diff --git a/tools/lpc.hpp b/tools/lpc.hpp
index 913fc5d..9e9c8b3 100644
--- a/tools/lpc.hpp
+++ b/tools/lpc.hpp
@@ -3,9 +3,19 @@
 #include "blob_interface.hpp"
 #include "interface.hpp"
 
+#include <cstdint>
+
 namespace host_tool
 {
 
+struct LpcRegion
+{
+    /* Host LPC address at which the chunk is to be mapped. */
+    std::uint32_t address;
+    /* Size of the chunk to be mapped. */
+    std::uint32_t length;
+};
+
 class LpcDataHandler : public DataInterface
 {
   public: