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alder_lake_bios/Intel/AlderLake/ClientOneSiliconPkg/IpBlock/Spi/Dxe/SpiSmmDxe.c

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/** @file
SPI DXE Driver implements the SPI Host Controller Compatibility Interface.
@copyright
INTEL CONFIDENTIAL
Copyright 2018 - 2019 Intel Corporation.
The source code contained or described herein and all documents related to the
source code ("Material") are owned by Intel Corporation or its suppliers or
licensors. Title to the Material remains with Intel Corporation or its suppliers
and licensors. The Material may contain trade secrets and proprietary and
confidential information of Intel Corporation and its suppliers and licensors,
and is protected by worldwide copyright and trade secret laws and treaty
provisions. No part of the Material may be used, copied, reproduced, modified,
published, uploaded, posted, transmitted, distributed, or disclosed in any way
without Intel's prior express written permission.
No license under any patent, copyright, trade secret or other intellectual
property right is granted to or conferred upon you by disclosure or delivery
of the Materials, either expressly, by implication, inducement, estoppel or
otherwise. Any license under such intellectual property rights must be
express and approved by Intel in writing.
Unless otherwise agreed by Intel in writing, you may not remove or alter
this notice or any other notice embedded in Materials by Intel or
Intel's suppliers or licensors in any way.
This file contains an 'Intel Peripheral Driver' and is uniquely identified as
"Intel Reference Module" and is licensed for Intel CPUs and chipsets under
the terms of your license agreement with Intel or your vendor. This file may
be modified by the user, subject to additional terms of the license agreement.
@par Specification Reference:
**/
#include <Library/DebugLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Protocol/SmmCommunication.h>
#include <Protocol/Spi.h>
#include "SpiSmmCommunication.h"
#define SPI_COMM_BUFFER_PAGE 2
EFI_SMM_COMMUNICATION_PROTOCOL *mSmmCommunication = NULL;
VOID *mCommunicateBuffer = NULL;
CONST UINT32 mMaxDataSize = EFI_PAGES_TO_SIZE (SPI_COMM_BUFFER_PAGE - 1);
/**
Initialize the communicate buffer using DataSize and Function number.
@param[out] CommunicateBuffer The communicate buffer. Caller should free it after use.
@param[out] DataPtr Points to the data in the communicate buffer. Caller should not free it.
@param[in] DataSize The payload size.
@param[in] Function The function number used to initialize the communicate header.
@retval EFI_SUCCESS Command succeed.
@retval EFI_ACCESS_DENIED SmmCommunicateHeaderSize is more than SPI_COMM_BUFFER_PAGE.
**/
STATIC
EFI_STATUS
InitCommunicateBuffer (
OUT VOID **CommunicateBuffer,
OUT VOID **DataPtr,
IN UINTN DataSize,
IN UINTN Function
)
{
EFI_SMM_COMMUNICATE_HEADER *SmmCommunicateHeader;
SMM_SPI_COMMUNICATE_FUNCTION_HEADER *SmmSpiFunctionHeader;
UINTN SmmCommunicateHeaderSize;
//
// The whole buffer size: SMM_COMMUNICATE_HEADER_SIZE + SMM_SPI_COMMUNICATE_HEADER_SIZE + DataSize.
//
SmmCommunicateHeader = mCommunicateBuffer;
SmmCommunicateHeaderSize = SMM_COMMUNICATE_HEADER_SIZE + SMM_SPI_COMMUNICATE_HEADER_SIZE + DataSize;
if (SmmCommunicateHeaderSize > EFI_PAGES_TO_SIZE (SPI_COMM_BUFFER_PAGE)) {
return EFI_ACCESS_DENIED;
}
ZeroMem (SmmCommunicateHeader, SmmCommunicateHeaderSize);
//
// Prepare data buffer.
//
CopyGuid (&SmmCommunicateHeader->HeaderGuid, &gPchSmmSpiProtocolGuid);
SmmCommunicateHeader->MessageLength = SMM_SPI_COMMUNICATE_HEADER_SIZE + DataSize;
SmmSpiFunctionHeader = (SMM_SPI_COMMUNICATE_FUNCTION_HEADER *) SmmCommunicateHeader->Data;
SmmSpiFunctionHeader->Function = Function;
SmmSpiFunctionHeader->ReturnStatus = EFI_NOT_READY;
*CommunicateBuffer = SmmCommunicateHeader;
if (DataPtr != NULL) {
*DataPtr = SmmSpiFunctionHeader->Data;
}
return EFI_SUCCESS;
}
/**
Send the data in communicate buffer to SMI handler and get response.
