83b9662fb0
Add the following APIs that are required by TcgPei and/or TcgDxe to the Tpm12CommandLib instance: Tpm12Extend() Tpm12PhysicalPresence() Tpm12ContinueSelfTest() Tpm12GetCapabilityFlagPermanent() Tpm12GetCapabilityFlagVolatile() Cc: Chao Zhang <chao.b.zhang@intel.com> Cc: Jiewen Yao <jiewen.yao@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Michael Kinney <michael.d.kinney@intel.com> Reviewed-by: Chao Zhang <chao.b.zhang@intel.com> Reviewed-by: Jiewen Yao <jiewen.yao@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19727 6f19259b-4bc3-4df7-8a09-765794883524
128 lines
4.2 KiB
C
128 lines
4.2 KiB
C
/** @file
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Implement TPM1.2 Get Capabilities related commands.
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Copyright (c) 2016, Intel Corporation. All rights reserved. <BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <PiPei.h>
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#include <Library/Tpm12CommandLib.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/Tpm12DeviceLib.h>
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#pragma pack(1)
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typedef struct {
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TPM_RQU_COMMAND_HDR Hdr;
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UINT32 Capability;
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UINT32 CapabilityFlagSize;
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UINT32 CapabilityFlag;
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} TPM_CMD_GET_CAPABILITY;
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typedef struct {
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TPM_RSP_COMMAND_HDR Hdr;
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UINT32 ResponseSize;
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TPM_PERMANENT_FLAGS Flags;
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} TPM_RSP_GET_CAPABILITY_PERMANENT_FLAGS;
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typedef struct {
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TPM_RSP_COMMAND_HDR Hdr;
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UINT32 ResponseSize;
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TPM_STCLEAR_FLAGS Flags;
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} TPM_RSP_GET_CAPABILITY_STCLEAR_FLAGS;
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#pragma pack()
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/**
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Get TPM capability permanent flags.
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@param[out] TpmPermanentFlags Pointer to the buffer for returned flag structure.
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@retval EFI_SUCCESS Operation completed successfully.
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@retval EFI_TIMEOUT The register can't run into the expected status in time.
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@retval EFI_BUFFER_TOO_SMALL Response data buffer is too small.
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@retval EFI_DEVICE_ERROR Unexpected device behavior.
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**/
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EFI_STATUS
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EFIAPI
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Tpm12GetCapabilityFlagPermanent (
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OUT TPM_PERMANENT_FLAGS *TpmPermanentFlags
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)
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{
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EFI_STATUS Status;
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TPM_CMD_GET_CAPABILITY Command;
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TPM_RSP_GET_CAPABILITY_PERMANENT_FLAGS Response;
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UINT32 Length;
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//
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// send Tpm command TPM_ORD_GetCapability
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//
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Command.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);
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Command.Hdr.paramSize = SwapBytes32 (sizeof (Command));
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Command.Hdr.ordinal = SwapBytes32 (TPM_ORD_GetCapability);
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Command.Capability = SwapBytes32 (TPM_CAP_FLAG);
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Command.CapabilityFlagSize = SwapBytes32 (sizeof (TPM_CAP_FLAG_PERMANENT));
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Command.CapabilityFlag = SwapBytes32 (TPM_CAP_FLAG_PERMANENT);
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Length = sizeof (Response);
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Status = Tpm12SubmitCommand (sizeof (Command), (UINT8 *)&Command, &Length, (UINT8 *)&Response);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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ZeroMem (TpmPermanentFlags, sizeof (*TpmPermanentFlags));
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CopyMem (TpmPermanentFlags, &Response.Flags, MIN (sizeof (*TpmPermanentFlags), Response.ResponseSize));
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return Status;
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}
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/**
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Get TPM capability volatile flags.
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@param[out] VolatileFlags Pointer to the buffer for returned flag structure.
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@retval EFI_SUCCESS Operation completed successfully.
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@retval EFI_DEVICE_ERROR The command was unsuccessful.
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**/
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EFI_STATUS
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EFIAPI
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Tpm12GetCapabilityFlagVolatile (
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OUT TPM_STCLEAR_FLAGS *VolatileFlags
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)
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{
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EFI_STATUS Status;
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TPM_CMD_GET_CAPABILITY Command;
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TPM_RSP_GET_CAPABILITY_STCLEAR_FLAGS Response;
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UINT32 Length;
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//
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// send Tpm command TPM_ORD_GetCapability
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//
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Command.Hdr.tag = SwapBytes16 (TPM_TAG_RQU_COMMAND);
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Command.Hdr.paramSize = SwapBytes32 (sizeof (Command));
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Command.Hdr.ordinal = SwapBytes32 (TPM_ORD_GetCapability);
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Command.Capability = SwapBytes32 (TPM_CAP_FLAG);
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Command.CapabilityFlagSize = SwapBytes32 (sizeof (TPM_CAP_FLAG_VOLATILE));
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Command.CapabilityFlag = SwapBytes32 (TPM_CAP_FLAG_VOLATILE);
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Length = sizeof (Response);
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Status = Tpm12SubmitCommand (sizeof (Command), (UINT8 *)&Command, &Length, (UINT8 *)&Response);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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ZeroMem (VolatileFlags, sizeof (*VolatileFlags));
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CopyMem (VolatileFlags, &Response.Flags, MIN (sizeof (*VolatileFlags), Response.ResponseSize));
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return Status;
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}
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