Updated the copyright year.

[mirror_edk2.git] / EdkModulePkg / Universal / PCD / Dxe / Service.c

diff --git a/EdkModulePkg/Universal/PCD/Dxe/Service.c b/EdkModulePkg/Universal/PCD/Dxe/Service.c
index a4b19878a59fd64bedac70ddb568549e21fad3c9..51e16624efcd51aa35eab70c9c34d12b98a84bfe 100644 (file)
--- a/EdkModulePkg/Universal/PCD/Dxe/Service.c
+++ b/EdkModulePkg/Universal/PCD/Dxe/Service.c
@@ -1,7 +1,7 @@
 /** @file\r
 Private functions used by PCD DXE driver.\r
 \r
-Copyright (c) 2006, Intel Corporation\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
@@ -29,24 +29,31 @@ GetWorker (
 {\r
   UINT32              *LocalTokenNumberTable;\r
   UINT16              *SizeTable;\r
-  BOOLEAN             IsPeiDb;\r
-  UINT32              Offset;\r
   EFI_GUID            *GuidTable;\r
   UINT16              *StringTable;\r
   EFI_GUID            *Guid;\r
   UINT16              *Name;\r
   VARIABLE_HEAD       *VariableHead;\r
   UINT8               *VaraiableDefaultBuffer;\r
-  EFI_STATUS          Status;\r
-  UINTN               DataSize;\r
   UINT8               *Data;\r
   VPD_HEAD            *VpdHead;\r
   UINT8               *PcdDb;\r
-  UINT16              StringTableIdx;      \r
-  UINT32              LocalTokenNumber;\r
+  VOID                *RetPtr;\r
   UINTN               MaxSize;\r
   UINTN               TmpTokenNumber;\r
+  UINTN               DataSize;\r
+  EFI_STATUS          Status;\r
+  UINT32              LocalTokenNumber;\r
+  UINT32              Offset;\r
+  UINT16              StringTableIdx;      \r
+  BOOLEAN             IsPeiDb;\r
 \r
+  //\r
+  // Aquire lock to prevent reentrance from TPL_CALLBACK level\r
+  //\r
+  EfiAcquireLock (&mPcdDatabaseLock);\r
+\r
+  RetPtr = NULL;\r
   //\r
   // TokenNumber Zero is reserved as PCD_INVALID_TOKEN_NUMBER.\r
   // We have to decrement TokenNumber by 1 to make it usable\r
@@ -100,7 +107,8 @@ GetWorker (
   switch (LocalTokenNumber & PCD_TYPE_ALL_SET) {\r
     case PCD_TYPE_VPD:\r
       VpdHead = (VPD_HEAD *) ((UINT8 *) PcdDb + Offset);\r
-      return (VOID *) (UINTN) (FixedPcdGet32(PcdVpdBaseAddress) + VpdHead->Offset);\r
+      RetPtr = (VOID *) (UINTN) (FixedPcdGet32(PcdVpdBaseAddress) + VpdHead->Offset);\r
+      break;\r
       \r
     case PCD_TYPE_HII:\r
       GuidTable   = IsPeiDb ? mPcdDatabase->PeiDb.Init.GuidTable :\r
@@ -134,14 +142,16 @@ GetWorker (
       // Return 1) either the default value specified by Platform Integrator \r
       //        2) Or the value Set by a PCD set operation.\r
       //\r
-      return (VOID *) VaraiableDefaultBuffer;\r
+      RetPtr = (VOID *) VaraiableDefaultBuffer;\r
+      break;\r
 \r
     case PCD_TYPE_STRING:\r
       StringTableIdx = (UINT16) *((UINT8 *) PcdDb + Offset);\r
-      return (VOID *) &StringTable[StringTableIdx];\r
+      RetPtr = (VOID *) &StringTable[StringTableIdx];\r
+      break;\r
 \r
     case PCD_TYPE_DATA:\r
-      return (VOID *) ((UINT8 *) PcdDb + Offset);\r
+      RetPtr = (VOID *) ((UINT8 *) PcdDb + Offset);\r
       break;\r
 \r
     default:\r
@@ -150,9 +160,9 @@ GetWorker (
       \r
   }\r
 \r
