boot.c revision 1.1
1 /* $NetBSD: boot.c,v 1.1 2000/09/18 11:40:48 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 *devname __P((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 if (*(int *)argv[0] == *(int *)"boot" && argc > 1) { 131 argc--; 132 argv++; 133 } 134 135 /* print a banner */ 136 printf("\n"); 137 printf("NetBSD/mipsco " NETBSD_VERS " " BOOT_TYPE_NAME " Bootstrap, Revision %s\n", 138 bootprog_rev); 139 printf("(%s, %s)\n", bootprog_maker, bootprog_date); 140 printf("\n"); 141 142 /* initialise bootinfo structure early */ 143 bi_init(BOOTINFO_ADDR); 144 145 if (strcmp(argv[0], "boot") == 0) { 146 argc--; 147 argv++; 148 } 149 name = argv[0]; 150 printf("Boot: %s\n", name); 151 152 /* NOTE: devname() can modify bootname[]. */ 153 strcpy(bootname, argv[0]); 154 if ((kernel = devname(bootname)) == NULL) { 155 dev = bootname; 156 name = NULL; 157 } 158 159 memset(marks, 0, sizeof marks); 160 if (name != NULL) 161 win = (loadfile(name, marks, LOAD_KERNEL) == 0); 162 else { 163 win = 0; 164 for (namep = kernelnames, win = 0; *namep != NULL && !win; 165 namep++) { 166 kernel = *namep; 167 strcpy(bootpath, dev); 168 strcat(bootpath, kernel); 169 printf("Loading: %s\n", bootpath); 170 win = (loadfile(bootpath, marks, LOAD_ALL) != -1); 171 if (win) { 172 name = bootpath; 173 } 174 } 175 } 176 if (!win) 177 goto fail; 178 179 strncpy(bi_bpath.bootpath, kernel, BTINFO_BOOTPATH_LEN); 180 bi_add(&bi_bpath, BTINFO_BOOTPATH, sizeof(bi_bpath)); 181 182 entry = (void *) marks[MARK_ENTRY]; 183 bi_syms.nsym = marks[MARK_NSYM]; 184 bi_syms.ssym = marks[MARK_SYM]; 185 bi_syms.esym = marks[MARK_END]; 186 bi_add(&bi_syms, BTINFO_SYMTAB, sizeof(bi_syms)); 187 188 printf("Starting at 0x%x\n\n", (u_int)entry); 189 190 (*entry)(argc, argv, NULL, BOOTINFO_MAGIC, (char *)BOOTINFO_ADDR); 191 192 (void)printf("KERNEL RETURNED!\n"); 193 194 fail: 195 (void)printf("Boot failed! Halting...\n"); 196 return (0); 197 } 198 199 /* 200 * Check whether or not fname is a device name only or a full 201 * bootpath including the kernel name. This code to do this 202 * is copied from loadfile() in the first stage bootblocks. 203 * Returns the kernel name, or NULL if no kernel name specified. 204 */ 205 static char * 206 devname(fname) 207 char *fname; 208 { 209 char c; 210 211 while ((c = *fname++) != '\0') { 212 if (c == ')') 213 break; 214 if (c != '/') 215 continue; 216 while ((c = *fname++) != '\0') 217 if (c == '/') 218 break; 219 /* 220 * Make "N/rzY" with no trailing '/' valid by adding 221 * the extra '/' before appending 'boot.mipsco' to the path. 222 */ 223 if (c != '/') { 224 fname--; 225 *fname++ = '/'; 226 *fname = '\0'; 227 } 228 break; 229 } 230 return (*fname == '\0' ? NULL : fname); 231 } 232
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