Module acpi 

ACPI (Advanced Configuration and Power Interface) support. Inspired by Theseus OS, MaestroOS, Aero, and Redox.

Features:

• RSDP/RSDT/XSDT parsing
• MADT (interrupts, APICs)
• FADT (power management, DSDT)
• HPET (timers)
• MCFG (PCIe MMCONFIG)
• DMAR (IOMMU)
• WAET (VM optimization hints)
• BGRT (boot graphics)
• SLIT (NUMA distances)

TODO : take a look at the v6 : https://uefi.org/sites/default/files/resources/ACPI_Spec_6.6.pdf https://uefi.org/specs/ACPI/6.6/

Modules

bgrt

Support for the BGRT ACPI table (Boot Graphics Resource Table). Provides information about the boot logo/image.

dmar

Definitions for the DMAR, the Direct Memory Access (DMA) Remapping ACPI table. Inspired by Theseus OS.

fadt

Definitions for FADT, the Fixed ACPI Description Table. Inspired by Theseus OS.

hpet

Support for the HPET: High Precision Event Timer. Inspired by Theseus OS.

madt

Support for the MADT ACPI table, which includes interrupt and multicore info. Inspired by Theseus OS.

mcfg

Support for MCFG (PCI Express MMCONFIG) ACPI table.

rsdt

Definitions for the ACPI RSDT and XSDT system tables. Inspired by Theseus OS.

sdt

ACPI table definitions and basic SDT structures. Inspired by Theseus OS.

slit

Support for the SLIT ACPI table (System Locality Information Table). Provides information about NUMA node distances.

waet

Definitions for WAET, the Windows ACPI Emulated devices Table. Inspired by Theseus OS.

Structs

AcpiTables

Table storage to keep track of discovered ACPI tables

Rsdp 🔒

RSDP (Root System Descriptor Pointer) : ACPI 1.0

Rsdp2 🔒

RSDP extended : ACPI 2.0+

Statics

ACPI_INITIALIZED 🔒

ACPI initialization status

ACPI_TABLES 🔒

RSDP_REVISION 🔒

RSDP revision (0 = ACPI 1.0, 2+ = ACPI 2.0+)

RSDP_VADDR 🔒

Stored RSDP virtual address (set during init)

Functions

discover_tables 🔒

Performs the discover tables operation.

find_table

Find the first ACPI table by its 4-byte signature.

find_tables

Find all ACPI tables with the given 4-byte signature.

get_bgrt

Get BGRT table (boot graphics)

get_fadt

Get FADT table

get_hpet

Get HPET table

get_madt

Get MADT table

get_mcfg

Get MCFG table

get_slit

Get SLIT table (NUMA distances)

get_table

Get a typed reference to an ACPI table.

init

Initialize the ACPI subsystem.

is_available

Check if ACPI is initialized

revision

Get ACPI revision

rsdp_address

Get RSDP address

validate_checksum 🔒

Performs the validate checksum operation.

validate_sdt_at_phys 🔒

Performs the validate sdt at phys operation.