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|
//**********************************************************************
//**********************************************************************
//** **
//** (C)Copyright 1985-2009, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Pkwy, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//**********************************************************************
//**********************************************************************
//**********************************************************************
// $Header: /Alaska/SOURCE/Modules/Legacy Serial Redirection/LegacySmmSredir.c 6 12/08/14 3:36a Anbuprakashp $
//
// $Revision: 6 $
//
// $Date: 12/08/14 3:36a $
//****************************************************************************
//****************************************************************************
// Revision History
// ----------------
// $Log: /Alaska/SOURCE/Modules/Legacy Serial Redirection/LegacySmmSredir.c $
//
// 6 12/08/14 3:36a Anbuprakashp
// [TAG] EIP192305
// [Category] Improvement
// [Description] Replacing SmmGetMemoryType usage in LegacySredir module
// with AmiBufferValidationLib
// [Files] LegacySredir.mak, LegacySmmSredir.c, LegacySredir_Setup.C
//
// 5 6/25/13 4:40a Rameshr
// [TAG] EIP125655
// [Category] Improvement
// [Description] MMIO Address validated before reading or writing to the
// MMIO region in the SW SMI handler
// [Files] LegacySmmSredir.c, LegacySredir.dxs
//
// 4 4/10/12 12:49a Rameshr
// [TAG] EIP84345
// [Category] Improvement
// [Description] Error checking and SMM dependency added
// [Files] LegacySmmSredir.c, LegacySredir.dxs
//
// 3 6/17/11 4:41a Rameshr
// [TAG] - EIP 47188
// [Category]- IMPROVEMENT
// [Description]- MMIO COM device access width SDL token support added
// [Files] - legacysredir.c, LegacySredirSmm.c, LegacySredir_setup.c
//
// 2 9/24/10 1:37a Rameshr
// [TAG] - EIP 44133
// [Category]- BUG FIX & IMPROVEMENT
// [Severity]- Major
// [Symptom] - Flowcontrol and Terminal type is not working in Legacy
// console redirection
// [RootCause] - Baud rate value overwrites the Flowcontrol and Terminal
// Type fields.
// [Solution] - BaudRate programming done in EFI driver. So removed the
// baud rate value passing into Sredir.bin
// MMIO com device width added based on SDL token.
// [Files] - LegacySmmSredir.c , Legacysredir.c, Legacysredir.sdl
//
// 1 3/05/10 4:17a Rameshr
// Initial Check-in
//
// MMIO COM device support added.
// EIP 33847
//
//
//****************************************************************************
//****************************************************************************
//<AMI_FHDR_START>
//****************************************************************************
//
// Name: LegacySmmSredir.C
//
// Description: Legacy console redirection SMM support
//****************************************************************************
//<AMI_FHDR_END>
#include "token.h"
#include "Protocol/LegacySredir.h"
#include "AmiDxeLib.h"
#if defined(PI_SPECIFICATION_VERSION)&&(PI_SPECIFICATION_VERSION>=0x0001000A)&&(CORE_COMBINED_VERSION>=0x4028B)
