imgtool: Add support for hex files in dumpinfo and tests

Signed-off-by: Rustam Ismayilov <rustam.ismayilov@arm.com>
Change-Id: I37b54000955f30f87aff8f23a1ea71804bf967cd

Author: rustammendel

scripts/imgtool/dumpinfo.py

@@ -23,8 +23,10 @@
 
 import click
 import yaml
+from intelhex import IntelHex
 
 from imgtool import image
+from imgtool.image import INTEL_HEX_EXT
 
 HEADER_ITEMS = ("magic", "load_addr", "hdr_size", "protected_tlv_size",
                 "img_size", "flags", "version")
@@ -129,9 +131,14 @@ def dump_imginfo(imgfile, outfile=None, silent=False):
     trailer = {}
     key_field_len = None
 
+    ext = os.path.splitext(imgfile)[1][1:].lower()
     try:
-        with open(imgfile, "rb") as f:
-            b = f.read()
+        if ext == INTEL_HEX_EXT:
+            ih = IntelHex(imgfile)
+            b = ih.tobinstr()
+        else:
+            with open(imgfile, "rb") as f:
+                b = f.read()
     except FileNotFoundError:
         raise click.UsageError("Image file not found ({})".format(imgfile))
 

scripts/tests/test_dumpinfo.py

@@ -326,3 +326,12 @@ def test_dumpinfo_padded_multiflag(self, tmp_path_persistent, key_type):
         assert "ROM_FIXED" in result.stdout
         assert DUMPINFO_SUCCESS_LITERAL in result.stdout
         assert DUMPINFO_ENCRYPTED_TRAILER in result.stdout
+
+    @pytest.mark.parametrize("hex_addr", ("0", "16", "35"))
+    def test_dumpinfo_hex(self, tmp_path_persistent, hex_addr):
+        self.image_signed = signed_images_dir + "/hex/" + f"zero_hex-addr_{hex_addr}" + ".hex"
+        result = self.runner.invoke(
+            imgtool, ["dumpinfo", str(self.image_signed)]
+        )
+        assert result.exit_code == 0
+        assert DUMPINFO_SUCCESS_LITERAL in result.stdout