feat: Ahci, ACPI shutdown

2026-03-06 23:39:35 +01:00
parent 9e5b9b7584
commit 663567fbb3
18 changed files with 2046 additions and 11 deletions
@@ -0,0 +1,78 @@
+/*
+    * FADT.cpp
+    * Fixed ACPI Description Table parsing
+    * Copyright (c) 2026 Daniel Hammer
+*/
+
+#include "FADT.hpp"
+#include <Terminal/Terminal.hpp>
+#include <CppLib/Stream.hpp>
+#include <Memory/HHDM.hpp>
+
+using namespace Kt;
+
+namespace Hal {
+    namespace FADT {
+
+        static bool SignatureMatch(const char* sig, const char* target, int len) {
+            for (int i = 0; i < len; i++) {
+                if (sig[i] != target[i]) return false;
+            }
+            return true;
+        }
+
+        static Table* FindFADTInXSDT(ACPI::CommonSDTHeader* xsdt) {
+            uint32_t entryCount = (xsdt->Length - sizeof(ACPI::CommonSDTHeader)) / 8;
+            uint64_t* entries = (uint64_t*)((uint64_t)xsdt + sizeof(ACPI::CommonSDTHeader));
+
+            for (uint32_t i = 0; i < entryCount; i++) {
+                auto* header = (ACPI::CommonSDTHeader*)Memory::HHDM(entries[i]);
+                if (SignatureMatch(header->Signature, "FACP", 4)) {
+                    return (Table*)header;
+                }
+            }
+
+            return nullptr;
+        }
+
+        bool Parse(ACPI::CommonSDTHeader* xsdt, ParsedFADT& result) {
+            result.Valid = false;
+
+            auto* fadt = FindFADTInXSDT(xsdt);
+            if (fadt == nullptr) {
+                KernelLogStream(ERROR, "FADT") << "FADT table not found in XSDT";
+                return false;
+            }
+
+            if (!ACPI::TestChecksum(&fadt->Header)) {
+                KernelLogStream(ERROR, "FADT") << "FADT checksum failed";
+                return false;
+            }
+
+            KernelLogStream(OK, "FADT") << "Found FADT table";
+
+            // Prefer X_Dsdt (64-bit) if available, otherwise fall back to 32-bit Dsdt
+            if (fadt->Header.Length >= offsetof(Table, X_Dsdt) + 8 && fadt->X_Dsdt != 0) {
+                result.DsdtAddress = fadt->X_Dsdt;
+            } else {
+                result.DsdtAddress = fadt->Dsdt;
+            }
+
+            result.PM1aControlBlock = fadt->PM1aControlBlock;
+            result.PM1bControlBlock = fadt->PM1bControlBlock;
+            result.SMI_CommandPort  = fadt->SMI_CommandPort;
+            result.AcpiEnable       = fadt->AcpiEnable;
+            result.AcpiDisable      = fadt->AcpiDisable;
+            result.Valid            = true;
+
+            KernelLogStream(INFO, "FADT") << "DSDT at " << base::hex << result.DsdtAddress;
+            KernelLogStream(INFO, "FADT") << "PM1a_CNT_BLK: " << base::hex << (uint64_t)result.PM1aControlBlock;
+
+            if (result.PM1bControlBlock != 0) {
+                KernelLogStream(INFO, "FADT") << "PM1b_CNT_BLK: " << base::hex << (uint64_t)result.PM1bControlBlock;
+            }
+
+            return true;
+        }
+    };
+};