69eb9ad4a1
Implements SmmCpuSyncLib Library instance. The instance refers the existing SMM CPU driver (PiSmmCpuDxeSmm) sync implementation and behavior: 1.Abstract Counter and Run semaphores into SmmCpuSyncCtx. 2.Abstract CPU arrival count operation to SmmCpuSyncGetArrivedCpuCount(), SmmCpuSyncCheckInCpu(), SmmCpuSyncCheckOutCpu(), SmmCpuSyncLockDoor(). Implementation is aligned with existing SMM CPU driver. 3. Abstract SMM CPU Sync flow to: BSP: SmmCpuSyncReleaseOneAp --> AP: SmmCpuSyncWaitForBsp BSP: SmmCpuSyncWaitForAPs <-- AP: SmmCpuSyncReleaseBsp Semaphores release & wait during sync flow is same as existing SMM CPU driver. 4.Same operation to Counter and Run semaphores by leverage the atomic compare exchange. Cc: Laszlo Ersek <lersek@redhat.com> Cc: Eric Dong <eric.dong@intel.com> Cc: Ray Ni <ray.ni@intel.com> Cc: Zeng Star <star.zeng@intel.com> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Rahul Kumar <rahul1.kumar@intel.com> Signed-off-by: Jiaxin Wu <jiaxin.wu@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com>
35 lines
764 B
INI
35 lines
764 B
INI
## @file
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# SMM CPU Synchronization lib.
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#
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# This is SMM CPU Synchronization lib used for SMM CPU sync operations.
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#
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# Copyright (c) 2023, 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 = SmmCpuSyncLib
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FILE_GUID = 1ca1bc1a-16a4-46ef-956a-ca500fd3381f
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MODULE_TYPE = DXE_SMM_DRIVER
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LIBRARY_CLASS = SmmCpuSyncLib|DXE_SMM_DRIVER
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[Sources]
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SmmCpuSyncLib.c
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[Packages]
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MdePkg/MdePkg.dec
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UefiCpuPkg/UefiCpuPkg.dec
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[LibraryClasses]
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BaseLib
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DebugLib
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MemoryAllocationLib
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SafeIntLib
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SynchronizationLib
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[Pcd]
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[Protocols]
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