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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3 6f19259b-4bc3-4df7-8a09-765794883524
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bbahnsen
2006-04-21 22:54:32 +00:00
commit 878ddf1fc3
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266
EdkModulePkg/Universal/MonotonicCounter/RuntimeDxe/MonotonicCounter.c Normal file
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/*++
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
MonotonicCounter.c
Abstract:
Produced the Monotonic Counter Services as defined in the DXE CIS
Revision History:
--*/
#include "MonotonicCounter.h"
//
// The Monotonic Counter Handle
//
EFI_HANDLE mMonotonicCounterHandle = NULL;
//
// The current Monotonic count value
//
UINT64 mEfiMtc;
//
// Event to use to update the Mtc's high part when wrapping
//
EFI_EVENT mEfiMtcEvent;
//
// EfiMtcName - Variable name of the MTC value
//
CHAR16 *mEfiMtcName = (CHAR16 *) L"MTC";
//
// EfiMtcGuid - Guid of the MTC value
//
EFI_GUID mEfiMtcGuid = { 0xeb704011, 0x1402, 0x11d3, { 0x8e, 0x77, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b } };
//
// Worker functions
//
EFI_STATUS
EFIAPI
MonotonicCounterDriverGetNextMonotonicCount (
OUT UINT64 *Count
)
/*++
Routine Description:
Arguments:
Returns:
--*/
{
EFI_TPL OldTpl;
//
// Can not be called after ExitBootServices()
//
if (EfiAtRuntime ()) {
return EFI_UNSUPPORTED;
}
//
// Check input parameters
//
if (Count == NULL) {
return EFI_INVALID_PARAMETER;
}
//
// Update the monotonic counter with a lock
//
OldTpl = gBS->RaiseTPL (EFI_TPL_HIGH_LEVEL);
*Count = mEfiMtc;
mEfiMtc++;
gBS->RestoreTPL (OldTpl);
//
// If the MSB bit of the low part toggled, then signal that the high
// part needs updated now
//
if ((((UINT32) mEfiMtc) ^ ((UINT32) *Count)) & 0x80000000) {
gBS->SignalEvent (mEfiMtcEvent);
}
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
MonotonicCounterDriverGetNextHighMonotonicCount (
OUT UINT32 *HighCount
)
/*++
Routine Description:
Arguments:
Returns:
--*/
{
EFI_STATUS Status;
EFI_TPL OldTpl;
//
// Check input parameters
//
if (HighCount == NULL) {
return EFI_INVALID_PARAMETER;
}
if (!EfiAtRuntime ()) {
//
// Use a lock if called before ExitBootServices()
//
OldTpl = gBS->RaiseTPL (EFI_TPL_HIGH_LEVEL);
*HighCount = (UINT32) RShiftU64 (mEfiMtc, 32) + 1;
mEfiMtc = LShiftU64 (*HighCount, 32);
gBS->RestoreTPL (OldTpl);
} else {
*HighCount = (UINT32) RShiftU64 (mEfiMtc, 32) + 1;
mEfiMtc = LShiftU64 (*HighCount, 32);
}
//
// Update the NvRam store to match the new high part
//
Status = gRT->SetVariable (
mEfiMtcName,
&mEfiMtcGuid,
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS,
sizeof (UINT32),
HighCount
);
return Status;
}
VOID
EFIAPI
EfiMtcEventHandler (
IN EFI_EVENT Event,
IN VOID *Context
)
/*++
Routine Description:
Monotonic count event handler. This handler updates the high monotonic count.
Arguments:
Event The event to handle
Context The event context
Returns:
EFI_SUCCESS The event has been handled properly
EFI_NOT_FOUND An error occurred updating the variable.
--*/
{
UINT32 HighCount;
MonotonicCounterDriverGetNextHighMonotonicCount (&HighCount);
}
EFI_STATUS
EFIAPI
MonotonicCounterDriverInitialize (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
/*++
Routine Description:
Arguments:
(Standard EFI Image entry - EFI_IMAGE_ENTRY_POINT)
Returns:
--*/
{
EFI_STATUS Status;
UINT32 HighCount;
UINTN BufferSize;
//
// Make sure the Monotonic Counter Architectural Protocol is not already installed in the system
//
ASSERT_PROTOCOL_ALREADY_INSTALLED (NULL, &gEfiMonotonicCounterArchProtocolGuid);
//
// Initialize event to handle overflows
//
Status = gBS->CreateEvent (
EFI_EVENT_NOTIFY_SIGNAL,
EFI_TPL_CALLBACK,
EfiMtcEventHandler,
NULL,
&mEfiMtcEvent
);
ASSERT_EFI_ERROR (Status);
//
// Read the last high part
//
BufferSize = sizeof (UINT32);
Status = gRT->GetVariable (
mEfiMtcName,
&mEfiMtcGuid,
NULL,
&BufferSize,
&HighCount
);
if (EFI_ERROR (Status)) {
HighCount = 0;
}
//
// Set the current value
//
mEfiMtc = LShiftU64 (HighCount, 32);
//
// Increment the upper 32 bits for this boot
// Continue even if it fails. It will only fail if the variable services are
// not functional.
//
Status = MonotonicCounterDriverGetNextHighMonotonicCount (&HighCount);
//
// Fill in the EFI Boot Services and EFI Runtime Services Monotonic Counter Fields
//
gBS->GetNextMonotonicCount = MonotonicCounterDriverGetNextMonotonicCount;
gRT->GetNextHighMonotonicCount = MonotonicCounterDriverGetNextHighMonotonicCount;
//
// Install the Monotonic Counter Architctural Protocol onto a new handle
//
Status = gBS->InstallMultipleProtocolInterfaces (
&mMonotonicCounterHandle,
&gEfiMonotonicCounterArchProtocolGuid,
NULL,
NULL
);
ASSERT_EFI_ERROR (Status);
return EFI_SUCCESS;
}