@param[in, out] SmmCommunicateHeader The communicate buffer.
@param[in] DataSize The payload size.
@return The status from SMM communication
**/
EFI_STATUS
SendCommunicateBuffer (
IN OUT EFI_SMM_COMMUNICATE_HEADER *SmmCommunicateHeader,
IN UINTN DataSize
)
{
EFI_STATUS Status;
UINTN CommSize;
SMM_SPI_COMMUNICATE_FUNCTION_HEADER *SmmSpiFunctionHeader;
CommSize = SMM_COMMUNICATE_HEADER_SIZE + SMM_SPI_COMMUNICATE_HEADER_SIZE + DataSize;
Status = mSmmCommunication->Communicate (mSmmCommunication, SmmCommunicateHeader, &CommSize);
ASSERT_EFI_ERROR (Status);
SmmSpiFunctionHeader = (SMM_SPI_COMMUNICATE_FUNCTION_HEADER *) SmmCommunicateHeader->Data;
return SmmSpiFunctionHeader->ReturnStatus;
}
/**
Read data from the flash part.
@param[in] This Pointer to the PCH_SPI_PROTOCOL instance.
@param[in] FlashRegionType The Flash Region type for flash cycle which is listed in the Descriptor.
@param[in] Address The Flash Linear Address must fall within a region for which BIOS has access permissions.
@param[in] ByteCount Number of bytes in the data portion of the SPI cycle.
@param[out] Buffer The Pointer to caller-allocated buffer containing the dada received.
It is the caller's responsibility to make sure Buffer is large enough for the total number of bytes read.
@retval EFI_SUCCESS Command succeed.
@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
**/
EFI_STATUS
EFIAPI
SpiFlashRead (
IN PCH_SPI_PROTOCOL *This,
IN FLASH_REGION_TYPE FlashRegionType,
IN UINT32 Address,
IN UINT32 ByteCount,
OUT UINT8 *Buffer
)
{
EFI_STATUS Status;
UINTN PayloadSize;
EFI_SMM_COMMUNICATE_HEADER *SmmCommunicateHeader;
SMM_SPI_FLASH_READ *SmmSpiFlashRead;
UINT32 TempByteCount;
UINT32 Index;
Status = EFI_SUCCESS;
TempByteCount = ByteCount;
Index = 0;
while (TempByteCount > 0) {
//
// Initialize PayloadSize.
//
if (TempByteCount > mMaxDataSize) {
PayloadSize = sizeof (SMM_SPI_FLASH_READ) + mMaxDataSize;
} else {
PayloadSize = sizeof (SMM_SPI_FLASH_READ) + TempByteCount;
}
//
// Initialize the communicate buffer.
//
Status = InitCommunicateBuffer ((VOID **)&SmmCommunicateHeader, (VOID **)&SmmSpiFlashRead, PayloadSize, SPI_FUNCTION_FLASH_READ);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SpiFlashRead - InitCommunicateBuffer fails\n"));
return Status;
}
//
// Fill input data
//
SmmSpiFlashRead->FlashRegionType = FlashRegionType;
SmmSpiFlashRead->Address = Address + Index;
SmmSpiFlashRead->ByteCount = (UINT32)(PayloadSize - sizeof (SMM_SPI_FLASH_READ));
SmmSpiFlashRead->Buffer = (UINT8 *)(SmmSpiFlashRead + 1);
//
// Send data to SMM.
//
Status = SendCommunicateBuffer (SmmCommunicateHeader, PayloadSize);
//
// Check output data
//
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SpiFlashRead - Communication : %r\n", Status));
return Status;
}
CopyMem (Buffer + Index, SmmSpiFlashRead->Buffer, SmmSpiFlashRead->ByteCount);
if (TempByteCount > mMaxDataSize) {
Index += mMaxDataSize;
TempByteCount -= mMaxDataSize;
} else {
break;
}
}
return Status;
}
/**
Write data to the flash part. Remark: Erase may be needed before write to the flash part.
@param[in] This Pointer to the PCH_SPI_PROTOCOL instance.
@param[in] FlashRegionType The Flash Region type for flash cycle which is listed in the Descriptor.
