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system76-edk2/ArmVirtPkg/ArmVirtQemuFvMain.fdf.inc
Ard Biesheuvel cefbbb3d08 ArmVirtPkg: remove QemuVideoDxe from ArmVirtQemu and ArmVirtQemuKernel 
One of the reasons for introducing virtio-gpu support to OvmfPkg and
ArmVirtpkg was the fact that under KVM virtualization on ARM, the
legacy VGA cannot be used reliably. This is due to an implementation
detail of QEMU+KVM, which remaps cached host memory into the guest
address space as a framebuffer behind a PCI BAR. Given that the purpose
of a memory mapped framebuffer is its side effects, such BARs should
never be mapped cacheable in the guest, and the mismatched attributes
between host and guest result in a loss of coherency, visible as
corruption in the framebuffer image.

This issue does not occur under TCG emulation, nor did we expect it to
actually bring down the guest under KVM, and so it was deemed harmless
to keep support for the VGA device as well. However, as it turns out,
the fact that the framebuffer BAR is mapped using device semantics by
default may result in unalignment faults when we use the ordinary string
copy routines on the contents. In theory, we could work around this by
remapping the BAR as write combining, but it appears the generic PCI
bus driver does not actually implement this.

So let's remove the QemuVideoDxe driver altogether. This may result
in loss of functionality for use cases that rely on the framebuffer
to be directly addressable (such as EFIFB), but given that this never
worked reliably under KVM in the first place, let's not let that stop
us from dropping support for it.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
2017-08-24 13:15:38 +01:00

