PcdLib.c revision 4fd606d1f5abe38e1f42c38de1d2e895166bd0f4
/** @file
A emptry template implementation of PCD Library.
Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
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
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <Base.h>
#include <Library/DebugLib.h>
#include <Library/BaseMemoryLib.h>
/**
This function provides a means by which SKU support can be established in the PCD infrastructure.
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.
If SkuId >= 0x100, then ASSERT().
@return Return the SKU ID that just be set.
**/
)
{
return 0;
}
/**
This function provides a means by which to retrieve a value for a given PCD token.
Returns the 8-bit value for the token specified by TokenNumber.
@param[in] TokenNumber The PCD token number to retrieve a current value for.
@return Returns the 8-bit value for the token specified by TokenNumber.
**/
)
{
return 0;
}
/**
This function provides a means by which to retrieve a value for a given PCD token.
Returns the 16-bit value for the token specified by TokenNumber.
@param[in] TokenNumber The PCD token number to retrieve a current value for.
@return Returns the 16-bit value for the token specified by TokenNumber.
**/
)
{
return 0;
}
/**
This function provides a means by which to retrieve a value for a given PCD token.
Returns the 32-bit value for the token specified by TokenNumber.
@param[in] TokenNumber The PCD token number to retrieve a current value for.
@return Returns the 32-bit value for the token specified by TokenNumber.
**/
)
{
return 0;
}
/**
This function provides a means by which to retrieve a value for a given PCD token.
Returns the 64-bit value for the token specified by TokenNumber.
@param[in] TokenNumber The PCD token number to retrieve a current value for.
@return Returns the 64-bit value for the token specified by TokenNumber.
**/
)
{
return 0;
}
/**
This function provides a means by which to retrieve a value for a given PCD token.
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.
@return Returns the pointer to the token specified by TokenNumber.
**/
VOID *
)
{
return 0;
}
/**
This function provides a means by which to retrieve a value for a given PCD token.
Returns the Boolean value of the token specified by TokenNumber.
@param[in] TokenNumber The PCD token number to retrieve a current value for.
@return Returns the Boolean value of the token specified by TokenNumber.
**/
)
{
return 0;
}
/**
This function provides a means by which to retrieve the size of a given PCD token.
@param[in] TokenNumber The PCD token number to retrieve a current value for.
@return Returns the size of the token specified by TokenNumber.
**/
)
{
return 0;
}
/**
This function provides a means by which to retrieve a value for a given PCD token.
Returns the 8-bit value for the token specified by TokenNumber and Guid.
If Guid is NULL, then ASSERT().
@param[in] Guid The 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.
@return Return the UINT8.
**/
)
{
return 0;
}
/**
This function provides a means by which to retrieve a value for a given PCD token.
Returns the 16-bit value for the token specified by TokenNumber and Guid.
If Guid is NULL, then ASSERT().
@param[in] Guid The 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.
@return Return the UINT16.
**/
)
{
return 0;
}
/**
Returns the 32-bit value for the token specified by TokenNumber and Guid.
If Guid is NULL, then ASSERT().
@param[in] Guid The 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.
@return Return the UINT32.
**/
)
{
return 0;
}
/**
This function provides a means by which to retrieve a value for a given PCD token.
Returns the 64-bit value for the token specified by TokenNumber and Guid.
If Guid is NULL, then ASSERT().
@param[in] Guid The 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.
@return Return the UINT64.
**/
)
{
return 0;
}
/**
This function provides a means by which to retrieve a value for a given PCD token.
Returns the pointer to the buffer of token specified by TokenNumber and Guid.
If Guid is NULL, then ASSERT().
@param[in] Guid The 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.
@return Return the VOID* pointer.
**/
VOID *
)
{
return 0;
}
/**
This function provides a means by which to retrieve a value for a given PCD token.
Returns the Boolean value of the token specified by TokenNumber and Guid.
If Guid is NULL, then ASSERT().
@param[in] Guid The 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.
@return Return the BOOLEAN.
**/
)
{
return 0;
}
/**
This function provides a means by which to retrieve the size of a given PCD token.
Returns the size of the token specified by TokenNumber and Guid.
If Guid is NULL, then ASSERT().
@param[in] Guid The 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.
@return Return the size.
**/
)
{
return 0;
}
/**
This function provides a means by which to set a value for a given PCD token.
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.
@return Return the value that was set.
**/
)
{
return 0;
}
/**
This function provides a means by which to set a value for a given PCD token.
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.
@return Return the value that was set.
**/
)
{
return 0;
}
/**
This function provides a means by which to set a value for a given PCD token.