@param[in] Address The Flash Linear Address must fall within a region for which BIOS has access permissions.
@param[in] ByteCount Number of bytes in the data portion of the SPI cycle.
@param[in] Buffer Pointer to caller-allocated buffer containing the data sent during the SPI cycle.
@retval EFI_SUCCESS Command succeed.
@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
**/
EFI_STATUS
EFIAPI
SpiFlashWrite (
IN PCH_SPI_PROTOCOL *This,
IN FLASH_REGION_TYPE FlashRegionType,
IN UINT32 Address,
IN UINT32 ByteCount,
IN UINT8 *Buffer
)
{
EFI_STATUS Status;
UINTN PayloadSize;
EFI_SMM_COMMUNICATE_HEADER *SmmCommunicateHeader;
SMM_SPI_FLASH_WRITE *SmmSpiFlashWrite;
UINT32 TempByteCount;
UINT32 Index;
Status = EFI_SUCCESS;
TempByteCount = ByteCount;
Index = 0;
while (TempByteCount > 0) {
//
// Initialize PayloadSize.
//
if (TempByteCount > mMaxDataSize) {
PayloadSize = sizeof (SMM_SPI_FLASH_WRITE) + mMaxDataSize;
} else {
PayloadSize = sizeof (SMM_SPI_FLASH_WRITE) + TempByteCount;
}
//
// Initialize the communicate buffer.
//
Status = InitCommunicateBuffer ((VOID **)&SmmCommunicateHeader, (VOID **)&SmmSpiFlashWrite, PayloadSize, SPI_FUNCTION_FLASH_WRITE);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SpiFlashWrite - InitCommunicateBuffer fails\n"));
return Status;
}
//
// Fill input data
//
SmmSpiFlashWrite->FlashRegionType = FlashRegionType;
SmmSpiFlashWrite->Address = Address + Index;
SmmSpiFlashWrite->ByteCount = (UINT32)(PayloadSize - sizeof (SMM_SPI_FLASH_WRITE));
SmmSpiFlashWrite->Buffer = (UINT8 *)(SmmSpiFlashWrite + 1);
//
// Send data to SMM.
//
CopyMem (SmmSpiFlashWrite->Buffer, Buffer + Index, SmmSpiFlashWrite->ByteCount);
Status = SendCommunicateBuffer (SmmCommunicateHeader, PayloadSize);
//
// Check output data
//
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SpiFlashWrite - Communication : %r\n", Status));
return Status;
}
if (TempByteCount > mMaxDataSize) {
Index += mMaxDataSize;
TempByteCount -= mMaxDataSize;
} else {
break;
}
}
return Status;
}
/**
Erase some area on the flash part.
@param[in] This Pointer to the PCH_SPI_PROTOCOL instance.
@param[in] FlashRegionType The Flash Region type for flash cycle which is listed in the Descriptor.
@param[in] Address The Flash Linear Address must fall within a region for which BIOS has access permissions.
@param[in] ByteCount Number of bytes in the data portion of the SPI cycle.
@retval EFI_SUCCESS Command succeed.
@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
**/
EFI_STATUS
EFIAPI
SpiFlashErase (
IN PCH_SPI_PROTOCOL *This,
IN FLASH_REGION_TYPE FlashRegionType,
IN UINT32 Address,
IN UINT32 ByteCount
)
{
EFI_STATUS Status;
UINTN PayloadSize;
EFI_SMM_COMMUNICATE_HEADER *SmmCommunicateHeader;
SMM_SPI_FLASH_ERASE *SmmSpiFlashErase;
PayloadSize = sizeof (SMM_SPI_FLASH_ERASE);
//
// Initialize the communicate buffer.
//
Status = InitCommunicateBuffer ((VOID **)&SmmCommunicateHeader, (VOID **)&SmmSpiFlashErase, PayloadSize, SPI_FUNCTION_FLASH_ERASE);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SpiFlashErase - Communication : %r\n", Status));
return Status;
}
//
// Fill input data
//
SmmSpiFlashErase->FlashRegionType = FlashRegionType;
SmmSpiFlashErase->Address = Address;
SmmSpiFlashErase->ByteCount = ByteCount;
//
// Send data to SMM.
//
Status = SendCommunicateBuffer (SmmCommunicateHeader, PayloadSize);
//
// Check output data
//
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SpiFlashErase - Communication : %r\n", Status));
return Status;
}
return Status;
}
/**
Read SFDP data from the flash part.
