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|
/** @file
Agent Module to load other modules to deploy SMM Entry Vector for X86 CPU.
Copyright (c) 2009 - 2015, 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 _CPU_PISMMCPUDXESMM_H_
#define _CPU_PISMMCPUDXESMM_H_
#include <PiSmm.h>
#include <Protocol/MpService.h>
#include <Protocol/SmmConfiguration.h>
#include <Protocol/SmmCpu.h>
#include <Protocol/SmmAccess2.h>
#include <Protocol/SmmReadyToLock.h>
#include <Protocol/SmmCpuService.h>
#include <Guid/AcpiS3Context.h>
#include <Library/BaseLib.h>
#include <Library/IoLib.h>
#include <Library/TimerLib.h>
#include <Library/SynchronizationLib.h>
#include <Library/DebugLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/PcdLib.h>
#include <Library/CacheMaintenanceLib.h>
#include <Library/MtrrLib.h>
#include <Library/SmmCpuPlatformHookLib.h>
#include <Library/SmmServicesTableLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/DebugAgentLib.h>
#include <Library/HobLib.h>
#include <Library/LocalApicLib.h>
#include <Library/UefiCpuLib.h>
#include <Library/CpuExceptionHandlerLib.h>
#include <Library/ReportStatusCodeLib.h>
#include <Library/SmmCpuFeaturesLib.h>
#include <Library/PeCoffGetEntryPointLib.h>
#include <AcpiCpuData.h>
#include <CpuHotPlugData.h>
#include <Register/Cpuid.h>
#include "CpuService.h"
#include "SmmProfile.h"
//
// MSRs required for configuration of SMM Code Access Check
//
#define EFI_MSR_SMM_MCA_CAP 0x17D
#define SMM_CODE_ACCESS_CHK_BIT BIT58
#define SMM_FEATURE_CONTROL_LOCK_BIT BIT0
#define SMM_CODE_CHK_EN_BIT BIT2
///
/// Page Table Entry
///
#define IA32_PG_P BIT0
#define IA32_PG_RW BIT1
#define IA32_PG_WT BIT3
#define IA32_PG_CD BIT4
#define IA32_PG_A BIT5
#define IA32_PG_PS BIT7
#define IA32_PG_PAT_2M BIT12
#define IA32_PG_PAT_4K IA32_PG_PS
#define IA32_PG_PMNT BIT62
#define IA32_PG_NX BIT63
//
// Size of Task-State Segment defined in IA32 Manual
//
#define TSS_SIZE 104
#define TSS_X64_IST1_OFFSET 36
#define TSS_IA32_CR3_OFFSET 28
#define TSS_IA32_ESP_OFFSET 56
//
// Code select value
//
#define PROTECT_MODE_CODE_SEGMENT 0x08
#define LONG_MODE_CODE_SEGMENT 0x38
//
// The size 0x20 must be bigger than
// the size of template code of SmmInit. Currently,
// the size of SmmInit requires the 0x16 Bytes buffer
// at least.
//
#define BACK_BUF_SIZE 0x20
#define EXCEPTION_VECTOR_NUMBER 0x20
#define INVALID_APIC_ID 0xFFFFFFFFFFFFFFFFULL
typedef UINT32 SMM_CPU_ARRIVAL_EXCEPTIONS;
#define ARRIVAL_EXCEPTION_BLOCKED 0x1
#define ARRIVAL_EXCEPTION_DELAYED 0x2
#define ARRIVAL_EXCEPTION_SMI_DISABLED 0x4
//
// Private structure for the SMM CPU module that is stored in DXE Runtime memory
// Contains the SMM Configuration Protocols that is produced.
// Contains a mix of DXE and SMM contents. All the fields must be used properly.
