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[mirror_edk2.git] / EdkModulePkg / Universal / PCD / Pei / Pcd.c

/** @file PCD PEIM\r
\r
Copyright (c) 2006, Intel Corporation                                                         \r
All rights reserved. This program and the accompanying materials                          \r
are licensed and made available under the terms and conditions of the BSD License         \r
which accompanies this distribution.  The full text of the license may be found at        \r
http://opensource.org/licenses/bsd-license.php                                            \r
                                                                                          \r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     \r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             \r
\r
\r
Module Name: Pcd.c\r
\r
**/\r
\r
#include "Service.h"\r
\r
\r
PCD_PPI mPcdPpiInstance = {\r
  PeiPcdSetSku,\r
\r
  PeiPcdGet8,\r
  PeiPcdGet16,          \r
  PeiPcdGet32,          \r
  PeiPcdGet64,          \r
  PeiPcdGetPtr,         \r
  PeiPcdGetBool,     \r
  PeiPcdGetSize,\r
\r
  PeiPcdGet8Ex,\r
  PeiPcdGet16Ex,          \r
  PeiPcdGet32Ex,          \r
  PeiPcdGet64Ex,          \r
  PeiPcdGetPtrEx,         \r
  PeiPcdGetBoolEx,     \r
  PeiPcdGetSizeEx,\r
  \r
  PeiPcdSet8,\r
  PeiPcdSet16,          \r
  PeiPcdSet32,          \r
  PeiPcdSet64,          \r
  PeiPcdSetPtr,         \r
  PeiPcdSetBool,     \r
\r
  PeiPcdSet8Ex,\r
  PeiPcdSet16Ex,          \r
  PeiPcdSet32Ex,          \r
  PeiPcdSet64Ex,          \r
  PeiPcdSetPtrEx,         \r
  PeiPcdSetBoolEx,\r
\r
  PeiRegisterCallBackOnSet,\r
  PcdUnRegisterCallBackOnSet,\r
  PeiPcdGetNextToken,\r
  PeiPcdGetNextTokenSpace\r
};\r
\r
\r
\r
STATIC EFI_PEI_PPI_DESCRIPTOR  mPpiPCD = {\r
  (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r
  &gPcdPpiGuid,\r
  &mPcdPpiInstance\r
};\r
\r
\r
\r
EFI_STATUS\r
EFIAPI\r
PcdPeimInit (\r
  IN EFI_FFS_FILE_HEADER      *FfsHeader,\r
  IN EFI_PEI_SERVICES         **PeiServices\r
  )\r
{\r
  EFI_STATUS Status;\r
\r
  BuildPcdDatabase ();\r
  \r
  Status = PeiServicesInstallPpi (&mPpiPCD);\r
\r
  ASSERT_EFI_ERROR (Status);\r
  \r
  return EFI_SUCCESS;\r
}\r
\r
VOID\r
EFIAPI\r
PeiPcdSetSku (\r
  IN  UINTN                  SkuId\r
  )\r
{\r
\r
  GetPcdDatabase()->Init.SystemSkuId = (SKU_ID) SkuId;\r
\r
  return;\r
}\r
\r
\r
\r
UINT8\r
EFIAPI\r
PeiPcdGet8 (\r
  IN UINTN             TokenNumber\r
  )\r
{\r
  return *((UINT8 *) GetWorker (TokenNumber, sizeof (UINT8)));\r
}\r
\r
\r
\r
UINT16\r
EFIAPI\r
PeiPcdGet16 (\r
  IN UINTN             TokenNumber\r
  )\r
{\r
  return ReadUnaligned16 (GetWorker (TokenNumber, sizeof (UINT16)));\r
}\r
\r
\r
\r
UINT32\r
EFIAPI\r
PeiPcdGet32 (\r
  IN UINTN             TokenNumber\r