@param[in] This Pointer to the PCH_SPI_PROTOCOL instance.
@param[in] ComponentNumber The Componen Number for chip select
@param[in] Address The starting byte address for SFDP data read.
@param[in] ByteCount Number of bytes in SFDP data portion of the SPI cycle
@param[out] SfdpData The Pointer to caller-allocated buffer containing the SFDP data received
It is the caller's responsibility to make sure Buffer is large enough for the total number of bytes read
@retval EFI_SUCCESS Command succeed.
@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
**/
EFI_STATUS
EFIAPI
SpiFlashReadSfdp (
IN PCH_SPI_PROTOCOL *This,
IN UINT8 ComponentNumber,
IN UINT32 Address,
IN UINT32 ByteCount,
OUT UINT8 *SfdpData
)
{
EFI_STATUS Status;
UINTN PayloadSize;
EFI_SMM_COMMUNICATE_HEADER *SmmCommunicateHeader;
SMM_SPI_FLASH_READ_SFDP *SmmSpiFlashReadSfdp;
PayloadSize = sizeof (SMM_SPI_FLASH_READ_SFDP) + ByteCount;
//
// Initialize the communicate buffer.
//
Status = InitCommunicateBuffer ((VOID **)&SmmCommunicateHeader, (VOID **)&SmmSpiFlashReadSfdp, PayloadSize, SPI_FUNCTION_FLASH_READ_SFDP);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SpiFlashReadSfdp - InitCommunicateBuffer fails\n"));
return Status;
}
//
// Fill input data
//
SmmSpiFlashReadSfdp->ComponentNumber = ComponentNumber;
SmmSpiFlashReadSfdp->Address = Address;
SmmSpiFlashReadSfdp->ByteCount = ByteCount;
SmmSpiFlashReadSfdp->SfdpData = (UINT8 *)(SmmSpiFlashReadSfdp + 1);
//
// Send data to SMM.
//
Status = SendCommunicateBuffer (SmmCommunicateHeader, PayloadSize);
CopyMem (SfdpData, SmmSpiFlashReadSfdp->SfdpData, ByteCount);
//
// Check output data
//
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SpiFlashReadSfdp - Communication : %r\n", Status));
return Status;
}
return Status;
}
/**
Read Jedec Id from the flash part.
@param[in] This Pointer to the PCH_SPI_PROTOCOL instance.
@param[in] ComponentNumber The Componen Number for chip select
@param[in] ByteCount Number of bytes in JedecId data portion of the SPI cycle, the data size is 3 typically
@param[out] JedecId The Pointer to caller-allocated buffer containing JEDEC ID received
It is the caller's responsibility to make sure Buffer is large enough for the total number of bytes read.
@retval EFI_SUCCESS Command succeed.
@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
**/
EFI_STATUS
EFIAPI
SpiFlashReadJedecId (
IN PCH_SPI_PROTOCOL *This,
IN UINT8 ComponentNumber,
IN UINT32 ByteCount,
OUT UINT8 *JedecId
)
{
EFI_STATUS Status;
UINTN PayloadSize;
EFI_SMM_COMMUNICATE_HEADER *SmmCommunicateHeader;
SMM_SPI_FLASH_READ_JEDEC_ID *SmmSpiFlashReadJedecId;
PayloadSize = sizeof (SMM_SPI_FLASH_READ_JEDEC_ID) + ByteCount;
//
// Initialize the communicate buffer.
//
Status = InitCommunicateBuffer ((VOID **)&SmmCommunicateHeader, (VOID **)&SmmSpiFlashReadJedecId, PayloadSize, SPI_FUNCTION_FLASH_READ_JEDEC_ID);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SpiFlashReadJedecId - InitCommunicateBuffer fails\n"));
return Status;
}
//
// Fill input data
//
SmmSpiFlashReadJedecId->ComponentNumber = ComponentNumber;
SmmSpiFlashReadJedecId->ByteCount = ByteCount;
SmmSpiFlashReadJedecId->JedecId = (UINT8 *)(SmmSpiFlashReadJedecId + 1);
//
// Send data to SMM.