//
#define SMM_CPU_PRIVATE_DATA_SIGNATURE SIGNATURE_32 ('s', 'c', 'p', 'u')
typedef struct {
UINTN Signature;
EFI_HANDLE SmmCpuHandle;
EFI_PROCESSOR_INFORMATION *ProcessorInfo;
SMM_CPU_OPERATION *Operation;
UINTN *CpuSaveStateSize;
VOID **CpuSaveState;
EFI_SMM_RESERVED_SMRAM_REGION SmmReservedSmramRegion[1];
EFI_SMM_ENTRY_CONTEXT SmmCoreEntryContext;
EFI_SMM_ENTRY_POINT SmmCoreEntry;
EFI_SMM_CONFIGURATION_PROTOCOL SmmConfiguration;
} SMM_CPU_PRIVATE_DATA;
extern SMM_CPU_PRIVATE_DATA *gSmmCpuPrivate;
extern CPU_HOT_PLUG_DATA mCpuHotPlugData;
extern UINTN mMaxNumberOfCpus;
extern UINTN mNumberOfCpus;
extern BOOLEAN mRestoreSmmConfigurationInS3;
extern EFI_SMM_CPU_PROTOCOL mSmmCpu;
///
/// The mode of the CPU at the time an SMI occurs
///
extern UINT8 mSmmSaveStateRegisterLma;
//
// SMM CPU Protocol function prototypes.
//
/**
Read information from the CPU save state.
@param This EFI_SMM_CPU_PROTOCOL instance
@param Width The number of bytes to read from the CPU save state.
@param Register Specifies the CPU register to read form the save state.
@param CpuIndex Specifies the zero-based index of the CPU save state
@param Buffer Upon return, this holds the CPU register value read from the save state.
@retval EFI_SUCCESS The register was read from Save State
@retval EFI_NOT_FOUND The register is not defined for the Save State of Processor
@retval EFI_INVALID_PARAMTER This or Buffer is NULL.
**/
EFI_STATUS
EFIAPI
SmmReadSaveState (
IN CONST EFI_SMM_CPU_PROTOCOL *This,
IN UINTN Width,
IN EFI_SMM_SAVE_STATE_REGISTER Register,
IN UINTN CpuIndex,
OUT VOID *Buffer
);
/**
Write data to the CPU save state.
@param This EFI_SMM_CPU_PROTOCOL instance
@param Width The number of bytes to read from the CPU save state.
@param Register Specifies the CPU register to write to the save state.
@param CpuIndex Specifies the zero-based index of the CPU save state
@param Buffer Upon entry, this holds the new CPU register value.
@retval EFI_SUCCESS The register was written from Save State
@retval EFI_NOT_FOUND The register is not defined for the Save State of Processor
@retval EFI_INVALID_PARAMTER ProcessorIndex or Width is not correct
**/
EFI_STATUS
EFIAPI
SmmWriteSaveState (
IN CONST EFI_SMM_CPU_PROTOCOL *This,
IN UINTN Width,
IN EFI_SMM_SAVE_STATE_REGISTER Register,
IN UINTN CpuIndex,
IN CONST VOID *Buffer
);
/**
Read a CPU Save State register on the target processor.
This function abstracts the differences that whether the CPU Save State register is in the
IA32 CPU Save State Map or X64 CPU Save State Map.
This function supports reading a CPU Save State register in SMBase relocation handler.
@param[in] CpuIndex Specifies the zero-based index of the CPU save state.
@param[in] RegisterIndex Index into mSmmCpuWidthOffset[] look up table.
@param[in] Width The number of bytes to read from the CPU save state.
@param[out] Buffer Upon return, this holds the CPU register value read from the save state.
@retval EFI_SUCCESS The register was read from Save State.
@retval EFI_NOT_FOUND The register is not defined for the Save State of Processor.
@retval EFI_INVALID_PARAMTER This or Buffer is NULL.
**/
EFI_STATUS
EFIAPI
ReadSaveStateRegister (
IN UINTN CpuIndex,
IN EFI_SMM_SAVE_STATE_REGISTER Register,
IN UINTN Width,
OUT VOID *Buffer
);
/**
Write value to a CPU Save State register on the target processor.
This function abstracts the differences that whether the CPU Save State register is in the
IA32 CPU Save State Map or X64 CPU Save State Map.
This function supports writing a CPU Save State register in SMBase relocation handler.
@param[in] CpuIndex Specifies the zero-based index of the CPU save state.
@param[in] RegisterIndex Index into mSmmCpuWidthOffset[] look up table.
@param[in] Width The number of bytes to read from the CPU save state.
@param[in] Buffer Upon entry, this holds the new CPU register value.
@retval EFI_SUCCESS The register was written to Save State.
@retval EFI_NOT_FOUND The register is not defined for the Save State of Processor.
@retval EFI_INVALID_PARAMTER ProcessorIndex or Width is not correct.
