/** @file
Common header file for MP Initialize Library.
Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef _MP_LIB_H_
#define _MP_LIB_H_
#include <PiPei.h>
#include <Register/Cpuid.h>
#include <Register/Msr.h>
#include <Register/LocalApic.h>
#include <Register/Microcode.h>
#include <Library/MpInitLib.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/DebugLib.h>
#include <Library/LocalApicLib.h>
#include <Library/CpuLib.h>
#include <Library/UefiCpuLib.h>
#include <Library/TimerLib.h>
#include <Library/SynchronizationLib.h>
#include <Library/MtrrLib.h>
#include <Library/HobLib.h>
#define WAKEUP_AP_SIGNAL SIGNATURE_32 ('S', 'T', 'A', 'P')
#define CPU_INIT_MP_LIB_HOB_GUID \
{ \
0x58eb6a19, 0x3699, 0x4c68, { 0xa8, 0x36, 0xda, 0xcd, 0x8e, 0xdc, 0xad, 0x4a } \
}
//
// The MP data for switch BSP
//
#define CPU_SWITCH_STATE_IDLE 0
#define CPU_SWITCH_STATE_STORED 1
#define CPU_SWITCH_STATE_LOADED 2
//
// CPU exchange information for switch BSP
//
typedef struct {
UINT8 State; // offset 0
UINTN StackPointer; // offset 4 / 8
IA32_DESCRIPTOR Gdtr; // offset 8 / 16
IA32_DESCRIPTOR Idtr; // offset 14 / 26
} CPU_EXCHANGE_ROLE_INFO;
//
// AP loop state when APs are in idle state
// It's value is the same with PcdCpuApLoopMode
//
typedef enum {
ApInHltLoop = 1,
ApInMwaitLoop = 2,
ApInRunLoop = 3
} AP_LOOP_MODE;
//
// AP initialization state during APs wakeup
//
typedef enum {
ApInitConfig = 1,
ApInitReconfig = 2,
ApInitDone = 3
} AP_INIT_STATE;
//
// AP state
//
typedef enum {
CpuStateIdle,
CpuStateReady,
CpuStateBusy,
CpuStateFinished,
CpuStateDisabled
} CPU_STATE;
//
// CPU volatile registers around INIT-SIPI-SIPI
//
typedef struct {
UINTN Cr0;
UINTN Cr3;
UINTN Cr4;
UINTN Dr0;
UINTN Dr1;
UINTN Dr2;
UINTN Dr3;
UINTN Dr6;
UINTN Dr7;
} CPU_VOLATILE_REGISTERS;
//
// AP related data
//
typedef struct {
SPIN_LOCK ApLock;
volatile UINT32 *StartupApSignal;
volatile UINTN ApFunction;
volatile UINTN ApFunctionArgument;
BOOLEAN CpuHealthy;
volatile CPU_STATE State;
CPU_VOLATILE_REGISTERS VolatileRegisters;
BOOLEAN Waiting;
BOOLEAN *Finished;
UINT64 ExpectedTime;
UINT64 CurrentTime;
UINT64 TotalTime;
EFI_EVENT WaitEvent;
} CPU_AP_DATA;
//
// Basic CPU information saved in Guided HOB.
// Because the contents will be shard between PEI and DXE,
// we need to make sure the each fields offset same in different
// architecture.
//
#pragma pack (1)
typedef struct {
UINT32 InitialApicId;
UINT32 ApicId;
UINT32 Health;
UINT64 ApTopOfStack;
} CPU_INFO_IN_HOB;
#pragma pack ()
//
// AP reset code information including code address and size,
// this structure will be shared be C code and assembly code.
// It is natural aligned by design.