//
Status = SendCommunicateBuffer (SmmCommunicateHeader, PayloadSize);
CopyMem (JedecId, SmmSpiFlashReadJedecId->JedecId, ByteCount);
//
// Check output data
//
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SpiFlashReadJedecId - Communication : %r\n", Status));
return Status;
}
return Status;
}
/**
Write the status register in the flash part.
@param[in] This Pointer to the PCH_SPI_PROTOCOL instance.
@param[in] ByteCount Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
@param[in] StatusValue The Pointer to caller-allocated buffer containing the value of Status register writing
@retval EFI_SUCCESS Command succeed.
@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
**/
EFI_STATUS
EFIAPI
SpiFlashWriteStatus (
IN PCH_SPI_PROTOCOL *This,
IN UINT32 ByteCount,
IN UINT8 *StatusValue
)
{
EFI_STATUS Status;
UINTN PayloadSize;
EFI_SMM_COMMUNICATE_HEADER *SmmCommunicateHeader;
SMM_SPI_FLASH_WRITE_STATUS *SmmSpiFlashWriteStatus;
PayloadSize = sizeof (SMM_SPI_FLASH_WRITE_STATUS) + ByteCount;
//
// Initialize the communicate buffer.
//
Status = InitCommunicateBuffer ((VOID **)&SmmCommunicateHeader, (VOID **)&SmmSpiFlashWriteStatus, PayloadSize, SPI_FUNCTION_FLASH_WRITE_STATUS);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SpiFlashWriteStatus - InitCommunicateBuffer fails\n"));
return Status;
}
//
// Fill input data
//
SmmSpiFlashWriteStatus->ByteCount = ByteCount;
SmmSpiFlashWriteStatus->StatusValue = (UINT8 *)(SmmSpiFlashWriteStatus + 1);
//
// Send data to SMM.
//
CopyMem (SmmSpiFlashWriteStatus->StatusValue, StatusValue, ByteCount);
Status = SendCommunicateBuffer (SmmCommunicateHeader, PayloadSize);
//
// Check output data
//
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SpiFlashWriteStatus - Communication : %r\n", Status));
return Status;
}
return Status;
}
/**
Read status register in the flash part.
@param[in] This Pointer to the PCH_SPI_PROTOCOL instance.
@param[in] ByteCount Number of bytes in Status data portion of the SPI cycle, the data size is 1 typically
@param[out] StatusValue The Pointer to caller-allocated buffer containing the value of Status register received.
@retval EFI_SUCCESS Command succeed.
@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
**/
EFI_STATUS
EFIAPI
SpiFlashReadStatus (
IN PCH_SPI_PROTOCOL *This,
IN UINT32 ByteCount,
OUT UINT8 *StatusValue
)
{
EFI_STATUS Status;
UINTN PayloadSize;
EFI_SMM_COMMUNICATE_HEADER *SmmCommunicateHeader;
SMM_SPI_FLASH_READ_STATUS *SmmSpiFlashReadStatus;
PayloadSize = sizeof (SMM_SPI_FLASH_READ_STATUS) + ByteCount;
//
// Initialize the communicate buffer.
//
Status = InitCommunicateBuffer ((VOID **)&SmmCommunicateHeader, (VOID **)&SmmSpiFlashReadStatus, PayloadSize, SPI_FUNCTION_FLASH_READ_STATUS);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SpiFlashReadStatus - InitCommunicateBuffer fails\n"));
return Status;
}
//
// Fill input data
//
SmmSpiFlashReadStatus->ByteCount = ByteCount;
SmmSpiFlashReadStatus->StatusValue = (UINT8 *)(SmmSpiFlashReadStatus + 1);
//
// Send data to SMM.
//
Status = SendCommunicateBuffer (SmmCommunicateHeader, PayloadSize);
CopyMem (StatusValue, SmmSpiFlashReadStatus->StatusValue, ByteCount);
//
// Check output data
//
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SpiFlashReadStatus - Communication : %r\n", Status));
return Status;
}
return Status;
}
/**
Get the SPI region base and size, based on the enum type
@param[in] This Pointer to the PCH_SPI_PROTOCOL instance.
@param[in] FlashRegionType The Flash Region type for for the base address which is listed in the Descriptor.
