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audk/EdkModulePkg/Universal/PCD/Dxe/Pcd.c

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/** @file
PCD DXE driver
Copyright (c) 2006, Intel Corporation
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: Pcd.c
**/
#include "Service.h"
PCD_PROTOCOL mPcdInstance = {
DxePcdSetSku,
DxePcdGet8,
DxePcdGet16,
DxePcdGet32,
DxePcdGet64,
DxePcdGetPtr,
DxePcdGetBool,
DxePcdGetSize,
DxePcdGet8Ex,
DxePcdGet16Ex,
DxePcdGet32Ex,
DxePcdGet64Ex,
DxePcdGetPtrEx,
DxePcdGetBoolEx,
DxePcdGetSizeEx,
DxePcdSet8,
DxePcdSet16,
DxePcdSet32,
DxePcdSet64,
DxePcdSetPtr,
DxePcdSetBool,
DxePcdSet8Ex,
DxePcdSet16Ex,
DxePcdSet32Ex,
DxePcdSet64Ex,
DxePcdSetPtrEx,
DxePcdSetBoolEx,
DxeRegisterCallBackOnSet,
DxeUnRegisterCallBackOnSet,
DxePcdGetNextToken,
DxePcdGetNextTokenSpace
};
//
// Static global to reduce the code size
//
static EFI_HANDLE NewHandle = NULL;
EFI_STATUS
EFIAPI
PcdDxeInit (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
//
// Make sure the Pcd Protocol is not already installed in the system
//
ASSERT_PROTOCOL_ALREADY_INSTALLED (NULL, &gPcdProtocolGuid);
BuildPcdDxeDataBase ();
Status = gBS->InstallProtocolInterface (
&NewHandle,
&gPcdProtocolGuid,
EFI_NATIVE_INTERFACE,
&mPcdInstance
);
ASSERT_EFI_ERROR (Status);
return EFI_SUCCESS;
}
VOID
EFIAPI
DxePcdSetSku (
IN UINTN SkuId
)
{
mPcdDatabase->PeiDb.Init.SystemSkuId = (SKU_ID) SkuId;
return;
}
UINT8
EFIAPI
DxePcdGet8 (
IN UINTN TokenNumber
)
{
return *((UINT8 *) GetWorker (TokenNumber, sizeof (UINT8)));
}
UINT16
EFIAPI
DxePcdGet16 (
IN UINTN TokenNumber
)
{
return ReadUnaligned16 (GetWorker (TokenNumber, sizeof (UINT16)));
}
UINT32
EFIAPI
DxePcdGet32 (
IN UINTN TokenNumber
)
{
return ReadUnaligned32 (GetWorker (TokenNumber, sizeof (UINT32)));
}
UINT64
EFIAPI
DxePcdGet64 (
IN UINTN TokenNumber
)
{
return ReadUnaligned64(GetWorker (TokenNumber, sizeof (UINT64)));
}
VOID *
EFIAPI
DxePcdGetPtr (
IN UINTN TokenNumber
)
{
return GetWorker (TokenNumber, 0);
}
BOOLEAN
EFIAPI
DxePcdGetBool (
IN UINTN TokenNumber
)
{
return *((BOOLEAN *) GetWorker (TokenNumber, sizeof (BOOLEAN)));
}
UINTN
EFIAPI
DxePcdGetSize (
IN UINTN TokenNumber
)
{
UINTN Size;
UINT32 *LocalTokenNumberTable;
BOOLEAN IsPeiDb;
UINTN MaxSize;
UINTN TmpTokenNumber;
//
// TokenNumber Zero is reserved as PCD_INVALID_TOKEN_NUMBER.
// We have to decrement TokenNumber by 1 to make it usable
// as the array index.
//
TokenNumber--;
//
// Backup the TokenNumber passed in as GetPtrTypeSize need the original TokenNumber
//
TmpTokenNumber = TokenNumber;
// EBC compiler is very choosy. It may report warning about comparison
// between UINTN and 0 . So we add 1 in each size of the
// comparison.
ASSERT (TokenNumber + 1 < PCD_TOTAL_TOKEN_NUMBER + 1);
// EBC compiler is very choosy. It may report warning about comparison
// between UINTN and 0 . So we add 1 in each size of the
// comparison.
IsPeiDb = (BOOLEAN) (TokenNumber + 1 < PEI_LOCAL_TOKEN_NUMBER + 1);
TokenNumber = IsPeiDb ? TokenNumber :
(TokenNumber - PEI_LOCAL_TOKEN_NUMBER);
LocalTokenNumberTable = IsPeiDb ? mPcdDatabase->PeiDb.Init.LocalTokenNumberTable
: mPcdDatabase->DxeDb.Init.LocalTokenNumberTable;
Size = (LocalTokenNumberTable[TokenNumber] & PCD_DATUM_TYPE_ALL_SET) >> PCD_DATUM_TYPE_SHIFT;
if (Size == 0) {
//
// For pointer type, we need to scan the SIZE_TABLE to get the current size.
