/** @file\r
-PCD DXE driver\r
+ PCD DXE driver manage all PCD entry initialized in PEI phase and DXE phase, and\r
+ produce the implementation of PCD protocol.\r
\r
Copyright (c) 2006 - 2007, Intel Corporation\r
All rights reserved. This program and the accompanying materials\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
-\r
-Module Name: Pcd.c\r
-\r
**/\r
\r
+#include "Service.h"\r
+\r
//\r
-// Include common header file for this module.\r
+// Just pre-allocate a memory buffer that is big enough to\r
+// host all distinct TokenSpace guid in both\r
+// PEI ExMap and DXE ExMap.\r
//\r
-#include "CommonHeader.h"\r
-\r
-#include "Service.h"\r
+EFI_GUID *TmpTokenSpaceBuffer[PEI_EXMAPPING_TABLE_SIZE + DXE_EXMAPPING_TABLE_SIZE] = { 0 };\r
\r
+///\r
+/// PCD database lock.\r
+///\r
EFI_LOCK mPcdDatabaseLock = EFI_INITIALIZE_LOCK_VARIABLE(TPL_CALLBACK);\r
\r
PCD_PROTOCOL mPcdInstance = {\r
//\r
// Static global to reduce the code size\r
//\r
-static EFI_HANDLE mNewHandle = NULL;\r
+EFI_HANDLE mNewHandle = NULL;\r
+\r
+/**\r
+ Main entry for PCD DXE driver.\r
+ \r
+ This routine initialize the PCD database and install PCD_PROTOCOL.\r
+ \r
+ @param ImageHandle Image handle for PCD DXE driver.\r
+ @param SystemTable Pointer to SystemTable.\r
\r
+ @return Status of gBS->InstallProtocolInterface()\r
+\r
+**/\r
EFI_STATUS\r
EFIAPI\r
PcdDxeInit (\r
\r
}\r
\r
+/**\r
+ Sets the SKU value for subsequent calls to set or get PCD token values.\r
\r
+ SetSku() sets the SKU Id to be used for subsequent calls to set or get PCD values. \r
+ SetSku() is normally called only once by the system.\r
+\r
+ For each item (token), the database can hold a single value that applies to all SKUs, \r
+ or multiple values, where each value is associated with a specific SKU Id. Items with multiple, \r
+ SKU-specific values are called SKU enabled. \r
+ \r
+ The SKU Id of zero is reserved as a default. The valid SkuId range is 1 to 255. \r
+ For tokens that are not SKU enabled, the system ignores any set SKU Id and works with the \r
+ single value for that token. For SKU-enabled tokens, the system will use the SKU Id set by the \r
+ last call to SetSku(). If no SKU Id is set or the currently set SKU Id isn't valid for the specified token, \r
+ the system uses the default SKU Id. If the system attempts to use the default SKU Id and no value has been \r
+ set for that Id, the results are unpredictable.\r
+\r
+ @param[in] SkuId The SKU value that will be used when the PCD service will retrieve and \r
+ set values associated with a PCD token.\r
+\r
+**/\r
VOID\r
EFIAPI\r
DxePcdSetSku (\r
return;\r
}\r
\r
+/**\r
+ Retrieves an 8-bit value for a given PCD token.\r
\r
+ Retrieves the current byte-sized value for a PCD token number. \r
+ If the TokenNumber is invalid, the results are unpredictable.\r
+ \r
+ @param[in] TokenNumber The PCD token number. \r
\r
+ @return The UINT8 value.\r
+ \r
+**/\r
UINT8\r
EFIAPI\r
DxePcdGet8 (\r
return *((UINT8 *) GetWorker (TokenNumber, sizeof (UINT8)));\r
}\r
\r
+/**\r
+ Retrieves an 16-bit value for a given PCD token.\r
\r
+ Retrieves the current 16-bits value for a PCD token number. \r
+ If the TokenNumber is invalid, the results are unpredictable.\r
+ \r
+ @param[in] TokenNumber The PCD token number. \r
\r
+ @return The UINT16 value.\r
+ \r
+**/\r
UINT16\r
EFIAPI\r
DxePcdGet16 (\r
return ReadUnaligned16 (GetWorker (TokenNumber, sizeof (UINT16)));\r
}\r
\r
+/**\r
+ Retrieves an 32-bit value for a given PCD token.\r
\r
+ Retrieves the current 32-bits value for a PCD token number. \r