@param[out] BaseAddress The Flash Linear Address for the Region 'n' Base
@param[out] RegionSize The size for the Region 'n'
@retval EFI_SUCCESS Read success
@retval EFI_INVALID_PARAMETER Invalid region type given
@retval EFI_DEVICE_ERROR The region is not used
**/
EFI_STATUS
EFIAPI
SpiGetRegionAddress (
IN PCH_SPI_PROTOCOL *This,
IN FLASH_REGION_TYPE FlashRegionType,
OUT UINT32 *BaseAddress,
OUT UINT32 *RegionSize
)
{
EFI_STATUS Status;
UINTN PayloadSize;
EFI_SMM_COMMUNICATE_HEADER *SmmCommunicateHeader;
SMM_SPI_GET_REGION_ADDRESS *SmmSpiGetRegionAddress;
PayloadSize = sizeof (SMM_SPI_GET_REGION_ADDRESS) + sizeof (UINT32) + sizeof (UINT32);
//
// Initialize the communicate buffer.
//
Status = InitCommunicateBuffer ((VOID **)&SmmCommunicateHeader, (VOID **)&SmmSpiGetRegionAddress, PayloadSize, SPI_FUNCTION_GET_REGION_ADDRESS);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SpiGetRegionAddress - InitCommunicateBuffer fails\n"));
return Status;
}
//
// Fill input data
//
SmmSpiGetRegionAddress->FlashRegionType = FlashRegionType;
SmmSpiGetRegionAddress->BaseAddress = (UINT32 *)(SmmSpiGetRegionAddress + 1);
SmmSpiGetRegionAddress->RegionSize = (UINT32 *)(SmmSpiGetRegionAddress + 1) + 1;
//
// Send data to SMM.
//
Status = SendCommunicateBuffer (SmmCommunicateHeader, PayloadSize);
CopyMem (BaseAddress, SmmSpiGetRegionAddress->BaseAddress, sizeof (UINT32));
CopyMem (RegionSize, SmmSpiGetRegionAddress->RegionSize, sizeof (UINT32));
//
// Check output data
//
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SpiGetRegionAddress - Communication : %r\n", Status));
return Status;
}
return Status;
}
/**
Read PCH Soft Strap Values
@param[in] This Pointer to the PCH_SPI_PROTOCOL instance.
@param[in] SoftStrapAddr PCH Soft Strap address offset from FPSBA.
@param[in] ByteCount Number of bytes in SoftStrap data portion of the SPI cycle
@param[out] SoftStrapValue The Pointer to caller-allocated buffer containing PCH Soft Strap Value.
If the value of ByteCount is 0, the data type of SoftStrapValue should be UINT16 and SoftStrapValue will be PCH Soft Strap Length
It is the caller's responsibility to make sure Buffer is large enough for the total number of bytes read.
@retval EFI_SUCCESS Command succeed.
@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
**/
EFI_STATUS
EFIAPI
SpiReadPchSoftStrap (
IN PCH_SPI_PROTOCOL *This,
IN UINT32 SoftStrapAddr,
IN UINT32 ByteCount,
OUT VOID *SoftStrapValue
)
{
EFI_STATUS Status;
UINTN PayloadSize;
EFI_SMM_COMMUNICATE_HEADER *SmmCommunicateHeader;
SMM_SPI_READ_PCH_SOFTSTRAP *SmmSpiReadPchSoftStrap;
PayloadSize = sizeof (SMM_SPI_READ_PCH_SOFTSTRAP) + ByteCount;
//
// Initialize the communicate buffer.
//
Status = InitCommunicateBuffer ((VOID **)&SmmCommunicateHeader, (VOID **)&SmmSpiReadPchSoftStrap, PayloadSize, SPI_FUNCTION_READ_PCH_SOFTSTRAP);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SpiReadPchSoftStrap - InitCommunicateBuffer fails\n"));
return Status;
}
//
// Fill input data
//
SmmSpiReadPchSoftStrap->SoftStrapAddr = SoftStrapAddr;
SmmSpiReadPchSoftStrap->ByteCount = ByteCount;
SmmSpiReadPchSoftStrap->SoftStrapValue = (UINT8 *)(SmmSpiReadPchSoftStrap + 1);
//
// Send data to SMM.
//
Status = SendCommunicateBuffer (SmmCommunicateHeader, PayloadSize);
CopyMem (SoftStrapValue, SmmSpiReadPchSoftStrap->SoftStrapValue, ByteCount);
//
// Check output data
//
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SpiReadPchSoftStrap - Communication : %r\n", Status));
return Status;
}
return Status;
}
/**
Read CPU Soft Strap Values
@param[in] This Pointer to the PCH_SPI_PROTOCOL instance.
