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cf48200e7b
Expose the DSDT table in ACPI::Parser and in /sys/firmware/acpi as a first little step toward interpreting the AML bytecode from ACPI.
338 lines
8.5 KiB
C++
338 lines
8.5 KiB
C++
/*
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* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Types.h>
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#include <Kernel/PhysicalAddress.h>
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namespace Kernel::ACPI {
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namespace FADTFlags {
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// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#fixed-acpi-description-table-fixed-feature-flags
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enum class FeatureFlags : u32 {
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WBINVD = 1 << 0,
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WBINVD_FLUSH = 1 << 1,
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PROC_C1 = 1 << 2,
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P_LVL2_UP = 1 << 3,
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PWR_BUTTON = 1 << 4,
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SLP_BUTTON = 1 << 5,
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FIX_RTC = 1 << 6,
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RTC_s4 = 1 << 7,
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TMR_VAL_EXT = 1 << 8,
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DCK_CAP = 1 << 9,
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RESET_REG_SUPPORTED = 1 << 10,
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SEALED_CASE = 1 << 11,
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HEADLESS = 1 << 12,
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CPU_SW_SLP = 1 << 13,
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PCI_EXP_WAK = 1 << 14,
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USE_PLATFORM_CLOCK = 1 << 15,
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S4_RTC_STS_VALID = 1 << 16,
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REMOTE_POWER_ON_CAPABLE = 1 << 17,
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FORCE_APIC_CLUSTER_MODEL = 1 << 18,
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FORCE_APIC_PHYSICAL_DESTINATION_MODE = 1 << 19,
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HW_REDUCED_ACPI = 1 << 20,
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LOW_POWER_S0_IDLE_CAPABLE = 1 << 21
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};
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// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#fixed-acpi-description-table-boot-ia-pc-boot-architecture-flags
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enum class IA_PC_Flags : u8 {
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Legacy_Devices = 1 << 0,
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PS2_8042 = 1 << 1,
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VGA_Not_Present = 1 << 2,
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MSI_Not_Supported = 1 << 3,
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PCIe_ASPM_Controls = 1 << 4,
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CMOS_RTC_Not_Present = 1 << 5
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};
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struct [[gnu::packed]] HardwareFeatures {
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bool wbinvd : 1;
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bool wbinvd_flush : 1;
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bool processor_c1 : 1;
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bool multiprocessor_c2 : 1;
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bool power_button : 1;
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bool sleep_button : 1;
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bool fix_rtc : 1;
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bool rtc_s4 : 1;
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bool timer_value_extension : 1;
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bool docking_capability : 1;
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bool reset_register_supported : 1;
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bool sealed_case : 1;
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bool headless : 1;
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bool cpu_software_sleep : 1;
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bool pci_express_wake : 1;
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bool use_platform_clock : 1;
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bool s4_rtc_status_valid : 1;
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bool remote_power_on_capable : 1;
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bool force_apic_cluster_model : 1;
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bool force_apic_physical_destination_mode : 1;
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bool hardware_reduced_acpi : 1;
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bool low_power_s0_idle_capable : 1;
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};
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struct [[gnu::packed]] x86_Specific_Flags {
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bool legacy_devices : 1;
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bool keyboard_8042 : 1;
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bool vga_not_present : 1;
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bool msi_not_supported : 1;
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bool cmos_rtc_not_present : 1;
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};
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};
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namespace GenericAddressStructure {
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enum class AddressSpace {
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SystemMemory = 0,
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SystemIO = 1,
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PCIConfigurationSpace = 2,
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EmbeddedController = 3,
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SMBus = 4,
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PCC = 0xA,
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FunctionalFixedHardware = 0x7F
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};
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enum class AccessSize {
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Undefined = 0,
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Byte = 1,
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Word = 2,
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DWord = 3,
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QWord = 4
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};
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enum class BitWidth {
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Undefined = 0,
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Byte = 8,
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Word = 16,
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DWord = 32,
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QWord = 64
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};
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}
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namespace Structures {
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// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#root-system-description-pointer-rsdp-structure
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struct [[gnu::packed]] RSDPDescriptor {
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char sig[8];
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u8 checksum;
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char oem_id[6];
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u8 revision;
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u32 rsdt_ptr;
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};
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struct [[gnu::packed]] RSDPDescriptor20 {
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RSDPDescriptor base;
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u32 length;
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u64 xsdt_ptr;
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u8 ext_checksum;
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u8 reserved[3];
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};
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// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#system-description-table-header
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struct [[gnu::packed]] SDTHeader {
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char sig[4];
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u32 length;
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u8 revision;
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u8 checksum;
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char oem_id[6];
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char oem_table_id[8];
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u32 oem_revision;
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u32 creator_id;
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u32 creator_revision;
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};
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// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#root-system-description-table-rsdt
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struct [[gnu::packed]] RSDT {
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SDTHeader h;
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u32 table_ptrs[];
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};
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// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#extended-system-description-table-xsdt
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struct [[gnu::packed]] XSDT {
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SDTHeader h;
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u64 table_ptrs[];
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};
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struct [[gnu::packed]] GenericAddressStructure {
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u8 address_space;
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u8 bit_width;
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u8 bit_offset;
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u8 access_size;
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u64 address;
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};
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struct [[gnu::packed]] HPET {
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SDTHeader h;
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u8 hardware_revision_id;
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u8 attributes;
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u16 pci_vendor_id;
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GenericAddressStructure event_timer_block;
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u8 hpet_number;