+ If the TokenNumber is invalid, the results are unpredictable.\r
+ \r
+ @param[in] TokenNumber The PCD token number. \r
\r
+ @return The UINT32 value.\r
+ \r
+**/\r
UINT32\r
EFIAPI\r
DxePcdGet32 (\r
return ReadUnaligned32 (GetWorker (TokenNumber, sizeof (UINT32)));\r
}\r
\r
+/**\r
+ Retrieves an 64-bit value for a given PCD token.\r
\r
+ Retrieves the current 64-bits value for a PCD token number. \r
+ If the TokenNumber is invalid, the results are unpredictable.\r
+ \r
+ @param[in] TokenNumber The PCD token number. \r
\r
+ @return The UINT64 value.\r
+ \r
+**/\r
UINT64\r
EFIAPI\r
DxePcdGet64 (\r
return ReadUnaligned64(GetWorker (TokenNumber, sizeof (UINT64)));\r
}\r
\r
+/**\r
+ Retrieves a pointer to a value for a given PCD token.\r
\r
+ Retrieves the current pointer to the buffer for a PCD token number. \r
+ Do not make any assumptions about the alignment of the pointer that \r
+ is returned by this function call. If the TokenNumber is invalid, \r
+ the results are unpredictable.\r
\r
+ @param[in] TokenNumber The PCD token number. \r
+\r
+ @return The pointer to the buffer to be retrived.\r
+ \r
+**/\r
VOID *\r
EFIAPI\r
DxePcdGetPtr (\r
return GetWorker (TokenNumber, 0);\r
}\r
\r
+/**\r
+ Retrieves a Boolean value for a given PCD token.\r
+\r
+ Retrieves the current boolean value for a PCD token number. \r
+ Do not make any assumptions about the alignment of the pointer that \r
+ is returned by this function call. If the TokenNumber is invalid, \r
+ the results are unpredictable.\r
\r
+ @param[in] TokenNumber The PCD token number. \r
\r
+ @return The Boolean value.\r
+ \r
+**/\r
BOOLEAN\r
EFIAPI\r
DxePcdGetBool (\r
return *((BOOLEAN *) GetWorker (TokenNumber, sizeof (BOOLEAN)));\r
}\r
\r
+/**\r
+ Retrieves the size of the value for a given PCD token.\r
\r
+ Retrieves the current size of a particular PCD token. \r
+ If the TokenNumber is invalid, the results are unpredictable.\r
\r
+ @param[in] TokenNumber The PCD token number. \r
+\r
+ @return The size of the value for the PCD token.\r
+ \r
+**/\r
UINTN\r
EFIAPI\r
DxePcdGetSize (\r
\r
}\r
\r
+/**\r
+ Retrieves an 8-bit value for a given PCD token.\r
+\r
+ Retrieves the 8-bit value of a particular PCD token. \r
+ If the TokenNumber is invalid or the token space\r
+ specified by Guid does not exist, the results are \r
+ unpredictable.\r
\r
+ @param[in] Guid The token space for the token number.\r
+ @param[in] ExTokenNumber The PCD token number. \r
\r
+ @return The size 8-bit value for the PCD token.\r
+ \r
+**/\r
UINT8\r
EFIAPI\r
DxePcdGet8Ex (\r
IN CONST EFI_GUID *Guid,\r
- IN UINTN ExTokenNumber\r
+ IN UINTN ExTokenNumber\r
)\r
{\r
return *((UINT8 *) ExGetWorker (Guid, ExTokenNumber, sizeof(UINT8)));\r
}\r
\r
+/**\r
+ Retrieves an 16-bit value for a given PCD token.\r
+\r
+ Retrieves the 16-bit value of a particular PCD token. \r
+ If the TokenNumber is invalid or the token space\r
+ specified by Guid does not exist, the results are \r
+ unpredictable.\r
\r
+ @param[in] Guid The token space for the token number.\r
+ @param[in] ExTokenNumber The PCD token number. \r
\r
+ @return The size 16-bit value for the PCD token.\r
+ \r
+**/\r
UINT16\r
EFIAPI\r
DxePcdGet16Ex (\r
return ReadUnaligned16 (ExGetWorker (Guid, ExTokenNumber, sizeof(UINT16)));\r
}\r
\r
+/**\r
+ Retrieves an 32-bit value for a given PCD token.\r
+\r
+ Retrieves the 32-bit value of a particular PCD token. \r
+ If the TokenNumber is invalid or the token space\r
+ specified by Guid does not exist, the results are \r
+ unpredictable.\r
\r
+ @param[in] Guid The token space for the token number.\r
+ @param[in] ExTokenNumber The PCD token number. \r
