UEFI Driver C Library Integration via Wrapper
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Solution Overview
Problem
The Unified Extensible Firmware Interface (UEFI) environment lacks robust software infrastructure and flexibility for developing applications and drivers, particularly due to limitations in using standard C libraries and storage constraints, which restrict the deployment of dynamically linked libraries.
Innovation Solution
A method is introduced where existing standard C libraries are ported and deployed as UEFI drivers, utilizing a wrapper driver and worker application architecture to expose C library functions through UEFI protocol interfaces, allowing for static linking and efficient memory usage, enabling the reuse of existing C-based applications and libraries in the UEFI environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standard C libraries are deployed as dynamically linked libraries in UEFI environment, then software infrastructure robustness is improved, but storage space is exceeded due to deployment constraints
Solution Approach 1:
The patent merges the C library implementation directly into the UEFI driver binary image, eliminating the need for separate dynamically linked library files. This consolidation allows the entire C library functionality to be deployed within the existing driver storage allocation, resolving the contradiction between improving software infrastructure robustness and exceeding storage space constraints.
Solution Approach 2:
The UEFI driver is designed to serve multiple functions: it acts as both the driver itself and the container for the C library implementation. This multi-functionality allows the driver to provide both hardware interfacing capabilities and standard C library services without requiring additional storage space for separate library files.
2Quantity of substance
If C libraries are ported and deployed as UEFI drivers with static linking, then storage constraints are overcome, but development complexity increases due to infrastructure limitations
Solution Approach 1:
The patent segments the development process into distinct phases: the C library is ported and implemented separately as a worker application, then integrated into the UEFI driver through a well-defined protocol interface. This segmentation allows developers to work on the C library porting independently using standard tools, reducing the overall development complexity despite the static linking requirement.
Solution Approach 2:
The patent introduces a protocol interface as an intermediary layer between the UEFI driver and the C library worker application. This intermediary simplifies the integration process by providing standardized communication mechanisms, reducing the complexity of porting C libraries to the UEFI environment with static linking.
3Adaptability or versatility
If wrapper driver and worker application architecture is used to expose C library functions, then software infrastructure flexibility is improved, but device complexity increases
Solution Approach 1:
The wrapper driver is designed as a universal component that can interface with multiple different C library implementations through a standardized protocol. This multi-functionality provides software infrastructure flexibility while managing device complexity through reuse of the same wrapper architecture across different library ports.
Solution Approach 2:
The architecture segments the system into a wrapper driver layer and a worker application layer, allowing independent development and testing of each component. This segmentation improves flexibility by enabling different C library implementations to be swapped without modifying the wrapper driver, while managing complexity through clear separation of concerns.
Data Source
AI summary
An example apparatus may comprise a processor and a memory device including computer program code. The memory device and the computer program code, with the processor, may cause the apparatus to execute a client application, the client application to consume a first protocol, the protocol having been produced by a Unified Extensible Firmware Interface (UEFI) wrapper driver; invoke, with the client application, the UEFI wrapper driver to perform at least one operation of the protocol; load a binary image of a worker application with the wrapper driver to invoke the at least one operation. The worker application calls at least one function of a software library to perform the at least one operation.