bootxx.c revision 1.1.2.2
1 1.1.2.2 bouyer /* $NetBSD: bootxx.c,v 1.1.2.2 2011/02/08 18:05:10 bouyer Exp $ */ 2 1.1.2.2 bouyer 3 1.1.2.2 bouyer /*- 4 1.1.2.2 bouyer * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 1.1.2.2 bouyer * All rights reserved. 6 1.1.2.2 bouyer * 7 1.1.2.2 bouyer * This code is derived from software contributed to The NetBSD Foundation 8 1.1.2.2 bouyer * by Jonathan Stone, Michael Hitch and Simon Burge. 9 1.1.2.2 bouyer * 10 1.1.2.2 bouyer * Redistribution and use in source and binary forms, with or without 11 1.1.2.2 bouyer * modification, are permitted provided that the following conditions 12 1.1.2.2 bouyer * are met: 13 1.1.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 14 1.1.2.2 bouyer * notice, this list of conditions and the following disclaimer. 15 1.1.2.2 bouyer * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.2.2 bouyer * notice, this list of conditions and the following disclaimer in the 17 1.1.2.2 bouyer * documentation and/or other materials provided with the distribution. 18 1.1.2.2 bouyer * 3. All advertising materials mentioning features or use of this software 19 1.1.2.2 bouyer * must display the following acknowledgement: 20 1.1.2.2 bouyer * This product includes software developed by the NetBSD 21 1.1.2.2 bouyer * Foundation, Inc. and its contributors. 22 1.1.2.2 bouyer * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.1.2.2 bouyer * contributors may be used to endorse or promote products derived 24 1.1.2.2 bouyer * from this software without specific prior written permission. 25 1.1.2.2 bouyer * 26 1.1.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.1.2.2 bouyer * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.1.2.2 bouyer * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.1.2.2 bouyer * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.1.2.2 bouyer * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.1.2.2 bouyer * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.1.2.2 bouyer * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.1.2.2 bouyer * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.1.2.2 bouyer * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.1.2.2 bouyer * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.1.2.2 bouyer * POSSIBILITY OF SUCH DAMAGE. 37 1.1.2.2 bouyer */ 38 1.1.2.2 bouyer 39 1.1.2.2 bouyer /* 40 1.1.2.2 bouyer * Copyright (c) 1992, 1993 41 1.1.2.2 bouyer * The Regents of the University of California. All rights reserved. 42 1.1.2.2 bouyer * 43 1.1.2.2 bouyer * This code is derived from software contributed to Berkeley by 44 1.1.2.2 bouyer * Ralph Campbell. 45 1.1.2.2 bouyer * 46 1.1.2.2 bouyer * Redistribution and use in source and binary forms, with or without 47 1.1.2.2 bouyer * modification, are permitted provided that the following conditions 48 1.1.2.2 bouyer * are met: 49 1.1.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 50 1.1.2.2 bouyer * notice, this list of conditions and the following disclaimer. 51 1.1.2.2 bouyer * 2. Redistributions in binary form must reproduce the above copyright 52 1.1.2.2 bouyer * notice, this list of conditions and the following disclaimer in the 53 1.1.2.2 bouyer * documentation and/or other materials provided with the distribution. 54 1.1.2.2 bouyer * 3. Neither the name of the University nor the names of its contributors 55 1.1.2.2 bouyer * may be used to endorse or promote products derived from this software 56 1.1.2.2 bouyer * without specific prior written permission. 57 1.1.2.2 bouyer * 58 1.1.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 1.1.2.2 bouyer * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 1.1.2.2 bouyer * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 1.1.2.2 bouyer * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 1.1.2.2 bouyer * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 1.1.2.2 bouyer * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 1.1.2.2 bouyer * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 1.1.2.2 bouyer * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 1.1.2.2 bouyer * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 1.1.2.2 bouyer * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 1.1.2.2 bouyer * SUCH DAMAGE. 