projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 15637ed4 RG |
1 | /* |
| 2 | * Ported to boot 386BSD by Julian Elischer (julian@tfs.com) Sept 1992 | |
| 3 | * | |
| 4 | * Mach Operating System | |
| 5 | * Copyright (c) 1992, 1991 Carnegie Mellon University | |
| 6 | * All Rights Reserved. | |
| 7 | * | |
| 8 | * Permission to use, copy, modify and distribute this software and its | |
| 9 | * documentation is hereby granted, provided that both the copyright | |
| 10 | * notice and this permission notice appear in all copies of the | |
| 11 | * software, derivative works or modified versions, and any portions | |
| 12 | * thereof, and that both notices appear in supporting documentation. | |
| 13 | * | |
| 14 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" | |
| 15 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR | |
| 16 | * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. | |
| 17 | * | |
| 18 | * Carnegie Mellon requests users of this software to return to | |
| 19 | * | |
| 20 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU | |
| 21 | * School of Computer Science | |
| 22 | * Carnegie Mellon University | |
| 23 | * Pittsburgh PA 15213-3890 | |
| 24 | * | |
| 25 | * any improvements or extensions that they make and grant Carnegie Mellon | |
| 26 | * the rights to redistribute these changes. | |
| 27 | */ | |
| 28 | ||
| 29 | /* | |
| 30 | * HISTORY | |
| 31 | * $Log: boot2.s,v $ | |
| 32 | * Revision 2.2 92/04/04 11:35:26 rpd | |
| 33 | * From 2.5 | |
| 34 | * [92/03/30 rvb] | |
| 35 | * | |
| 36 | * Revision 2.2 91/04/02 14:39:21 mbj | |
| 37 | * Put into rcs tree | |
| 38 | * [90/02/09 rvb] | |
| 39 | * | |
| 40 | */ | |
| 41 | ||
| 42 | #include "asm.h" | |
| 43 | #define LOADMSG 1 | |
| 44 | /* | |
| 45 | * boot2() -- second stage boot | |
| 46 | */ | |
| 47 | ||
| 48 | .globl _ouraddr | |
| 49 | ||
| 50 | ENTRY(boot2) | |
| 51 | movl %cs, %ax | |
| 52 | movl %ax, %ds | |
| 53 | movl %ax, %es | |
| 54 | data32 | |
| 55 | sall $4, %eax | |
| 56 | data32 | |
| 57 | movl %eax, _ouraddr | |
| 58 | /* save the drive type and ID */ | |
| 59 | data32 | |
| 60 | pushl %edx | |
| 61 | /* change to protected mode */ | |
| 62 | data32 | |
| 63 | call _real_to_prot | |
| 64 | ||
| 65 | call _boot | |
| 66 | ret | |
| 67 | ||
| 68 | .data | |
| 69 | .align 2 | |
| 70 | _ouraddr: | |
| 71 | .long 0 | |
| 72 | ||
| 73 |