commit eddd72916c7b4a26e47b84912c93b538ea85e72b
author Simon Glass <sjg@chromium.org> Fri Sep 14 04:57:13 2018 -0600
committer Simon Glass <sjg@chromium.org> Fri Sep 28 11:09:01 2018 -0600
tree 63d4ca476dd70999fbbe25d749d2e5165ff4b919
parent 3b376c315c6097e4bf09cc8eb4a45f9fec14d56d

dtoc: Allow syncing of the device tree back to a file

At present we require the caller to manually update the device tree using
individual calls to libfdt functions. This is not ideal. It would be
better if we could make changes using the Python structure and then call a
Sync() function to write them back.

Add this feature to the Fdt class. Update binman and the tests to match.

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

tools/binman/control.py

diff --git a/tools/binman/control.py b/tools/binman/control.py
index 8c48008..ded1b71 100644
--- a/tools/binman/control.py
+++ b/tools/binman/control.py
@@ -183,6 +183,7 @@
                     image.AddMissingProperties()
                 image.ProcessFdt(dtb)
 
+            dtb.Sync(auto_resize=True)
             dtb.Pack()
             dtb.Flush()
 
@@ -199,6 +200,7 @@
                 image.SetImagePos()
                 if options.update_fdt:
                     image.SetCalculatedProperties()
+                    dtb.Sync()
                 image.ProcessEntryContents()
                 image.WriteSymbols()
                 image.BuildImage()