diff options
Diffstat (limited to 'MdePkg/Library/PeiPcdLib/PeiPcdLib.c')
| -rw-r--r-- | MdePkg/Library/PeiPcdLib/PeiPcdLib.c | 1079 |
1 files changed, 1079 insertions, 0 deletions
diff --git a/MdePkg/Library/PeiPcdLib/PeiPcdLib.c b/MdePkg/Library/PeiPcdLib/PeiPcdLib.c new file mode 100644 index 0000000000..76102c6a24 --- /dev/null +++ b/MdePkg/Library/PeiPcdLib/PeiPcdLib.c @@ -0,0 +1,1079 @@ +/** @file
+Implementation of PcdLib class library for PEI phase.
+
+Copyright (c) 2006, Intel Corporation<BR>
+All rights reserved. This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+
+Module Name: PeiPcdLib.c
+
+**/
+
+
+
+//
+// Include common header file for this module.
+//
+#include "CommonHeader.h"
+
+/**
+ The constructor function retrieve the PCD_PPI pointer.
+
+ @param[in] VOID
+
+ @retval PCD_PPI * The pointer to the PCD_PPI.
+
+**/
+STATIC
+PCD_PPI *
+GetPcdPpiPtr (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ PCD_PPI *PcdPpi;
+ EFI_PEI_SERVICES **PeiServices;
+
+
+ PeiServices = GetPeiServicesTablePointer ();
+
+ Status = (**PeiServices).LocatePpi (
+ PeiServices,
+ &gPcdPpiGuid,
+ 0,
+ NULL,
+ (VOID **)&PcdPpi
+ );
+
+ ASSERT_EFI_ERROR (Status);
+
+ return PcdPpi;
+}
+
+
+
+/**
+ Sets the current SKU in the PCD database to the value specified by SkuId. SkuId is returned.
+
+ @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 SKU_ID Return the SKU ID that just be set.
+
+**/
+UINTN
+EFIAPI
+LibPcdSetSku (
+ IN UINTN SkuId
+ )
+{
+
+ ASSERT (SkuId < 0x100);
+
+ GetPcdPpiPtr()->SetSku (SkuId);;
+
+ return SkuId;
+}
+
+
+
+/**
+ Returns the 8-bit value for the token specified by TokenNumber.
+
+ @param[in] The PCD token number to retrieve a current value for.
+
+ @retval UINT8 Returns the 8-bit value for the token specified by TokenNumber.
+
+**/
+UINT8
+EFIAPI
+LibPcdGet8 (
+ IN UINTN TokenNumber
+ )
+{
+ PCD_PPI * PcdPpi;
+
+ PcdPpi = GetPcdPpiPtr ();
+
+ return PcdPpi->Get8 (TokenNumber);
+}
+
+
+
+/**
+ Returns the 16-bit value for the token specified by TokenNumber.
+
+ @param[in] The PCD token number to retrieve a current value for.
+
+ @retval UINT16 Returns the 16-bit value for the token specified by TokenNumber.
+
+**/
+UINT16
+EFIAPI
+LibPcdGet16 (
+ IN UINTN TokenNumber
+ )
+{
+ PCD_PPI *PcdPpi;
+
+ PcdPpi = GetPcdPpiPtr ();
+
+ return PcdPpi->Get16 (TokenNumber);
+}
+
+
+
+/**
+ Returns the 32-bit value for the token specified by TokenNumber.
+
+ @param[in] TokenNumber The PCD token number to retrieve a current value for.
+
+ @retval UINT32 Returns the 32-bit value for the token specified by TokenNumber.
+
+**/
+UINT32
+EFIAPI
+LibPcdGet32 (
+ IN UINTN TokenNumber
+ )
+{
+ PCD_PPI * PcdPpi;
+
+ PcdPpi = GetPcdPpiPtr ();
+
+ return PcdPpi->Get32 (TokenNumber);
+}
+
+
+
+/**
+ Returns the 64-bit value for the token specified by TokenNumber.
+
+ @param[in] TokenNumber The PCD token number to retrieve a current value for.
+
+ @retval UINT64 Returns the 64-bit value for the token specified by TokenNumber.
+
+**/
+UINT64
+EFIAPI
+LibPcdGet64 (
+ IN UINTN TokenNumber
+ )
+{
+ PCD_PPI * PcdPpi;
+
+ PcdPpi = GetPcdPpiPtr ();
+
+ return PcdPpi->Get64 (TokenNumber);
+}
+
+
+
+/**
+ Returns the pointer to the buffer of the token specified by TokenNumber.
