binman: Show an error when a file is missing

The recent support for missing external binaries does not show an error
message when a file is genuinely missing (i.e. it is missing but not
marked as 'external'). This means that when -m is passed to binman, it
will never report a missing file.

Fix this and add a test.

Signed-off-by: Simon Glass <[email protected]>
Acked-by: Andy Shevchenko <[email protected]>

1 files changed, 14 insertions, 0 deletions

diff --git a/tools/binman/test/173_missing_blob.dts b/tools/binman/test/173_missing_blob.dts
new file mode 100644
index 00000000000..ffb655a1cb4
--- /dev/null
+++ b/tools/binman/test/173_missing_blob.dts
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/dts-v1/;
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	binman {
+		blob {
+			filename = "missing";
+		};
+	};
+};