...

src/arch/arch.h

@@ -1,4 +1,21 @@
 #pragma once
 
+#include <stddef.h>
+#include <stdint.h>
+
+typedef struct
+{
+    uint64_t base_address;
+    size_t length;
+} memory_region_t;
+
+typedef struct
+{
+    memory_region_t* regions;
+    size_t num_regions;
+} memory_map_t;
+
 void panic();
-void put_char(char character);
+void put_char(char character);
+
+extern memory_map_t memory_map;