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u16 mininum_clock_tick;
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u8 page_protection;
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};
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// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#fixed-acpi-description-table-fadt
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struct [[gnu::packed]] FADT {
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SDTHeader h;
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u32 firmware_ctrl;
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u32 dsdt_ptr;
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u8 reserved;
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u8 preferred_pm_profile;
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u16 sci_int;
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u32 smi_cmd;
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u8 acpi_enable_value;
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u8 acpi_disable_value;
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u8 s4bios_req;
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u8 pstate_cnt;
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u32 PM1a_EVT_BLK;
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u32 PM1b_EVT_BLK;
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u32 PM1a_CNT_BLK;
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u32 PM1b_CNT_BLK;
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u32 PM2_CNT_BLK;
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u32 PM_TMR_BLK;
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u32 GPE0_BLK;
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u32 GPE1_BLK;
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u8 PM1_EVT_LEN;
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u8 PM1_CNT_LEN;
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u8 PM2_CNT_LEN;
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u8 PM_TMR_LEN;
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u8 GPE0_BLK_LEN;
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u8 GPE1_BLK_LEN;
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u8 GPE1_BASE;
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u8 cst_cnt;
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u16 P_LVL2_LAT;
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u16 P_LVL3_LAT;
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u16 flush_size;
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u16 flush_stride;
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u8 duty_offset;
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u8 duty_width;
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u8 day_alrm;
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u8 mon_alrm;
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u8 century;
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u16 ia_pc_boot_arch_flags;
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u8 reserved2;
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u32 flags;
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GenericAddressStructure reset_reg;
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u8 reset_value;
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u16 arm_boot_arch;
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u8 fadt_minor_version;
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u64 x_firmware_ctrl;
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u64 x_dsdt;
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GenericAddressStructure x_pm1a_evt_blk;
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GenericAddressStructure x_pm1b_evt_blk;
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GenericAddressStructure x_pm1a_cnt_blk;
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GenericAddressStructure x_pm1b_cnt_blk;
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GenericAddressStructure x_pm2_cnt_blk;
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GenericAddressStructure x_pm_tmr_blk;
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GenericAddressStructure x_gpe0_blk;
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GenericAddressStructure x_gpe1_blk;
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GenericAddressStructure sleep_control;
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GenericAddressStructure sleep_status;
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u64 hypervisor_vendor_identity;
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};
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// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#interrupt-controller-structure-types
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enum class MADTEntryType {
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LocalAPIC = 0x0,
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IOAPIC = 0x1,
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InterruptSourceOverride = 0x2,
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NMI_Source = 0x3,
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LocalAPIC_NMI = 0x4,
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LocalAPIC_Address_Override = 0x5,
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IO_SAPIC = 0x6,
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Local_SAPIC = 0x7,
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Platform_interrupt_Sources = 0x8,
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Local_x2APIC = 0x9,
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Local_x2APIC_NMI = 0xA,
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GIC_CPU = 0xB,
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GIC_Distributor = 0xC,
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GIC_MSI = 0xD,
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GIC_Redistrbutor = 0xE,
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GIC_Interrupt_Translation = 0xF
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};
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struct [[gnu::packed]] MADTEntryHeader {
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u8 type;
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u8 length;
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};
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namespace MADTEntries {
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// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#i-o-apic-structure
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struct [[gnu::packed]] IOAPIC {
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MADTEntryHeader h;
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u8 ioapic_id;
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u8 reserved;
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u32 ioapic_address;
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u32 gsi_base;
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};
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// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#processor-local-apic-structure
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struct [[gnu::packed]] ProcessorLocalAPIC {
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MADTEntryHeader h;
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u8 acpi_processor_id;
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u8 apic_id;
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u32 flags;
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};
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// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#processor-local-x2apic-structure
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struct [[gnu::packed]] ProcessorLocalX2APIC {
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MADTEntryHeader h;
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u16 reserved;
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u32 apic_id;
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u32 flags;
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u32 acpi_processor_id;
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};
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// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#interrupt-source-override-structure
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struct [[gnu::packed]] InterruptSourceOverride {
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MADTEntryHeader h;
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u8 bus;
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u8 source;
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u32 global_system_interrupt;
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u16 flags;
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};
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}
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// https://uefi.org/specs/ACPI/6.4/05_ACPI_Software_Programming_Model/ACPI_Software_Programming_Model.html#multiple-apic-description-table-madt-format
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struct [[gnu::packed]] MADT {
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SDTHeader h;
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u32 lapic_address;
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u32 flags;
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MADTEntryHeader entries[];
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};
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struct [[gnu::packed]] AMLTable {
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SDTHeader h;
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char aml_code[];
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};
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struct [[gnu::packed]] PCI_MMIO_Descriptor {
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u64 base_addr;
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u16 seg_group_number;
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u8 start_pci_bus;
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u8 end_pci_bus;
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u32 reserved;
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};
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struct [[gnu::packed]] MCFG {
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SDTHeader header;
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u64 reserved;
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PCI_MMIO_Descriptor descriptors[];
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};
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struct [[gnu::packed]] DSDT {
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SDTHeader h;
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unsigned char definition_block[];
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};
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}
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class Parser;
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namespace StaticParsing {
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Optional<PhysicalAddress> find_rsdp();
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Optional<PhysicalAddress> find_table(PhysicalAddress rsdp, StringView signature);
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}
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}
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