Advanced Configuration and Power Interface Specification

Introduction
• Support the ACPI Event programming model including handling SCI interrupts, managing fixed
events, general-purpose events, embedded controller interrupts, and dynamic device support.
• Support acquisition and release of the Global Lock.
• Use the reset register to reset the system.
• Provide APIs to influence power management policy.
• Implement driver support for ACPI-defined devices.
• Implement APIs supporting the system indicators.
• Support all system states S1–S5.
1.7.3 OS Requirements
The following list describes the minimum requirements for an OSPM/ACPI-compatible OS:
• Use system address map reporting interfaces to get the system address map on Intel Architecture
(IA) platforms:
• INT 15H, E820H - Query System Address Map interface (see Section 15,“System Address
Map Interfaces”)
• EFI GetMemoryMap() Boot Services Function (see Section 15, “System Address Map
Interfaces”)
• Find and consume the ACPI System Description Tables (see Section 5, “ACPI Software
Programming Model”).
• Implementation of an AML interpreter supporting all defined AML grammar elements (see
Section 20, ACPI Machine Language Specification”).
• Support for the ACPI Event programming model including handling SCI interrupts, managing
fixed events, general-purpose events, embedded controller interrupts, and dynamic device
support.
• Enumerate and configure motherboard devices described in the ACPI Namespace.
• Implement support for the following ACPI devices defined within this specification:
• Embedded Controller Device (see Section 12, “ACPI Embedded Controller Interface
Specification”)
• GPE Block Device (see Section 9.10, “GPE Block Device”)
• Module Device (see Section 9.11, “Module Device”)
• Implementation of the ACPI thermal model (see Section 11, “Thermal Management”).
• Support acquisition and release of the Global Lock.
• OS-directed power management support (device drivers are responsible for maintaining device
context as described by the Device Power Management Class Specifications described in
Section A).
1.8 Target Audience
This specification is intended for the following users:
• OEMs building hardware containing ACPI-compatible interfaces
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