boot.c revision 1.13
1 /* $NetBSD: boot.c,v 1.13 2008/01/26 14:35:24 tsutsui Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jonathan Stone, Michael Hitch and Simon Burge. 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) 1992, 1993 41 * The Regents of the University of California. All rights reserved. 42 * 43 * This code is derived from software contributed to Berkeley by 44 * Ralph Campbell. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 * 70 * @(#)boot.c 8.1 (Berkeley) 6/10/93 71 */ 72 73 #include <lib/libsa/stand.h> 74 #include <lib/libsa/loadfile.h> 75 #include <lib/libkern/libkern.h> 76 77 #include <sys/param.h> 78 #include <sys/exec.h> 79 #include <sys/exec_elf.h> 80 #include <sys/boot_flag.h> 81 82 #include <dev/arcbios/arcbios.h> 83 84 #include "common.h" 85 #include "bootinfo.h" 86 87 /* 88 * We won't go overboard with gzip'd kernel names. After all we can 89 * still boot a gzip'd kernel called "netbsd.sgimips" - it doesn't need 90 * the .gz suffix. 91 * 92 * For arcane reasons, the first byte of the first element of this struct will 93 * contain a zero. We therefore start from one. 94 */ 95 96 char *kernelnames[] = { 97 "placekeeper", 98 "netbsd.sgimips", 99 "netbsd", 100 "netbsd.gz", 101 "netbsd.bak", 102 "netbsd.old", 103 "onetbsd", 104 "gennetbsd", 105 NULL 106 }; 107 108 extern const struct arcbios_fv *ARCBIOS; 109 static int debug = 0; 110 111 int main(int, char **); 112 113 /* Storage must be static. */ 114 struct btinfo_symtab bi_syms; 115 struct btinfo_bootpath bi_bpath; 116 117 static uint8_t bootinfo[BOOTINFO_SIZE]; 118 119 /* 120 * This gets arguments from the ARCS monitor, calls ARCS routines to open 121 * and load the program to boot, then transfers execution to the new program. 122 * 123 * argv[0] will be the ARCS path to the bootloader (i.e., 124 * "pci(0)scsi(0)disk(2)rdisk(0)partition(8)/boot.ip3"). 125 * 126 * argv[1] through argv[n] will contain arguments passed from the PROM, if any. 127 */ 128 129 int 130 main(int argc, char **argv) 131 { 132 const char *kernel = NULL; 133 const char *bootpath = NULL; 134 char bootfile[PATH_MAX]; 135 void (*entry) (int, char *[], int, void *); 136 u_long marks[MARK_MAX]; 137 int win = 0; 138 int i; 139 int ch; 140 141 /* print a banner */ 142 printf("\n"); 143 printf("NetBSD/sgimips " NETBSD_VERS " Bootstrap, Revision %s\n", 144 bootprog_rev); 145 printf("(%s, %s)\n", bootprog_maker, bootprog_date); 146 printf("\n"); 147 148 memset(marks, 0, sizeof marks); 149 150 /* initialise bootinfo structure early */ 151 bi_init(bootinfo); 152 153 /* Parse arguments, if present. */ 154 155 while ((ch = getopt(argc, argv, "v")) != -1) { 156 switch (ch) { 157 case 'v': 158 debug = 1; 159 break; 160 } 161 } 162 163 /* 164 * How to find partition and file to load? 165 * 166 * If argv[0] contains the string "cdrom(", we're probably doing an 167 * install. The bootpath will therefore be partition 0 of whatever 168 * device we've booted from. Derive the install kernel name from 169 * the bootloader name ("ip32boot", "ip22boot", or "aoutboot"). 170 */ 171 172 if (strstr(argv[0], "cdrom(")) 173 { 174 strcpy(bootfile, argv[0]); 175 i = (strrchr(bootfile, ')') - bootfile); 176 bootfile[i-1] = '0'; 177 if (strstr(bootfile, "ip3x")) 178 sprintf( (strrchr(bootfile, ')') + 1), "ip3x"); 179 else 180 sprintf( (strrchr(bootfile, ')') + 1), "ip2x"); 181 if ( (loadfile(bootfile, marks, LOAD_KERNEL)) >= 0 ) 182 goto finish; 183 } 184 185 bootpath = ARCBIOS->GetEnvironmentVariable("OSLoadPartition"); 186 187 if (bootpath == NULL) { 188 /* XXX need to actually do the fixup */ 189 printf("\nPlease set the OSLoadPartition environment variable.\n"); 190 return 0; 191 } 192 193 /* 194 * Grab OSLoadFilename from ARCS. 195 */ 196 197 kernel = ARCBIOS->GetEnvironmentVariable("OSLoadFilename"); 198 199 /* 200 * argv[1] is assumed to contain the name of the kernel to boot, 201 * if it a) does not start with a hyphen and b) does not contain 202 * an equals sign. 203 */ 204 205 if (((strchr(argv[1], '=')) == NULL) && (argv[1][0] != '-')) 206 kernel = argv[1]; 207 208 if (kernel != NULL) { 209 /* 210 * if the name contains parenthesis, we assume that it 211 * contains the bootpath and ignore anything passed through 212 * the environment 213 */ 214 if (strchr(kernel, '(')) 215 win = loadfile(kernel, marks, LOAD_KERNEL); 216 else { 217 strcpy(bootfile, bootpath); 218 strcat(bootfile, kernel); 219 win = loadfile(bootfile, marks, LOAD_KERNEL); 220 } 221 222 } else { 223 i = 1; 224 while (kernelnames[i] != NULL) { 225 strcpy(bootfile, bootpath); 226 strcat(bootfile, kernelnames[i]); 227 kernel = kernelnames[i]; 228 win = loadfile(bootfile, marks, LOAD_KERNEL); 229 if (win != -1) 230 break; 231 i++; 232 } 233 234 } 235 236 if (win < 0) { 237 printf("Boot failed! Halting...\n"); 238 return 0; 239 } 240 241 finish: 242 strlcpy(bi_bpath.bootpath, kernel, BTINFO_BOOTPATH_LEN); 243 bi_add(&bi_bpath, BTINFO_BOOTPATH, sizeof(bi_bpath)); 244 245 bi_syms.nsym = marks[MARK_NSYM]; 246 bi_syms.ssym = marks[MARK_SYM]; 247 bi_syms.esym = marks[MARK_END]; 248 bi_add(&bi_syms, BTINFO_SYMTAB, sizeof(bi_syms)); 249 entry = (void *)marks[MARK_ENTRY]; 250 251 if (debug) { 252 printf("Starting at %p\n\n", entry); 253 printf("nsym 0x%lx ssym 0x%lx esym 0x%lx\n", marks[MARK_NSYM], 254 marks[MARK_SYM], marks[MARK_END]); 255 } 256 (*entry)(argc, argv, BOOTINFO_MAGIC, bootinfo); 257 258 printf("Kernel returned! Halting...\n"); 259 return (0); 260 } 261
Indexes created Sat Sep 20 22:09:52 GMT 2025