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audk/MdeModulePkg/Core/PiSmmCore/SmiHandlerProfile.c

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/** @file
SMI handler profile support.
Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <PiSmm.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/SmmServicesTableLib.h>
#include <Library/DebugLib.h>
#include <Library/PrintLib.h>
#include <Library/UefiLib.h>
#include <Library/DevicePathLib.h>
#include <Library/PeCoffGetEntryPointLib.h>
#include <Protocol/LoadedImage.h>
#include <Protocol/SmmAccess2.h>
#include <Protocol/SmmReadyToLock.h>
#include <Protocol/SmmEndOfDxe.h>
#include <Guid/SmiHandlerProfile.h>
#include "PiSmmCore.h"
#define GET_OCCUPIED_SIZE(ActualSize, Alignment) \
((ActualSize) + (((Alignment) - ((ActualSize) & ((Alignment) - 1))) & ((Alignment) - 1)))
typedef struct {
EFI_GUID FileGuid;
PHYSICAL_ADDRESS EntryPoint;
PHYSICAL_ADDRESS ImageBase;
UINT64 ImageSize;
UINT32 ImageRef;
UINT16 PdbStringSize;
CHAR8 *PdbString;
} IMAGE_STRUCT;
/**
Register SMI handler profile handler.
**/
VOID
RegisterSmiHandlerProfileHandler(
VOID
);
/**
Retrieves and returns a pointer to the entry point to a PE/COFF image that has been loaded
into system memory with the PE/COFF Loader Library functions.
Retrieves the entry point to the PE/COFF image specified by Pe32Data and returns this entry
point in EntryPoint. If the entry point could not be retrieved from the PE/COFF image, then
return RETURN_INVALID_PARAMETER. Otherwise return RETURN_SUCCESS.
If Pe32Data is NULL, then ASSERT().
If EntryPoint is NULL, then ASSERT().
@param Pe32Data The pointer to the PE/COFF image that is loaded in system memory.
@param EntryPoint The pointer to entry point to the PE/COFF image to return.
@retval RETURN_SUCCESS EntryPoint was returned.
@retval RETURN_INVALID_PARAMETER The entry point could not be found in the PE/COFF image.
**/
RETURN_STATUS
InternalPeCoffGetEntryPoint (
IN VOID *Pe32Data,
OUT VOID **EntryPoint
);
extern LIST_ENTRY mSmiEntryList;
extern LIST_ENTRY mHardwareSmiEntryList;
extern SMI_ENTRY mRootSmiEntry;
extern SMI_HANDLER_PROFILE_PROTOCOL mSmiHandlerProfile;
GLOBAL_REMOVE_IF_UNREFERENCED LIST_ENTRY mHardwareSmiEntryList = INITIALIZE_LIST_HEAD_VARIABLE (mHardwareSmiEntryList);
GLOBAL_REMOVE_IF_UNREFERENCED LIST_ENTRY mRootSmiEntryList = INITIALIZE_LIST_HEAD_VARIABLE (mRootSmiEntryList);
GLOBAL_REMOVE_IF_UNREFERENCED LIST_ENTRY *mSmmCoreRootSmiEntryList = &mRootSmiEntryList;
GLOBAL_REMOVE_IF_UNREFERENCED LIST_ENTRY *mSmmCoreSmiEntryList = &mSmiEntryList;
GLOBAL_REMOVE_IF_UNREFERENCED LIST_ENTRY *mSmmCoreHardwareSmiEntryList = &mHardwareSmiEntryList;
GLOBAL_REMOVE_IF_UNREFERENCED IMAGE_STRUCT *mImageStruct;
GLOBAL_REMOVE_IF_UNREFERENCED UINT32 mImageStructCountMax;
GLOBAL_REMOVE_IF_UNREFERENCED UINT32 mImageStructCount;
GLOBAL_REMOVE_IF_UNREFERENCED VOID *mSmiHandlerProfileDatabase;
GLOBAL_REMOVE_IF_UNREFERENCED UINTN mSmiHandlerProfileDatabaseSize;
GLOBAL_REMOVE_IF_UNREFERENCED UINTN mSmmImageDatabaseSize;
GLOBAL_REMOVE_IF_UNREFERENCED UINTN mSmmRootSmiDatabaseSize;
GLOBAL_REMOVE_IF_UNREFERENCED UINTN mSmmSmiDatabaseSize;
GLOBAL_REMOVE_IF_UNREFERENCED UINTN mSmmHardwareSmiDatabaseSize;
GLOBAL_REMOVE_IF_UNREFERENCED BOOLEAN mSmiHandlerProfileRecordingStatus;
GLOBAL_REMOVE_IF_UNREFERENCED SMI_HANDLER_PROFILE_PROTOCOL mSmiHandlerProfile = {
SmiHandlerProfileRegisterHandler,
SmiHandlerProfileUnregisterHandler,
};
/**
This function dump raw data.
@param Data raw data
@param Size raw data size
**/
VOID
InternalDumpData (
IN UINT8 *Data,
IN UINTN Size
)
{
UINTN Index;
for (Index = 0; Index < Size; Index++) {
DEBUG ((DEBUG_INFO, "%02x ", (UINTN)Data[Index]));
}
}
/**
Get GUID name for an image.
@param[in] LoadedImage LoadedImage protocol.
@param[out] Guid Guid of the FFS
**/
VOID
GetDriverGuid (
IN EFI_LOADED_IMAGE_PROTOCOL *LoadedImage,
OUT EFI_GUID *Guid
)
{
EFI_GUID *FileName;
FileName = NULL;
if ((DevicePathType(LoadedImage->FilePath) == MEDIA_DEVICE_PATH) &&
(DevicePathSubType(LoadedImage->FilePath) == MEDIA_PIWG_FW_FILE_DP)) {
FileName = &((MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *)LoadedImage->FilePath)->FvFileName;
}
if (FileName != NULL) {
CopyGuid(Guid, FileName);
} else {
ZeroMem(Guid, sizeof(EFI_GUID));
}
}
/**
Add image structure.
@param ImageBase image base
@param ImageSize image size
@param EntryPoint image entry point
@param Guid FFS GUID of the image
@param PdbString image PDB string
**/
VOID
AddImageStruct(
IN PHYSICAL_ADDRESS ImageBase,
IN UINT64 ImageSize,
IN PHYSICAL_ADDRESS EntryPoint,
IN EFI_GUID *Guid,
IN CHAR8 *PdbString
)
{
UINTN PdbStringSize;
if (mImageStructCount >= mImageStructCountMax) {
ASSERT(FALSE);
return;
}
CopyGuid(&mImageStruct[mImageStructCount].FileGuid, Guid);
mImageStruct[mImageStructCount].ImageRef = mImageStructCount;
mImageStruct[mImageStructCount].ImageBase = ImageBase;
mImageStruct[mImageStructCount].ImageSize = ImageSize;
mImageStruct[mImageStructCount].EntryPoint = EntryPoint;
if (PdbString != NULL) {
PdbStringSize = AsciiStrSize(PdbString);
mImageStruct[mImageStructCount].PdbString = AllocateCopyPool (PdbStringSize, PdbString);
if (mImageStruct[mImageStructCount].PdbString != NULL) {
mImageStruct[mImageStructCount].PdbStringSize = (UINT16) PdbStringSize;
}
}
mImageStructCount++;
}
/**
return an image structure based upon image address.
