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|
/** @file
HECI Smm driver.
Copyright (c) 2007 - 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 <Protocol/SmmAccess2.h>
#include <Protocol/SmmEndOfDxe.h>
#include <Library/SmmServicesTableLib.h>
#include <Library/HeciMsgLib.h>
#include <Library/DebugLib.h>
#include <Library/MemoryAllocationLib.h>
#include <HeciSmm.h>
#include <Private/Library/HeciInitLib.h>
#include <SeCAccess.h>
#include <library/PciLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/BaseLib.h>
#include <Library/TimerLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/PerformanceLib.h>
#include <Protocol/SmmSwDispatch2.h>
#include <Protocol/Heci2Pm.h>
UINT32 mHeci_Length = 0;
UINT32 mHeci_LeftSize = 0;
UINT32 mHeci_WriteSize = 0;
UINT32 mHeci_SeCAddress = 0;
UINT32 mHeci_HostAddress = 0;
UINT32 mHeci_HeciBar = 0;
UINT32 *mHeci_Message = NULL;
BOOLEAN mHeci_Complete = TRUE;
BOOLEAN mAtRuntime = FALSE;
extern UINT32 mMonoCount;
extern UINT8 mHmacSha256Key[32];
/**
Disable HECI Interrupt.
**/
VOID HeciDisableInterrupt (
VOID
);
/**
Clear HECI Interrupt flag.
**/
VOID HeciClearInterrupt (
VOID
);
/**
Enabe HECI interrupt.
**/
VOID HeciEnableInterrupt (
VOID
);
/**
Heci Interrupt Handle
**/
VOID
HeciInterruptHandle (
VOID
);
/**
Receive Heci interrupt handle.
@param[in, out] Meesge
@param[in, out] Length
@retval Status
**/
EFI_STATUS
EFIAPI
HeciReceiveInterrupt (
IN OUT UINT8 *Message,
IN OUT UINT32 *Length
);
/**
Check is Heci Cse Response.
@retval Bool value
**/
BOOLEAN
IsHeciCseResponse (
VOID
);
EFI_STATUS
EfiHeciReadMessage (
IN HECI_DEVICE HeciDev,
IN UINT32 Blocking,
IN UINT32 *MessageBody,
IN OUT UINT32 *Length
);
EFI_STATUS
EFIAPI
Heci2SendwACK (
IN OUT UINT32 *Message,
IN UINT32 Length,
IN OUT UINT32 *RecLength,
IN UINT8 HostAddress,
IN UINT8 SeCAddress
);
BOOLEAN
EFIAPI
AtRuntime (
VOID
);
/**
Send Power Gating message.
@retval Status
**/
EFI_STATUS
SendPGIEntry (
VOID
)
{
UINT32 Size;
UINT32 MessageBody[20];
HECI_MESSAGE_HEADER MessageHeader;
volatile UINT32 *WriteBuffer;
volatile HECI_HOST_CONTROL_REGISTER *HostControlReg;
volatile HECI_SEC_CONTROL_REGISTER *SecControlReg;
HostControlReg = (volatile HECI_HOST_CONTROL_REGISTER *) (UINTN) (mHeci_HeciBar + H_CSR);
SecControlReg = (volatile HECI_SEC_CONTROL_REGISTER *) (UINTN) (mHeci_HeciBar + SEC_CSR_HA);
WriteBuffer = (UINT32 *) (UINTN) (mHeci_HeciBar + H_CB_WW);
//
// Prepare message header
//
MessageHeader.Data = 0x80040000;
MessageBody[0] = 0x0000000A;
*WriteBuffer = MessageHeader.Data;
*WriteBuffer = MessageBody[0];
//
// Send the Interrupt;
//
HostControlReg->r.H_IG = 1;
while (HostControlReg->r.H_IS == 0) {
MicroSecondDelay (10000);
}
while (!IsHeciCseResponse ()) {
MicroSecondDelay (10000);
}
HeciDisableInterrupt ();
HeciClearInterrupt ();
Size = sizeof (UINT32);
HeciReceiveInterrupt ((UINT8 *) &MessageBody, &Size);
ASSERT (MessageBody[0] == 0x0000008A);// retry
HeciEnableInterrupt ();
return EFI_SUCCESS;
}
BOOLEAN
EFIAPI
IsHeci2Idle (
VOID
)
{
return (Mmio32 (mHeci_HeciBar, R_HECI_DEVIDLEC) & B_HECI_DEVIDLEC_DEVIDLE) == B_HECI_DEVIDLEC_DEVIDLE;
}
/**
Set HECI2 to idle (D0i3).
@params None.
@retval None.
**/
VOID
EFIAPI
SetHeci2Idle (
VOID
)
{
//
// No need to continue if HECI2 is already in idle or in BIOS boot time, i.e., before ExitBootService.