#include <Protocol\SmmCpu.h>
#include <Protocol\SmmBase2.h>
#include <Protocol\SmmSwDispatch2.h>
#else
#include <Protocol\SmmBase.h>
#include <Protocol\SmmSwDispatch.h>
#endif
#include <Protocol\DevicePath.h>
#include <Protocol\LoadedImage.h>
#include <AmiSmm.h>
#include <AmiBufferValidationLib.h>
#if defined(PI_SPECIFICATION_VERSION)&&(PI_SPECIFICATION_VERSION>=0x0001000A)&&(CORE_COMBINED_VERSION>=0x4028B)
EFI_SMM_BASE2_PROTOCOL *gSmmBase2;
EFI_SMM_SYSTEM_TABLE2 *pSmst2;
EFI_GUID gEfiSmmCpuProtocolGuid = EFI_SMM_CPU_PROTOCOL_GUID;
EFI_SMM_CPU_PROTOCOL *gSmmCpu=NULL;
#define RETURN(status) {return status;}
#else
EFI_GUID gEfiSmmSwDispatchProtocolGuid = EFI_SMM_SW_DISPATCH_PROTOCOL_GUID;
EFI_GUID gSwSmiCpuTriggerGuid = SW_SMI_CPU_TRIGGER_GUID;
#define RETURN(status) {return ;}
#endif
#pragma pack(1)
typedef struct {
UINT32 MMIOAddress;
UINT8 FuncNo;
UINT8 ReadWrite;
UINT8 Offset;
UINT8 Value;
UINT8 Count;
UINT32 BufferAddress;
} SREDIR_INPUT_PARAMETER;
#pragma pack()
EFI_STATUS
LegacySreDirInSmmFunction(
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
);
#if defined(PI_SPECIFICATION_VERSION)&&(PI_SPECIFICATION_VERSION>=0x0001000A)&&(CORE_COMBINED_VERSION >= 0x4028B)
EFI_STATUS LegacySredirSMIHandler (
IN EFI_HANDLE DispatchHandle,
IN CONST VOID *DispatchContext OPTIONAL,
IN OUT VOID *CommBuffer OPTIONAL,
IN OUT UINTN *CommBufferSize OPTIONAL
#else
VOID LegacySredirSMIHandler (
IN EFI_HANDLE DispatchHandle,
IN EFI_SMM_SW_DISPATCH_CONTEXT *DispatchContext
#endif
);
//<AMI_PHDR_START>
//----------------------------------------------------------------------
// Procedure: ReadSerialPort
//
// Description: Read the Data from Serial Port
//
// Input: SREDIR_INPUT_PARAMETER SredirParam
//
// Output:
//
// Returns:
//
//----------------------------------------------------------------------
//<AMI_PHDR_END>
EFI_STATUS ReadSerialPort(
IN OUT SREDIR_INPUT_PARAMETER *SredirParam
)
{
UINT32 TempValue;
#if COM_MMIO_WIDTH == 4
TempValue=*(UINT32*)(SredirParam->MMIOAddress+(SredirParam->Offset*COM_MMIO_WIDTH));
#else
#if COM_MMIO_WIDTH == 2
TempValue=*(UINT16*)(SredirParam->MMIOAddress+(SredirParam->Offset*COM_MMIO_WIDTH));
#else
TempValue=*(UINT8*)(SredirParam->MMIOAddress+(SredirParam->Offset*COM_MMIO_WIDTH));
#endif
#endif
SredirParam->Value=(UINT8)TempValue;
return EFI_SUCCESS;
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------
// Procedure: WriteSerialPort
//
// Description: Write the Data to Serial Port
//
// Input: SREDIR_INPUT_PARAMETER SredirParam
//
// Output:
//
// Returns:
//
//----------------------------------------------------------------------
//<AMI_PHDR_END>
EFI_STATUS WriteSerialPort(
IN OUT SREDIR_INPUT_PARAMETER *SredirParam
)
{
UINT32 TempValue=(UINT32)SredirParam->Value;
#if COM_MMIO_WIDTH == 4
*(UINT32*)(SredirParam->MMIOAddress+(SredirParam->Offset*COM_MMIO_WIDTH))=TempValue;
#else
#if COM_MMIO_WIDTH == 2
*(UINT16*)(SredirParam->MMIOAddress+(SredirParam->Offset*COM_MMIO_WIDTH))=(UINT16)TempValue;
#else
*(UINT8*)(SredirParam->MMIOAddress+(SredirParam->Offset*COM_MMIO_WIDTH))=(UINT8)TempValue;