@param Address image address
@return image structure
**/
IMAGE_STRUCT *
AddressToImageStruct(
IN UINTN Address
)
{
UINTN Index;
for (Index = 0; Index < mImageStructCount; Index++) {
if ((Address >= mImageStruct[Index].ImageBase) &&
(Address < mImageStruct[Index].ImageBase + mImageStruct[Index].ImageSize)) {
return &mImageStruct[Index];
}
}
return NULL;
}
/**
return an image reference index based upon image address.
@param Address image address
@return image reference index
**/
UINT32
AddressToImageRef(
IN UINTN Address
)
{
IMAGE_STRUCT *ImageStruct;
ImageStruct = AddressToImageStruct(Address);
if (ImageStruct != NULL) {
return ImageStruct->ImageRef;
}
return (UINT32)-1;
}
/**
Collect SMM image information based upon loaded image protocol.
**/
VOID
GetSmmLoadedImage(
VOID
)
{
EFI_STATUS Status;
UINTN NoHandles;
UINTN HandleBufferSize;
EFI_HANDLE *HandleBuffer;
UINTN Index;
EFI_LOADED_IMAGE_PROTOCOL *LoadedImage;
CHAR16 *PathStr;
EFI_SMM_DRIVER_ENTRY *LoadedImagePrivate;
PHYSICAL_ADDRESS EntryPoint;
VOID *EntryPointInImage;
EFI_GUID Guid;
CHAR8 *PdbString;
PHYSICAL_ADDRESS RealImageBase;
HandleBufferSize = 0;
HandleBuffer = NULL;
Status = gSmst->SmmLocateHandle(
ByProtocol,
&gEfiLoadedImageProtocolGuid,
NULL,
&HandleBufferSize,
HandleBuffer
);
if (Status != EFI_BUFFER_TOO_SMALL) {
return;
}
HandleBuffer = AllocateZeroPool (HandleBufferSize);
if (HandleBuffer == NULL) {
return;
}
Status = gSmst->SmmLocateHandle(
ByProtocol,
&gEfiLoadedImageProtocolGuid,
NULL,
&HandleBufferSize,
HandleBuffer
);
if (EFI_ERROR(Status)) {
return;
}
NoHandles = HandleBufferSize/sizeof(EFI_HANDLE);
mImageStructCountMax = (UINT32) NoHandles;
mImageStruct = AllocateZeroPool(mImageStructCountMax * sizeof(IMAGE_STRUCT));
if (mImageStruct == NULL) {
goto Done;
}
for (Index = 0; Index < NoHandles; Index++) {
Status = gSmst->SmmHandleProtocol(
HandleBuffer[Index],
&gEfiLoadedImageProtocolGuid,
(VOID **)&LoadedImage
);
if (EFI_ERROR(Status)) {
continue;
}
PathStr = ConvertDevicePathToText(LoadedImage->FilePath, TRUE, TRUE);
GetDriverGuid(LoadedImage, &Guid);
DEBUG ((DEBUG_INFO, "Image: %g ", &Guid));
EntryPoint = 0;
LoadedImagePrivate = BASE_CR(LoadedImage, EFI_SMM_DRIVER_ENTRY, SmmLoadedImage);
RealImageBase = (UINTN)LoadedImage->ImageBase;
if (LoadedImagePrivate->Signature == EFI_SMM_DRIVER_ENTRY_SIGNATURE) {
EntryPoint = LoadedImagePrivate->ImageEntryPoint;
if ((EntryPoint != 0) && ((EntryPoint < (UINTN)LoadedImage->ImageBase) || (EntryPoint >= ((UINTN)LoadedImage->ImageBase + LoadedImage->ImageSize)))) {
//
// If the EntryPoint is not in the range of image buffer, it should come from emulation environment.
// So patch ImageBuffer here to align the EntryPoint.
//
Status = InternalPeCoffGetEntryPoint(LoadedImage->ImageBase, &EntryPointInImage);
ASSERT_EFI_ERROR(Status);
RealImageBase = (UINTN)LoadedImage->ImageBase + EntryPoint - (UINTN)EntryPointInImage;
}
}
DEBUG ((DEBUG_INFO, "(0x%lx - 0x%lx", RealImageBase, LoadedImage->ImageSize));
if (EntryPoint != 0) {
DEBUG ((DEBUG_INFO, ", EntryPoint:0x%lx", EntryPoint));
}
DEBUG ((DEBUG_INFO, ")\n"));
if (RealImageBase != 0) {
PdbString = PeCoffLoaderGetPdbPointer ((VOID*) (UINTN) RealImageBase);
DEBUG ((DEBUG_INFO, " pdb - %a\n", PdbString));
} else {
PdbString = NULL;
}
DEBUG ((DEBUG_INFO, " (%s)\n", PathStr));
AddImageStruct(RealImageBase, LoadedImage->ImageSize, EntryPoint, &Guid, PdbString);
}
Done:
FreePool(HandleBuffer);
return;
}
/**
Dump SMI child context.