  )\r
{\r
  return ReadUnaligned32 (GetWorker (TokenNumber, sizeof (UINT32)));\r
}\r
\r
\r
\r
UINT64\r
EFIAPI\r
PeiPcdGet64 (\r
  IN UINTN             TokenNumber\r
  )\r
{\r
  return ReadUnaligned64 (GetWorker (TokenNumber, sizeof (UINT64)));\r
}\r
\r
\r
\r
VOID *\r
EFIAPI\r
PeiPcdGetPtr (\r
  IN UINTN             TokenNumber\r
  )\r
{\r
  return GetWorker (TokenNumber, 0);\r
}\r
\r
\r
\r
BOOLEAN\r
EFIAPI\r
PeiPcdGetBool (\r
  IN UINTN             TokenNumber\r
  )\r
{\r
  return *((BOOLEAN *) GetWorker (TokenNumber, sizeof (BOOLEAN)));\r
}\r
\r
\r
\r
UINTN\r
EFIAPI\r
PeiPcdGetSize (\r
  IN UINTN             TokenNumber\r
  )\r
{\r
  PEI_PCD_DATABASE    *PeiPcdDb;\r
  UINTN               Size;\r
  UINTN               MaxSize;\r
\r
  PeiPcdDb = GetPcdDatabase ();\r
  //\r
  // TokenNumber Zero is reserved as PCD_INVALID_TOKEN_NUMBER.\r
  // We have to decrement TokenNumber by 1 to make it usable\r
  // as the array index.\r
  //\r
  TokenNumber--;\r
\r
  // EBC compiler is very choosy. It may report warning about comparison\r
  // between UINTN and 0 . So we add 1 in each size of the \r
  // comparison.\r
  ASSERT (TokenNumber + 1 < PEI_LOCAL_TOKEN_NUMBER + 1);\r
\r
  Size = (PeiPcdDb->Init.LocalTokenNumberTable[TokenNumber] & PCD_DATUM_TYPE_ALL_SET) >> PCD_DATUM_TYPE_SHIFT;\r
\r
  if (Size == 0) {\r
    //\r
    // For pointer type, we need to scan the SIZE_TABLE to get the current size.\r
    //\r
    return GetPtrTypeSize (TokenNumber, &MaxSize, PeiPcdDb);\r
  } else {\r
    return Size;\r
  }\r
\r
}\r
\r
\r
\r
UINT8\r
EFIAPI\r
PeiPcdGet8Ex (\r
  IN CONST EFI_GUID        *Guid,\r
  IN UINTN             ExTokenNumber\r
  )\r
{\r
  return *((UINT8 *) ExGetWorker (Guid, ExTokenNumber, sizeof (UINT8)));\r
}\r
\r
\r
\r
UINT16\r
EFIAPI\r
PeiPcdGet16Ex (\r
  IN CONST EFI_GUID        *Guid,\r
  IN UINTN             ExTokenNumber\r
  )\r
{\r
  return ReadUnaligned16 (ExGetWorker (Guid, ExTokenNumber, sizeof (UINT16)));\r
}\r
\r
\r
\r
UINT32\r
EFIAPI\r
PeiPcdGet32Ex (\r
  IN CONST EFI_GUID        *Guid,\r
  IN UINTN             ExTokenNumber\r
  )\r
{\r
  return ReadUnaligned32 (ExGetWorker (Guid, ExTokenNumber, sizeof (UINT32)));\r
}\r
\r
\r
\r
UINT64\r
EFIAPI\r
PeiPcdGet64Ex (\r
  IN CONST EFI_GUID        *Guid,\r
  IN UINTN             ExTokenNumber\r
  )\r
{\r
  return ReadUnaligned64 (ExGetWorker (Guid, ExTokenNumber, sizeof (UINT64)));\r
}\r
\r
\r
\r
VOID *\r
EFIAPI\r
PeiPcdGetPtrEx (\r
  IN CONST EFI_GUID        *Guid,\r
  IN UINTN             ExTokenNumber\r
  )\r
{\r
  return ExGetWorker (Guid, ExTokenNumber, 0);\r
}\r
\r
\r
\r
BOOLEAN\r
EFIAPI\r
PeiPcdGetBoolEx (\r
  IN CONST  EFI_GUID        *Guid,\r
  IN UINTN                             ExTokenNumber\r
  )\r
{\r
  return *((BOOLEAN *) ExGetWorker (Guid, ExTokenNumber, sizeof (BOOLEAN)));\r