+
+ @param[in] TokenNumber The PCD token number to retrieve a current value for.
+
+ @retval VOID* Returns the pointer to the token specified by TokenNumber.
+
+**/
+VOID *
+EFIAPI
+LibPcdGetPtr (
+ IN UINTN TokenNumber
+ )
+{
+ PCD_PPI * PcdPpi;
+
+ PcdPpi = GetPcdPpiPtr ();
+
+ return PcdPpi->GetPtr (TokenNumber);
+}
+
+
+
+/**
+ Returns the Boolean value of the token specified by TokenNumber.
+
+ @param[in] TokenNumber The PCD token number to retrieve a current value for.
+
+ @retval BOOLEAN Returns the Boolean value of the token specified by TokenNumber.
+
+**/
+BOOLEAN
+EFIAPI
+LibPcdGetBool (
+ IN UINTN TokenNumber
+ )
+{
+ PCD_PPI * PcdPpi;
+
+ PcdPpi = GetPcdPpiPtr ();
+
+ return PcdPpi->GetBool (TokenNumber);
+}
+
+
+
+/**
+ Returns the size of the token specified by TokenNumber.
+
+ @param[in] TokenNumber The PCD token number to retrieve a current value for.
+
+ @retval UINTN Returns the size of the token specified by TokenNumber.
+
+**/
+UINTN
+EFIAPI
+LibPcdGetSize (
+ IN UINTN TokenNumber
+ )
+{
+ PCD_PPI * PcdPpi;
+
+ PcdPpi = GetPcdPpiPtr ();
+
+ return PcdPpi->GetSize (TokenNumber);
+}
+
+
+
+/**
+ Returns the 8-bit value for the token specified by TokenNumber and Guid.
+ If Guid is NULL, then ASSERT().
+
+ @param[in] Guid Pointer to a 128-bit unique value that designates
+ which namespace to retrieve a value from.
+ @param[in] TokenNumber The PCD token number to retrieve a current value for.
+
+ @retval UINT8 Return the UINT8.
+
+**/
+UINT8
+EFIAPI
+LibPcdGetEx8 (
+ IN CONST GUID *Guid,
+ IN UINTN TokenNumber
+ )
+{
+ PCD_PPI * PcdPpi;
+
+ ASSERT (Guid != NULL);
+
+ PcdPpi = GetPcdPpiPtr ();
+
+ return PcdPpi->Get8Ex (Guid, TokenNumber);
+}
+
+
+
+/**
+ Returns the 16-bit value for the token specified by TokenNumber and Guid.
+ If Guid is NULL, then ASSERT().
+
+ @param[in] Guid Pointer to a 128-bit unique value that designates
+ which namespace to retrieve a value from.
+ @param[in] TokenNumber The PCD token number to retrieve a current value for.
+
+ @retval UINT16 Return the UINT16.
+
+**/
+UINT16
+EFIAPI
+LibPcdGetEx16 (
+ IN CONST GUID *Guid,
+ IN UINTN TokenNumber
+ )
+{
+ PCD_PPI * PcdPpi;
+
+ ASSERT (Guid != NULL);
+
+ PcdPpi = GetPcdPpiPtr ();
+
+ return PcdPpi->Get16Ex (Guid, TokenNumber);
+}
+
+
+
+/**
+ Returns the 32-bit value for the token specified by TokenNumber and Guid.
+ If Guid is NULL, then ASSERT().
+
+ @param[in] Guid Pointer to a 128-bit unique value that designates
+ which namespace to retrieve a value from.
+ @param[in] TokenNumber The PCD token number to retrieve a current value for.
+
+ @retval UINT32 Return the UINT32.
+
+**/
+UINT32
+EFIAPI
+LibPcdGetEx32 (
+ IN CONST GUID *Guid,
+ IN UINTN TokenNumber
+ )
+{
+ PCD_PPI * PcdPpi;
+
+ ASSERT (Guid != NULL);
+
+ PcdPpi = GetPcdPpiPtr ();
+
+ return PcdPpi->Get32Ex (Guid, TokenNumber);
+}
+
+
+
+
+/**
+ Returns the 64-bit value for the token specified by TokenNumber and Guid.
+ If Guid is NULL, then ASSERT().
