diff --git a/tools/blisp/CMakeLists.txt b/tools/blisp/CMakeLists.txt
index 9bc0f4e..b271dc4 100644
--- a/tools/blisp/CMakeLists.txt
+++ b/tools/blisp/CMakeLists.txt
@@ -2,7 +2,10 @@ set(ARGTABLE3_ENABLE_TESTS OFF CACHE BOOL "Enable unit tests")
 set(ARGTABLE3_ENABLE_EXAMPLES OFF CACHE BOOL "Enable examples")
 #set(ARGTABLE3_REPLACE_GETOPT OFF CACHE BOOL "Replace getopt in the system C library")
 
-add_executable(blisp src/main.c src/cmd/write.c src/util.c src/common.c src/cmd/iot.c src/cmd/dfu/dfu_file.c src/cmd/dfu/dfu_crc.c)
+add_executable(blisp src/main.c src/cmd/write.c src/util.c src/common.c src/cmd/iot.c)
+
+add_subdirectory(src/file_parsers)
+
 
 if(BLISP_USE_SYSTEM_LIBRARIES)
     find_package(Argtable3 REQUIRED)
@@ -18,7 +21,7 @@ target_include_directories(blisp PRIVATE
 
 target_link_libraries(blisp PRIVATE
         argtable3
-        libblisp_static)
+        libblisp_static file_parsers)
 
 if (WIN32)
     target_link_libraries(blisp PRIVATE Setupapi.lib)
diff --git a/tools/blisp/src/cmd/write.c b/tools/blisp/src/cmd/write.c
index 5eed5a8..e9381cc 100644
--- a/tools/blisp/src/cmd/write.c
+++ b/tools/blisp/src/cmd/write.c
@@ -178,6 +178,16 @@ blisp_return_t blisp_flash_firmware() {
     goto exit1;
   }
 
+  // Open the file to be flashed; to determine the size of the section of flash
+  // to erase
+  int64_t firmware_file_size = 0;
+  const uint32_t firmware_base_address_offset =
+      0x2000;  // Firmware files start 0x2000 offset into flash to skip the boot
+               // header
+  int64_t firmware_file_start_address = 0;
+
+
+
   FILE* firmware_file = fopen(binary_to_write->filename[0], "rb");
   if (firmware_file == NULL) {
     fprintf(stderr, "Failed to open firmware file \"%s\".\n",
@@ -185,9 +195,10 @@ blisp_return_t blisp_flash_firmware() {
     goto exit1;
   }
   fseek(firmware_file, 0, SEEK_END);
-  int64_t firmware_file_size = ftell(firmware_file);
+  firmware_file_size = ftell(firmware_file);
   rewind(firmware_file);
 
+  // Create a default boot header section in ram to be written out
   struct bfl_boot_header boot_header;
   fill_up_boot_header(&boot_header);
 
diff --git a/tools/blisp/src/file_parsers/CMakeLists.txt b/tools/blisp/src/file_parsers/CMakeLists.txt
new file mode 100644
index 0000000..71b0e8a
--- /dev/null
+++ b/tools/blisp/src/file_parsers/CMakeLists.txt
@@ -0,0 +1,23 @@
+list(APPEND ADD_INCLUDE
+"${CMAKE_CURRENT_SOURCE_DIR}/bin"
+"${CMAKE_CURRENT_SOURCE_DIR}/dfu"
+"${CMAKE_CURRENT_SOURCE_DIR}"
+)
+
+file(GLOB_RECURSE sources
+)
+list(APPEND ADD_SRCS  ${sources})
+
+add_library(file_parsers 
+"${CMAKE_CURRENT_SOURCE_DIR}/bin/bin_file.c"
+"${CMAKE_CURRENT_SOURCE_DIR}/dfu/dfu_file.c"
+"${CMAKE_CURRENT_SOURCE_DIR}/dfu/dfu_crc.c"
+"${CMAKE_CURRENT_SOURCE_DIR}/parse_file.c"
+)
+
+target_include_directories(file_parsers PUBLIC
+${CMAKE_CURRENT_SOURCE_DIR}/bin
+${CMAKE_CURRENT_SOURCE_DIR}/dfu
+${CMAKE_CURRENT_SOURCE_DIR}
+
+)
diff --git a/tools/blisp/src/file_parsers/bin/bin_file.c b/tools/blisp/src/file_parsers/bin/bin_file.c
new file mode 100644
index 0000000..e69de29
diff --git a/tools/blisp/src/cmd/dfu/dfu_crc.c b/tools/blisp/src/file_parsers/dfu/dfu_crc.c
similarity index 100%
rename from tools/blisp/src/cmd/dfu/dfu_crc.c
rename to tools/blisp/src/file_parsers/dfu/dfu_crc.c
diff --git a/tools/blisp/src/cmd/dfu/dfu_file.c b/tools/blisp/src/file_parsers/dfu/dfu_file.c
similarity index 100%
rename from tools/blisp/src/cmd/dfu/dfu_file.c
rename to tools/blisp/src/file_parsers/dfu/dfu_file.c
diff --git a/tools/blisp/src/cmd/dfu/dfu_file.h b/tools/blisp/src/file_parsers/dfu/dfu_file.h
similarity index 52%
rename from tools/blisp/src/cmd/dfu/dfu_file.h
rename to tools/blisp/src/file_parsers/dfu/dfu_file.h
index d61c516..22faf9a 100644
--- a/tools/blisp/src/cmd/dfu/dfu_file.h
+++ b/tools/blisp/src/file_parsers/dfu/dfu_file.h
@@ -13,9 +13,11 @@
 #ifdef __cplusplus
 extern "C" {
 #endif
-
-int dfu_file_parse(const char* file_path_on_disk, uint8_t** payload,
-                   size_t* payload_length, size_t* payload_address);
+// Parse the dfu file and returns 0 if ok, or -ve on error parsing
+int dfu_file_parse(const char* file_path_on_disk,
+                   uint8_t** payload,
+                   size_t* payload_length,
+                   size_t* payload_address);
 // Internal
 
