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tpm2: Move CLOCK #defines into PlatformClock.h
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
This commit is contained in:
Stefan Berger
Stefan Berger
parent
2b8ce8d8c1
commit
bb84bfbf36
@ -411,6 +411,7 @@ noinst_HEADERS += \
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tpm2/PCR_SetAuthPolicy_fp.h \
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tpm2/PCR_SetAuthValue_fp.h \
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tpm2/Platform.h \
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tpm2/PlatformClock.h \
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tpm2/PlatformData.h \
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tpm2/Platform_fp.h \
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tpm2/PolicyAuthorize_fp.h \
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@ -68,6 +68,7 @@
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#include "TPMB.h"
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#include "MinMax.h"
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#include "TpmProfile.h"
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#include "PlatformClock.h"
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#include "PlatformData.h"
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#include "Platform_fp.h"
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#endif // _PLATFORM_H_
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89
src/tpm2/PlatformClock.h
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89
src/tpm2/PlatformClock.h
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@ -0,0 +1,89 @@
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/********************************************************************************/
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/* */
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/* Platform Clock . */
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/* Written by Ken Goldman */
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/* IBM Thomas J. Watson Research Center */
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/* $Id$ */
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/* */
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/* Licenses and Notices */
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/* */
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/* 1. Copyright Licenses: */
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/* */
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/* - Trusted Computing Group (TCG) grants to the user of the source code in */
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/* this specification (the "Source Code") a worldwide, irrevocable, */
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/* nonexclusive, royalty free, copyright license to reproduce, create */
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/* derivative works, distribute, display and perform the Source Code and */
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/* derivative works thereof, and to grant others the rights granted herein. */
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/* */
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/* - The TCG grants to the user of the other parts of the specification */
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/* (other than the Source Code) the rights to reproduce, distribute, */
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/* display, and perform the specification solely for the purpose of */
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/* developing products based on such documents. */
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/* */
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/* 2. Source Code Distribution Conditions: */
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/* */
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/* - Redistributions of Source Code must retain the above copyright licenses, */
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/* this list of conditions and the following disclaimers. */
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/* */
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/* - Redistributions in binary form must reproduce the above copyright */
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/* licenses, this list of conditions and the following disclaimers in the */
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/* documentation and/or other materials provided with the distribution. */
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/* */
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/* 3. Disclaimers: */
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/* */
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/* - THE COPYRIGHT LICENSES SET FORTH ABOVE DO NOT REPRESENT ANY FORM OF */
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/* LICENSE OR WAIVER, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, WITH */
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/* RESPECT TO PATENT RIGHTS HELD BY TCG MEMBERS (OR OTHER THIRD PARTIES) */
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/* THAT MAY BE NECESSARY TO IMPLEMENT THIS SPECIFICATION OR OTHERWISE. */
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/* Contact TCG Administration (admin@trustedcomputinggroup.org) for */
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/* information on specification licensing rights available through TCG */
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/* membership agreements. */
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/* */
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/* - THIS SPECIFICATION IS PROVIDED "AS IS" WITH NO EXPRESS OR IMPLIED */
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/* WARRANTIES WHATSOEVER, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR */
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/* FITNESS FOR A PARTICULAR PURPOSE, ACCURACY, COMPLETENESS, OR */
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/* NONINFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS, OR ANY WARRANTY */
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/* OTHERWISE ARISING OUT OF ANY PROPOSAL, SPECIFICATION OR SAMPLE. */
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/* */
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/* - Without limitation, TCG and its members and licensors disclaim all */
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/* liability, including liability for infringement of any proprietary */
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/* rights, relating to use of information in this specification and to the */
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/* implementation of this specification, and TCG disclaims all liability for */
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/* cost of procurement of substitute goods or services, lost profits, loss */
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/* of use, loss of data or any incidental, consequential, direct, indirect, */
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/* or special damages, whether under contract, tort, warranty or otherwise, */
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/* arising in any way out of use or reliance upon this specification or any */
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/* information herein. */
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/* */
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/* (c) Copyright IBM Corp. and others, 2019 */
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/* */
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/********************************************************************************/
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// C.16 PlatformClock.h This file contains the instance data for the Platform module. It is
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// collected in this file so that the state of the module is easier to manage.
