diff --git a/include/asm-powerpc/lmb.h b/include/asm-powerpc/lmb.h
new file mode 100644
index 0000000..ea0afe3
--- /dev/null
+++ b/include/asm-powerpc/lmb.h
@@ -0,0 +1,81 @@
+#ifndef _PPC64_LMB_H
+#define _PPC64_LMB_H
+
+/*
+ * Definitions for talking to the Open Firmware PROM on
+ * Power Macintosh computers.
+ *
+ * Copyright (C) 2001 Peter Bergner, IBM Corp.
+ *
+ * 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.
+ */
+
+#include <linux/init.h>
+#include <asm/prom.h>
+
+#define MAX_LMB_REGIONS 128
+
+#define LMB_ALLOC_ANYWHERE	0
+
+struct lmb_property {
+	unsigned long base;
+	unsigned long size;
+};
+
+struct lmb_region {
+	unsigned long cnt;
+	unsigned long size;
+	struct lmb_property region[MAX_LMB_REGIONS+1];
+};
+
+struct lmb {
+	unsigned long debug;
+	unsigned long rmo_size;
+	struct lmb_region memory;
+	struct lmb_region reserved;
+};
+
+extern struct lmb lmb;
+
+extern void __init lmb_init(void);
+extern void __init lmb_analyze(void);
+extern long __init lmb_add(unsigned long, unsigned long);
+extern long __init lmb_reserve(unsigned long, unsigned long);
+extern unsigned long __init lmb_alloc(unsigned long, unsigned long);
+extern unsigned long __init lmb_alloc_base(unsigned long, unsigned long,
+					   unsigned long);
+extern unsigned long __init lmb_phys_mem_size(void);
+extern unsigned long __init lmb_end_of_DRAM(void);
+extern unsigned long __init lmb_abs_to_phys(unsigned long);
+extern void __init lmb_enforce_memory_limit(unsigned long);
+
+extern void lmb_dump_all(void);
+
+extern unsigned long io_hole_start;
+
+static inline unsigned long
+lmb_size_bytes(struct lmb_region *type, unsigned long region_nr)
+{
+	return type->region[region_nr].size;
+}
+static inline unsigned long
+lmb_size_pages(struct lmb_region *type, unsigned long region_nr)
+{
+	return lmb_size_bytes(type, region_nr) >> PAGE_SHIFT;
+}
+static inline unsigned long
+lmb_start_pfn(struct lmb_region *type, unsigned long region_nr)
+{
+	return type->region[region_nr].base >> PAGE_SHIFT;
+}
+static inline unsigned long
+lmb_end_pfn(struct lmb_region *type, unsigned long region_nr)
+{
+	return lmb_start_pfn(type, region_nr) +
+	       lmb_size_pages(type, region_nr);
+}
+
+#endif /* _PPC64_LMB_H */