+
+ @param[in] Guid Pointer to a 128-bit unique value that designates
+ which namespace to retrieve a value from.
+ @param[in] TokenNumber The PCD token number to retrieve a current value for.
+
+ @retval UINT64 Return the UINT64.
+
+**/
+UINT64
+EFIAPI
+LibPcdGetEx64 (
+ IN CONST GUID *Guid,
+ IN UINTN TokenNumber
+ )
+{
+ PCD_PPI * PcdPpi;
+
+ ASSERT (Guid != NULL);
+
+ PcdPpi = GetPcdPpiPtr ();
+
+ return PcdPpi->Get64Ex (Guid, TokenNumber);
+}
+
+
+
+/**
+ Returns the pointer to the token specified by TokenNumber and Guid.
+ If Guid is NULL, then ASSERT().
+
+ @param[in] Guid Pointer to a 128-bit unique value that designates
+ which namespace to retrieve a value from.
+ @param[in] TokenNumber The PCD token number to retrieve a current value for.
+
+ @retval VOID* Return the VOID* pointer.
+
+**/
+VOID *
+EFIAPI
+LibPcdGetExPtr (
+ IN CONST GUID *Guid,
+ IN UINTN TokenNumber
+ )
+{
+ PCD_PPI * PcdPpi;
+
+ ASSERT (Guid != NULL);
+
+ PcdPpi = GetPcdPpiPtr ();
+
+ return PcdPpi->GetPtrEx (Guid, TokenNumber);
+}
+
+
+
+/**
+ Returns the Boolean value of the token specified by TokenNumber and Guid.
+ If Guid is NULL, then ASSERT().
+
+ @param[in] Guid Pointer to a 128-bit unique value that designates
+ which namespace to retrieve a value from.
+ @param[in] TokenNumber The PCD token number to retrieve a current value for.
+
+ @retval BOOLEAN Return the BOOLEAN.
+
+**/
+BOOLEAN
+EFIAPI
+LibPcdGetExBool (
+ IN CONST GUID *Guid,
+ IN UINTN TokenNumber
+ )
+{
+ PCD_PPI * PcdPpi;
+
+ ASSERT (Guid != NULL);
+
+ PcdPpi = GetPcdPpiPtr ();
+
+ return PcdPpi->GetBoolEx (Guid, TokenNumber);
+}
+
+
+
+/**
+ Returns the size of the token specified by TokenNumber and Guid.
+ If Guid is NULL, then ASSERT().
+
+ @param[in] Guid Pointer to a 128-bit unique value that designates
+ which namespace to retrieve a value from.
+ @param[in] TokenNumber The PCD token number to retrieve a current value for.
+
+ @retval UINTN Return the size.
+
+**/
+UINTN
+EFIAPI
+LibPcdGetExSize (
+ IN CONST GUID *Guid,
+ IN UINTN TokenNumber
+ )
+{
+ PCD_PPI * PcdPpi;
+
+ ASSERT (Guid != NULL);
+
+ PcdPpi = GetPcdPpiPtr ();
+
+ return PcdPpi->GetSizeEx (Guid, TokenNumber);
+}
+
+
+
+/**
+ Sets the 8-bit value for the token specified by TokenNumber
+ to the value specified by Value. Value is returned.
+
+ @param[in] TokenNumber The PCD token number to set a current value for.
+ @param[in] Value The 8-bit value to set.
+
+ @retval UINT8 Return the value been set.
+
+**/
+UINT8
+EFIAPI
+LibPcdSet8 (
+ IN UINTN TokenNumber,
+ IN UINT8 Value
+ )
+{
+ EFI_STATUS Status;
+ PCD_PPI * PcdPpi;
+
+ PcdPpi = GetPcdPpiPtr ();
+
+ Status = PcdPpi->Set8 (TokenNumber, Value);
+
+ ASSERT_EFI_ERROR (Status);
+
+ return Value;
+}
+
+
+
+/**
+ Sets the 16-bit value for the token specified by TokenNumber
+ to the value specified by Value. Value is returned.
+
+ @param[in] TokenNumber The PCD token number to set a current value for.
+ @param[in] Value The 16-bit value to set.
+
+ @retval UINT16 Return the value been set.