**/
EFI_STATUS
EFIAPI
WriteSaveStateRegister (
IN UINTN CpuIndex,
IN EFI_SMM_SAVE_STATE_REGISTER Register,
IN UINTN Width,
IN CONST VOID *Buffer
);
//
//
//
typedef struct {
UINT32 Offset;
UINT16 Segment;
UINT16 Reserved;
} IA32_FAR_ADDRESS;
extern IA32_FAR_ADDRESS gSmmJmpAddr;
extern CONST UINT8 gcSmmInitTemplate[];
extern CONST UINT16 gcSmmInitSize;
extern UINT32 gSmmCr0;
extern UINT32 gSmmCr3;
extern UINT32 gSmmCr4;
extern UINTN gSmmInitStack;
/**
Semaphore operation for all processor relocate SMMBase.
**/
VOID
EFIAPI
SmmRelocationSemaphoreComplete (
VOID
);
///
/// The type of SMM CPU Information
///
typedef struct {
SPIN_LOCK Busy;
volatile EFI_AP_PROCEDURE Procedure;
volatile VOID *Parameter;
volatile UINT32 Run;
volatile BOOLEAN Present;
} SMM_CPU_DATA_BLOCK;
typedef enum {
SmmCpuSyncModeTradition,
SmmCpuSyncModeRelaxedAp,
SmmCpuSyncModeMax
} SMM_CPU_SYNC_MODE;
typedef struct {
//
// Pointer to an array. The array should be located immediately after this structure
// so that UC cache-ability can be set together.
//
SMM_CPU_DATA_BLOCK *CpuData;
volatile UINT32 Counter;
volatile UINT32 BspIndex;
volatile BOOLEAN InsideSmm;
volatile BOOLEAN AllCpusInSync;
volatile SMM_CPU_SYNC_MODE EffectiveSyncMode;
volatile BOOLEAN SwitchBsp;
volatile BOOLEAN *CandidateBsp;
} SMM_DISPATCHER_MP_SYNC_DATA;
typedef struct {
SPIN_LOCK SpinLock;
UINT32 MsrIndex;
} MP_MSR_LOCK;
#define SMM_PSD_OFFSET 0xfb00
typedef struct {
UINT64 Signature; // Offset 0x00
UINT16 Reserved1; // Offset 0x08
UINT16 Reserved2; // Offset 0x0A
UINT16 Reserved3; // Offset 0x0C
UINT16 SmmCs; // Offset 0x0E
UINT16 SmmDs; // Offset 0x10
UINT16 SmmSs; // Offset 0x12
UINT16 SmmOtherSegment; // Offset 0x14
UINT16 Reserved4; // Offset 0x16
UINT64 Reserved5; // Offset 0x18
UINT64 Reserved6; // Offset 0x20
UINT64 Reserved7; // Offset 0x28
UINT64 SmmGdtPtr; // Offset 0x30
UINT32 SmmGdtSize; // Offset 0x38
UINT32 Reserved8; // Offset 0x3C
UINT64 Reserved9; // Offset 0x40
UINT64 Reserved10; // Offset 0x48
UINT16 Reserved11; // Offset 0x50
UINT16 Reserved12; // Offset 0x52
UINT32 Reserved13; // Offset 0x54
UINT64 MtrrBaseMaskPtr; // Offset 0x58
} PROCESSOR_SMM_DESCRIPTOR;
extern IA32_DESCRIPTOR gcSmiGdtr;
extern IA32_DESCRIPTOR gcSmiIdtr;
extern VOID *gcSmiIdtrPtr;
extern CONST PROCESSOR_SMM_DESCRIPTOR gcPsd;
extern UINT64 gPhyMask;
extern ACPI_CPU_DATA mAcpiCpuData;
extern SMM_DISPATCHER_MP_SYNC_DATA *mSmmMpSyncData;
extern VOID *mGdtForAp;
extern VOID *mIdtForAp;
extern VOID *mMachineCheckHandlerForAp;
extern UINTN mSmmStackArrayBase;
extern UINTN mSmmStackArrayEnd;
extern UINTN mSmmStackSize;
extern EFI_SMM_CPU_SERVICE_PROTOCOL mSmmCpuService;
extern IA32_DESCRIPTOR gcSmiInitGdtr;
/**
Create 4G PageTable in SMRAM.
@param ExtraPages Additional page numbers besides for 4G memory
@return PageTable Address
**/
UINT32
Gen4GPageTable (
IN UINTN ExtraPages
);
/**
Initialize global data for MP synchronization.