-  ASSERT (FALSE);\r
-      \r
-  return NULL;\r
+  EfiReleaseLock (&mPcdDatabaseLock);\r
+  \r
+  return RetPtr;\r
   \r
 }\r
 \r
@@ -560,6 +570,11 @@ SetWorker (
   UINTN               MaxSize;\r
   UINTN               TmpTokenNumber;\r
 \r
+  //\r
+  // Aquire lock to prevent reentrance from TPL_CALLBACK level\r
+  //\r
+  EfiAcquireLock (&mPcdDatabaseLock);\r
+\r
   //\r
   // TokenNumber Zero is reserved as PCD_INVALID_TOKEN_NUMBER.\r
   // We have to decrement TokenNumber by 1 to make it usable\r
@@ -621,20 +636,23 @@ SetWorker (
   switch (LocalTokenNumber & PCD_TYPE_ALL_SET) {\r
     case PCD_TYPE_VPD:\r
       ASSERT (FALSE);\r
-      return EFI_INVALID_PARAMETER;\r
+      Status = EFI_INVALID_PARAMETER;\r
+      break;\r
     \r
     case PCD_TYPE_STRING:\r
       if (SetPtrTypeSize (TmpTokenNumber, Size)) {\r
         CopyMem (&StringTable[*((UINT16 *)InternalData)], Data, *Size);\r
-        return EFI_SUCCESS;\r
+        Status = EFI_SUCCESS;\r
       } else {\r
-        return EFI_INVALID_PARAMETER;\r
+        Status = EFI_INVALID_PARAMETER;\r
       }\r
+      break;\r
 \r
     case PCD_TYPE_HII:\r
       if (PtrType) {\r
         if (!SetPtrTypeSize (TmpTokenNumber, Size)) {\r
-          return EFI_INVALID_PARAMETER;\r
+          Status = EFI_INVALID_PARAMETER;\r
+          break;\r
         }\r
       }\r
       \r
@@ -651,50 +669,55 @@ SetWorker (
 \r
       if (EFI_NOT_FOUND == Status) {\r
         CopyMem (PcdDb + VariableHead->DefaultValueOffset, Data, *Size);\r
-        return EFI_SUCCESS;\r
-      } else {\r
-        return Status;\r
-      }\r
+        Status = EFI_SUCCESS;\r
+      } \r
+      break;\r
       \r
     case PCD_TYPE_DATA:\r
       if (PtrType) {\r
         if (SetPtrTypeSize (TmpTokenNumber, Size)) {\r
           CopyMem (InternalData, Data, *Size);\r
-          return EFI_SUCCESS;\r
+          Status = EFI_SUCCESS;\r
         } else {\r
-          return EFI_INVALID_PARAMETER;\r
+          Status = EFI_INVALID_PARAMETER;\r
         }\r
+        break;\r
       }\r
 \r
+      Status = EFI_SUCCESS;\r
       switch (*Size) {\r
         case sizeof(UINT8):\r
           *((UINT8 *) InternalData) = *((UINT8 *) Data);\r
-          return EFI_SUCCESS;\r
+          break;\r
 \r
         case sizeof(UINT16):\r
           *((UINT16 *) InternalData) = *((UINT16 *) Data);\r
-          return EFI_SUCCESS;\r
+          break;\r
 \r
         case sizeof(UINT32):\r
           *((UINT32 *) InternalData) = *((UINT32 *) Data);\r
-          return EFI_SUCCESS;\r
+          break;\r
 \r
         case sizeof(UINT64):\r
           *((UINT64 *) InternalData) = *((UINT64 *) Data);\r
-          return EFI_SUCCESS;\r
+          break;\r
 \r
         default:\r
           ASSERT (FALSE);\r
-          return EFI_NOT_FOUND;\r
+          Status = EFI_NOT_FOUND;\r
+          break;\r
       }\r
+      break;\r
 \r
     default:\r
       ASSERT (FALSE);\r
+      Status = EFI_NOT_FOUND;\r
       break;\r
     }\r
-      \r
-  ASSERT (FALSE);\r
-  return EFI_NOT_FOUND;\r
+\r
+  EfiReleaseLock (&mPcdDatabaseLock);\r
+  \r
+  return Status;\r
 }\r
 \r
 \r