//
return GetPtrTypeSize (TmpTokenNumber, &MaxSize);
} else {
return Size;
}
}
UINT8
EFIAPI
DxePcdGet8Ex (
IN CONST EFI_GUID *Guid,
IN UINTN ExTokenNumber
)
{
return *((UINT8 *) ExGetWorker (Guid, ExTokenNumber, sizeof(UINT8)));
}
UINT16
EFIAPI
DxePcdGet16Ex (
IN CONST EFI_GUID *Guid,
IN UINTN ExTokenNumber
)
{
return ReadUnaligned16 (ExGetWorker (Guid, ExTokenNumber, sizeof(UINT16)));
}
UINT32
EFIAPI
DxePcdGet32Ex (
IN CONST EFI_GUID *Guid,
IN UINTN ExTokenNumber
)
{
return ReadUnaligned32 (ExGetWorker (Guid, ExTokenNumber, sizeof(UINT32)));
}
UINT64
EFIAPI
DxePcdGet64Ex (
IN CONST EFI_GUID *Guid,
IN UINTN ExTokenNumber
)
{
return ReadUnaligned64 (ExGetWorker (Guid, ExTokenNumber, sizeof(UINT64)));
}
VOID *
EFIAPI
DxePcdGetPtrEx (
IN CONST EFI_GUID *Guid,
IN UINTN ExTokenNumber
)
{
return ExGetWorker (Guid, ExTokenNumber, 0);
}
BOOLEAN
EFIAPI
DxePcdGetBoolEx (
IN CONST EFI_GUID *Guid,
IN UINTN ExTokenNumber
)
{
return *((BOOLEAN *) ExGetWorker (Guid, ExTokenNumber, sizeof(BOOLEAN)));
}
UINTN
EFIAPI
DxePcdGetSizeEx (
IN CONST EFI_GUID *Guid,
IN UINTN ExTokenNumber
)
{
return DxePcdGetSize(GetExPcdTokenNumber (Guid, (UINT32) ExTokenNumber));
}
EFI_STATUS
EFIAPI
DxePcdSet8 (
IN UINTN TokenNumber,
IN UINT8 Value
)
{
return SetValueWorker (TokenNumber, &Value, sizeof (Value));
}
EFI_STATUS
EFIAPI
DxePcdSet16 (
IN UINTN TokenNumber,
IN UINT16 Value
)
{
return SetValueWorker (TokenNumber, &Value, sizeof (Value));
}
EFI_STATUS
EFIAPI
DxePcdSet32 (
IN UINTN TokenNumber,
IN UINT32 Value
)
{
return SetValueWorker (TokenNumber, &Value, sizeof (Value));
}
EFI_STATUS
EFIAPI
DxePcdSet64 (
IN UINTN TokenNumber,
IN UINT64 Value
)
{
return SetValueWorker (TokenNumber, &Value, sizeof (Value));
}
EFI_STATUS
EFIAPI
DxePcdSetPtr (
IN UINTN TokenNumber,
IN OUT UINTN *SizeOfBuffer,
IN VOID *Buffer
)
{
return SetWorker (TokenNumber, Buffer, SizeOfBuffer, TRUE);
}
EFI_STATUS
EFIAPI
DxePcdSetBool (
IN UINTN TokenNumber,
IN BOOLEAN Value
)
{
return SetValueWorker (TokenNumber, &Value, sizeof (Value));
}
EFI_STATUS
EFIAPI
DxePcdSet8Ex (
IN CONST EFI_GUID *Guid,
IN UINTN ExTokenNumber,
IN UINT8 Value
)
{
return ExSetValueWorker (ExTokenNumber, Guid, &Value, sizeof (Value));
}
EFI_STATUS
EFIAPI
DxePcdSet16Ex (
IN CONST EFI_GUID *Guid,
IN UINTN ExTokenNumber,
IN UINT16 Value
)
{
return ExSetValueWorker (ExTokenNumber, Guid, &Value, sizeof (Value));
}
EFI_STATUS
EFIAPI
DxePcdSet32Ex (
IN CONST EFI_GUID *Guid,
IN UINTN ExTokenNumber,
IN UINT32 Value
)
{
return ExSetValueWorker (ExTokenNumber, Guid, &Value, sizeof (Value));
}
EFI_STATUS
EFIAPI
DxePcdSet64Ex (
IN CONST EFI_GUID *Guid,
IN UINTN ExTokenNumber,
IN UINT64 Value
)
{
return ExSetValueWorker (ExTokenNumber, Guid, &Value, sizeof (Value));
}
EFI_STATUS
EFIAPI
DxePcdSetPtrEx (
IN CONST EFI_GUID *Guid,
IN UINTN ExTokenNumber,
IN OUT UINTN *SizeOfBuffer,
IN VOID *Buffer
)
{
return ExSetWorker(ExTokenNumber, Guid, Buffer, SizeOfBuffer, TRUE);
}
EFI_STATUS
EFIAPI
DxePcdSetBoolEx (
IN CONST EFI_GUID *Guid,
IN UINTN ExTokenNumber,
IN BOOLEAN Value
)
{
return ExSetValueWorker (ExTokenNumber, Guid, &Value, sizeof (Value));
}
EFI_STATUS
EFIAPI
DxeRegisterCallBackOnSet (