}\r
\r
\r
\r
UINTN\r
EFIAPI\r
PeiPcdGetSizeEx (\r
  IN CONST  EFI_GUID        *Guid,\r
  IN UINTN                             ExTokenNumber\r
  )\r
{\r
  return PeiPcdGetSize (GetExPcdTokenNumber (Guid, ExTokenNumber));\r
}\r
\r
\r
\r
EFI_STATUS\r
EFIAPI\r
PeiPcdSet8 (\r
  IN UINTN                        TokenNumber,\r
  IN UINT8                        Value\r
  )\r
{\r
  return SetValueWorker (TokenNumber, &Value, sizeof (Value));\r
}\r
\r
\r
\r
EFI_STATUS\r
EFIAPI\r
PeiPcdSet16 (\r
  IN UINTN                          TokenNumber,\r
  IN UINT16                         Value\r
  )\r
{\r
  return SetValueWorker (TokenNumber, &Value, sizeof (Value));\r
}\r
\r
\r
\r
EFI_STATUS\r
EFIAPI\r
PeiPcdSet32 (\r
  IN UINTN                          TokenNumber,\r
  IN UINT32                         Value\r
  )\r
{\r
  return SetValueWorker (TokenNumber, &Value, sizeof (Value));\r
}\r
\r
\r
\r
EFI_STATUS\r
EFIAPI\r
PeiPcdSet64 (\r
  IN UINTN                          TokenNumber,\r
  IN UINT64                         Value\r
  )\r
{\r
  return SetValueWorker (TokenNumber, &Value, sizeof (Value));\r
}\r
\r
\r
EFI_STATUS\r
EFIAPI\r
PeiPcdSetPtr (\r
  IN      UINTN                         TokenNumber,\r
  IN OUT  UINTN                         *SizeOfBuffer,\r
  IN      VOID                          *Buffer\r
  )\r
{\r
  return SetWorker (TokenNumber, Buffer, SizeOfBuffer, TRUE);\r
}\r
\r
\r
\r
EFI_STATUS\r
EFIAPI\r
PeiPcdSetBool (\r
  IN UINTN                          TokenNumber,\r
  IN BOOLEAN                        Value\r
  )\r
{\r
  return SetValueWorker (TokenNumber, &Value, sizeof (Value));\r
}\r
\r
\r
\r
EFI_STATUS\r
EFIAPI\r
PeiPcdSet8Ex (\r
  IN CONST EFI_GUID         *Guid,\r
  IN UINTN                  ExTokenNumber,\r
  IN UINT8                  Value\r
  )\r
{\r
  return ExSetValueWorker (ExTokenNumber, Guid, &Value, sizeof (Value));\r
}\r
\r
\r
\r
EFI_STATUS\r
EFIAPI\r
PeiPcdSet16Ex (\r
  IN CONST EFI_GUID         *Guid,\r
  IN UINTN                  ExTokenNumber,\r
  IN UINT16                 Value\r
  )\r
{\r
  return ExSetValueWorker (ExTokenNumber, Guid, &Value, sizeof (Value));\r
}\r
\r
\r
\r
EFI_STATUS\r
EFIAPI\r
PeiPcdSet32Ex (\r
  IN CONST EFI_GUID         *Guid,\r
  IN UINTN                  ExTokenNumber,\r
  IN UINT32                 Value\r
  )\r
{\r
  return ExSetValueWorker (ExTokenNumber, Guid, &Value, sizeof (Value));\r
}\r
\r
\r
\r
EFI_STATUS\r
EFIAPI\r
PeiPcdSet64Ex (\r
  IN CONST EFI_GUID         *Guid,\r
  IN UINTN                  ExTokenNumber,\r
  IN UINT64                 Value\r
  )\r
{\r
  return ExSetValueWorker (ExTokenNumber, Guid, &Value, sizeof (Value));\r
}\r
\r
\r
\r
EFI_STATUS\r
EFIAPI\r
PeiPcdSetPtrEx (\r
  IN CONST EFI_GUID         *Guid,\r
