Revision: 14791
http://sourceforge.net/p/edk2/code/14791
Author: jyao1
Date: 2013-10-21 05:56:07 +0000 (Mon, 21 Oct 2013)
Log Message:
-----------
Add TPM1.2 SaveState API.
Signed off by: Yao, Jiewen <[email protected]>
Reviewed by: Dong Guo <[email protected]>
Modified Paths:
--------------
trunk/edk2/SecurityPkg/Include/Library/Tpm12CommandLib.h
trunk/edk2/SecurityPkg/Library/Tpm12CommandLib/Tpm12Startup.c
Modified: trunk/edk2/SecurityPkg/Include/Library/Tpm12CommandLib.h
===================================================================
--- trunk/edk2/SecurityPkg/Include/Library/Tpm12CommandLib.h 2013-10-21
05:22:01 UTC (rev 14790)
+++ trunk/edk2/SecurityPkg/Include/Library/Tpm12CommandLib.h 2013-10-21
05:56:07 UTC (rev 14791)
@@ -32,6 +32,18 @@
);
/**
+ 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.
Modified: trunk/edk2/SecurityPkg/Library/Tpm12CommandLib/Tpm12Startup.c
===================================================================
--- trunk/edk2/SecurityPkg/Library/Tpm12CommandLib/Tpm12Startup.c
2013-10-21 05:22:01 UTC (rev 14790)
+++ trunk/edk2/SecurityPkg/Library/Tpm12CommandLib/Tpm12Startup.c
2013-10-21 05:56:07 UTC (rev 14791)
@@ -29,6 +29,14 @@
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 @@
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;
+ }
+}
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