diff --git a/include/lmb.h b/include/lmb.h
index 541e170..e900b3d 100644
--- a/include/lmb.h
+++ b/include/lmb.h
@@ -13,6 +13,16 @@
  */
 
 /**
+ * enum lmb_flags - definition of memory region attributes
+ * @LMB_NONE: no special request
+ * @LMB_NOMAP: don't add to mmu configuration
+ */
+enum lmb_flags {
+	LMB_NONE		= 0x0,
+	LMB_NOMAP		= 0x4,
+};
+
+/**
  * struct lmb_property - Description of one region.
  *
  * @base: Base address of the region.
@@ -21,6 +31,7 @@
 struct lmb_property {
 	phys_addr_t base;
 	phys_size_t size;
+	enum lmb_flags flags;
 };
 
 /**
@@ -69,6 +80,17 @@
 				       phys_size_t size, void *fdt_blob);
 extern long lmb_add(struct lmb *lmb, phys_addr_t base, phys_size_t size);
 extern long lmb_reserve(struct lmb *lmb, phys_addr_t base, phys_size_t size);
+/**
+ * lmb_reserve_flags - Reserve one region with a specific flags bitfield.
+ *
+ * @lmb		the logical memory block struct
+ * @base	base address of the memory region
+ * @size	size of the memory region
+ * @flags	flags for the memory region
+ * @return 0 if OK, > 0 for coalesced region or a negative error code.
+ */
+long lmb_reserve_flags(struct lmb *lmb, phys_addr_t base,
+		       phys_size_t size, enum lmb_flags flags);
 extern phys_addr_t lmb_alloc(struct lmb *lmb, phys_size_t size, ulong align);
 extern phys_addr_t lmb_alloc_base(struct lmb *lmb, phys_size_t size, ulong align,
 			    phys_addr_t max_addr);
@@ -92,6 +114,13 @@
 void board_lmb_reserve(struct lmb *lmb);
 void arch_lmb_reserve(struct lmb *lmb);
 
+/* Low level functions */
+
+static inline bool lmb_is_nomap(struct lmb_property *m)
+{
+	return m->flags & LMB_NOMAP;
+}
+
 #endif /* __KERNEL__ */
 
 #endif /* _LINUX_LMB_H */