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.
@return Return the value that was set.
**/
)
{
return 0;
}
/**
This function provides a means by which to set a value for a given PCD token.
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.
@return Return the value that was set.
**/
)
{
return 0;
}
/**
This function provides a means by which to set a value for a given PCD token.
Sets a buffer for the token specified by TokenNumber to the value
specified by Buffer and SizeOfBuffer. Buffer is returned.
If SizeOfBuffer is greater than the maximum size support by TokenNumber,
then set SizeOfBuffer to the maximum size supported by TokenNumber and
return NULL to indicate that the set operation was not actually performed.
If SizeOfBuffer is set to MAX_ADDRESS, then SizeOfBuffer must be set to the
maximum size supported by TokenName and NULL must be returned.
If SizeOfBuffer is NULL, then ASSERT().
If SizeOfBuffer > 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] Buffer A pointer to the buffer to set.
@return Return the pointer for the buffer been set.
**/
VOID *
)
{
return NULL;
}
/**
This function provides a means by which to set a value for a given PCD token.
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.
@return Return the value that was set.
**/
)
{
return FALSE;
}
/**
This function provides a means by which to set a value for a given PCD token.
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 The 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.
@return Return the value that was set.
**/
)
{
return 0;
}
/**
This function provides a means by which to set a value for a given PCD token.
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 The 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.
@return Return the value that was set.
**/
)
{
return 0;
}
/**
This function provides a means by which to set a value for a given PCD token.
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 The 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.
@return Return the value that was set.
**/
)
{
return 0;
}
/**
This function provides a means by which to set a value for a given PCD token.
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 The 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.
@return Return the value that was set.
**/
)
{
return 0;
}
/**
This function provides a means by which to set a value for a given PCD token.
Sets a buffer for the token specified by TokenNumber to the value specified by
Buffer and SizeOfBuffer. Buffer is returned. If SizeOfBuffer is greater than
the maximum size support by TokenNumber, then set SizeOfBuffer to the maximum size
supported by TokenNumber and return NULL to indicate that the set operation
was not actually performed.
If Guid is NULL, then ASSERT().
If SizeOfBuffer is NULL, then ASSERT().
If SizeOfBuffer > 0 and Buffer is NULL, then ASSERT().
@param[in] Guid The 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.
@return Return the pinter to the buffer been set.
**/
VOID *
)
{
return NULL;
}
/**
This function provides a means by which to set a value for a given PCD token.
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 The 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.
@return Return the value that was set.
**/
)
{
return FALSE;
}
/**
Set up a notification function that is called when a specified token is set.
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 The 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.
**/
)
{
}
/**
Disable a notification function that was established with LibPcdCallbackonSet().
Disable a notification function that was previously established with LibPcdCallbackOnSet().
If NotificationFunction is NULL, then ASSERT().
If LibPcdCallbackOnSet() was not previously called with Guid, TokenNumber,
and NotificationFunction, 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.
**/
)
{
}
/**
Retrieves the next token in a token space.
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] Guid The 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 previous PCD token number. If 0, then retrieves the first PCD
token number.
@return The next valid token number.
**/
)
{
return 0;
}
/**
Used to retrieve the list of available PCD token space GUIDs.
Returns the PCD token space GUID that follows TokenSpaceGuid in the list of token spaces
in the platform.
If TokenSpaceGuid is NULL, then a pointer to the first PCD token spaces returned.
If TokenSpaceGuid is the last PCD token space GUID in the list, then NULL is returned.
@param TokenSpaceGuid The pointer to a PCD token space GUID.
@return The next valid token namespace.
**/
GUID *
)
{
return NULL;
}
/**
Sets a value of a patchable PCD entry that is type pointer.
Sets the PCD entry specified by PatchVariable to the value specified by Buffer
and SizeOfBuffer. Buffer is returned. If SizeOfBuffer is greater than
MaximumDatumSize, then set SizeOfBuffer to MaximumDatumSize and return
NULL to indicate that the set operation was not actually performed.
If SizeOfBuffer is set to MAX_ADDRESS, then SizeOfBuffer must be set to
MaximumDatumSize and NULL must be returned.
If PatchVariable is NULL, then ASSERT().
If SizeOfBuffer is NULL, then ASSERT().
If SizeOfBuffer > 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.
@return Return the pointer to the buffer that was set.
**/
VOID *
)
{
if (*SizeOfBuffer > 0) {
}
if ((*SizeOfBuffer > MaximumDatumSize) ||
(*SizeOfBuffer == MAX_ADDRESS)) {
return NULL;
}
}