\r
+ @return The size 32-bit value for the PCD token.\r
+ \r
+**/\r
UINT32\r
EFIAPI\r
DxePcdGet32Ex (\r
return ReadUnaligned32 (ExGetWorker (Guid, ExTokenNumber, sizeof(UINT32)));\r
}\r
\r
+/**\r
+ Retrieves an 64-bit value for a given PCD token.\r
\r
+ Retrieves the 64-bit value of a particular PCD token. \r
+ If the TokenNumber is invalid or the token space\r
+ specified by Guid does not exist, the results are \r
+ unpredictable.\r
\r
+ @param[in] Guid The token space for the token number.\r
+ @param[in] ExTokenNumber The PCD token number. \r
+\r
+ @return The size 64-bit value for the PCD token.\r
+ \r
+**/\r
UINT64\r
EFIAPI\r
DxePcdGet64Ex (\r
return ReadUnaligned64 (ExGetWorker (Guid, ExTokenNumber, sizeof(UINT64)));\r
}\r
\r
+/**\r
+ Retrieves a pointer to a value for a given PCD token.\r
+\r
+ Retrieves the current pointer to the buffer for a PCD token number. \r
+ Do not make any assumptions about the alignment of the pointer that \r
+ is returned by this function call. If the TokenNumber is invalid, \r
+ the results are unpredictable.\r
\r
+ @param[in] Guid The token space for the token number.\r
+ @param[in] ExTokenNumber The PCD token number. \r
\r
+ @return The pointer to the buffer to be retrived.\r
+ \r
+**/\r
VOID *\r
EFIAPI\r
DxePcdGetPtrEx (\r
return ExGetWorker (Guid, ExTokenNumber, 0);\r
}\r
\r
+/**\r
+ Retrieves an Boolean value for a given PCD token.\r
\r
+ Retrieves the Boolean value of a particular PCD token. \r
+ If the TokenNumber is invalid or the token space\r
+ specified by Guid does not exist, the results are \r
+ unpredictable.\r
\r
+ @param[in] Guid The token space for the token number.\r
+ @param[in] ExTokenNumber The PCD token number. \r
+\r
+ @return The size Boolean value for the PCD token.\r
+ \r
+**/\r
BOOLEAN\r
EFIAPI\r
DxePcdGetBoolEx (\r
return *((BOOLEAN *) ExGetWorker (Guid, ExTokenNumber, sizeof(BOOLEAN)));\r
}\r
\r
+/**\r
+ Retrieves the size of the value for a given PCD token.\r
+\r
+ Retrieves the current size of a particular PCD token. \r
+ If the TokenNumber is invalid, the results are unpredictable.\r
\r
+ @param[in] Guid The token space for the token number.\r
+ @param[in] ExTokenNumber The PCD token number. \r
\r
+ @return The size of the value for the PCD token.\r
+ \r
+**/\r
UINTN\r
EFIAPI\r
DxePcdGetSizeEx (\r
return DxePcdGetSize(GetExPcdTokenNumber (Guid, (UINT32) ExTokenNumber));\r
}\r
\r
+/**\r
+ Sets an 8-bit value for a given PCD token.\r
+\r
+ When the PCD service sets a value, it will check to ensure that the \r
+ size of the value being set is compatible with the Token's existing definition. \r
+ If it is not, an error will be returned.\r
\r
+ @param[in] TokenNumber The PCD token number. \r
+ @param[in] Value The value to set for the PCD token.\r
\r
+ @retval EFI_SUCCESS Procedure returned successfully.\r
+ @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data \r
+ being set was incompatible with a call to this function. \r
+ Use GetSize() to retrieve the size of the target data.\r
+ @retval EFI_NOT_FOUND The PCD service could not find the requested token number.\r
+ \r
+**/\r
EFI_STATUS\r
EFIAPI\r
DxePcdSet8 (\r
return SetValueWorker (TokenNumber, &Value, sizeof (Value));\r
}\r
\r
+/**\r
+ Sets an 16-bit value for a given PCD token.\r
\r
+ When the PCD service sets a value, it will check to ensure that the \r
+ size of the value being set is compatible with the Token's existing definition. \r
+ If it is not, an error will be returned.\r
\r
+ @param[in] TokenNumber The PCD token number. \r
+ @param[in] Value The value to set for the PCD token.\r
