1 files changed, 67 insertions, 0 deletions
diff --git a/include/of_live.h b/include/of_live.h
new file mode 100644
index 00000000000..67bd5f02c74
--- /dev/null
+++ b/include/of_live.h
@@ -0,0 +1,67 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) 2017 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ *
+ * Support for a 'live' (as opposed to flat) device tree
+ */
+
+#ifndef _OF_LIVE_H
+#define _OF_LIVE_H
+
+struct abuf;
+struct device_node;
+
+/**
+ * of_live_build() - build a live (hierarchical) tree from a flat DT
+ *
+ * @fdt_blob: Input tree to convert
+ * @rootp: Returns live tree that was created
+ * Return: 0 if OK, -ve on error
+ */
+int of_live_build(const void *fdt_blob, struct device_node **rootp);
+
+/**
+ * unflatten_device_tree() - create tree of device_nodes from flat blob
+ *
+ * Note that this allocates a single block of memory, pointed to by *mynodes.
+ * To free the tree, use free(*mynodes)
+ *
+ * unflattens a device-tree, creating the
+ * tree of struct device_node. It also fills the "name" and "type"
+ * pointers of the nodes so the normal device-tree walking functions
+ * can be used.
+ * @blob: The blob to expand
+ * @mynodes: The device_node tree created by the call
+ * Return: 0 if OK, -ve on error
+ */
+int unflatten_device_tree(const void *blob, struct device_node **mynodes);
+
+/**
+ * of_live_free() - Dispose of a livetree
+ *
+ * This frees memory used by the tree, after which @root becomes invalid and
+ * cannot be used
+ *
+ * @root: Tree to dispose
+ */
+void of_live_free(struct device_node *root);
+
+/**
+ * of_live_create_empty() - Create a new, empty tree
+ *
+ * @rootp: Returns the root node of the created tree
+ * Return: 0 if OK, -ENOMEM if out of memory
+ */
+int of_live_create_empty(struct device_node **rootp);
+
+/**
+ * of_live_flatten() - Create an FDT from a hierarchical tree
+ *
+ * @root: Root node of tree to convert
+ * @buf: Buffer to return the tree (inited by this function)
+ * Return: 0 if OK, -ENOMEM if out of memory
+ */
+int of_live_flatten(const struct device_node *root, struct abuf *buf);
+
+#endif