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e07092edca8442db4a941dbeea0cd196c7bf8ec9
system76-edk2/ArmVirtPkg/ArmVirtQemuKernel.dsc
Ard Biesheuvel e07092edca ArmVirtPkg/PrePiUniCoreRelocatable CLANG38: work around build issues 
The self-relocating PrePi module that is used by the ArmVirtQemuKernel
and ArmVirtXen targets runs the linker in PIE mode so that it emits
dynamic relocations into the final image in a way that permits the
module to relocate itself into place before calling into the C code.

When building these targets using the CLANG38 toolchain, we switch
from the BFD to the GOLD linker, which behaves a bit differently when
building PIE executables, and insists on emitting GOT indirected symbol
references throughout, which means a) that we end up with absolute
addresses (which need to be fixed up at load time) for no good reason,
and b) we have to add support for handling GOT entries to GenFw if we
want to convert them into PE/COFF.

So instead, let's emit a shared library. Since the ELF image only serves
as the input to GenFw, this does not lead to any loss of functionality,
although it does require the -Bsymbolic linker option to be added to
ensure that no symbol based dynamic relocations are emitted (which
would, e.g., permit lazy binding for shared libraries). So for all
other toolchains, the linker option changes are a no-op.

Then, we have to convince CLANG38/GOLD that there is no need to refer
to symbols via a GOT entry. This is done by forcing hidden visibility
for all symbols in all components that make up the PrePi SEC module:
this informs the linker that a symbol is never exported or preempted,
making it safe to refer to it directly from anywhere in the code,
rather than indirectly via a GOT entry.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Laszlo Ersek <lersek@redhat.com>
2018-12-11 17:49:23 +01:00

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#
# Copyright (c) 2011-2015, ARM Limited. All rights reserved.
# Copyright (c) 2014, 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.
#
#
################################################################################
#
# Defines Section - statements that will be processed to create a Makefile.
#
################################################################################
[Defines]
PLATFORM_NAME = ArmVirtQemu
PLATFORM_GUID = 37d7e986-f7e9-45c2-8067-e371421a626c
PLATFORM_VERSION = 0.1
DSC_SPECIFICATION = 0x00010005
OUTPUT_DIRECTORY = Build/ArmVirtQemuKernel-$(ARCH)
SUPPORTED_ARCHITECTURES = AARCH64|ARM
BUILD_TARGETS = DEBUG|RELEASE|NOOPT
SKUID_IDENTIFIER = DEFAULT
