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|
/** @file
HECI Smm Runtime Dxe 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/SmmCommunication.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiDriverEntryPoint.h>
#include <Library/UefiRuntimeLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/PcdLib.h>
#include <Library/UefiLib.h>
#include <Library/BaseLib.h>
#include <Guid/EventGroup.h>
#include <protocol/Heci.h>
#include <HeciSmm.h>
#include <Library/SideBandLib.h>
#include <SeCAccess.h>
#include <HeciRegs.h>
EFI_HANDLE mHandle = NULL;
EFI_HECI_PROTOCOL *mSmmHeci = NULL;
EFI_EVENT mVirtualAddressChangeEvent = NULL;
EFI_SMM_COMMUNICATION_PROTOCOL *mSmmCommunication = NULL;
UINT8 *mHeciBuffer = NULL;
UINT8 *mHeciBufferPhysical = NULL;
UINTN mHeciBufferSize;
UINTN mHeciBufferPayloadSize;
/**
Put HECI1 and HECI3 into D0I3.
@param[in] None.
@retval None
**/
VOID
PutDeviceIntoD0I3 (
VOID
)
{
UINT32 HeciBar;
DEBUG ((EFI_D_INFO, "Put all HECI devices into D0i3 and hide HECI 2 and HECI 3.\n"));
HeciBar = HeciPciRead32 (R_HECIMBAR0) & 0xFFFFFFF0 ;
if ((Mmio32 (HeciBar, R_HECI_DEVIDLEC) & B_HECI_DEVIDLEC_DEVIDLE) == 0) {
//
// Poll until CIP == 0
//
while ((Mmio32 (HeciBar, R_HECI_DEVIDLEC) & B_HECI_DEVIDLEC_CIP) == B_HECI_DEVIDLEC_CIP);
Mmio32Or (HeciBar, R_HECI_DEVIDLEC, B_HECI_DEVIDLEC_DEVIDLE);
}
HeciBar = Heci2PciRead32 (R_HECIMBAR0) & 0xFFFFFFF0 ;
if ((Mmio32 (HeciBar, R_HECI_DEVIDLEC) & B_HECI_DEVIDLEC_DEVIDLE) == 0) {
//
// Poll until CIP == 0
//
while ((Mmio32 (HeciBar, R_HECI_DEVIDLEC) & B_HECI_DEVIDLEC_CIP) == B_HECI_DEVIDLEC_CIP);
Mmio32Or (HeciBar, R_HECI_DEVIDLEC, B_HECI_DEVIDLEC_DEVIDLE);
}
HeciBar = Heci3PciRead32 (R_HECIMBAR0) & 0xFFFFFFF0;
if ((Mmio32 (HeciBar, R_HECI_DEVIDLEC) & B_HECI_DEVIDLEC_DEVIDLE) == 0) {
//
// Poll until CIP == 0
//
while ((Mmio32 (HeciBar, R_HECI_DEVIDLEC) & B_HECI_DEVIDLEC_CIP) == B_HECI_DEVIDLEC_CIP);
Mmio32Or (HeciBar, R_HECI_DEVIDLEC, B_HECI_DEVIDLEC_DEVIDLE);
}
SideBandAndThenOr32 (
0xC6,
0x1D38,
0xFFFFFFFF,
(UINT32) BIT0
);
SideBandAndThenOr32 (
0xC6,
0x1c38,
0xFFFFFFFF,
(UINT32) BIT0
);
}
/**
Initialize the communicate buffer using DataSize and Function.
The communicate size is: SMM_COMMUNICATE_HEADER_SIZE + SMM_VARIABLE_COMMUNICATE_HEADER_SIZE +
DataSize.
@param[out] DataPtr Points to the data in the communicate buffer.
@param[in] DataSize The data size to send to SMM.
@param[in] Function The function number to initialize the communicate header.
@retval EFI_INVALID_PARAMETER The data size is too big.
@retval EFI_SUCCESS Find the specified variable.
**/
EFI_STATUS
InitCommunicateBuffer (
OUT VOID **DataPtr OPTIONAL,
IN UINTN DataSize,
IN UINTN Function
)
{
EFI_SMM_COMMUNICATE_HEADER *SmmCommunicateHeader;
SMM_HECI_COMMUNICATE_HEADER *SmmHeciFunctionHeader;
if (DataSize > mHeciBufferSize) {
return EFI_INVALID_PARAMETER;
}
SmmCommunicateHeader = (EFI_SMM_COMMUNICATE_HEADER *) mHeciBuffer;
CopyGuid (&SmmCommunicateHeader->HeaderGuid, &gEfiHeciSmmProtocolGuid);
SmmCommunicateHeader->MessageLength = DataSize + sizeof (EFI_SMM_COMMUNICATE_HEADER);
SmmHeciFunctionHeader = (SMM_HECI_COMMUNICATE_HEADER *) SmmCommunicateHeader->Data;
SmmHeciFunctionHeader->Function = Function;
if (DataPtr != NULL) {
*DataPtr = SmmHeciFunctionHeader->Data;
}
return EFI_SUCCESS;
}
/**
Send the data in communicate buffer to SMM.
