Advanced Configuration and Power Interface Specification

Advanced Configuration and Power Interface Specification
Field
OEM Table ID 8 16 For the SBST, the table ID is the manufacturer model ID.
OEM Revision 4 24 OEM revision of SBST for supplied OEM Table ID.
Creator ID 4 28 Vendor ID of utility that created the table. For tables containing
Definition Blocks, this is the ID for the ASL Compiler.
Creator Revision 4 32 Revision of utility that created the table. For tables containing
Definition Blocks, this is the revision for the ASL Compiler.
Warning Energy
Level
4 36 OEM suggested energy level in milliWatt-hours (mWh) at which
OSPM warns the user.
Low Energy Level 4 40 OEM suggested platform energy level in mWh at which OSPM will
transition the system to a sleeping state.
Critical Energy
Level
Byte
Length
Byte
Offset
Description
4 44 OEM suggested platform energy level in mWh at which OSPM
performs an emergency shutdown.
5.2.15 Embedded Controller Boot Resources Table (ECDT)
This optional table provides the processor-relative, translated resources of an Embedded Controller.
The presence of this table allows OSPM to provide Embedded Controller operation region space
access before the namespace has been evaluated. If this table is not provided, the Embedded
Controller region space will not be available until the Embedded Controller device in the AML
namespace has been discovered and enumerated. The availability of the region space can be detected
by providing a _REG method object underneath the Embedded Controller device.
Table 5-69 Embedded Controller Boot Resources Table Format
Field
Byte
Length
Byte
Offset
Description
Header
Signature 4 0 ‘ECDT’ Signature for the Embedded Controller Table.
Length 4 4 Length, in bytes, of the entire Embedded Controller Table
Revision 1 8 1
Checksum 1 9 Entire table must sum to zero.
OEMID 6 10 OEM ID
OEM Table ID 8 16 For the Embedded Controller Table, the table ID is the
manufacturer model ID.
OEM Revision 4 24 OEM revision of Embedded Controller Table for supplied OEM
Table ID.
Creator ID 4 28 Vendor ID of utility that created the table. For tables containing
Definition Blocks, this is the ID for the ASL Compiler.
Creator Revision 4 32 Revision of utility that created the table. For tables containing
Definition Blocks, this is the revision for the ASL Compiler.
156 April, 2015 Version 6.0