/** @addtogroup MCD_MCDIMPL_DAEMON_DEV | |
* @{ | |
* @file | |
* | |
* Class for TrustZone Devices. | |
* TrustZone device implements communication functions needed for | |
* accessing MobiCore located in an TrustZone environment. | |
* | |
* <!-- Copyright Giesecke & Devrient GmbH 2009 - 2012 --> | |
* | |
* Redistribution and use in source and binary forms, with or without | |
* modification, are permitted provided that the following conditions | |
* are met: | |
* 1. Redistributions of source code must retain the above copyright | |
* notice, this list of conditions and the following disclaimer. | |
* 2. Redistributions in binary form must reproduce the above copyright | |
* notice, this list of conditions and the following disclaimer in the | |
* documentation and/or other materials provided with the distribution. | |
* 3. The name of the author may not be used to endorse or promote | |
* products derived from this software without specific prior | |
* written permission. | |
* | |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS | |
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY | |
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE | |
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
*/ | |
#ifndef TRUSTZONEDEVICE_H_ | |
#define TRUSTZONEDEVICE_H_ | |
#include <stdint.h> | |
#include "McTypes.h" | |
#include "CSemaphore.h" | |
#include "CMcKMod.h" | |
#include "CWsm.h" | |
#include "ExcDevice.h" | |
#include "MobiCoreDevice.h" | |
#define SCHEDULING_FREQ 5 /**< N-SIQ every n-th time */ | |
class TrustZoneDevice : public MobiCoreDevice { | |
protected: | |
bool schedulerEnabled; /**< NQ IRQ Scheduler enabling */ | |
CSemaphore schedSync; /**< Semaphore to synchronize S-SIQs with scheduler thread */ | |
CMcKMod_ptr pMcKMod; /**< kernel module */ | |
CWsm_ptr pWsmMcp; /**< WSM use for MCP */ | |
CWsm_ptr mobicoreInDDR; /**< WSM used for Mobicore binary */ | |
bool mciReused; | |
/** Access functions to the MC Linux kernel module | |
*/ | |
bool yield( | |
void | |
); | |
bool nsiq( | |
void | |
); | |
bool waitSsiq( | |
void | |
); | |
public: | |
TrustZoneDevice( | |
void | |
); | |
virtual ~TrustZoneDevice( | |
void | |
); | |
// static MobiCoreDevice* getDeviceInstance( | |
// void | |
// ); | |
/** Set up MCI and wait till MC is initialized | |
* | |
* @param devFile the device node to speak to. | |
* @param loadMobiCore | |
* @param mobicoreImage | |
* @param enableScheduler | |
* | |
* @return true if mobicore is initialized | |
* @trows ExcDevice | |
*/ | |
bool initDevice( | |
const char *devFile, | |
bool loadMobiCore, | |
const char *mobicoreImage, | |
bool enableScheduler | |
); | |
void initDeviceStep2( | |
void | |
); | |
void notify( | |
uint32_t sessionId | |
); | |
void dumpMobicoreStatus( | |
void | |
); | |
uint32_t getMobicoreStatus( | |
void | |
); | |
bool checkMciVersion( | |
void | |
); | |
/** Memory allocation functions | |
*/ | |
// TODO xgal: move memory registration from TzDevice to Device class | |
bool getMciInstance( | |
uint32_t len, | |
CWsm_ptr *mci, | |
bool *reused | |
); | |
bool freeWsm( | |
CWsm_ptr pWsm | |
); | |
CWsm_ptr registerWsmL2( | |
addr_t buffer, | |
uint32_t len, | |
uint32_t pid | |
); | |
bool unregisterWsmL2( | |
CWsm_ptr pWsm | |
); | |
/** | |
* Allocates persistent WSM memory for TL (won't be fried when TLC exits). | |
*/ | |
CWsm_ptr allocateContiguousPersistentWsm( | |
uint32_t len | |
); | |
bool schedulerAvailable( | |
void | |
); | |
void schedule( | |
void | |
); | |
void handleIrq( | |
void | |
); | |
}; | |
#endif /* TRUSTZONEDEVICE_H_ */ | |
/** @} */ |