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audk/MdePkg/Library/DxePcdLib/DxePcdLib.c

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/** @file
Implementation of PcdLib class library for DXE phase.
Copyright (c) 2006 - 2015, 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
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.
**/
#include <PiDxe.h>
#include <Protocol/Pcd.h>
#include <Protocol/PiPcd.h>
#include <Protocol/PcdInfo.h>
#include <Protocol/PiPcdInfo.h>
#include <Library/PcdLib.h>
#include <Library/DebugLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/BaseMemoryLib.h>
PCD_PROTOCOL *mPcd = NULL;
EFI_PCD_PROTOCOL *mPiPcd = NULL;
GET_PCD_INFO_PROTOCOL *mPcdInfo = NULL;
EFI_GET_PCD_INFO_PROTOCOL *mPiPcdInfo = NULL;
/**
Retrieves the PI PCD protocol from the handle database.
@retval EFI_PCD_PROTOCOL * The pointer to the EFI_PCD_PROTOCOL.
**/
EFI_PCD_PROTOCOL *
EFIAPI
GetPiPcdProtocol (
VOID
)
{
EFI_STATUS Status;
if (mPiPcd == NULL) {
//
// PI Pcd protocol defined in PI 1.2 vol3 should be installed before the module
// access DynamicEx type PCD.
//
Status = gBS->LocateProtocol (&gEfiPcdProtocolGuid, NULL, (VOID **) &mPiPcd);
ASSERT_EFI_ERROR (Status);
ASSERT (mPiPcd != NULL);
}
return mPiPcd;
}
/**
Retrieves the PCD protocol from the handle database.
@retval PCD_PROTOCOL * The pointer to the PCD_PROTOCOL.
**/
PCD_PROTOCOL *
EFIAPI
GetPcdProtocol (
VOID
)
{
EFI_STATUS Status;
if (mPcd == NULL) {
//
// PCD protocol need to be installed before the module access Dynamic type PCD.
// But dynamic type PCD is not required in PI 1.2 specification.
//
Status = gBS->LocateProtocol (&gPcdProtocolGuid, NULL, (VOID **)&mPcd);
ASSERT_EFI_ERROR (Status);
ASSERT (mPcd != NULL);
}
return mPcd;
}
/**
Retrieves the PI PCD info protocol from the handle database.
@retval EFI_GET_PCD_INFO_PROTOCOL * The pointer to the EFI_GET_PCD_INFO_PROTOCOL defined in PI 1.2.1 Vol 3.
**/
EFI_GET_PCD_INFO_PROTOCOL *
GetPiPcdInfoProtocolPointer (
VOID
)
{
EFI_STATUS Status;
if (mPiPcdInfo == NULL) {
Status = gBS->LocateProtocol (&gEfiGetPcdInfoProtocolGuid, NULL, (VOID **)&mPiPcdInfo);
ASSERT_EFI_ERROR (Status);
ASSERT (mPiPcdInfo != NULL);
}
return mPiPcdInfo;
}
/**
Retrieves the PCD info protocol from the handle database.
@retval GET_PCD_INFO_PROTOCOL * The pointer to the GET_PCD_INFO_PROTOCOL.
**/
GET_PCD_INFO_PROTOCOL *
GetPcdInfoProtocolPointer (
VOID
)
{
EFI_STATUS Status;
if (mPcdInfo == NULL) {
Status = gBS->LocateProtocol (&gGetPcdInfoProtocolGuid, NULL, (VOID **)&mPcdInfo);
ASSERT_EFI_ERROR (Status);
ASSERT (mPcdInfo != NULL);
}
return mPcdInfo;
}
/**
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.
If SkuId >= PCD_MAX_SKU_ID, then ASSERT().
@param SkuId The SKU value that will be used when the PCD service retrieves and sets values
associated with a PCD token.
@return Return the SKU ID that just be set.
**/
UINTN
EFIAPI
LibPcdSetSku (
IN UINTN SkuId
)
{
ASSERT (SkuId < PCD_MAX_SKU_ID);
GetPcdProtocol()->SetSku (SkuId);
return SkuId;
}
/**
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.