+
+**/
+UINT16
+EFIAPI
+LibPcdSet16 (
+ IN UINTN TokenNumber,
+ IN UINT16 Value
+ )
+{
+ EFI_STATUS Status;
+ PCD_PPI * PcdPpi;
+
+ PcdPpi = GetPcdPpiPtr ();
+
+ Status = PcdPpi->Set16 (TokenNumber, Value);
+
+ ASSERT_EFI_ERROR (Status);
+
+ return Value;
+}
+
+
+
+/**
+ Sets the 32-bit value for the token specified by TokenNumber
+ to the value specified by Value. Value is returned.
+
+ @param[in] TokenNumber The PCD token number to set a current value for.
+ @param[in] Value The 32-bit value to set.
+
+ @retval UINT32 Return the value been set.
+
+**/
+UINT32
+EFIAPI
+LibPcdSet32 (
+ IN UINTN TokenNumber,
+ IN UINT32 Value
+ )
+{
+ EFI_STATUS Status;
+ PCD_PPI * PcdPpi;
+
+ PcdPpi = GetPcdPpiPtr ();
+
+ Status = PcdPpi->Set32 (TokenNumber, Value);
+
+ ASSERT_EFI_ERROR (Status);
+
+ return Value;
+}
+
+
+
+/**
+ Sets the 64-bit value for the token specified by TokenNumber
+ to the value specified by Value. Value is returned.
+
+ @param[in] TokenNumber The PCD token number to set a current value for.
+ @param[in] Value The 64-bit value to set.
+
+ @retval UINT64 Return the value been set.
+
+**/
+UINT64
+EFIAPI
+LibPcdSet64 (
+ IN UINTN TokenNumber,
+ IN UINT64 Value
+ )
+{
+ EFI_STATUS Status;
+ PCD_PPI * PcdPpi;
+
+ PcdPpi = GetPcdPpiPtr ();
+
+ Status = PcdPpi->Set64 (TokenNumber, Value);
+
+ ASSERT_EFI_ERROR (Status);
+
+ return Value;
+}
+
+
+
+/**
+ Sets a buffer for the token specified by TokenNumber to
+ the value specified by Buffer and SizeOfValue. Buffer to
+ be set is returned. The content of the buffer could be
+ overwritten if a Callback on SET is registered with this
+ TokenNumber.
+
+ If SizeOfValue is greater than the maximum
+ size support by TokenNumber, then set SizeOfValue to the
+ maximum size supported by TokenNumber and return NULL to
+ indicate that the set operation was not actually performed.
+
+ If SizeOfValue > 0 and Buffer is NULL, then ASSERT().
+
+ @param[in] TokenNumber The PCD token number to set a current value for.
+ @param[in,out] SizeOfBuffer The size, in bytes, of Buffer.
+ @param[in] Value A pointer to the buffer to set.
+
+ @retval VOID* Return the pointer for the buffer been set.
+
+**/
+VOID *
+EFIAPI
+LibPcdSetPtr (
+ IN UINTN TokenNumber,
+ IN OUT UINTN *SizeOfBuffer,
+ IN VOID *Buffer
+ )
+{
+ EFI_STATUS Status;
+ PCD_PPI *PcdPpi;
+
+ ASSERT (SizeOfBuffer != NULL);
+
+ if (*SizeOfBuffer > 0) {
+ ASSERT (Buffer != NULL);
+ }
+
+ PcdPpi = GetPcdPpiPtr ();
+
+ Status = PcdPpi->SetPtr (TokenNumber, SizeOfBuffer, Buffer);
+
+ if (EFI_ERROR (Status)) {
+ return NULL;
+ }
+
+ return Buffer;
+}
+
+
+
+/**
+ Sets the Boolean value for the token specified by TokenNumber
+ to the value specified by Value. Value is returned.
+
+ @param[in] TokenNumber The PCD token number to set a current value for.
+ @param[in] Value The boolean value to set.
+
+ @retval BOOLEAN Return the value been set.
+
+**/
+BOOLEAN
+EFIAPI
+LibPcdSetBool (
+ IN UINTN TokenNumber,
+ IN BOOLEAN Value
+ )
+{
+ EFI_STATUS Status;
+ PCD_PPI * PcdPpi;
+
+ PcdPpi = GetPcdPpiPtr ();
+
+ Status = PcdPpi->SetBool (TokenNumber, Value);
+
+ ASSERT_EFI_ERROR (Status);
+
+ return Value;
+}
+
+
+
+/**
+ Sets the 8-bit value for the token specified by TokenNumber and
+ Guid to the value specified by Value. Value is returned.