@param[in] SoftStrapAddr CPU Soft Strap address offset from FCPUSBA.
@param[in] ByteCount Number of bytes in SoftStrap data portion of the SPI cycle.
@param[out] SoftStrapValue The Pointer to caller-allocated buffer containing CPU Soft Strap Value.
If the value of ByteCount is 0, the data type of SoftStrapValue should be UINT16 and SoftStrapValue will be PCH Soft Strap Length
It is the caller's responsibility to make sure Buffer is large enough for the total number of bytes read.
@retval EFI_SUCCESS Command succeed.
@retval EFI_INVALID_PARAMETER The parameters specified are not valid.
@retval EFI_DEVICE_ERROR Device error, command aborts abnormally.
**/
EFI_STATUS
EFIAPI
SpiReadCpuSoftStrap (
IN PCH_SPI_PROTOCOL *This,
IN UINT32 SoftStrapAddr,
IN UINT32 ByteCount,
OUT VOID *SoftStrapValue
)
{
EFI_STATUS Status;
UINTN PayloadSize;
EFI_SMM_COMMUNICATE_HEADER *SmmCommunicateHeader;
SMM_SPI_READ_CPU_SOFTSTRAP *SmmSpiReadCpuSoftStrap;
PayloadSize = sizeof (SMM_SPI_READ_CPU_SOFTSTRAP) + ByteCount;
//
// Initialize the communicate buffer.
//
Status = InitCommunicateBuffer ((VOID **)&SmmCommunicateHeader, (VOID **)&SmmSpiReadCpuSoftStrap, PayloadSize, SPI_FUNCTION_READ_CPU_SOFTSTRAP);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SpiReadCpuSoftStrap - InitCommunicateBuffer fails\n"));
return Status;
}
//
// Fill input data
//
SmmSpiReadCpuSoftStrap->SoftStrapAddr = SoftStrapAddr;
SmmSpiReadCpuSoftStrap->ByteCount = ByteCount;
SmmSpiReadCpuSoftStrap->SoftStrapValue = (UINT8 *)(SmmSpiReadCpuSoftStrap + 1);
//
// Send data to SMM.
//
Status = SendCommunicateBuffer (SmmCommunicateHeader, PayloadSize);
CopyMem (SoftStrapValue, SmmSpiReadCpuSoftStrap->SoftStrapValue, ByteCount);
//
// Check output data
//
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "SpiReadCpuSoftStrap - Communication : %r\n", Status));
return Status;
}
return Status;
}
PCH_SPI_PROTOCOL mSpiProtocol = {
PCH_SPI_SERVICES_REVISION,
SpiFlashRead,
SpiFlashWrite,
SpiFlashErase,
SpiFlashReadSfdp,
SpiFlashReadJedecId,
SpiFlashWriteStatus,
SpiFlashReadStatus,
SpiGetRegionAddress,
SpiReadPchSoftStrap,
SpiReadCpuSoftStrap,
};
/**
SPI DXE Module Entry Point.
@param[in] ImageHandle Image handle of this driver.
@param[in] SystemTable Global system service table.
@retval EFI_SUCCESS Initialization complete.
@exception EFI_UNSUPPORTED The chipset is unsupported by this driver.
@retval EFI_OUT_OF_RESOURCES Do not have enough resources to initialize the driver.
@retval EFI_DEVICE_ERROR Device error, driver exits abnormally.
**/
EFI_STATUS
EFIAPI
InstallSpiSmmDxe (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
EFI_HANDLE Handle;
DEBUG ((DEBUG_INFO, "InstallSpiSmmDxe() Start\n"));
Status = gBS->LocateProtocol (&gEfiSmmCommunicationProtocolGuid, NULL, (VOID **) &mSmmCommunication);
ASSERT_EFI_ERROR (Status);
mCommunicateBuffer = AllocateRuntimePages (SPI_COMM_BUFFER_PAGE);
ASSERT (mCommunicateBuffer != NULL);
Handle = NULL;
Status = gBS->InstallMultipleProtocolInterfaces (
&Handle,
&gPchSpiProtocolGuid,
&mSpiProtocol,
NULL
);
ASSERT_EFI_ERROR (Status);
DEBUG ((DEBUG_INFO, "InstallSpiSmmDxe() End\n"));
return Status;
}
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