Add function header and pass ECC tools

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5443 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 454 insertions, 16 deletions

diff --git a/MdeModulePkg/Universal/PCD/Dxe/Pcd.c b/MdeModulePkg/Universal/PCD/Dxe/Pcd.c
index 01a26bb..af846c5 100644
--- a/MdeModulePkg/Universal/PCD/Dxe/Pcd.c
+++ b/MdeModulePkg/Universal/PCD/Dxe/Pcd.c
@@ -1,5 +1,6 @@
 /** @file

-PCD DXE driver

+  PCD DXE driver manage all PCD entry initialized in PEI phase and DXE phase, and

+  produce the implementation of PCD protocol.

 

 Copyright (c) 2006 - 2007, Intel Corporation

 All rights reserved. This program and the accompanying materials

@@ -17,6 +18,16 @@ Module Name: Pcd.c
 

 #include "Service.h"

 

+//

+// Just pre-allocate a memory buffer that is big enough to

+// host all distinct TokenSpace guid in both

+// PEI ExMap and DXE ExMap.

+//

+STATIC EFI_GUID *TmpTokenSpaceBuffer[PEI_EXMAPPING_TABLE_SIZE + DXE_EXMAPPING_TABLE_SIZE] = { 0 };

+

+///

+/// PCD database lock.

+///

 EFI_LOCK mPcdDatabaseLock = EFI_INITIALIZE_LOCK_VARIABLE(TPL_CALLBACK);

 

 PCD_PROTOCOL mPcdInstance = {

@@ -62,8 +73,19 @@ PCD_PROTOCOL mPcdInstance = {
 //

 // Static global to reduce the code size

 //

-static EFI_HANDLE mNewHandle = NULL;

+STATIC EFI_HANDLE mNewHandle = NULL;

 

+/**

+  Main entry for PCD DXE driver.

+  

+  This routine initialize the PCD database and install PCD_PROTOCOL.

+  

+  @param ImageHandle     Image handle for PCD DXE driver.

+  @param SystemTable     Pointer to SystemTable.

+

+  @return Status of gBS->InstallProtocolInterface()

+

+**/

 EFI_STATUS

 EFIAPI

 PcdDxeInit (

@@ -94,7 +116,29 @@ PcdDxeInit (
 

 }

 

+/**

+  Sets the SKU value for subsequent calls to set or get PCD token values.

+

+  SetSku() sets the SKU Id to be used for subsequent calls to set or get PCD values. 

+  SetSku() is normally called only once by the system.

+

+  For each item (token), the database can hold a single value that applies to all SKUs, 

+  or multiple values, where each value is associated with a specific SKU Id. Items with multiple, 

+  SKU-specific values are called SKU enabled. 

+  

+  The SKU Id of zero is reserved as a default. The valid SkuId range is 1 to 255.  

+  For tokens that are not SKU enabled, the system ignores any set SKU Id and works with the 

+  single value for that token. For SKU-enabled tokens, the system will use the SKU Id set by the 

+  last call to SetSku(). If no SKU Id is set or the currently set SKU Id isn't valid for the specified token, 

+  the system uses the default SKU Id. If the system attempts to use the default SKU Id and no value has been 

+  set for that Id, the results are unpredictable.

+

+  @param[in]  SkuId The SKU value that will be used when the PCD service will retrieve and 

+              set values associated with a PCD token.

+

+  @retval VOID

 

+**/

 VOID

 EFIAPI

 DxePcdSetSku (

@@ -106,8 +150,17 @@ DxePcdSetSku (
   return;

 }

 

+/**

+  Retrieves an 8-bit value for a given PCD token.

 

+  Retrieves the current byte-sized value for a PCD token number.  

+  If the TokenNumber is invalid, the results are unpredictable.

+  

+  @param[in]  TokenNumber The PCD token number. 

 

+  @return The UINT8 value.

+  

+**/

 UINT8

 EFIAPI

 DxePcdGet8 (

@@ -117,8 +170,17 @@ DxePcdGet8 (
   return *((UINT8 *) GetWorker (TokenNumber, sizeof (UINT8)));

 }

 

+/**

+  Retrieves an 16-bit value for a given PCD token.

