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/** @file
This module collects performance data for SMM driver boot records and S3 Suspend Performance Record.
This module registers report status code listener to collect performance data
for SMM driver boot records and S3 Suspend Performance Record.
Caution: This module requires additional review when modified.
This driver will have external input - communicate buffer in SMM mode.
This external input must be validated carefully to avoid security issue like
buffer overflow, integer overflow.
FpdtSmiHandler() will receive untrusted input and do basic validation.
Copyright (c) 2011 - 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.
**/
#include <PiSmm.h>
#include <Protocol/SmmReportStatusCodeHandler.h>
#include <Guid/FirmwarePerformance.h>
#include <Library/SmmServicesTableLib.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/TimerLib.h>
#include <Library/LockBoxLib.h>
#include <Library/PcdLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/SynchronizationLib.h>
#include <Library/SmmMemLib.h>
SMM_BOOT_PERFORMANCE_TABLE *mSmmBootPerformanceTable = NULL;
EFI_SMM_RSC_HANDLER_PROTOCOL *mRscHandlerProtocol = NULL;
UINT64 mSuspendStartTime = 0;
BOOLEAN mS3SuspendLockBoxSaved = FALSE;
UINT32 mBootRecordSize = 0;
UINT8 *mBootRecordBuffer = NULL;
SPIN_LOCK mSmmFpdtLock;
BOOLEAN mSmramIsOutOfResource = FALSE;
/**
Report status code listener for SMM. This is used to record the performance
data for S3 Suspend Start and S3 Suspend End in FPDT.
@param[in] CodeType Indicates the type of status code being reported.
@param[in] Value Describes the current status of a hardware or software entity.
This included information about the class and subclass that is used to
classify the entity as well as an operation.
@param[in] Instance The enumeration of a hardware or software entity within
the system. Valid instance numbers start with 1.
@param[in] CallerId This optional parameter may be used to identify the caller.
This parameter allows the status code driver to apply different rules to
different callers.
@param[in] Data This optional parameter may be used to pass additional data.
@retval EFI_SUCCESS Status code is what we expected.
@retval EFI_UNSUPPORTED Status code not supported.
**/
EFI_STATUS
EFIAPI
FpdtStatusCodeListenerSmm (
IN EFI_STATUS_CODE_TYPE CodeType,
IN EFI_STATUS_CODE_VALUE Value,
IN UINT32 Instance,
IN EFI_GUID *CallerId,
IN EFI_STATUS_CODE_DATA *Data
)
{
EFI_STATUS Status;
UINT64 CurrentTime;
EFI_ACPI_5_0_FPDT_S3_SUSPEND_RECORD S3SuspendRecord;
//
// Check whether status code is what we are interested in.
//
if ((CodeType & EFI_STATUS_CODE_TYPE_MASK) != EFI_PROGRESS_CODE) {
return EFI_UNSUPPORTED;
}
//
// Collect one or more Boot records in boot time
//
if (Data != NULL && CompareGuid (&Data->Type, &gEdkiiFpdtExtendedFirmwarePerformanceGuid)) {
AcquireSpinLock (&mSmmFpdtLock);
//
// Get the boot performance data.
//
CopyMem (&mSmmBootPerformanceTable, Data + 1, Data->Size);
mBootRecordBuffer = ((UINT8 *) (mSmmBootPerformanceTable)) + sizeof (SMM_BOOT_PERFORMANCE_TABLE);
ReleaseSpinLock (&mSmmFpdtLock);
return EFI_SUCCESS;
}
if (Data != NULL && CompareGuid (&Data->Type, &gEfiFirmwarePerformanceGuid)) {
DEBUG ((DEBUG_ERROR, "FpdtStatusCodeListenerSmm: Performance data reported through gEfiFirmwarePerformanceGuid will not be collected by FirmwarePerformanceDataTableSmm\n"));
return EFI_UNSUPPORTED;
}
if ((Value != PcdGet32 (PcdProgressCodeS3SuspendStart)) &&
(Value != PcdGet32 (PcdProgressCodeS3SuspendEnd))) {
return EFI_UNSUPPORTED;
}
//
// Retrieve current time.
//
CurrentTime = GetTimeInNanoSecond (GetPerformanceCounter ());
if (Value == PcdGet32 (PcdProgressCodeS3SuspendStart)) {
//
// S3 Suspend started, record the performance data and return.
//
mSuspendStartTime = CurrentTime;
return EFI_SUCCESS;
}
//
// We are going to S3 sleep, record S3 Suspend End performance data.
//
S3SuspendRecord.SuspendStart = mSuspendStartTime;
S3SuspendRecord.SuspendEnd = CurrentTime;
//
// Save S3 suspend performance data to lock box, it will be used by Firmware Performance PEIM.
//
if (!mS3SuspendLockBoxSaved) {
Status = SaveLockBox (
&gEfiFirmwarePerformanceGuid,
&S3SuspendRecord,
sizeof (EFI_ACPI_5_0_FPDT_S3_SUSPEND_RECORD)
);
ASSERT_EFI_ERROR (Status);
mS3SuspendLockBoxSaved = TRUE;
} else {
Status = UpdateLockBox (
&gEfiFirmwarePerformanceGuid,
0,
&S3SuspendRecord,
sizeof (EFI_ACPI_5_0_FPDT_S3_SUSPEND_RECORD)
);
ASSERT_EFI_ERROR (Status);
}
return EFI_SUCCESS;
}
/**
Communication service SMI Handler entry.