+\r
+ @retval EFI_SUCCESS Procedure returned successfully.\r
+ @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data \r
+ being set was incompatible with a call to this function. \r
+ Use GetSize() to retrieve the size of the target data.\r
+ @retval EFI_NOT_FOUND The PCD service could not find the requested token number.\r
+ \r
+**/\r
EFI_STATUS\r
EFIAPI\r
DxePcdSet16 (\r
return SetValueWorker (TokenNumber, &Value, sizeof (Value));\r
}\r
\r
+/**\r
+ Sets an 32-bit value for a given PCD token.\r
+\r
+ When the PCD service sets a value, it will check to ensure that the \r
+ size of the value being set is compatible with the Token's existing definition. \r
+ If it is not, an error will be returned.\r
\r
+ @param[in] TokenNumber The PCD token number. \r
+ @param[in] Value The value to set for the PCD token.\r
\r
+ @retval EFI_SUCCESS Procedure returned successfully.\r
+ @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data \r
+ being set was incompatible with a call to this function. \r
+ Use GetSize() to retrieve the size of the target data.\r
+ @retval EFI_NOT_FOUND The PCD service could not find the requested token number.\r
+ \r
+**/\r
EFI_STATUS\r
EFIAPI\r
DxePcdSet32 (\r
return SetValueWorker (TokenNumber, &Value, sizeof (Value));\r
}\r
\r
+/**\r
+ Sets an 64-bit value for a given PCD token.\r
\r
+ When the PCD service sets a value, it will check to ensure that the \r
+ size of the value being set is compatible with the Token's existing definition. \r
+ If it is not, an error will be returned.\r
\r
+ @param[in] TokenNumber The PCD token number. \r
+ @param[in] Value The value to set for the PCD token.\r
+\r
+ @retval EFI_SUCCESS Procedure returned successfully.\r
+ @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data \r
+ being set was incompatible with a call to this function. \r
+ Use GetSize() to retrieve the size of the target data.\r
+ @retval EFI_NOT_FOUND The PCD service could not find the requested token number.\r
+ \r
+**/\r
EFI_STATUS\r
EFIAPI\r
DxePcdSet64 (\r
return SetValueWorker (TokenNumber, &Value, sizeof (Value));\r
}\r
\r
-\r
-\r
+/**\r
+ Sets a value of a specified size for a given PCD token.\r
+\r
+ When the PCD service sets a value, it will check to ensure that the \r
+ size of the value being set is compatible with the Token's existing definition. \r
+ If it is not, an error will be returned.\r
+\r
+ @param[in] TokenNumber The PCD token number. \r
+ @param[in, out] SizeOfBuffer A pointer to the length of the value being set for the PCD token. \r
+ On input, if the SizeOfValue is greater than the maximum size supported \r
+ for this TokenNumber then the output value of SizeOfValue will reflect \r
+ the maximum size supported for this TokenNumber.\r
+ @param[in] Buffer The buffer to set for the PCD token.\r
+\r
+ @retval EFI_SUCCESS Procedure returned successfully.\r
+ @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data \r
+ being set was incompatible with a call to this function. \r
+ Use GetSize() to retrieve the size of the target data.\r
+ @retval EFI_NOT_FOUND The PCD service could not find the requested token number.\r
+ \r
+**/\r
EFI_STATUS\r
EFIAPI\r
DxePcdSetPtr (\r
return SetWorker (TokenNumber, Buffer, SizeOfBuffer, TRUE);\r
}\r
\r
+/**\r
+ Sets an Boolean value for a given PCD token.\r
+\r
+ When the PCD service sets a value, it will check to ensure that the \r
+ size of the value being set is compatible with the Token's existing definition. \r
+ If it is not, an error will be returned.\r
\r
+ @param[in] TokenNumber The PCD token number. \r
