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https://github.com/stefanberger/libtpms
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ccce8b5f49
Add TPM 2 code. This is rev. 142 code. Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
107 lines
5.5 KiB
C
107 lines
5.5 KiB
C
/********************************************************************************/
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/* */
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/* Platform specific entry and fail processing */
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/* Written by Ken Goldman */
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/* IBM Thomas J. Watson Research Center */
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/* $Id: RunCommand.c 953 2017-03-06 20:31:40Z kgoldman $ */
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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, 2016, 2017 */
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/* */
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/********************************************************************************/
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/* C.11 RunCommand.c */
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/* C.11.1. Introduction */
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/* This module provides the platform specific entry and fail processing. The _plat__RunCommand()
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function is used to call to ExecuteCommand() in the TPM code. This function does whatever
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processing is necessary to set up the platform in anticipation of the call to the TPM including
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settup for error processing. */
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/* The _plat__Fail() function is called when there is a failure in the TPM. The TPM code will have
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set the flag to indicate that the TPM is in failure mode. This call will then recursively call
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ExecuteCommand() in order to build the failure mode response. When ExecuteCommand() returns to
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_plat__Fail(), the platform will do some platform specif operation to return to the environment
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in which the TPM is executing. For a simulator, setjmp/longjmp is used. For an OS, a system exit
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to the OS would be appropriate. */
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/* C.11.2. Includes and locals */
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#include "PlatformData.h"
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#include "Platform_fp.h"
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#include <setjmp.h>
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#include "ExecCommand_fp.h"
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jmp_buf s_jumpBuffer;
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/* C.11.3. Functions */
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/* C.11.3.1. _plat__RunCommand() */
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/* This version of RunCommand() will set up a jum_buf and call ExecuteCommand(). If the command
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executes without failing, it will return and RunCommand() will return. If there is a failure in
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the command, then _plat__Fail() is called and it will longjump back to RunCommand() which will
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call ExecuteCommand() again. However, this time, the TPM will be in failure mode so
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ExecuteCommand() will simply build a failure response and return. */
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LIB_EXPORT void
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_plat__RunCommand(
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uint32_t requestSize, // IN: command buffer size
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unsigned char *request, // IN: command buffer
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uint32_t *responseSize, // IN/OUT: response buffer size
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unsigned char **response // IN/OUT: response buffer
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)
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{
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setjmp(s_jumpBuffer);
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ExecuteCommand(requestSize, request, responseSize, response);
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}
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/* C.11.3.2. _plat__Fail() */
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/* This is the platform depended failure exit for the TPM. */
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LIB_EXPORT NORETURN void
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_plat__Fail(
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void
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)
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{
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longjmp(&s_jumpBuffer[0], 1);
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}
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