fdb5bc72b6
Describe PCD service can’t be used at Runtime phase. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Liming Gao <liming.gao@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16403 6f19259b-4bc3-4df7-8a09-765794883524
69 lines
2.5 KiB
INI
69 lines
2.5 KiB
INI
## @file
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# Instance of PCD Library using PCD Protocol.
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#
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# There are two PCD protocols as follows:
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# 1) PCD_PROTOCOL
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# It is EDKII implementation which support Dynamic/DynamicEx Pcds.
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# 2) EFI_PCD_PROTOCOL
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# It is defined by PI specification 1.2, Vol 3 which only support dynamicEx
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# type Pcd.
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#
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# For dynamicEx type PCD, it is compatible between PCD_PROTOCOL and EFI_PCD_PROTOCOL.
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#
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# This library instance uses the PCD_PROTOCOL to handle dynamic PCD request and use
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# EFI_PCD_PROTOCOL to handle dynamicEx type PCD.
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#
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# Note: A driver of type DXE_RUNTIME_DRIVER and DXE_SMM_DRIVER can only use this DxePcdLib
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# in their initialization without any issues to access Dynamic and DynamicEx PCD. They can't
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# access Dynamic and DynamicEx PCD in the implementation of runtime services and SMI handlers.
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# Because EFI_PCD_PROTOCOL is DXE protocol that is not aviable in OS runtime phase.
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#
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# Copyright (c) 2007 - 2014, Intel Corporation. All rights reserved.<BR>
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#
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# This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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# http://opensource.org/licenses/bsd-license.php.
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# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#
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#
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##
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[Defines]
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INF_VERSION = 0x00010005
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BASE_NAME = DxePcdLib
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MODULE_UNI_FILE = DxePcdLib.uni
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FILE_GUID = af97eb89-4cc6-45f8-a514-ca025b346480
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MODULE_TYPE = DXE_DRIVER
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VERSION_STRING = 1.0
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LIBRARY_CLASS = PcdLib|DXE_CORE DXE_DRIVER DXE_RUNTIME_DRIVER DXE_SAL_DRIVER DXE_SMM_DRIVER SMM_CORE UEFI_APPLICATION UEFI_DRIVER
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#
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# VALID_ARCHITECTURES = IA32 X64 IPF EBC
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#
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[Sources]
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DxePcdLib.c
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[Packages]
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MdePkg/MdePkg.dec
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[LibraryClasses]
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BaseMemoryLib
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UefiBootServicesTableLib
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DebugLib
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[Protocols]
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gPcdProtocolGuid ## SOMETIMES_CONSUMES
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gEfiPcdProtocolGuid ## CONSUMES
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gGetPcdInfoProtocolGuid ## SOMETIMES_CONSUMES
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gEfiGetPcdInfoProtocolGuid ## SOMETIMES_CONSUMES
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[Depex.common.DXE_DRIVER, Depex.common.DXE_RUNTIME_DRIVER, Depex.common.DXE_SAL_DRIVER, Depex.common.DXE_SMM_DRIVER]
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gEfiPcdProtocolGuid
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