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/* $Id: bs3-rm-InitAll.c $ */
/** @file
* BS3Kit - Initialize all components, real mode.
*/
/*
* Copyright (C) 2007-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox 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.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
//#define BS3_USE_RM_TEXT_SEG 1
#include "bs3kit-template-header.h"
#include "bs3-cmn-test.h"
#include <iprt/asm-amd64-x86.h>
BS3_MODE_PROTO_NOSB(void, Bs3EnteredMode,(void));
BS3_DECL(void) Bs3InitAll_rm(void)
{
uint8_t volatile BS3_FAR *pcTicksFlpyOff;
/*
* Detect CPU first as the memory init code will otherwise use 386
* instrunctions and cause trouble on older CPUs.
*/
Bs3CpuDetect_rm_far();
Bs3InitMemory_rm_far();
Bs3InitGdt_rm_far();
/*
* Before we disable all interrupts, try convince the BIOS to stop the
* floppy motor, as it is kind of disturbing when the floppy light remains
* on for the whole testcase execution.
*/
ASMIntDisable(); /* (probably already disabled, but no guarantees) */
pcTicksFlpyOff = (uint8_t volatile BS3_FAR *)BS3_FP_MAKE(0x40, 0x40);
if (*pcTicksFlpyOff)
{
uint32_t volatile BS3_FAR *pcTicks = (uint32_t volatile BS3_FAR *)BS3_FP_MAKE(0x40, 0x6c);
uint32_t cInitialTicks;
*pcTicksFlpyOff = 1; /* speed up the countdown, don't want to wait for two seconds here. */
cInitialTicks = *pcTicks;
ASMIntEnable();
while (*pcTicks == cInitialTicks)
ASMHalt();
}
ASMIntDisable();
Bs3PicSetup(false /*fForcedReInit*/);
/*
* Initialize IDTs and such.
*/
if (g_uBs3CpuDetected & BS3CPU_F_LONG_MODE)
Bs3Trap64Init();
if ((g_uBs3CpuDetected & BS3CPU_TYPE_MASK) >= BS3CPU_80386)
Bs3Trap32Init();
if ((g_uBs3CpuDetected & BS3CPU_TYPE_MASK) >= BS3CPU_80286)
Bs3Trap16Init();
Bs3TrapRmV86Init();
/*
* Perform a real-mode enter to make some final environment adjustments
* (like installing our syscall).
*/
Bs3EnteredMode_rm();
}
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