From 08723a7abbc7e28b22d18684faf5142fc6f155e8 Mon Sep 17 00:00:00 2001
From: Simon Glass <sjg@chromium.org>
Date: Fri, 14 Sep 2018 04:57:33 -0600
Subject: [PATCH] binman: Record the parent section of each section

At present sections have no record of their parent so it is not possible
to traverse up the tree to the root and figure out the position of a
section within the image.

Change the constructor to record this information.

Signed-off-by: Simon Glass <sjg@chromium.org>
---
 tools/binman/bsection.py      | 5 ++++-
 tools/binman/etype/section.py | 3 ++-
 tools/binman/image.py         | 5 +++--
 3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/tools/binman/bsection.py b/tools/binman/bsection.py
index 650e9ba..e4c1900 100644
--- a/tools/binman/bsection.py
+++ b/tools/binman/bsection.py
@@ -24,6 +24,7 @@ class Section(object):
 
     Attributes:
         _node: Node object that contains the section definition in device tree
+        _parent_section: Parent Section object which created this Section
         _size: Section size in bytes, or None if not known yet
         _align_size: Section size alignment, or None
         _pad_before: Number of bytes before the first entry starts. This
@@ -46,14 +47,16 @@ class Section(object):
             section
         _entries: OrderedDict() of entries
     """
-    def __init__(self, name, node, test=False):
+    def __init__(self, name, parent_section, node, image, test=False):
         global entry
         global Entry
         import entry
         from entry import Entry
 
+        self._parent_section = parent_section
         self._name = name
         self._node = node
+        self._image = image
         self._offset = 0
         self._size = None
         self._align_size = None
diff --git a/tools/binman/etype/section.py b/tools/binman/etype/section.py
index 005a9f9..7f1b413 100644
--- a/tools/binman/etype/section.py
+++ b/tools/binman/etype/section.py
@@ -32,7 +32,8 @@ class Entry_section(Entry):
     """
     def __init__(self, section, etype, node):
         Entry.__init__(self, section, etype, node)
-        self._section = bsection.Section(node.name, node)
+        self._section = bsection.Section(node.name, section, node,
+                                         section._image)
 
     def GetFdtSet(self):
         return self._section.GetFdtSet()
diff --git a/tools/binman/image.py b/tools/binman/image.py
index 4b922b5..e113a60 100644
--- a/tools/binman/image.py
+++ b/tools/binman/image.py
@@ -42,7 +42,8 @@ class Image:
         self._size = None
         self._filename = '%s.bin' % self._name
         if test:
-            self._section = bsection.Section('main-section', self._node, True)
+            self._section = bsection.Section('main-section', None, self._node,
+                                             self, True)
         else:
             self._ReadNode()
 
@@ -52,7 +53,7 @@ class Image:
         filename = fdt_util.GetString(self._node, 'filename')
         if filename:
             self._filename = filename
-        self._section = bsection.Section('main-section', self._node)
+        self._section = bsection.Section('main-section', None, self._node, self)
 
     def GetFdtSet(self):
         """Get the set of device tree files used by this image"""