| /** @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 */ |
| |
| /** 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 enableScheduler |
| ); |
| |
| void initDeviceStep2(void); |
| |
| void notify(uint32_t sessionId); |
| |
| void dumpMobicoreStatus(void); |
| |
| uint32_t getMobicoreStatus(void); |
| |
| bool checkMciVersion(void); |
| |
| /** Memory allocation functions */ |
| 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); |
| |
| bool lockWsmL2(uint32_t handle); |
| |
| bool unlockWsmL2(uint32_t handle); |
| |
| addr_t findWsmL2(uint32_t handle); |
| |
| bool findContiguousWsm(uint32_t handle, addr_t *phys, uint32_t *len); |
| |
| /** |
| * Cleanup all orphaned bulk buffers. |
| */ |
| bool cleanupWsmL2(void); |
| |
| /** |
| * Allocates persistent WSM memory for TL (won't be fried when TLC exits). |
| */ |
| CWsm_ptr allocateContiguousPersistentWsm(uint32_t len); |
| |
| bool setupLog(void); |
| |
| bool schedulerAvailable(void); |
| |
| void schedule(void); |
| |
| void handleIrq(void); |
| }; |
| |
| #endif /* TRUSTZONEDEVICE_H_ */ |
| |
| /** @} */ |