**/
UINT8
EFIAPI
LibPcdGet8 (
IN UINTN TokenNumber
)
{
return GetPcdProtocol()->Get8 (TokenNumber);
}
/**
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.
**/
UINT16
EFIAPI
LibPcdGet16 (
IN UINTN TokenNumber
)
{
return GetPcdProtocol()->Get16 (TokenNumber);
}
/**
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.
**/
UINT32
EFIAPI
LibPcdGet32 (
IN UINTN TokenNumber
)
{
return GetPcdProtocol()->Get32 (TokenNumber);
}
/**
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.
**/
UINT64
EFIAPI
LibPcdGet64 (
IN UINTN TokenNumber
)
{
return GetPcdProtocol()->Get64 (TokenNumber);
}
/**
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 *
EFIAPI
LibPcdGetPtr (
IN UINTN TokenNumber
)
{
return GetPcdProtocol()->GetPtr (TokenNumber);
}
/**
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.
**/
BOOLEAN
EFIAPI
LibPcdGetBool (
IN UINTN TokenNumber
)
{
return GetPcdProtocol()->GetBool (TokenNumber);
}
/**
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.
**/
UINTN
EFIAPI
LibPcdGetSize (
IN UINTN TokenNumber
)
{
return GetPcdProtocol()->GetSize (TokenNumber);
}
/**
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.
**/
UINT8
EFIAPI
LibPcdGetEx8 (
IN CONST GUID *Guid,
IN UINTN TokenNumber
)
{
ASSERT (Guid != NULL);
return GetPiPcdProtocol()->Get8 (Guid, TokenNumber);
}
/**
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.
**/
UINT16
EFIAPI
LibPcdGetEx16 (
IN CONST GUID *Guid,
IN UINTN TokenNumber
)
{
ASSERT (Guid != NULL);
return GetPiPcdProtocol()->Get16 (Guid, TokenNumber);
}
/**
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.
**/
UINT32
EFIAPI
LibPcdGetEx32 (
IN CONST GUID *Guid,
IN UINTN TokenNumber
)
{
ASSERT (Guid != NULL);
return GetPiPcdProtocol()->Get32 (Guid, TokenNumber);
}
/**
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.
**/
UINT64
EFIAPI
LibPcdGetEx64 (
IN CONST GUID *Guid,
IN UINTN TokenNumber
)
{
ASSERT (Guid != NULL);
return GetPiPcdProtocol()->Get64 (Guid, TokenNumber);
}
/**
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 *
EFIAPI
LibPcdGetExPtr (
IN CONST GUID *Guid,
IN UINTN TokenNumber
)
{
ASSERT (Guid != NULL);
return GetPiPcdProtocol()->GetPtr (Guid, TokenNumber);
}
/**
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.
**/
BOOLEAN
EFIAPI
LibPcdGetExBool (
IN CONST GUID *Guid,
IN UINTN TokenNumber
)
{
ASSERT (Guid != NULL);
return GetPiPcdProtocol()->GetBool (Guid, TokenNumber);
}
/**
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.
**/
UINTN
EFIAPI
LibPcdGetExSize (
IN CONST GUID *Guid,
IN UINTN TokenNumber
)
{
ASSERT (Guid != NULL);
return GetPiPcdProtocol()->GetSize (Guid, TokenNumber);
}
#ifndef DISABLE_NEW_DEPRECATED_INTERFACES
/**
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.
**/
UINT8
EFIAPI
LibPcdSet8 (
IN UINTN TokenNumber,
IN UINT8 Value
)
{
GetPcdProtocol()->Set8 (TokenNumber, Value);
return Value;
}
/**
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.
**/
UINT16
EFIAPI
LibPcdSet16 (
IN UINTN TokenNumber,
IN UINT16 Value
)
{
GetPcdProtocol()->Set16 (TokenNumber, Value);
return Value;
}
/**
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.
**/
UINT32
EFIAPI
LibPcdSet32 (
IN UINTN TokenNumber,
IN UINT32 Value
)
{
GetPcdProtocol()->Set32 (TokenNumber, Value);
return Value;
}
/**
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.
