065ae7d717
The 'universal' PCI bus driver in MdeModulePkg contains a quirk to degrade 64-bit PCI MMIO BARs to 32-bit in the presence of an option ROM on the same PCI controller. This quirk is highly specific to not just the X64 architecture in general, but to the PC platform in particular, given that only X64 platforms that require legacy PC BIOS compatibility require it. However, making the quirk dependent on the presence of the legacy BIOS protocol met with resistance, due to the fact that it introduces a dependency on the IntelFrameworkModulePkg package. So instead, make the quirk configurable, by introducing a feature flag PCD 'PcdPciDegradeResourceForOptionRom' which defaults to TRUE only for X64. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
114 lines
4.0 KiB
INI
114 lines
4.0 KiB
INI
## @file
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# The PCI bus driver will probe all PCI devices and allocate MMIO and IO space for these devices.
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# Please use PCD feature flag PcdPciBusHotplugDeviceSupport to enable hot plug supporting.
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#
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# Copyright (c) 2006 - 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 = PciBusDxe
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MODULE_UNI_FILE = PciBusDxe.uni
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FILE_GUID = 93B80004-9FB3-11d4-9A3A-0090273FC14D
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MODULE_TYPE = UEFI_DRIVER
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VERSION_STRING = 1.0
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ENTRY_POINT = PciBusEntryPoint
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#
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# The following information is for reference only and not required by the build tools.
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#
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# VALID_ARCHITECTURES = IA32 X64 IPF EBC ARM AARCH64
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#
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# DRIVER_BINDING = gPciBusDriverBinding
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# COMPONENT_NAME = gPciBusComponentName
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# COMPONENT_NAME2 = gPciBusComponentName2
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#
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[Sources]
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PciLib.c
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PciIo.c
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PciBus.c
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PciDeviceSupport.c
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ComponentName.c
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ComponentName.h
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PciCommand.c
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PciResourceSupport.c
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PciEnumeratorSupport.c
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PciEnumerator.c
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PciOptionRomSupport.c
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PciDriverOverride.c
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PciPowerManagement.c
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PciPowerManagement.h
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PciDriverOverride.h
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PciRomTable.c
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PciHotPlugSupport.c
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PciLib.h
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PciHotPlugSupport.h
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PciRomTable.h
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PciOptionRomSupport.h
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PciEnumeratorSupport.h
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PciEnumerator.h
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PciResourceSupport.h
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PciDeviceSupport.h
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PciCommand.h
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PciIo.h
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PciBus.h
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[Packages]
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MdePkg/MdePkg.dec
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MdeModulePkg/MdeModulePkg.dec
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[LibraryClasses]
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PcdLib
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DevicePathLib
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UefiBootServicesTableLib
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MemoryAllocationLib
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ReportStatusCodeLib
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BaseMemoryLib
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UefiLib
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BaseLib
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UefiDriverEntryPoint
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DebugLib
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PeCoffLib
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[Protocols]
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gEfiPciHotPlugRequestProtocolGuid ## SOMETIMES_PRODUCES
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gEfiPciIoProtocolGuid ## BY_START
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gEfiDevicePathProtocolGuid ## BY_START
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gEfiBusSpecificDriverOverrideProtocolGuid ## BY_START
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gEfiLoadedImageProtocolGuid ## SOMETIMES_CONSUMES
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gEfiDecompressProtocolGuid ## SOMETIMES_CONSUMES
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gEfiPciHotPlugInitProtocolGuid ## SOMETIMES_CONSUMES
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gEfiPciHostBridgeResourceAllocationProtocolGuid ## TO_START
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gEfiPciPlatformProtocolGuid ## SOMETIMES_CONSUMES
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gEfiPciOverrideProtocolGuid ## SOMETIMES_CONSUMES
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gEfiPciEnumerationCompleteProtocolGuid ## PRODUCES
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gEfiPciRootBridgeIoProtocolGuid ## TO_START
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gEfiIncompatiblePciDeviceSupportProtocolGuid ## SOMETIMES_CONSUMES
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gEfiLoadFile2ProtocolGuid ## SOMETIMES_PRODUCES
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[FeaturePcd]
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gEfiMdeModulePkgTokenSpaceGuid.PcdPciBusHotplugDeviceSupport ## CONSUMES
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gEfiMdeModulePkgTokenSpaceGuid.PcdPciBridgeIoAlignmentProbe ## CONSUMES
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gEfiMdeModulePkgTokenSpaceGuid.PcdUnalignedPciIoEnable ## CONSUMES
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gEfiMdeModulePkgTokenSpaceGuid.PcdPciDegradeResourceForOptionRom ## CONSUMES
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[Pcd]
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gEfiMdeModulePkgTokenSpaceGuid.PcdSrIovSystemPageSize ## SOMETIMES_CONSUMES
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gEfiMdeModulePkgTokenSpaceGuid.PcdSrIovSupport ## CONSUMES
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gEfiMdeModulePkgTokenSpaceGuid.PcdAriSupport ## CONSUMES
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gEfiMdeModulePkgTokenSpaceGuid.PcdMrIovSupport ## CONSUMES
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gEfiMdeModulePkgTokenSpaceGuid.PcdPciDisableBusEnumeration ## SOMETIMES_CONSUMES
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[UserExtensions.TianoCore."ExtraFiles"]
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PciBusDxeExtra.uni
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