projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 8ae0e4b4 | 1 | /* |
| 0880b18e | 2 | * Copyright (c) 1982, 1986 Regents of the University of California. |
| 8ae0e4b4 KM |
3 | * All rights reserved. The Berkeley software License Agreement |
| 4 | * specifies the terms and conditions for redistribution. | |
| 5 | * | |
| 95f51977 | 6 | * @(#)bootra.c 7.1 (Berkeley) 6/5/86 |
| 8ae0e4b4 | 7 | */ |
| b6c81d5e RE |
8 | |
| 9 | #include "../h/param.h" | |
| 10 | #include "../h/inode.h" | |
| 11 | #include "../h/fs.h" | |
| 12 | #include "../h/vm.h" | |
| 13 | #include <a.out.h> | |
| 14 | #include "saio.h" | |
| 15 | #include "../h/reboot.h" | |
| 16 | ||
| 95f51977 | 17 | char bootprog[20] = "ra(0,0)boot"; |
| b6c81d5e RE |
18 | |
| 19 | /* | |
| 20 | * Boot program... arguments passed in r10 and r11 | |
| 21 | * are passed through to the full boot program. | |
| 22 | */ | |
| 23 | ||
| 24 | main() | |
| 25 | { | |
| 24a62d66 MK |
26 | register unsigned howto, devtype; /* howto=r11, devtype=r10 */ |
| 27 | int io, unit, partition; | |
| 28 | register char *cp; | |
| b6c81d5e RE |
29 | |
| 30 | #ifdef lint | |
| 31 | howto = 0; devtype = 0; | |
| 32 | #endif | |
| 24a62d66 MK |
33 | unit = (devtype >> B_UNITSHIFT) & B_UNITMASK; |
| 34 | unit += 8 * ((devtype >> B_ADAPTORSHIFT) & B_ADAPTORMASK); | |
| 35 | partition = (devtype >> B_PARTITIONSHIFT) & B_PARTITIONMASK; | |
| 36 | cp = bootprog + 3; | |
| 37 | if (unit >= 10) | |
| 38 | *cp++ = unit / 10 + '0'; | |
| 39 | *cp++ = unit % 10 + '0'; | |
| 40 | *cp++ = ','; | |
| 41 | if (partition >= 10) | |
| 42 | *cp++ = partition / 10 + '0'; | |
| 43 | *cp++ = partition % 10 + '0'; | |
| 44 | bcopy((caddr_t) ")boot", cp, 6); | |
| f834e141 | 45 | printf("loading %s\n", bootprog); |
| b6c81d5e RE |
46 | io = open(bootprog, 0); |
| 47 | if (io >= 0) | |
| 48 | copyunix(howto, devtype, io); | |
| f834e141 | 49 | _stop("boot failed\n"); |
| b6c81d5e RE |
50 | } |
| 51 | ||
| 52 | /*ARGSUSED*/ | |
| 53 | copyunix(howto, devtype, io) | |
| 54 | register howto, devtype, io; /* howto=r11, devtype=r10 */ | |
| 55 | { | |
| 56 | struct exec x; | |
| 57 | register int i; | |
| 58 | char *addr; | |
| 59 | ||
| 60 | i = read(io, (char *)&x, sizeof x); | |
| 61 | if (i != sizeof x || | |
| 62 | (x.a_magic != 0407 && x.a_magic != 0413 && x.a_magic != 0410)) | |
| 63 | _stop("Bad format\n"); | |
| 64 | if ((x.a_magic == 0413 || x.a_magic == 0410) && | |
| 65 | lseek(io, 0x400, 0) == -1) | |
| 66 | goto shread; | |
| 67 | if (read(io, (char *)0, x.a_text) != x.a_text) | |
| 68 | goto shread; | |
| 69 | addr = (char *)x.a_text; | |
| 70 | if (x.a_magic == 0413 || x.a_magic == 0410) | |
| 71 | while ((int)addr & CLOFSET) | |
| 72 | *addr++ = 0; | |
| 73 | if (read(io, addr, x.a_data) != x.a_data) | |
| 74 | goto shread; | |
| 75 | addr += x.a_data; | |
| 76 | x.a_bss += 128*512; /* slop */ | |
| 77 | for (i = 0; i < x.a_bss; i++) | |
| 78 | *addr++ = 0; | |
| 79 | x.a_entry &= 0x7fffffff; | |
| 80 | (*((int (*)()) x.a_entry))(); | |
| f834e141 | 81 | return; |
| b6c81d5e RE |
82 | shread: |
| 83 | _stop("Short read\n"); | |
| 84 | } |