 

+  Retrieves the current 16-bits value for a PCD token number.  

+  If the TokenNumber is invalid, the results are unpredictable.

+  

+  @param[in]  TokenNumber The PCD token number. 

 

+  @return The UINT16 value.

+  

+**/

 UINT16

 EFIAPI

 DxePcdGet16 (

@@ -128,8 +190,17 @@ DxePcdGet16 (
   return ReadUnaligned16 (GetWorker (TokenNumber, sizeof (UINT16)));

 }

 

+/**

+  Retrieves an 32-bit value for a given PCD token.

 

+  Retrieves the current 32-bits value for a PCD token number.  

+  If the TokenNumber is invalid, the results are unpredictable.

+  

+  @param[in]  TokenNumber The PCD token number. 

 

+  @return The UINT32 value.

+  

+**/

 UINT32

 EFIAPI

 DxePcdGet32 (

@@ -139,8 +210,17 @@ DxePcdGet32 (
   return ReadUnaligned32 (GetWorker (TokenNumber, sizeof (UINT32)));

 }

 

+/**

+  Retrieves an 64-bit value for a given PCD token.

 

+  Retrieves the current 64-bits value for a PCD token number.  

+  If the TokenNumber is invalid, the results are unpredictable.

+  

+  @param[in]  TokenNumber The PCD token number. 

 

+  @return The UINT64 value.

+  

+**/

 UINT64

 EFIAPI

 DxePcdGet64 (

@@ -150,8 +230,19 @@ DxePcdGet64 (
   return ReadUnaligned64(GetWorker (TokenNumber, sizeof (UINT64)));

 }

 

+/**

+  Retrieves a pointer to a value for a given PCD token.

 

+  Retrieves the current pointer to the buffer for a PCD token number.  

+  Do not make any assumptions about the alignment of the pointer that 

+  is returned by this function call.  If the TokenNumber is invalid, 

+  the results are unpredictable.

 

+  @param[in]  TokenNumber The PCD token number. 

+

+  @return The pointer to the buffer to be retrived.

+  

+**/

 VOID *

 EFIAPI

 DxePcdGetPtr (

@@ -161,8 +252,19 @@ DxePcdGetPtr (
   return GetWorker (TokenNumber, 0);

 }

 

+/**

+  Retrieves a Boolean value for a given PCD token.

+

+  Retrieves the current boolean value for a PCD token number.  

+  Do not make any assumptions about the alignment of the pointer that 

+  is returned by this function call.  If the TokenNumber is invalid, 

+  the results are unpredictable.

 

+  @param[in]  TokenNumber The PCD token number. 

 

+  @return The Boolean value.

+  

+**/

 BOOLEAN

 EFIAPI

 DxePcdGetBool (

@@ -172,8 +274,17 @@ DxePcdGetBool (
   return *((BOOLEAN *) GetWorker (TokenNumber, sizeof (BOOLEAN)));

 }

 

+/**

+  Retrieves the size of the value for a given PCD token.

 

+  Retrieves the current size of a particular PCD token.  

+  If the TokenNumber is invalid, the results are unpredictable.

 

+  @param[in]  TokenNumber The PCD token number. 

+

+  @return The size of the value for the PCD token.

+  

+**/

 UINTN

 EFIAPI

 DxePcdGetSize (

@@ -226,20 +337,44 @@ DxePcdGetSize (
 

 }

 

+/**

+  Retrieves an 8-bit value for a given PCD token.

+

+  Retrieves the 8-bit value of a particular PCD token.  

+  If the TokenNumber is invalid or the token space

+  specified by Guid does not exist, the results are 

+  unpredictable.

 

+  @param[in]  Guid          The token space for the token number.

+  @param[in]  ExTokenNumber The PCD token number. 

 

+  @return The size 8-bit value for the PCD token.

+  

+**/

 UINT8

 EFIAPI

 DxePcdGet8Ex (

   IN CONST EFI_GUID         *Guid,

-  IN UINTN                 ExTokenNumber

+  IN UINTN                  ExTokenNumber

   )

 {

   return *((UINT8 *) ExGetWorker (Guid, ExTokenNumber, sizeof(UINT8)));

 }

 

+/**

+  Retrieves an 16-bit value for a given PCD token.

