add in RealTimeClockRuntimeDxe

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3153 6f19259b-4bc3-4df7-8a09-765794883524

IntelFrameworkModulePkg/PcatCompatible/RealTimeClockRuntimeDxe/Ia32/Ia32PcRtc.c

@@ -0,0 +1,173 @@
+/*++
+
+Copyright (c) 2006, Intel Corporation. All rights reserved. <BR> 
+This software and associated documentation (if any) is furnished
+under a license and may only be used or copied in accordance
+with the terms of the license. Except as permitted by such
+license, no part of this software or documentation may be
+reproduced, stored in a retrieval system, or transmitted in any
+form or by any means without the express written consent of
+Intel Corporation.
+
+
+
+Module Name:
+
+ Ia32PcRtc.c
+
+Abstract:
+
+--*/
+
+#include "PcRtc.h"
+
+static PC_RTC_MODULE_GLOBALS  mModuleGlobal;
+
+EFI_STATUS
+EFIAPI
+PcRtcEfiGetTime (
+  OUT EFI_TIME                *Time,
+  OUT  EFI_TIME_CAPABILITIES  *Capabilities
+  )
+/*++
+
+Routine Description:
+
+  GC_TODO: Add function description
+
+Arguments:
+
+  Time          - GC_TODO: add argument description
+  Capabilities  - GC_TODO: add argument description
+
+Returns:
+
+  GC_TODO: add return values
+
+--*/
+{
+  return PcRtcGetTime (Time, Capabilities, &mModuleGlobal);
+}
+
+EFI_STATUS
+EFIAPI
+PcRtcEfiSetTime (
+  IN EFI_TIME                *Time
+  )
+/*++
+
+Routine Description:
+
+  GC_TODO: Add function description
+
+Arguments:
+
+  Time  - GC_TODO: add argument description
+
+Returns:
+
+  GC_TODO: add return values
+
+--*/
+{
+  return PcRtcSetTime (Time, &mModuleGlobal);
+}
+
+EFI_STATUS
+EFIAPI
+PcRtcEfiGetWakeupTime (
+  OUT BOOLEAN     *Enabled,
+  OUT BOOLEAN     *Pending,
+  OUT EFI_TIME    *Time
+  )
+/*++
+
+Routine Description:
+
+  GC_TODO: Add function description
+
+Arguments:
+
+  Enabled - GC_TODO: add argument description
+  Pending - GC_TODO: add argument description
+  Time    - GC_TODO: add argument description
+
+Returns:
+
+  GC_TODO: add return values
+
+--*/
+{
+  return PcRtcGetWakeupTime (Enabled, Pending, Time, &mModuleGlobal);
+}
+
+EFI_STATUS
+EFIAPI
+PcRtcEfiSetWakeupTime (
+  IN BOOLEAN      Enabled,
+  OUT EFI_TIME    *Time
+  )
+/*++
+
+Routine Description:
+
+  GC_TODO: Add function description
+
+Arguments:
+
+  Enabled - GC_TODO: add argument description
+  Time    - GC_TODO: add argument description
+
+Returns:
+
+  GC_TODO: add return values
+
+--*/
+{
+  return PcRtcSetWakeupTime (Enabled, Time, &mModuleGlobal);
+}
+
+EFI_STATUS
+EFIAPI
+InitializePcRtc (
+  IN EFI_HANDLE                            ImageHandle,
+  IN EFI_SYSTEM_TABLE                      *SystemTable
+  )
+/*++
+
+Routine Description:
+
+  Arguments:
+
+  
+
+Returns: 
+--*/
+// GC_TODO:    ImageHandle - add argument and description to function comment
+// GC_TODO:    SystemTable - add argument and description to function comment
+{
+  EFI_STATUS  Status;
+  EFI_HANDLE  NewHandle;
+
+  EfiInitializeLock (&mModuleGlobal.RtcLock, TPL_HIGH_LEVEL);
+
+  Status = PcRtcInit (&mModuleGlobal);
+  if (EFI_ERROR (Status)) {
+    return Status;
+  }
+
+  gRT->GetTime       = PcRtcEfiGetTime;
+  gRT->SetTime       = PcRtcEfiSetTime;
+  gRT->GetWakeupTime = PcRtcEfiGetWakeupTime;
+  gRT->SetWakeupTime = PcRtcEfiSetWakeupTime;
+
+  NewHandle = NULL;
+  Status = gBS->InstallMultipleProtocolInterfaces (
+                  &NewHandle,
+                  &gEfiRealTimeClockArchProtocolGuid,
+                  NULL,
+                  NULL
+                  );
+
+  return Status;
+}

IntelFrameworkModulePkg/PcatCompatible/RealTimeClockRuntimeDxe/PcRtc.h

@@ -0,0 +1,514 @@
+/*++
+
+Copyright (c) 2006, Intel Corporation. All rights reserved. 
