1 /* $NetBSD: main.c,v 1.32 2021/09/07 11:41:32 nia 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 <sys/types.h> 40 #include <sys/reboot.h> 41 #include <sys/bootblock.h> 42 43 #include <lib/libkern/libkern.h> 44 45 #include <lib/libsa/stand.h> 46 #include <lib/libsa/bootcfg.h> 47 48 #include <libi386.h> 49 #include <bootmenu.h> 50 #include <bootmod.h> 51 #include "pxeboot.h" 52 #include "vbe.h" 53 54 extern struct x86_boot_params boot_params; 55 56 int errno; 57 int debug; 58 59 extern char bootprog_name[], bootprog_rev[], bootprog_kernrev[]; 60 61 int main(void); 62 63 void command_help(char *); 64 void command_quit(char *); 65 void command_boot(char *); 66 void command_consdev(char *); 67 void command_modules(char *); 68 void command_multiboot(char *); 69 70 const struct bootblk_command commands[] = { 71 { "help", command_help }, 72 { "?", command_help }, 73 { "quit", command_quit }, 74 { "boot", command_boot }, 75 { "consdev", command_consdev }, 76 { "modules", command_modules }, 77 { "multiboot", command_multiboot }, 78 { "load", module_add }, 79 { "vesa", command_vesa }, 80 { "userconf", userconf_add }, 81 { NULL, NULL }, 82 }; 83 84 static void 85 clearit(void) 86 { 87 88 if (bootcfg_info.clear) 89 clear_pc_screen(); 90 } 91 92 static void 93 alldone(void) 94 { 95 pxe_fini(); 96 clearit(); 97 } 98 99 static int 100 bootit(const char *filename, int howto) 101 { 102 if (exec_netbsd(filename, 0, howto, 0, alldone) < 0) 103 printf("boot: %s\n", strerror(errno)); 104 else 105 printf("boot returned\n"); 106 return (-1); 107 } 108 109 int 110 main(void) 111 { 112 extern char twiddle_toggle; 113 char c; 114 115 twiddle_toggle = 1; /* no twiddling until we're ready */ 116 117 #ifdef SUPPORT_SERIAL 118 initio(SUPPORT_SERIAL); 119 #else 120 initio(CONSDEV_PC); 121 #endif 122 gateA20(); 123 boot_modules_enabled = !(boot_params.bp_flags 124 & X86_BP_FLAGS_NOMODULES); 125 126 #ifndef SMALL 127 if (!(boot_params.bp_flags & X86_BP_FLAGS_NOBOOTCONF)) { 128 parsebootconf(BOOTCFG_FILENAME); 129 } else { 130 bootcfg_info.timeout = boot_params.bp_timeout; 131 } 132 133 /* 134 * If console set in boot.cfg, switch to it. 135 * This will print the banner, so we don't need to explicitly do it 136 */ 137 if (bootcfg_info.consdev) { 138 command_consdev(bootcfg_info.consdev); 139 } else { 140 clearit(); 141 print_bootcfg_banner(bootprog_name, bootprog_rev); 142 } 143 144 /* Display the menu, if applicable */ 145 twiddle_toggle = 0; 146 if (bootcfg_info.nummenu > 0) { 147 /* Does not return */ 148 doboottypemenu(); 149 } 150 #else 151 twiddle_toggle = 0; 152 clearit(); 153 print_bootcfg_banner(bootprog_name, bootprog_rev); 154 #endif 155 156 printf("Press return to boot now, any other key for boot menu\n"); 157 printf("booting netbsd - starting in "); 158 159 #ifdef SMALL 160 c = awaitkey(boot_params.bp_timeout, 1); 161 #else 162 c = awaitkey((bootcfg_info.timeout < 0) ? 0 : bootcfg_info.timeout, 1); 163 #endif 164 if ((c != '\r') && (c != '\n') && (c != '\0') && 165 ((boot_params.bp_flags & X86_BP_FLAGS_PASSWORD) == 0 166 || check_password((char *)boot_params.bp_password))) { 167 printf("type \"?\" or \"help\" for help.\n"); 168 bootmenu(); /* does not return */ 169 } 170 171 /* 172 * The file name provided here is just a default. If the 173 * DHCP server provides a file name, we'll use that instead. 174 */ 175 bootit("netbsd", 0); 176 177 /* 178 * If that fails, let the BIOS try the next boot device. 179 */ 180 return (1); 181 } 182 183 /* ARGSUSED */ 184 void 185 command_help(char *arg) 186 { 187 printf("commands are:\n" 188 "boot [filename] [-acdsqv]\n" 189 " (ex. \"netbsd.old -s\"\n" 190 "consdev {pc|com[0123]|com[0123]kbd|auto}\n" 191 "vesa {modenum|on|off|enabled|disabled|list}\n" 192 "multiboot [filename] [<args>]\n" 193 "modules {on|off|enabled|disabled}\n" 194 "load {path_to_module}\n" 195 "userconf {command}\n" 196 "help|?\n" 197 "quit\n"); 198 } 199 200 /* ARGSUSED */ 201 void 202 command_quit(char *arg) 203 { 204 205 printf("Exiting...\n"); 206 delay(1000000); 207 reboot(); 208 /* Note: we shouldn't get to this point! */ 209 panic("Could not reboot!"); 210 } 211 212 void 213 command_boot(char *arg) 214 { 215 char *filename; 216 int howto; 217 218 if (parseboot(arg, &filename, &howto)) 219 bootit(filename, howto); 220 } 221 222 static const struct cons_devs { 223 const char *name; 224 u_int tag; 225 } cons_devs[] = { 226 { "pc", CONSDEV_PC }, 227 { "com0", CONSDEV_COM0 }, 228 { "com1", CONSDEV_COM1 }, 229 { "com2", CONSDEV_COM2 }, 230 { "com3", CONSDEV_COM3 }, 231 { "com0kbd", CONSDEV_COM0KBD }, 232 { "com1kbd", CONSDEV_COM1KBD }, 233 { "com2kbd", CONSDEV_COM2KBD }, 234 { "com3kbd", CONSDEV_COM3KBD }, 235 { "auto", CONSDEV_AUTO }, 236 { 0, 0 } }; 237 238 void 239 command_consdev(char *arg) 240 { 241 const struct cons_devs *cdp; 242 243 for (cdp = cons_devs; cdp->name; cdp++) { 244 if (!strcmp(arg, cdp->name)) { 245 initio(cdp->tag); 246 clearit(); 247 print_bootcfg_banner(bootprog_name, bootprog_rev); 248 return; 249 } 250 } 251 printf("invalid console device.\n"); 252 } 253 void 254 command_modules(char *arg) 255 { 256 if (strcmp(arg, "enabled") == 0 || 257 strcmp(arg, "on") == 0) 258 boot_modules_enabled = true; 259 else if (strcmp(arg, "disabled") == 0 || 260 strcmp(arg, "off") == 0) 261 boot_modules_enabled = false; 262 else 263 printf("invalid flag, must be 'enabled' or 'disabled'.\n"); 264 } 265 266 void 267 command_multiboot(char *arg) 268 { 269 char *filename; 270 271 filename = arg; 272 if (exec_multiboot(filename, gettrailer(arg)) < 0) 273 printf("multiboot: %s: %s\n", filename, 274 strerror(errno)); 275 else 276 printf("boot returned\n"); 277 } 278