Method for simulating the system performance of an on chip system
A method for simulating the system performance of an on-chip system is disclosed. The on-chip system includes a hardware architecture, which includes a processor core, a bus, memory and peripheral units, and a software architecture, which includes device drivers, a piece of firmware, an operating system and application software, in which a hardware model and a software performance model are created and the system performance is simulated on the hardware model using the software performance model.
1 . A method for simulating system performance of an on-chip system that comprises a hardware architecture that includes a processor core, a bus, memory and peripheral units, and a software architecture that includes device drivers, a piece of firmware, an operating system and application software, the method comprising:
creating a software performance model prior to implementation of software corresponding to the software architecture into the on-chip system as a first estimated software architecture in an executable software architecture specification that represents the software architecture in the form of system commands and system states; and
creating a hardware model of a first estimated hardware architecture as an executable hardware architecture specification; and
executing the software architecture specification on an arithmetic and logic unit by accessing the hardware architecture specification.
2 . The method as claimed in claim 1 , wherein the software architecture specification comprises elements in a language which can be read by humans.
3 . The method as claimed in claim 1 , wherein the software architecture specification contains the estimated software architecture in the form of data for the utilization levels of the processors, for the utilization level of peripheral units and/or for the utilization level as a result of internal process cycles.
4 . The method as claimed in claim 4 , wherein the software architecture specification contains the estimated software architecture in the form of data for the utilization levels of the processors.
5 . The method as claimed in claim 4 , wherein the software architecture specification contains the estimated software architecture in the form of data for the utilization level of peripheral units.
6 . The method as claimed in claim 4 , wherein the software architecture specification contains the estimated software architecture in the form of data for the utilization level as a result of internal process cycles.
7 . The method as claimed in claim 1 , wherein the software architecture specification contains at least one application profile definition which for its part contains a definition of the memory areas and a multiplicity of software tasks.
8 . The method as claimed in claim 7 , wherein the application profile definition contains definitions for controlling the real-time operation in the form of time-control and priority definitions.
9 . The method as claimed in claim 8 , wherein each task has the same task structure, which comprises a basic data part, an activation instruction part and a performance instruction part.
10 . The method as claimed in claim 7 , wherein each task has the same task structure, which comprises a basic data part, an activation instruction part and a performance instruction part.
11 . The method as claimed in claim 1 , wherein the simulation is used to ascertain performance parameters for the estimated on-chip system, and wherein the performance parameters are altered by repeating the simulation with a software architecture specification for a second estimated software architecture and with a hardware architecture specification for a second estimated hardware architecture.
12 . The method as claimed in claim 1 , wherein the on-chip system comprises a digital signal processor.