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1 files changed, 80 insertions, 0 deletions
diff --git a/src/VBox/ValidationKit/bootsectors/bootsector-shutdown.asm b/src/VBox/ValidationKit/bootsectors/bootsector-shutdown.asm
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+++ b/src/VBox/ValidationKit/bootsectors/bootsector-shutdown.asm
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+; $Id: bootsector-shutdown.asm $
+;; @file
+; Bootsector for grub chainloading that shutdowns the VM.
+;
+
+;
+; Copyright (C) 2007-2019 Oracle Corporation
+;
+; This file is part of VirtualBox Open Source Edition (OSE), as
+; available from http://www.virtualbox.org. This file is free software;
+; you can redistribute it and/or modify it under the terms of the GNU
+; General Public License (GPL) as published by the Free Software
+; Foundation, in version 2 as it comes in the "COPYING" file of the
+; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+;
+; The contents of this file may alternatively be used under the terms
+; of the Common Development and Distribution License Version 1.0
+; (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+; VirtualBox OSE distribution, in which case the provisions of the
+; CDDL are applicable instead of those of the GPL.
+;
+; You may elect to license modified versions of this file under the
+; terms and conditions of either the GPL or the CDDL or both.
+;
+
+%include "VBox/bios.mac"
+
+
+BITS 16
+start:
+ ; Start with a jump just to follow the convention.
+ jmp short the_code
+ nop
+times 3ah db 0
+
+the_code:
+ cli
+
+ ;
+ ; VBox/Bochs shutdown request - write "Shutdown" byte by byte to shutdown port.
+ ;
+ mov cx, 64
+ mov dx, VBOX_BIOS_SHUTDOWN_PORT
+ mov bx, VBOX_BIOS_OLD_SHUTDOWN_PORT
+retry:
+ mov al, 'S'
+ out dx, al
+ mov al, 'h'
+ out dx, al
+ mov al, 'u'
+ out dx, al
+ mov al, 't'
+ out dx, al
+ mov al, 'd'
+ out dx, al
+ mov al, 'o'
+ out dx, al
+ mov al, 'w'
+ out dx, al
+ mov al, 'n'
+ out dx, al
+ xchg dx, bx ; alternate between the new (VBox) and old (Bochs) ports.
+ loop retry
+
+ ;
+ ; Shutdown failed!
+ ;
+
+ ;; @todo print some message before halting.
+ hlt
+
+ ;
+ ; Padd the remainder of the sector with zeros and
+ ; end it with the dos signature.
+ ;
+padding:
+times 510 - (padding - start) db 0
+ db 055h, 0aah
+