//
typedef struct {
UINT8 *RendezvousFunnelAddress;
UINTN ModeEntryOffset;
UINTN RendezvousFunnelSize;
UINT8 *RelocateApLoopFuncAddress;
UINTN RelocateApLoopFuncSize;
} MP_ASSEMBLY_ADDRESS_MAP;
typedef struct _CPU_MP_DATA CPU_MP_DATA;
#pragma pack(1)
//
// MP CPU exchange information for AP reset code
// This structure is required to be packed because fixed field offsets
// into this structure are used in assembly code in this module
//
typedef struct {
UINTN Lock;
UINTN StackStart;
UINTN StackSize;
UINTN CFunction;
IA32_DESCRIPTOR GdtrProfile;
IA32_DESCRIPTOR IdtrProfile;
UINTN BufferStart;
UINTN ModeOffset;
UINTN NumApsExecuting;
UINTN CodeSegment;
UINTN DataSegment;
UINTN EnableExecuteDisable;
UINTN Cr3;
UINTN InitFlag;
CPU_INFO_IN_HOB *CpuInfo;
CPU_MP_DATA *CpuMpData;
} MP_CPU_EXCHANGE_INFO;
#pragma pack()
//
// CPU MP Data save in memory
//
struct _CPU_MP_DATA {
UINT64 CpuInfoInHob;
UINT32 CpuCount;
UINT32 BspNumber;
//
// The above fields data will be passed from PEI to DXE
// Please make sure the fields offset same in the different
// architecture.
//
SPIN_LOCK MpLock;
UINTN Buffer;
UINTN CpuApStackSize;
MP_ASSEMBLY_ADDRESS_MAP AddressMap;
UINTN WakeupBuffer;
UINTN BackupBuffer;
UINTN BackupBufferSize;
BOOLEAN SaveRestoreFlag;
volatile UINT32 StartCount;
volatile UINT32 FinishedCount;
volatile UINT32 RunningCount;
BOOLEAN SingleThread;
EFI_AP_PROCEDURE Procedure;
VOID *ProcArguments;
BOOLEAN *Finished;
UINT64 ExpectedTime;
UINT64 CurrentTime;
UINT64 TotalTime;
EFI_EVENT WaitEvent;
UINTN **FailedCpuList;
AP_INIT_STATE InitFlag;
BOOLEAN X2ApicEnable;
BOOLEAN SwitchBspFlag;
UINTN NewBspNumber;
CPU_EXCHANGE_ROLE_INFO BSPInfo;
CPU_EXCHANGE_ROLE_INFO APInfo;
MTRR_SETTINGS MtrrTable;
UINT8 ApLoopMode;
UINT8 ApTargetCState;
UINT16 PmCodeSegment;
CPU_AP_DATA *CpuData;
volatile MP_CPU_EXCHANGE_INFO *MpCpuExchangeInfo;
UINT32 CurrentTimerCount;
UINTN DivideValue;
UINT8 Vector;
BOOLEAN PeriodicMode;
BOOLEAN TimerInterruptState;
};
extern EFI_GUID mCpuInitMpLibHobGuid;
/**
Assembly code to place AP into safe loop mode.
Place AP into targeted C-State if MONITOR is supported, otherwise
place AP into hlt state.
Place AP in protected mode if the current is long mode. Due to AP maybe
wakeup by some hardware event. It could avoid accessing page table that
may not available during booting to OS.
@param[in] MwaitSupport TRUE indicates MONITOR is supported.
FALSE indicates MONITOR is not supported.
@param[in] ApTargetCState Target C-State value.
@param[in] PmCodeSegment Protected mode code segment value.
**/
typedef
VOID
(EFIAPI * ASM_RELOCATE_AP_LOOP) (
IN BOOLEAN MwaitSupport,
IN UINTN ApTargetCState,
IN UINTN PmCodeSegment,
IN UINTN TopOfApStack,
IN UINTN NumberToFinish
);
/**
Assembly code to get starting address and size of the rendezvous entry for APs.
Information for fixing a jump instruction in the code is also returned.
@param[out] AddressMap Output buffer for address map information.
**/
VOID
EFIAPI
AsmGetAddressMap (
OUT MP_ASSEMBLY_ADDRESS_MAP *AddressMap
);
/**
This function is called by both the BSP and the AP which is to become the BSP to
Exchange execution context including stack between them. After return from this
function, the BSP becomes AP and the AP becomes the BSP.
@param[in] MyInfo Pointer to buffer holding the exchanging information for the executing processor.
@param[in] OthersInfo Pointer to buffer holding the exchanging information for the peer.
**/
VOID
EFIAPI
AsmExchangeRole (
IN CPU_EXCHANGE_ROLE_INFO *MyInfo,
IN CPU_EXCHANGE_ROLE_INFO *OthersInfo
);
/**
Get the pointer to CPU MP Data structure.