**/
UINT64
EFIAPI
LibPcdSet64 (
IN UINTN TokenNumber,
IN UINT64 Value
)
{
GetPcdProtocol()->Set64 (TokenNumber, Value);
return Value;
}
/**
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 *
EFIAPI
LibPcdSetPtr (
IN UINTN TokenNumber,
IN OUT UINTN *SizeOfBuffer,
IN CONST VOID *Buffer
)
{
EFI_STATUS Status;
UINTN InputSizeOfBuffer;
ASSERT (SizeOfBuffer != NULL);
if (*SizeOfBuffer > 0) {
ASSERT (Buffer != NULL);
}
InputSizeOfBuffer = *SizeOfBuffer;
Status = GetPcdProtocol()->SetPtr (TokenNumber, SizeOfBuffer, (VOID *) Buffer);
if (EFI_ERROR (Status) && (*SizeOfBuffer < InputSizeOfBuffer)) {
return NULL;
}
return (VOID *)Buffer;
}
/**
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.
**/
BOOLEAN
EFIAPI
LibPcdSetBool (
IN UINTN TokenNumber,
IN BOOLEAN Value
)
{
GetPcdProtocol()->SetBool (TokenNumber, Value);
return Value;
}
/**
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.
**/
UINT8
EFIAPI
LibPcdSetEx8 (
IN CONST GUID *Guid,
IN UINTN TokenNumber,
IN UINT8 Value
)
{
ASSERT (Guid != NULL);
GetPiPcdProtocol()->Set8 (Guid, TokenNumber, Value);
return Value;
}
/**
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.
**/
UINT16
EFIAPI
LibPcdSetEx16 (
IN CONST GUID *Guid,
IN UINTN TokenNumber,
IN UINT16 Value
)
{
ASSERT (Guid != NULL);
GetPiPcdProtocol()->Set16 (Guid, TokenNumber, Value);
return Value;
}
/**
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.
**/
UINT32
EFIAPI
LibPcdSetEx32 (
IN CONST GUID *Guid,
IN UINTN TokenNumber,
IN UINT32 Value
)
{
ASSERT (Guid != NULL);
GetPiPcdProtocol()->Set32 (Guid, TokenNumber, Value);
return Value;
}
/**
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.
**/
UINT64
EFIAPI
LibPcdSetEx64 (
IN CONST GUID *Guid,
IN UINTN TokenNumber,
IN UINT64 Value
)
{
ASSERT (Guid != NULL);
GetPiPcdProtocol()->Set64 (Guid, TokenNumber, Value);
return Value;
}
/**
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 pointer 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;
UINTN InputSizeOfBuffer;
ASSERT (Guid != NULL);
ASSERT (SizeOfBuffer != NULL);
if (*SizeOfBuffer > 0) {
ASSERT (Buffer != NULL);
}
InputSizeOfBuffer = *SizeOfBuffer;
Status = GetPiPcdProtocol()->SetPtr (Guid, TokenNumber, SizeOfBuffer, Buffer);
if (EFI_ERROR (Status) && (*SizeOfBuffer < InputSizeOfBuffer)) {
return NULL;
}
return Buffer;
}
/**
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.
**/
BOOLEAN
EFIAPI
LibPcdSetExBool (
IN CONST GUID *Guid,
IN UINTN TokenNumber,
IN BOOLEAN Value
)
{
ASSERT (Guid != NULL);
GetPiPcdProtocol()->SetBool (Guid, TokenNumber, Value);
return Value;
}
#endif
/**
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.
@param[in] TokenNumber The PCD token number to set a current value for.
@param[in] Value The 8-bit value to set.
@return The status of the set operation.
**/
RETURN_STATUS
EFIAPI
LibPcdSet8S (
IN UINTN TokenNumber,
IN UINT8 Value
)
{
return GetPcdProtocol()->Set8 (TokenNumber, Value);
}
/**
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.
@param[in] TokenNumber The PCD token number to set a current value for.
@param[in] Value The 16-bit value to set.
@return The status of the set operation.
**/
RETURN_STATUS
EFIAPI
LibPcdSet16S (
IN UINTN TokenNumber,
IN UINT16 Value
)
{
return GetPcdProtocol()->Set16 (TokenNumber, Value);
}
/**
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.
