binman: Adjust Entry to read the node in a separate call

At present the Entry constructor sets up the object and then immediately
reads its device-tree node to obtain its properties.

This breaks a convention that constructors should not do any processing.
A consequence is that we must pass all arguments to the constructor and
cannot have the node-reading proceed in a different way unless we pass
flags to that constructor. We already have a 'test' flag in a few cases,
and now need to control whether the 'orig_offset' and 'orig_size'
properties are set or not.

Adjust the code to require a separate call to ReadNode() after
construction. The Image class remains as it was.

Signed-off-by: Simon Glass <sjg@chromium.org>

5 files changed, 23 insertions, 14 deletions

diff --git a/tools/binman/etype/_testing.py b/tools/binman/etype/_testing.py
index ae24fe8105..4a2e4eb7ca 100644
--- a/tools/binman/etype/_testing.py
+++ b/tools/binman/etype/_testing.py
@@ -42,6 +42,9 @@ class Entry__testing(Entry):
     """
     def __init__(self, section, etype, node):
         Entry.__init__(self, section, etype, node)
+
+    def ReadNode(self):
+        Entry.ReadNode(self)
         self.return_invalid_entry = fdt_util.GetBool(self._node,
                                                      'return-invalid-entry')
         self.return_unknown_contents = fdt_util.GetBool(self._node,
diff --git a/tools/binman/etype/cbfs.py b/tools/binman/etype/cbfs.py
index edf2189fd2..d73c706c44 100644
--- a/tools/binman/etype/cbfs.py
+++ b/tools/binman/etype/cbfs.py
@@ -203,6 +203,7 @@ class Entry_cbfs(Entry):
         """Read the subnodes to find out what should go in this IFWI"""
         for node in self._node.subnodes:
             entry = Entry.Create(self.section, node)
+            entry.ReadNode()
             entry._cbfs_name = fdt_util.GetString(node, 'cbfs-name', entry.name)
             entry._type = fdt_util.GetString(node, 'cbfs-type')
             compress = fdt_util.GetString(node, 'cbfs-compress', 'none')
diff --git a/tools/binman/etype/fill.py b/tools/binman/etype/fill.py
index 68efe42ec0..623b7f4e95 100644
--- a/tools/binman/etype/fill.py
+++ b/tools/binman/etype/fill.py
@@ -23,6 +23,9 @@ class Entry_fill(Entry):
     """
     def __init__(self, section, etype, node):
         Entry.__init__(self, section, etype, node)
+
+    def ReadNode(self):
+        Entry.ReadNode(self)
         if self.size is None:
             self.Raise("'fill' entry must have a size property")
         self.fill_value = fdt_util.GetByte(self._node, 'fill-byte', 0)
diff --git a/tools/binman/etype/intel_ifwi.py b/tools/binman/etype/intel_ifwi.py
index 8c79b2dd29..9cbdf3698a 100644
--- a/tools/binman/etype/intel_ifwi.py
+++ b/tools/binman/etype/intel_ifwi.py
@@ -94,6 +94,7 @@ class Entry_intel_ifwi(Entry_blob):
         """Read the subnodes to find out what should go in this IFWI"""
         for node in self._node.subnodes:
             entry = Entry.Create(self.section, node)
+            entry.ReadNode()
             entry._ifwi_replace = fdt_util.GetBool(node, 'replace')
             entry._ifwi_subpart = fdt_util.GetString(node, 'ifwi-subpart')
             entry._ifwi_entry_name = fdt_util.GetString(node, 'ifwi-entry')
diff --git a/tools/binman/etype/section.py b/tools/binman/etype/section.py
index cd623821a3..c875a79f1f 100644
--- a/tools/binman/etype/section.py
+++ b/tools/binman/etype/section.py
@@ -52,22 +52,10 @@ class Entry_section(Entry):
         self._sort = False
         self._skip_at_start = None
         self._end_4gb = False
-        if not test:
-            self._ReadNode()
-            self._ReadEntries()
-
-    def _Raise(self, msg):
-        """Raises an error for this section
-
-        Args:
-            msg: Error message to use in the raise string
-        Raises:
-            ValueError()
-        """
-        raise ValueError("Section '%s': %s" % (self._node.path, msg))
 
-    def _ReadNode(self):
+    def ReadNode(self):
         """Read properties from the image node"""
+        Entry.ReadNode(self)
         self._pad_byte = fdt_util.GetInt(self._node, 'pad-byte', 0)
         self._sort = fdt_util.GetBool(self._node, 'sort-by-offset')
         self._end_4gb = fdt_util.GetBool(self._node, 'end-at-4gb')
@@ -87,14 +75,27 @@ class Entry_section(Entry):
         if filename:
             self._filename = filename
 
+        self._ReadEntries()
+
     def _ReadEntries(self):
         for node in self._node.subnodes:
             if node.name == 'hash':
                 continue
             entry = Entry.Create(self, node)
+            entry.ReadNode()
             entry.SetPrefix(self._name_prefix)
             self._entries[node.name] = entry
 
+    def _Raise(self, msg):
+        """Raises an error for this section
+
+        Args:
+            msg: Error message to use in the raise string
+        Raises:
+            ValueError()
+        """
+        raise ValueError("Section '%s': %s" % (self._node.path, msg))
+
     def GetFdts(self):
         fdts = {}
         for entry in self._entries.values():