tools: mkimage/dumpimage: Allow to use -l with -T

Currently -l option for mkimage and dumpimage ignores option -T and always
tries to autodetect image type.

With this change it is possible to tell mkimage and dumpimage to parse
image file as specific type (and not random autodetected type). This allows
to use mkimage -l or dumpimage -l as tool for validating image.

params.type for -l option is now by default initialized to zero
(IH_TYPE_INVALID) instead of IH_TYPE_KERNEL. imagetool_get_type() for
IH_TYPE_INVALID returns NULL, which is assigned to tparams. mkimage and
dumpimage code is extended to handle tparams with NULL for -l option. And
imagetool_verify_print_header() is extended to do validation via tparams if
is not NULL.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Simon Glass <sjg@chromium.org>

1 files changed, 14 insertions, 22 deletions

diff --git a/tools/mkimage.c b/tools/mkimage.c
index c8f4ecd473d..760145119dc 100644
--- a/tools/mkimage.c
+++ b/tools/mkimage.c
@@ -82,8 +82,9 @@ static int show_valid_options(enum ih_category category)
 static void usage(const char *msg)
 {
 	fprintf(stderr, "Error: %s\n", msg);
-	fprintf(stderr, "Usage: %s -l image\n"
-			 "          -l ==> list image header information\n",
+	fprintf(stderr, "Usage: %s [-T type] -l image\n"
+			 "          -l ==> list image header information\n"
+			 "          -T ==> parse image file as 'type'\n",
 		params.cmdname);
 	fprintf(stderr,
 		"       %s [-x] -A arch -O os -T type -C comp -a addr -e ep -n name -d data_file[:data_file...] image\n"
@@ -329,7 +330,7 @@ static void process_args(int argc, char **argv)
 			params.datafile = datafile;
 		else if (!params.datafile)
 			usage("Missing data file for auto-FIT (use -d)");
-	} else if (type != IH_TYPE_INVALID) {
+	} else if (params.lflag || type != IH_TYPE_INVALID) {
 		if (type == IH_TYPE_SCRIPT && !params.datafile)
 			usage("Missing data file for script (use -d)");
 		params.type = type;
@@ -358,7 +359,7 @@ int main(int argc, char **argv)
 
 	/* set tparams as per input type_id */
 	tparams = imagetool_get_type(params.type);
-	if (tparams == NULL) {
+	if (tparams == NULL && !params.lflag) {
 		fprintf (stderr, "%s: unsupported type %s\n",
 			params.cmdname, genimg_get_type_name(params.type));
 		exit (EXIT_FAILURE);
@@ -368,14 +369,14 @@ int main(int argc, char **argv)
 	 * check the passed arguments parameters meets the requirements
 	 * as per image type to be generated/listed
 	 */
-	if (tparams->check_params)
+	if (tparams && tparams->check_params)
 		if (tparams->check_params (&params))
 			usage("Bad parameters for image type");
 
 	if (!params.eflag) {
 		params.ep = params.addr;
 		/* If XIP, entry point must be after the U-Boot header */
-		if (params.xflag)
+		if (params.xflag && tparams)
 			params.ep += tparams->header_size;
 	}
 
@@ -436,7 +437,7 @@ int main(int argc, char **argv)
 				params.cmdname, params.imagefile);
 			exit (EXIT_FAILURE);
 #endif
-		} else if (sbuf.st_size < (off_t)tparams->header_size) {
+		} else if (tparams && sbuf.st_size < (off_t)tparams->header_size) {
 			fprintf (stderr,
 				"%s: Bad size: \"%s\" is not valid image: size %llu < %u\n",
 				params.cmdname, params.imagefile,
@@ -455,21 +456,12 @@ int main(int argc, char **argv)
 			exit (EXIT_FAILURE);
 		}
 
-		if (params.fflag) {
-			/*
-			 * Verifies the header format based on the expected header for image
-			 * type in tparams
-			 */
-			retval = imagetool_verify_print_header_by_type(ptr, &sbuf,
-					tparams, &params);
-		} else {
-			/**
-			 * When listing the image, we are not given the image type. Simply check all
-			 * image types to find one that matches our header
-			 */
-			retval = imagetool_verify_print_header(ptr, &sbuf,
-					tparams, &params);
-		}
+		/*
+		 * Verifies the header format based on the expected header for image
+		 * type in tparams. If tparams is NULL simply check all image types
+		 * to find one that matches our header.
+		 */
+		retval = imagetool_verify_print_header(ptr, &sbuf, tparams, &params);
 
 		(void) munmap((void *)ptr, sbuf.st_size);
 		(void) close (ifd);