/* $NetBSD: bootxx.c,v 1.1.66.1 2019/12/18 20:04:32 martin Exp $ */ /*- * Copyright (c) 1999 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jonathan Stone, Michael Hitch and Simon Burge. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Ralph Campbell. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)boot.c 8.1 (Berkeley) 6/10/93 */ #include #include #include #include typedef void (entrypt) (int, char **, int, const void *, int, char *); entrypt main; entrypt *loadfile (char *path, char *name); /* * This gets arguments from the PROM, calls other routines to open * and load the secondary boot loader called boot, and then transfers * execution to that program. */ void main(int argc, char **argv, int code, const void *cv, int bim, char *bip) { char *cp; entrypt *entry; cp = *argv; printf("\nNetBSD/emips " NETBSD_VERS " " BOOTXX_FS_NAME " Bootstrap\n"); entry = loadfile(cp, "netbsd"); if ((int)entry != -1) goto goodload; /* Give old /boot a go... */ entry = loadfile(cp, "/boot"); if ((int)entry != -1) goto goodload; goto bad; goodload: entry(argc, argv, code, cv, bim, bip); bad: printf("Boot failed.\n"); } /* * Open 'filename', read in program and return the entry point or -1 if error. */ entrypt * loadfile(char *path, char *name) { int fd, i; char c, *buf, bootfname[64]; Elf32_Ehdr ehdr; Elf32_Phdr phdr; strcpy(bootfname, path); buf = bootfname; while ((c = *buf++) != '\0') { if (c == ')') break; if (c != '/') continue; while ((c = *buf++) != '\0') if (c == '/') break; /* * Make "N/rzY" with no trailing '/' valid by adding * the extra '/' before appending 'bootemips' to the path. */ if (c != '/') { buf--; *buf++ = '/'; *buf = '\0'; } break; } strcpy(buf, name); if ((fd = open(bootfname, 0)) < 0) { printf("open %s: %d\n", bootfname, errno); goto err; } /* read the exec header */ i = read(fd, (char *)&ehdr, sizeof(ehdr)); if ((i != sizeof(ehdr)) || (memcmp(ehdr.e_ident, ELFMAG, SELFMAG) != 0) || (ehdr.e_ident[EI_CLASS] != ELFCLASS32)) { printf("%s: No ELF header\n", bootfname); goto cerr; } for (i = 0; i < ehdr.e_phnum; i++) { if (lseek(fd, (off_t) ehdr.e_phoff + i * sizeof(phdr), 0) < 0) goto cerr; if (read(fd, &phdr, sizeof(phdr)) != sizeof(phdr)) goto cerr; if (phdr.p_type != PT_LOAD) continue; if (lseek(fd, (off_t)phdr.p_offset, 0) < 0) goto cerr; if (read(fd, (char *)phdr.p_paddr, phdr.p_filesz) != phdr.p_filesz) goto cerr; } return ((entrypt*)ehdr.e_entry); cerr: #ifndef LIBSA_NO_FS_CLOSE (void) close(fd); #endif err: printf("Can't load '%s'\n", bootfname); return ((entrypt*)-1); }