@param Stacks Base address of SMI stack buffer for all processors.
@param StackSize Stack size for each processor in SMM.
**/
UINT32
InitializeMpServiceData (
IN VOID *Stacks,
IN UINTN StackSize
);
/**
Initialize Timer for SMM AP Sync.
**/
VOID
InitializeSmmTimer (
VOID
);
/**
Start Timer for SMM AP Sync.
**/
UINT64
EFIAPI
StartSyncTimer (
VOID
);
/**
Check if the SMM AP Sync timer is timeout.
@param Timer The start timer from the begin.
**/
BOOLEAN
EFIAPI
IsSyncTimerTimeout (
IN UINT64 Timer
);
/**
Initialize IDT for SMM Stack Guard.
**/
VOID
EFIAPI
InitializeIDTSmmStackGuard (
VOID
);
/**
Initialize Gdt for all processors.
@param[in] Cr3 CR3 value.
@param[out] GdtStepSize The step size for GDT table.
@return GdtBase for processor 0.
GdtBase for processor X is: GdtBase + (GdtStepSize * X)
**/
VOID *
InitGdt (
IN UINTN Cr3,
OUT UINTN *GdtStepSize
);
/**
Register the SMM Foundation entry point.
@param This Pointer to EFI_SMM_CONFIGURATION_PROTOCOL instance
@param SmmEntryPoint SMM Foundation EntryPoint
@retval EFI_SUCCESS Successfully to register SMM foundation entry point
**/
EFI_STATUS
EFIAPI
RegisterSmmEntry (
IN CONST EFI_SMM_CONFIGURATION_PROTOCOL *This,
IN EFI_SMM_ENTRY_POINT SmmEntryPoint
);
/**
Create PageTable for SMM use.
@return PageTable Address
**/
UINT32
SmmInitPageTable (
VOID
);
/**
Schedule a procedure to run on the specified CPU.
@param Procedure The address of the procedure to run
@param CpuIndex Target CPU number
@param ProcArguments The parameter to pass to the procedure
@retval EFI_INVALID_PARAMETER CpuNumber not valid
@retval EFI_INVALID_PARAMETER CpuNumber specifying BSP
@retval EFI_INVALID_PARAMETER The AP specified by CpuNumber did not enter SMM
@retval EFI_INVALID_PARAMETER The AP specified by CpuNumber is busy
@retval EFI_SUCCESS - The procedure has been successfully scheduled
**/
EFI_STATUS
EFIAPI
SmmStartupThisAp (
IN EFI_AP_PROCEDURE Procedure,
IN UINTN CpuIndex,
IN OUT VOID *ProcArguments OPTIONAL
);
/**
Schedule a procedure to run on the specified CPU in a blocking fashion.
@param Procedure The address of the procedure to run
@param CpuIndex Target CPU Index
@param ProcArguments The parameter to pass to the procedure
@retval EFI_INVALID_PARAMETER CpuNumber not valid
@retval EFI_INVALID_PARAMETER CpuNumber specifying BSP
@retval EFI_INVALID_PARAMETER The AP specified by CpuNumber did not enter SMM
@retval EFI_INVALID_PARAMETER The AP specified by CpuNumber is busy
@retval EFI_SUCCESS The procedure has been successfully scheduled
**/
EFI_STATUS
EFIAPI
SmmBlockingStartupThisAp (
IN EFI_AP_PROCEDURE Procedure,
IN UINTN CpuIndex,
IN OUT VOID *ProcArguments OPTIONAL
);
/**
Initialize MP synchronization data.
**/
VOID
EFIAPI
InitializeMpSyncData (
VOID
);
/**
Find out SMRAM information including SMRR base and SMRR size.
@param SmrrBase SMRR base
@param SmrrSize SMRR size
**/
VOID
FindSmramInfo (
OUT UINT32 *SmrrBase,
OUT UINT32 *SmrrSize
);
/**
The function is invoked before SMBASE relocation in S3 path to restores CPU status.
The function is invoked before SMBASE relocation in S3 path. It does first time microcode load
and restores MTRRs for both BSP and APs.
**/
VOID
EarlyInitializeCpu (
VOID
);
/**
The function is invoked after SMBASE relocation in S3 path to restores CPU status.
