mirror of
https://github.com/Telecominfraproject/OpenCellular.git
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4abede35af
Changed TlclRead / TlclWrite to take void* / const void* to reduce typecasts. Much restructuring of rollback_index.c. Fixed a version-packing bug in rollback_index.c (& --> |) BUG:chrome-os-partner:304 TEST:manual testing of all code flows on CRB Review URL: http://codereview.chromium.org/3084030
138 lines
3.9 KiB
C
138 lines
3.9 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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/*****************************************************************************/
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/* Functions to be implemented by the stub library */
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/* Initialize the stub library */
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void TlclStubInit(void);
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/* Close and open the device. This is needed for running more complex commands
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* at user level, such as TPM_TakeOwnership, since the TPM device can be opened
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* only by one process at a time.
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*/
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void TlclCloseDevice(void);
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void TlclOpenDevice(void);
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/* Send data to the TPM and receive a response. Returns 0 if success,
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* nonzero if error. */
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uint32_t TlclStubSendReceive(uint8_t* request, int request_length,
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uint8_t* response, int max_length);
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/*****************************************************************************/
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/* Functions implemented in tlcl.c */
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/* Call this first.
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*/
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void 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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/* Run 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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/* 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, 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, 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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#endif /* TPM_LITE_TLCL_H_ */
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