1 files changed, 53 insertions, 0 deletions

diff --git a/include/linux/of_reserved_mem.h b/include/linux/of_reserved_mem.h
new file mode 100644
index 000000000000..9b1fbb7f29fc
--- /dev/null
+++ b/include/linux/of_reserved_mem.h
@@ -0,0 +1,53 @@
+#ifndef __OF_RESERVED_MEM_H
+#define __OF_RESERVED_MEM_H
+
+struct device;
+struct of_phandle_args;
+struct reserved_mem_ops;
+
+struct reserved_mem {
+        const char                      *name;
+        unsigned long                   fdt_node;
+        const struct reserved_mem_ops   *ops;
+        phys_addr_t                     base;
+        phys_addr_t                     size;
+        void                            *priv;
+};
+
+struct reserved_mem_ops {
+        void    (*device_init)(struct reserved_mem *rmem,
+                               struct device *dev);
+        void    (*device_release)(struct reserved_mem *rmem,
+                                  struct device *dev);
+};
+
+typedef int (*reservedmem_of_init_fn)(struct reserved_mem *rmem,
+                                      unsigned long node, const char *uname);
+
+#ifdef CONFIG_OF_RESERVED_MEM
+void fdt_init_reserved_mem(void);
+void fdt_reserved_mem_save_node(unsigned long node, const char *uname,
+                               phys_addr_t base, phys_addr_t size);
+
+#define RESERVEDMEM_OF_DECLARE(name, compat, init)                      \
+        static const struct of_device_id __reservedmem_of_table_##name  \
+                __used __section(__reservedmem_of_table)                \
+                 = { .compatible = compat,                              \
+                     .data = (init == (reservedmem_of_init_fn)NULL) ?   \
+                                init : init }
+
+#else
+static inline void fdt_init_reserved_mem(void) { }
+static inline void fdt_reserved_mem_save_node(unsigned long node,
+                const char *uname, phys_addr_t base, phys_addr_t size) { }
+
+#define RESERVEDMEM_OF_DECLARE(name, compat, init)                      \
+        static const struct of_device_id __reservedmem_of_table_##name  \
+                __attribute__((unused))                                 \
+                 = { .compatible = compat,                              \
+                     .data = (init == (reservedmem_of_init_fn)NULL) ?   \
+                                init : init }
+
+#endif
+
+#endif /* __OF_RESERVED_MEM_H */