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-rw-r--r--include/linux/of.h62
-rw-r--r--include/linux/of_fdt.h75
2 files changed, 90 insertions, 47 deletions
diff --git a/include/linux/of.h b/include/linux/of.h
index e7facd8fbce8..f6d9cbc39c9c 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -19,6 +19,11 @@
19#include <linux/bitops.h> 19#include <linux/bitops.h>
20#include <linux/kref.h> 20#include <linux/kref.h>
21#include <linux/mod_devicetable.h> 21#include <linux/mod_devicetable.h>
22#include <linux/spinlock.h>
23
24#include <asm/byteorder.h>
25
26#ifdef CONFIG_OF
22 27
23typedef u32 phandle; 28typedef u32 phandle;
24typedef u32 ihandle; 29typedef u32 ihandle;
@@ -39,10 +44,7 @@ struct of_irq_controller;
39struct device_node { 44struct device_node {
40 const char *name; 45 const char *name;
41 const char *type; 46 const char *type;
42 phandle node; 47 phandle phandle;
43#if !defined(CONFIG_SPARC)
44 phandle linux_phandle;
45#endif
46 char *full_name; 48 char *full_name;
47 49
48 struct property *properties; 50 struct property *properties;
@@ -63,6 +65,11 @@ struct device_node {
63#endif 65#endif
64}; 66};
65 67
68/* Pointer for first entry in chain of all nodes. */
69extern struct device_node *allnodes;
70extern struct device_node *of_chosen;
71extern rwlock_t devtree_lock;
72
66static inline int of_node_check_flag(struct device_node *n, unsigned long flag) 73static inline int of_node_check_flag(struct device_node *n, unsigned long flag)
67{ 74{
68 return test_bit(flag, &n->_flags); 75 return test_bit(flag, &n->_flags);
@@ -73,12 +80,6 @@ static inline void of_node_set_flag(struct device_node *n, unsigned long flag)
73 set_bit(flag, &n->_flags); 80 set_bit(flag, &n->_flags);
74} 81}
75 82
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); 83extern struct device_node *of_find_all_nodes(struct device_node *prev);
83 84
84#if defined(CONFIG_SPARC) 85#if defined(CONFIG_SPARC)
@@ -101,26 +102,36 @@ extern void of_node_put(struct device_node *node);
101 */ 102 */
102 103
103/* Helper to read a big number; size is in cells (not bytes) */ 104/* Helper to read a big number; size is in cells (not bytes) */
104static inline u64 of_read_number(const u32 *cell, int size) 105static inline u64 of_read_number(const __be32 *cell, int size)
105{ 106{
106 u64 r = 0; 107 u64 r = 0;
107 while (size--) 108 while (size--)
108 r = (r << 32) | *(cell++); 109 r = (r << 32) | be32_to_cpu(*(cell++));
109 return r; 110 return r;
110} 111}
111 112
112/* Like of_read_number, but we want an unsigned long result */ 113/* Like of_read_number, but we want an unsigned long result */
113#ifdef CONFIG_PPC32 114static inline unsigned long of_read_ulong(const __be32 *cell, int size)
114static inline unsigned long of_read_ulong(const u32 *cell, int size)
115{ 115{
116 return cell[size-1]; 116 /* toss away upper bits if unsigned long is smaller than u64 */
117 return of_read_number(cell, size);
117} 118}
118#else
119#define of_read_ulong(cell, size) of_read_number(cell, size)
120#endif
121 119
122#include <asm/prom.h> 120#include <asm/prom.h>
123 121
122/* Default #address and #size cells. Allow arch asm/prom.h to override */
123#if !defined(OF_ROOT_NODE_ADDR_CELLS_DEFAULT)
124#define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 1
125#define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1
126#endif
127
128/* Default string compare functions, Allow arch asm/prom.h to override */
129#if !defined(of_compat_cmp)
130#define of_compat_cmp(s1, s2, l) strncasecmp((s1), (s2), (l))
131#define of_prop_cmp(s1, s2) strcmp((s1), (s2))
132#define of_node_cmp(s1, s2) strcasecmp((s1), (s2))
133#endif
134
124/* flag descriptions */ 135/* flag descriptions */
125#define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */ 136#define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */
126#define OF_DETACHED 2 /* node has been detached from the device tree */ 137#define OF_DETACHED 2 /* node has been detached from the device tree */
@@ -187,4 +198,19 @@ extern int of_parse_phandles_with_args(struct device_node *np,
187 const char *list_name, const char *cells_name, int index, 198 const char *list_name, const char *cells_name, int index,
188 struct device_node **out_node, const void **out_args); 199 struct device_node **out_node, const void **out_args);
189 200
201extern int of_machine_is_compatible(const char *compat);
202
203extern int prom_add_property(struct device_node* np, struct property* prop);
204extern int prom_remove_property(struct device_node *np, struct property *prop);
