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| author | Zhang, Qi <qi1.zhang@intel.com> | 2020-07-28 16:20:39 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2020-07-28 09:56:25 +0000 |
| commit | 1b0d659e6dc987d27f63da94c9fe3f26ba171d15 (patch) | |
| tree | 5e38e76840da380fea19f019f7aeb08898834fc9 | |
| parent | ffde22468e2f0e93b51f97b801e6c7a181088c61 (diff) | |
| download | edk2-1b0d659e6dc987d27f63da94c9fe3f26ba171d15.tar.gz edk2-1b0d659e6dc987d27f63da94c9fe3f26ba171d15.tar.bz2 edk2-1b0d659e6dc987d27f63da94c9fe3f26ba171d15.zip | |
SecurityPkg/Tpm2CommandLib: add a new function
Tpm2GetCapabilityIsCommandImplemented
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2793
check if the commad is supported by comparing the command code with
command index.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Signed-off-by: Qi Zhang <qi1.zhang@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
| -rw-r--r-- | SecurityPkg/Include/Library/Tpm2CommandLib.h | 16 | ||||
| -rw-r--r-- | SecurityPkg/Library/Tpm2CommandLib/Tpm2Capability.c | 40 |
2 files changed, 56 insertions, 0 deletions
diff --git a/SecurityPkg/Include/Library/Tpm2CommandLib.h b/SecurityPkg/Include/Library/Tpm2CommandLib.h index ce381e786b..ee8eb62295 100644 --- a/SecurityPkg/Include/Library/Tpm2CommandLib.h +++ b/SecurityPkg/Include/Library/Tpm2CommandLib.h @@ -791,6 +791,22 @@ Tpm2GetCapabilityAlgorithmSet ( );
/**
+ This function will query if the command is supported.
+
+ @param[In] Command TPM_CC command starts from TPM_CC_FIRST.
+ @param[out] IsCmdImpl The command is supported or not.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_DEVICE_ERROR The command was unsuccessful.
+**/
+EFI_STATUS
+EFIAPI
+Tpm2GetCapabilityIsCommandImplemented (
+ IN TPM_CC Command,
+ OUT BOOLEAN *IsCmdImpl
+ );
+
+/**
This command is used to check to see if specific combinations of algorithm parameters are supported.
@param[in] Parameters Algorithm parameters to be validated
diff --git a/SecurityPkg/Library/Tpm2CommandLib/Tpm2Capability.c b/SecurityPkg/Library/Tpm2CommandLib/Tpm2Capability.c index 85b11c7715..17c0c3a151 100644 --- a/SecurityPkg/Library/Tpm2CommandLib/Tpm2Capability.c +++ b/SecurityPkg/Library/Tpm2CommandLib/Tpm2Capability.c @@ -39,6 +39,8 @@ typedef struct { #pragma pack()
+#define TPMA_CC_COMMANDINDEX_MASK 0x2000FFFF
+
/**
This command returns various information regarding the TPM and its current state.
@@ -629,6 +631,44 @@ Tpm2GetCapabilityAlgorithmSet ( }
/**
+ This function will query if the command is supported.
+
+ @param[In] Command TPM_CC command starts from TPM_CC_FIRST.
+ @param[out] IsCmdImpl The command is supported or not.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_DEVICE_ERROR The command was unsuccessful.
+**/
+EFI_STATUS
+EFIAPI
+Tpm2GetCapabilityIsCommandImplemented (
+ IN TPM_CC Command,
+ OUT BOOLEAN *IsCmdImpl
+ )
+{
+ TPMS_CAPABILITY_DATA TpmCap;
+ TPMI_YES_NO MoreData;
+ EFI_STATUS Status;
+ UINT32 Attribute;
+
+ Status = Tpm2GetCapability (
+ TPM_CAP_COMMANDS,
+ Command,
+ 1,
+ &MoreData,
+ &TpmCap
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ CopyMem (&Attribute, &TpmCap.data.command.commandAttributes[0], sizeof (UINT32));
+ *IsCmdImpl = (Command == (SwapBytes32(Attribute) & TPMA_CC_COMMANDINDEX_MASK));
+
+ return EFI_SUCCESS;
+}
+
+/**
This command is used to check to see if specific combinations of algorithm parameters are supported.
@param[in] Parameters Algorithm parameters to be validated
|