Secure Coprocessor Firmware Enablement for Pay-Per-Feature SoCs
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Solution Overview
Problem
Existing SoC manufacturing methods require customers to pay for all system firmware features upfront, regardless of usage, leading to inefficiencies and increased costs due to the inability to predict end-user needs, and result in the need for multiple SKU numbers for different applications.
Innovation Solution
Implementing a secure coprocessor in the SoC to enforce and authenticate selective enablement of system firmware feature sets (SFFS), allowing pay-for-use and pay-for-feature approaches, with flexible pricing strategies and reduced SKU numbers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If all system firmware features are made available to customers purchasing SoC, then customers can access complete functionality, but customers pay for features they will not use leading to increased costs
Solution Approach 1:
The patent implements dynamic feature enablement where firmware features are not statically assigned but can be selectively enabled or disabled at runtime based on customer needs. The system allows customers to purchase and activate only the specific firmware features they require, transforming the static feature set into a dynamic, on-demand configuration that adapts to different usage scenarios.
Solution Approach 2:
The patent changes the parameter of feature availability from a fixed state (all features always available) to a variable state (features available based on purchase and activation). The system uses licensing mechanisms and configuration parameters to control which firmware features are active, allowing customers to modify their feature set by purchasing additional licenses or disabling unused features.
2Adaptability or versatility
If differentiated SoC devices with different firmware features are created for different customers, then customization is improved, but manufacturing complexity and SKU management costs increase
Solution Approach 1:
The patent makes a single SoC device universal by enabling it to serve multiple customer needs through software-based feature differentiation. Instead of creating separate hardware variants for different feature sets, the system allows one SoC design to support multiple firmware configurations, making the device multi-functional and adaptable to various applications without increasing manufacturing complexity.
Solution Approach 2:
The patent uses software copying and licensing mechanisms to distribute different firmware feature sets across identical hardware platforms. Rather than manufacturing different physical devices, the system copies and activates different firmware configurations on the same hardware, reducing the need for multiple SKUs while maintaining feature differentiation.
3Reliability
If secure coprocessor enforced feature enablement is implemented, then feature selection security is improved, but system complexity increases
Solution Approach 1:
The patent introduces a secure coprocessor as an intermediary component that mediates between the firmware feature enablement requests and the system resources. This separate security module handles authentication, licensing verification, and feature activation without requiring the main processor to directly manage security functions, thereby improving security while isolating the complexity in a dedicated component.
Solution Approach 2:
The patent segments the system into distinct functional modules: the secure coprocessor for security operations, the main processor for application execution, and separate firmware feature sets. This segmentation allows the security-critical feature enablement logic to be isolated in the coprocessor, improving both security and maintainability by dividing the system into specialized components with defined responsibilities.
Data Source
AI summary
A method includes performing a validation process on a firmware feature description file indicating a set of firmware features in an integrated circuit package, and communicating a result of the validation process to firmware feature enablement logic residing in the integrated circuit package.