mirror of
https://github.com/Dasharo/edk2.git
synced 2026-06-13 10:16:24 -07:00
Michał Żygowski
eedcdea610
Modern AMD platforms cannot initialize graphics in 32bit mode (using PEI GOP or VBIOS), because of UMA memory allocation above 4G by default. One would have to force the recovery path so that UMA is allocated below 4G. To allow running AMD x64 GOP, some modifications are needed. Firstly, the GOP still needs VBIOS, so PCI IO must provide it from FFS. Then, the GOP driver must also be included in the FFS, so that DXE dispatcher picks it up and runs it. TEST=Successfully initialize integrated graphics on MSI PRO B850-P WIFI. Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
62 lines
1.6 KiB
INI
62 lines
1.6 KiB
INI
## @file
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# This driver produces gEfiPciPlatform protocol to load PCI Option ROMs
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#
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# Copyright (c) 2020, 9elements Agency GmbH
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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 = PciPlatformDxe
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FILE_GUID = 86D58F7B-6E7C-401F-BDD4-E32E6D582AAD
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MODULE_TYPE = UEFI_DRIVER
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VERSION_STRING = 1.0
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ENTRY_POINT = InstallPciPlatformProtocol
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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
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#
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[Sources.common]
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PciPlatformDxe.h
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PciPlatformDxe.c
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[Packages]
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DasharoModulePkg/DasharoModulePkg.dec
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MdePkg/MdePkg.dec
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MdeModulePkg/MdeModulePkg.dec
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DasharoPayloadPkg/DasharoPayloadPkg.dec
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[LibraryClasses]
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UefiDriverEntryPoint
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UefiBootServicesTableLib
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UefiRuntimeServicesTableLib
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DxeServicesLib
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DxeServicesTableLib
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DebugLib
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MemoryAllocationLib
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BaseMemoryLib
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DevicePathLib
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UefiLib
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HobLib
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PcdLib
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[Guids]
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gDasharoSystemFeaturesGuid
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[Protocols]
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gEfiPciPlatformProtocolGuid ## PRODUCES
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gEfiPciIoProtocolGuid ## COMSUMES
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[Pcd]
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gDasharoPayloadPkgTokenSpaceGuid.PcdLoadOptionRoms
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gEfiMdePkgTokenSpaceGuid.PcdFastBootFeatureEnabled
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gDasharoPayloadPkgTokenSpaceGuid.AmdVbiosOptionRomVendorId
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gDasharoPayloadPkgTokenSpaceGuid.AmdVbiosOptionRomDeviceId
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gDasharoPayloadPkgTokenSpaceGuid.AmdVbiosOptionRomFileName
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