+

+  Retrieves the 16-bit value of a particular PCD token.  

+  If the TokenNumber is invalid or the token space

+  specified by Guid does not exist, the results are 

+  unpredictable.

 

+  @param[in]  Guid The token space for the token number.

+  @param[in]  ExTokenNumber The PCD token number. 

 

+  @return The size 16-bit value for the PCD token.

+  

+**/

 UINT16

 EFIAPI

 DxePcdGet16Ex (

@@ -250,8 +385,20 @@ DxePcdGet16Ex (
   return ReadUnaligned16 (ExGetWorker (Guid, ExTokenNumber, sizeof(UINT16)));

 }

 

+/**

+  Retrieves an 32-bit value for a given PCD token.

+

+  Retrieves the 32-bit value of a particular PCD token.  

+  If the TokenNumber is invalid or the token space

+  specified by Guid does not exist, the results are 

+  unpredictable.

 

+  @param[in]  Guid The token space for the token number.

+  @param[in]  ExTokenNumber The PCD token number. 

 

+  @return The size 32-bit value for the PCD token.

+  

+**/

 UINT32

 EFIAPI

 DxePcdGet32Ex (

@@ -262,8 +409,20 @@ DxePcdGet32Ex (
   return ReadUnaligned32 (ExGetWorker (Guid, ExTokenNumber, sizeof(UINT32)));

 }

 

+/**

+  Retrieves an 64-bit value for a given PCD token.

 

+  Retrieves the 64-bit value of a particular PCD token.  

+  If the TokenNumber is invalid or the token space

+  specified by Guid does not exist, the results are 

+  unpredictable.

 

+  @param[in]  Guid The token space for the token number.

+  @param[in]  ExTokenNumber The PCD token number. 

+

+  @return The size 64-bit value for the PCD token.

+  

+**/

 UINT64

 EFIAPI

 DxePcdGet64Ex (

@@ -274,8 +433,20 @@ DxePcdGet64Ex (
   return ReadUnaligned64 (ExGetWorker (Guid, ExTokenNumber, sizeof(UINT64)));

 }

 

+/**

+  Retrieves a pointer to a value for a given PCD token.

+

+  Retrieves the current pointer to the buffer for a PCD token number.  

+  Do not make any assumptions about the alignment of the pointer that 

+  is returned by this function call.  If the TokenNumber is invalid, 

+  the results are unpredictable.

 

+  @param[in]  Guid The token space for the token number.

+  @param[in]  ExTokenNumber The PCD token number. 

 

+  @return The pointer to the buffer to be retrived.

+  

+**/

 VOID *

 EFIAPI

 DxePcdGetPtrEx (

@@ -286,8 +457,20 @@ DxePcdGetPtrEx (
   return  ExGetWorker (Guid, ExTokenNumber, 0);

 }

 

+/**

+  Retrieves an Boolean value for a given PCD token.

 

+  Retrieves the Boolean value of a particular PCD token.  

+  If the TokenNumber is invalid or the token space

+  specified by Guid does not exist, the results are 

+  unpredictable.

 

+  @param[in]  Guid The token space for the token number.

+  @param[in]  ExTokenNumber The PCD token number. 

+

+  @return The size Boolean value for the PCD token.

+  

+**/

 BOOLEAN

 EFIAPI

 DxePcdGetBoolEx (

@@ -298,8 +481,18 @@ DxePcdGetBoolEx (
   return *((BOOLEAN *) ExGetWorker (Guid, ExTokenNumber, sizeof(BOOLEAN)));

 }

 

+/**

+  Retrieves the size of the value for a given PCD token.

+

+  Retrieves the current size of a particular PCD token.  

+  If the TokenNumber is invalid, the results are unpredictable.

 

+  @param[in]  Guid The token space for the token number.

+  @param[in]  ExTokenNumber The PCD token number. 

 

+  @return The size of the value for the PCD token.

+  

+**/

 UINTN

 EFIAPI

 DxePcdGetSizeEx (

@@ -310,8 +503,23 @@ DxePcdGetSizeEx (
   return DxePcdGetSize(GetExPcdTokenNumber (Guid, (UINT32) ExTokenNumber));

 }

 

+/**

+  Sets an 8-bit value for a given PCD token.