This SMI handler provides services for report SMM boot records.
Caution: This function may receive untrusted input.
Communicate buffer and buffer size are external input, so this function will do basic validation.
@param[in] DispatchHandle The unique handle assigned to this handler by SmiHandlerRegister().
@param[in] RegisterContext Points to an optional handler context which was specified when the
handler was registered.
@param[in, out] CommBuffer A pointer to a collection of data in memory that will
be conveyed from a non-SMM environment into an SMM environment.
@param[in, out] CommBufferSize The size of the CommBuffer.
@retval EFI_SUCCESS The interrupt was handled and quiesced. No other handlers
should still be called.
@retval EFI_WARN_INTERRUPT_SOURCE_QUIESCED The interrupt has been quiesced but other handlers should
still be called.
@retval EFI_WARN_INTERRUPT_SOURCE_PENDING The interrupt is still pending and other handlers should still
be called.
@retval EFI_INTERRUPT_PENDING The interrupt could not be quiesced.
**/
EFI_STATUS
EFIAPI
FpdtSmiHandler (
IN EFI_HANDLE DispatchHandle,
IN CONST VOID *RegisterContext,
IN OUT VOID *CommBuffer,
IN OUT UINTN *CommBufferSize
)
{
EFI_STATUS Status;
SMM_BOOT_RECORD_COMMUNICATE *SmmCommData;
UINTN BootRecordOffset;
UINTN BootRecordSize;
VOID *BootRecordData;
UINTN TempCommBufferSize;
//
// If input is invalid, stop processing this SMI
//
if (CommBuffer == NULL || CommBufferSize == NULL) {
return EFI_SUCCESS;
}
TempCommBufferSize = *CommBufferSize;
if(TempCommBufferSize < sizeof (SMM_BOOT_RECORD_COMMUNICATE)) {
return EFI_SUCCESS;
}
if (!SmmIsBufferOutsideSmmValid ((UINTN)CommBuffer, TempCommBufferSize)) {
DEBUG ((EFI_D_ERROR, "FpdtSmiHandler: SMM communication data buffer in SMRAM or overflow!\n"));
return EFI_SUCCESS;
}
SmmCommData = (SMM_BOOT_RECORD_COMMUNICATE*)CommBuffer;
Status = EFI_SUCCESS;
switch (SmmCommData->Function) {
case SMM_FPDT_FUNCTION_GET_BOOT_RECORD_SIZE :
if (mSmmBootPerformanceTable != NULL) {
mBootRecordSize = mSmmBootPerformanceTable->Header.Length - sizeof (SMM_BOOT_PERFORMANCE_TABLE);
}
SmmCommData->BootRecordSize = mBootRecordSize;
break;
case SMM_FPDT_FUNCTION_GET_BOOT_RECORD_DATA :
Status = EFI_UNSUPPORTED;
break;
case SMM_FPDT_FUNCTION_GET_BOOT_RECORD_DATA_BY_OFFSET :
BootRecordOffset = SmmCommData->BootRecordOffset;
BootRecordData = SmmCommData->BootRecordData;
BootRecordSize = SmmCommData->BootRecordSize;
if (BootRecordData == NULL || BootRecordOffset >= mBootRecordSize) {
Status = EFI_INVALID_PARAMETER;
break;
}
//
// Sanity check
//
if (BootRecordSize > mBootRecordSize - BootRecordOffset) {
BootRecordSize = mBootRecordSize - BootRecordOffset;
}
SmmCommData->BootRecordSize = BootRecordSize;
if (!SmmIsBufferOutsideSmmValid ((UINTN)BootRecordData, BootRecordSize)) {
DEBUG ((EFI_D_ERROR, "FpdtSmiHandler: SMM Data buffer in SMRAM or overflow!\n"));
Status = EFI_ACCESS_DENIED;
break;
}
CopyMem (
(UINT8*)BootRecordData,
mBootRecordBuffer + BootRecordOffset,
BootRecordSize
);
break;
default:
Status = EFI_UNSUPPORTED;
}
SmmCommData->ReturnStatus = Status;
return EFI_SUCCESS;
}
/**
The module Entry Point of the Firmware Performance Data Table SMM driver.
@param[in] ImageHandle The firmware allocated handle for the EFI image.
@param[in] SystemTable A pointer to the EFI System Table.
@retval EFI_SUCCESS The entry point is executed successfully.
@retval Other Some error occurs when executing this entry point.
**/
EFI_STATUS
EFIAPI
FirmwarePerformanceSmmEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
EFI_HANDLE Handle;
//
// Initialize spin lock
//
InitializeSpinLock (&mSmmFpdtLock);
//
// Get SMM Report Status Code Handler Protocol.
//
Status = gSmst->SmmLocateProtocol (
&gEfiSmmRscHandlerProtocolGuid,
NULL,
(VOID **) &mRscHandlerProtocol
);
ASSERT_EFI_ERROR (Status);
//
// Register report status code listener for BootRecords and S3 Suspend Start and End.
//
Status = mRscHandlerProtocol->Register (FpdtStatusCodeListenerSmm);
ASSERT_EFI_ERROR (Status);
//
// Register SMI handler.
//
Handle = NULL;
Status = gSmst->SmiHandlerRegister (FpdtSmiHandler, &gEfiFirmwarePerformanceGuid, &Handle);
ASSERT_EFI_ERROR (Status);
return Status;
}
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