27
EdkModulePkg/Universal/MonotonicCounter/RuntimeDxe/MonotonicCounter.dxs Normal file
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/*++
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
MonotonicCounter.dxs
Abstract:
Dependency expression source file.
--*/
#include <AutoGen.h>
#include <DxeDepex.h>
DEPENDENCY_START
EFI_VARIABLE_ARCH_PROTOCOL_GUID AND
EFI_VARIABLE_WRITE_ARCH_PROTOCOL_GUID
DEPENDENCY_END

36
EdkModulePkg/Universal/MonotonicCounter/RuntimeDxe/MonotonicCounter.h Normal file
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/*++
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
MonotonicCounter.h
Abstract:
Produces the Monotonic Counter services as defined in the DXE CIS
--*/
#ifndef _MONOTONIC_COUNTER_DRIVER_H_
#define _MONOTONIC_COUNTER_DRIVER_H_
//
// Function Prototypes
//
EFI_STATUS
EFIAPI
MonotonicCounterDriverInitialize (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
;
#endif

47
EdkModulePkg/Universal/MonotonicCounter/RuntimeDxe/MonotonicCounter.mbd Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<!--
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-->
<ModuleBuildDescription xmlns="http://www.TianoCore.org/2006/Edk2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.TianoCore.org/2006/Edk2.0 http://www.TianoCore.org/2006/Edk2.0/SurfaceArea.xsd">
<MbdHeader>
<BaseName>MonotonicCounter</BaseName>
<Guid>AD608272-D07F-4964-801E-7BD3B7888652</Guid>
<Version>0</Version>
<Description>FIX ME!</Description>
<Copyright>Copyright (c) 2004-2006, Intel Corporation</Copyright>
<License>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
</License>
<Created>2006-03-22 14:36</Created>
</MbdHeader>
<Libraries>
<Library>UefiBootServicesTableLib</Library>
<Library>UefiRuntimeServicesTableLib</Library>
<Library>BaseLib</Library>
<Library>BaseMemoryLib</Library>
<Library>UefiLib</Library>
<Library>UefiDriverEntryPoint</Library>
<Library>DxeReportStatusCodeLib</Library>
<Library>BaseDebugLibReportStatusCode</Library>
<Library>DxeMemoryAllocationLib</Library>
<Library>EdkDxeRuntimeDriverLib</Library>
<Arch ArchType="IPF">
<Library>EdkDxeSalLib</Library>
</Arch>
</Libraries>
<BuildOptions ToolChain="MSFT">
<ImageEntryPoint>_ModuleEntryPoint</ImageEntryPoint>
</BuildOptions>
</ModuleBuildDescription>