+

+  When the PCD service sets a value, it will check to ensure that the 

+  size of the value being set is compatible with the Token's existing definition.  

+  If it is not, an error will be returned.

 

+  @param[in]  TokenNumber The PCD token number. 

+  @param[in]  Value The value to set for the PCD token.

 

+  @retval EFI_SUCCESS  Procedure returned successfully.

+  @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data 

+                                  being set was incompatible with a call to this function.  

+                                  Use GetSize() to retrieve the size of the target data.

+  @retval EFI_NOT_FOUND The PCD service could not find the requested token number.

+  

+**/

 EFI_STATUS

 EFIAPI

 DxePcdSet8 (

@@ -322,8 +530,23 @@ DxePcdSet8 (
   return SetValueWorker (TokenNumber, &Value, sizeof (Value));

 }

 

+/**

+  Sets an 16-bit value for a given PCD token.

 

+  When the PCD service sets a value, it will check to ensure that the 

+  size of the value being set is compatible with the Token's existing definition.  

+  If it is not, an error will be returned.

 

+  @param[in]  TokenNumber The PCD token number. 

+  @param[in]  Value The value to set for the PCD token.

+

+  @retval EFI_SUCCESS  Procedure returned successfully.

+  @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data 

+                                  being set was incompatible with a call to this function.  

+                                  Use GetSize() to retrieve the size of the target data.

+  @retval EFI_NOT_FOUND The PCD service could not find the requested token number.

+  

+**/

 EFI_STATUS

 EFIAPI

 DxePcdSet16 (

@@ -334,8 +557,23 @@ DxePcdSet16 (
   return SetValueWorker (TokenNumber, &Value, sizeof (Value));

 }

 

+/**

+  Sets an 32-bit value for a given PCD token.

+

+  When the PCD service sets a value, it will check to ensure that the 

+  size of the value being set is compatible with the Token's existing definition.  

+  If it is not, an error will be returned.

 

+  @param[in]  TokenNumber The PCD token number. 

+  @param[in]  Value The value to set for the PCD token.

 

+  @retval EFI_SUCCESS  Procedure returned successfully.

+  @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data 

+                                  being set was incompatible with a call to this function.  

+                                  Use GetSize() to retrieve the size of the target data.

+  @retval EFI_NOT_FOUND The PCD service could not find the requested token number.

+  

+**/

 EFI_STATUS

 EFIAPI

 DxePcdSet32 (

@@ -346,8 +584,23 @@ DxePcdSet32 (
   return SetValueWorker (TokenNumber, &Value, sizeof (Value));

 }

 

+/**

+  Sets an 64-bit value for a given PCD token.

 

+  When the PCD service sets a value, it will check to ensure that the 

+  size of the value being set is compatible with the Token's existing definition.  

+  If it is not, an error will be returned.

 

+  @param[in]  TokenNumber The PCD token number. 

+  @param[in]  Value The value to set for the PCD token.

+

+  @retval EFI_SUCCESS  Procedure returned successfully.

+  @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data 

+                                  being set was incompatible with a call to this function.  

+                                  Use GetSize() to retrieve the size of the target data.

+  @retval EFI_NOT_FOUND The PCD service could not find the requested token number.

+  

+**/

 EFI_STATUS

 EFIAPI

 DxePcdSet64 (

@@ -358,8 +611,27 @@ DxePcdSet64 (
   return SetValueWorker (TokenNumber, &Value, sizeof (Value));

 }

 

-

-

+/**

+  Sets a value of a specified size for a given PCD token.

+

+  When the PCD service sets a value, it will check to ensure that the 

+  size of the value being set is compatible with the Token's existing definition.  

+  If it is not, an error will be returned.

+

+  @param[in]  TokenNumber The PCD token number. 

+  @param[in, out] SizeOfBuffer A pointer to the length of the value being set for the PCD token.  

+                              On input, if the SizeOfValue is greater than the maximum size supported 

+                              for this TokenNumber then the output value of SizeOfValue will reflect 

+                              the maximum size supported for this TokenNumber.

