tools: binman: control.py: Delete template nodes after parsing

Dynamically going through the subnode array and deleting leads to
templates being skipped from deletion when templates are consecutive in
the subnode list. Prevent this from happening by first parsing the DT
and then deleting the nodes. Add a testcase as well for this cornercase.

Signed-off-by: Neha Malcom Francis <n-francis@ti.com>

tools/binman/control.py

@@ -522,8 +522,12 @@ def _ProcessTemplates(parent):
 def _RemoveTemplates(parent):
     """Remove any templates in the binman description
     """
+    del_nodes = []
     for node in parent.subnodes:
         if node.name.startswith('template'):
+            del_nodes.append(node)
+
+    for node in del_nodes:
         node.Delete()
 
 def PrepareImagesAndDtbs(dtb_fname, select_images, update_fdt, use_expanded, indir):

tools/binman/ftest.py

@@ -7990,5 +7990,12 @@ fdt         fdtmap                Extract the devicetree blob from the fdtmap
         """Test an image with an FIT with multiple FDT images using NAME"""
         self.CheckFitFdt('345_fit_fdt_name.dts', use_seq_num=False)
 
+    def testRemoveTemplate(self):
+        """Test whether template is removed"""
+        TestFunctional._MakeInputFile('my-blob.bin', b'blob')
+        TestFunctional._MakeInputFile('my-blob2.bin', b'other')
+        self._DoTestFile('346_remove_template.dts',
+                         force_missing_bintools='openssl',)
+
 if __name__ == "__main__":
     unittest.main()

tools/binman/test/346_remove_template.dts

@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/dts-v1/;
+/ {
+    binman: binman {
+		multiple-images;
+
+		template_1: template-1 {
+			section {
+				phandle1: my-blob.bin {
+					filename = "my-blob.bin";
+					type = "blob-ext";
+				};
+			};
+		};
+		template_2: template-2 {
+			section {
+				ti-secure {
+					content = <&phandle2>;
+					keyfile = "key.pem";
+				};
+				phandle2: my-blob.bin {
+					filename = "my-blob.bin";
+					type = "blob-ext";
+				};
+			};
+		};
+		template_3: template-3 {
+			section {
+				phandle3: my-blob.bin {
+					filename = "my-blob.bin";
+					type = "blob-ext";
+				};
+			};
+		};
+
+		file1 {
+			insert-template = <&template_1>;
+		};
+
+		file2 {
+			insert-template = <&template_2>;
+		};
+
+		file3 {
+			insert-template = <&template_3>;
+		};
+	};
+};