boot.c revision 1.15
1 /* $NetBSD: boot.c,v 1.15 2002/03/29 20:31:52 tsutsui Exp $ */ 2 3 /*- 4 * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 41 * Copyright (C) 1995, 1996 TooLs GmbH. 42 * All rights reserved. 43 * 44 * ELF support derived from NetBSD/alpha's boot loader, written 45 * by Christopher G. Demetriou. 46 * 47 * Redistribution and use in source and binary forms, with or without 48 * modification, are permitted provided that the following conditions 49 * are met: 50 * 1. Redistributions of source code must retain the above copyright 51 * notice, this list of conditions and the following disclaimer. 52 * 2. Redistributions in binary form must reproduce the above copyright 53 * notice, this list of conditions and the following disclaimer in the 54 * documentation and/or other materials provided with the distribution. 55 * 3. All advertising materials mentioning features or use of this software 56 * must display the following acknowledgement: 57 * This product includes software developed by TooLs GmbH. 58 * 4. The name of TooLs GmbH may not be used to endorse or promote products 59 * derived from this software without specific prior written permission. 60 * 61 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 62 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 63 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 64 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 65 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 66 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 67 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 68 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 69 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 70 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 71 */ 72 73 /* 74 * First try for the boot code 75 * 76 * Input syntax is: 77 * [promdev[{:|,}partition]]/[filename] [flags] 78 */ 79 80 #include <sys/param.h> 81 #include <sys/boot_flag.h> 82 83 #include <lib/libsa/stand.h> 84 #include <lib/libsa/loadfile.h> 85 #include <lib/libkern/libkern.h> 86 87 #include "ofdev.h" 88 #include "openfirm.h" 89 90 #ifdef DEBUG 91 # define DPRINTF printf 92 #else 93 # define DPRINTF while (0) printf 94 #endif 95 96 char bootdev[128]; 97 char bootfile[128]; 98 int boothowto; 99 100 static ofw_version = 0; 101 static char *kernels[] = { "/netbsd", "/netbsd.gz", "/netbsd.macppc", NULL }; 102 103 static void 104 prom2boot(dev) 105 char *dev; 106 { 107 char *cp; 108 109 cp = dev + strlen(dev) - 1; 110 for (; *cp; cp--) { 111 if (*cp == ':') { 112 if (ofw_version < 3) { 113 /* sd@0:0 -> sd@0 */ 114 *cp = 0; 115 break; 116 } else { 117 /* disk@0:5,boot -> disk@0:0 */ 118 strcpy(cp, ":0"); 119 break; 120 } 121 } 122 } 123 } 124 125 static void 126 parseargs(str, howtop) 127 char *str; 128 int *howtop; 129 { 130 char *cp; 131 132 /* Allow user to drop back to the PROM. */ 133 if (strcmp(str, "exit") == 0) 134 OF_exit(); 135 136 *howtop = 0; 137 138 cp = str; 139 if (*cp == '-') 140 goto found; 141 for (cp = str; *cp; cp++) 142 if (*cp == ' ') 143 goto found; 144 return; 145 146 found: 147 *cp++ = 0; 148 while (*cp) 149 BOOT_FLAG(*cp++, *howtop); 150 } 151 152 static void 153 chain(entry, args, ssym, esym) 154 void (*entry)(); 155 char *args; 156 void *ssym, *esym; 157 { 158 extern char end[]; 159 int l; 160 161 /* 162 * Stash pointer to end of symbol table after the argument 163 * strings. 