@param[in] TokenNumber The PCD token number to set a current value for.
@param[in] Value The 32-bit value to set.
@return The status of the set operation.
**/
RETURN_STATUS
EFIAPI
LibPcdSet32S (
IN UINTN TokenNumber,
IN UINT32 Value
)
{
return GetPcdProtocol()->Set32 (TokenNumber, Value);
}
/**
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.
@param[in] TokenNumber The PCD token number to set a current value for.
@param[in] Value The 64-bit value to set.
@return The status of the set operation.
**/
RETURN_STATUS
EFIAPI
LibPcdSet64S (
IN UINTN TokenNumber,
IN UINT64 Value
)
{
return GetPcdProtocol()->Set64 (TokenNumber, Value);
}
/**
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. If SizeOfBuffer is greater than the maximum size
support by TokenNumber, then set SizeOfBuffer to the maximum size supported by
TokenNumber and return EFI_INVALID_PARAMETER 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 EFI_INVALID_PARAMETER 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 The status of the set operation.
**/
RETURN_STATUS
EFIAPI
LibPcdSetPtrS (
IN UINTN TokenNumber,
IN OUT UINTN *SizeOfBuffer,
IN CONST VOID *Buffer
)
{
ASSERT (SizeOfBuffer != NULL);
if (*SizeOfBuffer > 0) {
ASSERT (Buffer != NULL);
}
return GetPcdProtocol()->SetPtr (TokenNumber, SizeOfBuffer, (VOID *) Buffer);
}
/**
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.
@param[in] TokenNumber The PCD token number to set a current value for.
@param[in] Value The boolean value to set.
@return The status of the set operation.
**/
RETURN_STATUS
EFIAPI
LibPcdSetBoolS (
IN UINTN TokenNumber,
IN BOOLEAN Value
)
{
return GetPcdProtocol()->SetBool (TokenNumber, Value);
}
/**
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.
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 The status of the set operation.
**/
RETURN_STATUS
EFIAPI
LibPcdSetEx8S (
IN CONST GUID *Guid,
IN UINTN TokenNumber,
IN UINT8 Value
)
{
ASSERT (Guid != NULL);
return GetPiPcdProtocol()->Set8 (Guid, TokenNumber, Value);
}
/**
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.
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 The status of the set operation.
**/
RETURN_STATUS
EFIAPI
LibPcdSetEx16S (
IN CONST GUID *Guid,
IN UINTN TokenNumber,
IN UINT16 Value
)
{
ASSERT (Guid != NULL);
return GetPiPcdProtocol()->Set16 (Guid, TokenNumber, Value);
}
/**
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.
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 The status of the set operation.
**/
RETURN_STATUS
EFIAPI
LibPcdSetEx32S (
IN CONST GUID *Guid,
IN UINTN TokenNumber,
IN UINT32 Value
)
{
ASSERT (Guid != NULL);
return GetPiPcdProtocol()->Set32 (Guid, TokenNumber, Value);
}
/**
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.
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 The status of the set operation.
**/
RETURN_STATUS
EFIAPI
LibPcdSetEx64S (
IN CONST GUID *Guid,
IN UINTN TokenNumber,
IN UINT64 Value
)
{
ASSERT (Guid != NULL);
return GetPiPcdProtocol()->Set64 (Guid, TokenNumber, Value);
}
/**
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. If SizeOfBuffer is greater than the maximum size
support by TokenNumber, then set SizeOfBuffer to the maximum size supported by
TokenNumber and return EFI_INVALID_PARAMETER 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 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 The status of the set operation.
**/
RETURN_STATUS
EFIAPI
LibPcdSetExPtrS (
IN CONST GUID *Guid,
IN UINTN TokenNumber,
IN OUT UINTN *SizeOfBuffer,
IN VOID *Buffer
)
{
ASSERT (Guid != NULL);
ASSERT (SizeOfBuffer != NULL);
if (*SizeOfBuffer > 0) {
ASSERT (Buffer != NULL);
}
return GetPiPcdProtocol()->SetPtr (Guid, TokenNumber, SizeOfBuffer, Buffer);
}
/**
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.
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 The status of the set operation.