// HECI2 should keep in Idle only in OS environment.
//
if (IsHeci2Idle() || !AtRuntime()) {
return;
}
DEBUG ((EFI_D_INFO, "SetHeci2Idle: HECI2 was active. Setting HECI2 to idle...\n"));
Mmio32 (mHeci_HeciBar, R_HECI_DEVIDLEC) = (B_HECI_DEVIDLEC_DEVIDLE | B_HECI_DEVIDLEC_IR);
while ((Mmio32 (mHeci_HeciBar, R_HECI_DEVIDLEC) & B_HECI_DEVIDLEC_CIP) == B_HECI_DEVIDLEC_CIP);
}
/**
Bring out HECI2 out of D0i3.
@params None.
@retval None.
**/
VOID
EFIAPI
SetHeci2Active (
VOID
)
{
volatile HECI_HOST_CONTROL_REGISTER *HostControlReg;
DEBUG ((EFI_D_INFO, "SetHeci2Active: Setting HECI2 to active...\n"));
HostControlReg = (volatile HECI_HOST_CONTROL_REGISTER *) (UINTN) (mHeci_HeciBar + H_CSR);
while ((Mmio32 (mHeci_HeciBar, R_HECI_DEVIDLEC) & B_HECI_DEVIDLEC_CIP) == B_HECI_DEVIDLEC_CIP);
if (!IsHeci2Idle ()) {
return;
}
Mmio32And (mHeci_HeciBar, R_HECI_DEVIDLEC, (UINT32) (~(B_HECI_DEVIDLEC_DEVIDLE | B_HECI_DEVIDLEC_RR)));
while ((Mmio32 (mHeci_HeciBar, R_HECI_DEVIDLEC) & B_HECI_DEVIDLEC_CIP) == B_HECI_DEVIDLEC_CIP);
//
// Clear interrupt status (if any).
//
if (HostControlReg->r.H_DEVIDLEC_IS == 1) {
HostControlReg->r.H_DEVIDLEC_IS = 1;
}
DEBUG ((EFI_D_INFO, "SetHeci2Active: HECI2 DEVIDLEC register value (should be active) = 0x%x.\n", Mmio32 (mHeci_HeciBar, R_HECI_DEVIDLEC)));
}
UINTN
EFIAPI
GetHeci2Bar (
VOID
)
{
return mHeci_HeciBar;
}
VOID
EFIAPI
SetHeci2Bar (
UINTN Heci2Bar
)
{
mHeci_HeciBar = (UINT32) Heci2Bar;
}
/**
Handle for send the Heci2 message.
@retval bool value
**/
BOOLEAN HeciSendHandle (
VOID
)
{
UINT32 MaxBuffer;
UINT32 Size;
UINTN Index;
UINT32 *MessageBody;
HECI_MESSAGE_HEADER MessageHeader;
volatile UINT32 *WriteBuffer;
volatile HECI_HOST_CONTROL_REGISTER *HostControlReg;
volatile HECI_SEC_CONTROL_REGISTER *SecControlReg;
if (mHeci_LeftSize == 0) {
return TRUE;
}
HostControlReg = (volatile HECI_HOST_CONTROL_REGISTER *) (UINTN) (mHeci_HeciBar + H_CSR);
SecControlReg = (volatile HECI_SEC_CONTROL_REGISTER *) (UINTN) (mHeci_HeciBar + SEC_CSR_HA);
WriteBuffer = (UINT32 *) (UINTN) (mHeci_HeciBar + H_CB_WW);
MessageBody = (UINT32*) mHeci_Message;
MaxBuffer = HostControlReg->r.H_CBD - 0x10;
while (mHeci_LeftSize > 0) {
Size = (mHeci_LeftSize > MaxBuffer) ? MaxBuffer : mHeci_LeftSize;
mHeci_LeftSize -= Size;
//
// Prepare message header
//
MessageHeader.Data = 0;
MessageHeader.Fields.SeCAddress = mHeci_SeCAddress;
MessageHeader.Fields.HostAddress = mHeci_HostAddress;
MessageHeader.Fields.MessageComplete = (mHeci_LeftSize > 0) ? 0 : 1;
MessageHeader.Fields.Length = (UINT32) ((mHeci_LeftSize > 0) ? Size * sizeof (UINT32) : mHeci_Length - mHeci_WriteSize * sizeof (UINT32));
*WriteBuffer = MessageHeader.Data;
for (Index = 0; Index < Size; Index ++) {
*WriteBuffer = MessageBody[Index + mHeci_WriteSize];
}
mHeci_WriteSize += Size;
//
// Send the Interrupt;
//
HostControlReg->r.H_IG = 1;
while (HostControlReg->r.H_IS == 0) {
MicroSecondDelay (10000);
}
}
HeciDisableInterrupt ();
HeciClearInterrupt ();
HeciEnableInterrupt ();
return (mHeci_LeftSize == 0);
}
UINT32 *CommandDataBuffer = NULL;
UINTN CommandDataBufferSize = 0;
UINTN CommandDataBufferHead = 0;
UINTN CommandDataBufferTail = 0;
UINT32 * CommandMessage = NULL;
/**
Store Data into Queue.
