diff options
Diffstat (limited to 'SecurityPkg/Tcg/TcgPei/TisPei.c')
| -rw-r--r-- | SecurityPkg/Tcg/TcgPei/TisPei.c | 160 |
1 files changed, 0 insertions, 160 deletions
diff --git a/SecurityPkg/Tcg/TcgPei/TisPei.c b/SecurityPkg/Tcg/TcgPei/TisPei.c deleted file mode 100644 index 97d9628bda..0000000000 --- a/SecurityPkg/Tcg/TcgPei/TisPei.c +++ /dev/null @@ -1,160 +0,0 @@ -/** @file
- TIS (TPM Interface Specification) functions used by TPM PEI driver.
-
-Copyright (c) 2005 - 2011, 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 <IndustryStandard/Tpm12.h>
-#include <IndustryStandard/UefiTcgPlatform.h>
-#include <Library/TpmCommLib.h>
-#include <Library/DebugLib.h>
-#include <Library/BaseLib.h>
-#include <Library/IoLib.h>
-#include <Library/BaseMemoryLib.h>
-
-/**
- Send a command to TPM for execution and return response data.
-
- @param[in] PeiServices Describes the list of possible PEI Services.
- @param[in] TisReg TPM register space base address.
- @param[in] BufferIn Buffer for command data.
- @param[in] SizeIn Size of command data.
- @param[in, out] BufferOut Buffer for response data.
- @param[in, out] SizeOut Size of response data.
-
- @retval EFI_SUCCESS Operation completed successfully.
- @retval EFI_TIMEOUT The register can't run into the expected status in time.
- @retval EFI_BUFFER_TOO_SMALL Response data buffer is too small.
- @retval EFI_DEVICE_ERROR Unexpected device behavior.
-
-**/
-EFI_STATUS
-TisTpmCommand (
- IN EFI_PEI_SERVICES **PeiServices,
- IN TIS_PC_REGISTERS_PTR TisReg,
- IN UINT8 *BufferIn,
- IN UINT32 SizeIn,
- IN OUT UINT8 *BufferOut,
- IN OUT UINT32 *SizeOut
- )
-{
- EFI_STATUS Status;
- UINT16 BurstCount;
- UINT32 Index;
- UINT32 TpmOutSize;
- UINT16 Data16;
- UINT32 Data32;
-
- Status = TisPcPrepareCommand (TisReg);
- if (EFI_ERROR (Status)){
- DEBUG ((DEBUG_ERROR, "Tpm is not ready for command!\n"));
- return Status;
- }
- //
- // Send the command data to Tpm
- //
- Index = 0;
- while (Index < SizeIn) {
- Status = TisPcReadBurstCount (TisReg, &BurstCount);
- if (EFI_ERROR (Status)) {
- Status = EFI_TIMEOUT;
- goto Exit;
- }
- for (; BurstCount > 0 && Index < SizeIn; BurstCount--) {
- MmioWrite8((UINTN)&TisReg->DataFifo, *(BufferIn + Index));
- Index++;
- }
- }
- //
- // Check the Tpm status STS_EXPECT change from 1 to 0
- //
- Status = TisPcWaitRegisterBits (
- &TisReg->Status,
- (UINT8) TIS_PC_VALID,
- TIS_PC_STS_EXPECT,
- TIS_TIMEOUT_C
- );
- if (EFI_ERROR (Status)) {
- DEBUG ((DEBUG_ERROR, "The send buffer too small!\n"));
- Status = EFI_BUFFER_TOO_SMALL;
- goto Exit;
- }
- //
- // Executed the TPM command and waiting for the response data ready
- //
- MmioWrite8((UINTN)&TisReg->Status, TIS_PC_STS_GO);
- Status = TisPcWaitRegisterBits (
- &TisReg->Status,
- (UINT8) (TIS_PC_VALID | TIS_PC_STS_DATA),
- 0,
- TIS_TIMEOUT_B
- );
- if (EFI_ERROR (Status)) {
- DEBUG ((DEBUG_ERROR, "Wait for Tpm response data time out!!\n"));
- Status = EFI_TIMEOUT;
- goto Exit;
- }
- //
- // Get response data header
- //
- Index = 0;
- BurstCount = 0;
- while (Index < sizeof (TPM_RSP_COMMAND_HDR)) {
- Status = TisPcReadBurstCount (TisReg, &BurstCount);
- if (EFI_ERROR (Status)) {
- Status = EFI_TIMEOUT;
- goto Exit;
- }
- for (; BurstCount > 0; BurstCount--) {
- *(BufferOut + Index) = MmioRead8 ((UINTN)&TisReg->DataFifo);
- Index++;
- if (Index == sizeof (TPM_RSP_COMMAND_HDR)) break;
- }
- }
- //
- // Check the reponse data header (tag,parasize and returncode )
- //
- CopyMem (&Data16, BufferOut, sizeof (UINT16));
- if (SwapBytes16 (Data16) != TPM_TAG_RSP_COMMAND ) {
- Status = EFI_DEVICE_ERROR;
- goto Exit;
- }
-
- CopyMem (&Data32, (BufferOut + 2), sizeof (UINT32));
- TpmOutSize = SwapBytes32 (Data32);
- if (*SizeOut < TpmOutSize) {
- Status = EFI_BUFFER_TOO_SMALL;
- goto Exit;
- }
- *SizeOut = TpmOutSize;
- //
- // Continue reading the remaining data
- //
- while ( Index < TpmOutSize ) {
- for (; BurstCount > 0; BurstCount--) {
- *(BufferOut + Index) = MmioRead8 ((UINTN)&TisReg->DataFifo);
- Index++;
- if (Index == TpmOutSize) {
- Status = EFI_SUCCESS;
- goto Exit;
- }
- }
- Status = TisPcReadBurstCount (TisReg, &BurstCount);
- if (EFI_ERROR (Status)) {
- Status = EFI_TIMEOUT;
- goto Exit;
- }
- }
-Exit:
- MmioWrite8((UINTN)&TisReg->Status, TIS_PC_STS_READY);
- return Status;
-}
-
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