+This software and associated documentation (if any) is furnished
+under a license and may only be used or copied in accordance
+with the terms of the license. Except as permitted by such
+license, no part of this software or documentation may be
+reproduced, stored in a retrieval system, or transmitted in any
+form or by any means without the express written consent of
+Intel Corporation.
+
+
+Module Name:
+  
+    PcRtc.h
+
+Abstract:
+
+    Include for real time clock driver
+
+Revision History
+
+
+--*/
+
+#ifndef _RTC_H_
+#define _RTC_H_
+
+//
+// The package level header files this module uses
+//
+#include <PiDxe.h>
+//
+// The protocols, PPI and GUID defintions for this module
+//
+#include <Protocol/RealTimeClock.h>
+//
+// The Library classes this module consumes
+//
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/UefiLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/IoLib.h>
+#include <Library/TimerLib.h>
+#include <Library/UefiDriverEntryPoint.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiRuntimeLib.h>
+#include <Library/UefiRuntimeServicesTableLib.h>
+
+
+typedef struct {
+  EFI_LOCK  RtcLock;
+  UINT16    SavedTimeZone;
+  UINT8     Daylight;
+} PC_RTC_MODULE_GLOBALS;
+
+#define PCAT_RTC_ADDRESS_REGISTER 0x70
+#define PCAT_RTC_DATA_REGISTER    0x71
+
+//
+// Dallas DS12C887 Real Time Clock
+//
+#define RTC_ADDRESS_SECONDS           0   // R/W  Range 0..59
+#define RTC_ADDRESS_SECONDS_ALARM     1   // R/W  Range 0..59
+#define RTC_ADDRESS_MINUTES           2   // R/W  Range 0..59
+#define RTC_ADDRESS_MINUTES_ALARM     3   // R/W  Range 0..59
+#define RTC_ADDRESS_HOURS             4   // R/W  Range 1..12 or 0..23 Bit 7 is AM/PM
+#define RTC_ADDRESS_HOURS_ALARM       5   // R/W  Range 1..12 or 0..23 Bit 7 is AM/PM
+#define RTC_ADDRESS_DAY_OF_THE_WEEK   6   // R/W  Range 1..7
+#define RTC_ADDRESS_DAY_OF_THE_MONTH  7   // R/W  Range 1..31
+#define RTC_ADDRESS_MONTH             8   // R/W  Range 1..12
+#define RTC_ADDRESS_YEAR              9   // R/W  Range 0..99
+#define RTC_ADDRESS_REGISTER_A        10  // R/W[0..6]  R0[7]
+#define RTC_ADDRESS_REGISTER_B        11  // R/W
+#define RTC_ADDRESS_REGISTER_C        12  // RO
+#define RTC_ADDRESS_REGISTER_D        13  // RO
+#define RTC_ADDRESS_CENTURY           50  // R/W  Range 19..20 Bit 8 is R/W
+//
+// Date and time initial values.
