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04c36d5a1b
This patch refines the SmmAccess implementation: 1. SmramMap will be retrieved from the gEfiSmmSmramMemoryGuid instead of original from the TSEG Memory Base register. 2. Remove the gEfiAcpiVariableGuid creation, thus the DESCRIPTOR_INDEX definition can be also cleaned. 3. The gEfiAcpiVariableGuid HOB is moved to the OvmfPkg/Library/PlatformInitLib/PlatformInitLib.inf. Cc: Ard Biesheuvel <ardb+tianocore@kernel.org> Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Ray Ni <ray.ni@intel.com> Signed-off-by: Jiaxin Wu <jiaxin.wu@intel.com> Tested-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Jiewen Yao <Jiewen.yao@intel.com>
64 lines
1.4 KiB
INI
64 lines
1.4 KiB
INI
## @file
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# A PEIM with the following responsibilities:
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#
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# - provide SMRAM access by producing PEI_SMM_ACCESS_PPI,
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# - verify & configure the Q35 TSEG in the entry point.
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#
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# Copyright (C) 2013, 2015, Red Hat, Inc.
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# Copyright (c) 2024 Intel Corporation.
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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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[Defines]
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INF_VERSION = 0x00010005
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BASE_NAME = SmmAccessPei
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FILE_GUID = 6C0E75B4-B0B9-44D1-8210-3377D7B4E066
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MODULE_TYPE = PEIM
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VERSION_STRING = 1.0
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ENTRY_POINT = SmmAccessPeiEntryPoint
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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]
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SmmAccessPei.c
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SmramInternal.c
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SmramInternal.h
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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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HobLib
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IoLib
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PcdLib
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PciLib
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PeiServicesLib
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PeimEntryPoint
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[FeaturePcd]
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gUefiOvmfPkgTokenSpaceGuid.PcdSmmSmramRequire
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[Pcd]
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gUefiOvmfPkgTokenSpaceGuid.PcdQ35SmramAtDefaultSmbase
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gUefiOvmfPkgTokenSpaceGuid.PcdQ35TsegMbytes
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[Guids]
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gEfiSmmSmramMemoryGuid # ALWAYS_CONSUMED
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[Ppis]
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gPeiSmmAccessPpiGuid ## PRODUCES
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[Depex]
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gEfiPeiMemoryDiscoveredPpiGuid
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