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-rw-r--r--include/linux/of.h103
-rw-r--r--include/linux/of_fdt.h86
2 files changed, 189 insertions, 0 deletions
diff --git a/include/linux/of.h b/include/linux/of.h
index 7be2d1043c16..e7facd8fbce8 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -17,14 +17,117 @@
17 */ 17 */
18#include <linux/types.h> 18#include <linux/types.h>
19#include <linux/bitops.h> 19#include <linux/bitops.h>
20#include <linux/kref.h>
20#include <linux/mod_devicetable.h> 21#include <linux/mod_devicetable.h>
21 22
23typedef u32 phandle;
24typedef u32 ihandle;
25
26struct property {
27 char *name;
28 int length;
29 void *value;
30 struct property *next;
31 unsigned long _flags;
32 unsigned int unique_id;
33};
34
35#if defined(CONFIG_SPARC)
36struct of_irq_controller;
37#endif
38
39struct device_node {
40 const char *name;
41 const char *type;
42 phandle node;
43#if !defined(CONFIG_SPARC)
44 phandle linux_phandle;
45#endif
46 char *full_name;
47
48 struct property *properties;
49 struct property *deadprops; /* removed properties */
50 struct device_node *parent;
51 struct device_node *child;
52 struct device_node *sibling;
53 struct device_node *next; /* next device of same type */
54 struct device_node *allnext; /* next in list of all nodes */
55 struct proc_dir_entry *pde; /* this node's proc directory */
56 struct kref kref;
57 unsigned long _flags;
58 void *data;
59#if defined(CONFIG_SPARC)
60 char *path_component_name;
61 unsigned int unique_id;
62 struct of_irq_controller *irq_trans;
63#endif
64};
65
66static inline int of_node_check_flag(struct device_node *n, unsigned long flag)
67{
68 return test_bit(flag, &n->_flags);
69}
70
71static inline void of_node_set_flag(struct device_node *n, unsigned long flag)
72{
73 set_bit(flag, &n->_flags);
74}
75
76static inline void
77set_node_proc_entry(struct device_node *dn, struct proc_dir_entry *de)
78{
79 dn->pde = de;
80}
81
82extern struct device_node *of_find_all_nodes(struct device_node *prev);
83
84#if defined(CONFIG_SPARC)
85/* Dummy ref counting routines - to be implemented later */
86static inline struct device_node *of_node_get(struct device_node *node)
87{
88 return node;
89}
90static inline void of_node_put(struct device_node *node)
91{
92}
93
94#else
95extern struct device_node *of_node_get(struct device_node *node);
96extern void of_node_put(struct device_node *node);
97#endif
98
99/*
100 * OF address retreival & translation
101 */
102
103/* Helper to read a big number; size is in cells (not bytes) */
104static inline u64 of_read_number(const u32 *cell, int size)
105{
106 u64 r = 0;
107 while (size--)
108 r = (r << 32) | *(cell++);
109 return r;
110}
111
112/* Like of_read_number, but we want an unsigned long result */
113#ifdef CONFIG_PPC32
114static inline unsigned long of_read_ulong(const u32 *cell, int size)
115{
116 return cell[size-1];
117}
118#else
119#define of_read_ulong(cell, size) of_read_number(cell, size)
120#endif
121
22#include <asm/prom.h> 122#include <asm/prom.h>
23 123
24/* flag descriptions */ 124/* flag descriptions */
25#define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */ 125#define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */
26#define OF_DETACHED 2 /* node has been detached from the device tree */ 126#define OF_DETACHED 2 /* node has been detached from the device tree */
27 127
128#define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags)
129#define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags)
130
28#define OF_BAD_ADDR ((u64)-1) 131#define OF_BAD_ADDR ((u64)-1)
29 132
30extern struct device_node *of_find_node_by_name(struct device_node *from, 133extern struct device_node *of_find_node_by_name(struct device_node *from,
diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h
new file mode 100644
index 000000000000..41d432b13553
--- /dev/null
+++ b/include/linux/of_fdt.h
@@ -0,0 +1,86 @@
1/*
2 * Definitions for working with the Flattened Device Tree data format
3 *
4 * Copyright 2009 Benjamin Herrenschmidt, IBM Corp
5 * benh@kernel.crashing.org
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * version 2 as published by the Free Software Foundation.
10 */
11
12#ifndef _LINUX_OF_FDT_H
13#define _LINUX_OF_FDT_H
14
15#include <linux/types.h>
16#include <linux/init.h>
17
18/* Definitions used by the flattened device tree */
19#define OF_DT_HEADER 0xd00dfeed /* marker */
20#define OF_DT_BEGIN_NODE 0x1 /* Start of node, full name */
21#define OF_DT_END_NODE 0x2 /* End node */
22#define OF_DT_PROP 0x3 /* Property: name off, size,
23 * content */
24#define OF_DT_NOP 0x4 /* nop */
25#define OF_DT_END 0x9
26
27#define OF_DT_VERSION 0x10
28
29#ifndef __ASSEMBLY__
30/*
31 * This is what gets passed to the kernel by prom_init or kexec
32 *
33 * The dt struct contains the device tree structure, full pathes and
34 * property contents. The dt strings contain a separate block with just
35 * the strings for the property names, and is fully page aligned and
36 * self contained in a page, so that it can be kept around by the kernel,
37 * each property name appears only once in this page (cheap compression)
38 *
39 * the mem_rsvmap contains a map of reserved ranges of physical memory,
40 * passing it here instead of in the device-tree itself greatly simplifies
41 * the job of everybody. It's just a list of u64 pairs (base/size) that
42 * ends when size is 0
43 */
44struct boot_param_header {
45 u32 magic; /* magic word OF_DT_HEADER */
46 u32 totalsize; /* total size of DT block */
47 u32 off_dt_struct; /* offset to structure */
48 u32 off_dt_strings; /* offset to strings */
49 u32 off_mem_rsvmap; /* offset to memory reserve map */
50 u32 version; /* format version */
51 u32 last_comp_version; /* last compatible version */
52 /* version 2 fields below */
53 u32 boot_cpuid_phys; /* Physical CPU id we're booting on */
54 /* version 3 fields below */
55 u32 dt_strings_size; /* size of the DT strings block */
56 /* version 17 fields below */
57 u32 dt_struct_size; /* size of the DT structure block */
58};
59
60/* For scanning the flat device-tree at boot time */
61extern int __init of_scan_flat_dt(int (*it)(unsigned long node,
62 const char *uname, int depth,
63 void *data),
64 void *data);
65extern void __init *of_get_flat_dt_prop(unsigned long node, const char *name,
66 unsigned long *size);
67extern int __init of_flat_dt_is_compatible(unsigned long node,
68 const char *name);
69extern unsigned long __init of_get_flat_dt_root(void);
70
71/* Other Prototypes */
72extern void finish_device_tree(void);
73extern void unflatten_device_tree(void);
74extern void early_init_devtree(void *);
75extern int machine_is_compatible(const char *compat);
76extern void print_properties(struct device_node *node);
77extern int prom_n_intr_cells(struct device_node* np);
78extern void prom_get_irq_senses(unsigned char *senses, int off, int max);
79extern int prom_add_property(struct device_node* np, struct property* prop);
80extern int prom_remove_property(struct device_node *np, struct property *prop);
81extern int prom_update_property(struct device_node *np,
82 struct property *newprop,
83 struct property *oldprop);
84
85#endif /* __ASSEMBLY__ */
86#endif /* _LINUX_OF_FDT_H */
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