IN CONST EFI_GUID *Guid, OPTIONAL
IN UINTN TokenNumber,
IN PCD_PROTOCOL_CALLBACK CallBackFunction
)
{
ASSERT (CallBackFunction != NULL);
return DxeRegisterCallBackWorker (TokenNumber, Guid, CallBackFunction);
}
EFI_STATUS
EFIAPI
DxeUnRegisterCallBackOnSet (
IN CONST EFI_GUID *Guid, OPTIONAL
IN UINTN TokenNumber,
IN PCD_PROTOCOL_CALLBACK CallBackFunction
)
{
ASSERT (CallBackFunction != NULL);
return DxeUnRegisterCallBackWorker (TokenNumber, Guid, CallBackFunction);
}
EFI_STATUS
EFIAPI
DxePcdGetNextToken (
IN CONST EFI_GUID *Guid, OPTIONAL
IN OUT UINTN *TokenNumber
)
{
EFI_STATUS Status;
if (!FeaturePcdGet (PcdDxePcdDatabaseTraverseEnabled)) {
return EFI_UNSUPPORTED;
}
Status = EFI_NOT_FOUND;
//
// Scan the local token space
//
if (Guid == NULL) {
// EBC compiler is very choosy. It may report warning about comparison
// between UINTN and 0 . So we add 1 in each size of the
// comparison.
if (((*TokenNumber + 1 > PEI_NEX_TOKEN_NUMBER + 1) && (*TokenNumber + 1 < PEI_LOCAL_TOKEN_NUMBER + 1)) ||
((*TokenNumber + 1 > (PEI_LOCAL_TOKEN_NUMBER + DXE_NEX_TOKEN_NUMBER + 1)))) {
return EFI_NOT_FOUND;
}
(*TokenNumber)++;
if ((*TokenNumber + 1 > PEI_NEX_TOKEN_NUMBER + 1) &&
(*TokenNumber <= PEI_LOCAL_TOKEN_NUMBER)) {
//
// The first Non-Ex type Token Number for DXE PCD
// database is PEI_LOCAL_TOKEN_NUMBER
//
*TokenNumber = PEI_LOCAL_TOKEN_NUMBER;
} else if (*TokenNumber + 1 > DXE_NEX_TOKEN_NUMBER + PEI_LOCAL_TOKEN_NUMBER + 1) {
*TokenNumber = PCD_INVALID_TOKEN_NUMBER;
}
return EFI_SUCCESS;
}
if (PEI_EXMAP_TABLE_EMPTY && DXE_EXMAP_TABLE_EMPTY) {
*TokenNumber = PCD_INVALID_TOKEN_NUMBER;
return EFI_NOT_FOUND;
}
if (!PEI_EXMAP_TABLE_EMPTY) {
Status = ExGetNextTokeNumber (
Guid,
TokenNumber,
mPcdDatabase->PeiDb.Init.GuidTable,
sizeof(mPcdDatabase->PeiDb.Init.GuidTable),
mPcdDatabase->PeiDb.Init.ExMapTable,
sizeof(mPcdDatabase->PeiDb.Init.ExMapTable)
);
}
if (Status == EFI_SUCCESS) {
return Status;
}
if (!DXE_EXMAP_TABLE_EMPTY) {
Status = ExGetNextTokeNumber (
Guid,
TokenNumber,
mPcdDatabase->DxeDb.Init.GuidTable,
sizeof(mPcdDatabase->DxeDb.Init.GuidTable),
mPcdDatabase->DxeDb.Init.ExMapTable,
sizeof(mPcdDatabase->DxeDb.Init.ExMapTable)
);
}
return Status;
}
EFI_GUID **
GetDistinctTokenSpace (
IN OUT UINTN *ExMapTableSize,
IN DYNAMICEX_MAPPING *ExMapTable,
IN EFI_GUID *GuidTable
)
{
EFI_GUID **DistinctTokenSpace;
UINTN OldGuidIndex;
UINTN TsIdx;
UINTN Idx;
DistinctTokenSpace = AllocateZeroPool (*ExMapTableSize * sizeof (EFI_GUID *));
ASSERT (DistinctTokenSpace != NULL);
TsIdx = 0;
OldGuidIndex = ExMapTable[0].ExGuidIndex;
DistinctTokenSpace[TsIdx] = &GuidTable[OldGuidIndex];
for (Idx = 1; Idx < *ExMapTableSize; Idx++) {
if (ExMapTable[Idx].ExGuidIndex != OldGuidIndex) {
OldGuidIndex = ExMapTable[Idx].ExGuidIndex;
DistinctTokenSpace[++TsIdx] = &GuidTable[OldGuidIndex];
}
}
//
// The total number of Distinct Token Space
// is TsIdx + 1 because we use TsIdx as a index
// to the DistinctTokenSpace[]
//
*ExMapTableSize = TsIdx + 1;
return DistinctTokenSpace;
}
//
// Just pre-allocate a memory buffer that is big enough to
// host all distinct TokenSpace guid in both
// PEI ExMap and DXE ExMap.
