diff options
| -rw-r--r-- | SecurityPkg/Library/Tpm12DeviceLibDTpm/Tpm12Tis.c | 99 |
1 files changed, 58 insertions, 41 deletions
diff --git a/SecurityPkg/Library/Tpm12DeviceLibDTpm/Tpm12Tis.c b/SecurityPkg/Library/Tpm12DeviceLibDTpm/Tpm12Tis.c index eaaf065245..4e04299f23 100644 --- a/SecurityPkg/Library/Tpm12DeviceLibDTpm/Tpm12Tis.c +++ b/SecurityPkg/Library/Tpm12DeviceLibDTpm/Tpm12Tis.c @@ -58,6 +58,44 @@ Tpm12TisPcPresenceCheck ( }
/**
+ Return PTP interface type.
+
+ @param[in] Register Pointer to PTP register.
+
+ @return PTP interface type.
+**/
+PTP_INTERFACE_TYPE
+Tpm12GetPtpInterface (
+ IN VOID *Register
+ )
+{
+ PTP_CRB_INTERFACE_IDENTIFIER InterfaceId;
+ PTP_FIFO_INTERFACE_CAPABILITY InterfaceCapability;
+
+ if (!Tpm12TisPcPresenceCheck (Register)) {
+ return PtpInterfaceMax;
+ }
+ //
+ // Check interface id
+ //
+ InterfaceId.Uint32 = MmioRead32 ((UINTN)&((PTP_CRB_REGISTERS *)Register)->InterfaceId);
+ InterfaceCapability.Uint32 = MmioRead32 ((UINTN)&((PTP_FIFO_REGISTERS *)Register)->InterfaceCapability);
+
+ if ((InterfaceId.Bits.InterfaceType == PTP_INTERFACE_IDENTIFIER_INTERFACE_TYPE_CRB) &&
+ (InterfaceId.Bits.InterfaceVersion == PTP_INTERFACE_IDENTIFIER_INTERFACE_VERSION_CRB) &&
+ (InterfaceId.Bits.CapCRB != 0)) {
+ return PtpInterfaceCrb;
+ }
+ if ((InterfaceId.Bits.InterfaceType == PTP_INTERFACE_IDENTIFIER_INTERFACE_TYPE_FIFO) &&
+ (InterfaceId.Bits.InterfaceVersion == PTP_INTERFACE_IDENTIFIER_INTERFACE_VERSION_FIFO) &&
+ (InterfaceId.Bits.CapFIFO != 0) &&
+ (InterfaceCapability.Bits.InterfaceVersion == INTERFACE_CAPABILITY_INTERFACE_VERSION_PTP)) {
+ return PtpInterfaceFifo;
+ }
+ return PtpInterfaceTis;
+}
+
+/**
Check whether the value of a TPM chip register satisfies the input BIT setting.
@param[in] Register Address port of register to be checked.
@@ -393,51 +431,30 @@ Tpm12SubmitCommand ( IN UINT8 *OutputParameterBlock
)
{
- return Tpm12TisTpmCommand (
- (TIS_PC_REGISTERS_PTR) (UINTN) PcdGet64 (PcdTpmBaseAddress),
- InputParameterBlock,
- InputParameterBlockSize,
- OutputParameterBlock,
- OutputParameterBlockSize
- );
-}
-
-/**
- Return PTP interface type.
-
- @param[in] Register Pointer to PTP register.
-
- @return PTP interface type.
-**/
-PTP_INTERFACE_TYPE
-Tpm12GetPtpInterface (
- IN VOID *Register
- )
-{
- PTP_CRB_INTERFACE_IDENTIFIER InterfaceId;
- PTP_FIFO_INTERFACE_CAPABILITY InterfaceCapability;
+ PTP_INTERFACE_TYPE PtpInterface;
- if (!Tpm12TisPcPresenceCheck (Register)) {
- return PtpInterfaceMax;
- }
//
- // Check interface id
+ // Special handle for TPM1.2 to check PTP too, because PTP/TIS share same register address.
//
- InterfaceId.Uint32 = MmioRead32 ((UINTN)&((PTP_CRB_REGISTERS *)Register)->InterfaceId);
- InterfaceCapability.Uint32 = MmioRead32 ((UINTN)&((PTP_FIFO_REGISTERS *)Register)->InterfaceCapability);
-
- if ((InterfaceId.Bits.InterfaceType == PTP_INTERFACE_IDENTIFIER_INTERFACE_TYPE_CRB) &&
- (InterfaceId.Bits.InterfaceVersion == PTP_INTERFACE_IDENTIFIER_INTERFACE_VERSION_CRB) &&
- (InterfaceId.Bits.CapCRB != 0)) {
- return PtpInterfaceCrb;
- }
- if ((InterfaceId.Bits.InterfaceType == PTP_INTERFACE_IDENTIFIER_INTERFACE_TYPE_FIFO) &&
- (InterfaceId.Bits.InterfaceVersion == PTP_INTERFACE_IDENTIFIER_INTERFACE_VERSION_FIFO) &&
- (InterfaceId.Bits.CapFIFO != 0) &&
- (InterfaceCapability.Bits.InterfaceVersion == INTERFACE_CAPABILITY_INTERFACE_VERSION_PTP)) {
- return PtpInterfaceFifo;
+ PtpInterface = Tpm12GetPtpInterface ((VOID *) (UINTN) PcdGet64 (PcdTpmBaseAddress));
+ switch (PtpInterface) {
+ case PtpInterfaceFifo:
+ case PtpInterfaceTis:
+ return Tpm12TisTpmCommand (
+ (TIS_PC_REGISTERS_PTR) (UINTN) PcdGet64 (PcdTpmBaseAddress),
+ InputParameterBlock,
+ InputParameterBlockSize,
+ OutputParameterBlock,
+ OutputParameterBlockSize
+ );
+ case PtpInterfaceCrb:
+ //
+ // No need to support CRB because it is only accept TPM2 command.
+ //
+ default:
+ return EFI_DEVICE_ERROR;
}
- return PtpInterfaceTis;
+
}
/**
|