1 files changed, 143 insertions, 0 deletions
diff --git a/include/asm-ppc/prom.h b/include/asm-ppc/prom.h
new file mode 100644
index 000000000000..56394c6cf52e
--- /dev/null
+++ b/include/asm-ppc/prom.h
@@ -0,0 +1,143 @@
+/*
+ * Definitions for talking to the Open Firmware PROM on
+ * Power Macintosh computers.
+ *
+ * Copyright (C) 1996 Paul Mackerras.
+ */
+#ifdef __KERNEL__
+#ifndef _PPC_PROM_H
+#define _PPC_PROM_H
+
+#include <linux/config.h>
+#include <linux/types.h>
+
+typedef u32 phandle;
+typedef u32 ihandle;
+
+extern char *prom_display_paths[];
+extern unsigned int prom_num_displays;
+
+struct address_range {
+	unsigned int space;
+	unsigned int address;
+	unsigned int size;
+};
+
+struct interrupt_info {
+	int	line;
+	int	sense;		/* +ve/-ve logic, edge or level, etc. */
+};
+
+struct reg_property {
+	unsigned int address;
+	unsigned int size;
+};
+
+struct property {
+	char	*name;
+	int	length;
+	unsigned char *value;
+	struct property *next;
+};
+
+/*
+ * Note: don't change this structure for now or you'll break BootX !
+ */
+struct device_node {
+	char	*name;
+	char	*type;
+	phandle	node;
+	int	n_addrs;
+	struct	address_range *addrs;
+	int	n_intrs;
+	struct	interrupt_info *intrs;
+	char	*full_name;
+	struct	property *properties;
+	struct	device_node *parent;
+	struct	device_node *child;
+	struct	device_node *sibling;
+	struct	device_node *next;	/* next device of same type */
+	struct	device_node *allnext;	/* next in list of all nodes */
+};
+
+struct prom_args;
+typedef void (*prom_entry)(struct prom_args *);
+
+/* OBSOLETE: Old style node lookup */
+extern struct device_node *find_devices(const char *name);
+extern struct device_node *find_type_devices(const char *type);
+extern struct device_node *find_path_device(const char *path);
+extern struct device_node *find_compatible_devices(const char *type,
+						   const char *compat);
+extern struct device_node *find_all_nodes(void);
+
+/* New style node lookup */
+extern struct device_node *of_find_node_by_name(struct device_node *from,
+	const char *name);
+extern struct device_node *of_find_node_by_type(struct device_node *from,
+	const char *type);
+extern struct device_node *of_find_compatible_node(struct device_node *from,
+	const char *type, const char *compat);
+extern struct device_node *of_find_node_by_path(const char *path);
+extern struct device_node *of_find_all_nodes(struct device_node *prev);
+extern struct device_node *of_get_parent(const struct device_node *node);
+extern struct device_node *of_get_next_child(const struct device_node *node,
+					     struct device_node *prev);
+extern struct device_node *of_node_get(struct device_node *node);
+extern void of_node_put(struct device_node *node);
+
+/* Other Prototypes */
+extern void abort(void);
+extern unsigned long prom_init(int, int, prom_entry);
+extern void prom_print(const char *msg);
+extern void relocate_nodes(void);
+extern void finish_device_tree(void);
+extern int device_is_compatible(struct device_node *device, const char *);
+extern int machine_is_compatible(const char *compat);
+extern unsigned char *get_property(struct device_node *node, const char *name,
+				   int *lenp);
+extern void prom_add_property(struct device_node* np, struct property* prop);
+extern void prom_get_irq_senses(unsigned char *, int, int);
+extern int prom_n_addr_cells(struct device_node* np);
+extern int prom_n_size_cells(struct device_node* np);
+
+extern struct resource*
+request_OF_resource(struct device_node* node, int index, const char* name_postfix);
+extern int release_OF_resource(struct device_node* node, int index);
+
+extern void print_properties(struct device_node *node);
+extern int call_rtas(const char *service, int nargs, int nret,
+		     unsigned long *outputs, ...);
+
+/*
+ * PCI <-> OF matching functions
+ */
+struct pci_bus;
+struct pci_dev;
+extern int pci_device_from_OF_node(struct device_node *node,
+				   u8* bus, u8* devfn);
+extern struct device_node* pci_busdev_to_OF_node(struct pci_bus *, int);
+extern struct device_node* pci_device_to_OF_node(struct pci_dev *);
+extern void pci_create_OF_bus_map(void);
+
+/*
+ * When we call back to the Open Firmware client interface, we usually
+ * have to do that before the kernel is relocated to its final location
+ * (this is because we can't use OF after we have overwritten the
+ * exception vectors with our exception handlers).  These macros assist
+ * in performing the address calculations that we need to do to access
+ * data when the kernel is running at an address that is different from
+ * the address that the kernel is linked at.  The reloc_offset() function
+ * returns the difference between these two addresses and the macros
+ * simplify the process of adding or subtracting this offset to/from
+ * pointer values.  See arch/ppc/kernel/prom.c for how these are used.
+ */
+extern unsigned long reloc_offset(void);
+extern unsigned long add_reloc_offset(unsigned long);
+extern unsigned long sub_reloc_offset(unsigned long);
+
+#define PTRRELOC(x)	((typeof(x))add_reloc_offset((unsigned long)(x)))
+#define PTRUNRELOC(x)	((typeof(x))sub_reloc_offset((unsigned long)(x)))
+
+#endif /* _PPC_PROM_H */
+#endif /* __KERNEL__ */