@param[in] Data
@param[in] DataLength
**/
VOID
InsertToQueue (
UINT32 * Data,
UINTN DataLength
)
{
UINTN TempLength;
if (CommandDataBufferSize + CommandDataBufferTail - CommandDataBufferHead < DataLength) {
ASSERT (FALSE);
return;
}
if (CommandDataBufferHead + DataLength <= CommandDataBufferSize) {
CopyMem (&CommandDataBuffer[CommandDataBufferHead], Data, DataLength * sizeof (UINT32));
CommandDataBufferHead += DataLength;
CommandDataBufferHead %= CommandDataBufferSize;
} else {
TempLength = CommandDataBufferSize - CommandDataBufferHead;
InsertToQueue (Data, TempLength);
InsertToQueue (Data + TempLength, DataLength - TempLength);
}
}
/**
Get Data from Queue.
@param[in] Data
@param[in] DataLength
**/
VOID
RemoveFromQueue (
UINT32 * Data,
UINTN DataLength
)
{
UINTN TempLength;
if (CommandDataBufferTail + DataLength <= CommandDataBufferSize) {
CopyMem (Data, &CommandDataBuffer[CommandDataBufferTail], DataLength * sizeof (UINT32));
CommandDataBufferTail += DataLength;
CommandDataBufferTail %= CommandDataBufferSize;
} else {
TempLength = CommandDataBufferSize - CommandDataBufferTail;
RemoveFromQueue (Data, TempLength);
RemoveFromQueue (Data + TempLength, DataLength - TempLength);
}
}
/**
Init Heci Interrupt Buffer.
**/
VOID HeciInterruptInit (
VOID
)
{
UINT32 TempHeciBar = 0;
TempHeciBar = Heci2PciRead32 (R_HECIMBAR0) & 0xFFFFFFF0;
if (TempHeciBar != 0xFFFFFFF0 ) { //No need to assign when the device is disabled
mHeci_HeciBar = TempHeciBar;
}
if (CommandDataBuffer != NULL) {
return;
}
CommandDataBuffer = AllocatePages (EFI_SIZE_TO_PAGES (MAX_HECI_BUFFER_SIZE) * 4);
CommandDataBufferSize = MAX_HECI_BUFFER_SIZE * 4 / sizeof (UINT32);
CommandMessage = AllocatePages (EFI_SIZE_TO_PAGES (MAX_HECI_BUFFER_SIZE));
}
/**
Store Command into buffer.
@param[in] Data
@param[in] DataLength
@param[in] MsgLength
@param[in] CseAddress
@param[in] HostAddress
**/
VOID StoreCommand (
IN UINT32 *Data,
IN UINT32 DataLength,
IN UINT32 MsgLength,
IN UINT32 CseAddress,
IN UINT32 HostAddress
)
{
if (CommandDataBufferSize + CommandDataBufferTail - CommandDataBufferHead < (DataLength + 4)) {
ASSERT (FALSE);
}
InsertToQueue (&DataLength, 1);
InsertToQueue (&MsgLength, 1);
InsertToQueue (&CseAddress, 1);
InsertToQueue (&HostAddress, 1);
InsertToQueue (Data, DataLength);
}
/**
Load the next Command from buffer.
