diff options
Diffstat (limited to 'SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2Tis.c')
| -rw-r--r-- | SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2Tis.c | 180 |
1 files changed, 100 insertions, 80 deletions
diff --git a/SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2Tis.c b/SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2Tis.c index a3c84d8ab4..49539b78d8 100644 --- a/SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2Tis.c +++ b/SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2Tis.c @@ -19,12 +19,12 @@ SPDX-License-Identifier: BSD-2-Clause-Patent #include <IndustryStandard/TpmTis.h>
-#define TIS_TIMEOUT_MAX (90000 * 1000) // 90s
+#define TIS_TIMEOUT_MAX (90000 * 1000) // 90s
//
// Max TPM command/response length
//
-#define TPMCMDBUFLENGTH 0x500
+#define TPMCMDBUFLENGTH 0x500
/**
Check whether TPM chip exist.
@@ -36,10 +36,10 @@ SPDX-License-Identifier: BSD-2-Clause-Patent **/
BOOLEAN
TisPcPresenceCheck (
- IN TIS_PC_REGISTERS_PTR TisReg
+ IN TIS_PC_REGISTERS_PTR TisReg
)
{
- UINT8 RegRead;
+ UINT8 RegRead;
RegRead = MmioRead8 ((UINTN)&TisReg->Access);
return (BOOLEAN)(RegRead != (UINT8)-1);
@@ -58,21 +58,24 @@ TisPcPresenceCheck ( **/
EFI_STATUS
TisPcWaitRegisterBits (
- IN UINT8 *Register,
- IN UINT8 BitSet,
- IN UINT8 BitClear,
- IN UINT32 TimeOut
+ IN UINT8 *Register,
+ IN UINT8 BitSet,
+ IN UINT8 BitClear,
+ IN UINT32 TimeOut
)
{
- UINT8 RegRead;
- UINT32 WaitTime;
+ UINT8 RegRead;
+ UINT32 WaitTime;
- for (WaitTime = 0; WaitTime < TimeOut; WaitTime += 30){
+ for (WaitTime = 0; WaitTime < TimeOut; WaitTime += 30) {
RegRead = MmioRead8 ((UINTN)Register);
- if ((RegRead & BitSet) == BitSet && (RegRead & BitClear) == 0)
+ if (((RegRead & BitSet) == BitSet) && ((RegRead & BitClear) == 0)) {
return EFI_SUCCESS;
+ }
+
MicroSecondDelay (30);
}
+
return EFI_TIMEOUT;
}
@@ -89,15 +92,15 @@ TisPcWaitRegisterBits ( **/
EFI_STATUS
TisPcReadBurstCount (
- IN TIS_PC_REGISTERS_PTR TisReg,
- OUT UINT16 *BurstCount
+ IN TIS_PC_REGISTERS_PTR TisReg,
+ OUT UINT16 *BurstCount
)
{
- UINT32 WaitTime;
- UINT8 DataByte0;
- UINT8 DataByte1;
+ UINT32 WaitTime;
+ UINT8 DataByte0;
+ UINT8 DataByte1;
- if (BurstCount == NULL || TisReg == NULL) {
+ if ((BurstCount == NULL) || (TisReg == NULL)) {
return EFI_INVALID_PARAMETER;
}
@@ -113,6 +116,7 @@ TisPcReadBurstCount ( if (*BurstCount != 0) {
return EFI_SUCCESS;
}
+
MicroSecondDelay (30);
WaitTime += 30;
} while (WaitTime < TIS_TIMEOUT_D);
@@ -132,16 +136,16 @@ TisPcReadBurstCount ( **/
EFI_STATUS
TisPcPrepareCommand (
- IN TIS_PC_REGISTERS_PTR TisReg
+ IN TIS_PC_REGISTERS_PTR TisReg
)
{
- EFI_STATUS Status;
+ EFI_STATUS Status;
if (TisReg == NULL) {
return EFI_INVALID_PARAMETER;
}
- MmioWrite8((UINTN)&TisReg->Status, TIS_PC_STS_READY);
