feat: DTB now populates VMBootMemoryMap structure.

Kernel/Include/Arch/DTB.h

@@ -1,6 +1,7 @@
 #pragma once
 
 #include <Types.h>
+#include <VM/PMM.h>
 
 typedef struct FDTHeader {
     UInt32 magic;                // 0xd00dfeed
@@ -32,4 +33,4 @@ enum {
     kFDTHeaderMagic = 0xd00dfeed,
 };
 
-void DTBParse(Pointer dtb);
+void DTBParse(Pointer dtb, VMBootMemoryMap* bootMap);

Kernel/Include/Lib/Stubs.h

@@ -0,0 +1,4 @@
+#pragma once
+#include <Types.h>
+
+void* memset(void* destination, int value, Size count);

Kernel/Include/VM/PMM.h

@@ -0,0 +1,19 @@
+#pragma once
+#include <Types.h>
+
+enum {
+    kVMPageSize = 4096,
+    kVMBlocksPerByte = 8,
+    kVMMaxReservedRegions = 128,
+};
+
+typedef struct {
+    UInt64 base;
+    Size size;
+} VMMemoryRegion;
+
+typedef struct {
+    VMMemoryRegion totalRAM;
+    VMMemoryRegion reserved[kVMMaxReservedRegions];
+    UInt32 reservedCount;
+} VMBootMemoryMap;