Advanced Configuration and Power Interface Specification

ACPI Software Programming Model
Field
X_PM_TMR_BLK 12 208 Extended address of the Power Management Timer Control
Register Block, represented in Generic Address Structure
format. See Section 4.8.3.3, “Power Management Timer
(PM_TMR),” for a hardware description layout of this register
block. This field is optional; if this register block is not
supported, this field contains zero.
X_GPE0_BLK 12 220 Extended address of the General-Purpose Event 0 Register
Block, represented in Generic Address Structure format. See
Section 5.2.9 “Fixed ACPI Description Table,” for a hardware
description of this register block. This is an optional field; if
this register block is not supported, this field contains zero.
X_GPE1_BLK 12 232 Extended address of the General-Purpose Event 1 Register
Block, represented in Generic Address Structure format. See
Section 5.2.9, “Fixed ACPI Description Table,” for a hardware
description of this register block. This is an optional field; if
this register block is not supported, this field contains zero.
SLEEP_CONTROL_RE
G
12 244 The address of the Sleep register, represented in Generic
Address Structure format (See Section 4.8.3.7, "Sleep
Control and Status Registers," for a description of the sleep
mechanism.)
Note: Only System I/O space, System Memory space and
PCI Configuration space (bus #0) are valid for values for
Address_Space_ID. Also, Register_Bit_Width must be 8 and
Register_Bit_Offset must be 0.
SLEEP_STATUS_REG 12 256 The address of the Sleep status register, represented in
Generic Address Structure format (See Section 4.8.3.7,
"Sleep Control and Status Registers," for a description of the
sleep mechanism.)
Note: Only System I/O space, System Memory space and
PCI Configuration space (bus #0) are valid for values for
Address_Space_ID. Also, Register_Bit_Width must be 8 and
Register_Bit_Offset must be 0.
Hypervisor Vendor
Identity
Byte
Length
Byte
Offset
Description
8 268 64-bit identifier of hypervisor vendor. All bytes in this field are
considered part of the vendor identity.
These identifiers are defined independently by the vendors
themselves, usually following the name of the hypervisor
product.
Version information should NOT be included in this field - this
shall simply denote the vendor's name or identifier. Version
information can be communicated through a supplemental
vendor-specific hypervisor API.
Firmware implementers would place zero bytes into this field,
denoting that no hypervisor is present in the actual firmware.
Version 6.0 123