the ACPI PM register length.
Section 4.8.4.1.1, 4.8.4.1.2 Fixed event bits in both PM1 Status and PM1 Enable registers.
Section 4.8.5.1.1.2 General-Purpose Event 0 Enable Register, ACPI Spec Version 6.4
Register Location: <GPE0_EN> System I/O or System Memory Space (defined in FADT)
Size: GPE0_BLK_LEN/2 (defined in FADT)
Section 4.8.5.1 General-Purpose Event Register Blocks, ACPI Spec Version 6.4
Section 4.8.4.2.1 PM1 Control Registers, ACPI Spec Version 6.4
Register Location: <PM1a_CNT_BLK / PM1b_CNT_BLK> System I/O or Memory Space (defined in FADT)
Size: PM1_CNT_LEN (defined in FADT)
Section 4.8.4.1.2 PM1Enable Registers, ACPI Spec Version 6.4
Register Location: <<PM1a_EVT_BLK / PM1b_EVT_BLK> + PM1_EVT_LEN / 2 System I/O or Memory Space
(defined in FADT)
Size: PM1_EVT_LEN / 2 (defined in FADT)
ACPI PM register value definitions
Section 4.8.4.1.1 PM1 Status Registers, ACPI Spec Version 6.4
Register Location: <PM1a_EVT_BLK / PM1b_EVT_BLK> System I/O or Memory Space (defined in FADT)
Size: PM1_EVT_LEN / 2 (defined in FADT)