Download E-books Software and System Development using Virtual Platforms: Full-System Simulation with Wind River Simics PDF

By Daniel Aarno, Jakob Engblom

Virtual systems are discovering common use in either pre- and post-silicon software program and approach improvement. They decrease time to industry, enhance procedure caliber, make improvement extra effective, and allow really concurrent hardware/software layout and bring-up. digital systems bring up productiveness with unheard of inspection, configuration, and injection services. together with different forms of simulators, they supply full-system simulations the place computers should be established including the surroundings during which they function.

This publication isn't just approximately what simulation is and why it will be significant, it is going to additionally disguise the equipment of establishing and utilizing simulators for computer-based platforms. within you’ll discover a accomplished ebook approximately simulation top perform and layout styles, utilizing Simics as its base in addition to real-life examples to get the main from your Simics implementation. You’ll know about: Simics structure, model-driven improvement, digital platform modelling, networking, contiguous integration, debugging, opposite execution, simulator integration, workflow optimization, instrument automation, and lots more and plenty more.

  • Distills many years of expertise in utilizing and construction digital structures to aid readers discover the whole capability of digital platform simulation
  • Covers modeling similar use-cases together with units, platforms, extensions, and fault injection
  • Explains how simulations can effect software program improvement, debugging, procedure configuration, networking, and more
  • Discusses the right way to construct entire full-system simulation platforms from a mixture of simulators

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Checking out errors handlers is ready the toughest factor attainable, simply because forcing blunders on is especially tough. With a simulator like Simics, fault injection is way easier, taking into consideration trying out, debugging, and validation of blunders handlers. In business platforms, validating fault-handling code is a demand, and utilizing a simulator like Simics makes it a lot more straightforward to systematically inject specific states within the procedure without delay into the digital undefined. the choice approach to utilizing a debugger to regulate the objective method and overwrite values is far extra intrusive. REAL-WORLD tale: NASA GO-SIM The NASA IV&V self reliant attempt strength (ITC) group joined forces with NASA Goddard house Flight middle (GSFC) to advance a software-only simulator for the worldwide Precipitation size (GPM) Operational Simulator (GO-SIM) undertaking. The GPM project is a global community of satellites offering next-generation international observations of rain and snow. GO-SIM contains the GPM flooring procedure and database, flight software program executables, and spacecraft simulators. GO-SIM used to be designed as a high-fidelity simulator with out dependencies. Its services contain loading and operating unmodified flight software program binaries, executing flight scripts, appearing single-step debugging, injecting error through the floor procedure, stressing the method lower than trying out, and validating findings from different analyses. a part of GO-SIM is a Simics version of the RAD750† processor, which permits the objective software program to run at the digital platform an identical approach it does on actual undefined. in addition to Simics’ functions of scripting, debugging, inspection, and fault injection, it permits clients to outline, increase, and combine their structures with out the restrictions of actual goal undefined. Simics allowed NASA’s ITC workforce to simulate their goal undefined, starting from a unmarried processor to massive, complicated, and hooked up digital structures, and construct its GO-SIM product with the entire wanted good points. 15 16 bankruptcy 1 advent Code gen to focus on C/C++ code Loadable module collect and hyperlink version program software OS OS Simulated undefined actual undefined Simics Host OS Host undefined determine 1. five Simics and autogenerated code. MODEL-DRIVEN improvement Model-driven improvement (MDD) is broadly utilized within the area of keep an eye on platforms and is the traditional improvement method for car, aerospace, avionics, and security structures. A key a part of MDD is to generate code from the version, as illustrated in determine 1. five, instead of writing it manually. For Simics, no matter if code is generated or handwritten doesn't matter—it will run an identical on Simics. PROCESSOR-IN-THE-LOOP checking out In a regular model-driven workflow, a version is first established utilizing model-in-the-loop (MIL) trying out in the modeling instrument (e. g. , Simulink, Labview, MATLAB, or SCADE). In MIL checking out, the version of the code to be generated is established opposed to a version of the realm it interacts with. subsequent, simulation-in-the-loop (SIL) checking out is played, the place code is generated to run at the improvement host, checking out the code half opposed to the realm version.

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