@param[in] DataSize This size of the function header and the data.
@retval EFI_SUCCESS Success is returned from the functin in SMM.
@retval Others Failure is returned from the function in SMM.
**/
EFI_STATUS
SendCommunicateBuffer (
IN UINTN DataSize
)
{
EFI_STATUS Status;
UINTN CommSize;
EFI_SMM_COMMUNICATE_HEADER *SmmCommunicateHeader;
SMM_HECI_COMMUNICATE_HEADER *SmmHeciFunctionHeader;
CommSize = DataSize + sizeof (EFI_SMM_COMMUNICATE_HEADER) + sizeof (SMM_HECI_COMMUNICATE_HEADER);
Status = mSmmCommunication->Communicate (mSmmCommunication, mHeciBufferPhysical, &CommSize);
ASSERT_EFI_ERROR (Status);
SmmCommunicateHeader = (EFI_SMM_COMMUNICATE_HEADER *) mHeciBuffer;
SmmHeciFunctionHeader = (SMM_HECI_COMMUNICATE_HEADER *) SmmCommunicateHeader->Data;
return SmmHeciFunctionHeader->ReturnStatus;
}
/**
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;
UINTN PayloadSize;
SMM_HECI_SEND_MESSAGE_W_ACK_BODY *SmmHeciSendMessageBody;
UINT32 MaxLength;
UINT32 SecMode;
if (HeciDev != HECI2_DEVICE) {
return EFI_UNSUPPORTED;
}
if (Message == NULL || Length == 0) {
return EFI_INVALID_PARAMETER;
}
SecMode = HeciPciRead32 (R_SEC_FW_STS0);
if (SEC_MODE_NORMAL != (SecMode & 0xF0000)) {
return EFI_UNSUPPORTED;
}
if (Length > *RecLength) {
MaxLength = Length;
} else {
MaxLength = *RecLength;
}
SmmHeciSendMessageBody = NULL;
PayloadSize = sizeof (SMM_HECI_COMMUNICATE_HEADER) + sizeof (SMM_HECI_SEND_MESSAGE_W_ACK_BODY) + Length;
Status = InitCommunicateBuffer ((VOID **) &SmmHeciSendMessageBody, PayloadSize, SMM_HECI_FUNCTION_SEND_MESSAGE_WITH_ACK);
if (EFI_ERROR (Status)) {
goto Done;
}
ASSERT (SmmHeciSendMessageBody != NULL);
if (SmmHeciSendMessageBody != NULL) {
DEBUG ((EFI_D_ERROR, "EfiHeciSendwack 2\n"));
SmmHeciSendMessageBody->Length = Length;
SmmHeciSendMessageBody->HostAddress = HostAddress;
SmmHeciSendMessageBody->CSEAddress = SECAddress;
CopyMem (SmmHeciSendMessageBody->MessageData, (VOID *) Message, Length);
//
// Send data to SMM.
//
Status = SendCommunicateBuffer (PayloadSize);
if (!EFI_ERROR (Status)) {
*RecLength = SmmHeciSendMessageBody->RecLength;
CopyMem (Message, SmmHeciSendMessageBody->MessageData, *RecLength);
}
}
Done:
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
)
{
EFI_STATUS Status;
UINT32 SecMode;
UINTN PayloadSize;
SMM_HECI_READ_MESSAGE_BODY *SmmHeciReadMessageBody;
if (HeciDev != HECI2_DEVICE) {
return EFI_UNSUPPORTED;
}
SecMode = HeciPciRead32 (R_SEC_FW_STS0);
if (SEC_MODE_NORMAL != (SecMode & 0xF0000)) {
return EFI_UNSUPPORTED;
}
SmmHeciReadMessageBody = NULL;
PayloadSize = sizeof (SMM_HECI_COMMUNICATE_HEADER) + sizeof (SMM_HECI_READ_MESSAGE_BODY) + *Length;
Status = InitCommunicateBuffer ((VOID **) &SmmHeciReadMessageBody, PayloadSize, SMM_HECI_FUNCTION_READ_MESSAGE);
if (EFI_ERROR (Status)) {
goto Done;
}
ASSERT (SmmHeciReadMessageBody != NULL);
if (SmmHeciReadMessageBody!= NULL) {
SmmHeciReadMessageBody->Length = *Length;
//
// Send data to SMM.