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EdkModulePkg/Universal/MonotonicCounter/RuntimeDxe/MonotonicCounter.msa Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<!--
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-->
<ModuleSurfaceArea xmlns="http://www.TianoCore.org/2006/Edk2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.TianoCore.org/2006/Edk2.0 http://www.TianoCore.org/2006/Edk2.0/SurfaceArea.xsd">
<MsaHeader>
<BaseName>MonotonicCounter</BaseName>
<ModuleType>DXE_RUNTIME_DRIVER</ModuleType>
<ComponentType>RT_DRIVER</ComponentType>
<Guid>AD608272-D07F-4964-801E-7BD3B7888652</Guid>
<Version>0</Version>
<Abstract>Component description file for DiskIo module.</Abstract>
<Description>FIX ME!</Description>
<Copyright>Copyright (c) 2004-2006, Intel Corporation</Copyright>
<License>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
</License>
<Specification>0</Specification>
<Created>2006-03-22 14:36</Created>
</MsaHeader>
<LibraryClassDefinitions>
<LibraryClass Usage="ALWAYS_CONSUMED">BaseLib</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">UefiLib</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">UefiDriverEntryPoint</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">DxeRuntimeDriverLib</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">DebugLib</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">MemoryAllocationLib</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">UefiBootServicesTableLib</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">UefiRuntimeServicesTableLib</LibraryClass>
</LibraryClassDefinitions>
<SourceFiles>
<Filename>MonotonicCounter.c</Filename>
<Filename>MonotonicCounter.h</Filename>
<Filename>MonotonicCounter.dxs</Filename>
</SourceFiles>
<Includes>
<PackageName>MdePkg</PackageName>
<PackageName>EdkModulePkg</PackageName>
</Includes>
<Protocols>
<Protocol Usage="ALWAYS_PRODUCED">MonotonicCounter</Protocol>
</Protocols>
<Variables>
<Variable Usage="PRIVATE">
<String>MTC</String>
<Guid>0xeb704011, 0x1402, 0x11d3, 0x8e, 0x77, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b</Guid>
</Variable>
</Variables>
<Externs>
<Extern>
<ModuleEntryPoint>MonotonicCounterDriverInitialize</ModuleEntryPoint>
</Extern>
<Extern>
<SetVirtualAddressMapCallBack></SetVirtualAddressMapCallBack>
<ExitBootServicesCallBack></ExitBootServicesCallBack>
</Extern>
</Externs>
</ModuleSurfaceArea>

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EdkModulePkg/Universal/MonotonicCounter/RuntimeDxe/build.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?><!-- Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.-->
<project basedir="." default="MonotonicCounter"><!--Apply external ANT tasks-->
<taskdef resource="GenBuild.tasks"/>
<taskdef resource="net/sf/antcontrib/antlib.xml"/>
<property environment="env"/>
<property name="WORKSPACE_DIR" value="${env.WORKSPACE}"/>
<import file="${WORKSPACE_DIR}\Tools\Conf\BuildMacro.xml"/><!--MODULE_RELATIVE PATH is relative to PACKAGE_DIR-->
<property name="MODULE_RELATIVE_PATH" value="Universal\MonotonicCounter\RuntimeDxe"/>
<property name="MODULE_DIR" value="${PACKAGE_DIR}\${MODULE_RELATIVE_PATH}"/>
<property name="COMMON_FILE" value="${WORKSPACE_DIR}\Tools\Conf\Common.xml"/>
<target name="MonotonicCounter">
<GenBuild baseName="MonotonicCounter" mbdFilename="${MODULE_DIR}\MonotonicCounter.mbd" msaFilename="${MODULE_DIR}\MonotonicCounter.msa"/>
</target>
<target depends="MonotonicCounter_clean" name="clean"/>
<target depends="MonotonicCounter_cleanall" name="cleanall"/>
<target name="MonotonicCounter_clean">
<OutputDirSetup baseName="MonotonicCounter" mbdFilename="${MODULE_DIR}\MonotonicCounter.mbd" msaFilename="${MODULE_DIR}\MonotonicCounter.msa"/>
<if>
<available file="${DEST_DIR_OUTPUT}\MonotonicCounter_build.xml"/>
<then>
<ant antfile="${DEST_DIR_OUTPUT}\MonotonicCounter_build.xml" target="clean"/>
</then>
</if>
<delete dir="${DEST_DIR_OUTPUT}" excludes="*.xml"/>
</target>
<target name="MonotonicCounter_cleanall">
<OutputDirSetup baseName="MonotonicCounter" mbdFilename="${MODULE_DIR}\MonotonicCounter.mbd" msaFilename="${MODULE_DIR}\MonotonicCounter.msa"/>
<if>
<available file="${DEST_DIR_OUTPUT}\MonotonicCounter_build.xml"/>
<then>
<ant antfile="${DEST_DIR_OUTPUT}\MonotonicCounter_build.xml" target="cleanall"/>
</then>
</if>
<delete dir="${DEST_DIR_OUTPUT}"/>
<delete dir="${DEST_DIR_DEBUG}"/>
<delete>
<fileset dir="${BIN_DIR}" includes="**MonotonicCounter*"/>
</delete>
</target>
</project>