Added 2 new PCDs for minimal and maximal valid year in RTC.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Elvin Li <elvin.li@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16642 6f19259b-4bc3-4df7-8a09-765794883524

PcAtChipsetPkg/PcAtChipsetPkg.dec

@@ -4,7 +4,7 @@
 # This package is designed to public interfaces and implementation which follows
 # PcAt defacto standard.
 #
-# Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials
 # are licensed and made available under the terms and conditions of the BSD License
@@ -117,6 +117,14 @@
   # @Prompt IO APIC base address.
   gPcAtChipsetPkgTokenSpaceGuid.PcdIoApicBaseAddress|0xFEC00000|UINT32|0x0000000C
 
+  ## This PCD specifies the minimal valid year in RTC.
+  # @Prompt Minimal valid year in RTC.
+  gPcAtChipsetPkgTokenSpaceGuid.PcdMinimalValidYear|1998|UINT16|0x0000000D
+
+  ## This PCD specifies the maximal valid year in RTC.
+  # @Prompt Maximal valid year in RTC.
+  gPcAtChipsetPkgTokenSpaceGuid.PcdMaximalValidYear|2099|UINT16|0x0000000E
+  
 [PcdsFixedAtBuild, PcdsPatchableInModule]
   ## Defines the ACPI register set base address.
   #  The invalid 0xFFFF is as its default value. It must be configured to the real value. 

PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c

@@ -1,7 +1,7 @@
 /** @file
   RTC Architectural Protocol GUID as defined in DxeCis 0.96.
 
-Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>
 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
@@ -955,8 +955,8 @@ RtcTimeFieldsValid (
   IN EFI_TIME *Time
   )
 {
-  if (Time->Year < 1998 ||
+  if (Time->Year < PcdGet16 (PcdMinimalValidYear) ||
-      Time->Year > 2099 ||
+      Time->Year > PcdGet16 (PcdMaximalValidYear) ||
       Time->Month < 1 ||
       Time->Month > 12 ||
       (!DayValid (Time)) ||

PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcatRealTimeClockRuntimeDxe.inf

@@ -38,6 +38,7 @@
 [Packages]
   MdePkg/MdePkg.dec
   MdeModulePkg/MdeModulePkg.dec
+  PcAtChipsetPkg/PcAtChipsetPkg.dec
 
 [LibraryClasses]
   UefiRuntimeServicesTableLib
@@ -61,5 +62,8 @@
   
 [Pcd]
   gEfiMdeModulePkgTokenSpaceGuid.PcdRealTimeClockUpdateTimeout  ## CONSUMES
+  gPcAtChipsetPkgTokenSpaceGuid.PcdMinimalValidYear             ## CONSUMES
+  gPcAtChipsetPkgTokenSpaceGuid.PcdMaximalValidYear             ## CONSUMES
+
 [UserExtensions.TianoCore."ExtraFiles"]
   PcRtcExtra.uni