+ @param[in] Value The value to set for the PCD token.\r
\r
+ @retval EFI_SUCCESS Procedure returned successfully.\r
+ @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data \r
+ being set was incompatible with a call to this function. \r
+ Use GetSize() to retrieve the size of the target data.\r
+ @retval EFI_NOT_FOUND The PCD service could not find the requested token number.\r
+ \r
+**/\r
EFI_STATUS\r
EFIAPI\r
DxePcdSetBool (\r
return SetValueWorker (TokenNumber, &Value, sizeof (Value));\r
}\r
\r
+/**\r
+ Sets an 8-bit value for a given PCD token.\r
\r
+ When the PCD service sets a value, it will check to ensure that the \r
+ size of the value being set is compatible with the Token's existing definition. \r
+ If it is not, an error will be returned.\r
\r
+ @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value.\r
+ @param[in] ExTokenNumber The PCD token number. \r
+ @param[in] Value The value to set for the PCD token.\r
+\r
+ @retval EFI_SUCCESS Procedure returned successfully.\r
+ @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data \r
+ being set was incompatible with a call to this function. \r
+ Use GetSize() to retrieve the size of the target data.\r
+ @retval EFI_NOT_FOUND The PCD service could not find the requested token number.\r
+ \r
+**/\r
EFI_STATUS\r
EFIAPI\r
DxePcdSet8Ex (\r
return ExSetValueWorker (ExTokenNumber, Guid, &Value, sizeof (Value));\r
}\r
\r
+/**\r
+ Sets an 16-bit value for a given PCD token.\r
+\r
+ When the PCD service sets a value, it will check to ensure that the \r
+ size of the value being set is compatible with the Token's existing definition. \r
+ If it is not, an error will be returned.\r
\r
+ @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value.\r
+ @param[in] ExTokenNumber The PCD token number. \r
+ @param[in] Value The value to set for the PCD token.\r
\r
+ @retval EFI_SUCCESS Procedure returned successfully.\r
+ @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data \r
+ being set was incompatible with a call to this function. \r
+ Use GetSize() to retrieve the size of the target data.\r
+ @retval EFI_NOT_FOUND The PCD service could not find the requested token number.\r
+ \r
+**/\r
EFI_STATUS\r
EFIAPI\r
DxePcdSet16Ex (\r
return ExSetValueWorker (ExTokenNumber, Guid, &Value, sizeof (Value));\r
}\r
\r
+/**\r
+ Sets an 32-bit value for a given PCD token.\r
\r
+ When the PCD service sets a value, it will check to ensure that the \r
+ size of the value being set is compatible with the Token's existing definition. \r
+ If it is not, an error will be returned.\r
\r
+ @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value.\r
+ @param[in] ExTokenNumber The PCD token number. \r
+ @param[in] Value The value to set for the PCD token.\r
+\r
+ @retval EFI_SUCCESS Procedure returned successfully.\r
+ @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data \r
+ being set was incompatible with a call to this function. \r
+ Use GetSize() to retrieve the size of the target data.\r
+ @retval EFI_NOT_FOUND The PCD service could not find the requested token number.\r
+ \r
+**/\r
EFI_STATUS\r
EFIAPI\r
DxePcdSet32Ex (\r
return ExSetValueWorker (ExTokenNumber, Guid, &Value, sizeof (Value));\r
}\r
\r
+/**\r
+ Sets an 64-bit value for a given PCD token.\r
+\r
+ When the PCD service sets a value, it will check to ensure that the \r
+ size of the value being set is compatible with the Token's existing definition. \r
+ If it is not, an error will be returned.\r
\r
+ @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value.\r
+ @param[in] ExTokenNumber The PCD token number. \r