#endif
#endif
return EFI_SUCCESS;
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------
// Procedure: WriteBufferSerialPort
//
// Description: Write the buffer of data to Serial port
//
// Input: SREDIR_INPUT_PARAMETER SredirParam
//
// Output:
//
// Returns:
//
//----------------------------------------------------------------------
//<AMI_PHDR_END>
EFI_STATUS WriteBufferSerialPort(
IN OUT SREDIR_INPUT_PARAMETER *SredirParam
)
{
UINT8 i;
UINT32 TempValue=0;
UINT8 *DataBuffer=(UINT8*)SredirParam->BufferAddress;
EFI_STATUS Status;
if(SredirParam->Count == 0) {
return EFI_SUCCESS;
}
if( !DataBuffer ) {
return EFI_INVALID_PARAMETER;
}
// Validate Input buffer is valid and not resides in SMRAM region
Status = AmiValidateMemoryBuffer ( (VOID*)DataBuffer, SredirParam->Count );
if( Status != EFI_SUCCESS ) {
RETURN(Status);
}
for(i=0;i<SredirParam->Count;i++) {
TempValue=*DataBuffer;
#if COM_MMIO_WIDTH == 4
*(UINT32*)(SredirParam->MMIOAddress+(SredirParam->Offset*COM_MMIO_WIDTH))=TempValue;
#else
#if COM_MMIO_WIDTH == 2
*(UINT16*)(SredirParam->MMIOAddress+(SredirParam->Offset*COM_MMIO_WIDTH))=(UINT16)TempValue;
#else
*(UINT8*)(SredirParam->MMIOAddress+(SredirParam->Offset*COM_MMIO_WIDTH))=(UINT8)TempValue;
#endif
#endif
DataBuffer++;
}
return EFI_SUCCESS;
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Procedure: LegacySredirSMIHandler
//
// Description: Legacy Serial Redirection Smm handler function
//
// Input: DispatchHandle - EFI Handle
// DispatchContext - Pointer to the EFI_SMM_SW_DISPATCH_CONTEXT
//
// Output:
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
#if defined(PI_SPECIFICATION_VERSION)&&(PI_SPECIFICATION_VERSION>=0x0001000A)&&(CORE_COMBINED_VERSION >= 0x4028B)
EFI_STATUS LegacySredirSMIHandler (
IN EFI_HANDLE DispatchHandle,
IN CONST VOID *DispatchContext OPTIONAL,
IN OUT VOID *CommBuffer OPTIONAL,
IN OUT UINTN *CommBufferSize OPTIONAL
#else
VOID LegacySredirSMIHandler (
IN EFI_HANDLE DispatchHandle,
IN EFI_SMM_SW_DISPATCH_CONTEXT *DispatchContext
#endif
)
{
EFI_STATUS Status = EFI_SUCCESS;
UINT8 Data;
UINT64 pCommBuff;
UINT32 HighBufferAddress = 0;
UINT32 LowBufferAddress = 0;
UINTN Cpu=(UINTN)-1;
SREDIR_INPUT_PARAMETER *SredirParam;
#if PI_SPECIFICATION_VERSION < 0x1000A
EFI_SMM_CPU_SAVE_STATE *pCpuSaveState;
SW_SMI_CPU_TRIGGER *SwSmiCpuTrigger;
UINTN i;
#endif
#if defined(PI_SPECIFICATION_VERSION)&&(PI_SPECIFICATION_VERSION>=0x0001000A)&&(CORE_COMBINED_VERSION >= 0x4028B)
Cpu = ((EFI_SMM_SW_CONTEXT*)CommBuffer)->SwSmiCpuIndex;
//
// Found Invalid CPU number, return
//
if(Cpu == (UINTN)-1) RETURN(Status);
Status = gSmmCpu->ReadSaveState ( gSmmCpu, \
4, \
EFI_SMM_SAVE_STATE_REGISTER_RBX, \
Cpu, \
&LowBufferAddress );
Status = gSmmCpu->ReadSaveState ( gSmmCpu, \
4, \
EFI_SMM_SAVE_STATE_REGISTER_RCX, \
Cpu, \
&HighBufferAddress );
Data = ((EFI_SMM_SW_CONTEXT*)CommBuffer)->CommandPort;
#else
for (i = 0; i < pSmst->NumberOfTableEntries; ++i) {
if (guidcmp(&pSmst->SmmConfigurationTable[i].VendorGuid,&gSwSmiCpuTriggerGuid) == 0) {
break;
}
}
//If found table, check for the CPU that caused the software Smi.