+ MmioWrite8 ((UINTN)&TisReg->Status, TIS_PC_STS_READY);
Status = TisPcWaitRegisterBits (
&TisReg->Status,
TIS_PC_STS_READY,
@@ -164,10 +168,10 @@ TisPcPrepareCommand ( **/
EFI_STATUS
TisPcRequestUseTpm (
- IN TIS_PC_REGISTERS_PTR TisReg
+ IN TIS_PC_REGISTERS_PTR TisReg
)
{
- EFI_STATUS Status;
+ EFI_STATUS Status;
if (TisReg == NULL) {
return EFI_INVALID_PARAMETER;
@@ -177,7 +181,7 @@ TisPcRequestUseTpm ( return EFI_NOT_FOUND;
}
- MmioWrite8((UINTN)&TisReg->Access, TIS_PC_ACC_RQUUSE);
+ MmioWrite8 ((UINTN)&TisReg->Access, TIS_PC_ACC_RQUUSE);
Status = TisPcWaitRegisterBits (
&TisReg->Access,
(UINT8)(TIS_PC_ACC_ACTIVE |TIS_PC_VALID),
@@ -204,47 +208,51 @@ TisPcRequestUseTpm ( **/
EFI_STATUS
Tpm2TisTpmCommand (
- IN TIS_PC_REGISTERS_PTR TisReg,
- IN UINT8 *BufferIn,
- IN UINT32 SizeIn,
- IN OUT UINT8 *BufferOut,
- IN OUT UINT32 *SizeOut
+ 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;
+ EFI_STATUS Status;
+ UINT16 BurstCount;
+ UINT32 Index;
+ UINT32 TpmOutSize;
+ UINT16 Data16;
+ UINT32 Data32;
DEBUG_CODE_BEGIN ();
- UINTN DebugSize;
+ UINTN DebugSize;
- DEBUG ((DEBUG_VERBOSE, "Tpm2TisTpmCommand Send - "));
- if (SizeIn > 0x100) {
- DebugSize = 0x40;
- } else {
- DebugSize = SizeIn;
- }
- for (Index = 0; Index < DebugSize; Index++) {
+ DEBUG ((DEBUG_VERBOSE, "Tpm2TisTpmCommand Send - "));
+ if (SizeIn > 0x100) {
+ DebugSize = 0x40;
+ } else {
+ DebugSize = SizeIn;
+ }
+
+ for (Index = 0; Index < DebugSize; Index++) {
+ DEBUG ((DEBUG_VERBOSE, "%02x ", BufferIn[Index]));
+ }
+
+ if (DebugSize != SizeIn) {
+ DEBUG ((DEBUG_VERBOSE, "...... "));
+ for (Index = SizeIn - 0x20; Index < SizeIn; Index++) {
DEBUG ((DEBUG_VERBOSE, "%02x ", BufferIn[Index]));
}
- if (DebugSize != SizeIn) {
- DEBUG ((DEBUG_VERBOSE, "...... "));
- for (Index = SizeIn - 0x20; Index < SizeIn; Index++) {
- DEBUG ((DEBUG_VERBOSE, "%02x ", BufferIn[Index]));
- }
- }
- DEBUG ((DEBUG_VERBOSE, "\n"));
+ }
+
+ DEBUG ((DEBUG_VERBOSE, "\n"));
DEBUG_CODE_END ();
TpmOutSize = 0;
Status = TisPcPrepareCommand (TisReg);
- if (EFI_ERROR (Status)){
+ if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "Tpm2 is not ready for command!\n"));
return EFI_DEVICE_ERROR;
}
+
//
// Send the command data to Tpm
//
@@ -255,17 +263,19 @@ Tpm2TisTpmCommand ( Status = EFI_DEVICE_ERROR;
goto Exit;
}
- for (; BurstCount > 0 && Index < SizeIn; BurstCount--) {
- MmioWrite8((UINTN)&TisReg->DataFifo, *(BufferIn + Index));
+
+ 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,
+ (UINT8)TIS_PC_VALID,
TIS_PC_STS_EXPECT,
TIS_TIMEOUT_C
);
@@ -274,17 +284,18 @@ Tpm2TisTpmCommand ( 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);
+ MmioWrite8 ((UINTN)&TisReg->Status, TIS_PC_STS_GO);
//
// NOTE: That may take many seconds to minutes for certain commands, such as key generation.