@param[in] DataSize
@param[in] MsgLength
@param[in] CseAddress
@param[in] HostAddress
@retval Data
**/
UINT32 *
LoadCommand (
IN UINT32 *DataSize,
IN UINT32 *MsgLength,
IN UINT32 *CseAddress,
IN UINT32 *HostAddress
)
{
UINT32 *Data;
if (CommandDataBuffer[CommandDataBufferTail] == (UINT32) -1) {
CommandDataBufferTail = 0;
}
RemoveFromQueue (DataSize, 1);
RemoveFromQueue (MsgLength, 1);
RemoveFromQueue (CseAddress, 1);
RemoveFromQueue (HostAddress, 1);
RemoveFromQueue (CommandMessage, *DataSize);
Data = CommandMessage;
return Data;
}
BOOLEAN mProxyStopPhase = FALSE;
VOID CheckCommandQueue (
VOID
)
{
if (CommandDataBufferHead == CommandDataBufferTail) {
return;
}
if (mHeci_LeftSize != 0) {
return;
}
if (!mHeci_Complete) {
return;
}
mHeci_Message = LoadCommand(&mHeci_LeftSize, &mHeci_Length, &mHeci_SeCAddress, &mHeci_HostAddress);
mHeci_WriteSize = 0;
mHeci_Complete = FALSE;
if (mProxyStopPhase) {
if (*((UINT8 *) mHeci_Message) == 4) {
HeciSendHandle ();
while (!mHeci_Complete) {
HeciInterruptHandle ();
MicroSecondDelay (10000);
}
}
} else {
HeciSendHandle ();
}
}
BOOLEAN mBlackHolePhase = FALSE;
BOOLEAN InBXTBlackHolePhase (
)
{
return mBlackHolePhase;
}
VOID CheckBXTBlackHole (
UINT8 *Data
)
{
HECI2_BIOS_MASSAGE *Message;
Message = (HECI2_BIOS_MASSAGE *) Data;
if (Message->header.cmd_id == HECI2_GET_PROXY_STATE_CMD_ID) {
if (Message->header.req_resp == 0) {
mBlackHolePhase = TRUE;
} else {
mBlackHolePhase = FALSE;
}
}
}
/**
Interrupt Handle for HECI send message.
@param[in] Message
@param[in] Length
@param[in] HostAddress
@param[in] SeCAddress
@retval EFI_STATUS
**/
EFI_STATUS
EFIAPI
HeciSendInterrupt (
IN UINT8 *Message,
IN UINT32 Length,
IN UINT8 HostAddress,
IN UINT8 SeCAddress
)
{
UINT32 LeftSize;
CheckBXTBlackHole (Message);
//
// The first DWORD used for send MessageHeader, so useable Buffer Size should Be MaxBuffer -1;
//
LeftSize = (Length + 3) / 4;
StoreCommand ((UINT32 *) Message, LeftSize, Length, SeCAddress, HostAddress);
CheckCommandQueue ();
return EFI_SUCCESS;
}
/**
Interrupt Handle for HECI Receive message.
@param[in] Message
@param[in] Length
@retval EFI_STATUS
**/
EFI_STATUS
EFIAPI
HeciReceiveInterrupt (
IN OUT UINT8 *Message,
IN OUT UINT32 *Length
)
{
UINTN ReadSize;
UINTN Size;
UINTN Index;
UINT32 *MessageBody;
UINT32 Data;
HECI_MESSAGE_HEADER MessageHeader;
volatile UINT32 *ReadBuffer;
volatile HECI_HOST_CONTROL_REGISTER *HostControlReg;
volatile HECI_SEC_CONTROL_REGISTER *SecControlReg;
HostControlReg = (volatile HECI_HOST_CONTROL_REGISTER *) (UINTN) (mHeci_HeciBar + H_CSR);
SecControlReg = (volatile HECI_SEC_CONTROL_REGISTER *) (UINTN) (mHeci_HeciBar + SEC_CSR_HA);
ReadBuffer = (UINT32 *) (UINTN) (mHeci_HeciBar + SEC_CB_RW);
Size = 0;
ReadSize = 0;
MessageBody = (UINT32 *) Message;
MessageHeader.Data = *ReadBuffer;
if (*Length > MessageHeader.Fields.Length) {
*Length = MessageHeader.Fields.Length;
}
for (Index = 0; Index < (*Length + 3) / 4; Index ++) {
MessageBody[Index + ReadSize] = *ReadBuffer;
}
for (;Index < (MessageHeader.Fields.Length + 3) / 4; Index ++) {
Data = *ReadBuffer;
}
CheckBXTBlackHole (Message);
return EFI_SUCCESS;
}
/**
Disable Heci interrupt.
**/
VOID
HeciDisableInterrupt (
VOID
)
{
volatile HECI_HOST_CONTROL_REGISTER *HostControlReg;
HostControlReg = (volatile HECI_HOST_CONTROL_REGISTER *) (UINTN) (mHeci_HeciBar + H_CSR);
HostControlReg->r.H_IE = 0;
}
/**
Enable Heci Interrupt.
**/
VOID
HeciEnableInterrupt (
VOID
)
{
volatile HECI_HOST_CONTROL_REGISTER *HostControlReg;
HostControlReg = (volatile HECI_HOST_CONTROL_REGISTER *) (UINTN) (mHeci_HeciBar + H_CSR);
HostControlReg->r.H_IE = 1;
}
/**
Clear Heci Interrupt Flag.
**/
VOID
HeciClearInterrupt (
VOID
)
{
volatile HECI_HOST_CONTROL_REGISTER *HostControlReg;
HostControlReg = (volatile HECI_HOST_CONTROL_REGISTER *) (UINTN) (mHeci_HeciBar + H_CSR);
HostControlReg->r.H_IS = 1;
}
/**
Check dies Heci Interrupt Occur.
