>
      5  * Copyright (c) 2018 Jared McNeill <jmcneill (at) invisible.ca>
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     27  * SUCH DAMAGE.
     28  */
     29 
     30 #include "efiboot.h"
     31 #include "efiblock.h"
     32 
     33 #include <sys/bootblock.h>
     34 #include <sys/boot_flag.h>
     35 #include <machine/limits.h>
     36 
     37 #include <loadfile.h>
     38 
     39 extern const char bootprog_name[], bootprog_rev[], bootprog_kernrev[];
     40 
     41 extern char twiddle_toggle;
     42 
     43 static const char * const names[][2] = {
     44 	{ "netbsd", "netbsd.gz" },
     45 	{ "onetbsd", "onetbsd.gz" },
     46 	{ "netbsd.old", "netbsd.old.gz" },
     47 };
     48 
     49 #define NUMNAMES	__arraycount(names)
     50 #define DEFFILENAME	names[0][0]
     51 
     52 #define	DEFTIMEOUT	5
     53 
     54 static char default_device[32];
     55 
     56 void	command_boot(char *);
     57 void	command_dev(char *);
     58 void	command_ls(char *);
     59 void	command_reset(char *);
     60 void	command_version(char *);
     61 void	command_quit(char *);
     62 
     63 const struct boot_command commands[] = {
     64 	{ "boot",	command_boot,		"boot [fsN:][filename] [args]\n     (ex. \"fs0:\\netbsd.old -s\"" },
     65 	{ "dev",	command_dev,		"dev" },
     66 	{ "ls",		command_ls,		"ls [hdNn:/path]" },
     67 	{ "version",	command_version,	"version" },
     68 	{ "help",	command_help,		"help|?" },
     69 	{ "?",		command_help,		NULL },
     70 	{ "quit",	command_quit,		"quit" },
     71 	{ NULL,		NULL },
     72 };
     73 
     74 void
     75 command_help(char *arg)
     76 {
     77 	int n;
     78 
     79 	printf("commands are:\n");
     80 	for (n = 0; commands[n].c_name; n++) {
     81 		if (commands[n].c_help)
     82 			printf("%s\n", commands[n].c_help);
     83 	}
     84 }
     85 
     86 void
     87 command_boot(char *arg)
     88 {
     89 	char *fname = arg;
     90 	char *bootargs = gettrailer(arg);
     91 
     92 	exec_netbsd(*fname ? fname : DEFFILENAME, bootargs);
     93 }
     94 
     95 void
     96 command_dev(char *arg)
     97 {
     98 	if (arg && *arg) {
     99 		set_default_device(arg);
    100 	} else {
    101 		efi_block_show();
    102 		efi_net_show();
    103 		efi_pxe_show();
    104 	}
    105 
    106 	if (strlen(default_device) > 0) {
    107 		printf("\n");
    108 		printf("default: %s\n", default_device);
    109 	}
    110 }
    111 
    112 void
    113 command_ls(char *arg)
    114 {
    115 	ls(arg);
    116 }
    117 
    118 void
    119 command_version(char *arg)
    120 {
    121 	char *ufirmware;
    122 	int rv;
    123 
    124 	printf("EFI version: %d.%02d\n",
    125 	    ST->Hdr.Revision >> 16, ST->Hdr.Revision & 0xffff);
    126 	ufirmware = NULL;
    127 	rv = ucs2_to_utf8(ST->FirmwareVendor, &ufirmware);
    128 	if (rv == 0) {
    129 		printf("EFI Firmware: %s (rev %d.%02d)\n", ufirmware,
    130 		    ST->FirmwareRevision >> 16,
    131 		    ST->FirmwareRevision & 0xffff);
    132 		FreePool(ufirmware);
    133 	}
    134 }
    135 
    136 void
    137 command_quit(char *arg)
    138 {
    139 	efi_exit();
    140 }
    141 
    142 int
    143 set_default_device(char *arg)
    144 {
    145 	if (strlen(arg) + 1 > sizeof(default_device))
    146 		return ERANGE;
    147 	strcpy(default_device, arg);
    148 	return 0;
    149 }
    150 
    151 char *
    152 get_default_device(void)
    153 {
    154 	return default_device;
    155 }
    156 
    157 void
    158 print_banner(void)
    159 {
    160 	printf("\n\n"
    161 	    ">> %s, Revision %s (from NetBSD %s)\n",
    162 	    bootprog_name, bootprog_rev, bootprog_kernrev);
    163 }
    164 
    165 void
    166 boot(void)
    167 {
    168 	int currname, c;
    169 
    170 	print_banner();
    171 
    172 	printf("Press return to boot now, any other key for boot prompt\n");
    173 	for (currname = 0; currname < NUMNAMES; currname++) {
    174 		printf("booting %s - starting in ", names[currname][0]);
    175 
    176 		c = awaitkey(DEFTIMEOUT, 1);
    177 		if ((c != '\r') && (c != '\n') && (c != '\0')) {
    178 			bootprompt(); /* does not return */
    179 		}
    180 
    181 		/*
    182 		 * try pairs of names[] entries, foo and foo.gz
    183 		 */
    184 		exec_netbsd(names[currname][0], "");
    185 		exec_netbsd(names[currname][1], "");
    186 	}
    187 
    188 	bootprompt();	/* does not return */
    189 }
    190