+// They are used if the RTC values are invalid during driver initialization
+//
+#define RTC_INIT_SECOND 0
+#define RTC_INIT_MINUTE 0
+#define RTC_INIT_HOUR   0
+#define RTC_INIT_DAY    1
+#define RTC_INIT_MONTH  1
+#define RTC_INIT_YEAR   2001
+
+//
+// Register initial values
+//
+#define RTC_INIT_REGISTER_A 0x26
+#define RTC_INIT_REGISTER_B 0x02
+#define RTC_INIT_REGISTER_D 0x0
+
+#pragma pack(1)
+//
+// Register A
+//
+typedef struct {
+  UINT8 RS : 4;   // Rate Selection Bits
+  UINT8 DV : 3;   // Divisor
+  UINT8 UIP : 1;  // Update in progress
+} RTC_REGISTER_A_BITS;
+
+typedef union {
+  RTC_REGISTER_A_BITS Bits;
+  UINT8               Data;
+} RTC_REGISTER_A;
+
+//
+// Register B
+//
+typedef struct {
+  UINT8 DSE : 1;  // 0 - Daylight saving disabled  1 - Daylight savings enabled
+  UINT8 MIL : 1;  // 0 - 12 hour mode              1 - 24 hour mode
+  UINT8 DM : 1;   // 0 - BCD Format                1 - Binary Format
+  UINT8 SQWE : 1; // 0 - Disable SQWE output       1 - Enable SQWE output
+  UINT8 UIE : 1;  // 0 - Update INT disabled       1 - Update INT enabled
+  UINT8 AIE : 1;  // 0 - Alarm INT disabled        1 - Alarm INT Enabled
+  UINT8 PIE : 1;  // 0 - Periodic INT disabled     1 - Periodic INT Enabled
+  UINT8 SET : 1;  // 0 - Normal operation.         1 - Updates inhibited
+} RTC_REGISTER_B_BITS;
+
+typedef union {
+  RTC_REGISTER_B_BITS Bits;
+  UINT8               Data;
+} RTC_REGISTER_B;
+
+//
+// Register C
+//
+typedef struct {
+  UINT8 Reserved : 4; // Read as zero.  Can not be written.
+  UINT8 UF : 1;       // Update End Interrupt Flag
+  UINT8 AF : 1;       // Alarm Interrupt Flag
+  UINT8 PF : 1;       // Periodic Interrupt Flag
+  UINT8 IRQF : 1;     // Iterrupt Request Flag = PF & PIE | AF & AIE | UF & UIE
+} RTC_REGISTER_C_BITS;
+
+typedef union {
+  RTC_REGISTER_C_BITS Bits;
+  UINT8               Data;
+} RTC_REGISTER_C;
+
+//
+// Register D
+//
+typedef struct {
+  UINT8 Reserved : 7; // Read as zero.  Can not be written.
+  UINT8 VRT : 1;      // Valid RAM and Time
+} RTC_REGISTER_D_BITS;
+
+typedef union {
+  RTC_REGISTER_D_BITS Bits;
+  UINT8               Data;
+} RTC_REGISTER_D;
+
+#pragma pack()
+
+EFI_STATUS
+PcRtcInit (
+  IN PC_RTC_MODULE_GLOBALS  *Global
+  )
+/*++
+
+Routine Description:
+
+  GC_TODO: Add function description
+
+Arguments:
+
+  Global  - GC_TODO: add argument description
+
+Returns:
+
+  GC_TODO: add return values
+
+--*/
+;
+
+EFI_STATUS
+PcRtcSetTime (
+  IN EFI_TIME               *Time,
+  IN PC_RTC_MODULE_GLOBALS  *Global
+  )
+/*++
+
+Routine Description:
+
+  GC_TODO: Add function description
+
+Arguments:
+
+  Time    - GC_TODO: add argument description
+  Global  - GC_TODO: add argument description
+
+Returns:
+
+  GC_TODO: add return values
+
+--*/
+;
+
+EFI_STATUS
+PcRtcGetTime (
+  OUT EFI_TIME              *Time,
+  IN  EFI_TIME_CAPABILITIES *Capabilities,
+  IN  PC_RTC_MODULE_GLOBALS *Global
+  )
+/*++
+
+Routine Description:
+
+  GC_TODO: Add function description
+
+Arguments:
+
+  Time          - GC_TODO: add argument description
+  Capabilities  - GC_TODO: add argument description
+  Global        - GC_TODO: add argument description
+
+Returns:
+
+  GC_TODO: add return values
+
+--*/
+;
+
+EFI_STATUS
+PcRtcSetWakeupTime (
+  IN BOOLEAN                Enable,
+  OUT EFI_TIME              *Time,
+  IN  PC_RTC_MODULE_GLOBALS *Global
+  )
+/*++
+
+Routine Description:
+
+  GC_TODO: Add function description
+
+Arguments:
+
+  Enable  - GC_TODO: add argument description
+  Time    - GC_TODO: add argument description
+  Global  - GC_TODO: add argument description
+
+Returns:
+
+  GC_TODO: add return values
+
+--*/
+;
+
+EFI_STATUS
+PcRtcGetWakeupTime (
+  OUT BOOLEAN               *Enabled,