**/
RETURN_STATUS
EFIAPI
LibPcdSetExBoolS (
IN CONST GUID *Guid,
IN UINTN TokenNumber,
IN BOOLEAN Value
)
{
ASSERT (Guid != NULL);
return GetPiPcdProtocol()->SetBool (Guid, TokenNumber, Value);
}
/**
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.
**/
VOID
EFIAPI
LibPcdCallbackOnSet (
IN CONST GUID *Guid, OPTIONAL
IN UINTN TokenNumber,
IN PCD_CALLBACK NotificationFunction
)
{
EFI_STATUS Status;
ASSERT (NotificationFunction != NULL);
Status = GetPiPcdProtocol()->CallbackOnSet (Guid, TokenNumber, (EFI_PCD_PROTOCOL_CALLBACK) NotificationFunction);
ASSERT_EFI_ERROR (Status);
return;
}
/**
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.
**/
VOID
EFIAPI
LibPcdCancelCallback (
IN CONST GUID *Guid, OPTIONAL
IN UINTN TokenNumber,
IN PCD_CALLBACK NotificationFunction
)
{
EFI_STATUS Status;
ASSERT (NotificationFunction != NULL);
Status = GetPiPcdProtocol()->CancelCallback (Guid, TokenNumber, (EFI_PCD_PROTOCOL_CALLBACK) NotificationFunction);
ASSERT_EFI_ERROR (Status);
return;
}
/**
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.
**/
UINTN
EFIAPI
LibPcdGetNextToken (
IN CONST GUID *Guid, OPTIONAL
IN UINTN TokenNumber
)
{
EFI_STATUS Status;
Status = GetPiPcdProtocol()->GetNextToken (Guid, &TokenNumber);
ASSERT (!EFI_ERROR (Status) || TokenNumber == 0);
return TokenNumber;
}
/**
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 the a PCD token space GUID.
@return The next valid token namespace.
**/
GUID *
EFIAPI
LibPcdGetNextTokenSpace (
IN CONST GUID *TokenSpaceGuid
)
{
GetPiPcdProtocol()->GetNextTokenSpace (&TokenSpaceGuid);
return (GUID *)TokenSpaceGuid;
}
/**
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[out] 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 been set.
**/
VOID *
EFIAPI
LibPatchPcdSetPtr (
OUT 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;
}
/**
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. If SizeOfBuffer is greater than MaximumDatumSize,
then set SizeOfBuffer to MaximumDatumSize and return RETURN_INVALID_PARAMETER
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 RETURN_INVALID_PARAMETER 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[out] 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 The status of the set operation.
**/
RETURN_STATUS
EFIAPI
LibPatchPcdSetPtrS (
OUT 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 RETURN_INVALID_PARAMETER;
}
CopyMem (PatchVariable, Buffer, *SizeOfBuffer);
return RETURN_SUCCESS;
}
/**
Sets a value and size 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 SizeOfPatchVariable is NULL, then ASSERT().
If SizeOfBuffer is NULL, then ASSERT().
If SizeOfBuffer > 0 and Buffer is NULL, then ASSERT().
@param[out] PatchVariable A pointer to the global variable in a module that is
the target of the set operation.
@param[out] SizeOfPatchVariable A pointer to the size, in bytes, of PatchVariable.
@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 been set.
**/
VOID *
EFIAPI
LibPatchPcdSetPtrAndSize (
OUT VOID *PatchVariable,
OUT UINTN *SizeOfPatchVariable,
IN UINTN MaximumDatumSize,
IN OUT UINTN *SizeOfBuffer,
IN CONST VOID *Buffer
)
{
ASSERT (PatchVariable != NULL);
ASSERT (SizeOfPatchVariable != NULL);
ASSERT (SizeOfBuffer != NULL);
if (*SizeOfBuffer > 0) {
ASSERT (Buffer != NULL);
}
if ((*SizeOfBuffer > MaximumDatumSize) ||
(*SizeOfBuffer == MAX_ADDRESS)) {
*SizeOfBuffer = MaximumDatumSize;
return NULL;
}
CopyMem (PatchVariable, Buffer, *SizeOfBuffer);
*SizeOfPatchVariable = *SizeOfBuffer;
return (VOID *) Buffer;
}
/**
Sets a value and size of a patchable PCD entry that is type pointer.
