1 /* $NetBSD: bootxx.c,v 1.9 2009/03/14 21:04:12 dsl Exp $ */ 2 3 /*- 4 * Copyright (c) 1999, 2000 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1992, 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * This code is derived from software contributed to Berkeley by 37 * Ralph Campbell. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 * 63 * @(#)boot.c 8.1 (Berkeley) 6/10/93 64 */ 65 66 #include <sys/param.h> 67 #include <sys/exec_elf.h> 68 #include <lib/libsa/stand.h> 69 #include <machine/prom.h> 70 71 typedef void (*entrypt)(int, char **, int, const void *); 72 73 int main(int, char **); 74 entrypt loadfile(char *path, char *name); 75 76 /* 77 * This gets arguments from the PROM, calls other routines to open 78 * and load the secondary boot loader called boot, and then transfers 79 * execution to that program. 80 */ 81 int 82 main(int argc, char **argv) 83 { 84 entrypt entry; 85 char *cp; 86 extern void prom_init(void); 87 88 prom_init(); 89 90 cp = *argv; 91 92 printf("\nNetBSD/mipsco " NETBSD_VERS " " BOOTXX_FS_NAME " Primary Bootstrap\n"); 93 94 entry = loadfile(cp, "/boot"); 95 if ((int)entry != -1) 96 goto goodload; 97 98 entry = loadfile(cp, "/boot.mipsco"); 99 if ((int)entry != -1) 100 goto goodload; 101 102 goto bad; 103 104 goodload: 105 MIPS_PROM(flushcache)(); 106 entry(argc, argv, 0, 0); 107 108 bad: 109 return (1); 110 } 111 112 /* 113 * Open 'filename', read in program and return the entry point or -1 if error. 114 */ 115 entrypt 116 loadfile(char *path, char *name) 117 { 118 int fd, i; 119 char *src, *dst, bootfname[64]; 120 Elf32_Ehdr ehdr; 121 Elf32_Phdr phdr; 122 123 dst = bootfname; 124 for (src = path; *src;/**/) 125 if ((*dst++ = *src++) == ')') 126 break; 127 for (src = name; *src;/**/) 128 *dst++ = *src++; 129 *dst = (char) 0; 130 131 if ((fd = open(bootfname, 0)) < 0) { 132 printf("open %s: %d\n", bootfname, errno); 133 goto err; 134 } 135 136 /* read the exec header */ 137 i = read(fd, (char *)&ehdr, sizeof(ehdr)); 138 if ((i != sizeof(ehdr)) || 139 (memcmp(ehdr.e_ident, ELFMAG, SELFMAG) != 0) || 140 (ehdr.e_ident[EI_CLASS] != ELFCLASS32)) { 141 printf("%s: No ELF header\n", bootfname); 142 goto cerr; 143 } 144 145 for (i = 0; i < ehdr.e_phnum; i++) { 146 if (lseek(fd, (off_t) ehdr.e_phoff + i * sizeof(phdr), 0) < 0) 147 goto cerr; 148 if (read(fd, &phdr, sizeof(phdr)) != sizeof(phdr)) 149 goto cerr; 150 if (phdr.p_type != PT_LOAD) 151 continue; 152 if (lseek(fd, (off_t)phdr.p_offset, 0) < 0) 153 goto cerr; 154 if (read(fd, (char *)phdr.p_paddr, phdr.p_filesz) != phdr.p_filesz) 155 goto cerr; 156 } 157 return ((entrypt)ehdr.e_entry); 158 159 cerr: 160 #ifndef LIBSA_NO_FS_CLOSE 161 (void) close(fd); 162 #endif 163 err: 164 printf("Can't load '%s'\n", bootfname); 165 return ((entrypt)-1); 166 } 167
Indexes created Sat Sep 20 22:09:52 GMT 2025