935343cf16
https://bugzilla.tianocore.org/show_bug.cgi?id=4245 QEMU provides the following three files for guest to install the ACPI tables: - etc/acpi/rsdp - etc/acpi/tables - etc/table-loader "etc/acpi/rsdp" and "etc/acpi/tables" are similar, they are only kept separate because they have different allocation requirements in SeaBIOS. Both of these fw_cfg files contain preformatted ACPI payload. "etc/acpi/rsdp" contains only the RSDP table, while "etc/acpi/tables" contains all other tables, concatenated. To be noted, the tables in these two files have been filled in by qemu, but two kinds of fields are incomplete: pointers to other tables and checksums (which depend on the pointers). "/etc/table-loader" is a linker/loader which provides the commands to "patch" the tables in "etc/acpi/tables" and then install them. "Patch" means to fill the pointers and compute the checksum. From the security perspective these 3 files are the raw data downloaded from qemu. They should be measured and extended before they're consumed. Cc: Erdem Aktas <erdemaktas@google.com> Cc: James Bottomley <jejb@linux.ibm.com> Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: Michael Roth <michael.roth@amd.com> Signed-off-by: Min Xu <min.m.xu@intel.com> Reviewed-by: Jiewen Yao <jiewen.yao@intel.com> Acked-by: Gerd Hoffmann <kraxel@redhat.com>
69 lines
1.8 KiB
INI
69 lines
1.8 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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HobLib
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TpmMeasurementLib
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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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gUefiOvmfPkgTdxAcpiHobGuid
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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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gEfiMdePkgTokenSpaceGuid.PcdConfidentialComputingGuestAttr
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[Depex]
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gEfiAcpiTableProtocolGuid
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