+  @param[in]  Buffer The buffer to set for the PCD token.

+

+  @retval EFI_SUCCESS  Procedure returned successfully.

+  @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data 

+                                  being set was incompatible with a call to this function.  

+                                  Use GetSize() to retrieve the size of the target data.

+  @retval EFI_NOT_FOUND The PCD service could not find the requested token number.

+  

+**/

 EFI_STATUS

 EFIAPI

 DxePcdSetPtr (

@@ -371,8 +643,23 @@ DxePcdSetPtr (
   return SetWorker (TokenNumber, Buffer, SizeOfBuffer, TRUE);

 }

 

+/**

+  Sets an Boolean value for a given PCD token.

 

+  When the PCD service sets a value, it will check to ensure that the 

+  size of the value being set is compatible with the Token's existing definition.  

+  If it is not, an error will be returned.

 

+  @param[in]  TokenNumber The PCD token number. 

+  @param[in]  Value The value to set for the PCD token.

+

+  @retval EFI_SUCCESS  Procedure returned successfully.

+  @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data 

+                                  being set was incompatible with a call to this function.  

+                                  Use GetSize() to retrieve the size of the target data.

+  @retval EFI_NOT_FOUND The PCD service could not find the requested token number.

+  

+**/

 EFI_STATUS

 EFIAPI

 DxePcdSetBool (

@@ -383,8 +670,24 @@ DxePcdSetBool (
   return SetValueWorker (TokenNumber, &Value, sizeof (Value));

 }

 

+/**

+  Sets an 8-bit value for a given PCD token.

+

+  When the PCD service sets a value, it will check to ensure that the 

+  size of the value being set is compatible with the Token's existing definition.  

+  If it is not, an error will be returned.

 

+  @param[in]  Guid The 128-bit unique value that designates the namespace from which to extract the value.

+  @param[in]  ExTokenNumber The PCD token number. 

+  @param[in]  Value The value to set for the PCD token.

 

+  @retval EFI_SUCCESS  Procedure returned successfully.

+  @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data 

+                                  being set was incompatible with a call to this function.  

+                                  Use GetSize() to retrieve the size of the target data.

+  @retval EFI_NOT_FOUND The PCD service could not find the requested token number.

+  

+**/

 EFI_STATUS

 EFIAPI

 DxePcdSet8Ex (

@@ -396,8 +699,24 @@ DxePcdSet8Ex (
   return  ExSetValueWorker (ExTokenNumber, Guid, &Value, sizeof (Value));

 }

 

+/**

+  Sets an 16-bit value for a given PCD token.

 

+  When the PCD service sets a value, it will check to ensure that the 

+  size of the value being set is compatible with the Token's existing definition.  

+  If it is not, an error will be returned.

 

+  @param[in]  Guid The 128-bit unique value that designates the namespace from which to extract the value.

+  @param[in]  ExTokenNumber The PCD token number. 

+  @param[in]  Value The value to set for the PCD token.

+

+  @retval EFI_SUCCESS  Procedure returned successfully.

+  @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data 

+                                  being set was incompatible with a call to this function.  

+                                  Use GetSize() to retrieve the size of the target data.

+  @retval EFI_NOT_FOUND The PCD service could not find the requested token number.

+  

+**/

 EFI_STATUS

 EFIAPI

 DxePcdSet16Ex (

@@ -409,8 +728,24 @@ DxePcdSet16Ex (
   return  ExSetValueWorker (ExTokenNumber, Guid, &Value, sizeof (Value));

 }

 

+/**

+  Sets an 32-bit value for a given PCD token.

+

+  When the PCD service sets a value, it will check to ensure that the 

+  size of the value being set is compatible with the Token's existing definition.  

+  If it is not, an error will be returned.

 

+  @param[in]  Guid The 128-bit unique value that designates the namespace from which to extract the value.

+  @param[in]  ExTokenNumber The PCD token number. 

+  @param[in]  Value The value to set for the PCD token.

 

+  @retval EFI_SUCCESS  Procedure returned successfully.

+  @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data 

+                                  being set was incompatible with a call to this function.  

+                                  Use GetSize() to retrieve the size of the target data.