+  OUT BOOLEAN               *Pending,
+  OUT EFI_TIME              *Time,
+  IN  PC_RTC_MODULE_GLOBALS *Global
+  )
+/*++
+
+Routine Description:
+
+  GC_TODO: Add function description
+
+Arguments:
+
+  Enabled - GC_TODO: add argument description
+  Pending - GC_TODO: add argument description
+  Time    - GC_TODO: add argument description
+  Global  - GC_TODO: add argument description
+
+Returns:
+
+  GC_TODO: add return values
+
+--*/
+;
+
+EFI_STATUS
+EFIAPI
+InitializePcRtc (
+  IN EFI_HANDLE                            ImageHandle,
+  IN EFI_SYSTEM_TABLE                      *SystemTable
+  )
+/*++
+
+Routine Description:
+
+  GC_TODO: Add function description
+
+Arguments:
+
+  ImageHandle - GC_TODO: add argument description
+  SystemTable - GC_TODO: add argument description
+
+Returns:
+
+  GC_TODO: add return values
+
+--*/
+;
+
+UINT8
+BcdToDecimal (
+  IN  UINT8 BcdValue
+  )
+/*++
+
+Routine Description:
+
+  GC_TODO: Add function description
+
+Arguments:
+
+  BcdValue  - GC_TODO: add argument description
+
+Returns:
+
+  GC_TODO: add return values
+
+--*/
+;
+
+EFI_STATUS
+RtcTimeFieldsValid (
+  IN EFI_TIME *Time
+  )
+/*++
+
+Routine Description:
+
+  GC_TODO: Add function description
+
+Arguments:
+
+  Time  - GC_TODO: add argument description
+
+Returns:
+
+  GC_TODO: add return values
+
+--*/
+;
+
+UINT8
+DecimaltoBcd (
+  IN  UINT8 DecValue
+  )
+/*++
+
+Routine Description:
+
+  GC_TODO: Add function description
+
+Arguments:
+
+  DecValue  - GC_TODO: add argument description
+
+Returns:
+
+  GC_TODO: add return values
+
+--*/
+;
+
+VOID
+ConvertEfiTimeToRtcTime (
+  IN EFI_TIME       *Time,
+  IN RTC_REGISTER_B RegisterB,
+  IN UINT8          *Century
+  )
+/*++
+
+Routine Description:
+
+  GC_TODO: Add function description
+
+Arguments:
+
+  Time      - GC_TODO: add argument description
+  RegisterB - GC_TODO: add argument description
+  Century   - GC_TODO: add argument description
+
+Returns:
+
+  GC_TODO: add return values
+
+--*/
+;
+
+EFI_STATUS
+RtcTestCenturyRegister (
+  VOID
+  )
+/*++
+
+Routine Description:
+
+  GC_TODO: Add function description
+
+Arguments:
+
+  None
+
+Returns:
+
+  GC_TODO: add return values
+
+--*/
+;
+
+VOID
+ConvertRtcTimeToEfiTime (
+  IN EFI_TIME       *Time,
+  IN RTC_REGISTER_B RegisterB
+  )
+/*++
+
+Routine Description:
+
+  GC_TODO: Add function description
+
+Arguments:
+
+  Time      - GC_TODO: add argument description
+  RegisterB - GC_TODO: add argument description
+
+Returns:
+
+  GC_TODO: add return values
+
+--*/
+;
+
+EFI_STATUS
+RtcWaitToUpdate (
+  UINTN Timeout
+  )
+/*++
+
+Routine Description:
+
+  GC_TODO: Add function description
+
+Arguments:
+
+  Timeout - GC_TODO: add argument description
+
+Returns:
+
+  GC_TODO: add return values
+
+--*/
+;
+
+UINT8
+RtcSaveContext (
+  IN  PC_RTC_MODULE_GLOBALS  *Global
+  )
+/*++
+
+Routine Description:
+
+  GC_TODO: Add function description
+
+Arguments:
+
+  Global  - GC_TODO: add argument description
+
+Returns:
+
+  GC_TODO: add return values
+
+--*/
+;
+
+VOID
+RtcRestoreContext (
+  IN  UINT8                 SavedAddressRegister,
+  IN  PC_RTC_MODULE_GLOBALS *Global
+  )
+/*++
+
+Routine Description:
+
+  GC_TODO: Add function description
+
+Arguments:
+
+  SavedAddressRegister  - GC_TODO: add argument description
+  Global                - GC_TODO: add argument description
+
+Returns:
+
+  GC_TODO: add return values
+
+--*/
+;
+
+BOOLEAN
+DayValid (
+  IN  EFI_TIME  *Time
+  );
+
+BOOLEAN
+IsLeapYear (
+  IN EFI_TIME   *Time
+  );
+
+#endif

IntelFrameworkModulePkg/PcatCompatible/RealTimeClockRuntimeDxe/PcRtc.inf

@@ -0,0 +1,105 @@
+#/** @file
+# PcRtc driver to install EFI_REAL_TIME_CLOCK_ARCH_PROTOCOL.