69 1.1.2.2 bouyer * 70 1.1.2.2 bouyer * @(#)boot.c 8.1 (Berkeley) 6/10/93 71 1.1.2.2 bouyer */ 72 1.1.2.2 bouyer 73 1.1.2.2 bouyer #include <sys/param.h> 74 1.1.2.2 bouyer #include <sys/exec_elf.h> 75 1.1.2.2 bouyer #include <lib/libsa/stand.h> 76 1.1.2.2 bouyer #include <lib/libkern/libkern.h> 77 1.1.2.2 bouyer 78 1.1.2.2 bouyer typedef void (entrypt) (int, char **, int, const void *, int, char *); 79 1.1.2.2 bouyer 80 1.1.2.2 bouyer entrypt main; 81 1.1.2.2 bouyer entrypt *loadfile (char *path, char *name); 82 1.1.2.2 bouyer 83 1.1.2.2 bouyer /* 84 1.1.2.2 bouyer * This gets arguments from the PROM, calls other routines to open 85 1.1.2.2 bouyer * and load the secondary boot loader called boot, and then transfers 86 1.1.2.2 bouyer * execution to that program. 87 1.1.2.2 bouyer */ 88 1.1.2.2 bouyer void 89 1.1.2.2 bouyer main(int argc, char **argv, int code, const void *cv, int bim, char *bip) 90 1.1.2.2 bouyer { 91 1.1.2.2 bouyer char *cp; 92 1.1.2.2 bouyer entrypt *entry; 93 1.1.2.2 bouyer 94 1.1.2.2 bouyer cp = *argv; 95 1.1.2.2 bouyer 96 1.1.2.2 bouyer printf("\nNetBSD/emips " NETBSD_VERS " " BOOTXX_FS_NAME " Bootstrap\n"); 97 1.1.2.2 bouyer 98 1.1.2.2 bouyer entry = loadfile(cp, "netbsd"); 99 1.1.2.2 bouyer if ((int)entry != -1) 100 1.1.2.2 bouyer goto goodload; 101 1.1.2.2 bouyer 102 1.1.2.2 bouyer /* Give old /boot a go... */ 103 1.1.2.2 bouyer entry = loadfile(cp, "/boot"); 104 1.1.2.2 bouyer if ((int)entry != -1) 105 1.1.2.2 bouyer goto goodload; 106 1.1.2.2 bouyer 107 1.1.2.2 bouyer goto bad; 108 1.1.2.2 bouyer goodload: 109 1.1.2.2 bouyer 110 1.1.2.2 bouyer entry(argc, argv, code, cv, bim, bip); 111 1.1.2.2 bouyer bad: 112 1.1.2.2 bouyer printf("Boot failed.\n"); 113 1.1.2.2 bouyer } 114 1.1.2.2 bouyer 115 1.1.2.2 bouyer /* 116 1.1.2.2 bouyer * Open 'filename', read in program and return the entry point or -1 if error. 117 1.1.2.2 bouyer */ 118 1.1.2.2 bouyer entrypt * 119 1.1.2.2 bouyer loadfile(char *path, char *name) 120 1.1.2.2 bouyer { 121 1.1.2.2 bouyer int fd, i; 122 1.1.2.2 bouyer char c, *buf, bootfname[64]; 123 1.1.2.2 bouyer Elf32_Ehdr ehdr; 124 1.1.2.2 bouyer Elf32_Phdr phdr; 125 1.1.2.2 bouyer 126 1.1.2.2 bouyer strcpy(bootfname, path); 127 1.1.2.2 bouyer buf = bootfname; 128 1.1.2.2 bouyer while ((c = *buf++) != '\0') { 129 1.1.2.2 bouyer if (c == ')') 130 1.1.2.2 bouyer break; 131 1.1.2.2 bouyer if (c != '/') 132 1.1.2.2 bouyer continue; 133 1.1.2.2 bouyer while ((c = *buf++) != '\0') 134 1.1.2.2 bouyer if (c == '/') 135 1.1.2.2 bouyer break; 136 1.1.2.2 bouyer /* 137 1.1.2.2 bouyer * Make "N/rzY" with no trailing '/' valid by adding 138 1.1.2.2 bouyer * the extra '/' before appending 'bootemips' to the path. 139 1.1.2.2 bouyer */ 140 1.1.2.2 bouyer if (c != '/') { 141 1.1.2.2 bouyer buf--; 142 1.1.2.2 bouyer *buf++ = '/'; 143 1.1.2.2 bouyer *buf = '\0'; 144 1.1.2.2 bouyer } 145 1.1.2.2 bouyer break; 146 1.1.2.2 bouyer } 147 1.1.2.2 bouyer strcpy(buf, name); 148 1.1.2.2 bouyer if ((fd = open(bootfname, 0)) < 0) { 149 1.1.2.2 bouyer printf("open %s: %d\n", bootfname, errno); 150 1.1.2.2 bouyer goto err; 151 1.1.2.2 bouyer } 152 1.1.2.2 bouyer 153 1.1.2.2 bouyer /* read the exec header */ 154 1.1.2.2 bouyer i = read(fd, (char *)&ehdr, sizeof(ehdr)); 155 1.1.2.2 bouyer if ((i != sizeof(ehdr)) || 156 1.1.2.2 bouyer (memcmp(ehdr.e_ident, ELFMAG, SELFMAG) != 0) || 157 1.1.2.2 bouyer (ehdr.e_ident[EI_CLASS] != ELFCLASS32)) { 158 1.1.2.2 bouyer printf("%s: No ELF header\n", bootfname); 159 1.1.2.2 bouyer goto cerr; 160 1.1.2.2 bouyer } 161 1.1.2.2 bouyer 162 1.1.2.2 bouyer for (i = 0; i < ehdr.e_phnum; i++) { 163 1.1.2.2 bouyer if (lseek(fd, (off_t) ehdr.e_phoff + i * sizeof(phdr), 0) < 0) 164 1.1.2.2 bouyer goto cerr; 165 1.1.2.2 bouyer if (read(fd, &phdr, sizeof(phdr)) != sizeof(phdr)) 166 1.1.2.2 bouyer goto cerr; 167 1.1.2.2 bouyer if (phdr.p_type != PT_LOAD) 168 1.1.2.2 bouyer continue; 169 1.1.2.2 bouyer if (lseek(fd, (off_t)phdr.p_offset, 0) < 0) 170 1.1.2.2 bouyer goto cerr; 171 1.1.2.2 bouyer if (read(fd, (char *)phdr.p_paddr, phdr.p_filesz) != phdr.p_filesz) 172 1.1.2.2 bouyer goto cerr; 173 1.1.2.2 bouyer } 174 1.1.2.2 bouyer return ((entrypt*)ehdr.e_entry); 175 1.1.2.2 bouyer 176 1.1.2.2 bouyer cerr: 177 1.1.2.2 bouyer #ifndef LIBSA_NO_FS_CLOSE 178 1.1.2.2 bouyer (void) close(fd); 179 1.1.2.2 bouyer #endif 180 1.1.2.2 bouyer err: 181 1.1.2.2 bouyer printf("Can't load '%s'\n", bootfname); 182 1.1.2.2 bouyer return ((entrypt*)-1); 183 1.1.2.2 bouyer } 184
Indexes created Thu Oct 30 03:10:01 GMT 2025