 uint32_t crc32_byte(uint32_t accum, uint8_t delta);
@@ -23,4 +25,4 @@ uint32_t crc32_byte(uint32_t accum, uint8_t delta);
 };
 #endif
 
-#endif // BLISP_DFU_FILE_H
+#endif  // BLISP_DFU_FILE_H
diff --git a/tools/blisp/src/cmd/dfu/tests/CMakeLists.txt b/tools/blisp/src/file_parsers/dfu/tests/CMakeLists.txt
similarity index 100%
rename from tools/blisp/src/cmd/dfu/tests/CMakeLists.txt
rename to tools/blisp/src/file_parsers/dfu/tests/CMakeLists.txt
diff --git a/tools/blisp/src/cmd/dfu/tests/Config.h.in b/tools/blisp/src/file_parsers/dfu/tests/Config.h.in
similarity index 100%
rename from tools/blisp/src/cmd/dfu/tests/Config.h.in
rename to tools/blisp/src/file_parsers/dfu/tests/Config.h.in
diff --git a/tools/blisp/src/cmd/dfu/tests/test.dfu b/tools/blisp/src/file_parsers/dfu/tests/test.dfu
similarity index 100%
rename from tools/blisp/src/cmd/dfu/tests/test.dfu
rename to tools/blisp/src/file_parsers/dfu/tests/test.dfu
diff --git a/tools/blisp/src/cmd/dfu/tests/test_dfu_file.cpp b/tools/blisp/src/file_parsers/dfu/tests/test_dfu_file.cpp
similarity index 100%
rename from tools/blisp/src/cmd/dfu/tests/test_dfu_file.cpp
rename to tools/blisp/src/file_parsers/dfu/tests/test_dfu_file.cpp
diff --git a/tools/blisp/src/file_parsers/parse_file.c b/tools/blisp/src/file_parsers/parse_file.c
new file mode 100644
index 0000000..9c1ccc1
--- /dev/null
+++ b/tools/blisp/src/file_parsers/parse_file.c
@@ -0,0 +1,7 @@
+#include "parse_file.h"
+
+int parse_firmware_file(const char* file_path_on_disk,
+                        parsed_firmware_file_t* parsed_results) {
+  // Switchcase on the extension of the file
+  
+}
\ No newline at end of file
diff --git a/tools/blisp/src/file_parsers/parse_file.h b/tools/blisp/src/file_parsers/parse_file.h
new file mode 100644
index 0000000..c10d4f5
--- /dev/null
+++ b/tools/blisp/src/file_parsers/parse_file.h
@@ -0,0 +1,13 @@
+#pragma once
+#include "parsed_firmware_file.h"
+
+#define PARSED_ERROR_TOO_BIG = -0x1000 /* Input expands to be too big */
+#define PARSED_ERROR_BAD_DFU = -0x1001 /* DFU file provided but not valid */
+
+// This attempts to parse the given file, and returns the parsed version of that
+// file. This will handle any repacking required to create one contigious file
+// Eg if the input file has holes,they will be 0x00 filled
+// And headers etc are parsed to determine start position
+
+int parse_firmware_file(const char* file_path_on_disk,
+                        parsed_firmware_file_t* parsed_results);
diff --git a/tools/blisp/src/file_parsers/parsed_firmware_file.h b/tools/blisp/src/file_parsers/parsed_firmware_file.h
new file mode 100644
index 0000000..44a5e7f
--- /dev/null
+++ b/tools/blisp/src/file_parsers/parsed_firmware_file.h
@@ -0,0 +1,14 @@
+#pragma once
+#include <stdint.h>
+#include <stdio.h>
+
+// Parsed firmware file is a generic struct that we parse from a user input
+// firmware file This is used so that we can (relatively) seamlessly handle
+// .bin, .hex and .def files
+
+typedef struct {
+  bool needs_boot_struct;  // If true, boot struct should be generated
+  uint8_t* payload;        // The main firmware payload
+  size_t payload_length;   // Size of the payload
+  size_t payload_address;  // Start address of the payload
+} parsed_firmware_file_t;
diff --git a/tools/blisp/src/main.c b/tools/blisp/src/main.c
index 566b518..5861994 100644
--- a/tools/blisp/src/main.c
+++ b/tools/blisp/src/main.c
@@ -45,7 +45,7 @@ int8_t args_parse_exec(int argc, char** argv) {
       print_help();
       return BLISP_OK;
     } else if (version->count) {
-      printf("blisp v0.0.3\n");
+      printf("blisp v0.0.4\n");
       printf("Copyright (C) 2023 Marek Kraus and PINE64 Community\n");
       return BLISP_OK;
     }