9fdc70af6b
RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429 In TDX the guest firmware is designed to publish a multiprocessor-wakeup structure to let the guest-bootstrap processor wake up guest-application processors with a mailbox. The mailbox is memory that the guest firmware can reserve so each guest virtual processor can have the guest OS send a message to them. The address of the mailbox is recorded in the MADT table. See [ACPI]. To maintain the simplicity of the AcpiPlatformDxe, the MADT ACPI table will be altered in another driver (TdxDxe) by installing a protocol to notify that the ACPI table provided by Qemu is ready. Then in TdxDxe a notification functioin will be called to alter the MADT table to recorded the mailbox address. The protocol is gQemuAcpiTableNotifyProtocolGuid. Cc: Ard Biesheuvel <ardb+tianocore@kernel.org> Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Brijesh Singh <brijesh.singh@amd.com> Cc: Erdem Aktas <erdemaktas@google.com> Cc: James Bottomley <jejb@linux.ibm.com> Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Jiewen Yao <jiewen.yao@intel.com> Signed-off-by: Min Xu <min.m.xu@intel.com>
65 lines
1.6 KiB
INI
65 lines
1.6 KiB
INI
## @file
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# OVMF ACPI Platform Driver
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#
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# Copyright (c) 2008 - 2014, Intel Corporation. All rights reserved.<BR>
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# SPDX-License-Identifier: BSD-2-Clause-Patent
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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 = QemuFwCfgAcpiPlatform
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FILE_GUID = 17985e6f-e778-4d94-aefa-c5dd2b77e186
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MODULE_TYPE = DXE_DRIVER
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VERSION_STRING = 1.0
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ENTRY_POINT = AcpiPlatformEntryPoint
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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 ARM AARCH64
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#
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[Sources]
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AcpiPlatform.c
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AcpiPlatform.h
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BootScript.c
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CloudHvAcpi.c
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EntryPoint.c
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PciDecoding.c
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QemuFwCfgAcpi.c
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[Packages]
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MdeModulePkg/MdeModulePkg.dec
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MdePkg/MdePkg.dec
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OvmfPkg/OvmfPkg.dec
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[LibraryClasses]
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BaseLib
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BaseMemoryLib
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DebugLib
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MemoryAllocationLib
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OrderedCollectionLib
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PcdLib
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QemuFwCfgLib
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QemuFwCfgS3Lib
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UefiBootServicesTableLib
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UefiDriverEntryPoint
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[Protocols]
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gEfiAcpiTableProtocolGuid # PROTOCOL ALWAYS_CONSUMED
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gEfiPciIoProtocolGuid # PROTOCOL SOMETIMES_CONSUMED
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gQemuAcpiTableNotifyProtocolGuid # PROTOCOL PRODUCES
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[Guids]
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gRootBridgesConnectedEventGroupGuid
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[Pcd]
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gEfiMdeModulePkgTokenSpaceGuid.PcdPciDisableBusEnumeration
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gUefiOvmfPkgTokenSpaceGuid.PcdOvmfHostBridgePciDevId
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gUefiOvmfPkgTokenSpaceGuid.PcdXenPvhStartOfDayStructPtr
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gUefiOvmfPkgTokenSpaceGuid.PcdXenPvhStartOfDayStructPtrSize
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[Depex]
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gEfiAcpiTableProtocolGuid
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