Fix a bug in DHCP6 driver when using DUID LLT.

[mirror_edk2.git] / PcAtChipsetPkg / PcatRealTimeClockRuntimeDxe / PcRtc.c

diff --git a/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c b/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c
index 882f2ea8cd1ebbde69bdf54b60105a31e9449e65..a77009a21765299e6e9160ed7993367652a21071 100644 (file)
--- a/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c
+++ b/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c
@@ -1,7 +1,7 @@
 /** @file\r
   RTC Architectural Protocol GUID as defined in DxeCis 0.96.\r
 \r
-Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>\r
 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
@@ -141,6 +141,11 @@ PcRtcInit (
   //\r
   Status = RtcWaitToUpdate (PcdGet32 (PcdRealTimeClockUpdateTimeout));\r
   if (EFI_ERROR (Status)) {\r
+    //\r
+    // Set the variable with default value if the RTC is functioning incorrectly.\r
+    //\r
+    Global->SavedTimeZone = EFI_UNSPECIFIED_TIMEZONE;\r
+    Global->Daylight      = 0;\r
     if (!EfiAtRuntime ()) {\r
       EfiReleaseLock (&Global->RtcLock);\r
     }\r
@@ -199,6 +204,13 @@ PcRtcInit (
     Status = RtcTimeFieldsValid (&Time);\r
   }\r
   if (EFI_ERROR (Status)) {\r
+    //\r
+    // Report Status Code to indicate that the RTC has bad date and time\r
+    //\r
+    REPORT_STATUS_CODE (\r
+      EFI_ERROR_CODE | EFI_ERROR_MINOR,\r
+      (EFI_SOFTWARE_DXE_RT_DRIVER | EFI_SW_EC_BAD_DATE_TIME)\r
+      );\r
     Time.Second = RTC_INIT_SECOND;\r
     Time.Minute = RTC_INIT_MINUTE;\r
     Time.Hour   = RTC_INIT_HOUR;\r
@@ -206,6 +218,8 @@ PcRtcInit (
     Time.Month  = RTC_INIT_MONTH;\r
     Time.Year   = RTC_INIT_YEAR;\r
     Time.Nanosecond  = 0;\r
+    Time.TimeZone = EFI_UNSPECIFIED_TIMEZONE;\r
+    Time.Daylight = 0;\r
   }\r
 \r
   //\r
@@ -378,6 +392,26 @@ PcRtcSetTime (
      }\r
     return Status;\r
   }\r
+  \r
+  //\r
+  // Write timezone and daylight to RTC variable\r
+  //\r
+  TimerVar = Time->Daylight;\r
+  TimerVar = (UINT32) ((TimerVar << 16) | (UINT16)(Time->TimeZone));\r
+  Status =  EfiSetVariable (\r
+              L"RTC",\r
+              &gEfiCallerIdGuid,\r
+              EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,\r
+              sizeof (TimerVar),\r
+              &TimerVar\r
+              );\r
+  if (EFI_ERROR (Status)) {\r
+    if (!EfiAtRuntime ()) {\r
+      EfiReleaseLock (&Global->RtcLock);\r
+    }\r
+    return EFI_DEVICE_ERROR;\r
+  }\r
+\r
   //\r
   // Read Register B, and inhibit updates of the RTC\r
   //\r
@@ -413,17 +447,6 @@ PcRtcSetTime (
   Global->SavedTimeZone = Time->TimeZone;\r
   Global->Daylight      = Time->Daylight;\r
 \r
-  TimerVar = Time->Daylight;\r
-  TimerVar = (UINT32) ((TimerVar << 16) | Time->TimeZone);\r
-  Status =  EfiSetVariable (\r
-              L"RTC",\r
-              &gEfiCallerIdGuid,\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
@@ -507,6 +530,7 @@ PcRtcGetWakeupTime (
   //\r
   // Get the alarm info from variable\r
   //\r
+  DataSize = sizeof (EFI_TIME);\r
   Status = EfiGetVariable (\r
               L"RTCALARM",\r
               &gEfiCallerIdGuid,\r
@@ -620,27 +644,13 @@ PcRtcSetWakeupTime (
     return EFI_DEVICE_ERROR;\r
   }\r
   //\r
-  // Read Register B, and inhibit updates of the RTC\r
+  // Read Register B\r
   //\r
-  RegisterB.Data      = RtcRead (RTC_ADDRESS_REGISTER_B);\r
-\r
-  RegisterB.Bits.Set  = 1;\r
-  RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);\r
+  RegisterB.Data = RtcRead (RTC_ADDRESS_REGISTER_B);\r
 \r
   if (Enable) {\r
     ConvertEfiTimeToRtcTime (&RtcTime, RegisterB, &Century);\r
-\r
-    //\r
-    // Set RTC alarm time\r
-    //\r
-    RtcWrite (RTC_ADDRESS_SECONDS_ALARM, RtcTime.Second);\r
-    RtcWrite (RTC_ADDRESS_MINUTES_ALARM, RtcTime.Minute);\r
-    RtcWrite (RTC_ADDRESS_HOURS_ALARM, RtcTime.Hour);\r
-\r
-    RegisterB.Bits.Aie = 1;\r
-\r
   } else {\r
-    RegisterB.Bits.Aie = 0;\r
     //\r
     // if the alarm is disable, record the current setting.\r
     //\r
@@ -653,11 +663,6 @@ PcRtcSetWakeupTime (
     RtcTime.TimeZone = Global->SavedTimeZone;\r
     RtcTime.Daylight = Global->Daylight;\r
   }\r
-  //\r
-  // Allow updates of the RTC registers\r
-  //\r
-  RegisterB.Bits.Set = 0;\r
-  RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);\r
 \r
   //\r
   // Set the Y/M/D info to variable as it has no corresponding hw registers.\r
@@ -670,8 +675,36 @@ PcRtcSetWakeupTime (
               &RtcTime\r
               );\r
   if (EFI_ERROR (Status)) {\r
+    if (!EfiAtRuntime ()) {\r
+      EfiReleaseLock (&Global->RtcLock);\r
+    }\r
     return EFI_DEVICE_ERROR;\r
   }\r
+  \r
+  //\r
+  // Inhibit updates of the RTC\r
+  //\r
+  RegisterB.Bits.Set  = 1;\r
+  RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);\r
+\r
+  if (Enable) {\r
+    //\r
+    // Set RTC alarm time\r
+    //\r
+    RtcWrite (RTC_ADDRESS_SECONDS_ALARM, RtcTime.Second);\r
+    RtcWrite (RTC_ADDRESS_MINUTES_ALARM, RtcTime.Minute);\r
+    RtcWrite (RTC_ADDRESS_HOURS_ALARM, RtcTime.Hour);\r
+\r
+    RegisterB.Bits.Aie = 1;\r
+\r
+  } else {\r
+    RegisterB.Bits.Aie = 0;\r
+  }\r
+  //\r
+  // Allow updates of the RTC registers\r
+  //\r
+  RegisterB.Bits.Set = 0;\r
+  RtcWrite (RTC_ADDRESS_REGISTER_B, RegisterB.Data);\r
 \r
   //\r
   // Release RTC Lock.\r