@retval BOOLEAN
**/
BOOLEAN
HeciInterruptOccur (
VOID
)
{
volatile HECI_HOST_CONTROL_REGISTER *HostControlReg;
HostControlReg = (volatile HECI_HOST_CONTROL_REGISTER *) (UINTN) (mHeci_HeciBar + H_CSR);
return (HostControlReg->r.H_IS == 1);
}
/**
is there Heci Response?
@retval BOOLEAN
**/
BOOLEAN
IsHeciCseResponse (
VOID
)
{
volatile HECI_SEC_CONTROL_REGISTER *SecControlReg;
SecControlReg = (volatile HECI_SEC_CONTROL_REGISTER *) (UINTN) (mHeci_HeciBar + SEC_CSR_HA);
return (SecControlReg->r.SEC_CBRP_HRA != SecControlReg->r.SEC_CBWP_HRA);
}
/**
Heci Interrupt Handle.
**/
UINT8 Msg[400];
VOID
HeciInterruptHandle (
VOID
)
{
UINT32 MsgLength;
if (IsHeciCseResponse ()) {
HeciDisableInterrupt ();
HeciClearInterrupt ();
MsgLength = sizeof (Msg);
HeciReceiveInterrupt (Msg, &MsgLength);
mHeci_Complete = TRUE;
HeciEnableInterrupt ();
} else {
if (HeciSendHandle ()) {
}
}
CheckCommandQueue ();
if ((CommandDataBufferHead == CommandDataBufferTail) && mHeci_Complete) {
SetHeci2Idle ();
}
}
VOID ProxyStopNotify (
VOID
)
{
HeciPciWrite32 (PCI_CFG_GS3, (PCI_CFG_GS3_PANIC_SUPPORTED | PCI_CFG_GS3_PANIC));
mProxyStopPhase = TRUE;
}
VOID FlashCommandQueue (
VOID
)
{
SetHeci2Active ();
while (CommandDataBufferHead != CommandDataBufferTail) {
CheckCommandQueue ();
}
}
/**
SMI Callback function to inform CSE to take NVM ownership.
@param[in] DispatchHandle
@param[in] RegisterContext
@param[in] CommBuffer
@param[in] CommBufferSize
@retval EFI_STATUS
**/
EFI_STATUS
EFIAPI
SystemResetCallback (
IN EFI_HANDLE DispatchHandle,
IN CONST VOID *Context,
IN OUT VOID *CommBuffer,
IN OUT UINTN *CommBufferSize
)
{
ProxyStopNotify ();
HeciInterruptHandle ();
mHeci_Complete = TRUE;
FlashCommandQueue ();
return EFI_SUCCESS;
}
/**
Registering SMI Callback function for System Reset Notification.
@param[in] None
@retval None
**/
VOID InitSystemResetHandle (
)
{
EFI_STATUS Status;
EFI_SMM_SW_DISPATCH2_PROTOCOL *SwDispatch;
EFI_SMM_SW_REGISTER_CONTEXT SwContext;
EFI_HANDLE SwHandle;
//
// Get the Sw dispatch protocol and register SMI callback functions.
//
Status = gSmst->SmmLocateProtocol (&gEfiSmmSwDispatch2ProtocolGuid, NULL, (VOID**)&SwDispatch);
ASSERT_EFI_ERROR (Status);
SwContext.SwSmiInputValue = (UINTN) HECI_SYSTEM_RESET_NOTIFY;
Status = SwDispatch->Register (SwDispatch, SystemResetCallback, &SwContext, &SwHandle);
ASSERT_EFI_ERROR (Status);
}
UINTN Tag = 0;
/**
SMM handle to dispatch request.