+  @retval EFI_NOT_FOUND The PCD service could not find the requested token number.

+  

+**/

 EFI_STATUS

 EFIAPI

 DxePcdSet32Ex (

@@ -422,8 +757,24 @@ DxePcdSet32Ex (
   return  ExSetValueWorker (ExTokenNumber, Guid, &Value, sizeof (Value));

 }

 

+/**

+  Sets an 64-bit value for a given PCD token.

+

+  When the PCD service sets a value, it will check to ensure that the 

+  size of the value being set is compatible with the Token's existing definition.  

+  If it is not, an error will be returned.

 

+  @param[in]  Guid The 128-bit unique value that designates the namespace from which to extract the value.

+  @param[in]  ExTokenNumber The PCD token number. 

+  @param[in]  Value The value to set for the PCD token.

 

+  @retval EFI_SUCCESS  Procedure returned successfully.

+  @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data 

+                                  being set was incompatible with a call to this function.  

+                                  Use GetSize() to retrieve the size of the target data.

+  @retval EFI_NOT_FOUND The PCD service could not find the requested token number.

+  

+**/

 EFI_STATUS

 EFIAPI

 DxePcdSet64Ex (

@@ -435,8 +786,28 @@ DxePcdSet64Ex (
   return  ExSetValueWorker (ExTokenNumber, Guid, &Value, sizeof (Value));

 }

 

-

-

+/**

+  Sets a value of a specified size for a given PCD token.

+

+  When the PCD service sets a value, it will check to ensure that the 

+  size of the value being set is compatible with the Token's existing definition.  

+  If it is not, an error will be returned.

+

+  @param[in]  Guid The 128-bit unique value that designates the namespace from which to extract the value.

+  @param[in]  ExTokenNumber The PCD token number. 

+  @param[in, out] SizeOfBuffer A pointer to the length of the value being set for the PCD token.  

+                              On input, if the SizeOfValue is greater than the maximum size supported 

+                              for this TokenNumber then the output value of SizeOfValue will reflect 

+                              the maximum size supported for this TokenNumber.

+  @param[in]  Buffer The buffer to set for the PCD token.

+

+  @retval EFI_SUCCESS  Procedure returned successfully.

+  @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data 

+                                  being set was incompatible with a call to this function.  

+                                  Use GetSize() to retrieve the size of the target data.

+  @retval EFI_NOT_FOUND The PCD service could not find the requested token number.

+  

+**/

 EFI_STATUS

 EFIAPI

 DxePcdSetPtrEx (

@@ -449,8 +820,24 @@ DxePcdSetPtrEx (
   return  ExSetWorker(ExTokenNumber, Guid, Buffer, SizeOfBuffer, TRUE);

 }

 

+/**

+  Sets an Boolean value for a given PCD token.

 

+  When the PCD service sets a value, it will check to ensure that the 

+  size of the value being set is compatible with the Token's existing definition.  

+  If it is not, an error will be returned.

 

+  @param[in]  Guid The 128-bit unique value that designates the namespace from which to extract the value.

+  @param[in]  ExTokenNumber The PCD token number. 

+  @param[in]  Value The value to set for the PCD token.

+

+  @retval EFI_SUCCESS  Procedure returned successfully.

+  @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data 

+                                  being set was incompatible with a call to this function.  

+                                  Use GetSize() to retrieve the size of the target data.

+  @retval EFI_NOT_FOUND The PCD service could not find the requested token number.

+  

+**/

 EFI_STATUS

 EFIAPI

 DxePcdSetBoolEx (

@@ -462,9 +849,18 @@ DxePcdSetBoolEx (
   return  ExSetValueWorker (ExTokenNumber, Guid, &Value, sizeof (Value));

 }

 

+/**

+  Specifies a function to be called anytime the value of a designated token is changed.

 

+  @param[in]  Guid The 128-bit unique value that designates the namespace from which to extract the value.

+  @param[in]  TokenNumber The PCD token number. 

+  @param[in]  CallBackFunction The function prototype called when the value associated with the CallBackToken is set.  

 

+  @retval EFI_SUCCESS  The PCD service has successfully established a call event 

+                        for the CallBackToken requested.

