diff options
Diffstat (limited to 'MdeModulePkg/Universal/PCD/Dxe/Pcd.c')
| -rw-r--r-- | MdeModulePkg/Universal/PCD/Dxe/Pcd.c | 737 |
1 files changed, 737 insertions, 0 deletions
diff --git a/MdeModulePkg/Universal/PCD/Dxe/Pcd.c b/MdeModulePkg/Universal/PCD/Dxe/Pcd.c new file mode 100644 index 0000000000..861de0fa84 --- /dev/null +++ b/MdeModulePkg/Universal/PCD/Dxe/Pcd.c @@ -0,0 +1,737 @@ +/** @file
+PCD DXE driver
+
+Copyright (c) 2006 - 2007, 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 common header file for this module.
+//
+#include "CommonHeader.h"
+
+#include "Service.h"
+
+EFI_LOCK mPcdDatabaseLock = EFI_INITIALIZE_LOCK_VARIABLE(TPL_CALLBACK);
+
+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 mNewHandle = 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 (
+ &mNewHandle,
+ &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
+ )
+{
+ EFI_STATUS Status;
+
+ ASSERT (CallBackFunction != NULL);
+
+ //
+ // Aquire lock to prevent reentrance from TPL_CALLBACK level
+ //
+ EfiAcquireLock (&mPcdDatabaseLock);
+
+ Status = DxeRegisterCallBackWorker (TokenNumber, Guid, CallBackFunction);
+
+ EfiReleaseLock (&mPcdDatabaseLock);
+
+ return Status;
+}
+
+
+
+EFI_STATUS
+EFIAPI
+DxeUnRegisterCallBackOnSet (
+ IN CONST EFI_GUID *Guid, OPTIONAL
+ IN UINTN TokenNumber,
+ IN PCD_PROTOCOL_CALLBACK CallBackFunction
+ )
+{
+ EFI_STATUS Status;
+
+ ASSERT (CallBackFunction != NULL);
+
+ //
+ // Aquire lock to prevent reentrance from TPL_CALLBACK level
+ //
+ EfiAcquireLock (&mPcdDatabaseLock);
+
+ Status = DxeUnRegisterCallBackWorker (TokenNumber, Guid, CallBackFunction);
+
+ EfiReleaseLock (&mPcdDatabaseLock);
+
+ return Status;
+}
+
+
+
+EFI_STATUS
+EFIAPI
+DxePcdGetNextToken (
+ IN CONST EFI_GUID *Guid, OPTIONAL
+ IN OUT UINTN *TokenNumber
+ )
+{
+ EFI_STATUS Status;
+ BOOLEAN PeiExMapTableEmpty;
+ BOOLEAN DxeExMapTableEmpty;
+
+ if (!FeaturePcdGet (PcdDxePcdDatabaseTraverseEnabled)) {
+ return EFI_UNSUPPORTED;
+ }
+
+ Status = EFI_NOT_FOUND;
+ PeiExMapTableEmpty = PEI_EXMAP_TABLE_EMPTY;
+ DxeExMapTableEmpty = DXE_EXMAP_TABLE_EMPTY;
+
+ //
+ // 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 (PeiExMapTableEmpty && DxeExMapTableEmpty) {
+ *TokenNumber = PCD_INVALID_TOKEN_NUMBER;
+ return EFI_NOT_FOUND;
+ }
+
+ if (!PeiExMapTableEmpty) {
+ 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 (!DxeExMapTableEmpty) {
+ Status = ExGetNextTokeNumber (
+ Guid,
+ TokenNumber,
+ mPcdDatabase->DxeDb.Init.GuidTable,
+ sizeof(mPcdDatabase->DxeDb.Init.GuidTable),
+ mPcdDatabase->DxeDb.Init.ExMapTable,
+ sizeof(mPcdDatabase->DxeDb.Init.ExMapTable)
+ );
+ }
+
+ return Status;
+}
+
+STATIC
+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;
+ BOOLEAN PeiExMapTableEmpty;
+ BOOLEAN DxeExMapTableEmpty;
+
+ if (!FeaturePcdGet (PcdDxePcdDatabaseTraverseEnabled)) {
+ return EFI_UNSUPPORTED;
+ }
+
+ ASSERT (Guid != NULL);
+
+ PeiExMapTableEmpty = PEI_EXMAP_TABLE_EMPTY;
+ DxeExMapTableEmpty = DXE_EXMAP_TABLE_EMPTY;
+
+ if (PeiExMapTableEmpty && DxeExMapTableEmpty) {
+ if (*Guid != NULL) {
+ return EFI_NOT_FOUND;
+ } else {
+ return EFI_SUCCESS;
+ }
+ }
+
+
+ if (TmpTokenSpaceBuffer[0] == NULL) {
+ PeiTokenSpaceTableSize = 0;
+
+ if (!PeiExMapTableEmpty) {
+ PeiTokenSpaceTableSize = PEI_EXMAPPING_TABLE_SIZE;
+ PeiTokenSpaceTable = GetDistinctTokenSpace (&PeiTokenSpaceTableSize,
+ mPcdDatabase->PeiDb.Init.ExMapTable,
+ mPcdDatabase->PeiDb.Init.GuidTable
+ );
+ CopyMem (TmpTokenSpaceBuffer, PeiTokenSpaceTable, sizeof (EFI_GUID*) * PeiTokenSpaceTableSize);
+ }
+
+ if (!DxeExMapTableEmpty) {
+ 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;
+
+}
+
+
|