@param HandlerType the handler type
@param Context the handler context
@param ContextSize the handler context size
**/
VOID
DumpSmiChildContext (
IN EFI_GUID *HandlerType,
IN VOID *Context,
IN UINTN ContextSize
)
{
CHAR16 *Str;
if (CompareGuid (HandlerType, &gEfiSmmSwDispatch2ProtocolGuid)) {
DEBUG ((DEBUG_INFO, " SwSmi - 0x%lx\n", ((SMI_HANDLER_PROFILE_SW_REGISTER_CONTEXT *)Context)->SwSmiInputValue));
} else if (CompareGuid (HandlerType, &gEfiSmmSxDispatch2ProtocolGuid)) {
DEBUG ((DEBUG_INFO, " SxType - 0x%x\n", ((EFI_SMM_SX_REGISTER_CONTEXT *)Context)->Type));
DEBUG ((DEBUG_INFO, " SxPhase - 0x%x\n", ((EFI_SMM_SX_REGISTER_CONTEXT *)Context)->Phase));
} else if (CompareGuid (HandlerType, &gEfiSmmPowerButtonDispatch2ProtocolGuid)) {
DEBUG ((DEBUG_INFO, " PowerButtonPhase - 0x%x\n", ((EFI_SMM_POWER_BUTTON_REGISTER_CONTEXT *)Context)->Phase));
} else if (CompareGuid (HandlerType, &gEfiSmmStandbyButtonDispatch2ProtocolGuid)) {
DEBUG ((DEBUG_INFO, " StandbyButtonPhase - 0x%x\n", ((EFI_SMM_STANDBY_BUTTON_REGISTER_CONTEXT *)Context)->Phase));
} else if (CompareGuid (HandlerType, &gEfiSmmPeriodicTimerDispatch2ProtocolGuid)) {
DEBUG ((DEBUG_INFO, " PeriodicTimerPeriod - %ld\n", ((EFI_SMM_PERIODIC_TIMER_REGISTER_CONTEXT *)Context)->Period));
DEBUG ((DEBUG_INFO, " PeriodicTimerSmiTickInterval - %ld\n", ((EFI_SMM_PERIODIC_TIMER_REGISTER_CONTEXT *)Context)->SmiTickInterval));
} else if (CompareGuid (HandlerType, &gEfiSmmGpiDispatch2ProtocolGuid)) {
DEBUG ((DEBUG_INFO, " GpiNum - 0x%lx\n", ((EFI_SMM_GPI_REGISTER_CONTEXT *)Context)->GpiNum));
} else if (CompareGuid (HandlerType, &gEfiSmmIoTrapDispatch2ProtocolGuid)) {
DEBUG ((DEBUG_INFO, " IoTrapAddress - 0x%x\n", ((EFI_SMM_IO_TRAP_REGISTER_CONTEXT *)Context)->Address));
DEBUG ((DEBUG_INFO, " IoTrapLength - 0x%x\n", ((EFI_SMM_IO_TRAP_REGISTER_CONTEXT *)Context)->Length));
DEBUG ((DEBUG_INFO, " IoTrapType - 0x%x\n", ((EFI_SMM_IO_TRAP_REGISTER_CONTEXT *)Context)->Type));
} else if (CompareGuid (HandlerType, &gEfiSmmUsbDispatch2ProtocolGuid)) {
DEBUG ((DEBUG_INFO, " UsbType - 0x%x\n", ((SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT *)Context)->Type));
Str = ConvertDevicePathToText((EFI_DEVICE_PATH_PROTOCOL *)(((SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT *)Context) + 1), TRUE, TRUE);
DEBUG ((DEBUG_INFO, " UsbDevicePath - %s\n", Str));
if (Str != NULL) {
FreePool (Str);
}
} else {
DEBUG ((DEBUG_INFO, " Context - "));
InternalDumpData (Context, ContextSize);
DEBUG ((DEBUG_INFO, "\n"));
}
}
/**
Dump all SMI handlers associated with SmiEntry.
@param SmiEntry SMI entry.
**/
VOID
DumpSmiHandlerOnSmiEntry(
IN SMI_ENTRY *SmiEntry
)
{
LIST_ENTRY *ListEntry;
SMI_HANDLER *SmiHandler;
IMAGE_STRUCT *ImageStruct;
ListEntry = &SmiEntry->SmiHandlers;
for (ListEntry = ListEntry->ForwardLink;
ListEntry != &SmiEntry->SmiHandlers;
ListEntry = ListEntry->ForwardLink) {
SmiHandler = CR(ListEntry, SMI_HANDLER, Link, SMI_HANDLER_SIGNATURE);
ImageStruct = AddressToImageStruct((UINTN)SmiHandler->Handler);
if (ImageStruct != NULL) {
DEBUG ((DEBUG_INFO, " Module - %g", &ImageStruct->FileGuid));
}
if ((ImageStruct != NULL) && (ImageStruct->PdbString[0] != 0)) {
DEBUG ((DEBUG_INFO, " (Pdb - %a)", ImageStruct->PdbString));
}
DEBUG ((DEBUG_INFO, "\n"));
if (SmiHandler->ContextSize != 0) {
DumpSmiChildContext (&SmiEntry->HandlerType, SmiHandler->Context, SmiHandler->ContextSize);
}
DEBUG ((DEBUG_INFO, " Handler - 0x%x", SmiHandler->Handler));
if (ImageStruct != NULL) {
DEBUG ((DEBUG_INFO, " <== RVA - 0x%x", (UINTN)SmiHandler->Handler - (UINTN) ImageStruct->ImageBase));
}
DEBUG ((DEBUG_INFO, "\n"));
DEBUG ((DEBUG_INFO, " CallerAddr - 0x%x", SmiHandler->CallerAddr));
if (ImageStruct != NULL) {
DEBUG ((DEBUG_INFO, " <== RVA - 0x%x", SmiHandler->CallerAddr - (UINTN) ImageStruct->ImageBase));
}
DEBUG ((DEBUG_INFO, "\n"));
}
return;
}
/**
Dump all SMI entry on the list.
@param SmiEntryList a list of SMI entry.
**/
VOID
DumpSmiEntryList(
IN LIST_ENTRY *SmiEntryList
)
{
LIST_ENTRY *ListEntry;
SMI_ENTRY *SmiEntry;
ListEntry = SmiEntryList;
for (ListEntry = ListEntry->ForwardLink;
ListEntry != SmiEntryList;
ListEntry = ListEntry->ForwardLink) {
SmiEntry = CR(ListEntry, SMI_ENTRY, AllEntries, SMI_ENTRY_SIGNATURE);
DEBUG ((DEBUG_INFO, "SmiEntry - %g\n", &SmiEntry->HandlerType));
DumpSmiHandlerOnSmiEntry(SmiEntry);
}
return;
}
/**
SMM Ready To Lock event notification handler.
This function collects all SMM image information and build SmiHandleProfile database,
and register SmiHandlerProfile SMI handler.
@param[in] Protocol Points to the protocol's unique identifier.
@param[in] Interface Points to the interface instance.
@param[in] Handle The handle on which the interface was installed.
@retval EFI_SUCCESS Notification handler runs successfully.
**/
EFI_STATUS
EFIAPI
SmmReadyToLockInSmiHandlerProfile (
IN CONST EFI_GUID *Protocol,
IN VOID *Interface,
IN EFI_HANDLE Handle
)
{
//
// Dump all image
//
DEBUG ((DEBUG_INFO, "##################\n"));
DEBUG ((DEBUG_INFO, "# IMAGE DATABASE #\n"));
DEBUG ((DEBUG_INFO, "##################\n"));
GetSmmLoadedImage ();
DEBUG ((DEBUG_INFO, "\n"));
//
// Dump SMI Handler
//
DEBUG ((DEBUG_INFO, "########################\n"));
DEBUG ((DEBUG_INFO, "# SMI Handler DATABASE #\n"));
DEBUG ((DEBUG_INFO, "########################\n"));
DEBUG ((DEBUG_INFO, "# 1. ROOT SMI Handler #\n"));
DEBUG_CODE (
DumpSmiEntryList(mSmmCoreRootSmiEntryList);
);
DEBUG ((DEBUG_INFO, "# 2. GUID SMI Handler #\n"));
DEBUG_CODE (
DumpSmiEntryList(mSmmCoreSmiEntryList);
);
DEBUG ((DEBUG_INFO, "# 3. Hardware SMI Handler #\n"));
DEBUG_CODE (
DumpSmiEntryList(mSmmCoreHardwareSmiEntryList);
);
DEBUG ((DEBUG_INFO, "\n"));
RegisterSmiHandlerProfileHandler();
if (mImageStruct != NULL) {
FreePool(mImageStruct);
}
return EFI_SUCCESS;
}
/**
returns SMM image data base size.
@return SMM image data base size.