//
STATIC EFI_GUID *TmpTokenSpaceBuffer[PEI_EXMAPPING_TABLE_SIZE + DXE_EXMAPPING_TABLE_SIZE] = { 0 };
EFI_STATUS
EFIAPI
DxePcdGetNextTokenSpace (
IN OUT CONST EFI_GUID **Guid
)
{
UINTN Idx;
UINTN Idx2;
UINTN Idx3;
UINTN PeiTokenSpaceTableSize;
UINTN DxeTokenSpaceTableSize;
EFI_GUID **PeiTokenSpaceTable;
EFI_GUID **DxeTokenSpaceTable;
BOOLEAN Match;
if (!FeaturePcdGet (PcdDxePcdDatabaseTraverseEnabled)) {
return EFI_UNSUPPORTED;
}
ASSERT (Guid != NULL);
if (PEI_EXMAP_TABLE_EMPTY && DXE_EXMAP_TABLE_EMPTY) {
if (*Guid != NULL) {
return EFI_NOT_FOUND;
} else {
return EFI_SUCCESS;
}
}
if (TmpTokenSpaceBuffer[0] == NULL) {
PeiTokenSpaceTableSize = 0;
if (!PEI_EXMAP_TABLE_EMPTY) {
PeiTokenSpaceTableSize = PEI_EXMAPPING_TABLE_SIZE;
PeiTokenSpaceTable = GetDistinctTokenSpace (&PeiTokenSpaceTableSize,
mPcdDatabase->PeiDb.Init.ExMapTable,
mPcdDatabase->PeiDb.Init.GuidTable
);
CopyMem (TmpTokenSpaceBuffer, PeiTokenSpaceTable, sizeof (EFI_GUID*) * PeiTokenSpaceTableSize);
}
if (!DXE_EXMAP_TABLE_EMPTY) {
DxeTokenSpaceTableSize = DXE_EXMAPPING_TABLE_SIZE;
DxeTokenSpaceTable = GetDistinctTokenSpace (&DxeTokenSpaceTableSize,
mPcdDatabase->DxeDb.Init.ExMapTable,
mPcdDatabase->DxeDb.Init.GuidTable
);
//
// Make sure EFI_GUID in DxeTokenSpaceTable does not exist in PeiTokenSpaceTable
//
for (Idx2 = 0, Idx3 = PeiTokenSpaceTableSize; Idx2 < DxeTokenSpaceTableSize; Idx2++) {
Match = FALSE;
for (Idx = 0; Idx < PeiTokenSpaceTableSize; Idx++) {
if (CompareGuid (TmpTokenSpaceBuffer[Idx], DxeTokenSpaceTable[Idx2])) {
Match = TRUE;
break;
}
}
if (!Match) {
TmpTokenSpaceBuffer[Idx3++] = DxeTokenSpaceTable[Idx2];
}
}
}
}
if (*Guid == NULL) {
*Guid = TmpTokenSpaceBuffer[0];
return EFI_SUCCESS;
}
for (Idx = 0; Idx < (PEI_EXMAPPING_TABLE_SIZE + DXE_EXMAPPING_TABLE_SIZE); Idx++) {
if(CompareGuid (*Guid, TmpTokenSpaceBuffer[Idx])) {
Idx++;
*Guid = TmpTokenSpaceBuffer[Idx];
return EFI_SUCCESS;
}
}
return EFI_NOT_FOUND;
}
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