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54992f9d33
Change-Id: If7b6ef3cba733b74ba13db0871e6ac554d0d84ef BUG=chromium-os:433 TEST=none Review URL: http://codereview.chromium.org/6696043
150 lines
4.2 KiB
C
150 lines
4.2 KiB
C
/* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* TPM Lightweight Command Library.
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*
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* A low-level library for interfacing to TPM hardware or an emulator.
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*/
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#ifndef TPM_LITE_TLCL_H_
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#define TPM_LITE_TLCL_H_
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#include "sysincludes.h"
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#include "tss_constants.h"
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#include "tlcl_stub.h"
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/*****************************************************************************/
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/* Functions implemented in tlcl.c */
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/* Call this first. Returns 0 if success, nonzero if error.
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*/
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uint32_t TlclLibInit(void);
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/* Logs to stdout. Arguments like printf.
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*/
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void TlclLog(char* format, ...);
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/* Sets the log level. 0 is quietest.
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*/
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void TlclSetLogLevel(int level);
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/* Sends a TPM_Startup(ST_CLEAR). The TPM error code is returned (0
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* for success).
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*/
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uint32_t TlclStartup(void);
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/* Save the TPM state. Normally done by the kernel before a suspend, included
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* here for tests. The TPM error code is returned (0 for success).
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*/
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uint32_t TlclSaveState(void);
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/* Resumes by sending a TPM_Startup(ST_STATE). The TPM error code is returned
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* (0 for success).
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*/
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uint32_t TlclResume(void);
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/* Runs the self test. Note---this is synchronous. To run this in parallel
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* with other firmware, use ContinueSelfTest. The TPM error code is returned.
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*/
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uint32_t TlclSelfTestFull(void);
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/* Runs the self test in the background.
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*/
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uint32_t TlclContinueSelfTest(void);
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/* Defines a space with permission [perm]. [index] is the index for the space,
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* [size] the usable data size. The TPM error code is returned.
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*/
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uint32_t TlclDefineSpace(uint32_t index, uint32_t perm, uint32_t size);
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/* Writes [length] bytes of [data] to space at [index]. The TPM error code is
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* returned.
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*/
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uint32_t TlclWrite(uint32_t index, const void* data, uint32_t length);
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/* Reads [length] bytes from space at [index] into [data]. The TPM error code
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* is returned.
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*/
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uint32_t TlclRead(uint32_t index, void* data, uint32_t length);
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/* Write-locks space at [index]. The TPM error code is returned.
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*/
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uint32_t TlclWriteLock(uint32_t index);
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/* Read-locks space at [index]. The TPM error code is returned.
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*/
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uint32_t TlclReadLock(uint32_t index);
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/* Asserts physical presence in software. The TPM error code is returned.
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*/
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uint32_t TlclAssertPhysicalPresence(void);
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/* Enables the physical presence command. The TPM error code is returned.
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*/
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uint32_t TlclPhysicalPresenceCMDEnable(void);
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/* Finalizes the physical presence settings: sofware PP is enabled, hardware PP
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* is disabled, and the lifetime lock is set. The TPM error code is returned.
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*/
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uint32_t TlclFinalizePhysicalPresence(void);
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/* Turns off physical presence and locks it off until next reboot. The TPM
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* error code is returned.
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*/
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uint32_t TlclLockPhysicalPresence(void);
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/* Sets the nvLocked bit. The TPM error code is returned.
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*/
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uint32_t TlclSetNvLocked(void);
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/* Returns 1 if the TPM is owned, 0 otherwise.
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*/
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int TlclIsOwned(void);
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/* Issues a ForceClear. The TPM error code is returned.
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*/
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uint32_t TlclForceClear(void);
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/* Issues a PhysicalEnable. The TPM error code is returned.
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*/
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uint32_t TlclSetEnable(void);
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/* Issues a PhysicalDisable. The TPM error code is returned.
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*/
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uint32_t TlclClearEnable(void);
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/* Issues a SetDeactivated. Pass 0 to activate. Returns result code.
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*/
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uint32_t TlclSetDeactivated(uint8_t flag);
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/* Gets flags of interest. Pointers for flags you aren't interested in may
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* be NULL. The TPM error code is returned.
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*/
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uint32_t TlclGetFlags(uint8_t* disable, uint8_t* deactivated,
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uint8_t* nvlocked);
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/* Sets the bGlobalLock flag, which only a reboot can clear. The TPM error
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* code is returned.
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*/
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uint32_t TlclSetGlobalLock(void);
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/* Performs a TPM_Extend.
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*/
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uint32_t TlclExtend(int pcr_num, const uint8_t* in_digest, uint8_t* out_digest);
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/* Gets the permission bits for the NVRAM space with |index|.
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*/
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uint32_t TlclGetPermissions(uint32_t index, uint32_t* permissions);
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/* Gets the entire set of permanent flags.
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*/
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uint32_t TlclGetPermanentFlags(TPM_PERMANENT_FLAGS* pflags);
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/* Gets the entire set of volatile (ST_CLEAR) flags.
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*/
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uint32_t TlclGetSTClearFlags(TPM_STCLEAR_FLAGS* pflags);
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#endif /* TPM_LITE_TLCL_H_ */
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