diff --git a/src/hulk/bootinfo.d b/src/hulk/bootinfo.d
index 0777fa9..d152bc9 100644
--- a/src/hulk/bootinfo.d
+++ b/src/hulk/bootinfo.d
@@ -1,25 +1,52 @@
+/**
+ * HULK boot information.
+ */
 module hulk.bootinfo;
 
+/**
+ * HULK boot information structure.
+ */
 struct BootInfo
 {
-    struct MemoryRegion
-    {
-        ulong base;
-        size_t size;
-        ubyte type;
-    }
+    /**
+     * Framebuffer description structure.
+     */
     struct Framebuffer
     {
+        /** Framebuffer base address. */
         uint * buffer;
+        /** Horizontal resolution. */
         uint width;
+        /** Vertical resolution. */
         uint height;
+        /** Number of pixels per scan line. */
         uint stride;
+        /** Pixel format. */
         uint format;
     }
 
+    /**
+     * Memory map entry description structure.
+     */
+    struct MemoryRegion
+    {
+        /** Base address of the memory region. */
+        ulong base;
+        /** Size in bytes of the memory region. */
+        size_t size;
+        /** Type of the memory region. */
+        ubyte type;
+    }
+
+    /* Framebuffer parameters. */
     Framebuffer fb;
+
+    /* Memory map. */
     MemoryRegion[800] memory_map;
+
+    /* Number of memory map entries. */
     size_t memory_map_count;
 }
 
+/** HULK base virtual address. */
 enum ulong HULK_VIRTUAL_START = 0x0000_4000_0000_0000u;