feat: Local/IO APIC, PS/2 keyboard & mouse

2026-02-17 12:44:31 +01:00
parent e2f059bf90
commit 641ec4681b
26 changed files with 1730 additions and 3 deletions
@@ -0,0 +1,82 @@
+/*
+    * MADT.hpp
+    * Multiple APIC Description Table parsing
+    * Copyright (c) 2025 Daniel Hammer
+*/
+
+#pragma once
+#include <cstdint>
+#include <ACPI/ACPI.hpp>
+
+namespace Hal {
+    namespace MADT {
+        struct Header {
+            Hal::ACPI::CommonSDTHeader SDTHeader;
+            uint32_t LocalApicAddress;
+            uint32_t Flags;
+        }__attribute__((packed));
+
+        struct EntryHeader {
+            uint8_t Type;
+            uint8_t Length;
+        }__attribute__((packed));
+
+        // Type 0: Processor Local APIC
+        struct LocalApicEntry {
+            EntryHeader Header;
+            uint8_t ProcessorId;
+            uint8_t ApicId;
+            uint32_t Flags;
+        }__attribute__((packed));
+
+        // Type 1: I/O APIC
+        struct IoApicEntry {
+            EntryHeader Header;
+            uint8_t IoApicId;
+            uint8_t Reserved;
+            uint32_t IoApicAddress;
+            uint32_t GlobalSystemInterruptBase;
+        }__attribute__((packed));
+
+        // Type 2: Interrupt Source Override
+        struct InterruptSourceOverride {
+            EntryHeader Header;
+            uint8_t BusSource;
+            uint8_t IrqSource;
+            uint32_t GlobalSystemInterrupt;
+            uint16_t Flags;
+        }__attribute__((packed));
+
+        // Type 4: Non-Maskable Interrupt
+        struct NmiEntry {
+            EntryHeader Header;
+            uint8_t ProcessorId;
+            uint16_t Flags;
+            uint8_t Lint;
+        }__attribute__((packed));
+
+        // Type 5: Local APIC Address Override
+        struct LocalApicAddressOverride {
+            EntryHeader Header;
+            uint16_t Reserved;
+            uint64_t LocalApicAddress;
+        }__attribute__((packed));
+
+        struct ParsedMADT {
+            uint64_t LocalApicAddress;
+            uint64_t IoApicAddress;
+            uint8_t IoApicId;
+            uint32_t IoApicGsiBase;
+
+            static constexpr int MaxOverrides = 16;
+            InterruptSourceOverride Overrides[MaxOverrides];
+            int OverrideCount;
+
+            static constexpr int MaxLocalApics = 16;
+            LocalApicEntry LocalApics[MaxLocalApics];
+            int LocalApicCount;
+        };
+
+        bool Parse(ACPI::CommonSDTHeader* xsdt, ParsedMADT& result);
+    };
+};