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#
# Copyright (c) 2011-2015, ARM Limited. All rights reserved.
# Copyright (c) 2014-2016, Linaro Limited. All rights reserved.
# Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.
#
# This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
# http://opensource.org/licenses/bsd-license.php
#
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#
################################################################################
#
# FV Section
#
# [FV] section is used to define what components or modules are placed within a flash
# device file. This section also defines order the components and modules are positioned
# within the image. The [FV] section consists of define statements, set statements and
# module statements.
#
################################################################################
[FV.FvMain]
FvNameGuid = 64074afe-340a-4be6-94ba-91b5b4d0f71e
BlockSize = 0x40
NumBlocks = 0 # This FV gets compressed so make it just big enough
FvAlignment = 16 # FV alignment and FV attributes setting.
ERASE_POLARITY = 1
MEMORY_MAPPED = TRUE
STICKY_WRITE = TRUE
LOCK_CAP = TRUE
LOCK_STATUS = TRUE
WRITE_DISABLED_CAP = TRUE
WRITE_ENABLED_CAP = TRUE
WRITE_STATUS = TRUE
WRITE_LOCK_CAP = TRUE
WRITE_LOCK_STATUS = TRUE
READ_DISABLED_CAP = TRUE
READ_ENABLED_CAP = TRUE
READ_STATUS = TRUE
READ_LOCK_CAP = TRUE
READ_LOCK_STATUS = TRUE
INF MdeModulePkg/Core/Dxe/DxeMain.inf
INF MdeModulePkg/Universal/PCD/Dxe/Pcd.inf
INF ArmVirtPkg/VirtioFdtDxe/VirtioFdtDxe.inf
INF ArmVirtPkg/FdtClientDxe/FdtClientDxe.inf
INF ArmVirtPkg/HighMemDxe/HighMemDxe.inf
#
# PI DXE Drivers producing Architectural Protocols (EFI Services)
#
INF ArmPkg/Drivers/CpuDxe/CpuDxe.inf
INF MdeModulePkg/Core/RuntimeDxe/RuntimeDxe.inf
INF MdeModulePkg/Universal/SecurityStubDxe/SecurityStubDxe.inf
INF MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleRuntimeDxe.inf
INF MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteDxe.inf
INF MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf
!if $(SECURE_BOOT_ENABLE) == TRUE
INF SecurityPkg/VariableAuthenticated/SecureBootConfigDxe/SecureBootConfigDxe.inf
!endif
INF MdeModulePkg/Universal/MonotonicCounterRuntimeDxe/MonotonicCounterRuntimeDxe.inf
INF MdeModulePkg/Universal/ResetSystemRuntimeDxe/ResetSystemRuntimeDxe.inf
INF EmbeddedPkg/RealTimeClockRuntimeDxe/RealTimeClockRuntimeDxe.inf
INF EmbeddedPkg/MetronomeDxe/MetronomeDxe.inf
INF MdeModulePkg/Universal/HiiDatabaseDxe/HiiDatabaseDxe.inf
#
# Multiple Console IO support
#
INF MdeModulePkg/Universal/Console/ConPlatformDxe/ConPlatformDxe.inf
INF MdeModulePkg/Universal/Console/ConSplitterDxe/ConSplitterDxe.inf
INF MdeModulePkg/Universal/Console/GraphicsConsoleDxe/GraphicsConsoleDxe.inf
INF MdeModulePkg/Universal/Console/TerminalDxe/TerminalDxe.inf
INF MdeModulePkg/Universal/SerialDxe/SerialDxe.inf
INF ArmPkg/Drivers/ArmGic/ArmGicDxe.inf
INF ArmPkg/Drivers/TimerDxe/TimerDxe.inf
INF ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashDxe.inf
INF MdeModulePkg/Universal/WatchdogTimerDxe/WatchdogTimer.inf
#
# FAT filesystem + GPT/MBR partitioning
#
INF MdeModulePkg/Universal/Disk/DiskIoDxe/DiskIoDxe.inf
INF MdeModulePkg/Universal/Disk/PartitionDxe/PartitionDxe.inf
INF FatPkg/EnhancedFatDxe/Fat.inf
INF MdeModulePkg/Universal/Disk/UnicodeCollation/EnglishDxe/EnglishDxe.inf
#
# Platform Driver
#
INF OvmfPkg/VirtioBlkDxe/VirtioBlk.inf
INF OvmfPkg/VirtioNetDxe/VirtioNet.inf
INF OvmfPkg/VirtioScsiDxe/VirtioScsi.inf
INF OvmfPkg/VirtioRngDxe/VirtioRng.inf
#
# UEFI application (Shell Embedded Boot Loader)
#
INF ShellPkg/Application/Shell/Shell.inf
#
# Bds
#
INF MdeModulePkg/Universal/DevicePathDxe/DevicePathDxe.inf
INF MdeModulePkg/Universal/DisplayEngineDxe/DisplayEngineDxe.inf
INF MdeModulePkg/Universal/SetupBrowserDxe/SetupBrowserDxe.inf
INF MdeModulePkg/Universal/DriverHealthManagerDxe/DriverHealthManagerDxe.inf
INF MdeModulePkg/Universal/BdsDxe/BdsDxe.inf
INF MdeModulePkg/Application/UiApp/UiApp.inf
#
# Networking stack
#
INF MdeModulePkg/Universal/Network/DpcDxe/DpcDxe.inf
INF MdeModulePkg/Universal/Network/ArpDxe/ArpDxe.inf
INF MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Dxe.inf
INF MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Dxe.inf
INF MdeModulePkg/Universal/Network/MnpDxe/MnpDxe.inf
INF MdeModulePkg/Universal/Network/VlanConfigDxe/VlanConfigDxe.inf
INF MdeModulePkg/Universal/Network/Mtftp4Dxe/Mtftp4Dxe.inf
INF MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Dxe.inf
INF MdeModulePkg/Universal/Network/Udp4Dxe/Udp4Dxe.inf
INF MdeModulePkg/Universal/Network/UefiPxeBcDxe/UefiPxeBcDxe.inf
INF MdeModulePkg/Universal/Network/IScsiDxe/IScsiDxe.inf
#
# SCSI Bus and Disk Driver
#
INF MdeModulePkg/Bus/Scsi/ScsiBusDxe/ScsiBusDxe.inf
INF MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDiskDxe.inf
#
# SMBIOS Support
#
INF MdeModulePkg/Universal/SmbiosDxe/SmbiosDxe.inf
INF OvmfPkg/SmbiosPlatformDxe/SmbiosPlatformDxe.inf
#
# ACPI Support
#
INF ArmVirtPkg/PlatformHasAcpiDtDxe/PlatformHasAcpiDtDxe.inf
!if $(ARCH) == AARCH64
INF MdeModulePkg/Universal/Acpi/AcpiTableDxe/AcpiTableDxe.inf
INF MdeModulePkg/Universal/Acpi/BootGraphicsResourceTableDxe/BootGraphicsResourceTableDxe.inf
INF OvmfPkg/AcpiPlatformDxe/QemuFwCfgAcpiPlatformDxe.inf
#
# EBC support
#
INF MdeModulePkg/Universal/EbcDxe/EbcDxe.inf
!endif
#
# PCI support
#
INF ArmPkg/Drivers/ArmPciCpuIo2Dxe/ArmPciCpuIo2Dxe.inf
INF MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridgeDxe.inf
INF MdeModulePkg/Bus/Pci/PciBusDxe/PciBusDxe.inf
INF OvmfPkg/VirtioPciDeviceDxe/VirtioPciDeviceDxe.inf
INF OvmfPkg/Virtio10Dxe/Virtio10.inf
#
# Video support
#
INF OvmfPkg/VirtioGpuDxe/VirtioGpu.inf
INF OvmfPkg/PlatformDxe/Platform.inf
#
# USB Support
#
INF MdeModulePkg/Bus/Pci/UhciDxe/UhciDxe.inf
INF MdeModulePkg/Bus/Pci/EhciDxe/EhciDxe.inf
INF MdeModulePkg/Bus/Pci/XhciDxe/XhciDxe.inf
INF MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBusDxe.inf
INF MdeModulePkg/Bus/Usb/UsbKbDxe/UsbKbDxe.inf
#
# TianoCore logo (splash screen)
#
INF MdeModulePkg/Logo/LogoDxe.inf
#
# Ramdisk support
#
INF MdeModulePkg/Universal/Disk/RamDiskDxe/RamDiskDxe.inf
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