+  @retval EFI_NOT_FOUND The PCD service could not find the referenced token number.

 

+**/

 EFI_STATUS

 EFIAPI

 DxeRegisterCallBackOnSet (

@@ -489,8 +885,18 @@ DxeRegisterCallBackOnSet (
   return Status;

 }

 

+/**

+  Cancels a previously set callback function for a particular PCD token number.

 

+  @param[in]  Guid The 128-bit unique value that designates the namespace from which to extract the value.

+  @param[in]  TokenNumber The PCD token number. 

+  @param[in]  CallBackFunction The function prototype called when the value associated with the CallBackToken is set.  

 

+  @retval EFI_SUCCESS  The PCD service has successfully established a call event 

+                        for the CallBackToken requested.

+  @retval EFI_NOT_FOUND The PCD service could not find the referenced token number.

+

+**/

 EFI_STATUS

 EFIAPI

 DxeUnRegisterCallBackOnSet (

@@ -515,8 +921,24 @@ DxeUnRegisterCallBackOnSet (
   return Status;

 }

 

+/**

+  Retrieves the next valid PCD token for a given namespace.

 

+  @param[in]      Guid          The 128-bit unique value that designates the namespace from which to extract the value.

+  @param[in, out]  TokenNumber   A pointer to the PCD token number to use to find the subsequent token number.  

+                                If the input token namespace or token number does not exist on the platform, 

+                                an error is returned and the value of *TokenNumber is undefined. To retrieve the "first" token, 

+                                have the pointer reference a TokenNumber value of 0. If the input token number is 0 and 

+                                there is no valid token number for this token namespace,  *TokenNumber will be assigned to 

+                                0 and the function return EFI_SUCCESS. If the token number is the last valid token number, 

+                                *TokenNumber will be assigned to 0 and the function return EFI_SUCCESS.

 

+  @retval EFI_SUCCESS  The PCD service retrieved the next valid token number. Or the input token number 

+                        is already the last valid token number in the PCD database. 

+                        In the later case, *TokenNumber is updated with the value of 0.

+  @retval EFI_NOT_FOUND If this input token number and token namespace does not exist on the platform.

+

+**/

 EFI_STATUS

 EFIAPI

 DxePcdGetNextToken (

@@ -596,7 +1018,16 @@ DxePcdGetNextToken (
   return Status;

 }

 

-STATIC

+/**

+  Get all token space guid table which is different with given token space guid.

+

+  @param ExMapTableSize  The size of guid table

+  @param ExMapTable      Token space guid table that want to be scaned.

+  @param GuidTable       Guid table

+

+  @return all token space guid table which is different with given token space guid.

+

+**/

 EFI_GUID **

 GetDistinctTokenSpace (

   IN OUT    UINTN             *ExMapTableSize,

@@ -633,13 +1064,21 @@ GetDistinctTokenSpace (
     

 }

   

-//

-// Just pre-allocate a memory buffer that is big enough to

-// host all distinct TokenSpace guid in both

-// PEI ExMap and DXE ExMap.

-//

-STATIC EFI_GUID *TmpTokenSpaceBuffer[PEI_EXMAPPING_TABLE_SIZE + DXE_EXMAPPING_TABLE_SIZE] = { 0 };

-

+/**

+  Get next token space in PCD database according to given token space guid.

+  

+  This routine is enable only when feature flag PCD PcdDxePcdDatabaseTraverseEnabled 

+  is TRUE.

+  

+  @param Guid            Given token space guid. If NULL, then Guid will be set to 

+                         the first PCD token space in PCD database, If not NULL, then

+                         Guid will be set to next PCD token space.

+

+  @retval EFI_UNSUPPORTED If feature flag PCD PcdDxePcdDatabaseTraverseEnabled is FALSE.

+  @retval EFI_NOT_FOUND   If PCD database has no token space table or can not find given

+                          token space in PCD database.

+  @retval EFI_SUCCESS     Success to get next token space guid.

+**/

 EFI_STATUS

 EFIAPI

 DxePcdGetNextTokenSpace (

@@ -726,7 +1165,6 @@ DxePcdGetNextTokenSpace (
   }

 

   return EFI_NOT_FOUND;

-

 }