//
Status = TisPcWaitRegisterBits (
&TisReg->Status,
- (UINT8) (TIS_PC_VALID | TIS_PC_STS_DATA),
+ (UINT8)(TIS_PC_VALID | TIS_PC_STS_DATA),
0,
TIS_TIMEOUT_MAX
);
@@ -295,10 +306,10 @@ Tpm2TisTpmCommand ( //
DEBUG ((DEBUG_ERROR, "Wait for Tpm2 response data time out. Trying to cancel the command!!\n"));
- MmioWrite32((UINTN)&TisReg->Status, TIS_PC_STS_CANCEL);
+ MmioWrite32 ((UINTN)&TisReg->Status, TIS_PC_STS_CANCEL);
Status = TisPcWaitRegisterBits (
&TisReg->Status,
- (UINT8) (TIS_PC_VALID | TIS_PC_STS_DATA),
+ (UINT8)(TIS_PC_VALID | TIS_PC_STS_DATA),
0,
TIS_TIMEOUT_B
);
@@ -318,7 +329,7 @@ Tpm2TisTpmCommand ( //
// Get response data header
//
- Index = 0;
+ Index = 0;
BurstCount = 0;
while (Index < sizeof (TPM2_RESPONSE_HEADER)) {
Status = TisPcReadBurstCount (TisReg, &BurstCount);
@@ -326,18 +337,23 @@ Tpm2TisTpmCommand ( Status = EFI_DEVICE_ERROR;
goto Exit;
}
- for (; BurstCount > 0; BurstCount--) {
+
+ for ( ; BurstCount > 0; BurstCount--) {
*(BufferOut + Index) = MmioRead8 ((UINTN)&TisReg->DataFifo);
Index++;
- if (Index == sizeof (TPM2_RESPONSE_HEADER)) break;
+ if (Index == sizeof (TPM2_RESPONSE_HEADER)) {
+ break;
+ }
}
}
+
DEBUG_CODE_BEGIN ();
- DEBUG ((DEBUG_VERBOSE, "Tpm2TisTpmCommand ReceiveHeader - "));
- for (Index = 0; Index < sizeof (TPM2_RESPONSE_HEADER); Index++) {
- DEBUG ((DEBUG_VERBOSE, "%02x ", BufferOut[Index]));
- }
- DEBUG ((DEBUG_VERBOSE, "\n"));
+ DEBUG ((DEBUG_VERBOSE, "Tpm2TisTpmCommand ReceiveHeader - "));
+ for (Index = 0; Index < sizeof (TPM2_RESPONSE_HEADER); Index++) {
+ DEBUG ((DEBUG_VERBOSE, "%02x ", BufferOut[Index]));
+ }
+
+ DEBUG ((DEBUG_VERBOSE, "\n"));
DEBUG_CODE_END ();
//
// Check the response data header (tag,parasize and returncode )
@@ -351,17 +367,18 @@ Tpm2TisTpmCommand ( }
CopyMem (&Data32, (BufferOut + 2), sizeof (UINT32));
- TpmOutSize = SwapBytes32 (Data32);
+ 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--) {
+ for ( ; BurstCount > 0; BurstCount--) {
*(BufferOut + Index) = MmioRead8 ((UINTN)&TisReg->DataFifo);
Index++;
if (Index == TpmOutSize) {
@@ -369,21 +386,24 @@ Tpm2TisTpmCommand ( goto Exit;
}
}
+
Status = TisPcReadBurstCount (TisReg, &BurstCount);
if (EFI_ERROR (Status)) {
Status = EFI_DEVICE_ERROR;
goto Exit;
}
}
+
Exit:
DEBUG_CODE_BEGIN ();
- DEBUG ((DEBUG_VERBOSE, "Tpm2TisTpmCommand Receive - "));
- for (Index = 0; Index < TpmOutSize; Index++) {
- DEBUG ((DEBUG_VERBOSE, "%02x ", BufferOut[Index]));
- }
- DEBUG ((DEBUG_VERBOSE, "\n"));
+ DEBUG ((DEBUG_VERBOSE, "Tpm2TisTpmCommand Receive - "));
+ for (Index = 0; Index < TpmOutSize; Index++) {
+ DEBUG ((DEBUG_VERBOSE, "%02x ", BufferOut[Index]));
+ }
+
+ DEBUG ((DEBUG_VERBOSE, "\n"));
DEBUG_CODE_END ();
- MmioWrite8((UINTN)&TisReg->Status, TIS_PC_STS_READY);
+ MmioWrite8 ((UINTN)&TisReg->Status, TIS_PC_STS_READY);
return Status;
}
@@ -402,14 +422,14 @@ Exit: EFI_STATUS
EFIAPI
DTpm2TisSubmitCommand (
- IN UINT32 InputParameterBlockSize,
- IN UINT8 *InputParameterBlock,
- IN OUT UINT32 *OutputParameterBlockSize,
- IN UINT8 *OutputParameterBlock
+ IN UINT32 InputParameterBlockSize,
+ IN UINT8 *InputParameterBlock,
+ IN OUT UINT32 *OutputParameterBlockSize,
+ IN UINT8 *OutputParameterBlock
)
{
return Tpm2TisTpmCommand (
- (TIS_PC_REGISTERS_PTR) (UINTN) PcdGet64 (PcdTpmBaseAddress),
+ (TIS_PC_REGISTERS_PTR)(UINTN)PcdGet64 (PcdTpmBaseAddress),
InputParameterBlock,
InputParameterBlockSize,
OutputParameterBlock,
@@ -430,5 +450,5 @@ DTpm2TisRequestUseTpm ( VOID
)
{
- return TisPcRequestUseTpm ((TIS_PC_REGISTERS_PTR) (UINTN) PcdGet64 (PcdTpmBaseAddress));
+ return TisPcRequestUseTpm ((TIS_PC_REGISTERS_PTR)(UINTN)PcdGet64 (PcdTpmBaseAddress));
}
|