@param[in] DispatchHandle
@param[in] RegisterContext
@param[in] CommBuffer
@param[in] CommBufferSize
@retval EFI_STATUS
**/
EFI_STATUS
EFIAPI
HeciSmmHandler (
IN EFI_HANDLE DispatchHandle,
IN CONST VOID *RegisterContext,
IN OUT VOID *CommBuffer,
IN OUT UINTN *CommBufferSize
)
{
EFI_STATUS Status=EFI_SUCCESS;
SMM_HECI_COMMUNICATE_HEADER *SmmHeciFunctionHeader;
SMM_HECI_SEND_MESSAGE_BODY *SendMessageBody;
SMM_HECI_READ_MESSAGE_BODY *ReadMessageBody;
SMM_HECI_SEND_MESSAGE_W_ACK_BODY *SendMessageWAckBody;
EFI_HANDLE HeciHandle;
UINT32 SecMode;
//
// If input is invalid, stop processing this SMI
//
if (CommBuffer == NULL || CommBufferSize == NULL) {
return Status;
}
SecMode = HeciPciRead32 (R_SEC_FW_STS0);
if (SEC_MODE_NORMAL != (SecMode & 0xF0000)) {
return EFI_UNSUPPORTED;
}
SmmHeciFunctionHeader = (VOID *) CommBuffer;
switch (SmmHeciFunctionHeader->Function) {
case SMM_HECI_FUNCTION_SEND_MESSAGE_WITH_ACK:
DEBUG ((EFI_D_ERROR, "SMM_HECI_FUNCTION_SEND_MESSAGE_WITH_ACK \n"));
if (!((CommandDataBufferHead == CommandDataBufferTail) && mHeci_Complete)) {
Status = EFI_NOT_READY;
DEBUG ((EFI_D_ERROR, "SMM_HECI_FUNCTION_SEND_MESSAGE_WITH_ACK EFI_NOT_READY\n"));
break;
}
SendMessageWAckBody = (SMM_HECI_SEND_MESSAGE_W_ACK_BODY *) SmmHeciFunctionHeader->Data;
Status = Heci2SendwACK (
(UINT32 *) SendMessageWAckBody->MessageData,
SendMessageWAckBody->Length,
&SendMessageWAckBody->RecLength,
(UINT8) SendMessageWAckBody->HostAddress,
(UINT8) SendMessageWAckBody->CSEAddress
);
DEBUG ((EFI_D_ERROR, "SMM_HECI_FUNCTION_SEND_MESSAGE_WITH_ACK %x %x\n", Status, *(UINT32*)SendMessageWAckBody->MessageData));
break;
case SMM_HECI_FUNCTION_READ_MESSAGE:
ReadMessageBody = (SMM_HECI_READ_MESSAGE_BODY *) SmmHeciFunctionHeader->Data;
Status = EfiHeciReadMessage (
HECI2_DEVICE,
0,
&ReadMessageBody->Length,
(UINT32 *) &ReadMessageBody->MessageData
);
break;
case SMM_HECI_FUNCTION_SEND_MESSAGE:
SetHeci2Active ();
SendMessageBody = (SMM_HECI_SEND_MESSAGE_BODY *) SmmHeciFunctionHeader->Data;
HeciSendInterrupt (SendMessageBody->MessageData, SendMessageBody->Length, (UINT8)SendMessageBody->HostAddress, (UINT8)SendMessageBody->CSEAddress);
break;
case SMM_HECI_FUNCTION_GET_STATUS:
if (IsHeci2Idle ()) {
SmmHeciFunctionHeader->Data[0] = 0;
} else {
if (HeciInterruptOccur () || IsHeciCseResponse ()) {
HeciInterruptHandle ();
}
if (InBXTBlackHolePhase ()) {
SmmHeciFunctionHeader->Data[0] = 0;
} else {
if ((CommandDataBufferHead == CommandDataBufferTail) && mHeci_Complete) {
SmmHeciFunctionHeader->Data[0] = 0;
SetHeci2Idle ();
} else {
SmmHeciFunctionHeader->Data[0] = 1;
}
}
}
break;
case SMM_HECI_MESSAGE_END_OF_POST:
DEBUG ((EFI_D_INFO, "HeciSmmHandler SMM_HECI_MESSAGE_END_OF_POST\n"));
InitSystemResetHandle ();
HeciHandle = NULL;
Status = gSmst->SmmInstallProtocolInterface (
&HeciHandle,
&gEfiCseEndofPostGuid,
EFI_NATIVE_INTERFACE,
NULL
);
break;
case SMM_HECI_MESSAGE_END_OF_SERVICES:
DEBUG ((EFI_D_INFO, "HeciSmmHandler SMM_HECI_MESSAGE_END_OF_SERVICES\n"));
HeciHandle = NULL;
Status = gSmst->SmmInstallProtocolInterface (
&HeciHandle,
&gEfiCseEndofServicesGuid,
EFI_NATIVE_INTERFACE,
NULL
);
mAtRuntime = TRUE;
break;
default:
Status = EFI_UNSUPPORTED;
}
SmmHeciFunctionHeader->ReturnStatus = Status;
return EFI_SUCCESS;
}
/**
SmmEndOfDxeCallback
@param[in] Protocol
@param[in] Interface
@param[in] Handle
@retval EFI_STATUS
**/
EFI_STATUS
EFIAPI
SmmEndOfDxeCallback (
IN CONST EFI_GUID *Protocol,
IN VOID *Interface,
IN EFI_HANDLE Handle
)
{
return EFI_SUCCESS;
}
/**
Send Heci message with response.