if (i != pSmst->NumberOfTableEntries) {
SwSmiCpuTrigger = pSmst->SmmConfigurationTable[i].VendorTable;
Cpu = SwSmiCpuTrigger->Cpu;
}
//
// Found Invalid CPU number, return
//
if(Cpu == (UINTN) -1) {
RETURN(Status);
}
Data = (UINT8)DispatchContext->SwSmiInputValue;
pCpuSaveState = pSmst->CpuSaveState;
HighBufferAddress = pCpuSaveState[Cpu].Ia32SaveState.ECX;
LowBufferAddress = pCpuSaveState[Cpu].Ia32SaveState.EBX;
#endif
pCommBuff = HighBufferAddress;
pCommBuff = Shl64(pCommBuff, 32);
pCommBuff += LowBufferAddress;
SredirParam =(SREDIR_INPUT_PARAMETER *)pCommBuff;
// Validate COM port register's MMIO address space are valid and not reside in SMRAM region
Status = AmiValidateMmioBuffer( (VOID*)SredirParam->MMIOAddress, 8*COM_MMIO_WIDTH );
if( Status != EFI_SUCCESS ) {
SredirParam->Value=0;
RETURN(Status);
}
switch(SredirParam->FuncNo) {
case 0x1:
ReadSerialPort(SredirParam);
break;
case 0x2:
WriteSerialPort(SredirParam);
break;
case 0x3:
Status = WriteBufferSerialPort(SredirParam);
break;
}
RETURN(Status);
}
//<AMI_PHDR_START>
//---------------------------------------------------------------------------
//
// Name: LegacySreDirInSmmFunction
//
// Description: Legacy Serial Redirection Smm entry point
//
// Input: Standard EFI Image entry - EFI_IMAGE_ENTRY_POINT
// EFI System Table - Pointer to System Table
//
// Output: EFI_STATUS OR EFI_NOT_FOUND
//
//---------------------------------------------------------------------------
//<AMI_PHDR_END>
EFI_STATUS
LegacySreDirInSmmFunction(
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_HANDLE Handle;
EFI_STATUS Status;
#if defined(PI_SPECIFICATION_VERSION)&&(PI_SPECIFICATION_VERSION>=0x0001000A)&&(CORE_COMBINED_VERSION >= 0x4028B)
EFI_SMM_SW_DISPATCH2_PROTOCOL *pSwDispatch = NULL;
EFI_SMM_SW_REGISTER_CONTEXT SwContext;
#else
EFI_SMM_SW_DISPATCH_PROTOCOL *pSwDispatch;
EFI_SMM_SW_DISPATCH_CONTEXT SwContext;
#endif
#if defined(PI_SPECIFICATION_VERSION)&&(PI_SPECIFICATION_VERSION>=0x0001000A)&&(CORE_COMBINED_VERSION >= 0x4028B)
Status = InitAmiSmmLib( ImageHandle, SystemTable );
Status = pBS->LocateProtocol(&gEfiSmmBase2ProtocolGuid, NULL, &gSmmBase2);
if (EFI_ERROR(Status)) {
return Status;
}
//
// We are in SMM, retrieve the pointer to SMM System Table
//
Status = gSmmBase2->GetSmstLocation( gSmmBase2, &pSmst2);
if (EFI_ERROR(Status)) {
return EFI_UNSUPPORTED;
}
Status = pSmst2->SmmLocateProtocol( &gEfiSmmSwDispatch2ProtocolGuid, \
NULL, \
&pSwDispatch );
if(EFI_ERROR(Status)) {
return Status;
}
Status = pSmst2->SmmLocateProtocol(&gEfiSmmCpuProtocolGuid, NULL, &gSmmCpu);
#else
Status = pBS->LocateProtocol(&gEfiSmmSwDispatchProtocolGuid, NULL, &pSwDispatch);
#endif
ASSERT_EFI_ERROR(Status);
if(EFI_ERROR(Status)) {
return Status;
}
InitAmiBufferValidationLib( ImageHandle, SystemTable );
SwContext.SwSmiInputValue = LEGACY_SREDIR_SWSMI;
Status = pSwDispatch->Register(pSwDispatch, LegacySredirSMIHandler, &SwContext, &Handle);
return EFI_SUCCESS;
}
//**********************************************************************
//**********************************************************************
//** **
//** (C)Copyright 1985-2009, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Pkwy, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//**********************************************************************
//**********************************************************************
//**********************************************************************
|
