/* $OpenBSD: boot.c,v 1.36 2007/06/26 10:34:41 tom Exp $ */ /* * Copyright (c) 2003 Dale Rahn * Copyright (c) 1997,1998 Michael Shalayeff * All rights reserved. * * 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 AUTHOR ``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. * */ #include <sys/param.h> #include <sys/reboot.h> #include <sys/stat.h> #include <libsa.h> #include <lib/libsa/loadfile.h> #include <lib/libkern/funcs.h> #include "cmd.h" #ifndef KERNEL #define KERNEL "/bsd" #endif char prog_ident[40]; char *progname = "BOOT"; extern const char version[]; struct cmd_state cmd; /* bootprompt can be set by MD code to avoid prompt first time round */ int bootprompt = 1; char *kernelfile = KERNEL; /* can be changed by MD code */ void boot(dev_t bootdev) { int fd; int try = 0, st; u_long marks[MARK_MAX]; machdep(); snprintf(prog_ident, sizeof(prog_ident), ">> OpenBSD/" MACHINE " %s %s", progname, version); printf("%s\n", prog_ident); devboot(bootdev, cmd.bootdev); strlcpy(cmd.image, kernelfile, sizeof(cmd.image)); cmd.boothowto = 0; cmd.conf = "/etc/boot.conf"; cmd.addr = (void *)DEFAULT_KERNEL_ADDRESS; cmd.timeout = 5; st = read_conf(); if (!bootprompt) snprintf(cmd.path, sizeof cmd.path, "%s:%s", cmd.bootdev, cmd.image); while (1) { /* no boot.conf, or no boot cmd in there */ if (bootprompt && st <= 0) do { printf("boot> "); } while(!getcmd()); st = 0; bootprompt = 1; /* allow reselect should we fail */ printf("booting %s: ", cmd.path); marks[MARK_START] = (u_long)cmd.addr; if ((fd = loadfile(cmd.path, marks, LOAD_ALL)) != -1) { close(fd); break; } kernelfile = KERNEL; try++; strlcpy(cmd.image, kernelfile, sizeof(cmd.image)); printf(" failed(%d). will try %s\n", errno, kernelfile); if (try < 2) { if (cmd.timeout > 0) cmd.timeout++; } else { if (cmd.timeout) printf("Turning timeout off.\n"); cmd.timeout = 0; } } /* exec */ run_loadfile(marks, cmd.boothowto); } #ifdef _TEST int main() { boot(0); return 0; } #endif