Initial import

1 files changed, 100 insertions, 0 deletions

diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h
new file mode 100644
index 000000000..587ee5079
--- /dev/null
+++ b/include/linux/of_fdt.h
@@ -0,0 +1,100 @@
+/*
+ * Definitions for working with the Flattened Device Tree data format
+ *
+ * Copyright 2009 Benjamin Herrenschmidt, IBM Corp
+ * benh@kernel.crashing.org
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ */
+
+#ifndef _LINUX_OF_FDT_H
+#define _LINUX_OF_FDT_H
+
+#include <linux/types.h>
+#include <linux/init.h>
+
+/* Definitions used by the flattened device tree */
+#define OF_DT_HEADER		0xd00dfeed	/* marker */
+
+#ifndef __ASSEMBLY__
+
+#if defined(CONFIG_OF_FLATTREE)
+
+struct device_node;
+
+/* For scanning an arbitrary device-tree at any time */
+extern char *of_fdt_get_string(const void *blob, u32 offset);
+extern void *of_fdt_get_property(const void *blob,
+				 unsigned long node,
+				 const char *name,
+				 int *size);
+extern int of_fdt_is_compatible(const void *blob,
+				unsigned long node,
+				const char *compat);
+extern bool of_fdt_is_big_endian(const void *blob,
+				 unsigned long node);
+extern int of_fdt_match(const void *blob, unsigned long node,
+			const char *const *compat);
+extern void of_fdt_unflatten_tree(unsigned long *blob,
+			       struct device_node **mynodes);
+
+/* TBD: Temporary export of fdt globals - remove when code fully merged */
+extern int __initdata dt_root_addr_cells;
+extern int __initdata dt_root_size_cells;
+extern void *initial_boot_params;
+
+extern char __dtb_start[];
+extern char __dtb_end[];
+
+/* For scanning the flat device-tree at boot time */
+extern int of_scan_flat_dt(int (*it)(unsigned long node, const char *uname,
+				     int depth, void *data),
+			   void *data);
+extern const void *of_get_flat_dt_prop(unsigned long node, const char *name,
+				       int *size);
+extern int of_flat_dt_is_compatible(unsigned long node, const char *name);
+extern int of_flat_dt_match(unsigned long node, const char *const *matches);
+extern unsigned long of_get_flat_dt_root(void);
+extern int of_get_flat_dt_size(void);
+
+extern int early_init_dt_scan_chosen(unsigned long node, const char *uname,
+				     int depth, void *data);
+extern int early_init_dt_scan_memory(unsigned long node, const char *uname,
+				     int depth, void *data);
+extern void early_init_fdt_scan_reserved_mem(void);
+extern void early_init_dt_add_memory_arch(u64 base, u64 size);
+extern int early_init_dt_reserve_memory_arch(phys_addr_t base, phys_addr_t size,
+					     bool no_map);
+extern void * early_init_dt_alloc_memory_arch(u64 size, u64 align);
+extern u64 dt_mem_next_cell(int s, const __be32 **cellp);
+
+/* Early flat tree scan hooks */
+extern int early_init_dt_scan_root(unsigned long node, const char *uname,
+				   int depth, void *data);
+
+extern bool early_init_dt_scan(void *params);
+extern bool early_init_dt_verify(void *params);
+extern void early_init_dt_scan_nodes(void);
+
+extern const char *of_flat_dt_get_machine_name(void);
+extern const void *of_flat_dt_match_machine(const void *default_match,
+		const void * (*get_next_compat)(const char * const**));
+
+/* Other Prototypes */
+extern void unflatten_device_tree(void);
+extern void unflatten_and_copy_device_tree(void);
+extern void early_init_devtree(void *);
+extern void early_get_first_memblock_info(void *, phys_addr_t *);
+extern u64 fdt_translate_address(const void *blob, int node_offset);
+extern void of_fdt_limit_memory(int limit);
+#else /* CONFIG_OF_FLATTREE */
+static inline void early_init_fdt_scan_reserved_mem(void) {}
+static inline const char *of_flat_dt_get_machine_name(void) { return NULL; }
+static inline void unflatten_device_tree(void) {}
+static inline void unflatten_and_copy_device_tree(void) {}
+#endif /* CONFIG_OF_FLATTREE */
+
+#endif /* __ASSEMBLY__ */
+#endif /* _LINUX_OF_FDT_H */