FLASH_DEFINITION = ArmVirtPkg/ArmVirtQemuKernel.fdf
#
# Defines for default states. These can be changed on the command line.
# -D FLAG=VALUE
#
DEFINE SECURE_BOOT_ENABLE = FALSE
DEFINE NETWORK_IP6_ENABLE = FALSE
DEFINE HTTP_BOOT_ENABLE = FALSE
!include ArmVirtPkg/ArmVirt.dsc.inc
[LibraryClasses.common]
ArmLib|ArmPkg/Library/ArmLib/ArmBaseLib.inf
ArmMmuLib|ArmPkg/Library/ArmMmuLib/ArmMmuBaseLib.inf
# Virtio Support
VirtioLib|OvmfPkg/Library/VirtioLib/VirtioLib.inf
VirtioMmioDeviceLib|OvmfPkg/Library/VirtioMmioDeviceLib/VirtioMmioDeviceLib.inf
QemuFwCfgLib|ArmVirtPkg/Library/QemuFwCfgLib/QemuFwCfgLib.inf
QemuFwCfgS3Lib|OvmfPkg/Library/QemuFwCfgS3Lib/BaseQemuFwCfgS3LibNull.inf
ArmVirtMemInfoLib|ArmVirtPkg/Library/QemuVirtMemInfoLib/QemuVirtMemInfoLib.inf
TimerLib|ArmPkg/Library/ArmArchTimerLib/ArmArchTimerLib.inf
NorFlashPlatformLib|ArmVirtPkg/Library/NorFlashQemuLib/NorFlashQemuLib.inf
CapsuleLib|MdeModulePkg/Library/DxeCapsuleLibNull/DxeCapsuleLibNull.inf
BootLogoLib|MdeModulePkg/Library/BootLogoLib/BootLogoLib.inf
PlatformBootManagerLib|ArmVirtPkg/Library/PlatformBootManagerLib/PlatformBootManagerLib.inf
CustomizedDisplayLib|MdeModulePkg/Library/CustomizedDisplayLib/CustomizedDisplayLib.inf
FrameBufferBltLib|MdeModulePkg/Library/FrameBufferBltLib/FrameBufferBltLib.inf
QemuBootOrderLib|OvmfPkg/Library/QemuBootOrderLib/QemuBootOrderLib.inf
FileExplorerLib|MdeModulePkg/Library/FileExplorerLib/FileExplorerLib.inf
PciPcdProducerLib|ArmVirtPkg/Library/FdtPciPcdProducerLib/FdtPciPcdProducerLib.inf
PciSegmentLib|MdePkg/Library/BasePciSegmentLibPci/BasePciSegmentLibPci.inf
PciHostBridgeLib|ArmVirtPkg/Library/FdtPciHostBridgeLib/FdtPciHostBridgeLib.inf
[LibraryClasses.common.UEFI_DRIVER]
UefiScsiLib|MdePkg/Library/UefiScsiLib/UefiScsiLib.inf
[BuildOptions.common.EDKII.SEC, BuildOptions.common.EDKII.BASE]
# Avoid MOVT/MOVW instruction pairs in code that may end up in the PIE
# executable we build for the relocatable PrePi. They are not runtime
# relocatable in ELF.
*_CLANG35_ARM_CC_FLAGS = -mno-movt
#
# CLANG38 with LTO support enabled uses the GNU GOLD linker, which insists
# on emitting GOT based symbol references when running in shared mode, unless
# we override visibility to 'hidden' in all modules that make up the PrePi
# build.
#
GCC:*_CLANG38_*_CC_FLAGS = -include $(WORKSPACE)/ArmVirtPkg/Include/Platform/Hidden.h
################################################################################
#
# Pcd Section - list of all EDK II PCD Entries defined by this Platform
#
################################################################################
[PcdsFeatureFlag.common]