Sets the PCD entry specified by PatchVariable to the value specified
by Buffer and SizeOfBuffer. If SizeOfBuffer is greater than MaximumDatumSize,
then set SizeOfBuffer to MaximumDatumSize and return RETURN_INVALID_PARAMETER
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 RETURN_INVALID_PARAMETER must be returned.
If PatchVariable is NULL, then ASSERT().
If SizeOfPatchVariable is NULL, then ASSERT().
If SizeOfBuffer is NULL, then ASSERT().
If SizeOfBuffer > 0 and Buffer is NULL, then ASSERT().
@param[out] PatchVariable A pointer to the global variable in a module that is
the target of the set operation.
@param[out] SizeOfPatchVariable A pointer to the size, in bytes, of PatchVariable.
@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 The status of the set operation.
**/
RETURN_STATUS
EFIAPI
LibPatchPcdSetPtrAndSizeS (
OUT VOID *PatchVariable,
OUT UINTN *SizeOfPatchVariable,
IN UINTN MaximumDatumSize,
IN OUT UINTN *SizeOfBuffer,
IN CONST VOID *Buffer
)
{
ASSERT (PatchVariable != NULL);
ASSERT (SizeOfPatchVariable != NULL);
ASSERT (SizeOfBuffer != NULL);
if (*SizeOfBuffer > 0) {
ASSERT (Buffer != NULL);
}
if ((*SizeOfBuffer > MaximumDatumSize) ||
(*SizeOfBuffer == MAX_ADDRESS)) {
*SizeOfBuffer = MaximumDatumSize;
return RETURN_INVALID_PARAMETER;
}
CopyMem (PatchVariable, Buffer, *SizeOfBuffer);
*SizeOfPatchVariable = *SizeOfBuffer;
return RETURN_SUCCESS;
}
/**
Retrieve additional information associated with a PCD token.
This includes information such as the type of value the TokenNumber is associated with as well as possible
human readable name that is associated with the token.
If TokenNumber is not in the default token space specified, then ASSERT().
@param[in] TokenNumber The PCD token number.
@param[out] PcdInfo The returned information associated with the requested TokenNumber.
The caller is responsible for freeing the buffer that is allocated by callee for PcdInfo->PcdName.
**/
VOID
EFIAPI
LibPcdGetInfo (
IN UINTN TokenNumber,
OUT PCD_INFO *PcdInfo
)
{
EFI_STATUS Status;
Status = GetPcdInfoProtocolPointer()->GetInfo (TokenNumber, (EFI_PCD_INFO *) PcdInfo);
ASSERT_EFI_ERROR (Status);
}
/**
Retrieve additional information associated with a PCD token.
This includes information such as the type of value the TokenNumber is associated with as well as possible
human readable name that is associated with the token.
If TokenNumber is not in the token space specified by Guid, then ASSERT().
@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[out] PcdInfo The returned information associated with the requested TokenNumber.
The caller is responsible for freeing the buffer that is allocated by callee for PcdInfo->PcdName.
**/
VOID
EFIAPI
LibPcdGetInfoEx (
IN CONST GUID *Guid,
IN UINTN TokenNumber,
OUT PCD_INFO *PcdInfo
)
{
EFI_STATUS Status;
Status = GetPiPcdInfoProtocolPointer()->GetInfo (Guid, TokenNumber, (EFI_PCD_INFO *) PcdInfo);
ASSERT_EFI_ERROR (Status);
}
/**
Retrieve the currently set SKU Id.
If the sku id got >= PCD_MAX_SKU_ID, then ASSERT().
@return The currently set SKU Id. If the platform has not set at a SKU Id, then the
default SKU Id value of 0 is returned. If the platform has set a SKU Id, then the currently set SKU
Id is returned.
**/
UINTN
EFIAPI
LibPcdGetSku (
VOID
)
{
UINTN SkuId;
SkuId = GetPiPcdInfoProtocolPointer()->GetSku ();
ASSERT (SkuId < PCD_MAX_SKU_ID);
return SkuId;
}
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