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- /*-
- * 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.
- *
- * @(#)boot.c 7.4 (Berkeley) 5/5/91
- */
-
- #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");
- }
-