+#
+# This driver provides GetTime, SetTime, GetWakeupTime, SetWakeupTime services to Runtime Service Table.
+# Copyright (c) 2006 - 2007, Intel Corporation.
+#
+#  All rights reserved.
+#  This software and associated documentation (if any) is furnished
+#  under a license and may only be used or copied in accordance
+#  with the terms of the license. Except as permitted by such
+#  license, no part of this software or documentation may be
+#  reproduced, stored in a retrieval system, or transmitted in any
+#  form or by any means without the express written consent of
+#  Intel Corporation.
+#
+#
+#**/
+
+################################################################################
+#
+# Defines Section - statements that will be processed to create a Makefile.
+#
+################################################################################
+[Defines]
+  INF_VERSION                    = 0x00010005
+  BASE_NAME                      = PcRtc
+  FILE_GUID                      = 378D7B65-8DA9-4773-B6E4-A47826A833E1
+  MODULE_TYPE                    = DXE_RUNTIME_DRIVER
+  VERSION_STRING                 = 1.0
+  EDK_RELEASE_VERSION            = 0x00020000
+  EFI_SPECIFICATION_VERSION      = 0x00020000
+
+  ENTRY_POINT                    = InitializePcRtc
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+#  VALID_ARCHITECTURES           = IA32 X64 EBC
+#
+
+################################################################################
+#
+# Sources Section - list of files that are required for the build to succeed.
+#
+################################################################################
+
+[Sources.common]
+  Ia32/Ia32PcRtc.c
+  PcRtc.c
+  PcRtc.h
+
+
+################################################################################
+#
+# Package Dependency Section - list of Package files that are required for
+#                              this module.
+#
+################################################################################
+
+[Packages]
+  MdePkg/MdePkg.dec
+  IntelFrameworkPkg/IntelFrameworkPkg.dec
+
+
+################################################################################
+#
+# Library Class Section - list of Library Classes that are required for
+#                         this module.
+#
+################################################################################
+
+[LibraryClasses]
+  UefiRuntimeServicesTableLib
+  UefiRuntimeLib
+  UefiBootServicesTableLib
+  UefiDriverEntryPoint
+  TimerLib
+  IoLib
+  BaseMemoryLib
+  UefiLib
+  DebugLib
+  BaseLib
+
+
+################################################################################
+#
+# Protocol C Name Section - list of Protocol and Protocol Notify C Names
+#                           that this module uses or produces.
+#
+################################################################################
+
+[Protocols]
+  gEfiRealTimeClockArchProtocolGuid             # PROTOCOL ALWAYS_PRODUCED
+
+
+################################################################################
+#
+# Dependency Expression Section - list of Dependency expressions that are required for
+#                              this module.