gUefiOvmfPkgTokenSpaceGuid.PcdQemuBootOrderPciTranslation|TRUE
gUefiOvmfPkgTokenSpaceGuid.PcdQemuBootOrderMmioTranslation|TRUE
## If TRUE, Graphics Output Protocol will be installed on virtual handle created by ConsplitterDxe.
# It could be set FALSE to save size.
gEfiMdeModulePkgTokenSpaceGuid.PcdConOutGopSupport|TRUE
gEfiMdeModulePkgTokenSpaceGuid.PcdConOutUgaSupport|FALSE
[PcdsFixedAtBuild.common]
gArmPlatformTokenSpaceGuid.PcdCoreCount|1
!if $(ARCH) == AARCH64
gArmTokenSpaceGuid.PcdVFPEnabled|1
!endif
gArmPlatformTokenSpaceGuid.PcdCPUCoresStackBase|0x4007c000
gArmPlatformTokenSpaceGuid.PcdCPUCorePrimaryStackSize|0x4000
gEfiMdeModulePkgTokenSpaceGuid.PcdMaxVariableSize|0x2000
gEfiMdeModulePkgTokenSpaceGuid.PcdMaxAuthVariableSize|0x2800
# Size of the region used by UEFI in permanent memory (Reserved 64MB)
gArmPlatformTokenSpaceGuid.PcdSystemMemoryUefiRegionSize|0x04000000
## Trustzone enable (to make the transition from EL3 to EL2 in ArmPlatformPkg/Sec)
gArmTokenSpaceGuid.PcdTrustzoneSupport|FALSE
#
# ARM PrimeCell
#
## PL011 - Serial Terminal
gEfiMdePkgTokenSpaceGuid.PcdUartDefaultBaudRate|38400
## Default Terminal Type
## 0-PCANSI, 1-VT100, 2-VT00+, 3-UTF8, 4-TTYTERM
!if $(TTY_TERMINAL) == TRUE
gEfiMdePkgTokenSpaceGuid.PcdDefaultTerminalType|4
!else
gEfiMdePkgTokenSpaceGuid.PcdDefaultTerminalType|1
!endif
#
# ARM Virtual Architectural Timer -- fetch frequency from QEMU (TCG) or KVM
#
gArmTokenSpaceGuid.PcdArmArchTimerFreqInHz|0
!if $(HTTP_BOOT_ENABLE) == TRUE
gEfiNetworkPkgTokenSpaceGuid.PcdAllowHttpConnections|TRUE
!endif
gEfiMdeModulePkgTokenSpaceGuid.PcdResetOnMemoryTypeInformationChange|FALSE
gEfiMdeModulePkgTokenSpaceGuid.PcdBootManagerMenuFile|{ 0x21, 0xaa, 0x2c, 0x46, 0x14, 0x76, 0x03, 0x45, 0x83, 0x6e, 0x8a, 0xb6, 0xf4, 0x66, 0x23, 0x31 }
#
# The maximum physical I/O addressability of the processor, set with
# BuildCpuHob().
#
gEmbeddedTokenSpaceGuid.PcdPrePiCpuIoSize|16
[PcdsPatchableInModule.common]
#
# This will be overridden in the code
#
gArmTokenSpaceGuid.PcdSystemMemoryBase|0x0
gArmTokenSpaceGuid.PcdSystemMemorySize|0x0
#
# Define a default initial address for the device tree.
# Ignored if x0 != 0 at entry.
#
gArmVirtTokenSpaceGuid.PcdDeviceTreeInitialBaseAddress|0x40000000
gArmTokenSpaceGuid.PcdFdBaseAddress|0x0
gArmTokenSpaceGuid.PcdFvBaseAddress|0x0
[PcdsDynamicDefault.common]
gEfiMdePkgTokenSpaceGuid.PcdPlatformBootTimeOut|3
## If TRUE, OvmfPkg/AcpiPlatformDxe will not wait for PCI
# enumeration to complete before installing ACPI tables.
gEfiMdeModulePkgTokenSpaceGuid.PcdPciDisableBusEnumeration|TRUE
gArmTokenSpaceGuid.PcdArmArchTimerSecIntrNum|0x0
gArmTokenSpaceGuid.PcdArmArchTimerIntrNum|0x0
gArmTokenSpaceGuid.PcdArmArchTimerVirtIntrNum|0x0
gArmTokenSpaceGuid.PcdArmArchTimerHypIntrNum|0x0
#
# ARM General Interrupt Controller
#
gArmTokenSpaceGuid.PcdGicDistributorBase|0x0
gArmTokenSpaceGuid.PcdGicRedistributorsBase|0x0
gArmTokenSpaceGuid.PcdGicInterruptInterfaceBase|0x0
## PL031 RealTimeClock
gArmPlatformTokenSpaceGuid.PcdPL031RtcBase|0x0
# set PcdPciExpressBaseAddress to MAX_UINT64, which signifies that this
# PCD and PcdPciDisableBusEnumeration above have not been assigned yet
gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseAddress|0xFFFFFFFFFFFFFFFF