205extern int prom_update_property(struct device_node *np,
206 struct property *newprop,
207 struct property *oldprop);
208
209#if defined(CONFIG_OF_DYNAMIC)
210/* For updating the device tree at runtime */
211extern void of_attach_node(struct device_node *);
212extern void of_detach_node(struct device_node *);
213#endif
214
215#endif /* CONFIG_OF */
190#endif /* _LINUX_OF_H */ 216#endif /* _LINUX_OF_H */
diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h
index 41d432b13553..a1ca92ccb0ff 100644
--- a/include/linux/of_fdt.h
+++ b/include/linux/of_fdt.h
@@ -42,45 +42,62 @@
42 * ends when size is 0 42 * ends when size is 0
43 */ 43 */
44struct boot_param_header { 44struct boot_param_header {
45 u32 magic; /* magic word OF_DT_HEADER */ 45 __be32 magic; /* magic word OF_DT_HEADER */
46 u32 totalsize; /* total size of DT block */ 46 __be32 totalsize; /* total size of DT block */
47 u32 off_dt_struct; /* offset to structure */ 47 __be32 off_dt_struct; /* offset to structure */
48 u32 off_dt_strings; /* offset to strings */ 48 __be32 off_dt_strings; /* offset to strings */
49 u32 off_mem_rsvmap; /* offset to memory reserve map */ 49 __be32 off_mem_rsvmap; /* offset to memory reserve map */
50 u32 version; /* format version */ 50 __be32 version; /* format version */
51 u32 last_comp_version; /* last compatible version */ 51 __be32 last_comp_version; /* last compatible version */
52 /* version 2 fields below */ 52 /* version 2 fields below */
53 u32 boot_cpuid_phys; /* Physical CPU id we're booting on */ 53 __be32 boot_cpuid_phys; /* Physical CPU id we're booting on */
54 /* version 3 fields below */ 54 /* version 3 fields below */
55 u32 dt_strings_size; /* size of the DT strings block */ 55 __be32 dt_strings_size; /* size of the DT strings block */
56 /* version 17 fields below */ 56 /* version 17 fields below */
57 u32 dt_struct_size; /* size of the DT structure block */ 57 __be32 dt_struct_size; /* size of the DT structure block */
58}; 58};
59 59
60/* TBD: Temporary export of fdt globals - remove when code fully merged */
61extern int __initdata dt_root_addr_cells;
62extern int __initdata dt_root_size_cells;
63extern struct boot_param_header *initial_boot_params;
64
60/* For scanning the flat device-tree at boot time */ 65/* For scanning the flat device-tree at boot time */
61extern int __init of_scan_flat_dt(int (*it)(unsigned long node, 66extern char *find_flat_dt_string(u32 offset);
62 const char *uname, int depth, 67extern int of_scan_flat_dt(int (*it)(unsigned long node, const char *uname,
63 void *data), 68 int depth, void *data),
64 void *data); 69 void *data);
65extern void __init *of_get_flat_dt_prop(unsigned long node, const char *name, 70extern void *of_get_flat_dt_prop(unsigned long node, const char *name,
66 unsigned long *size); 71 unsigned long *size);
67extern int __init of_flat_dt_is_compatible(unsigned long node, 72extern int of_flat_dt_is_compatible(unsigned long node, const char *name);
68 const char *name); 73extern unsigned long of_get_flat_dt_root(void);
69extern unsigned long __init of_get_flat_dt_root(void); 74extern void early_init_dt_scan_chosen_arch(unsigned long node);
75extern int early_init_dt_scan_chosen(unsigned long node, const char *uname,
76 int depth, void *data);
77extern void early_init_dt_check_for_initrd(unsigned long node);
78extern int early_init_dt_scan_memory(unsigned long node, const char *uname,
79 int depth, void *data);
80extern void early_init_dt_add_memory_arch(u64 base, u64 size);
81extern u64 early_init_dt_alloc_memory_arch(u64 size, u64 align);
82extern u64 dt_mem_next_cell(int s, __be32 **cellp);
83
84/*
85 * If BLK_DEV_INITRD, the fdt early init code will call this function,
86 * to be provided by the arch code. start and end are specified as
87 * physical addresses.
88 */
89#ifdef CONFIG_BLK_DEV_INITRD
90extern void early_init_dt_setup_initrd_arch(unsigned long start,
91 unsigned long end);
92#endif
93
94/* Early flat tree scan hooks */
95extern int early_init_dt_scan_root(unsigned long node, const char *uname,
96 int depth, void *data);
70 97
71/* Other Prototypes */ 98/* Other Prototypes */
72extern void finish_device_tree(void);
73extern void unflatten_device_tree(void); 99extern void unflatten_device_tree(void);
74extern void early_init_devtree(void *); 100extern 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);
84 101
85#endif /* __ASSEMBLY__ */ 102#endif /* __ASSEMBLY__ */
86#endif /* _LINUX_OF_FDT_H */ 103#endif /* _LINUX_OF_FDT_H */
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-29 09:19:41 -0500