diff options
author | Tobias Weingartner <weingart@cvs.openbsd.org> | 1997-03-31 03:12:20 +0000 |
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committer | Tobias Weingartner <weingart@cvs.openbsd.org> | 1997-03-31 03:12:20 +0000 |
commit | db37cd8003c371210064ba9f9a9c279f13a175d2 (patch) | |
tree | 95a740b2174d900a416d0fd7fac0895c9e3972ab /sys/arch/i386/stand/boot/boot.c | |
parent | 1dc40aae41ae95a97b3d0955f1cf85385b6de1a4 (diff) |
Initial /boot stuff (from Mickey)
Diffstat (limited to 'sys/arch/i386/stand/boot/boot.c')
-rw-r--r-- | sys/arch/i386/stand/boot/boot.c | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/sys/arch/i386/stand/boot/boot.c b/sys/arch/i386/stand/boot/boot.c new file mode 100644 index 00000000000..5770f608d53 --- /dev/null +++ b/sys/arch/i386/stand/boot/boot.c @@ -0,0 +1,130 @@ +/* $OpenBSD: boot.c,v 1.2 1997/03/31 03:12:03 weingart Exp $ */ +/* + * Copyright (c) 1997 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Michael Shalayeff. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * 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 <a.out.h> +#include <sys/disklabel.h> +#include <libsa.h> +#include "cmd.h" + +/* + * Boot program, loaded by boot block from remaing 7.5K of boot area. + * Sifts through disklabel and attempts to load an program image of + * a standalone program off the disk. If keyboard is hit during load, + * or if an error is encounter, try alternate files. + */ + +char *kernels[] = { + "bsd", "bsd.gz", + "obsd", "obsd.gz", + "bsd.old", "bsd.old.gz", + NULL +}; + +int retry = 0; +extern char version[]; +extern dev_t bootdev; +extern int boothowto; +int cnvmem, extmem, probemem; + +void boot (); +struct cmd_state cmd; + +/* + * Boot program... loads /boot out of filesystem indicated by arguements. + * We assume an autoboot unless we detect a misconfiguration. + */ +void +boot() +{ + register char *bootfile = kernels[0]; + register int i; + + + /* Get memory size */ + cnvmem = memsize(0); + extmem = memsize(1); + gateA20(1); + probemem = memprobe(); + + + /* XXX init cmd here to cut on .data !!! */ + strncpy(cmd.bootdev, +#ifdef _TEST + "/dev/rfd0a", +#else + "fd(0,a)", +#endif + sizeof(cmd.bootdev)); + cmd.image[0] = '\0'; + cmd.cwd[0] = '/'; + cmd.cwd[1] = '\0'; + cmd.addr = (void *)0x100000; + cmd.timeout = 50000; + + printf("\n>> OpenBSD BOOT: %d/%d (%d) k [%s]\n", + cnvmem, extmem, probemem, version); + + for (i = 0;;) { + + strncpy(cmd.image, bootfile, sizeof(cmd.image)); + + do { + printf("boot> "); + } while(!getcmd(&cmd) && !execmd(&cmd)); + + sprintf(cmd.path, "%s%s%s", cmd.bootdev, cmd.cwd, bootfile); + printf("\nbooting %s: ", cmd.path); + exec (cmd.path, cmd.addr, boothowto); + + if(kernels[++i] == NULL) + bootfile = kernels[i=0]; + else + bootfile = kernels[i]; + + cmd.timeout += 20; + + printf(" failed(%d)\nwill try %s\n", errno, bootfile); + } +} + +#ifdef _TEST +int +main() +{ + boot(); + return 0; +} +#endif |