//
Status = SendCommunicateBuffer (PayloadSize);
if (!EFI_ERROR (Status)) {
*Length = SmmHeciReadMessageBody->Length;
CopyMem (MessageBody, SmmHeciReadMessageBody->MessageData, *Length);
}
}
Done:
return Status;
}
/**
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
)
{
EFI_STATUS Status;
UINTN PayloadSize;
SMM_HECI_SEND_MESSAGE_BODY *SmmHeciSendMessageBody;
UINT32 SecMode;
if (HeciDev != HECI2_DEVICE) {
return EFI_UNSUPPORTED;
}
SecMode = HeciPciRead32(R_SEC_FW_STS0);
if (SEC_MODE_NORMAL != (SecMode & 0xF0000)) {
return EFI_UNSUPPORTED;
}
if (Message == NULL || Length == 0) {
return EFI_INVALID_PARAMETER;
}
SmmHeciSendMessageBody = NULL;
PayloadSize = sizeof (SMM_HECI_COMMUNICATE_HEADER) + Length;
Status = InitCommunicateBuffer ((VOID **) &SmmHeciSendMessageBody, PayloadSize, SMM_HECI_FUNCTION_SEND_MESSAGE);
if (EFI_ERROR (Status)) {
goto Done;
}
ASSERT (SmmHeciSendMessageBody != NULL);
if (SmmHeciSendMessageBody != NULL) {
SmmHeciSendMessageBody->Length = Length;
SmmHeciSendMessageBody->HostAddress = HostAddress;
SmmHeciSendMessageBody->CSEAddress = SECAddress;
CopyMem (SmmHeciSendMessageBody->MessageData, (VOID *) Message, Length);
//
// Send data to SMM.
//
Status = SendCommunicateBuffer (PayloadSize);
}
Done:
return Status;
}
/**
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
)
{
if (HeciDev != HECI2_DEVICE) {
return EFI_UNSUPPORTED;
}
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
)
{
if (HeciDev != HECI2_DEVICE) {
return EFI_UNSUPPORTED;
}
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
)
{
if (HeciDev != HECI2_DEVICE) {
return EFI_UNSUPPORTED;
}
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
)
{
if (HeciDev != HECI2_DEVICE) {
return EFI_UNSUPPORTED;
}
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 (
OUT UINT32 *Status2
)
{
EFI_STATUS Status;
UINTN PayloadSize;
UINT8 *Data;
Data = NULL;
PayloadSize = sizeof (SMM_HECI_COMMUNICATE_HEADER);
Status = InitCommunicateBuffer ((VOID **) &Data, PayloadSize, SMM_HECI_FUNCTION_GET_STATUS);
if (EFI_ERROR (Status)) {
goto Done;
}
ASSERT (Data != NULL);
if (Data != NULL) {
//
// Send data to SMM.
//
Status = SendCommunicateBuffer (PayloadSize);
*Status2 = (UINT32) *Data;
}
Done:
return Status;
}
/**
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,
OUT UINT32 *Mode
)
{
if (HeciDev != HECI2_DEVICE) {
return EFI_UNSUPPORTED;
}
return EFI_UNSUPPORTED;
}
EFI_HECI_PROTOCOL mHeciProtocol = {
EfiHeciSendwack,
EfiHeciReadMessage,
EfiHeciSendMessage,
EfiHeciReset,
EfiHeciInit,
EfiHeciResetWait,
EfiHeciReinit,
EfiHeciGetSecStatus,
EfiHeciGetSecMode
};
/**
Initialize variable service and install Variable Architectural protocol.
@param[in] Event Event whose notification function is being invoked.
@param[in] Context Pointer to the notification function's context.
**/
VOID
EFIAPI
AddressChangeEvent (
IN EFI_EVENT Event,
IN VOID *Context
)
{
EfiConvertPointer (0x0, (VOID **) &mHeciBuffer);
EfiConvertPointer (0x0, (VOID **) &mSmmCommunication);
}
/**
HeciSmmReady
@param[in] Event
@param[in] Context
@retval EFI_STATUS
**/
VOID
EFIAPI
HeciSmmReady (
IN EFI_EVENT Event,
IN VOID *Context
)
{
EFI_STATUS Status;
DEBUG((EFI_D_INFO, "HeciSmmReady \n"));
if (mHandle != NULL) {
DEBUG ((EFI_D_INFO, "gEfiHeciProtocol Has Installed return\n"));
return;
}
Status = gBS->LocateProtocol (&gEfiSmmCommunicationProtocolGuid, NULL, (VOID **) &mSmmCommunication);
ASSERT_EFI_ERROR (Status);
//
// Save the buffer physical address used for SMM conmunication.