**/
UINTN
GetSmmImageDatabaseSize(
VOID
)
{
UINTN Size;
UINT32 Index;
Size = 0;
for (Index = 0; Index < mImageStructCount; Index++) {
Size += sizeof(SMM_CORE_IMAGE_DATABASE_STRUCTURE) + GET_OCCUPIED_SIZE (mImageStruct[Index].PdbStringSize, sizeof (UINT64));
}
return Size;
}
/**
returns all SMI handlers' size associated with SmiEntry.
@param SmiEntry SMI entry.
@return all SMI handlers' size associated with SmiEntry.
**/
UINTN
GetSmmSmiHandlerSizeOnSmiEntry(
IN SMI_ENTRY *SmiEntry
)
{
LIST_ENTRY *ListEntry;
SMI_HANDLER *SmiHandler;
UINTN Size;
Size = 0;
ListEntry = &SmiEntry->SmiHandlers;
for (ListEntry = ListEntry->ForwardLink;
ListEntry != &SmiEntry->SmiHandlers;
ListEntry = ListEntry->ForwardLink) {
SmiHandler = CR(ListEntry, SMI_HANDLER, Link, SMI_HANDLER_SIGNATURE);
Size += sizeof(SMM_CORE_SMI_HANDLER_STRUCTURE) + GET_OCCUPIED_SIZE (SmiHandler->ContextSize, sizeof (UINT64));
}
return Size;
}
/**
return all SMI handler database size on the SMI entry list.
@param SmiEntryList a list of SMI entry.
@return all SMI handler database size on the SMI entry list.
**/
UINTN
GetSmmSmiDatabaseSize(
IN LIST_ENTRY *SmiEntryList
)
{
LIST_ENTRY *ListEntry;
SMI_ENTRY *SmiEntry;
UINTN Size;
Size = 0;
ListEntry = SmiEntryList;
for (ListEntry = ListEntry->ForwardLink;
ListEntry != SmiEntryList;
ListEntry = ListEntry->ForwardLink) {
SmiEntry = CR(ListEntry, SMI_ENTRY, AllEntries, SMI_ENTRY_SIGNATURE);
Size += sizeof(SMM_CORE_SMI_DATABASE_STRUCTURE);
Size += GetSmmSmiHandlerSizeOnSmiEntry(SmiEntry);
}
return Size;
}
/**
return SMI handler profile database size.
@return SMI handler profile database size.
**/
UINTN
GetSmiHandlerProfileDatabaseSize (
VOID
)
{
mSmmImageDatabaseSize = GetSmmImageDatabaseSize();
mSmmRootSmiDatabaseSize = GetSmmSmiDatabaseSize(mSmmCoreRootSmiEntryList);
mSmmSmiDatabaseSize = GetSmmSmiDatabaseSize(mSmmCoreSmiEntryList);
mSmmHardwareSmiDatabaseSize = GetSmmSmiDatabaseSize(mSmmCoreHardwareSmiEntryList);
return mSmmImageDatabaseSize + mSmmSmiDatabaseSize + mSmmRootSmiDatabaseSize + mSmmHardwareSmiDatabaseSize;
}
/**
get SMM image database.
@param Data The buffer to hold SMM image database
@param ExpectedSize The expected size of the SMM image database
@return SMM image data base size.
**/
UINTN
GetSmmImageDatabaseData (
IN OUT VOID *Data,
IN UINTN ExpectedSize
)
{
SMM_CORE_IMAGE_DATABASE_STRUCTURE *ImageStruct;
UINTN Size;
UINTN Index;
ImageStruct = Data;
Size = 0;
for (Index = 0; Index < mImageStructCount; Index++) {
if (Size >= ExpectedSize) {
return 0;
}
if (sizeof(SMM_CORE_IMAGE_DATABASE_STRUCTURE) + GET_OCCUPIED_SIZE (mImageStruct[Index].PdbStringSize, sizeof (UINT64)) > ExpectedSize - Size) {
return 0;
}
ImageStruct->Header.Signature = SMM_CORE_IMAGE_DATABASE_SIGNATURE;
ImageStruct->Header.Length = (UINT32)(sizeof(SMM_CORE_IMAGE_DATABASE_STRUCTURE) + GET_OCCUPIED_SIZE (mImageStruct[Index].PdbStringSize, sizeof (UINT64)));
ImageStruct->Header.Revision = SMM_CORE_IMAGE_DATABASE_REVISION;
CopyGuid(&ImageStruct->FileGuid, &mImageStruct[Index].FileGuid);
ImageStruct->ImageRef = mImageStruct[Index].ImageRef;
ImageStruct->EntryPoint = mImageStruct[Index].EntryPoint;
ImageStruct->ImageBase = mImageStruct[Index].ImageBase;
ImageStruct->ImageSize = mImageStruct[Index].ImageSize;
if (mImageStruct[Index].PdbStringSize != 0) {
ImageStruct->PdbStringOffset = sizeof(SMM_CORE_IMAGE_DATABASE_STRUCTURE);
CopyMem ((VOID *)((UINTN)ImageStruct + ImageStruct->PdbStringOffset), mImageStruct[Index].PdbString, mImageStruct[Index].PdbStringSize);
} else {
ImageStruct->PdbStringOffset = 0;
}
ImageStruct = (SMM_CORE_IMAGE_DATABASE_STRUCTURE *)((UINTN)ImageStruct + ImageStruct->Header.Length);
Size += sizeof(SMM_CORE_IMAGE_DATABASE_STRUCTURE) + GET_OCCUPIED_SIZE (mImageStruct[Index].PdbStringSize, sizeof (UINT64));
}
if (ExpectedSize != Size) {
return 0;
}
return Size;
}
/**
get all SMI handler data associated with SmiEntry.
@param SmiEntry SMI entry.
@param Data The buffer to hold all SMI handler data
@param MaxSize The max size of the SMM image database
@param Count The count of the SMI handler.
@return SMM image data base size.
