# ./test/image/test-imagetools.sh
 
 BASEDIR=sandbox
-SRCDIR=sandbox/boot
+SRCDIR=${BASEDIR}/boot
 IMAGE_NAME="v1.0-test"
-IMAGE=linux.img
+IMAGE_MULTI=linux.img
 DATAFILE0=vmlinuz
 DATAFILE1=initrd.img
 DATAFILE2=System.map
        for file in ${DATAFILES}; do
                rm -f ${file} ${SRCDIR}/${file}
        done
-       rm -f ${IMAGE} ${DUMPIMAGE_LIST} ${MKIMAGE_LIST} ${TEST_OUT}
+       rm -f ${IMAGE_MULTI} ${DUMPIMAGE_LIST} ${MKIMAGE_LIST} ${TEST_OUT}
        rmdir ${SRCDIR}
 }
 
 # Check that two files are the same
 assert_equal()
 {
-       if ! diff $1 $2; then
+       if ! diff -u $1 $2; then
                echo "Failed."
                cleanup
                exit 1
        ${cmd} >${redir}
 }
 
-# Write files into an image
-create_image()
+# Write files into an multi-file image
+create_multi_image()
 {
        local files="${SRCDIR}/${DATAFILE0}:${SRCDIR}/${DATAFILE1}"
        files+=":${SRCDIR}/${DATAFILE2}"
 
-       echo -e "\nBuilding image..."
+       echo -e "\nBuilding multi-file image..."
        do_cmd ${MKIMAGE} -A x86 -O linux -T multi -n \"${IMAGE_NAME}\" \
-               -d ${files} ${IMAGE}
+               -d ${files} ${IMAGE_MULTI}
        echo "done."
 }
 
-# Extract files from an image
-extract_image()
+# Extract files from an multi-file image
+extract_multi_image()
 {
-       echo -e "\nExtracting image contents..."
-       do_cmd ${DUMPIMAGE} -i ${IMAGE} -p 0 ${DATAFILE0}
-       do_cmd ${DUMPIMAGE} -i ${IMAGE} -p 1 ${DATAFILE1}
-       do_cmd ${DUMPIMAGE} -i ${IMAGE} -p 2 ${DATAFILE2}
-       do_cmd ${DUMPIMAGE} -i ${IMAGE} -p 2 ${DATAFILE2} -o ${TEST_OUT}
+       echo -e "\nExtracting multi-file image contents..."
+       do_cmd ${DUMPIMAGE} -T multi -i ${IMAGE_MULTI} -p 0 ${DATAFILE0}
+       do_cmd ${DUMPIMAGE} -T multi -i ${IMAGE_MULTI} -p 1 ${DATAFILE1}
+       do_cmd ${DUMPIMAGE} -T multi -i ${IMAGE_MULTI} -p 2 ${DATAFILE2}
+       do_cmd ${DUMPIMAGE} -T multi -i ${IMAGE_MULTI} -p 2 ${DATAFILE2} -o ${TEST_OUT}
        echo "done."
 }
 
 # List the contents of a file
+# Args:
+#    image filename
 list_image()
 {
+       local image="$1"
+
        echo -e "\nListing image contents..."
-       do_cmd_redir ${MKIMAGE_LIST} ${MKIMAGE} -l ${IMAGE}
-       do_cmd_redir ${DUMPIMAGE_LIST} ${DUMPIMAGE} -l ${IMAGE}
+       do_cmd_redir ${MKIMAGE_LIST} ${MKIMAGE} -l ${image}
+       do_cmd_redir ${DUMPIMAGE_LIST} ${DUMPIMAGE} -l ${image}
        echo "done."
 }
 
 
        create_files
 
-       # Compress and extract multifile images, compare the result
-       create_image
-       extract_image
+       # Compress and extract multi-file images, compare the result
+       create_multi_image
+       extract_multi_image
        for file in ${DATAFILES}; do
                assert_equal ${file} ${SRCDIR}/${file}
        done
        assert_equal ${TEST_OUT} ${DATAFILE2}
 
-       # List contents and compares output fro tools
-       list_image
+       # List contents of multi-file image and compares output from tools
+       list_image ${IMAGE_MULTI}
        assert_equal ${DUMPIMAGE_LIST} ${MKIMAGE_LIST}
 
        # Remove files created
 
 
 static void usage(void);
 