The function is invoked after SMBASE relocation in S3 path. It restores configuration according to
data saved by normal boot path for both BSP and APs.
**/
VOID
InitializeCpu (
VOID
);
/**
Page Fault handler for SMM use.
@param InterruptType Defines the type of interrupt or exception that
occurred on the processor.This parameter is processor architecture specific.
@param SystemContext A pointer to the processor context when
the interrupt occurred on the processor.
**/
VOID
EFIAPI
SmiPFHandler (
IN EFI_EXCEPTION_TYPE InterruptType,
IN EFI_SYSTEM_CONTEXT SystemContext
);
/**
Perform the remaining tasks.
**/
VOID
PerformRemainingTasks (
VOID
);
/**
Initialize MSR spin lock by MSR index.
@param MsrIndex MSR index value.
**/
VOID
InitMsrSpinLockByIndex (
IN UINT32 MsrIndex
);
/**
Hook return address of SMM Save State so that semaphore code
can be executed immediately after AP exits SMM to indicate to
the BSP that an AP has exited SMM after SMBASE relocation.
@param[in] CpuIndex The processor index.
@param[in] RebasedFlag A pointer to a flag that is set to TRUE
immediately after AP exits SMM.
**/
VOID
SemaphoreHook (
IN UINTN CpuIndex,
IN volatile BOOLEAN *RebasedFlag
);
/**
Configure SMM Code Access Check feature for all processors.
SMM Feature Control MSR will be locked after configuration.
**/
VOID
ConfigSmmCodeAccessCheck (
VOID
);
/**
Hook the code executed immediately after an RSM instruction on the currently
executing CPU. The mode of code executed immediately after RSM must be
detected, and the appropriate hook must be selected. Always clear the auto
HALT restart flag if it is set.
@param[in] CpuIndex The processor index for the currently
executing CPU.
@param[in] CpuState Pointer to SMRAM Save State Map for the
currently executing CPU.
@param[in] NewInstructionPointer32 Instruction pointer to use if resuming to
32-bit mode from 64-bit SMM.
@param[in] NewInstructionPointer Instruction pointer to use if resuming to
same mode as SMM.
@retval The value of the original instruction pointer before it was hooked.
**/
UINT64
EFIAPI
HookReturnFromSmm (
IN UINTN CpuIndex,
SMRAM_SAVE_STATE_MAP *CpuState,
UINT64 NewInstructionPointer32,
UINT64 NewInstructionPointer
);
/**
Get the size of the SMI Handler in bytes.
@retval The size, in bytes, of the SMI Handler.
**/
UINTN
EFIAPI
GetSmiHandlerSize (
VOID
);
/**
Install the SMI handler for the CPU specified by CpuIndex. This function
is called by the CPU that was elected as monarch during System Management
Mode initialization.
@param[in] CpuIndex The index of the CPU to install the custom SMI handler.
The value must be between 0 and the NumberOfCpus field
in the System Management System Table (SMST).
@param[in] SmBase The SMBASE address for the CPU specified by CpuIndex.
@param[in] SmiStack The stack to use when an SMI is processed by the
the CPU specified by CpuIndex.
@param[in] StackSize The size, in bytes, if the stack used when an SMI is
processed by the CPU specified by CpuIndex.
@param[in] GdtBase The base address of the GDT to use when an SMI is
processed by the CPU specified by CpuIndex.
@param[in] GdtSize The size, in bytes, of the GDT used when an SMI is
processed by the CPU specified by CpuIndex.
@param[in] IdtBase The base address of the IDT to use when an SMI is
processed by the CPU specified by CpuIndex.
@param[in] IdtSize The size, in bytes, of the IDT used when an SMI is
processed by the CPU specified by CpuIndex.
@param[in] Cr3 The base address of the page tables to use when an SMI
is processed by the CPU specified by CpuIndex.
**/
VOID
EFIAPI
InstallSmiHandler (
IN UINTN CpuIndex,
IN UINT32 SmBase,
IN VOID *SmiStack,
IN UINTN StackSize,
IN UINTN GdtBase,
IN UINTN GdtSize,
IN UINTN IdtBase,
IN UINTN IdtSize,
IN UINT32 Cr3
);
/**
Search module name by input IP address and output it.
@param CallerIpAddress Caller instruction pointer.
**/
VOID
DumpModuleInfoByIp (
IN UINTN CallerIpAddress
);
#endif
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