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The PCD token, PcdPciExpressBaseAddress is referred in the constructor. If the token is defined as PcdsDynamic type, the PCD function that gets the token value uses the gBS service to locate PCD protocol internally. In this case, it is possible for the function to be called before initializing gBS variable, then cause a system hang due to gBS variable. Need to ensure the availability of gBS variable. Signed-off-by: Phil Noh <Phil.Noh@amd.com>
40 lines
1014 B
INI
40 lines
1014 B
INI
## @file
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# Instance of PCI Express Library using the 256 MB PCI Express MMIO window.
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#
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# PCI Express Library that uses the 256 MB PCI Express MMIO window to perform
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# PCI Configuration cycles. Layers on top of an I/O Library instance.
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#
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# Copyright (c) 2007 - 2014, Intel Corporation. All rights reserved.
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# Portions copyright (c) 2016, American Megatrends, Inc. All rights reserved.
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#
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# SPDX-License-Identifier: BSD-2-Clause-Patent
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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 = SmmPciExpressLib
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FILE_GUID = 00D24382-8231-4B18-A4F0-2D94D8FE2E81
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MODULE_TYPE = DXE_SMM_DRIVER
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VERSION_STRING = 1.0
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LIBRARY_CLASS = PciExpressLib|DXE_SMM_DRIVER SMM_CORE
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CONSTRUCTOR = SmmPciExpressLibConstructor
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[Sources]
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PciExpressLib.c
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[Packages]
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MdePkg/MdePkg.dec
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[LibraryClasses]
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BaseLib
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PcdLib
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DebugLib
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IoLib
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UefiBootServicesTableLib
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[Pcd]
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gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseAddress ## CONSUMES
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gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseSize ## CONSUMES
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