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/* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* TPM Lightweight Command Library.
*
* A low-level library for interfacing to TPM hardware or an emulator.
*/
#ifndef TPM_LITE_TLCL_H_
#define TPM_LITE_TLCL_H_
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
/* Call this first.
*/
void TlclLibinit(void);
/* Sends a TPM_Startup(ST_CLEAR). Note that this is a no-op for the emulator,
* because it runs this command during initialization.
*/
void TlclStartup(void);
/* Run the self test. Note---this is synchronous. To run this in parallel
* with other firmware, use ContinueSelfTest.
*/
void TlclSelftestfull(void);
/* Defines a space with permission [perm]. [index] is the index for the space,
* [size] the usable data size. Errors are ignored.
*/
void TlclDefineSpace(uint32_t index, uint32_t perm, uint32_t size);
/* Writes [length] bytes of [data] to space at [index]. The TPM error code is
* returned (0 for success).
*/
uint32_t TlclWrite(uint32_t index, uint8_t *data, uint32_t length);
/* Reads [length] bytes from space at [index] into [data]. The TPM error code
* is returned (0 for success).
*/
uint32_t TlclRead(uint32_t index, uint8_t *data, uint32_t length);
/* Write-locks space at [index].
*/
void TlclWriteLock(uint32_t index);
/* Read-locks space at [index].
*/
void TlclReadLock(uint32_t index);
/* Asserts physical presence in software.
*/
void TlclAssertPhysicalPresence(void);
/* Sets the nvLocked bit.
*/
void TlclSetNvLocked(void);
/* Returns 1 if the TPM is owned, 0 otherwise.
*/
int TlclIsOwned(void);
/* Issues a ForceClear.
*/
void TlclForceClear(void);
/* Issues a PhysicalEnable.
*/
void TlclPhysicalEnable(void);
/* Issues a PhysicalSetDeactivated. Pass 0 to activate. Returns result code.
*/
int TlclPhysicalSetDeactivated(uint8_t flag);
/* Gets some permanent flags of interest. (Add more here as needed.)
*/
int TlclGetFlags(uint8_t* disable, uint8_t* deactivated);
#endif /* TPM_LITE_TLCL_H_ */
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