Dynamic ACPI Table Generation for Runtime Hardware Detection
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Solution Overview
Problem
Traditional ACPI-compatible systems rely on static AML generation, which is restrictive and cannot dynamically generate AML code for unexpected hardware devices added during runtime, limiting system flexibility and requiring system shutdown for hardware upgrades.
Innovation Solution
An ACPI-compatible system that autonomously constructs ACPI table entries and generates AML code using device-specific descriptors, allowing dynamic addition of new hardware devices without shutting down the system, by utilizing an ACPI agent to create necessary table entries and code on the fly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If static AML generation is used, then system stability is maintained, but system flexibility and adaptability deteriorate
Solution Approach 1:
The patent transitions from static AML generation to dynamic AML generation. The AML code is now generated at runtime based on actual hardware device additions, allowing the system to adapt flexibly to changing hardware configurations without requiring system shutdown or restart.
Solution Approach 2:
The system implements self-service through the ACPI agent that automatically detects new hardware devices and generates the necessary AML code and ACPI table entries autonomously. This eliminates the need for manual intervention or system administrator intervention when adding hardware devices.
2Adaptability or versatility
If hardware devices are added during runtime, then system adaptability improves, but system reliability deteriorates
Solution Approach 1:
The ACPI agent acts as an intermediary between the operating system and hardware devices. It monitors for new hardware additions, generates the appropriate AML code and ACPI table entries, and integrates them into the existing system without disrupting overall system stability or requiring shutdown.
Solution Approach 2:
The system performs preliminary actions by pre-defining the framework for AML generation and ACPI table construction. When hardware is added, the predetermined mechanisms are activated to automatically generate and integrate the necessary code structures, maintaining system reliability through proven methodologies.
3Ease of operation
If static ACPI tables are used, then manufacturing simplicity is maintained, but operational flexibility deteriorates
Solution Approach 1:
The ACPI tables transition from static to dynamic structures. New hardware devices automatically generate corresponding ACPI table entries at runtime, allowing the system to accommodate hardware additions without manual table management while maintaining ease of operation.
4Productivity
If system shutdown is required for hardware upgrades, then system reliability is maintained, but productivity deteriorates
Solution Approach 1:
The system maintains continuous operation during hardware upgrades. The ACPI agent enables hot-plugging of hardware devices, allowing the system to remain productive and operational while integrating new hardware without shutdown or restart interruptions.
Data Source
AI summary
An ACPI-compatible system is provided that comprises a database for storing a device-specific descriptor for a hardware device. The system further comprises an ACPI agent operable to autonomously construct an ACPI table entry for the hardware device using the device-specific descriptor. Also, a method for an ACPI-compatible system autonomously constructing an ACPI table entry for a hardware device is provided. The method comprises receiving from firmware associated with the hardware device, a device-specific descriptor for such hardware device, and an ACPI agent executing on the ACPI-compatible system using the device-specific descriptor to autonomously construct an ACPI table entry for the hardware device.