@param[in] HeciDev HECI device
@param[in, out] Message Message Data
@param[in, out] Length Message Data Length
@param[in, out] RecLength Return message buffer length
@param[in] HostAddress Host Address
@param[in] SECAddress CSE Address
@retval EFI_SUCCESS Send message success.
@retval Others Send message failed.
**/
EFI_STATUS
EfiHeciSendwack (
IN HECI_DEVICE HeciDev,
IN OUT UINT32 *Message,
IN OUT UINT32 Length,
IN OUT UINT32 *RecLength,
IN UINT8 HostAddress,
IN UINT8 SECAddress
)
{
EFI_STATUS Status;
SetHeci2Active ();
Status = Heci2SendwACK (
Message,
Length,
RecLength,
HostAddress,
SECAddress
);
SetHeci2Idle ();
return Status;
}
/**
Read the Heci message
@param[in] HeciDev HECI Device ID.
@param[in] Blocking Indicate does waiting for response.
@param[in] MessageBody Message data buffer.
@param[in, out] Length Message data buffer size.
@retval EFI_SUCCESS Send message success.
@retval Others Send message failed.
**/
EFI_STATUS
EfiHeciReadMessage (
IN HECI_DEVICE HeciDev,
IN UINT32 Blocking,
IN UINT32 *MessageBody,
IN OUT UINT32 *Length
)
{
if (IsHeciCseResponse ()) {
HeciInterruptHandle ();
return EFI_SUCCESS;
}
return EFI_NOT_READY;
}
/**
Send Heci message without response.
@param[in] HeciDev HECI Device ID.
@param[in] Message Message Data.
@param[in] Length Message Data length.
@param[in] HostAddress Host Address.
@param[in] SECAddress CSE Address.
@retval EFI_SUCCESS Send message success.
@retval Others Send message failed.
**/
EFI_STATUS
EfiHeciSendMessage (
IN HECI_DEVICE HeciDev,
IN UINT32 *Message,
IN UINT32 Length,
IN UINT8 HostAddress,
IN UINT8 SECAddress
)
{
SetHeci2Active ();
HeciSendInterrupt ((UINT8 *) Message, Length, HostAddress, SECAddress);
return EFI_SUCCESS;
}
/**
Reset the heci device.
@param[in] HeciDev HECI Device ID.
@retval EFI_SUCCESS Reset HECI success.
@retval Others Reset HECI failed.
**/
EFI_STATUS
EfiHeciReset (
IN HECI_DEVICE HeciDev
)
{
return EFI_UNSUPPORTED;
}
/**
Init the heci device.
@param[in] HeciDev HECI Device ID.
@retval EFI_SUCCESS Init HECI success.
@retval Others Init HECI failed.
**/
EFI_STATUS
EfiHeciInit (
IN HECI_DEVICE HeciDev
)
{
return EFI_UNSUPPORTED;
}
/**
Reinit the heci device.
@param[in] HeciDev HECI Device ID.
@retval EFI_SUCCESS Reinit HECI success.
@retval Others Reinit HECI failed.
**/
EFI_STATUS
EfiHeciReinit (
IN HECI_DEVICE HeciDev
)
{
return EFI_UNSUPPORTED;
}
/**
Reset the Heci device and waiting for Delay time.
@param[in] HeciDev HECI Device ID.
@param[in] Delay The time waiting for reset.
@retval EFI_SUCCESS Reset success.
@retval Others Reset failed.
**/
EFI_STATUS
EfiHeciResetWait (
IN HECI_DEVICE HeciDev,
IN UINT32 Delay
)
{
return EFI_UNSUPPORTED;
}
/**
Get the Heci status.
@param[out] Status HECI Staus.
@retval EFI_SUCCESS Get status success.
@retval Others Get status failed.
**/
EFI_STATUS
EfiHeciGetSecStatus (
IN UINT32 *Status
)
{
return EFI_UNSUPPORTED;
}
/**
Get the heci mode.
@param[in] HeciDev HECI Device ID.
@param[out] Mode Heci Mode
@retval EFI_SUCCESS Get mode success.
@retval Others Get mode failed.
**/
EFI_STATUS
EfiHeciGetSecMode (
IN HECI_DEVICE HeciDev,
IN UINT32 *Mode
)
{
return EFI_UNSUPPORTED;
}
/**
Return whether at runtime.
@param None.
@retval TRUE If at runtime.
FALSE Not at runtime.
