In DxeMpInitLib, register one period event callback function CheckAPsStatus() used to check AP Status. v3: 1. Use CamelCase for mCheckAllAPsEvent, mStopCheckAllApsStatus and

In PeiMpInitLib, register End of PEI callback function CpuMpEndOfPeiCallback(). Cc: Feng Tian <feng.tian@...> Cc: Giri P Mudusuru <giri.p.mudusuru@...> Cc: Laszlo Ersek

In PeiMpInitLib, save CPU MP Data pointer into one local Guided HOB. In DxeMpInitLib, save CPU MP Data pointer into one global variable. Add helper functions GetCpuMpData()/SaveCpuMpData(). Cc: Feng

v4: 1. ProcessorSignature is updated to CPU_MICROCODE_PROCESSOR_SIGNATURE instead of UINT32. Cc: Feng Tian <feng.tian@...> Cc: Giri P Mudusuru <giri.p.mudusuru@...> Cc: Laszlo

Add CPU_VOLATILE_REGISTERS definitions for CRx and DRx required to be restored after APs received INIT IPI. Add worker functions SaveVolatileRegisters()/RestoreVolatileRegisters() used

Initialize CPU_AP_DATA for CPU APs and add GetApState()/SetApState() helper functions to get/set AP state. Cc: Feng Tian <feng.tian@...> Cc: Giri P Mudusuru <giri.p.mudusuru@...> Cc:

Cc: Feng Tian <feng.tian@...> Cc: Giri P Mudusuru <giri.p.mudusuru@...> Cc: Laszlo Ersek <lersek@...> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jeff Fan

Firstly, get ApLoopMode from PcdCpuApLoopMode. If MonitorMwait feature is not supported, update ApLoopMode to ApHltLoop. If MonitorMwait feature is supported, get MointorFilter size by

In MpInitLibInitialize(), invoke AsmGetAddress() to get get assembly functions' entry addresses and the sizes from returned MP_ASSEMBLY_ADDRESS_MAP structure. v4: 1. Add AsmRelocateApLoop

AsmRelocateApLoop() is used to place APs into MWAIT-loop if MonitorMwait feature is supported before hand-off to OS, or place APs into HLT-loop if MonitorMwait feature is not supported. If the

EnableExecuteDisable in MP_CPU_EXCHANGE_INFO is used to tell AP reset vector if enable execute disable feature on APs. This feature should be enabled before CR3 is written. Cc: Feng Tian

1. Rename NumApsExecutingLoction to NumApsExecutingLocation 2. Update some comments in NASM files. 3. Remove PeiCpuMpData from MP_CPU_EXCHANGE_INFO. Cc: Feng Tian <feng.tian@...> Cc: Giri P

Add assembly code for AP reset vector and the definition of MP_CPU_EXCHANGE_INFO that are used to exchange the data between C code and assembly code when AP wake up. v4: 1. Copy

Add two MP Initialize Library instances PeiMpInitLib.inf and DxeMpInitLib.inf with NULL implementation. One PeiMpInitLib.inf is consumed by PEI MP driver. Another DxeMpInitLib.inf is consumed by DXE

MP Initialize library provides basic functionalities to do APs initialization, to manage MP information and to wakeup APs to execute AP task. It could be consumed by CPU MP PEI or DXE drivers to

Currently, we will allocate StartupVector buffer under 1MB at entry point function. But some modules may allocate some hard code address under 1MB. For example, LegacyBiosDxe driver tries to manage

Add microcode definitions defined in Intel(R) 64 and IA-32 Architectures Software Developer's Manual Volume 3A, Section 9.11. v4: 1. ProcessorSignature type changed to

#define MSR_IA32_APIC_BASE_ADDRESS is duplicated with #define MSR_IA32_APIC_BASE defined in UefiCpuPkg/Include/Register/ArchitecturalMsr.h, so we could remove it and update the modules to use

We add MP Initialize Library defined in UefiCpuPkg/Include/Library/MpInitLib.h. It will provide basic functionalities of MP services and could be consumed by CPU MP PEI and CPU MP DXE to produce CPU

It appears that this file is not actually used. It is only referenced in the [Rule.Common.UEFI_DRIVER.NATIVE_BINARY] rule in PlatformPkg.fdf. A little further research shows that an alternate method