TM Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, C-Ware, the Energy Efficient Solutions logo, mobileGT, PowerQUICC, QorIQ, StarCore and Symphony are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, ColdFire+, CoreNet, Flexis, Kinetis, MagniV, MXC, Platform in a Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc.. Updated Jan 2012

TM 2 Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, C-Ware, the Energy Efficient Solutions logo, mobileGT, PowerQUICC, QorIQ, StarCore and Symphony are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, ColdFire+, CoreNet, Flexis, Kinetis, MagniV, MXC, Platform in a Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. Virtual Platform – Challenges & Requirement Significance of TLM 2.0 TLM LT Methodology TLM LT Adapter Moving to Multi -Threading Challenges and Learning’s of Multi-Threading Challenges and Learning’s of DMI Performance result Conclusion References

TM 3 Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, C-Ware, the Energy Efficient Solutions logo, mobileGT, PowerQUICC, QorIQ, StarCore and Symphony are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, ColdFire+, CoreNet, Flexis, Kinetis, MagniV, MXC, Platform in a Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. SoCs are becoming more complex day by day − Today’s SoC contain multiple heterogeneous cores, hardware accelerators, peripherals, complex memory hierarchy with hardware supported coherency High-fidelity models developed by different divisions and teams in a large organization follow diverse modeling framework − Porting all the complex models to a common modeling framework is no easy task Timely availability of Virtual Platform is critical − Useful for Software driver development A common methodology and infrastructure is required − To enable interoperability of such diverse simulation models − To demonstrate quick virtual platform integration and co-simulation

4 TM Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, C-Ware, the Energy Efficient Solutions logo, mobileGT, PowerQUICC, QorIQ, StarCore and Symphony are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, ColdFire+, CoreNet, Flexis, Kinetis, MagniV, MXC, Platform in a Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc.

TM 5 Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, C-Ware, the Energy Efficient Solutions logo, mobileGT, PowerQUICC, QorIQ, StarCore and Symphony are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, ColdFire+, CoreNet, Flexis, Kinetis, MagniV, MXC, Platform in a Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. TLM 2.0 introduces interoperability layer − Generic payload class is suitable for carrying most common payload information − Core interfaces are suitable for various model-to-model communication scenarios TLM 2.0 enables seamless integration of diverse simulation models − Extensions can be used to carry any type of payload and phase information − Models from different modeling framework can suitably comply to TLM 2.0 APIs − Our virtual platform integration is a proof Here, we present our TLM LT methodology as a case study

6 TM Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, C-Ware, the Energy Efficient Solutions logo, mobileGT, PowerQUICC, QorIQ, StarCore and Symphony are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, ColdFire+, CoreNet, Flexis, Kinetis, MagniV, MXC, Platform in a Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. TLM definition TLM integration TLM Adapter Creation Identify reusable generic payload fields Identify new payload extensions Map C/C++ call to TLM Blocking API and vice versa Create subsystems comprising TLM Adapters Create SoC Top & connect TLM adapter subsystems together TLM Extension file TLM LT Adapters Specs C/C++ and SystemC Model Library

TM 7 Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, C-Ware, the Energy Efficient Solutions logo, mobileGT, PowerQUICC, QorIQ, StarCore and Symphony are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, ColdFire+, CoreNet, Flexis, Kinetis, MagniV, MXC, Platform in a Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. Based on blocking transport interface − Provides fast-functional model-to-model communication Has no dependency on SystemC scheduler Uses TLM multi-sockets to allow connectivity to multiple initiators/targets Zero delay model − Doesn’t buffer transaction at all − Immediately maps C/C++ API call to TLM API and vice versa

8 TM Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, C-Ware, the Energy Efficient Solutions logo, mobileGT, PowerQUICC, QorIQ, StarCore and Symphony are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, ColdFire+, CoreNet, Flexis, Kinetis, MagniV, MXC, Platform in a Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. TLM 2.0 DSP side C++ Components Power Arch side C++ Components Central Inter connect Module Central Inter connect Module TLM LT Power Adapter TLM LT Power Adapter MemAccess I/f tlm_generic_payload Snoop I/f TLM LT DSP Adapter TLM LT DSP Adapter tlm_generic_payload DSPCustom I/f b_transport Multi Init/Target Socket Pair On Each side Mem Access Mem Access Mem/ Reg Access Mem/ Reg Access Snoop Request- Respons es Snoop Request- Respons es DSP Module

TM 9 Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, C-Ware, the Energy Efficient Solutions logo, mobileGT, PowerQUICC, QorIQ, StarCore and Symphony are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, ColdFire+, CoreNet, Flexis, Kinetis, MagniV, MXC, Platform in a Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. bool snoop_enable − Helps to distinguish between cacheable and non-cacheable memory regions − Transactions with this attribute set are broadcasted to all masters with caches implemented to maintain coherency uint32_t decoration_attr − Used with special decoration instructions which can atomically set, clear, increment or decrement another region in memory along with read/write to the specified region − Set by the SC3900/e6500 cores on execution of a decoration instruction to indicate L3 cache to take required actions uint32_t addr_only_type − Helps to model specific address only transactions types, e.g.  TLBIE causes broadcast of a TLB invalidate entry operation to all snoopers