**/
BOOLEAN
EFIAPI
AtRuntime (
VOID
)
{
return mAtRuntime;
}
EFI_HECI_PROTOCOL mHeciSmmProtocol = {
EfiHeciSendwack,
EfiHeciReadMessage,
EfiHeciSendMessage,
EfiHeciReset,
EfiHeciInit,
EfiHeciResetWait,
EfiHeciReinit,
EfiHeciGetSecStatus,
EfiHeciGetSecMode
};
EFI_HECI2_PM_PROTOCOL mHeci2PmSmmProtocol = {
IsHeci2Idle,
SetHeci2Active,
SetHeci2Idle,
GetHeci2Bar,
SetHeci2Bar,
AtRuntime
};
/**
SmmPlatformHeci2ProxyHandler
@param[in] DispatchHandle
@param[in] RegisterContext
@param[in,out] CommBuffer
@param[in,out] CommBufferSize
@retval EFI_STATUS
**/
EFI_STATUS
SmmPlatformHeci2ProxyHandler (
IN EFI_HANDLE DispatchHandle,
IN CONST VOID *RegisterContext,
IN OUT VOID *CommBuffer,
IN OUT UINTN *CommBufferSize
)
{
HeciInterruptInit ();
if (HeciInterruptOccur ()) {
HeciInterruptHandle ();
}
return EFI_SUCCESS;
}
/**
Variable Driver main entry point. The Variable driver places the 4 EFI
runtime services in the EFI System Table and installs arch protocols
for variable read and write services being available. It also registers
a notification function for an EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.
@param[in] ImageHandle The firmware allocated handle for the EFI image.
@param[in] SystemTable A pointer to the EFI System Table.
@retval EFI_SUCCESS Variable service successfully initialized.
**/
EFI_STATUS
EFIAPI
HeciSmmInitialize (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
EFI_HANDLE HeciHandle;
EFI_HANDLE SmmHandle;
VOID *SmmEndOfDxeRegistration;
MBP_SMM_TRUSTED_KEY SmmTrustedKey;
//
// Install the Smm Variable Protocol on a new handle.
//
if (Heci2PciRead16 (R_SEC_DevID_VID) == 0xFFFF) {
return EFI_SUCCESS;
}
if (mMonoCount == 0) {
//
// Since the is the first message, get the SMM trusted key for this boot
//
Status = HeciGetSMMTrustedKey (&SmmTrustedKey);
if (!EFI_ERROR (Status)) {
CopyMem (mHmacSha256Key, SmmTrustedKey.SmmTrustedKey, sizeof (mHmacSha256Key));
mMonoCount = SmmTrustedKey.MonotonicCounter + 1;
DEBUG ((EFI_D_INFO, "HMAC Monotonic Count = %d\n", mMonoCount));
} else {
DEBUG ((EFI_D_ERROR, "Unable to get the SMM trusted key. Cannot send HECI2 transactions.\n"));
ASSERT_EFI_ERROR (Status);
return Status;
}
}
//
// Install the Smm Variable Protocol on a new handle.
//
HeciHandle = NULL;
Status = gSmst->SmmInstallProtocolInterface (
&HeciHandle,
&gEfiHeciSmmProtocolGuid,
EFI_NATIVE_INTERFACE,
&mHeciSmmProtocol
);
ASSERT_EFI_ERROR (Status);
HeciHandle = NULL;
Status = gSmst->SmmInstallProtocolInterface (
&HeciHandle,
&gEfiHeci2PmProtocolGuid,
EFI_NATIVE_INTERFACE,
&mHeci2PmSmmProtocol
);
ASSERT_EFI_ERROR (Status);
//
// Register SMM variable SMI handler
//
Status = gSmst->SmiHandlerRegister (HeciSmmHandler, &gEfiHeciSmmProtocolGuid, &HeciHandle);
ASSERT_EFI_ERROR (Status);
SmmHandle = NULL;
Status = gSmst->SmiHandlerRegister (SmmPlatformHeci2ProxyHandler, NULL, &SmmHandle);
//
// Register EFI_SMM_END_OF_DXE_PROTOCOL_GUID notify function.
//
Status = gSmst->SmmRegisterProtocolNotify (
&gEfiSmmEndOfDxeProtocolGuid,
SmmEndOfDxeCallback,
&SmmEndOfDxeRegistration
);
ASSERT_EFI_ERROR (Status);
DEBUG ((EFI_D_INFO, " Start Init Heci2 SMI Interrupt\n"));
PERF_START_EX (NULL, NULL, NULL, 0, 0x8100);
HeciReset (HECI2_DEVICE);
PERF_END_EX (NULL, NULL, NULL, 0, 0x8101);
HeciInterruptInit ();
HeciDisableInterrupt ();
HeciClearInterrupt ();
HeciEnableInterrupt ();
DEBUG ((EFI_D_INFO, "Start set HIDM %x %x\n", Heci2PciRead16(0), Heci2PciRead16(2)));
Heci2PciWrite32 (0xa0, 2);
return EFI_SUCCESS;
}
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