242 lines
6.6 KiB
C
242 lines
6.6 KiB
C
/*-
|
|
* Copyright (c) 1982, 1986, 1990 The Regents of the University of California.
|
|
* 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 the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. 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.
|
|
*
|
|
* from: @(#)boot.c 7.4 (Berkeley) 5/5/91
|
|
* $Id: boot.c,v 1.2 1993/05/22 07:58:44 cgd Exp $
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/reboot.h>
|
|
#include <a.out.h>
|
|
#include "saio.h"
|
|
|
|
#ifndef INSECURE
|
|
#include "sys/stat.h"
|
|
struct stat sb;
|
|
#endif
|
|
/* XXX -- see sys/reboot.h */
|
|
#define B_MAKEDEV(a,u,p,t) \
|
|
(((a) << B_ADAPTORSHIFT) | ((u) << B_UNITSHIFT) | \
|
|
((p) << B_PARTITIONSHIFT) | ((t) << B_TYPESHIFT))
|
|
|
|
/*
|
|
* Boot program... arguments in `devtype' and `howto' determine
|
|
* whether boot stops to ask for system name and which device
|
|
* boot comes from.
|
|
*/
|
|
|
|
/* Types in `devtype' specifying major device */
|
|
char devname[][2] = {
|
|
'\0', '\0', /* 0 = ct */
|
|
'\0', '\0', /* 1 = fd */
|
|
'r', 'd', /* 2 = rd */
|
|
'\0', '\0', /* 3 = sw */
|
|
's', 'd', /* 4 = sd */
|
|
};
|
|
#define MAXTYPE (sizeof(devname) / sizeof(devname[0]))
|
|
|
|
char line[100];
|
|
|
|
int retry = 0;
|
|
extern char *lowram;
|
|
extern int noconsole;
|
|
extern int howto, devtype;
|
|
|
|
#define MSUS (0xfffffedc)
|
|
|
|
char rom2mdev[] = {
|
|
0, /* 0 - none */
|
|
0, /* 1 - none */
|
|
0, /* 2 - none */
|
|
0, /* 3 - none */
|
|
0, /* 4 - none */
|
|
0, /* 5 - none */
|
|
0, /* 6 - none */
|
|
0, /* 7 - none */
|
|
0, /* 8 - none */
|
|
0, /* 9 - none */
|
|
0, /* 10 - none */
|
|
0, /* 11 - none */
|
|
0, /* 12 - none */
|
|
0, /* 13 - none */
|
|
4, /* 14 - SCSI disk */
|
|
0, /* 15 - none */
|
|
2, /* 16 - CS/80 device on HPIB */
|
|
2, /* 17 - CS/80 device on HPIB */
|
|
0, /* 18 - none */
|
|
0, /* 19 - none */
|
|
0, /* 20 - none */
|
|
0, /* 21 - none */
|
|
0, /* 22 - none */
|
|
0, /* 23 - none */
|
|
0, /* 24 - none */
|
|
0, /* 25 - none */
|
|
0, /* 26 - none */
|
|
0, /* 27 - none */
|
|
0, /* 28 - none */
|
|
0, /* 29 - none */
|
|
0, /* 30 - none */
|
|
0, /* 31 - none */
|
|
};
|
|
|
|
main()
|
|
{
|
|
register type, part, unit, io;
|
|
register char *cp;
|
|
|
|
printf("\nBoot\n");
|
|
#ifdef JUSTASK
|
|
howto = RB_ASKNAME|RB_SINGLE;
|
|
#else
|
|
type = (devtype >> B_TYPESHIFT) & B_TYPEMASK;
|
|
unit = (devtype >> B_UNITSHIFT) & B_UNITMASK;
|
|
unit += 8 * ((devtype >> B_ADAPTORSHIFT) & B_ADAPTORMASK);
|
|
part = (devtype >> B_PARTITIONSHIFT) & B_PARTITIONMASK;
|
|
if ((howto & RB_ASKNAME) == 0) {
|
|
if ((devtype & B_MAGICMASK) != B_DEVMAGIC) {
|
|
/*
|
|
* we have to map the ROM device type codes
|
|
* to Unix major device numbers.