+ If Guid is NULL, then ASSERT().
+
+ @param[in] Guid Pointer to a 128-bit unique value that
+ designates which namespace to set a value from.
+ @param[in] TokenNumber The PCD token number to set a current value for.
+ @param[in] Value The 8-bit value to set.
+
+ @retval UINT8 Return the value been set.
+
+**/
+UINT8
+EFIAPI
+LibPcdSetEx8 (
+ IN CONST GUID *Guid,
+ IN UINTN TokenNumber,
+ IN UINT8 Value
+ )
+{
+ EFI_STATUS Status;
+ PCD_PPI * PcdPpi;
+
+ PcdPpi = GetPcdPpiPtr ();
+
+ ASSERT (Guid != NULL);
+
+ Status = PcdPpi->Set8Ex (Guid, TokenNumber, Value);
+
+ ASSERT_EFI_ERROR (Status);
+
+ return Value;
+}
+
+
+
+/**
+ Sets the 16-bit value for the token specified by TokenNumber and
+ Guid to the value specified by Value. Value is returned.
+ If Guid is NULL, then ASSERT().
+
+ @param[in] Guid Pointer to a 128-bit unique value that
+ designates which namespace to set a value from.
+ @param[in] TokenNumber The PCD token number to set a current value for.
+ @param[in] Value The 16-bit value to set.
+
+ @retval UINT8 Return the value been set.
+
+**/
+UINT16
+EFIAPI
+LibPcdSetEx16 (
+ IN CONST GUID *Guid,
+ IN UINTN TokenNumber,
+ IN UINT16 Value
+ )
+{
+ EFI_STATUS Status;
+ PCD_PPI * PcdPpi;
+
+ PcdPpi = GetPcdPpiPtr ();
+
+ ASSERT (Guid != NULL);
+ Status = PcdPpi->Set16Ex (Guid, TokenNumber, Value);
+
+ ASSERT_EFI_ERROR (Status);
+
+ return Value;
+}
+
+
+
+/**
+ Sets the 32-bit value for the token specified by TokenNumber and
+ Guid to the value specified by Value. Value is returned.
+ If Guid is NULL, then ASSERT().
+
+ @param[in] Guid Pointer to a 128-bit unique value that
+ designates which namespace to set a value from.
+ @param[in] TokenNumber The PCD token number to set a current value for.
+ @param[in] Value The 32-bit value to set.
+
+ @retval UINT32 Return the value been set.
+
+**/
+UINT32
+EFIAPI
+LibPcdSetEx32 (
+ IN CONST GUID *Guid,
+ IN UINTN TokenNumber,
+ IN UINT32 Value
+ )
+{
+ EFI_STATUS Status;
+ PCD_PPI * PcdPpi;
+ ASSERT (Guid != NULL);
+ PcdPpi = GetPcdPpiPtr ();
+
+
+ Status = PcdPpi->Set32Ex (Guid, TokenNumber, Value);
+
+ ASSERT_EFI_ERROR (Status);
+
+ return Value;
+}
+
+
+
+/**
+ Sets the 64-bit value for the token specified by TokenNumber and
+ Guid to the value specified by Value. Value is returned.
+ If Guid is NULL, then ASSERT().
+
+ @param[in] Guid Pointer to a 128-bit unique value that
+ designates which namespace to set a value from.
+ @param[in] TokenNumber The PCD token number to set a current value for.
+ @param[in] Value The 64-bit value to set.
+
+ @retval UINT64 Return the value been set.
+
+**/
+UINT64
+EFIAPI
+LibPcdSetEx64 (
+ IN CONST GUID *Guid,
+ IN UINTN TokenNumber,
+ IN UINT64 Value
+ )
+{
+ EFI_STATUS Status;
+ PCD_PPI * PcdPpi;
+ ASSERT (Guid != NULL);
+ PcdPpi = GetPcdPpiPtr ();
+
+
+ Status = PcdPpi->Set64Ex (Guid, TokenNumber, Value);
+
+ ASSERT_EFI_ERROR (Status);
+
+ return Value;
+}
+
+
+
+/**
+ Sets a buffer for the token specified by TokenNumber to the value specified by
+ Buffer and SizeOfValue. Buffer is returned. If SizeOfValue is greater than
+ the maximum size support by TokenNumber, then set SizeOfValue to the maximum size
+ supported by TokenNumber and return NULL to indicate that the set operation
+ was not actually performed.