-/* image_type_params linked list to maintain registered image types supports */
-static struct image_type_params *dumpimage_tparams;
-
 /* parameters initialized by core will be used by the image type code */
 static struct image_tool_params params = {
        .type = IH_TYPE_KERNEL,
  * returns negative if input image format does not match with any of
  * supported image types
  */
-static int dumpimage_extract_datafile(void *ptr, struct stat *sbuf)
+static int dumpimage_extract_datafile(struct image_type_params *tparams,
+               void *ptr, struct stat *sbuf)
 {
        int retval = -1;
-       struct image_type_params *curr;
-       struct image_type_params *start = ll_entry_start(
-                       struct image_type_params, image_type);
-       struct image_type_params *end = ll_entry_end(
-                       struct image_type_params, image_type);
-
-       for (curr = start; curr != end; curr++) {
-               if (curr->verify_header) {
-                       retval = curr->verify_header((unsigned char *)ptr,
-                                                    sbuf->st_size, ¶ms);
-                       if (retval != 0)
-                               continue;
-                       /*
-                        * Extract the file from the image
-                        * if verify is successful
-                        */
-                       if (curr->extract_datafile) {
-                               curr->extract_datafile(ptr, ¶ms);
-                       } else {
-                               fprintf(stderr,
-                                       "%s: extract_datafile undefined for %s\n",
-                                       params.cmdname, curr->name);
-                       break;
-                       }
+
+       if (tparams->verify_header) {
+               retval = tparams->verify_header((unsigned char *)ptr,
+                               sbuf->st_size, ¶ms);
+               if (retval != 0)
+                       return -1;
+               /*
+                * Extract the file from the image
+                * if verify is successful
+                */
+               if (tparams->extract_datafile) {
+                       retval = tparams->extract_datafile(ptr, ¶ms);
+               } else {
+                       fprintf(stderr,
+                               "%s: extract_datafile undefined for %s\n",
+                               params.cmdname, tparams->name);
+                       return -2;
                }
        }
 
 
        params.cmdname = *argv;
 
-       while ((opt = getopt(argc, argv, "li:o:p:V")) != -1) {
+       while ((opt = getopt(argc, argv, "li:o:T:p:V")) != -1) {
                switch (opt) {
                case 'l':
                        params.lflag = 1;
                case 'o':
                        params.outfile = optarg;
                        break;
+               case 'T':
+                       params.type = genimg_get_type_id(optarg);
+                       if (params.type < 0) {
+                               usage();
+                       }
+                       break;
                case 'p':
                        params.pflag = strtoul(optarg, &ptr, 10);
                        if (*ptr) {
                        exit(EXIT_SUCCESS);
                default:
                        usage();
+                       break;
                }
        }
 
        /* set tparams as per input type_id */
        tparams = imagetool_get_type(params.type);
        if (tparams == NULL) {
-               fprintf(stderr, "%s: unsupported type %s\n",
+               fprintf(stderr, "%s: unsupported type: %s\n",
                        params.cmdname, genimg_get_type_name(params.type));
                exit(EXIT_FAILURE);
        }
                        exit(EXIT_FAILURE);
                }
 
-               if ((unsigned)sbuf.st_size < tparams->header_size) {
+               if ((uint32_t)sbuf.st_size < tparams->header_size) {
                        fprintf(stderr,
                                "%s: Bad size: \"%s\" is not valid image\n",
                                params.cmdname, params.imagefile);
                         * Extract the data files from within the matched
                         * image type. Returns the error code if not matched
                         */
-                       retval = dumpimage_extract_datafile(ptr, &sbuf);
+                       retval = dumpimage_extract_datafile(tparams, ptr,
+                                       &sbuf);
                } else {
                        /*
                         * Print the image information for matched image type
                "          -l ==> list image header information\n",
                params.cmdname);
        fprintf(stderr,
-               "       %s -i image [-p position] [-o outfile] data_file\n"
-               "          -i ==> extract from the 'image' a specific 'data_file'"
-               ", indexed by 'position' (starting at 0)\n",
+               "       %s -i image -T type [-p position] [-o outfile] data_file\n"
+               "          -i ==> extract from the 'image' a specific 'data_file'\n"
+               "          -T ==> set image type to 'type'\n"
+               "          -p ==> 'position' (starting at 0) of the 'data_file' inside the 'image'\n",
                params.cmdname);
        fprintf(stderr,
                "       %s -V ==> print version information and exit\n",