+ @param[in] Value The value to set for the PCD token.\r
\r
+ @retval EFI_SUCCESS Procedure returned successfully.\r
+ @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data \r
+ being set was incompatible with a call to this function. \r
+ Use GetSize() to retrieve the size of the target data.\r
+ @retval EFI_NOT_FOUND The PCD service could not find the requested token number.\r
+ \r
+**/\r
EFI_STATUS\r
EFIAPI\r
DxePcdSet64Ex (\r
return ExSetValueWorker (ExTokenNumber, Guid, &Value, sizeof (Value));\r
}\r
\r
-\r
-\r
+/**\r
+ Sets a value of a specified size for a given PCD token.\r
+\r
+ When the PCD service sets a value, it will check to ensure that the \r
+ size of the value being set is compatible with the Token's existing definition. \r
+ If it is not, an error will be returned.\r
+\r
+ @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value.\r
+ @param[in] ExTokenNumber The PCD token number. \r
+ @param[in, out] SizeOfBuffer A pointer to the length of the value being set for the PCD token. \r
+ On input, if the SizeOfValue is greater than the maximum size supported \r
+ for this TokenNumber then the output value of SizeOfValue will reflect \r
+ the maximum size supported for this TokenNumber.\r
+ @param[in] Buffer The buffer to set for the PCD token.\r
+\r
+ @retval EFI_SUCCESS Procedure returned successfully.\r
+ @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data \r
+ being set was incompatible with a call to this function. \r
+ Use GetSize() to retrieve the size of the target data.\r
+ @retval EFI_NOT_FOUND The PCD service could not find the requested token number.\r
+ \r
+**/\r
EFI_STATUS\r
EFIAPI\r
DxePcdSetPtrEx (\r
return ExSetWorker(ExTokenNumber, Guid, Buffer, SizeOfBuffer, TRUE);\r
}\r
\r
+/**\r
+ Sets an Boolean value for a given PCD token.\r
+\r
+ When the PCD service sets a value, it will check to ensure that the \r
+ size of the value being set is compatible with the Token's existing definition. \r
+ If it is not, an error will be returned.\r
\r
+ @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value.\r
+ @param[in] ExTokenNumber The PCD token number. \r
+ @param[in] Value The value to set for the PCD token.\r
\r
+ @retval EFI_SUCCESS Procedure returned successfully.\r
+ @retval EFI_INVALID_PARAMETER The PCD service determined that the size of the data \r
+ being set was incompatible with a call to this function. \r
+ Use GetSize() to retrieve the size of the target data.\r
+ @retval EFI_NOT_FOUND The PCD service could not find the requested token number.\r
+ \r
+**/\r
EFI_STATUS\r
EFIAPI\r
DxePcdSetBoolEx (\r
return ExSetValueWorker (ExTokenNumber, Guid, &Value, sizeof (Value));\r
}\r
\r
+/**\r
+ Specifies a function to be called anytime the value of a designated token is changed.\r
\r
+ @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value.\r
+ @param[in] TokenNumber The PCD token number. \r
+ @param[in] CallBackFunction The function prototype called when the value associated with the CallBackToken is set. \r
\r
+ @retval EFI_SUCCESS The PCD service has successfully established a call event \r
+ for the CallBackToken requested.\r
+ @retval EFI_NOT_FOUND The PCD service could not find the referenced token number.\r
\r
+**/\r
EFI_STATUS\r
EFIAPI\r
DxeRegisterCallBackOnSet (\r
{\r
EFI_STATUS Status;\r
\r
- ASSERT (CallBackFunction != NULL);\r
- \r
+ if (CallBackFunction == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
//\r
// Aquire lock to prevent reentrance from TPL_CALLBACK level\r
//\r
return Status;\r
}\r
\r
+/**\r