**/
UINTN
GetSmmSmiHandlerDataOnSmiEntry(
IN SMI_ENTRY *SmiEntry,
IN OUT VOID *Data,
IN UINTN MaxSize,
OUT UINT32 *Count
)
{
SMM_CORE_SMI_HANDLER_STRUCTURE *SmiHandlerStruct;
LIST_ENTRY *ListEntry;
SMI_HANDLER *SmiHandler;
UINTN Size;
SmiHandlerStruct = Data;
Size = 0;
*Count = 0;
ListEntry = &SmiEntry->SmiHandlers;
for (ListEntry = ListEntry->ForwardLink;
ListEntry != &SmiEntry->SmiHandlers;
ListEntry = ListEntry->ForwardLink) {
SmiHandler = CR(ListEntry, SMI_HANDLER, Link, SMI_HANDLER_SIGNATURE);
if (Size >= MaxSize) {
*Count = 0;
return 0;
}
if (sizeof(SMM_CORE_SMI_HANDLER_STRUCTURE) + GET_OCCUPIED_SIZE (SmiHandler->ContextSize, sizeof (UINT64)) > MaxSize - Size) {
*Count = 0;
return 0;
}
SmiHandlerStruct->Length = (UINT32)(sizeof(SMM_CORE_SMI_HANDLER_STRUCTURE) + GET_OCCUPIED_SIZE (SmiHandler->ContextSize, sizeof (UINT64)));
SmiHandlerStruct->CallerAddr = (UINTN)SmiHandler->CallerAddr;
SmiHandlerStruct->Handler = (UINTN)SmiHandler->Handler;
SmiHandlerStruct->ImageRef = AddressToImageRef((UINTN)SmiHandler->Handler);
SmiHandlerStruct->ContextBufferSize = (UINT32)SmiHandler->ContextSize;
if (SmiHandler->ContextSize != 0) {
SmiHandlerStruct->ContextBufferOffset = sizeof(SMM_CORE_SMI_HANDLER_STRUCTURE);
CopyMem ((UINT8 *)SmiHandlerStruct + SmiHandlerStruct->ContextBufferOffset, SmiHandler->Context, SmiHandler->ContextSize);
} else {
SmiHandlerStruct->ContextBufferOffset = 0;
}
Size += sizeof(SMM_CORE_SMI_HANDLER_STRUCTURE) + GET_OCCUPIED_SIZE (SmiHandler->ContextSize, sizeof (UINT64));
SmiHandlerStruct = (SMM_CORE_SMI_HANDLER_STRUCTURE *)((UINTN)SmiHandlerStruct + SmiHandlerStruct->Length);
*Count = *Count + 1;
}
return Size;
}
/**
get all SMI handler database on the SMI entry list.
@param SmiEntryList a list of SMI entry.
@param HandlerCategory The handler category
@param Data The buffer to hold all SMI handler database
@param ExpectedSize The expected size of the SMM image database
@return all SMI database size on the SMI entry list.
**/
UINTN
GetSmmSmiDatabaseData(
IN LIST_ENTRY *SmiEntryList,
IN UINT32 HandlerCategory,
IN OUT VOID *Data,
IN UINTN ExpectedSize
)
{
SMM_CORE_SMI_DATABASE_STRUCTURE *SmiStruct;
LIST_ENTRY *ListEntry;
SMI_ENTRY *SmiEntry;
UINTN Size;
UINTN SmiHandlerSize;
UINT32 SmiHandlerCount;
SmiStruct = Data;
Size = 0;
ListEntry = SmiEntryList;
for (ListEntry = ListEntry->ForwardLink;
ListEntry != SmiEntryList;
ListEntry = ListEntry->ForwardLink) {
SmiEntry = CR(ListEntry, SMI_ENTRY, AllEntries, SMI_ENTRY_SIGNATURE);
if (Size >= ExpectedSize) {
return 0;
}
if (sizeof(SMM_CORE_SMI_DATABASE_STRUCTURE) > ExpectedSize - Size) {
return 0;
}
SmiStruct->Header.Signature = SMM_CORE_SMI_DATABASE_SIGNATURE;
SmiStruct->Header.Length = sizeof(SMM_CORE_SMI_DATABASE_STRUCTURE);
SmiStruct->Header.Revision = SMM_CORE_SMI_DATABASE_REVISION;
SmiStruct->HandlerCategory = HandlerCategory;
CopyGuid(&SmiStruct->HandlerType, &SmiEntry->HandlerType);
Size += sizeof(SMM_CORE_SMI_DATABASE_STRUCTURE);
SmiHandlerSize = GetSmmSmiHandlerDataOnSmiEntry(SmiEntry, (UINT8 *)SmiStruct + SmiStruct->Header.Length, ExpectedSize - Size, &SmiHandlerCount);
SmiStruct->HandlerCount = SmiHandlerCount;
Size += SmiHandlerSize;
SmiStruct->Header.Length += (UINT32)SmiHandlerSize;
SmiStruct = (VOID *)((UINTN)SmiStruct + SmiStruct->Header.Length);
}
if (ExpectedSize != Size) {
return 0;
}
return Size;
}
/**
Get SMI handler profile database.
@param Data the buffer to hold SMI handler profile database
@retval EFI_SUCCESS the database is got.
@retval EFI_INVALID_PARAMETER the database size mismatch.
**/
EFI_STATUS
GetSmiHandlerProfileDatabaseData(
IN OUT VOID *Data
)
{
UINTN SmmImageDatabaseSize;
UINTN SmmSmiDatabaseSize;
UINTN SmmRootSmiDatabaseSize;
UINTN SmmHardwareSmiDatabaseSize;
DEBUG((DEBUG_VERBOSE, "GetSmiHandlerProfileDatabaseData\n"));
SmmImageDatabaseSize = GetSmmImageDatabaseData(Data, mSmmImageDatabaseSize);
if (SmmImageDatabaseSize != mSmmImageDatabaseSize) {
DEBUG((DEBUG_ERROR, "GetSmiHandlerProfileDatabaseData - SmmImageDatabaseSize mismatch!\n"));
return EFI_INVALID_PARAMETER;
}
SmmRootSmiDatabaseSize = GetSmmSmiDatabaseData(mSmmCoreRootSmiEntryList, SmmCoreSmiHandlerCategoryRootHandler, (UINT8 *)Data + SmmImageDatabaseSize, mSmmRootSmiDatabaseSize);
if (SmmRootSmiDatabaseSize != mSmmRootSmiDatabaseSize) {
DEBUG((DEBUG_ERROR, "GetSmiHandlerProfileDatabaseData - SmmRootSmiDatabaseSize mismatch!\n"));
return EFI_INVALID_PARAMETER;
}
SmmSmiDatabaseSize = GetSmmSmiDatabaseData(mSmmCoreSmiEntryList, SmmCoreSmiHandlerCategoryGuidHandler, (UINT8 *)Data + SmmImageDatabaseSize + mSmmRootSmiDatabaseSize, mSmmSmiDatabaseSize);
if (SmmSmiDatabaseSize != mSmmSmiDatabaseSize) {
DEBUG((DEBUG_ERROR, "GetSmiHandlerProfileDatabaseData - SmmSmiDatabaseSize mismatch!\n"));
return EFI_INVALID_PARAMETER;
}
SmmHardwareSmiDatabaseSize = GetSmmSmiDatabaseData(mSmmCoreHardwareSmiEntryList, SmmCoreSmiHandlerCategoryHardwareHandler, (UINT8 *)Data + SmmImageDatabaseSize + SmmRootSmiDatabaseSize + SmmSmiDatabaseSize, mSmmHardwareSmiDatabaseSize);
if (SmmHardwareSmiDatabaseSize != mSmmHardwareSmiDatabaseSize) {
DEBUG((DEBUG_ERROR, "GetSmiHandlerProfileDatabaseData - SmmHardwareSmiDatabaseSize mismatch!\n"));
return EFI_INVALID_PARAMETER;
}
return EFI_SUCCESS;
}
/**
build SMI handler profile database.