//
mHeciBufferPhysical = mHeciBuffer;
//
// Install the Heci Protocol on a new handle.
//
Status = gBS->InstallProtocolInterface (
&mHandle,
&gEfiHeciSmmRuntimeProtocolGuid,
EFI_NATIVE_INTERFACE,
&mHeciProtocol
);
DEBUG ((EFI_D_INFO, " Heci 2 Prepare Done \n"));
ASSERT_EFI_ERROR (Status);
}
VOID
EFIAPI
HeciSmmEndOfPostEvent (
IN EFI_EVENT Event,
IN VOID* Context
)
{
UINT32 SecMode;
SecMode = HeciPciRead32 (R_SEC_FW_STS0);
if (SEC_MODE_NORMAL == (SecMode & 0xF0000)) {
HeciSmmReady (NULL, NULL);
//
// Init the communicate buffer. The buffer data size is:
//
InitCommunicateBuffer (NULL, 0, SMM_HECI_MESSAGE_END_OF_POST);
//
// Send data to SMM.
//
SendCommunicateBuffer (0);
}
gBS->CloseEvent (Event);
}
VOID
EFIAPI
HeciSmmEndOfDXEEvent (
IN EFI_EVENT Event,
IN VOID* Context
)
{
UINT32 SecMode;
SecMode = HeciPciRead32 (R_SEC_FW_STS0);
if (SEC_MODE_NORMAL == (SecMode & 0xF0000)) {
HeciSmmReady (NULL, NULL);
}
gBS->CloseEvent (Event);
}
/**
Event handle for Exit boot services
@param[in] Event
@param[in] ParentImageHandle
**/
VOID
EFIAPI
HeciSmmEndOfServicesEvent (
IN EFI_EVENT Event,
IN VOID *Context
)
{
UINT32 SecMode;
SecMode = HeciPciRead32 (R_SEC_FW_STS0);
if (SEC_MODE_NORMAL == (SecMode & 0xF0000)) {
//
// Init the communicate buffer. The buffer data size is:
//
InitCommunicateBuffer (NULL, 0, SMM_HECI_MESSAGE_END_OF_SERVICES);
//
// Send data to SMM.
//
SendCommunicateBuffer (0);
PutDeviceIntoD0I3 ();
}
gBS->CloseEvent (Event);
}
/**
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
HeciSmmRuntimeDxeInitialize (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
EFI_EVENT Event;
EFI_EVENT EndOfDxeEvent;
VOID *RegistrationLocal;
//
// Create event
//
Status = gBS->CreateEventEx (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
HeciSmmEndOfDXEEvent,
NULL,
&gEfiEndOfDxeEventGroupGuid,
&EndOfDxeEvent
);
ASSERT_EFI_ERROR (Status);
Status = gBS->CreateEvent (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
HeciSmmEndOfPostEvent,
(VOID *) NULL,
&Event
);
ASSERT_EFI_ERROR (Status);
//
// Register for an installation of protocol interface
//
Status = gBS->RegisterProtocolNotify (
&gEfiCseEndofPostGuid,
Event,
&RegistrationLocal
);
ASSERT_EFI_ERROR (Status);
//
// Create event
//
Status = gBS->CreateEvent (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
HeciSmmEndOfServicesEvent,
(VOID *) NULL,
&Event
);
ASSERT_EFI_ERROR (Status);
//
// Register for an installation of protocol interface
//
Status = gBS->RegisterProtocolNotify (
&gEfiCseEndofServicesGuid,
Event,
&RegistrationLocal
);
ASSERT_EFI_ERROR (Status);
//
// Register the event to convert the pointer for runtime.
//
gBS->CreateEventEx (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
AddressChangeEvent,
NULL,
&gEfiEventVirtualAddressChangeGuid,
&mVirtualAddressChangeEvent
);
//
// Allocate memory for variable communicate buffer.
//
mHeciBufferSize = sizeof (SMM_HECI_COMMUNICATE_HEADER) + MAX_HECI_BUFFER_SIZE;
mHeciBuffer = AllocateRuntimePool (mHeciBufferSize);
ASSERT (mHeciBuffer != NULL);
return EFI_SUCCESS;
}
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