@return The pointer to CPU MP Data structure.
**/
CPU_MP_DATA *
GetCpuMpData (
VOID
);
/**
Save the pointer to CPU MP Data structure.
@param[in] CpuMpData The pointer to CPU MP Data structure will be saved.
**/
VOID
SaveCpuMpData (
IN CPU_MP_DATA *CpuMpData
);
/**
Allocate reset vector buffer.
@param[in, out] CpuMpData The pointer to CPU MP Data structure.
**/
VOID
AllocateResetVector (
IN OUT CPU_MP_DATA *CpuMpData
);
/**
Free AP reset vector buffer.
@param[in] CpuMpData The pointer to CPU MP Data structure.
**/
VOID
FreeResetVector (
IN CPU_MP_DATA *CpuMpData
);
/**
This function will be called by BSP to wakeup AP.
@param[in] CpuMpData Pointer to CPU MP Data
@param[in] Broadcast TRUE: Send broadcast IPI to all APs
FALSE: Send IPI to AP by ApicId
@param[in] ProcessorNumber The handle number of specified processor
@param[in] Procedure The function to be invoked by AP
@param[in] ProcedureArgument The argument to be passed into AP function
**/
VOID
WakeUpAP (
IN CPU_MP_DATA *CpuMpData,
IN BOOLEAN Broadcast,
IN UINTN ProcessorNumber,
IN EFI_AP_PROCEDURE Procedure, OPTIONAL
IN VOID *ProcedureArgument OPTIONAL
);
/**
Initialize global data for MP support.
@param[in] CpuMpData The pointer to CPU MP Data structure.
**/
VOID
InitMpGlobalData (
IN CPU_MP_DATA *CpuMpData
);
/**
Worker function to execute a caller provided function on all enabled APs.
@param[in] Procedure A pointer to the function to be run on
enabled APs of the system.
@param[in] SingleThread If TRUE, then all the enabled APs execute
the function specified by Procedure one by
one, in ascending order of processor handle
number. If FALSE, then all the enabled APs
execute the function specified by Procedure
simultaneously.
@param[in] WaitEvent The event created by the caller with CreateEvent()
service.
@param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for
APs to return from Procedure, either for
blocking or non-blocking mode.
@param[in] ProcedureArgument The parameter passed into Procedure for
all APs.
@param[out] FailedCpuList If all APs finish successfully, then its
content is set to NULL. If not all APs
finish before timeout expires, then its
content is set to address of the buffer
holding handle numbers of the failed APs.
@retval EFI_SUCCESS In blocking mode, all APs have finished before
the timeout expired.
@retval EFI_SUCCESS In non-blocking mode, function has been dispatched
to all enabled APs.
@retval others Failed to Startup all APs.
**/
EFI_STATUS
StartupAllAPsWorker (
IN EFI_AP_PROCEDURE Procedure,
IN BOOLEAN SingleThread,
IN EFI_EVENT WaitEvent OPTIONAL,
IN UINTN TimeoutInMicroseconds,
IN VOID *ProcedureArgument OPTIONAL,
OUT UINTN **FailedCpuList OPTIONAL
);
/**
Worker function to let the caller get one enabled AP to execute a caller-provided
function.
@param[in] Procedure A pointer to the function to be run on
enabled APs of the system.
@param[in] ProcessorNumber The handle number of the AP.
@param[in] WaitEvent The event created by the caller with CreateEvent()
service.
@param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for
APs to return from Procedure, either for
blocking or non-blocking mode.
@param[in] ProcedureArgument The parameter passed into Procedure for
all APs.
@param[out] Finished If AP returns from Procedure before the
timeout expires, its content is set to TRUE.
Otherwise, the value is set to FALSE.
@retval EFI_SUCCESS In blocking mode, specified AP finished before
the timeout expires.
@retval others Failed to Startup AP.
**/
EFI_STATUS
StartupThisAPWorker (
IN EFI_AP_PROCEDURE Procedure,
IN UINTN ProcessorNumber,
IN EFI_EVENT WaitEvent OPTIONAL,
IN UINTN TimeoutInMicroseconds,
IN VOID *ProcedureArgument OPTIONAL,
OUT BOOLEAN *Finished OPTIONAL
);
/**
Worker function to switch the requested AP to be the BSP from that point onward.