+
+ If SizeOfValue > 0 and Buffer is NULL, then ASSERT().
+
+ @param[in] Guid Pointer to a 128-bit unique value that
+ designates which namespace to set a value from.
+ @param[in] TokenNumber The PCD token number to set a current value for.
+ @param[in, out] SizeOfBuffer The size, in bytes, of Buffer.
+ @param[in] Buffer A pointer to the buffer to set.
+
+ @retval VOID * Return the pinter to the buffer been set.
+
+**/
+VOID *
+EFIAPI
+LibPcdSetExPtr (
+ IN CONST GUID *Guid,
+ IN UINTN TokenNumber,
+ IN OUT UINTN *SizeOfBuffer,
+ IN VOID *Buffer
+ )
+{
+ EFI_STATUS Status;
+ PCD_PPI *PcdPpi;
+ ASSERT (SizeOfBuffer != NULL);
+ if (*SizeOfBuffer > 0) {
+ ASSERT (Buffer != NULL);
+ }
+ ASSERT (Guid != NULL);
+ PcdPpi = GetPcdPpiPtr ();
+
+ Status = PcdPpi->SetPtrEx (Guid, TokenNumber, SizeOfBuffer, Buffer);
+
+ if (EFI_ERROR (Status)) {
+ return NULL;
+ }
+
+ return Buffer;
+}
+
+
+
+/**
+ Sets the Boolean value for the token specified by TokenNumber and
+ Guid to the value specified by Value. Value is returned.
+ If Guid is NULL, then ASSERT().
+
+ @param[in] Guid Pointer to a 128-bit unique value that
+ designates which namespace to set a value from.
+ @param[in] TokenNumber The PCD token number to set a current value for.
+ @param[in] Value The Boolean value to set.
+
+ @retval Boolean Return the value been set.
+
+**/
+BOOLEAN
+EFIAPI
+LibPcdSetExBool (
+ IN CONST GUID *Guid,
+ IN UINTN TokenNumber,
+ IN BOOLEAN Value
+ )
+{
+ EFI_STATUS Status;
+ PCD_PPI * PcdPpi;
+
+ PcdPpi = GetPcdPpiPtr ();
+
+ ASSERT (Guid != NULL);
+ Status = PcdPpi->SetBoolEx (Guid, TokenNumber, Value);
+
+ ASSERT_EFI_ERROR (Status);
+
+ return Value;
+}
+
+
+
+/**
+ When the token specified by TokenNumber and Guid is set,
+ then notification function specified by NotificationFunction is called.
+ If Guid is NULL, then the default token space is used.
+ If NotificationFunction is NULL, then ASSERT().
+
+ @param[in] Guid Pointer to a 128-bit unique value that designates which
+ namespace to set a value from. If NULL, then the default
+ token space is used.
+ @param[in] TokenNumber The PCD token number to monitor.
+ @param[in] NotificationFunction The function to call when the token
+ specified by Guid and TokenNumber is set.
+
+ @retval VOID
+
+**/
+VOID
+EFIAPI
+LibPcdCallbackOnSet (
+ IN CONST GUID *Guid, OPTIONAL
+ IN UINTN TokenNumber,
+ IN PCD_CALLBACK NotificationFunction
+ )
+{
+ EFI_STATUS Status;
+ PCD_PPI * PcdPpi;
+
+ PcdPpi = GetPcdPpiPtr ();
+
+
+ Status = PcdPpi->CallbackOnSet (Guid, TokenNumber, NotificationFunction);
+
+ ASSERT_EFI_ERROR (Status);
+
+ return;
+}
+
+
+
+/**
+ Disable a notification function that was established with LibPcdCallbackonSet().
+ If NotificationFunction is NULL, then ASSERT().
+
+ @param[in] Guid Specify the GUID token space.
+ @param[in] TokenNumber Specify the token number.
+ @param[in] NotificationFunction The callback function to be unregistered.
+
+ @retval VOID
+
+**/
+VOID
+EFIAPI
+LibPcdCancelCallback (
+ IN CONST GUID *Guid, OPTIONAL
+ IN UINTN TokenNumber,
+ IN PCD_CALLBACK NotificationFunction
+ )
+{
+ EFI_STATUS Status;
+ PCD_PPI * PcdPpi;
+
+ PcdPpi = GetPcdPpiPtr ();
+
+
+ Status = PcdPpi->CancelCallback (Guid, TokenNumber, NotificationFunction);
+
+ ASSERT_EFI_ERROR (Status);
+
+ return;
+}
+
+
+
+/**
+ Retrieves the next PCD token number from the token space specified by Guid.
