boot.c revision 1.2
1 /* $NetBSD: boot.c,v 1.2 2000/09/26 09:48:35 wdk 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, Simon Burge and Wayne Knowles. 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. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by the University of 57 * California, Berkeley and its contributors. 58 * 4. Neither the name of the University nor the names of its contributors 59 * may be used to endorse or promote products derived from this software 60 * without specific prior written permission. 61 * 62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 65 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 72 * SUCH DAMAGE. 73 * 74 * @(#)boot.c 8.1 (Berkeley) 6/10/93 75 */ 76 77 #include <lib/libsa/stand.h> 78 #include <lib/libsa/loadfile.h> 79 #include <lib/libkern/libkern.h> 80 81 #include <sys/param.h> 82 #include <sys/exec.h> 83 #include <sys/exec_elf.h> 84 85 #include <machine/prom.h> 86 87 #include "common.h" 88 #include "bootinfo.h" 89 90 /* 91 * We won't go overboard with gzip'd kernel names. After all we can 92 * still boot a gzip'd kernel called "netbsd.mipsco" - it doesn't need 93 * the .gz suffix. 94 */ 95 char *kernelnames[] = { 96 "netbsd", 97 "netbsd.gz", 98 "netbsd.bak", 99 "netbsd.old", 100 "netbsd.mipsco", 101 "netbsd.elf", 102 NULL 103 }; 104 105 106 static char *devsplit __P((char *, char *)); 107 int main __P((int, char **)); 108 109 /* 110 * This gets arguments from the first stage boot lader, calls PROM routines 111 * to open and load the program to boot, and then transfers execution to 112 * that new program. 113 */ 114 int 115 main(argc, argv) 116 int argc; 117 char **argv; 118 { 119 char *name, **namep, *dev, *kernel; 120 char bootname[PATH_MAX], bootpath[PATH_MAX]; 121 int win; 122 u_long marks[MARK_MAX]; 123 struct btinfo_symtab bi_syms; 124 struct btinfo_bootpath bi_bpath; 125 extern void prom_init __P((void)); 126 void (*entry) __P((int, char **, char **, u_int, char *)); 127 128 prom_init(); 129 130 /* print a banner */ 131 printf("\n"); 132 printf("NetBSD/mipsco " NETBSD_VERS " " BOOT_TYPE_NAME 133 " Bootstrap, Revision %s\n", bootprog_rev); 134 printf("(%s, %s)\n\n", bootprog_maker, bootprog_date); 135 136 /* initialise bootinfo structure early */ 137 bi_init(BOOTINFO_ADDR); 138 139 dev = name = NULL; 140 if (argc > 1) { 141 kernel = devsplit(argv[1], bootname); 142 if (*bootname) { 143 dev = bootname; 144 if (*kernel) 145 name = argv[1]; 146 ++argv; 147 --argc; 148 } 149 150 } 151 if (dev == NULL) { 152 (void) devsplit(argv[0], bootname); 153 dev = bootname; 154 } 155 156 memset(marks, 0, sizeof marks); 157 if (name != NULL) 158 win = (loadfile(name, marks, LOAD_KERNEL) == 0); 159 else { 160 win = 0; 161 for (namep = kernelnames, win = 0; *namep != NULL && !win; 162 namep++) { 163 kernel = *namep; 164 strcpy(bootpath, dev); 165 strcat(bootpath, kernel); 166 printf("Loading: %s\n", bootpath); 167 win = (loadfile(bootpath, marks, LOAD_ALL) != -1); 168 if (win) { 169 name = bootpath; 170 } 171 } 172 } 173 if (!win) 174 goto fail; 175 176 strncpy(bi_bpath.bootpath, kernel, BTINFO_BOOTPATH_LEN); 177 bi_add(&bi_bpath, BTINFO_BOOTPATH, sizeof(bi_bpath)); 178 179 entry = (void *) marks[MARK_ENTRY]; 180 bi_syms.nsym = marks[MARK_NSYM]; 181 bi_syms.ssym = marks[MARK_SYM]; 182 bi_syms.esym = marks[MARK_END]; 183 bi_add(&bi_syms, BTINFO_SYMTAB, sizeof(bi_syms)); 184 185 printf("Starting at 0x%x\n\n", (u_int)entry); 186 187 (*entry)(argc, argv, NULL, BOOTINFO_MAGIC, (char *)BOOTINFO_ADDR); 188 189 (void)printf("KERNEL RETURNED!\n"); 190 191 fail: 192 (void)printf("Boot failed! Halting...\n"); 193 return (0); 194 } 195 196 /* 197 * strip out device name and kernel name 198 */ 199 static char * 200 devsplit(fname, devname) 201 char *fname, *devname; 202 { 203 char *src, *dst; 204 205 dst = devname; 206 for (src = fname; *src;/**/) 207 if ((*dst++ = *src++) == ')') { 208 *dst = (char) 0; 209 return src; 210 } 211 *devname = (char) 0; 212 return fname; 213 } 214
Indexes created Sun Sep 21 19:09:51 GMT 2025