181 lines
5.1 KiB
C
181 lines
5.1 KiB
C
/* $NetBSD: exec.c,v 1.6 1999/01/28 20:21:24 christos Exp $ */
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/*
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* Copyright (c) 1982, 1986, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1996
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* Matthias Drochner. All rights reserved.
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* Copyright (c) 1996
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* Perry E. Metzger. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)boot.c 8.1 (Berkeley) 6/10/93
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*/
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/*
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* starts NetBSD a.out kernel needs lowlevel startup from startprog.S
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*/
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#include <sys/param.h>
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#include <sys/reboot.h>
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#ifdef COMPAT_OLDBOOT
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#include <sys/disklabel.h>
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#endif
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#include <lib/libsa/stand.h>
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#include "loadfile.h"
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#include "libi386.h"
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#include "bootinfo.h"
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#ifdef COMPAT_OLDBOOT
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static int
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dev2major(devname, major)
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char *devname;
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int *major;
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{
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static char *devices[] = {"wd", "", "fd", "", "sd"};
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#define NUMDEVICES (sizeof(devices)/sizeof(char *))
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int i;
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for (i = 0; i < NUMDEVICES; i++)
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if (!strcmp(devname, devices[i])) {
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*major = i;
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return (0);
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}
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return (-1);
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}
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#endif
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#define BOOT_NARGS 6
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extern struct btinfo_console btinfo_console;
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int
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exec_netbsd(file, loadaddr, boothowto)
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const char *file;
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physaddr_t loadaddr;
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int boothowto;
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{
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u_long boot_argv[BOOT_NARGS];
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int fd;
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#ifdef COMPAT_OLDBOOT
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char *fsname, *devname;
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int unit, part;
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const char *filename;
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int bootdevnr;
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u_long marks[LOAD_MAX];
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struct btinfo_symtab btinfo_symtab;
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#endif
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#ifdef DEBUG
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printf("exec: file=%s loadaddr=0x%lx\n", file, loadaddr);
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#endif
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BI_ALLOC(6); /* ??? */
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BI_ADD(&btinfo_console, BTINFO_CONSOLE, sizeof(struct btinfo_console));
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marks[LOAD_START] = loadaddr;
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if ((fd = loadfile(file, marks)) == -1)
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goto out;
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marks[LOAD_END] = (((u_long) marks[LOAD_END] + sizeof(int) - 1)) &
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(-sizeof(int));
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btinfo_symtab.nsym = marks[LOAD_NSYM];
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btinfo_symtab.ssym = marks[LOAD_SYM];
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btinfo_symtab.esym = marks[LOAD_END];
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BI_ADD(&btinfo_symtab, BTINFO_SYMTAB, sizeof(struct btinfo_symtab));
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boot_argv[0] = boothowto;
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#ifdef COMPAT_OLDBOOT
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/* prepare boot device information for kernel */
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if (parsebootfile(file, &fsname, &devname, &unit, &part, &filename)
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|| strcmp(fsname, "ufs"))
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bootdevnr = 0; /* XXX error out if parse error??? */
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else {
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int major;
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if (strcmp(devname, "hd") == 0) {
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/* generic BIOS disk, have to guess type */
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struct open_file *f = &files[fd]; /* XXX */
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if (biosdisk_gettype(f) == DTYPE_SCSI)
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devname = "sd";
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else
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devname = "wd";
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/*
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* The old boot block performed the following
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* conversion:
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*
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* hdN -> Xd0
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*
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* where X is the type specified by the label.
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* We mimmick that here, for lack of any better
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* way of doing things.
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*/
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unit = 0;
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}
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if (dev2major(devname, &major))
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bootdevnr = 0; /* XXX error out??? */
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else
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bootdevnr = MAKEBOOTDEV(major, 0, 0, unit, part);
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}
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boot_argv[1] = bootdevnr;
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#else
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boot_argv[1] = 0;
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#endif
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#ifdef PASS_BIOSGEOM
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bi_getbiosgeom();
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#endif
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boot_argv[2] = vtophys(bootinfo); /* old cyl offset */
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boot_argv[3] = marks[LOAD_END];
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boot_argv[4] = getextmem();
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boot_argv[5] = getbasemem();
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close(fd);
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#ifdef DEBUG
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printf("Start @ 0x%lx [%ld=0x%lx-0x%lx]...\n", marks[LOAD_START],
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marks[LOAD_NSYM], marks[LOAD_SYM], marks[LOAD_END]);
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#endif
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startprog(marks[LOAD_START], BOOT_NARGS, boot_argv, 0x90000);
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panic("exec returned");
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out:
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BI_FREE();
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bootinfo = 0;
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return (-1);
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}
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