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#ifndef _PLATFORM_CLOCK_H_
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#define _PLATFORM_CLOCK_H_
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#ifdef _MSC_VER
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#include <sys/types.h>
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#include <sys/timeb.h>
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#else
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#include <sys/time.h>
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#include <time.h>
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#endif
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// CLOCK_NOMINAL is the number of hardware ticks per mS. A value of 300000 means that the nominal
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// clock rate used to drive the hardware clock is 30 MHz. The adjustment rates are used to determine
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// the conversion of the hardware ticks to internal hardware clock value. In practice, we would
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// expect that there woudl be a hardware register will accumulated mS. It would be incremented by
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// the output of a pre-scaler. The pre-scaler would divide the ticks from the clock by some value
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// that would compensate for the difference between clock time and real time. The code in Clock does
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// the emulation of this function.
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#define CLOCK_NOMINAL 30000
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// A 1% change in rate is 300 counts
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#define CLOCK_ADJUST_COARSE 300
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// A 0.1% change in rate is 30 counts
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#define CLOCK_ADJUST_MEDIUM 30
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// A minimum change in rate is 1 count
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#define CLOCK_ADJUST_FINE 1
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// The clock tolerance is +/-15% (4500 counts) Allow some guard band (16.7%)
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#define CLOCK_ADJUST_LIMIT 5000
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#endif // _PLATFORM_CLOCK_H_
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@ -96,22 +96,6 @@ EXTERN uint64_t s_suspendedElapsedTime;
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EXTERN BOOL s_timerReset;
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/* This value indicates that the timer was stopped. It causes a clock discontinuity. */
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EXTERN BOOL s_timerStopped;
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/* CLOCK_NOMINAL is the number of hardware ticks per mS. A value of 300000 means that the nominal
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clock rate used to drive the hardware clock is 30 MHz. The adjustment rates are used to
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determine the conversion of the hardware ticks to internal hardware clock value. In practice, we
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would expect that there would be a hardware register will accumulated mS. It would be incremented
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by the output of a pre-scaler. The pre-scaler would divide the ticks from the clock by some value
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that would compensate for the difference between clock time and real time. The code in Clock does
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the emulation of this function.*/
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#define CLOCK_NOMINAL 30000
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/* A 1% change in rate is 300 counts */
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#define CLOCK_ADJUST_COARSE 300
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/* A 0.1% change in rate is 30 counts */
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#define CLOCK_ADJUST_MEDIUM 30
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/* A minimum change in rate is 1 count */
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#define CLOCK_ADJUST_FINE 1
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/* The clock tolerance is +/-15% (4500 counts) Allow some guard band (16.7%) */
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#define CLOCK_ADJUST_LIMIT 5000
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/* This variable records the time when _plat__TimerReset() is called. This mechanism allow us to
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subtract the time when TPM is power off from the total time reported by clock() function */
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EXTERN uint64_t s_initClock;
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@ -3,7 +3,7 @@
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/* Functions relating to the TPM's time functions */
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/* Written by Ken Goldman */
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/* IBM Thomas J. Watson Research Center */
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/* $Id: Time.c 1490 2019-07-26 21:13:22Z kgoldman $ */
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/* $Id: Time.c 1519 2019-11-15 20:43:51Z kgoldman $ */
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/* */
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/* Licenses and Notices */
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/* */
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@ -64,7 +64,7 @@
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the implementation-specific time functions. */
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/* 8.10.2 Includes */
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#include "Tpm.h"
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#include "PlatformData.h"
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#include "PlatformClock.h"
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/* 8.10.3 Functions */
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/* 8.10.3.1 TimePowerOn() */
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/* This function initialize time info at _TPM_Init(). */
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