edk2/EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/PeiMemoryAllocationL...

[mirror_edk2.git] / MdeModulePkg / Universal / PcatRealTimeClockRuntimeDxe / PcRtc.c

diff --git a/MdeModulePkg/Universal/PcatRealTimeClockRuntimeDxe/PcRtc.c b/MdeModulePkg/Universal/PcatRealTimeClockRuntimeDxe/PcRtc.c
index a58aee5f8a53d793fdaf72c6d391e78b6f032456..c9bf401e1c214270fd4f35e335ffc9375468ab5d 100644 (file)
--- a/MdeModulePkg/Universal/PcatRealTimeClockRuntimeDxe/PcRtc.c
+++ b/MdeModulePkg/Universal/PcatRealTimeClockRuntimeDxe/PcRtc.c
@@ -1,25 +1,16 @@
-/*++\r
-\r
-Copyright (c) 2006 - 2007, Intel Corporation. All rights reserved. <BR>\r
-This software and associated documentation (if any) is furnished\r
-under a license and may only be used or copied in accordance\r
-with the terms of the license. Except as permitted by such\r
-license, no part of this software or documentation may be\r
-reproduced, stored in a retrieval system, or transmitted in any\r
-form or by any means without the express written consent of\r
-Intel Corporation.\r
-\r
-\r
+/** @file\r
+  RTC Architectural Protocol GUID as defined in DxeCis 0.96.\r
 \r
-Module Name:\r
+Copyright (c) 2006 - 2007, Intel Corporation\r
+All rights reserved. This program and the accompanying materials\r
+are licensed and made available under the terms and conditions of the BSD License\r
+which accompanies this distribution.  The full text of the license may be found at\r
+http://opensource.org/licenses/bsd-license.php\r
 \r
-  PcRtc.c\r
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
 \r
-Abstract:\r
-\r
-  RTC Architectural Protocol GUID as defined in DxeCis 0.96\r
-\r
---*/\r
+**/\r
 \r
 #include "PcRtc.h"\r
 \r
@@ -116,6 +107,8 @@ Returns:
   RTC_REGISTER_D  RegisterD;\r
   UINT8           Century;\r
   EFI_TIME        Time;\r
+  UINTN           DataSize;\r
+  UINT32          TimerVar;\r
 \r
   //\r
   // Acquire RTC Lock to make access to RTC atomic\r
@@ -184,8 +177,9 @@ Returns:
 \r
   //\r
   // Set RTC configuration after get original time\r
+  // The value of bit AIE should be reserved.\r
   //\r
-  RtcWrite (RTC_ADDRESS_REGISTER_B, RTC_INIT_REGISTER_B);\r
+  RtcWrite (RTC_ADDRESS_REGISTER_B, (UINT8)(RTC_INIT_REGISTER_B | (RegisterB.Data & BIT5)));\r
 \r
   //\r
   // Release RTC Lock.\r
@@ -208,6 +202,25 @@ Returns:
     Time.Year   = RTC_INIT_YEAR;\r
   }\r
   //\r
+  // Get the data of Daylight saving and time zone, if they have been\r
+  // stored in NV variable during previous boot.\r
+  //\r
+  DataSize = sizeof (UINT32);\r
+  Status = EfiGetVariable (\r
+             L"TimerVar",\r
+             &gEfiGenericPlatformVariableGuid,\r
+             NULL,\r
+             &DataSize,\r
+             (VOID *) &TimerVar\r
+             );\r
+  if (!EFI_ERROR (Status)) {\r
+    Global->SavedTimeZone = (INT16) TimerVar;\r
+    Global->Daylight      = (UINT8) (TimerVar >> 16);\r
+\r
+    Time.TimeZone = Global->SavedTimeZone;\r
+    Time.Daylight = Global->Daylight;\r
+  }\r
+  //\r
   // Reset time value according to new RTC configuration\r
   //\r
   PcRtcSetTime (&Time, Global);\r
@@ -352,6 +365,7 @@ Routine Description:
   EFI_TIME        RtcTime;\r
   RTC_REGISTER_B  RegisterB;\r
   UINT8           Century;\r
+  UINT32          TimerVar;\r
 \r
   if (Time == NULL) {\r
     return EFI_INVALID_PARAMETER;\r
@@ -426,7 +440,19 @@ Routine Description:
   //\r
   Global->SavedTimeZone = Time->TimeZone;\r
   Global->Daylight      = Time->Daylight;\r
-  return Status;\r
+\r
+  TimerVar = Time->Daylight;\r
+  TimerVar = (UINT32) ((TimerVar << 16) | Time->TimeZone);\r
+  Status =  EfiSetVariable (\r
+              L"TimerVar",\r
+              &gEfiGenericPlatformVariableGuid,\r
+              EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r
+              sizeof (TimerVar),\r
+              &TimerVar\r
+              );\r
+  ASSERT_EFI_ERROR (Status);\r
+\r
+  return EFI_SUCCESS;\r
 }\r
 \r
 EFI_STATUS\r
@@ -1029,8 +1055,23 @@ Returns:
 \r
 --*/\r
 {\r
-  UINT8   DayOfMonth[12] = {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};\r
-  BOOLEAN Adjacent = FALSE;\r
+  UINT8   DayOfMonth[12];\r
+  BOOLEAN Adjacent;\r
+\r
+  DayOfMonth[0] = 31;\r
+  DayOfMonth[1] = 29;\r
+  DayOfMonth[2] = 31;\r
+  DayOfMonth[3] = 30;\r
+  DayOfMonth[4] = 31;\r
+  DayOfMonth[5] = 30;\r
+  DayOfMonth[6] = 31;\r
+  DayOfMonth[7] = 31;\r
+  DayOfMonth[8] = 30;\r
+  DayOfMonth[9] = 31;\r
+  DayOfMonth[10] = 30;\r
+  DayOfMonth[11] = 31;\r
+\r
+  Adjacent = FALSE;\r
 \r
   if (From->Year == To->Year) {\r
     if (From->Month == To->Month) {\r