+#
+################################################################################
+
+[Depex]
+  gEfiCpuArchProtocolGuid AND gEfiMetronomeArchProtocolGuid AND gEfiCpuIoProtocolGuid
+

IntelFrameworkModulePkg/PcatCompatible/RealTimeClockRuntimeDxe/PcRtc.msa

@@ -0,0 +1,79 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ModuleSurfaceArea xsi:schemaLocation="http://www.TianoCore.org/2006/Edk2.0  http://www.TianoCore.org/2006/Edk2.0/SurfaceArea.xsd" xmlns="http://www.TianoCore.org/2006/Edk2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+  <MsaHeader>
+    <ModuleName>PcRtc</ModuleName>
+    <ModuleType>DXE_RUNTIME_DRIVER</ModuleType>
+    <GuidValue>378D7B65-8DA9-4773-B6E4-A47826A833E1</GuidValue>
+    <Version>1.0</Version>
+    <Abstract>PcRtc driver to install EFI_REAL_TIME_CLOCK_ARCH_PROTOCOL.</Abstract>
+    <Description>This driver provides GetTime, SetTime, GetWakeupTime, SetWakeupTime services to Runtime Service Table.</Description>
+    <Copyright>Copyright (c) 2006 - 2007, Intel Corporation.</Copyright>
+    <License>All rights reserved.
+      This software and associated documentation (if any) is furnished
+      under a license and may only be used or copied in accordance
+      with the terms of the license. Except as permitted by such
+      license, no part of this software or documentation may be
+      reproduced, stored in a retrieval system, or transmitted in any
+      form or by any means without the express written consent of
+      Intel Corporation.</License>
+    <Specification>FRAMEWORK_BUILD_PACKAGING_SPECIFICATION   0x00000052</Specification>
+  </MsaHeader>
+  <ModuleDefinitions>
+    <SupportedArchitectures>IA32 X64 EBC</SupportedArchitectures>
+    <BinaryModule>false</BinaryModule>
+    <OutputFileBasename>PcRtc</OutputFileBasename>
+  </ModuleDefinitions>
+  <LibraryClassDefinitions>
+    <LibraryClass Usage="ALWAYS_CONSUMED">
+      <Keyword>BaseLib</Keyword>
+    </LibraryClass>
+    <LibraryClass Usage="ALWAYS_CONSUMED">
+      <Keyword>DebugLib</Keyword>
+    </LibraryClass>
+    <LibraryClass Usage="ALWAYS_CONSUMED">
+      <Keyword>UefiLib</Keyword>
+    </LibraryClass>
+    <LibraryClass Usage="ALWAYS_CONSUMED">
+      <Keyword>BaseMemoryLib</Keyword>
+    </LibraryClass>
+    <LibraryClass Usage="ALWAYS_CONSUMED">
+      <Keyword>IoLib</Keyword>
+    </LibraryClass>
+    <LibraryClass Usage="ALWAYS_CONSUMED">
+      <Keyword>TimerLib</Keyword>
+    </LibraryClass>
+    <LibraryClass Usage="ALWAYS_CONSUMED">
+      <Keyword>UefiDriverEntryPoint</Keyword>
+    </LibraryClass>
+    <LibraryClass Usage="ALWAYS_CONSUMED">
+      <Keyword>UefiBootServicesTableLib</Keyword>
+    </LibraryClass>
+    <LibraryClass Usage="ALWAYS_CONSUMED">
+      <Keyword>UefiRuntimeLib</Keyword>
+    </LibraryClass>
+    <LibraryClass Usage="ALWAYS_CONSUMED">
+      <Keyword>UefiRuntimeServicesTableLib</Keyword>
+    </LibraryClass>
+  </LibraryClassDefinitions>
+  <SourceFiles>
+    <Filename>PcRtc.h</Filename>
+    <Filename>PcRtc.c</Filename>
+    <Filename>Ia32PcRtc.dxs</Filename>
+    <Filename>Ia32/Ia32PcRtc.c</Filename>
+  </SourceFiles>
+  <PackageDependencies>
+    <Package PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
+  </PackageDependencies>
+  <Protocols>
+    <Protocol Usage="ALWAYS_PRODUCED">
+      <ProtocolCName>gEfiRealTimeClockArchProtocolGuid</ProtocolCName>
+    </Protocol>
+  </Protocols>
+  <Externs>
+    <Specification>EFI_SPECIFICATION_VERSION 0x00020000</Specification>
+    <Specification>EDK_RELEASE_VERSION 0x00020000</Specification>
+    <Extern>
+      <ModuleEntryPoint>InitializePcRtc</ModuleEntryPoint>
+    </Extern>
+  </Externs>
+</ModuleSurfaceArea>