+ If Guid is NULL, then the default token space is used. If TokenNumber is 0,
+ then the first token number is returned. Otherwise, the token number that
+ follows TokenNumber in the token space is returned. If TokenNumber is the last
+ token number in the token space, then 0 is returned. If TokenNumber is not 0 and
+ is not in the token space specified by Guid, then ASSERT().
+
+ @param[in] Pointer to a 128-bit unique value that designates which namespace
+ to set a value from. If NULL, then the default token space is used.
+ @param[in] The previous PCD token number. If 0, then retrieves the first PCD
+ token number.
+
+ @retval UINTN The next valid token number.
+
+**/
+UINTN
+EFIAPI
+LibPcdGetNextToken (
+ IN CONST GUID *Guid, OPTIONAL
+ IN UINTN TokenNumber
+ )
+{
+ EFI_STATUS Status;
+ PCD_PPI * PcdPpi;
+
+ PcdPpi = GetPcdPpiPtr ();
+
+
+ Status = PcdPpi->GetNextToken (Guid, &TokenNumber);
+
+ ASSERT_EFI_ERROR (Status);
+
+ return TokenNumber;
+}
+
+
+/**
+ Retrieves the next PCD token space from a token space specified by Guid.
+ Guid of NULL is reserved to mark the default local token namespace on the current
+ platform. If Guid is NULL, then the GUID of the first non-local token space of the
+ current platform is returned. If Guid is the last non-local token space,
+ then NULL is returned.
+
+ If Guid is not NULL and is not a valid token space in the current platform, then ASSERT().
+
+
+
+ @param[in] Pointer to a 128-bit unique value that designates from which namespace
+ to start the search.
+
+ @retval CONST GUID * The next valid token namespace.
+
+**/
+GUID *
+EFIAPI
+LibPcdGetNextTokenSpace (
+ IN CONST GUID *Guid
+ )
+{
+ EFI_STATUS Status;
+ PCD_PPI * PcdPpi;
+
+ PcdPpi = GetPcdPpiPtr ();
+
+
+ Status = PcdPpi->GetNextTokenSpace (&Guid);
+
+ ASSERT_EFI_ERROR (Status);
+
+ return (GUID *)Guid;
+}
+
+
+
+/**
+ Sets the PCD entry specified by PatchVariable to the value specified by Buffer
+ and SizeOfValue. Buffer is returned. If SizeOfValue is greater than
+ MaximumDatumSize, then set SizeOfValue to MaximumDatumSize and return
+ NULL to indicate that the set operation was not actually performed.
+ If SizeOfValue is set to MAX_ADDRESS, then SizeOfValue must be set to
+ MaximumDatumSize and NULL must be returned.
+
+ If PatchVariable is NULL, then ASSERT().
+ If SizeOfValue is NULL, then ASSERT().
+ If SizeOfValue > 0 and Buffer is NULL, then ASSERT().
+
+ @param[in] PatchVariable A pointer to the global variable in a module that is
+ the target of the set operation.
+ @param[in] MaximumDatumSize The maximum size allowed for the PCD entry specified by PatchVariable.
+ @param[in, out] SizeOfBuffer A pointer to the size, in bytes, of Buffer.
+ @param[in] Buffer A pointer to the buffer to used to set the target variable.
+
+**/
+VOID *
+EFIAPI
+LibPatchPcdSetPtr (
+ IN VOID *PatchVariable,
+ IN UINTN MaximumDatumSize,
+ IN OUT UINTN *SizeOfBuffer,
+ IN CONST VOID *Buffer
+ )
+{
+ ASSERT (PatchVariable != NULL);
+ ASSERT (SizeOfBuffer != NULL);
+
+ if (*SizeOfBuffer > 0) {
+ ASSERT (Buffer != NULL);
+ }
+
+ if ((*SizeOfBuffer > MaximumDatumSize) ||
+ (*SizeOfBuffer == MAX_ADDRESS)) {
+ *SizeOfBuffer = MaximumDatumSize;
+ return NULL;
+ }
+
+ CopyMem (PatchVariable, Buffer, *SizeOfBuffer);
+
+ return (VOID *) Buffer;
+}
+
+
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