gArmTokenSpaceGuid.PcdPciIoTranslation|0x0
#
# Set video resolution for boot options and for text setup.
# PlatformDxe can set the former at runtime.
#
gEfiMdeModulePkgTokenSpaceGuid.PcdVideoHorizontalResolution|800
gEfiMdeModulePkgTokenSpaceGuid.PcdVideoVerticalResolution|600
gEfiMdeModulePkgTokenSpaceGuid.PcdSetupVideoHorizontalResolution|640
gEfiMdeModulePkgTokenSpaceGuid.PcdSetupVideoVerticalResolution|480
#
# SMBIOS entry point version
#
gEfiMdeModulePkgTokenSpaceGuid.PcdSmbiosVersion|0x0300
gEfiMdeModulePkgTokenSpaceGuid.PcdSmbiosDocRev|0x0
gUefiOvmfPkgTokenSpaceGuid.PcdQemuSmbiosValidated|FALSE
################################################################################
#
# Components Section - list of all EDK II Modules needed by this Platform
#
################################################################################
[Components.common]
#
# PEI Phase modules
#
ArmVirtPkg/PrePi/ArmVirtPrePiUniCoreRelocatable.inf {
<LibraryClasses>
ExtractGuidedSectionLib|EmbeddedPkg/Library/PrePiExtractGuidedSectionLib/PrePiExtractGuidedSectionLib.inf
LzmaDecompressLib|MdeModulePkg/Library/LzmaCustomDecompressLib/LzmaCustomDecompressLib.inf
PrePiLib|EmbeddedPkg/Library/PrePiLib/PrePiLib.inf
HobLib|EmbeddedPkg/Library/PrePiHobLib/PrePiHobLib.inf
PrePiHobListPointerLib|ArmPlatformPkg/Library/PrePiHobListPointerLib/PrePiHobListPointerLib.inf
MemoryAllocationLib|EmbeddedPkg/Library/PrePiMemoryAllocationLib/PrePiMemoryAllocationLib.inf
}
#
# DXE
#
MdeModulePkg/Core/Dxe/DxeMain.inf {
<LibraryClasses>
NULL|MdeModulePkg/Library/DxeCrc32GuidedSectionExtractLib/DxeCrc32GuidedSectionExtractLib.inf
DevicePathLib|MdePkg/Library/UefiDevicePathLib/UefiDevicePathLib.inf
}
MdeModulePkg/Universal/PCD/Dxe/Pcd.inf {
<LibraryClasses>
PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
}
#
# Architectural Protocols
#
ArmPkg/Drivers/CpuDxe/CpuDxe.inf
MdeModulePkg/Core/RuntimeDxe/RuntimeDxe.inf
MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf {
<LibraryClasses>
NULL|MdeModulePkg/Library/VarCheckUefiLib/VarCheckUefiLib.inf
NULL|EmbeddedPkg/Library/NvVarStoreFormattedLib/NvVarStoreFormattedLib.inf
# don't use unaligned CopyMem () on the UEFI varstore NOR flash region
BaseMemoryLib|MdePkg/Library/BaseMemoryLib/BaseMemoryLib.inf
}
!if $(SECURE_BOOT_ENABLE) == TRUE
MdeModulePkg/Universal/SecurityStubDxe/SecurityStubDxe.inf {
<LibraryClasses>
NULL|SecurityPkg/Library/DxeImageVerificationLib/DxeImageVerificationLib.inf
}
SecurityPkg/VariableAuthenticated/SecureBootConfigDxe/SecureBootConfigDxe.inf
!else
MdeModulePkg/Universal/SecurityStubDxe/SecurityStubDxe.inf
!endif
