1 files changed, 45 insertions, 0 deletions

diff --git a/include/linux/of_pdt.h b/include/linux/of_pdt.h
new file mode 100644
index 000000000000..c65a18a0cfdf
--- /dev/null
+++ b/include/linux/of_pdt.h
@@ -0,0 +1,45 @@
+/*
+ * Definitions for building a device tree by calling into the
+ * Open Firmware PROM.
+ *
+ * Copyright (C) 2010  Andres Salomon <dilinger@queued.net>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _LINUX_OF_PDT_H
+#define _LINUX_OF_PDT_H
+
+/* overridable operations for calling into the PROM */
+struct of_pdt_ops {
+        /*
+         * buf should be 32 bytes; return 0 on success.
+         * If prev is NULL, the first property will be returned.
+         */
+        int (*nextprop)(phandle node, char *prev, char *buf);
+
+        /* for both functions, return proplen on success; -1 on error */
+        int (*getproplen)(phandle node, const char *prop);
+        int (*getproperty)(phandle node, const char *prop, char *buf,
+                        int bufsize);
+
+        /* phandles are 0 if no child or sibling exists */
+        phandle (*getchild)(phandle parent);
+        phandle (*getsibling)(phandle node);
+
+        /* return 0 on success; fill in 'len' with number of bytes in path */
+        int (*pkg2path)(phandle node, char *buf, const int buflen, int *len);
+};
+
+extern void *prom_early_alloc(unsigned long size);
+
+/* for building the device tree */
+extern void of_pdt_build_devicetree(phandle root_node, struct of_pdt_ops *ops);
+
+extern void (*of_pdt_build_more)(struct device_node *dp,
+                struct device_node ***nextp);
+
+#endif /* _LINUX_OF_PDT_H */