|
Last change
on this file since 56292 was 56292, checked in by vboxsync, 9 years ago |
|
Devices: Updated (C) year.
|
-
Property svn:eol-style
set to
native
-
Property svn:keywords
set to
Author Date Id Revision
|
|
File size:
1.5 KB
|
| Line | |
|---|
| 1 | ;; @file
|
|---|
| 2 | ;; Initial system setup which needs to run in protected mode.
|
|---|
| 3 | ;;
|
|---|
| 4 |
|
|---|
| 5 | ;;
|
|---|
| 6 | ;; Copyright (C) 2004-2015 Oracle Corporation
|
|---|
| 7 | ;;
|
|---|
| 8 | ;; This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 9 | ;; available from http://www.virtualbox.org. This file is free software;
|
|---|
| 10 | ;; you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 11 | ;; General Public License (GPL) as published by the Free Software
|
|---|
| 12 | ;; Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 13 | ;; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 14 | ;; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 15 | ;;
|
|---|
| 16 |
|
|---|
| 17 | SVR equ 0FEE000F0h
|
|---|
| 18 | LVT_LINT0 equ 0FEE00350h
|
|---|
| 19 | LVT_LINT1 equ 0FEE00360h
|
|---|
| 20 |
|
|---|
| 21 | public pmode_setup
|
|---|
| 22 |
|
|---|
| 23 | ;; Enable the local APIC and program LINT0/LINT1 entries. Without that,
|
|---|
| 24 | ;; virtual wire interrupts could not be delivered. Note that the APIC must
|
|---|
| 25 | ;; be enabled first because when disabled, all LVTs are forced masked.
|
|---|
| 26 |
|
|---|
| 27 | pmode_setup proc near
|
|---|
| 28 |
|
|---|
| 29 | .386
|
|---|
| 30 | push eax
|
|---|
| 31 | push esi
|
|---|
| 32 | pushf
|
|---|
| 33 | cli ; Interrupts would kill us!
|
|---|
| 34 | call pmode_enter
|
|---|
| 35 |
|
|---|
| 36 | mov eax, cr0 ; Clear CR0.CD and CR0.NW
|
|---|
| 37 | and eax, 09FFFFFFFh
|
|---|
| 38 | mov cr0, eax
|
|---|
| 39 |
|
|---|
| 40 | mov esi, SVR ; Program the SVR -- enable the APIC,
|
|---|
| 41 | mov eax, 010Fh ; set spurious interrupt vector to 15
|
|---|
| 42 | mov [esi], eax
|
|---|
| 43 |
|
|---|
| 44 | mov esi, LVT_LINT0 ; Program LINT0 to ExtINT and unmask
|
|---|
| 45 | mov eax, [esi]
|
|---|
| 46 | and eax, 0FFFE00FFh
|
|---|
| 47 | or ah, 7
|
|---|
| 48 | mov [esi], eax
|
|---|
| 49 |
|
|---|
| 50 | mov esi, LVT_LINT1 ; Program LINT1 to NMI and unmask
|
|---|
| 51 | mov eax, [esi]
|
|---|
| 52 | and eax, 0FFFE00FFh
|
|---|
| 53 | or ah, 4
|
|---|
| 54 | mov [esi], eax
|
|---|
| 55 |
|
|---|
| 56 | call pmode_exit
|
|---|
| 57 | popf
|
|---|
| 58 | pop esi
|
|---|
| 59 | pop eax
|
|---|
| 60 | .286
|
|---|
| 61 | ret
|
|---|
| 62 |
|
|---|
| 63 | pmode_setup endp
|
|---|
Note:
See
TracBrowser
for help on using the repository browser.
