feat(ACPI): Add rudimentary ACPI support

2025-05-08 19:20:19 +02:00
parent d63addfb64
commit 0874aa8784
6 changed files with 177 additions and 1 deletions
@@ -0,0 +1,46 @@
+#pragma once
+#include <cstdint>
+
+namespace Hal {
+    class ACPI {
+    
+    public:
+        struct XSDP {
+            char Signature[8];
+            std::uint8_t Checksum;
+            char OEMID[6];
+            std::uint8_t Revision;
+            std::uint32_t RSDTAddress; // Deprecated(!)
+
+            // Xtended values
+            std::uint32_t Length;
+            std::uint64_t XSDTAddress;
+            std::uint8_t ExtendedChecksum;
+            std::uint8_t Reserved[3];
+
+            bool TestChecksum();
+            const char* GetOEMID();
+        }__attribute__((packed));
+
+        struct CommonSDTHeader {
+            char Signature[4];
+            std::uint32_t Length;
+            std::uint8_t Revision;
+            std::uint8_t Checksum;
+            char OEMID[6];
+            char OEMTableID[8];
+            std::uint32_t OEMRevision;
+            std::uint32_t CreatorID;
+            std::uint32_t CreatorRevision;
+        }__attribute__((packed));
+
+        ACPI(XSDP* xsdp);
+
+        void HandleXSDT(CommonSDTHeader* sdtHeader);
+        void HandleRSDT(CommonSDTHeader* sdtHeader);
+
+        static bool TestChecksum(CommonSDTHeader* header);
+
+        CommonSDTHeader* FindNextTable(CommonSDTHeader* table);
+    };
+};