164 */ 165 l = strlen(args) + 1; 166 memcpy(args + l, &ssym, sizeof(ssym)); 167 l += sizeof(ssym); 168 memcpy(args + l, &esym, sizeof(esym)); 169 l += sizeof(esym); 170 l += sizeof(int); /* XXX */ 171 172 OF_chain((void *)RELOC, end - (char *)RELOC, entry, args, l); 173 panic("chain"); 174 } 175 176 __dead void 177 _rtt() 178 { 179 180 OF_exit(); 181 } 182 183 void 184 main() 185 { 186 extern char bootprog_name[], bootprog_rev[], 187 bootprog_maker[], bootprog_date[]; 188 int chosen, options, openprom; 189 char bootline[512]; /* Should check size? */ 190 char *cp; 191 u_long marks[MARK_MAX]; 192 u_int32_t entry; 193 void *ssym, *esym; 194 195 printf("\n"); 196 printf(">> %s, Revision %s\n", bootprog_name, bootprog_rev); 197 printf(">> (%s, %s)\n", bootprog_maker, bootprog_date); 198 199 /* 200 * Figure out what version of Open Firmware... 201 */ 202 if ((openprom = OF_finddevice("/openprom")) != -1) { 203 char model[32]; 204 205 memset(model, 0, sizeof model); 206 OF_getprop(openprom, "model", model, sizeof model); 207 for (cp = model; *cp; cp++) 208 if (*cp >= '0' && *cp <= '9') { 209 ofw_version = *cp - '0'; 210 break; 211 } 212 DPRINTF(">> Open Firmware version %d.x\n", ofw_version); 213 } 214 215 /* 216 * Get the boot arguments from Openfirmware 217 */ 218 if ((chosen = OF_finddevice("/chosen")) == -1 || 219 OF_getprop(chosen, "bootpath", bootdev, sizeof bootdev) < 0 || 220 OF_getprop(chosen, "bootargs", bootline, sizeof bootline) < 0) { 221 printf("Invalid Openfirmware environment\n"); 222 OF_exit(); 223 } 224 225 /* 226 * Some versions of Openfirmware sets bootpath to "". 227 * We use boot-device instead if it occurs. 228 */ 229 if (bootdev[0] == 0) { 230 printf("Cannot use bootpath\n"); 231 if ((options = OF_finddevice("/options")) == -1 || 232 OF_getprop(options, "boot-device", bootdev, 233 sizeof bootdev) < 0) { 234 printf("Invalid Openfirmware environment\n"); 235 OF_exit(); 236 } 237 printf("Using boot-device instead\n"); 238 } 239 240 prom2boot(bootdev); 241 parseargs(bootline, &boothowto); 242 DPRINTF("bootline=%s\n", bootline); 243 244 for (;;) { 245 int i; 246 247 if (boothowto & RB_ASKNAME) { 248 printf("Boot: "); 249 gets(bootline); 250 parseargs(bootline, &boothowto); 251 } 252 253 if (bootline[0]) { 254 kernels[0] = bootline; 255 kernels[1] = NULL; 256 } 257 258 for (i = 0; kernels[i]; i++) { 259 DPRINTF("Trying %s\n", kernels[i]); 260 261 marks[MARK_START] = 0; 262 if (loadfile(kernels[i], marks, LOAD_KERNEL) >= 0) 263 goto loaded; 264 } 265 boothowto |= RB_ASKNAME; 266 } 267 loaded: 268 269 #ifdef __notyet__ 270 OF_setprop(chosen, "bootpath", opened_name, strlen(opened_name) + 1); 271 cp = bootline; 272 #else 273 strcpy(bootline, opened_name); 274 cp = bootline + strlen(bootline); 275 *cp++ = ' '; 276 #endif 277 *cp = '-'; 278 if (boothowto & RB_ASKNAME) 279 *++cp = 'a'; 280 if (boothowto & RB_SINGLE) 281 *++cp = 's'; 282 if (boothowto & RB_KDB) 283 *++cp = 'd'; 284 if (*cp == '-') 285 #ifdef __notyet__ 286 *cp = 0; 287 #else 288 *--cp = 0; 289 #endif 290 else 291 *++cp = 0; 292 #ifdef __notyet__ 293 OF_setprop(chosen, "bootargs", bootline, strlen(bootline) + 1); 294 #endif 295 296 entry = marks[MARK_ENTRY]; 297 ssym = (void *)marks[MARK_SYM]; 298 esym = (void *)marks[MARK_END]; 299 300 printf(" start=0x%x\n", entry); 301 __syncicache((void *)entry, (u_int)ssym - (u_int)entry); 302 chain((void *)entry, bootline, ssym, esym); 303 304 OF_exit(); 305 } 306
Indexes created Mon Oct 13 21:09:55 GMT 2025