Firmware Generated Register File for Hardware Validation
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Solution Overview
Problem
The existing hardware system testing and validation processes are inefficient, requiring manual generation of script files with thousands of register commands, which is time-consuming and prone to human error, and do not allow for simultaneous testing of hardware and firmware without connecting to firmware drivers.
Innovation Solution
A firmware simulator is used to execute firmware on a simulated model, record register reads and writes, and convert these into a script file that can force a physical hardware system into a desired state, eliminating the need for manual script generation and enabling parallel testing of hardware and firmware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual generation of script files with thousands of register commands is used, then flexibility in testing is maintained, but the process becomes time-consuming and prone to human error
Solution Approach 1:
The patent uses a firmware simulator to copy and record the exact register read/write sequences automatically executed during firmware operation. This automated copying process generates script files that precisely replicate firmware behavior without manual intervention, eliminating human errors while maintaining complete testing flexibility.
Solution Approach 2:
The system performs self-service by automatically generating test scripts through the firmware simulator itself. The simulator records its own register operations during firmware execution and converts these into script files, making the system self-sufficient and eliminating the need for manual script creation.
2Reliability
If hardware and firmware are tested simultaneously with firmware drivers connected, then complete system validation is achieved, but testing complexity and resource requirements increase
Solution Approach 1:
The patent segments the testing process into independent phases: first testing firmware in isolation using the firmware simulator, then testing the complete hardware system. This segmentation allows complete validation to be achieved through staged testing rather than requiring all components to be connected simultaneously, reducing testing setup complexity.
Solution Approach 2:
The firmware simulator acts as an intermediary that enables firmware testing without requiring direct connection to firmware drivers or physical hardware. This intermediary tool provides a simplified testing environment that can be connected to hardware only when necessary, reducing overall system complexity.
3Productivity
If firmware is tested using a simulator with hardware model, then testing speed and cost are reduced, but the simulator must accurately model all hardware register behaviors
Solution Approach 1:
The patent extracts only the essential register read/write operations from the complete hardware system model. The firmware simulator focuses solely on recording and validating these critical register interactions during firmware execution, rather than modeling every hardware detail. This extraction approach maintains high testing speed while reducing simulator complexity to only what is necessary for firmware validation.
Data Source
AI summary
When testing or validating a hardware system, a script file representing a portion of the firmware may be used to test the system instead of using the firmware code itself. For example, the script file may be plurality of register commands that perform the same initialization sequence as the firmware. Before connecting the hardware system to firmware drivers, the script file may be used to debug the initialization sequence. Instead of generating this script file manually, a firmware testing tool may be used. While executing the firmware, the tool may record the different register access commands performed during the initialization process. The script file is then generated programmatically using these recorded commands without requiring input from the system designer. The generated script file may then be tested on the hardware system to determine whether the command sequence in the script file forces the hardware system into the desired state.