|
|
*/
|
|
type = rom2mdev[*(char *)MSUS & 0x1f];
|
|
devtype = (devtype &~ (B_TYPEMASK << B_TYPESHIFT))
|
|
| (type << B_TYPESHIFT);
|
|
}
|
|
if (type >= 0 && type <= MAXTYPE && devname[type][0]) {
|
|
cp = line;
|
|
*cp++ = devname[type][0];
|
|
*cp++ = devname[type][1];
|
|
*cp++ = '(';
|
|
if (unit >= 10)
|
|
*cp++ = unit / 10 + '0';
|
|
*cp++ = unit % 10 + '0';
|
|
*cp++ = ',';
|
|
*cp++ = part + '0';
|
|
*cp++ = ')';
|
|
strcpy(cp, UNIX);
|
|
} else
|
|
howto = RB_SINGLE|RB_ASKNAME;
|
|
}
|
|
#endif
|
|
for (;;) {
|
|
if (!noconsole && (howto & RB_ASKNAME)) {
|
|
printf(": ");
|
|
gets(line);
|
|
} else
|
|
printf(": %s\n", line);
|
|
io = open(line, 0);
|
|
if (io >= 0) {
|
|
#ifndef INSECURE
|
|
(void) fstat(io, &sb);
|
|
if (sb.st_uid || (sb.st_mode & 2)) {
|
|
printf("non-secure file, will not load\n");
|
|
howto = RB_SINGLE|RB_ASKNAME;
|
|
continue;
|
|
}
|
|
#endif
|
|
if (howto & RB_ASKNAME) {
|
|
/*
|
|
* Build up devtype register to pass on to
|
|
* booted program.
|
|
*/
|
|
cp = line;
|
|
for (type = 0; type <= MAXTYPE; type++)
|
|
if ((devname[type][0] == cp[0]) &&
|
|
(devname[type][1] == cp[1]))
|
|
break;
|
|
if (type <= MAXTYPE) {
|
|
cp += 3;
|
|
unit = *cp++ - '0';
|
|
if (*cp >= '0' && *cp <= '9')
|
|
unit = unit * 10 + *cp++ - '0';
|
|
cp++;
|
|
part = atol(cp);
|
|
devtype = B_MAKEDEV(unit >> 3, unit & 7, part, type);
|
|
}
|
|
}
|
|
devtype |= B_DEVMAGIC;
|
|
copyunix(howto, devtype, io);
|
|
close(io);
|
|
howto = RB_SINGLE|RB_ASKNAME;
|
|
}
|
|
bad:
|
|
if (++retry > 2)
|
|
howto = RB_SINGLE|RB_ASKNAME;
|
|
}
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
copyunix(howto, devtype, io)
|
|
register howto; /* d7 contains boot flags */
|
|
register devtype; /* d6 contains boot device */
|
|
register io;
|
|
{
|
|
struct exec x;
|
|
register int i;
|
|
register char *load; /* a5 contains load addr for unix */
|
|
register char *addr;
|
|
|
|
i = read(io, (char *)&x, sizeof x);
|
|
if (i != sizeof x ||
|
|
(x.a_magic != 0407 && x.a_magic != 0413 && x.a_magic != 0410))
|
|
_stop("Bad format\n");
|
|
printf("%d", x.a_text);
|
|
if (x.a_magic == 0413 && lseek(io, 0x400, 0) == -1)
|
|
goto shread;
|
|
load = addr = lowram;
|
|
if (read(io, (char *)addr, x.a_text) != x.a_text)
|
|
goto shread;
|
|
addr += x.a_text;
|
|
if (x.a_magic == 0413 || x.a_magic == 0410)
|
|
while ((int)addr & CLOFSET)
|
|
*addr++ = 0;
|
|
printf("+%d", x.a_data);
|
|
if (read(io, addr, x.a_data) != x.a_data)
|
|
goto shread;
|
|
addr += x.a_data;
|
|
printf("+%d", x.a_bss);
|
|
x.a_bss += 128*512; /* slop */
|
|
for (i = 0; i < x.a_bss; i++)
|
|
*addr++ = 0;
|
|
x.a_entry += (int)lowram;
|
|
printf(" start 0x%x\n", x.a_entry);
|
|
#ifdef __GNUC__
|
|
asm(" movl %0,d7" : : "m" (howto));
|
|
asm(" movl %0,d6" : : "m" (devtype));
|
|
asm(" movl %0,a5" : : "a" (load));
|
|
#endif
|
|
(*((int (*)()) x.a_entry))();
|
|
exit();
|
|
shread:
|
|
_stop("Short read\n");
|
|
}
|