MdeModulePkg/Universal/CapsuleRuntimeDxe/CapsuleRuntimeDxe.inf
MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteDxe.inf
MdeModulePkg/Universal/MonotonicCounterRuntimeDxe/MonotonicCounterRuntimeDxe.inf
MdeModulePkg/Universal/ResetSystemRuntimeDxe/ResetSystemRuntimeDxe.inf
EmbeddedPkg/RealTimeClockRuntimeDxe/RealTimeClockRuntimeDxe.inf {
<LibraryClasses>
NULL|ArmVirtPkg/Library/ArmVirtPL031FdtClientLib/ArmVirtPL031FdtClientLib.inf
}
EmbeddedPkg/MetronomeDxe/MetronomeDxe.inf
MdeModulePkg/Universal/Console/ConPlatformDxe/ConPlatformDxe.inf
MdeModulePkg/Universal/Console/ConSplitterDxe/ConSplitterDxe.inf
MdeModulePkg/Universal/Console/GraphicsConsoleDxe/GraphicsConsoleDxe.inf
MdeModulePkg/Universal/Console/TerminalDxe/TerminalDxe.inf
MdeModulePkg/Universal/SerialDxe/SerialDxe.inf
MdeModulePkg/Universal/HiiDatabaseDxe/HiiDatabaseDxe.inf
ArmPkg/Drivers/ArmGic/ArmGicDxe.inf
ArmPkg/Drivers/TimerDxe/TimerDxe.inf {
<LibraryClasses>
NULL|ArmVirtPkg/Library/ArmVirtTimerFdtClientLib/ArmVirtTimerFdtClientLib.inf
}
ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashDxe.inf
MdeModulePkg/Universal/WatchdogTimerDxe/WatchdogTimer.inf
#
# Platform Driver
#
ArmVirtPkg/VirtioFdtDxe/VirtioFdtDxe.inf
ArmVirtPkg/FdtClientDxe/FdtClientDxe.inf
ArmVirtPkg/HighMemDxe/HighMemDxe.inf
OvmfPkg/VirtioBlkDxe/VirtioBlk.inf
OvmfPkg/VirtioScsiDxe/VirtioScsi.inf
OvmfPkg/VirtioNetDxe/VirtioNet.inf
OvmfPkg/VirtioRngDxe/VirtioRng.inf
#
# FAT filesystem + GPT/MBR partitioning + UDF filesystem
#
MdeModulePkg/Universal/Disk/DiskIoDxe/DiskIoDxe.inf
MdeModulePkg/Universal/Disk/PartitionDxe/PartitionDxe.inf
MdeModulePkg/Universal/Disk/UnicodeCollation/EnglishDxe/EnglishDxe.inf
FatPkg/EnhancedFatDxe/Fat.inf
MdeModulePkg/Universal/Disk/UdfDxe/UdfDxe.inf
#
# Bds
#
MdeModulePkg/Universal/DevicePathDxe/DevicePathDxe.inf {
<LibraryClasses>
DevicePathLib|MdePkg/Library/UefiDevicePathLib/UefiDevicePathLib.inf
PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
}
MdeModulePkg/Universal/DisplayEngineDxe/DisplayEngineDxe.inf
MdeModulePkg/Universal/SetupBrowserDxe/SetupBrowserDxe.inf
MdeModulePkg/Universal/DriverHealthManagerDxe/DriverHealthManagerDxe.inf
MdeModulePkg/Universal/BdsDxe/BdsDxe.inf
MdeModulePkg/Logo/LogoDxe.inf
MdeModulePkg/Application/UiApp/UiApp.inf {
<LibraryClasses>
NULL|MdeModulePkg/Library/DeviceManagerUiLib/DeviceManagerUiLib.inf
NULL|MdeModulePkg/Library/BootManagerUiLib/BootManagerUiLib.inf
NULL|MdeModulePkg/Library/BootMaintenanceManagerUiLib/BootMaintenanceManagerUiLib.inf
}
#
# Networking stack
#
MdeModulePkg/Universal/Network/DpcDxe/DpcDxe.inf
MdeModulePkg/Universal/Network/ArpDxe/ArpDxe.inf
MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Dxe.inf
MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Dxe.inf
MdeModulePkg/Universal/Network/MnpDxe/MnpDxe.inf
MdeModulePkg/Universal/Network/VlanConfigDxe/VlanConfigDxe.inf
MdeModulePkg/Universal/Network/Mtftp4Dxe/Mtftp4Dxe.inf
MdeModulePkg/Universal/Network/Udp4Dxe/Udp4Dxe.inf
!if $(NETWORK_IP6_ENABLE) == TRUE
NetworkPkg/Ip6Dxe/Ip6Dxe.inf
NetworkPkg/TcpDxe/TcpDxe.inf
NetworkPkg/Udp6Dxe/Udp6Dxe.inf
NetworkPkg/Dhcp6Dxe/Dhcp6Dxe.inf
NetworkPkg/Mtftp6Dxe/Mtftp6Dxe.inf
NetworkPkg/UefiPxeBcDxe/UefiPxeBcDxe.inf
NetworkPkg/IScsiDxe/IScsiDxe.inf
!else
MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Dxe.inf
MdeModulePkg/Universal/Network/UefiPxeBcDxe/UefiPxeBcDxe.inf
MdeModulePkg/Universal/Network/IScsiDxe/IScsiDxe.inf
!endif
!if $(HTTP_BOOT_ENABLE) == TRUE
NetworkPkg/DnsDxe/DnsDxe.inf
NetworkPkg/HttpUtilitiesDxe/HttpUtilitiesDxe.inf
NetworkPkg/HttpDxe/HttpDxe.inf
NetworkPkg/HttpBootDxe/HttpBootDxe.inf
!endif
#
# SCSI Bus and Disk Driver
#
MdeModulePkg/Bus/Scsi/ScsiBusDxe/ScsiBusDxe.inf
MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDiskDxe.inf
#
# SMBIOS Support
#
MdeModulePkg/Universal/SmbiosDxe/SmbiosDxe.inf {
<LibraryClasses>
NULL|OvmfPkg/Library/SmbiosVersionLib/DetectSmbiosVersionLib.inf
}
OvmfPkg/SmbiosPlatformDxe/SmbiosPlatformDxe.inf
#
# PCI support
#
ArmPkg/Drivers/ArmPciCpuIo2Dxe/ArmPciCpuIo2Dxe.inf {
<LibraryClasses>
NULL|ArmVirtPkg/Library/FdtPciPcdProducerLib/FdtPciPcdProducerLib.inf
}
MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridgeDxe.inf
MdeModulePkg/Bus/Pci/PciBusDxe/PciBusDxe.inf {
<LibraryClasses>
NULL|ArmVirtPkg/Library/FdtPciPcdProducerLib/FdtPciPcdProducerLib.inf
}
OvmfPkg/VirtioPciDeviceDxe/VirtioPciDeviceDxe.inf
OvmfPkg/Virtio10Dxe/Virtio10.inf
#
# Video support
#
OvmfPkg/QemuRamfbDxe/QemuRamfbDxe.inf
OvmfPkg/VirtioGpuDxe/VirtioGpu.inf
OvmfPkg/PlatformDxe/Platform.inf
#
# USB Support
#
MdeModulePkg/Bus/Pci/UhciDxe/UhciDxe.inf
MdeModulePkg/Bus/Pci/EhciDxe/EhciDxe.inf
MdeModulePkg/Bus/Pci/XhciDxe/XhciDxe.inf
MdeModulePkg/Bus/Usb/UsbBusDxe/UsbBusDxe.inf
MdeModulePkg/Bus/Usb/UsbKbDxe/UsbKbDxe.inf
MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassStorageDxe.inf
#
# ACPI Support
#
ArmVirtPkg/PlatformHasAcpiDtDxe/PlatformHasAcpiDtDxe.inf
[Components.AARCH64]
MdeModulePkg/Universal/Acpi/BootGraphicsResourceTableDxe/BootGraphicsResourceTableDxe.inf
OvmfPkg/AcpiPlatformDxe/QemuFwCfgAcpiPlatformDxe.inf {
<LibraryClasses>
NULL|ArmVirtPkg/Library/FdtPciPcdProducerLib/FdtPciPcdProducerLib.inf
}
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