Advanced Configuration and Power Interface Specification

ACPI Software Programming Model
FACP - Flag
FORCE_APIC_PHYSIC
AL_DESTINATION_MO
DE
1 19 A one indicates that all local xAPICs must be configured for
physical destination mode. If this bit is set, interrupt delivery
operation in logical destination mode is undefined. On
machines that contain fewer than 8 local xAPICs or that do
not use the xAPIC architecture, this bit is ignored.
HW_REDUCED_ACPI 1 20 A one indicates that the ACPI Hardware Interface (chapter 4)
is not implemented. Software-only alternatives are used for
supported fixed-features defined in chapter 4.
LOW_POWER_S0_IDL
E_CAPABLE
Bit
Length
Reserved 10 22
Bit
Offset
Description
1 21 A one informs OSPM that the platform is able to achieve
power savings in S0 similar to or better than those typically
achieved in S3. In effect, when this bit is set it indicates that
the system will achieve no power benefit by making a sleep
transition to S3.
5.2.9.1 Preferred PM Profile System Types
The following descriptions of preferred power management profile system types are to be used as a
guide for setting the Preferred_PM_Profile field in the FADT. OSPM can use this field to set default
power management policy parameters during OS installation.
Desktop
Mobile
A single user, full featured, stationary computing device that resides on or near an
individual’s work area. Most often contains one processor. Must be connected to AC
power to function. This device is used to perform work that is considered mainstream
corporate or home computing (for example, word processing, Internet browsing,
spreadsheets, and so on).
A single-user, full-featured, portable computing device that is capable of running on
batteries or other power storage devices to perform its normal functions. Most often
contains one processor. This device performs the same task set as a desktop. However
it may have limitations dues to its size, thermal requirements, and/or power source
life.
Workstation
A single-user, full-featured, stationary computing device that resides on or near an
individual’s work area. Often contains more than one processor. Must be connected to
AC power to function. This device is used to perform large quantities of computations
in support of such work as CAD/CAM and other graphics-intensive applications.
Enterprise Server
A multi-user, stationary computing device that frequently resides in a separate, often
specially designed, room. Will almost always contain more than one processor. Must
be connected to AC power to function. This device is used to support large-scale
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