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/* $Id$ */
/** @file
* VBoxSysTables.c - VirtualBox system tables
*/
/*
* Copyright (C) 2009-2020 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.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiLib.h>
#include <Protocol/DevicePathToText.h>
#include <IndustryStandard/Acpi10.h>
#include <IndustryStandard/Acpi20.h>
#include <IndustryStandard/SmBios.h>
#include <Guid/SmBios.h>
#include <Guid/Acpi.h>
#include <Guid/Mps.h>
#include "VBoxPkg.h"
#include "DevEFI.h"
#include "iprt/asm.h"
/*********************************************************************************************************************************
* Internal Functions *
*********************************************************************************************************************************/
EFI_STATUS EFIAPI
ConvertSystemTable (
IN EFI_GUID *TableGuid,
IN OUT VOID **Table
);
#define MPS_PTR SIGNATURE_32('_','M','P','_')
#define SMBIOS_PTR SIGNATURE_32('_','S','M','_')
#define EBDA_BASE (0x9FC0 << 4)
VOID *
FindSMBIOSPtr (
VOID
)
{
UINTN Address;
//
// First Search 0x0e0000 - 0x0fffff for SMBIOS Ptr
//
for (Address = 0xe0000; Address < 0xfffff; Address += 0x10) {
if (*(UINT32 *)(Address) == SMBIOS_PTR) {
return (VOID *)Address;
}
}
return NULL;
}
VOID *
FindMPSPtr (
VOID
)
{
UINTN Address;
UINTN Index;
//
// First Search 0x0e0000 - 0x0fffff for MPS Ptr
//
for (Address = 0xe0000; Address < 0xfffff; Address += 0x10) {
if (*(UINT32 *)(Address) == MPS_PTR) {
return (VOID *)Address;
}
}
//
// Search EBDA
//
Address = EBDA_BASE;
for (Index = 0; Index < 0x400 ; Index += 16) {
if (*(UINT32 *)(Address + Index) == MPS_PTR) {
return (VOID *)(Address + Index);
}
}
return NULL;
}
EFI_STATUS EFIAPI
ConvertAndInstallTable(EFI_GUID* Guid, VOID* Ptr)
{
EFI_STATUS rc = EFI_SUCCESS;
rc = ConvertSystemTable(Guid, &Ptr);
//ASSERT_EFI_ERROR (rc);
rc = gBS->InstallConfigurationTable(Guid, Ptr);
ASSERT_EFI_ERROR (rc);
return rc;
}
/**
* VBoxSysTablesDxe entry point.
*
* @returns EFI status code.
*
* @param ImageHandle The image handle.
* @param SystemTable The system table pointer.
*/
EFI_STATUS EFIAPI
DxeInitializeVBoxSysTables(IN EFI_HANDLE ImageHandle, IN EFI_SYSTEM_TABLE *SystemTable)
{
EFI_STATUS rc;
VOID* Ptr;
DEBUG((DEBUG_INFO, "DxeInitializeVBoxSysTables\n"));
Ptr = FindSMBIOSPtr();
DEBUG((DEBUG_INFO, "SMBIOS=%p\n", Ptr));
ASSERT(Ptr != NULL);
if (Ptr)
{
rc = ConvertAndInstallTable(&gEfiSmbiosTableGuid, Ptr);
ASSERT_EFI_ERROR (rc);
}
Ptr = FindMPSPtr();
DEBUG((DEBUG_INFO, "MPS=%p\n", Ptr));
// MPS can be null in non IO-APIC configs
if (Ptr)
rc = ConvertAndInstallTable(&gEfiMpsTableGuid, Ptr);
return EFI_SUCCESS;
}
EFI_STATUS EFIAPI
DxeUninitializeVBoxSysTables(IN EFI_HANDLE ImageHandle)
{
return EFI_SUCCESS;
}
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