boot.c revision 1.4
1 /* $NetBSD: boot.c,v 1.4 2005/12/11 12:18:16 christos 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. 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 81 #include <machine/prom.h> 82 83 #include "common.h" 84 #include "bootinfo.h" 85 86 /* 87 * We won't go overboard with gzip'd kernel names. After all we can 88 * still boot a gzip'd kernel called "netbsd.mipsco" - it doesn't need 89 * the .gz suffix. 90 */ 91 char *kernelnames[] = { 92 "netbsd", 93 "netbsd.gz", 94 "netbsd.bak", 95 "netbsd.old", 96 "netbsd.mipsco", 97 "netbsd.elf", 98 NULL 99 }; 100 101 102 static char *devsplit __P((char *, char *)); 103 int main __P((int, char **)); 104 105 /* 106 * This gets arguments from the first stage boot lader, calls PROM routines 107 * to open and load the program to boot, and then transfers execution to 108 * that new program. 109 */ 110 int 111 main(argc, argv) 112 int argc; 113 char **argv; 114 { 115 char *name, **namep, *dev, *kernel; 116 char bootname[PATH_MAX], bootpath[PATH_MAX]; 117 int win; 118 u_long marks[MARK_MAX]; 119 struct btinfo_symtab bi_syms; 120 struct btinfo_bootpath bi_bpath; 121 extern void prom_init __P((void)); 122 void (*entry) __P((int, char **, char **, u_int, char *)); 123 124 prom_init(); 125 126 /* print a banner */ 127 printf("\n"); 128 printf("NetBSD/mipsco " NETBSD_VERS " " BOOT_TYPE_NAME 129 " Bootstrap, Revision %s\n", bootprog_rev); 130 printf("(%s, %s)\n\n", bootprog_maker, bootprog_date); 131 132 /* initialise bootinfo structure early */ 133 bi_init(BOOTINFO_ADDR); 134 135 dev = name = NULL; 136 if (argc > 1) { 137 kernel = devsplit(argv[1], bootname); 138 if (*bootname) { 139 dev = bootname; 140 if (*kernel) 141 name = argv[1]; 142 ++argv; 143 --argc; 144 } 145 146 } 147 if (dev == NULL) { 148 (void) devsplit(argv[0], bootname); 149 dev = bootname; 150 } 151 152 memset(marks, 0, sizeof marks); 153 if (name != NULL) 154 win = (loadfile(name, marks, LOAD_KERNEL) == 0); 155 else { 156 win = 0; 157 for (namep = kernelnames, win = 0; *namep != NULL && !win; 158 namep++) { 159 kernel = *namep; 160 strcpy(bootpath, dev); 161 strcat(bootpath, kernel); 162 printf("Loading: %s\n", bootpath); 163 win = (loadfile(bootpath, marks, LOAD_ALL) != -1); 164 if (win) { 165 name = bootpath; 166 } 167 } 168 } 169 if (!win) 170 goto fail; 171 172 strncpy(bi_bpath.bootpath, kernel, BTINFO_BOOTPATH_LEN); 173 bi_add(&bi_bpath, BTINFO_BOOTPATH, sizeof(bi_bpath)); 174 175 entry = (void *) marks[MARK_ENTRY]; 176 bi_syms.nsym = marks[MARK_NSYM]; 177 bi_syms.ssym = marks[MARK_SYM]; 178 bi_syms.esym = marks[MARK_END]; 179 bi_add(&bi_syms, BTINFO_SYMTAB, sizeof(bi_syms)); 180 181 printf("Starting at 0x%x\n\n", (u_int)entry); 182 183 (*entry)(argc, argv, NULL, BOOTINFO_MAGIC, (char *)BOOTINFO_ADDR); 184 185 (void)printf("KERNEL RETURNED!\n"); 186 187 fail: 188 (void)printf("Boot failed! Halting...\n"); 189 return (0); 190 } 191 192 /* 193 * strip out device name and kernel name 194 */ 195 static char * 196 devsplit(fname, devname) 197 char *fname, *devname; 198 { 199 char *src, *dst; 200 201 dst = devname; 202 for (src = fname; *src;/**/) 203 if ((*dst++ = *src++) == ')') { 204 *dst = (char) 0; 205 return src; 206 } 207 *devname = (char) 0; 208 return fname; 209 } 210
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