**/
VOID
BuildSmiHandlerProfileDatabase(
VOID
)
{
EFI_STATUS Status;
mSmiHandlerProfileDatabaseSize = GetSmiHandlerProfileDatabaseSize();
mSmiHandlerProfileDatabase = AllocatePool(mSmiHandlerProfileDatabaseSize);
if (mSmiHandlerProfileDatabase == NULL) {
return;
}
Status = GetSmiHandlerProfileDatabaseData(mSmiHandlerProfileDatabase);
if (EFI_ERROR(Status)) {
FreePool(mSmiHandlerProfileDatabase);
mSmiHandlerProfileDatabase = NULL;
}
}
/**
Copy SMI handler profile data.
@param DataBuffer The buffer to hold SMI handler profile data.
@param DataSize On input, data buffer size.
On output, actual data buffer size copied.
@param DataOffset On input, data buffer offset to copy.
On output, next time data buffer offset to copy.
**/
VOID
SmiHandlerProfileCopyData(
OUT VOID *DataBuffer,
IN OUT UINT64 *DataSize,
IN OUT UINT64 *DataOffset
)
{
if (*DataOffset >= mSmiHandlerProfileDatabaseSize) {
*DataOffset = mSmiHandlerProfileDatabaseSize;
return;
}
if (mSmiHandlerProfileDatabaseSize - *DataOffset < *DataSize) {
*DataSize = mSmiHandlerProfileDatabaseSize - *DataOffset;
}
CopyMem(
DataBuffer,
(UINT8 *)mSmiHandlerProfileDatabase + *DataOffset,
(UINTN)*DataSize
);
*DataOffset = *DataOffset + *DataSize;
}
/**
SMI handler profile handler to get info.
@param SmiHandlerProfileParameterGetInfo The parameter of SMI handler profile get info.
**/
VOID
SmiHandlerProfileHandlerGetInfo(
IN SMI_HANDLER_PROFILE_PARAMETER_GET_INFO *SmiHandlerProfileParameterGetInfo
)
{
BOOLEAN SmiHandlerProfileRecordingStatus;
SmiHandlerProfileRecordingStatus = mSmiHandlerProfileRecordingStatus;
mSmiHandlerProfileRecordingStatus = FALSE;
SmiHandlerProfileParameterGetInfo->DataSize = mSmiHandlerProfileDatabaseSize;
SmiHandlerProfileParameterGetInfo->Header.ReturnStatus = 0;
mSmiHandlerProfileRecordingStatus = SmiHandlerProfileRecordingStatus;
}
/**
SMI handler profile handler to get data by offset.
@param SmiHandlerProfileParameterGetDataByOffset The parameter of SMI handler profile get data by offset.
**/
VOID
SmiHandlerProfileHandlerGetDataByOffset(
IN SMI_HANDLER_PROFILE_PARAMETER_GET_DATA_BY_OFFSET *SmiHandlerProfileParameterGetDataByOffset
)
{
SMI_HANDLER_PROFILE_PARAMETER_GET_DATA_BY_OFFSET SmiHandlerProfileGetDataByOffset;
BOOLEAN SmiHandlerProfileRecordingStatus;
SmiHandlerProfileRecordingStatus = mSmiHandlerProfileRecordingStatus;
mSmiHandlerProfileRecordingStatus = FALSE;
CopyMem(&SmiHandlerProfileGetDataByOffset, SmiHandlerProfileParameterGetDataByOffset, sizeof(SmiHandlerProfileGetDataByOffset));
//
// Sanity check
//
if (!SmmIsBufferOutsideSmmValid((UINTN)SmiHandlerProfileGetDataByOffset.DataBuffer, (UINTN)SmiHandlerProfileGetDataByOffset.DataSize)) {
DEBUG((DEBUG_ERROR, "SmiHandlerProfileHandlerGetDataByOffset: SMI handler profile get data in SMRAM or overflow!\n"));
SmiHandlerProfileParameterGetDataByOffset->Header.ReturnStatus = (UINT64)(INT64)(INTN)EFI_ACCESS_DENIED;
goto Done;
}
SmiHandlerProfileCopyData((VOID *)(UINTN)SmiHandlerProfileGetDataByOffset.DataBuffer, &SmiHandlerProfileGetDataByOffset.DataSize, &SmiHandlerProfileGetDataByOffset.DataOffset);
CopyMem(SmiHandlerProfileParameterGetDataByOffset, &SmiHandlerProfileGetDataByOffset, sizeof(SmiHandlerProfileGetDataByOffset));
SmiHandlerProfileParameterGetDataByOffset->Header.ReturnStatus = 0;
Done:
mSmiHandlerProfileRecordingStatus = SmiHandlerProfileRecordingStatus;
}
/**
Dispatch function for a Software SMI handler.
Caution: This function may receive untrusted input.
Communicate buffer and buffer size are external input, so this function will do basic validation.
@param DispatchHandle The unique handle assigned to this handler by SmiHandlerRegister().
@param Context Points to an optional handler context which was specified when the
handler was registered.
@param CommBuffer A pointer to a collection of data in memory that will
be conveyed from a non-SMM environment into an SMM environment.
@param CommBufferSize The size of the CommBuffer.
@retval EFI_SUCCESS Command is handled successfully.
**/
EFI_STATUS
EFIAPI
SmiHandlerProfileHandler(
IN EFI_HANDLE DispatchHandle,
IN CONST VOID *Context OPTIONAL,
IN OUT VOID *CommBuffer OPTIONAL,
IN OUT UINTN *CommBufferSize OPTIONAL
)
{
SMI_HANDLER_PROFILE_PARAMETER_HEADER *SmiHandlerProfileParameterHeader;
UINTN TempCommBufferSize;
DEBUG((DEBUG_ERROR, "SmiHandlerProfileHandler Enter\n"));
if (mSmiHandlerProfileDatabase == NULL) {
return EFI_SUCCESS;
}
//
// If input is invalid, stop processing this SMI
//
if (CommBuffer == NULL || CommBufferSize == NULL) {
return EFI_SUCCESS;
}
TempCommBufferSize = *CommBufferSize;
if (TempCommBufferSize < sizeof(SMI_HANDLER_PROFILE_PARAMETER_HEADER)) {
DEBUG((DEBUG_ERROR, "SmiHandlerProfileHandler: SMM communication buffer size invalid!\n"));
return EFI_SUCCESS;
}
if (!SmmIsBufferOutsideSmmValid((UINTN)CommBuffer, TempCommBufferSize)) {
DEBUG((DEBUG_ERROR, "SmiHandlerProfileHandler: SMM communication buffer in SMRAM or overflow!\n"));
return EFI_SUCCESS;
}
SmiHandlerProfileParameterHeader = (SMI_HANDLER_PROFILE_PARAMETER_HEADER *)((UINTN)CommBuffer);
SmiHandlerProfileParameterHeader->ReturnStatus = (UINT64)-1;
switch (SmiHandlerProfileParameterHeader->Command) {
case SMI_HANDLER_PROFILE_COMMAND_GET_INFO:
DEBUG((DEBUG_ERROR, "SmiHandlerProfileHandlerGetInfo\n"));
if (TempCommBufferSize != sizeof(SMI_HANDLER_PROFILE_PARAMETER_GET_INFO)) {
DEBUG((DEBUG_ERROR, "SmiHandlerProfileHandler: SMM communication buffer size invalid!\n"));
return EFI_SUCCESS;
}
SmiHandlerProfileHandlerGetInfo((SMI_HANDLER_PROFILE_PARAMETER_GET_INFO *)(UINTN)CommBuffer);
break;
case SMI_HANDLER_PROFILE_COMMAND_GET_DATA_BY_OFFSET:
DEBUG((DEBUG_ERROR, "SmiHandlerProfileHandlerGetDataByOffset\n"));
if (TempCommBufferSize != sizeof(SMI_HANDLER_PROFILE_PARAMETER_GET_DATA_BY_OFFSET)) {
DEBUG((DEBUG_ERROR, "SmiHandlerProfileHandler: SMM communication buffer size invalid!\n"));
return EFI_SUCCESS;
}
SmiHandlerProfileHandlerGetDataByOffset((SMI_HANDLER_PROFILE_PARAMETER_GET_DATA_BY_OFFSET *)(UINTN)CommBuffer);
break;
default:
break;
}
DEBUG((DEBUG_ERROR, "SmiHandlerProfileHandler Exit\n"));
return EFI_SUCCESS;
}
/**
Register SMI handler profile handler.