+ Cancels a previously set callback function for a particular PCD token number.\r
+\r
+ @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value.\r
+ @param[in] TokenNumber The PCD token number. \r
+ @param[in] CallBackFunction The function prototype called when the value associated with the CallBackToken is set. \r
\r
+ @retval EFI_SUCCESS The PCD service has successfully established a call event \r
+ for the CallBackToken requested.\r
+ @retval EFI_NOT_FOUND The PCD service could not find the referenced token number.\r
\r
+**/\r
EFI_STATUS\r
EFIAPI\r
DxeUnRegisterCallBackOnSet (\r
{\r
EFI_STATUS Status;\r
\r
- ASSERT (CallBackFunction != NULL);\r
+ if (CallBackFunction == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
\r
//\r
// Aquire lock to prevent reentrance from TPL_CALLBACK level\r
return Status;\r
}\r
\r
+/**\r
+ Retrieves the next valid PCD token for a given namespace.\r
+\r
+ @param[in] Guid The 128-bit unique value that designates the namespace from which to extract the value.\r
+ @param[in, out] TokenNumber A pointer to the PCD token number to use to find the subsequent token number. \r
+ If the input token namespace or token number does not exist on the platform, \r
+ an error is returned and the value of *TokenNumber is undefined. To retrieve the "first" token, \r
+ have the pointer reference a TokenNumber value of 0. If the input token number is 0 and \r
+ there is no valid token number for this token namespace, *TokenNumber will be assigned to \r
+ 0 and the function return EFI_SUCCESS. If the token number is the last valid token number, \r
+ *TokenNumber will be assigned to 0 and the function return EFI_SUCCESS.\r
\r
+ @retval EFI_SUCCESS The PCD service retrieved the next valid token number. Or the input token number \r
+ is already the last valid token number in the PCD database. \r
+ In the later case, *TokenNumber is updated with the value of 0.\r
+ @retval EFI_NOT_FOUND If this input token number and token namespace does not exist on the platform.\r
\r
+**/\r
EFI_STATUS\r
EFIAPI\r
DxePcdGetNextToken (\r
return Status;\r
}\r
\r
-STATIC\r
+/**\r
+ Get all token space guid table which is different with given token space guid.\r
+\r
+ @param ExMapTableSize The size of guid table\r
+ @param ExMapTable Token space guid table that want to be scaned.\r
+ @param GuidTable Guid table\r
+\r
+ @return all token space guid table which is different with given token space guid.\r
+\r
+**/\r
EFI_GUID **\r
GetDistinctTokenSpace (\r
IN OUT UINTN *ExMapTableSize,\r
\r
}\r
\r
-//\r
-// Just pre-allocate a memory buffer that is big enough to\r
-// host all distinct TokenSpace guid in both\r
-// PEI ExMap and DXE ExMap.\r
-//\r
-STATIC EFI_GUID *TmpTokenSpaceBuffer[PEI_EXMAPPING_TABLE_SIZE + DXE_EXMAPPING_TABLE_SIZE] = { 0 };\r
-\r
+/**\r
+ Get next token space in PCD database according to given token space guid.\r
+ \r
+ This routine is enable only when feature flag PCD PcdDxePcdDatabaseTraverseEnabled \r
+ is TRUE.\r
+ \r
+ @param Guid Given token space guid. If NULL, then Guid will be set to \r
+ the first PCD token space in PCD database, If not NULL, then\r
+ Guid will be set to next PCD token space.\r
+\r
+ @retval EFI_UNSUPPORTED If feature flag PCD PcdDxePcdDatabaseTraverseEnabled is FALSE.\r
+ @retval EFI_NOT_FOUND If PCD database has no token space table or can not find given\r
+ token space in PCD database.\r
+ @retval EFI_SUCCESS Success to get next token space guid.\r
+**/\r
EFI_STATUS\r
EFIAPI\r
DxePcdGetNextTokenSpace (\r
}\r
\r
return EFI_NOT_FOUND;\r
-\r
}\r
\r
\r
projects / mirror_edk2.git / blobdiff