3dfd64305b
There are below 2 differences between AMD & OVMF according
existing implementation:
1.The mode of the CPU check is different between the AMD & OVMF.
OVMF:
CpuSaveState->x86.SMMRevId & 0Xffff
AMD:
LMAValue = (UINT32)AsmReadMsr64 (EFER_ADDRESS) & LMA
2.Existing SmBase configuration is different between the
AMD & OVMF.
OVMF:
if ((CpuSaveState->x86.SMMRevId & 0xFFFF) == 0) {
CpuSaveState->x86.SMBASE = mSmBaseForAllCpus[CpuIndex];
} else {
CpuSaveState->x64.SMBASE = mSmBaseForAllCpus[CpuIndex];
}
AMD:
AmdCpuState->x64.SMBASE = mSmBaseForAllCpus[CpuIndex];
This patch provides the SmmRelocationLib library instance
for OVMF to handle the logic difference, and it won't change
the existing implementation code logic.
Cc: Ray Ni <ray.ni@intel.com>
Cc: Zeng Star <star.zeng@intel.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Rahul Kumar <rahul1.kumar@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>
61 lines
1.5 KiB
INI
61 lines
1.5 KiB
INI
## @file
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# SMM Relocation Lib for each processor.
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#
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# This Lib produces the SMM_BASE_HOB in HOB database which tells
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# the PiSmmCpuDxeSmm driver (runs at a later phase) about the new
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# SMBASE for each processor. PiSmmCpuDxeSmm driver installs the
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# SMI handler at the SMM_BASE_HOB.SmBase[Index]+0x8000 for processor
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# Index.
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#
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# Copyright (c) 2024, 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 = SmmRelocationLib
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FILE_GUID = 51834F51-CCE0-4743-B553-935D0C8A53FF
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MODULE_TYPE = PEIM
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VERSION_STRING = 1.0
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LIBRARY_CLASS = SmmRelocationLib
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[Sources]
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InternalSmmRelocationLib.h
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SmramSaveStateConfig.c
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SmmRelocationLib.c
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[Sources.Ia32]
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Ia32/Semaphore.c
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Ia32/SmmInit.nasm
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[Sources.X64]
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X64/Semaphore.c
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X64/SmmInit.nasm
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[Packages]
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MdePkg/MdePkg.dec
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MdeModulePkg/MdeModulePkg.dec
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UefiCpuPkg/UefiCpuPkg.dec
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[LibraryClasses]
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BaseLib
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BaseMemoryLib
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CpuExceptionHandlerLib
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DebugLib
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HobLib
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LocalApicLib
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MemoryAllocationLib
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PcdLib
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PeiServicesLib
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[Guids]
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gSmmBaseHobGuid ## HOB ALWAYS_PRODUCED
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gEfiSmmSmramMemoryGuid ## CONSUMES
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[Pcd]
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gUefiCpuPkgTokenSpaceGuid.PcdCpuMaxLogicalProcessorNumber
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[FeaturePcd]
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gUefiCpuPkgTokenSpaceGuid.PcdCpuHotPlugSupport ## CONSUMES
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