**/
VOID
RegisterSmiHandlerProfileHandler (
VOID
)
{
EFI_STATUS Status;
EFI_HANDLE DispatchHandle;
Status = gSmst->SmiHandlerRegister (
SmiHandlerProfileHandler,
&gSmiHandlerProfileGuid,
&DispatchHandle
);
ASSERT_EFI_ERROR (Status);
BuildSmiHandlerProfileDatabase();
}
/**
Finds the SMI entry for the requested handler type.
@param HandlerType The type of the interrupt
@param Create Create a new entry if not found
@return SMI entry
**/
SMI_ENTRY *
SmmCoreFindHardwareSmiEntry (
IN EFI_GUID *HandlerType,
IN BOOLEAN Create
)
{
LIST_ENTRY *Link;
SMI_ENTRY *Item;
SMI_ENTRY *SmiEntry;
//
// Search the SMI entry list for the matching GUID
//
SmiEntry = NULL;
for (Link = mHardwareSmiEntryList.ForwardLink;
Link != &mHardwareSmiEntryList;
Link = Link->ForwardLink) {
Item = CR (Link, SMI_ENTRY, AllEntries, SMI_ENTRY_SIGNATURE);
if (CompareGuid (&Item->HandlerType, HandlerType)) {
//
// This is the SMI entry
//
SmiEntry = Item;
break;
}
}
//
// If the protocol entry was not found and Create is TRUE, then
// allocate a new entry
//
if ((SmiEntry == NULL) && Create) {
SmiEntry = AllocatePool (sizeof(SMI_ENTRY));
if (SmiEntry != NULL) {
//
// Initialize new SMI entry structure
//
SmiEntry->Signature = SMI_ENTRY_SIGNATURE;
CopyGuid ((VOID *)&SmiEntry->HandlerType, HandlerType);
InitializeListHead (&SmiEntry->SmiHandlers);
//
// Add it to SMI entry list
//
InsertTailList (&mHardwareSmiEntryList, &SmiEntry->AllEntries);
}
}
return SmiEntry;
}
/**
Convert EFI_SMM_USB_REGISTER_CONTEXT to SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT.
@param UsbContext A pointer to EFI_SMM_USB_REGISTER_CONTEXT
@param UsbContextSize The size of EFI_SMM_USB_REGISTER_CONTEXT in bytes
@param SmiHandlerUsbContextSize The size of SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT in bytes
@return SmiHandlerUsbContext A pointer to SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT
**/
SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT *
ConvertSmiHandlerUsbContext (
IN EFI_SMM_USB_REGISTER_CONTEXT *UsbContext,
IN UINTN UsbContextSize,
OUT UINTN *SmiHandlerUsbContextSize
)
{
UINTN DevicePathSize;
SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT *SmiHandlerUsbContext;
ASSERT (UsbContextSize == sizeof(EFI_SMM_USB_REGISTER_CONTEXT));
DevicePathSize = GetDevicePathSize (UsbContext->Device);
SmiHandlerUsbContext = AllocatePool (sizeof (SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT) + DevicePathSize);
if (SmiHandlerUsbContext == NULL) {
*SmiHandlerUsbContextSize = 0;
return NULL;
}
SmiHandlerUsbContext->Type = UsbContext->Type;
SmiHandlerUsbContext->DevicePathSize = (UINT32)DevicePathSize;
CopyMem (SmiHandlerUsbContext + 1, UsbContext->Device, DevicePathSize);
*SmiHandlerUsbContextSize = sizeof (SMI_HANDLER_PROFILE_USB_REGISTER_CONTEXT) + DevicePathSize;
return SmiHandlerUsbContext;
}
/**
Convert EFI_SMM_SW_REGISTER_CONTEXT to SMI_HANDLER_PROFILE_SW_REGISTER_CONTEXT.
@param SwContext A pointer to EFI_SMM_SW_REGISTER_CONTEXT
@param SwContextSize The size of EFI_SMM_SW_REGISTER_CONTEXT in bytes
@param SmiHandlerSwContextSize The size of SMI_HANDLER_PROFILE_SW_REGISTER_CONTEXT in bytes
@return SmiHandlerSwContext A pointer to SMI_HANDLER_PROFILE_SW_REGISTER_CONTEXT
**/
SMI_HANDLER_PROFILE_SW_REGISTER_CONTEXT *
ConvertSmiHandlerSwContext (
IN EFI_SMM_SW_REGISTER_CONTEXT *SwContext,
IN UINTN SwContextSize,
OUT UINTN *SmiHandlerSwContextSize
)
{
SMI_HANDLER_PROFILE_SW_REGISTER_CONTEXT *SmiHandlerSwContext;
ASSERT (SwContextSize == sizeof(EFI_SMM_SW_REGISTER_CONTEXT));
SmiHandlerSwContext = AllocatePool (sizeof (SMI_HANDLER_PROFILE_SW_REGISTER_CONTEXT));
if (SmiHandlerSwContext == NULL) {
*SmiHandlerSwContextSize = 0;
return NULL;
}
SmiHandlerSwContext->SwSmiInputValue = SwContext->SwSmiInputValue;
*SmiHandlerSwContextSize = sizeof (SMI_HANDLER_PROFILE_SW_REGISTER_CONTEXT);
return SmiHandlerSwContext;
}
/**
This function is called by SmmChildDispatcher module to report
a new SMI handler is registered, to SmmCore.
@param This The protocol instance
@param HandlerGuid The GUID to identify the type of the handler.
For the SmmChildDispatch protocol, the HandlerGuid
must be the GUID of SmmChildDispatch protocol.
@param Handler The SMI handler.
@param CallerAddress The address of the module who registers the SMI handler.
@param Context The context of the SMI handler.
For the SmmChildDispatch protocol, the Context
must match the one defined for SmmChildDispatch protocol.
@param ContextSize The size of the context in bytes.