TM 10 Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, C-Ware, the Energy Efficient Solutions logo, mobileGT, PowerQUICC, QorIQ, StarCore and Symphony are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, ColdFire+, CoreNet, Flexis, Kinetis, MagniV, MXC, Platform in a Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. Full system virtual platforms is becoming very complex − Running a highly complex system in a single thread becomes a severe bottleneck to simulation performance Multi-Threading the simulator is the approach to speed up simulation − Helps effective utilization of the concurrent host system resources, which are heavily into Multi-Core and Multi-Thread Logical partitioning of sub-system models to run in separate threads helps achieve Multi-Threading − Most straight forward way to partition work among different threads − Minimal changes needed in single-threaded version of the code

11 TM Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, C-Ware, the Energy Efficient Solutions logo, mobileGT, PowerQUICC, QorIQ, StarCore and Symphony are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, ColdFire+, CoreNet, Flexis, Kinetis, MagniV, MXC, Platform in a Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc.

TM 12 Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, C-Ware, the Energy Efficient Solutions logo, mobileGT, PowerQUICC, QorIQ, StarCore and Symphony are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, ColdFire+, CoreNet, Flexis, Kinetis, MagniV, MXC, Platform in a Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. TLM Adapter with Multi-Initiator/Target socket became a severe bottleneck − All threads on DSP side contended for the shared resources in the TLM Adapter, even when they were accessing different resources on the Power Arch side We chose to instantiate multiple TLM Adapters – one per DSP thread − An adapter may still connect to multiple entities working on same thread − No contention due to TLM connectivity! All DSP side threads still contend for the shared memory − Need to protect memory and this again impacts simulation performance TLM 2.0 DMI helps minimize this impact − Most of the accesses are satisfied via DMI − Protection needed only when acquiring DMI pointers

TM 13 Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, C-Ware, the Energy Efficient Solutions logo, mobileGT, PowerQUICC, QorIQ, StarCore and Symphony are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, ColdFire+, CoreNet, Flexis, Kinetis, MagniV, MXC, Platform in a Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. DMI should be used cautiously! − Causes any bus snooping capabilities provided by the interconnect model to be bypassed − Certain device models have internal caches and these needs to be kept coherent with the main memory − If a master modifies certain memory region via DMI and if this region is present in one of the cache models, then there is no way keep the system coherent! We employed a mechanism to allow DMI while maintaining coherency − DMI acquire succeeds only if a memory region is not already cached − All requests to cached region go via interconnect model – no DMI, snoop broadcast if asked − Whenever a new region is cached, DMI invalidates is sent to all masters to prevent them from using DMI for such regions

14 TM Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, C-Ware, the Energy Efficient Solutions logo, mobileGT, PowerQUICC, QorIQ, StarCore and Symphony are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, ColdFire+, CoreNet, Flexis, Kinetis, MagniV, MXC, Platform in a Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. TLM 2.0 DSP side Power Arch side Inter-connect TLM PA Adapter TLM DSP Adapter DSP Partition 1 DSP Partition 2 DSP Partition 3 Power Partition 1 Power Partition 2 Thread-3 Thread-4 Thread-5 Thread-1 Thread-2

15 TM Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, C-Ware, the Energy Efficient Solutions logo, mobileGT, PowerQUICC, QorIQ, StarCore and Symphony are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, ColdFire+, CoreNet, Flexis, Kinetis, MagniV, MXC, Platform in a Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc.

TM 16 Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, C-Ware, the Energy Efficient Solutions logo, mobileGT, PowerQUICC, QorIQ, StarCore and Symphony are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, ColdFire+, CoreNet, Flexis, Kinetis, MagniV, MXC, Platform in a Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. TLM 2.0 based methodology is a good technique to integrate and co-simulate diverse LT simulation models − TLM Adapters can be designed and deployed in a smart way that ensures coherency Multi-threading is the way to go − Great speed-up for virtual platform simulation

TM 17 Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, C-Ware, the Energy Efficient Solutions logo, mobileGT, PowerQUICC, QorIQ, StarCore and Symphony are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, ColdFire+, CoreNet, Flexis, Kinetis, MagniV, MXC, Platform in a Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. SystemC IEEE Language Reference Manual

18 TM Freescale, the Freescale logo, AltiVec, C-5, CodeTEST, CodeWarrior, ColdFire, C-Ware, the Energy Efficient Solutions logo, mobileGT, PowerQUICC, QorIQ, StarCore and Symphony are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. Airfast, BeeKit, BeeStack, ColdFire+, CoreNet, Flexis, Kinetis, MagniV, MXC, Platform in a Package, Processor Expert, QorIQ Qonverge, Qorivva, QUICC Engine, Ready Play, SafeAssure, the SafeAssure logo, SMARTMOS, TurboLink, VortiQa and Xtrinsic are trademarks of Freescale Semiconductor, Inc. All other product or service names are the property of their respective owners. © 2012 Freescale Semiconductor, Inc. Thank You!

TM