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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/secureboot/trusted/base/tpmLogMgr.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2015,2016 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
/**
* @file TpmLogMgr.C
*
* @brief TPM Event log manager
*/
/////////////////////////////////////////////////////////////////
// NOTE: This file is exportable as TSS-Lite for skiboot/PHYP //
/////////////////////////////////////////////////////////////////
// ----------------------------------------------
// Includes
// ----------------------------------------------
#include <string.h>
#include "tpmLogMgr.H"
#ifdef __HOSTBOOT_MODULE
#include <secureboot/trustedboot_reasoncodes.H>
#include "../trustedbootUtils.H"
#include "../trustedboot.H"
#else
#include "trustedboot_reasoncodes.H"
#include "trustedbootUtils.H"
#include "trustedboot.H"
#include "trustedTypes.H"
#endif
#ifdef __cplusplus
namespace TRUSTEDBOOT
{
#endif
uint32_t TCG_EfiSpecIdEventStruct_size(TCG_EfiSpecIdEventStruct* val)
{
return (sizeof(TCG_EfiSpecIdEventStruct) + val->vendorInfoSize);
}
errlHndl_t TpmLogMgr_initialize(TpmLogMgr* val)
{
errlHndl_t err = TB_SUCCESS;
const char vendorInfo[] = "IBM";
const char eventSignature[] = "Spec ID Event03";
TCG_EfiSpecIdEventStruct* eventData = NULL;
TCG_PCR_EVENT eventLogEntry;
TRACUCOMP( g_trac_trustedboot, ">>initialize()");
if (NULL == val)
{
TRACFCOMP( g_trac_trustedboot,
"TPM LOG INIT FAIL");
/*@
* @errortype
* @reasoncode RC_TPMLOGMGR_INIT_FAIL
* @severity ERRL_SEV_UNRECOVERABLE
* @moduleid MOD_TPMLOGMGR_INITIALIZE
* @userdata1 0
* @userdata2 0
* @devdesc TPM log buffer init failure.
*/
err = tpmCreateErrorLog( MOD_TPMLOGMGR_INITIALIZE,
RC_TPMLOGMGR_INIT_FAIL, 0, 0);
}
else
{
val->logSize = 0;
mutex_init( &val->logMutex );
mutex_lock( &val->logMutex );
// Assign our new event pointer to the start
val->newEventPtr = val->eventLog;
memset(val->eventLog, 0, TPMLOG_BUFFER_SIZE);
eventData = (TCG_EfiSpecIdEventStruct*) eventLogEntry.event;
// Add the header event log
// Values here come from the PC ClientSpecificPlatformProfile spec
eventLogEntry.eventType = EV_NO_ACTION;
eventLogEntry.pcrIndex = 0;
eventLogEntry.eventSize = sizeof(TCG_EfiSpecIdEventStruct) +
sizeof(vendorInfo);
memcpy(eventData->signature, eventSignature,
sizeof(eventSignature));
eventData->platformClass = htole32(TPM_PLATFORM_SERVER);
eventData->specVersionMinor = TPM_SPEC_MINOR;
eventData->specVersionMajor = TPM_SPEC_MAJOR;
eventData->specErrata = TPM_SPEC_ERRATA;
eventData->uintnSize = 1;
eventData->numberOfAlgorithms = htole32(HASH_COUNT);
eventData->digestSizes[0].algorithmId = htole16(TPM_ALG_SHA256);
eventData->digestSizes[0].digestSize = htole16(TPM_ALG_SHA256_SIZE);
eventData->vendorInfoSize = sizeof(vendorInfo);
memcpy(eventData->vendorInfo, vendorInfo, sizeof(vendorInfo));
val->newEventPtr = TCG_PCR_EVENT_logMarshal(&eventLogEntry,
val->newEventPtr);
// Done, move our pointers
val->logSize += TCG_PCR_EVENT_marshalSize(&eventLogEntry);
mutex_unlock( &val->logMutex );
// Debug display of raw data
TRACUBIN(g_trac_trustedboot, "tpmInitialize: Header Entry",
val->eventLog, val->logSize);
TRACUCOMP( g_trac_trustedboot,
"<<initialize() LS:%d - %s",
val->logSize,
((TB_SUCCESS == err) ? "No Error" : "With Error") );
}
return err;
}
errlHndl_t TpmLogMgr_addEvent(TpmLogMgr* val,
TCG_PCR_EVENT2* logEvent)
{
errlHndl_t err = TB_SUCCESS;
size_t newLogSize = TCG_PCR_EVENT2_marshalSize(logEvent);
TRACUCOMP( g_trac_trustedboot,
">>tpmAddEvent() PCR:%d Type:%d Size:%d",
logEvent->pcrIndex, logEvent->eventType, (int)newLogSize);
mutex_lock( &val->logMutex );
do
{
// Need to ensure we have room for the new event
// We have to leave room for the log full event as well
if (NULL == val->newEventPtr ||
val->logSize + newLogSize > TPMLOG_BUFFER_SIZE)
{
TRACFCOMP( g_trac_trustedboot,
"TPM LOG ADD FAIL PNULL(%d) LS(%d) New LS(%d)",
(NULL == val->newEventPtr ? 0 : 1),
(int)val->logSize, (int)newLogSize);
/*@
* @errortype
* @reasoncode RC_TPMLOGMGR_ADDEVENT_FAIL
* @severity ERRL_SEV_UNRECOVERABLE
* @moduleid MOD_TPMLOGMGR_ADDEVENT
* @userdata1 Log buffer NULL
* @userdata2[0:31] Current Log Size
* @userdata2[32:63] New entry size
* @devdesc TPM log buffer add failure.
*/
err = tpmCreateErrorLog( MOD_TPMLOGMGR_ADDEVENT,
RC_TPMLOGMGR_ADDEVENT_FAIL,
(NULL == val->newEventPtr ? 0 : 1),
(uint64_t)val->logSize << 32 |
newLogSize);
break;
}
val->newEventPtr = TCG_PCR_EVENT2_logMarshal(logEvent,
val->newEventPtr);
if (NULL == val->newEventPtr)
{
TRACFCOMP( g_trac_trustedboot,
"TPM LOG MARSHAL Fail");
/*@
* @errortype
* @reasoncode RC_TPMLOGMGR_ADDEVENTMARSH_FAIL
* @severity ERRL_SEV_UNRECOVERABLE
* @moduleid MOD_TPMLOGMGR_ADDEVENT
* @userdata1 0
* @userdata2 0
* @devdesc log buffer malloc failure.
*/
err = tpmCreateErrorLog( MOD_TPMLOGMGR_ADDEVENT,
RC_TPMLOGMGR_ADDEVENTMARSH_FAIL,
0,
0);
break;
}
val->logSize += newLogSize;
} while ( 0 );
TRACUCOMP( g_trac_trustedboot,
"<<tpmAddEvent() LS:%d - %s",
(int)val->logSize,
((TB_SUCCESS == err) ? "No Error" : "With Error") );
mutex_unlock( &val->logMutex );
return err;
}
uint32_t TpmLogMgr_getLogSize(TpmLogMgr* val)
{
return val->logSize;
}
void TpmLogMgr_dumpLog(TpmLogMgr* val)
{
// Debug display of raw data
TRACUCOMP(g_trac_trustedboot, "tpmDumpLog Size : %d\n",
(int)val->logSize);
TRACUBIN(g_trac_trustedboot, "tpmDumpLog",
val->eventLog, val->logSize);
}
#ifdef __cplusplus
} // end TRUSTEDBOOT
#endif
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