For the SmmChildDispatch protocol, the Context
must match the one defined for SmmChildDispatch protocol.
@retval EFI_SUCCESS The information is recorded.
@retval EFI_OUT_OF_RESOURCES There is no enough resource to record the information.
**/
EFI_STATUS
EFIAPI
SmiHandlerProfileRegisterHandler (
IN SMI_HANDLER_PROFILE_PROTOCOL *This,
IN EFI_GUID *HandlerGuid,
IN EFI_SMM_HANDLER_ENTRY_POINT2 Handler,
IN PHYSICAL_ADDRESS CallerAddress,
IN VOID *Context, OPTIONAL
IN UINTN ContextSize OPTIONAL
)
{
SMI_HANDLER *SmiHandler;
SMI_ENTRY *SmiEntry;
LIST_ENTRY *List;
if (((ContextSize == 0) && (Context != NULL)) ||
((ContextSize != 0) && (Context == NULL))) {
return EFI_INVALID_PARAMETER;
}
SmiHandler = AllocateZeroPool (sizeof (SMI_HANDLER));
if (SmiHandler == NULL) {
return EFI_OUT_OF_RESOURCES;
}
SmiHandler->Signature = SMI_HANDLER_SIGNATURE;
SmiHandler->Handler = Handler;
SmiHandler->CallerAddr = (UINTN)CallerAddress;
SmiHandler->Context = Context;
SmiHandler->ContextSize = ContextSize;
if (Context != NULL) {
if (CompareGuid (HandlerGuid, &gEfiSmmUsbDispatch2ProtocolGuid)) {
SmiHandler->Context = ConvertSmiHandlerUsbContext (Context, ContextSize, &SmiHandler->ContextSize);
} else if (CompareGuid (HandlerGuid, &gEfiSmmSwDispatch2ProtocolGuid)) {
SmiHandler->Context = ConvertSmiHandlerSwContext (Context, ContextSize, &SmiHandler->ContextSize);
} else {
SmiHandler->Context = AllocateCopyPool (ContextSize, Context);
}
}
if (SmiHandler->Context == NULL) {
SmiHandler->ContextSize = 0;
}
SmiEntry = SmmCoreFindHardwareSmiEntry (HandlerGuid, TRUE);
if (SmiEntry == NULL) {
if (SmiHandler->Context != NULL) {
FreePool (SmiHandler->Context);
}
FreePool (SmiHandler);
return EFI_OUT_OF_RESOURCES;
}
List = &SmiEntry->SmiHandlers;
SmiHandler->SmiEntry = SmiEntry;
InsertTailList (List, &SmiHandler->Link);
return EFI_SUCCESS;
}
/**
This function is called by SmmChildDispatcher module to report
an existing SMI handler is unregistered, to SmmCore.
@param This The protocol instance
@param HandlerGuid The GUID to identify the type of the handler.
For the SmmChildDispatch protocol, the HandlerGuid
must be the GUID of SmmChildDispatch protocol.
@param Handler The SMI handler.
@param Context The context of the SMI handler.
If it is NOT NULL, it will be used to check what is registered.
@param ContextSize The size of the context in bytes.
If Context is NOT NULL, it will be used to check what is registered.
@retval EFI_SUCCESS The original record is removed.
@retval EFI_NOT_FOUND There is no record for the HandlerGuid and handler.
**/
EFI_STATUS
EFIAPI
SmiHandlerProfileUnregisterHandler (
IN SMI_HANDLER_PROFILE_PROTOCOL *This,
IN EFI_GUID *HandlerGuid,
IN EFI_SMM_HANDLER_ENTRY_POINT2 Handler,
IN VOID *Context, OPTIONAL
IN UINTN ContextSize OPTIONAL
)
{
LIST_ENTRY *Link;
LIST_ENTRY *Head;
SMI_HANDLER *SmiHandler;
SMI_ENTRY *SmiEntry;
SMI_HANDLER *TargetSmiHandler;
VOID *SearchContext;
UINTN SearchContextSize;
if (((ContextSize == 0) && (Context != NULL)) ||
((ContextSize != 0) && (Context == NULL))) {
return EFI_INVALID_PARAMETER;
}
SmiEntry = SmmCoreFindHardwareSmiEntry (HandlerGuid, FALSE);
if (SmiEntry == NULL) {
return EFI_NOT_FOUND;
}
SearchContext = Context;
SearchContextSize = ContextSize;
if (Context != NULL) {
if (CompareGuid (HandlerGuid, &gEfiSmmUsbDispatch2ProtocolGuid)) {
SearchContext = ConvertSmiHandlerUsbContext (Context, ContextSize, &SearchContextSize);
} else if (CompareGuid (HandlerGuid, &gEfiSmmSwDispatch2ProtocolGuid)) {
SearchContext = ConvertSmiHandlerSwContext (Context, ContextSize, &SearchContextSize);
}
}
TargetSmiHandler = NULL;
Head = &SmiEntry->SmiHandlers;
for (Link = Head->ForwardLink; Link != Head; Link = Link->ForwardLink) {
SmiHandler = CR (Link, SMI_HANDLER, Link, SMI_HANDLER_SIGNATURE);
if (SmiHandler->Handler == Handler) {
if ((SearchContext == NULL) ||
((SearchContextSize == SmiHandler->ContextSize) && (CompareMem (SearchContext, SmiHandler->Context, SearchContextSize) == 0))) {
TargetSmiHandler = SmiHandler;
break;
}
}
}
if (SearchContext != NULL) {
if (CompareGuid (HandlerGuid, &gEfiSmmUsbDispatch2ProtocolGuid)) {
FreePool (SearchContext);
}
}
if (TargetSmiHandler == NULL) {
return EFI_NOT_FOUND;
}
SmiHandler = TargetSmiHandler;
RemoveEntryList (&SmiHandler->Link);
if (SmiHandler->Context != NULL) {
FreePool (SmiHandler->Context);
}
FreePool (SmiHandler);
if (IsListEmpty (&SmiEntry->SmiHandlers)) {
RemoveEntryList (&SmiEntry->AllEntries);
FreePool (SmiEntry);
}
return EFI_SUCCESS;
}
/**
Initialize SmiHandler profile feature.
**/
VOID
SmmCoreInitializeSmiHandlerProfile (
VOID
)
{
EFI_STATUS Status;
VOID *Registration;
EFI_HANDLE Handle;
if ((PcdGet8 (PcdSmiHandlerProfilePropertyMask) & 0x1) != 0) {
InsertTailList (&mRootSmiEntryList, &mRootSmiEntry.AllEntries);
Status = gSmst->SmmRegisterProtocolNotify (
&gEfiSmmReadyToLockProtocolGuid,
SmmReadyToLockInSmiHandlerProfile,
&Registration
);
ASSERT_EFI_ERROR (Status);
Handle = NULL;
Status = gSmst->SmmInstallProtocolInterface (
&Handle,
&gSmiHandlerProfileGuid,
EFI_NATIVE_INTERFACE,
&mSmiHandlerProfile
);
ASSERT_EFI_ERROR (Status);
}
}
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