diff options
| -rw-r--r-- | SecurityPkg/Include/Library/Tpm12CommandLib.h | 12 | ||||
| -rw-r--r-- | SecurityPkg/Library/Tpm12CommandLib/Tpm12Startup.c | 51 |
2 files changed, 62 insertions, 1 deletions
diff --git a/SecurityPkg/Include/Library/Tpm12CommandLib.h b/SecurityPkg/Include/Library/Tpm12CommandLib.h index 8b62823716..1dbc7d50c3 100644 --- a/SecurityPkg/Include/Library/Tpm12CommandLib.h +++ b/SecurityPkg/Include/Library/Tpm12CommandLib.h @@ -32,6 +32,18 @@ Tpm12Startup ( );
/**
+ Send SaveState command to TPM1.2.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_DEVICE_ERROR Unexpected device behavior.
+**/
+EFI_STATUS
+EFIAPI
+Tpm12SaveState (
+ VOID
+ );
+
+/**
Send ForceClear command to TPM1.2.
@retval EFI_SUCCESS Operation completed successfully.
diff --git a/SecurityPkg/Library/Tpm12CommandLib/Tpm12Startup.c b/SecurityPkg/Library/Tpm12CommandLib/Tpm12Startup.c index 684c9b523e..afbe02e382 100644 --- a/SecurityPkg/Library/Tpm12CommandLib/Tpm12Startup.c +++ b/SecurityPkg/Library/Tpm12CommandLib/Tpm12Startup.c @@ -29,6 +29,14 @@ typedef struct { TPM_RSP_COMMAND_HDR Hdr;
} TPM_RSP_START_UP;
+typedef struct {
+ TPM_RQU_COMMAND_HDR Hdr;
+} TPM_CMD_SAVE_STATE;
+
+typedef struct {
+ TPM_RSP_COMMAND_HDR Hdr;
+} TPM_RSP_SAVE_STATE;
+
#pragma pack()
/**
@@ -75,4 +83,45 @@ Tpm12Startup ( default:
return EFI_DEVICE_ERROR;
}
-}
\ No newline at end of file +}
+
+/**
+ Send SaveState command to TPM1.2.
+
+ @retval EFI_SUCCESS Operation completed successfully.
+ @retval EFI_DEVICE_ERROR Unexpected device behavior.
+**/
+EFI_STATUS
+EFIAPI
+Tpm12SaveState (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+ UINT32 TpmRecvSize;
+ UINT32 TpmSendSize;
+ TPM_CMD_SAVE_STATE SendBuffer;
+ TPM_RSP_SAVE_STATE RecvBuffer;
+ UINT32 ReturnCode;
+
+ //
+ // send Tpm command TPM_ORD_SaveState
+ //
+ TpmRecvSize = sizeof (TPM_RSP_SAVE_STATE);
+ TpmSendSize = sizeof (TPM_CMD_SAVE_STATE);
+ SendBuffer.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);
+ SendBuffer.Hdr.paramSize = SwapBytes32 (TpmSendSize);
+ SendBuffer.Hdr.ordinal = SwapBytes32 (TPM_ORD_SaveState);
+
+ Status = Tpm12SubmitCommand (TpmSendSize, (UINT8 *)&SendBuffer, &TpmRecvSize, (UINT8 *)&RecvBuffer);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ ReturnCode = SwapBytes32(RecvBuffer.Hdr.returnCode);
+ switch (ReturnCode) {
+ case TPM_SUCCESS:
+ return EFI_SUCCESS;
+ default:
+ return EFI_DEVICE_ERROR;
+ }
+}
|