ACPI evolves the existing collection of power management BIOS code, Advanced Power Management (APM) application programming interfaces (APIs, PNPBIOS APIs, Multiprocessor Specification (MPS) tables and so on into a well-defined power management and configuration interface specification. ACPI provides the means for an orderly transition from existing (legacy) hardware to ACPI hardware, and it ...

2024年8月27日 · ACPI Component Architecture (ACPICA) is a reference implementation of the Advanced Configuration and Power Interface (ACPI) specification. This implementation simplifies complex ACPI operating system implementations by integrating it directly as a kernel-resident subsystem, without changes to the core ACPICA code.

Interface Spec: Intel Processor Vendor-Specific ACPI The Advanced Configuration and Power Interface (ACPI) specification describes a number of interfaces that are vendor specific. These include both the concept of the “Function Fixed Hardware” (FFH) interface, which was introduced in revision 2.0, as well as vendor-specific ACPI namespace object definitions. For specific interfaces, ACPI ...

2014年9月23日 · Runtime BIOS Fixes for ACPI Tables (July 2013) Describes methods for the BIOS to perform runtime modifications to ACPI tables before handoff to the operating system. Intel® Processor Vendor-Specific ACPI: Interface Specification (December 2014) Describes the Intel® processor driver capabilities bit definitions.

The Advanced Configuration and Power Interface (ACPI) specification describes a number of interfaces that are vendor specific. These include both the concept of the “Function Fixed Hardware” (FFH) interface, which was introduced in revision 2.0, as well as vendor-specific ACPI namespace object definitions.

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In addition, there may be individual policy managers for each USB Type-C connector on the platform. The individual policy managers are referred to as Local Policy Managers (LPM) in this specification. This specification does not define the method to use (PCIe*/ACPI/I2C/etc.) in order to interface with the PPM.

2020年12月17日 · Get an overview of features and support updates for this component architecture.

From ACPI HPET table, the OS initialization code extracts the base address assigned by the BIOS for each timer block implemented in the system. The OS initialization code can then directly query the timer hardware to discover detailed attributes and configurations supported by the timer hardware implementation.

The Fixed ACPI Description Table (FADT) section contains a raw data section header, as defined in the Intel® Platform Innovation Framework for EFI Firmware Volume Specification, followed by an FADT structure, which is defined in the ACPI 2.0 and ACPI 3.0 specifications.