  IN UINTN                  ExTokenNumber,\r
  IN UINTN                  *SizeOfBuffer,\r
  IN VOID                   *Value\r
  )\r
{\r
  return ExSetWorker (ExTokenNumber, Guid, Value, SizeOfBuffer, TRUE);\r
}\r
\r
\r
\r
EFI_STATUS\r
EFIAPI\r
PeiPcdSetBoolEx (\r
  IN CONST EFI_GUID       *Guid,\r
  IN UINTN                ExTokenNumber,\r
  IN BOOLEAN              Value\r
  )\r
{\r
  return ExSetValueWorker (ExTokenNumber, Guid, &Value, sizeof (Value));\r
}\r
\r
\r
\r
\r
EFI_STATUS\r
EFIAPI\r
PeiRegisterCallBackOnSet (\r
  IN  CONST EFI_GUID              *Guid, OPTIONAL\r
  IN  UINTN                       ExTokenNumber,\r
  IN  PCD_PPI_CALLBACK            CallBackFunction\r
  )\r
{\r
  ASSERT (CallBackFunction != NULL);\r
  \r
  return PeiRegisterCallBackWorker (ExTokenNumber, Guid, CallBackFunction, TRUE);\r
}\r
\r
\r
\r
EFI_STATUS\r
EFIAPI\r
PcdUnRegisterCallBackOnSet (\r
  IN  CONST EFI_GUID              *Guid, OPTIONAL\r
  IN  UINTN                       ExTokenNumber,\r
  IN  PCD_PPI_CALLBACK            CallBackFunction\r
  )\r
{\r
  ASSERT (CallBackFunction != NULL);\r
  \r
  return PeiRegisterCallBackWorker (ExTokenNumber, Guid, CallBackFunction, FALSE);\r
}\r
\r
\r
\r
EFI_STATUS\r
EFIAPI\r
PeiPcdGetNextToken (\r
  IN CONST EFI_GUID               *Guid, OPTIONAL\r
  IN OUT  UINTN                   *TokenNumber\r
  )\r
{\r
  UINTN               GuidTableIdx;\r
  PEI_PCD_DATABASE    *PeiPcdDb;\r
  EFI_GUID            *MatchGuid;\r
  DYNAMICEX_MAPPING   *ExMapTable;\r
  UINTN               i;\r
  BOOLEAN             Found;\r
    \r
  if (!FeaturePcdGet (PcdPeiPcdDatabaseTraverseEnabled)) {\r
    return EFI_UNSUPPORTED;\r
  }\r
    \r
  if (Guid == NULL) {\r
    if (*TokenNumber > PEI_NEX_TOKEN_NUMBER) {\r
      return EFI_NOT_FOUND;\r
    }\r
    (*TokenNumber)++;\r
    if (*TokenNumber > PEI_NEX_TOKEN_NUMBER) {\r
      *TokenNumber = PCD_INVALID_TOKEN_NUMBER;\r
    }\r
    return EFI_SUCCESS;\r
  } else {\r
    if (PEI_EXMAP_TABLE_EMPTY) {\r
      *TokenNumber = PCD_INVALID_TOKEN_NUMBER;\r
      return EFI_SUCCESS;\r
    }\r
    \r
    //\r
    // Assume PCD Database AutoGen tool is sorting the ExMap based on the following order\r
    // 1) ExGuid\r
    // 2) ExTokenNumber\r
    //\r
    PeiPcdDb = GetPcdDatabase ();\r
    \r
    MatchGuid = ScanGuid (PeiPcdDb->Init.GuidTable, sizeof(PeiPcdDb->Init.GuidTable), Guid);\r
\r
    if (MatchGuid == NULL) {\r
      *TokenNumber = PCD_INVALID_TOKEN_NUMBER;\r
      return EFI_NOT_FOUND;\r
    }\r
\r
    GuidTableIdx = MatchGuid - PeiPcdDb->Init.GuidTable;\r
\r
    ExMapTable = PeiPcdDb->Init.ExMapTable;\r
\r
    Found = FALSE;\r
    //\r
    // Locate the GUID in ExMapTable first.\r
    //\r
    for (i = 0; i < PEI_EXMAPPING_TABLE_SIZE; i++) {\r
      if (ExMapTable[i].ExGuidIndex == GuidTableIdx) {\r
