diff --git a/sdk/xtdk/xtfw.h b/sdk/xtdk/xtfw.h
new file mode 100644
index 0000000..0f2fa7c
--- /dev/null
+++ b/sdk/xtdk/xtfw.h
@@ -0,0 +1,48 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            sdk/xtdk/xtfw.h
+ * DESCRIPTION:     EFI-dependent XT structures
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#ifndef __XTDK_XTFW_H
+#define __XTDK_XTFW_H
+
+#include "xttypes.h"
+
+
+/* Memory allocation structures */
+typedef enum _LOADER_MEMORY_TYPE
+{
+    LoaderExceptionBlock,
+    LoaderSystemBlock,
+    LoaderFree,
+    LoaderBad,
+    LoaderLoadedProgram,
+    LoaderFirmwareTemporary,
+    LoaderFirmwarePermanent,
+    LoaderOsloaderHeap,
+    LoaderOsloaderStack,
+    LoaderSystemCode,
+    LoaderHalCode,
+    LoaderBootDriver,
+    LoaderConsoleInDriver,
+    LoaderConsoleOutDriver,
+    LoaderStartupDpcStack,
+    LoaderStartupKernelStack,
+    LoaderStartupPanicStack,
+    LoaderStartupPcrPage,
+    LoaderStartupPdrPage,
+    LoaderRegistryData,
+    LoaderMemoryData,
+    LoaderNlsData,
+    LoaderSpecialMemory,
+    LoaderBBTMemory,
+    LoaderReserve,
+    LoaderXIPRom,
+    LoaderHALCachedMemory,
+    LoaderMaximum
+} LOADER_MEMORY_TYPE, *PLOADER_MEMORY_TYPE;
+
+#endif /* __XTDK_XTFW_H */
diff --git a/sdk/xtdk/xtkmapi.h b/sdk/xtdk/xtkmapi.h
index 84b5ba8..3551523 100644
--- a/sdk/xtdk/xtkmapi.h
+++ b/sdk/xtdk/xtkmapi.h
@@ -22,6 +22,7 @@
 #include "xtcommon.h"
 #include "xtimage.h"
 #include "xtuefi.h"
+#include "xtfw.h"
 
 /* Low level data types headers */
 #include "rtltypes.h"