@param[in] ProcessorNumber The handle number of AP that is to become the new BSP.
@param[in] EnableOldBSP If TRUE, then the old BSP will be listed as an
enabled AP. Otherwise, it will be disabled.
@retval EFI_SUCCESS BSP successfully switched.
@retval others Failed to switch BSP.
**/
EFI_STATUS
SwitchBSPWorker (
IN UINTN ProcessorNumber,
IN BOOLEAN EnableOldBSP
);
/**
Worker function to let the caller enable or disable an AP from this point onward.
This service may only be called from the BSP.
@param[in] ProcessorNumber The handle number of AP.
@param[in] EnableAP Specifies the new state for the processor for
enabled, FALSE for disabled.
@param[in] HealthFlag If not NULL, a pointer to a value that specifies
the new health status of the AP.
@retval EFI_SUCCESS The specified AP was enabled or disabled successfully.
@retval others Failed to Enable/Disable AP.
**/
EFI_STATUS
EnableDisableApWorker (
IN UINTN ProcessorNumber,
IN BOOLEAN EnableAP,
IN UINT32 *HealthFlag OPTIONAL
);
/**
Get pointer to CPU MP Data structure from GUIDed HOB.
@return The pointer to CPU MP Data structure.
**/
CPU_MP_DATA *
GetCpuMpDataFromGuidedHob (
VOID
);
/** Checks status of specified AP.
This function checks whether the specified AP has finished the task assigned
by StartupThisAP(), and whether timeout expires.
@param[in] ProcessorNumber The handle number of processor.
@retval EFI_SUCCESS Specified AP has finished task assigned by StartupThisAPs().
@retval EFI_TIMEOUT The timeout expires.
@retval EFI_NOT_READY Specified AP has not finished task and timeout has not expired.
**/
EFI_STATUS
CheckThisAP (
IN UINTN ProcessorNumber
);
/**
Checks status of all APs.
This function checks whether all APs have finished task assigned by StartupAllAPs(),
and whether timeout expires.
@retval EFI_SUCCESS All APs have finished task assigned by StartupAllAPs().
@retval EFI_TIMEOUT The timeout expires.
@retval EFI_NOT_READY APs have not finished task and timeout has not expired.
**/
EFI_STATUS
CheckAllAPs (
VOID
);
/**
Checks APs status and updates APs status if needed.
**/
VOID
CheckAndUpdateApsStatus (
VOID
);
/**
Detect whether specified processor can find matching microcode patch and load it.
@param[in] CpuMpData The pointer to CPU MP Data structure.
**/
VOID
MicrocodeDetect (
IN CPU_MP_DATA *CpuMpData
);
/**
Detect whether Mwait-monitor feature is supported.
@retval TRUE Mwait-monitor feature is supported.
@retval FALSE Mwait-monitor feature is not supported.
**/
BOOLEAN
IsMwaitSupport (
VOID
);
/**
Notify function on End Of PEI PPI.
On S3 boot, this function will restore wakeup buffer data.
On normal boot, this function will flag wakeup buffer to be un-used type.
@param[in] PeiServices The pointer to the PEI Services Table.
@param[in] NotifyDescriptor Address of the notification descriptor data structure.
@param[in] Ppi Address of the PPI that was installed.
@retval EFI_SUCCESS When everything is OK.
**/
EFI_STATUS
EFIAPI
CpuMpEndOfPeiCallback (
IN EFI_PEI_SERVICES **PeiServices,
IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,
IN VOID *Ppi
);
/**
Get available system memory below 1MB by specified size.
@param[in] CpuMpData The pointer to CPU MP Data structure.
**/
VOID
BackupAndPrepareWakeupBuffer(
IN CPU_MP_DATA *CpuMpData
);
/**
Restore wakeup buffer data.
@param[in] CpuMpData The pointer to CPU MP Data structure.
**/
VOID
RestoreWakeupBuffer(
IN CPU_MP_DATA *CpuMpData
);
/**
Enable Debug Agent to support source debugging on AP function.
**/
VOID
EnableDebugAgent (
VOID
);
#endif