90f3922b01
QemuVideoDxe driver will link VBE SHIM into page 0. If NULL pointer detection is enabled, this driver will fail to load. NULL pointer detection bypassing code is added to prevent such problem during boot. Please note that Windows 7 will try to access VBE SHIM during boot if it's installed, and then cause boot failure. This can be fixed by setting BIT7 of PcdNullPointerDetectionPropertyMask to disable NULL pointer detection after EndOfDxe. As far as we know, there's no other OSs has such issue. Cc: Laszlo Ersek <lersek@redhat.com> Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Michael Kinney <michael.d.kinney@intel.com> Cc: Ayellet Wolman <ayellet.wolman@intel.com> Suggested-by: Ayellet Wolman <ayellet.wolman@intel.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Jian J Wang <jian.j.wang@intel.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
81 lines
2.3 KiB
INI
81 lines
2.3 KiB
INI
## @file
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# This driver is a sample implementation of the Graphics Output Protocol for
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# the QEMU (Cirrus Logic 5446) video controller.
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#
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# Copyright (c) 2006 - 2016, 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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#
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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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[Defines]
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INF_VERSION = 0x00010005
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BASE_NAME = QemuVideoDxe
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FILE_GUID = e3752948-b9a1-4770-90c4-df41c38986be
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MODULE_TYPE = UEFI_DRIVER
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VERSION_STRING = 1.0
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ENTRY_POINT = InitializeQemuVideo
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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
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#
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# DRIVER_BINDING = gQemuVideoDriverBinding
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# COMPONENT_NAME = gQemuVideoComponentName
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#
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[Sources.common]
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ComponentName.c
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Driver.c
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DriverSupportedEfiVersion.c
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Gop.c
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Initialize.c
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[Sources.Ia32, Sources.X64]
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VbeShim.c
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UnalignedIoGcc.c | GCC
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UnalignedIoMsc.c | MSFT
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UnalignedIoIcc.c | INTEL
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[Sources.IPF, Sources.EBC]
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UnalignedIoUnsupported.c
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[Packages]
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MdePkg/MdePkg.dec
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MdeModulePkg/MdeModulePkg.dec
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OptionRomPkg/OptionRomPkg.dec
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OvmfPkg/OvmfPkg.dec
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[LibraryClasses]
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BaseMemoryLib
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FrameBufferBltLib
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DebugLib
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DevicePathLib
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MemoryAllocationLib
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PcdLib
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PciLib
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PrintLib
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TimerLib
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UefiBootServicesTableLib
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UefiDriverEntryPoint
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UefiLib
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[Protocols]
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gEfiDriverSupportedEfiVersionProtocolGuid # PROTOCOL ALWAYS_PRODUCED
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gEfiGraphicsOutputProtocolGuid # PROTOCOL BY_START
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gEfiDevicePathProtocolGuid # PROTOCOL BY_START
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gEfiPciIoProtocolGuid # PROTOCOL TO_START
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[Pcd]
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gOptionRomPkgTokenSpaceGuid.PcdDriverSupportedEfiVersion
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gUefiOvmfPkgTokenSpaceGuid.PcdOvmfHostBridgePciDevId
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gEfiMdeModulePkgTokenSpaceGuid.PcdNullPointerDetectionPropertyMask
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