        Found = TRUE;\r
        break;\r
      }\r
    }\r
\r
    if (Found) {\r
      if (*TokenNumber == PCD_INVALID_TOKEN_NUMBER) {\r
        *TokenNumber = ExMapTable[i].ExTokenNumber;\r
         return EFI_SUCCESS;\r
      }\r
\r
      for ( ; i < PEI_EXMAPPING_TABLE_SIZE; i++) {\r
        if (ExMapTable[i].ExTokenNumber == *TokenNumber) {\r
          i++;\r
          if (i == PEI_EXMAPPING_TABLE_SIZE) {\r
            //\r
            // Exceed the length of ExMap Table\r
            //\r
            *TokenNumber = PCD_INVALID_TOKEN_NUMBER;\r
            return EFI_SUCCESS;\r
          }\r
          if (ExMapTable[i].ExGuidIndex == GuidTableIdx) {\r
            *TokenNumber = ExMapTable[i].ExTokenNumber;\r
            return EFI_SUCCESS;\r
          } else {\r
            *TokenNumber = PCD_INVALID_TOKEN_NUMBER;\r
            return EFI_SUCCESS;\r
          }\r
        }\r
      }\r
      return EFI_NOT_FOUND;\r
    }\r
  }\r
\r
  return EFI_NOT_FOUND;\r
}\r
\r
\r
\r
EFI_STATUS\r
EFIAPI\r
PeiPcdGetNextTokenSpace (\r
  IN OUT CONST EFI_GUID               **Guid\r
  )\r
{\r
  UINTN               GuidTableIdx;\r
  EFI_GUID            *MatchGuid;\r
  PEI_PCD_DATABASE    *PeiPcdDb;\r
  DYNAMICEX_MAPPING   *ExMapTable;\r
  UINTN               i;\r
  BOOLEAN             Found;\r
\r
  if (!FeaturePcdGet (PcdPeiPcdDatabaseTraverseEnabled)) {\r
    return EFI_UNSUPPORTED;\r
  }\r
\r
  ASSERT (Guid != NULL);\r
\r
  if (PEI_EXMAP_TABLE_EMPTY) {\r
    if (*Guid != NULL) {\r
      return EFI_NOT_FOUND;\r
    } else {\r
      return EFI_SUCCESS;\r
    }\r
  }\r
\r
  //\r
  // Assume PCD Database AutoGen tool is sorting the ExMap based on the following order\r
  // 1) ExGuid\r
  // 2) ExTokenNumber\r
  //\r
  PeiPcdDb = GetPcdDatabase ();\r
\r
  ExMapTable = PeiPcdDb->Init.ExMapTable;\r
\r
  if (*Guid == NULL) {\r
    //\r
    // return the first Token Space Guid.\r
    //\r
    *Guid = &PeiPcdDb->Init.GuidTable[ExMapTable[0].ExGuidIndex];\r
    return EFI_SUCCESS;\r
  }\r
\r
  MatchGuid = ScanGuid (PeiPcdDb->Init.GuidTable, sizeof(PeiPcdDb->Init.GuidTable), *Guid);\r
\r
  if (MatchGuid == NULL) {\r
    return EFI_NOT_FOUND;\r
  }\r
  \r
  GuidTableIdx = MatchGuid - PeiPcdDb->Init.GuidTable;\r
\r
  Found = FALSE;\r
  for (i = 0; i < PEI_EXMAPPING_TABLE_SIZE; i++) {\r
    if (ExMapTable[i].ExGuidIndex == GuidTableIdx) {\r
      Found = TRUE;\r
      break;\r
    }\r
  }\r
\r
  if (Found) {\r
    i++;\r
    for ( ; i < PEI_EXMAPPING_TABLE_SIZE; i++ ) {\r
      if (ExMapTable[i].ExGuidIndex != GuidTableIdx ) {\r
        *Guid = &PeiPcdDb->Init.GuidTable[ExMapTable[i].ExGuidIndex];\r
        return EFI_SUCCESS;\r
      }\r
    }\r
    *Guid = NULL;\r
    return EFI_SUCCESS;\r
  }\r
\r
  return EFI_NOT_FOUND;\r
\r
}\r
\r