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-rw-r--r--include/linux/of_fdt.h79
1 files changed, 50 insertions, 29 deletions
diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h
index 41d432b13553..71e1a916d3fa 100644
--- a/include/linux/of_fdt.h
+++ b/include/linux/of_fdt.h
@@ -42,45 +42,66 @@
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#if defined(CONFIG_OF_FLATTREE)
61/* TBD: Temporary export of fdt globals - remove when code fully merged */
62extern int __initdata dt_root_addr_cells;
63extern int __initdata dt_root_size_cells;
64extern struct boot_param_header *initial_boot_params;
65
60/* For scanning the flat device-tree at boot time */ 66/* For scanning the flat device-tree at boot time */
61extern int __init of_scan_flat_dt(int (*it)(unsigned long node, 67extern char *find_flat_dt_string(u32 offset);
62 const char *uname, int depth, 68extern int of_scan_flat_dt(int (*it)(unsigned long node, const char *uname,
63 void *data), 69 int depth, void *data),
64 void *data); 70 void *data);
65extern void __init *of_get_flat_dt_prop(unsigned long node, const char *name, 71extern void *of_get_flat_dt_prop(unsigned long node, const char *name,
66 unsigned long *size); 72 unsigned long *size);
67extern int __init of_flat_dt_is_compatible(unsigned long node, 73extern int of_flat_dt_is_compatible(unsigned long node, const char *name);
68 const char *name); 74extern unsigned long of_get_flat_dt_root(void);
69extern unsigned long __init of_get_flat_dt_root(void); 75extern void early_init_dt_scan_chosen_arch(unsigned long node);
76extern int early_init_dt_scan_chosen(unsigned long node, const char *uname,
77 int depth, void *data);
78extern void early_init_dt_check_for_initrd(unsigned long node);
79extern int early_init_dt_scan_memory(unsigned long node, const char *uname,
80 int depth, void *data);
81extern void early_init_dt_add_memory_arch(u64 base, u64 size);
82extern u64 early_init_dt_alloc_memory_arch(u64 size, u64 align);
83extern u64 dt_mem_next_cell(int s, __be32 **cellp);
84
85/*
86 * If BLK_DEV_INITRD, the fdt early init code will call this function,
87 * to be provided by the arch code. start and end are specified as
88 * physical addresses.
89 */
90#ifdef CONFIG_BLK_DEV_INITRD
91extern void early_init_dt_setup_initrd_arch(unsigned long start,
92 unsigned long end);
93#endif
94
95/* Early flat tree scan hooks */
96extern int early_init_dt_scan_root(unsigned long node, const char *uname,
97 int depth, void *data);
70 98
71/* Other Prototypes */ 99/* Other Prototypes */
72extern void finish_device_tree(void);
73extern void unflatten_device_tree(void); 100extern void unflatten_device_tree(void);
74extern void early_init_devtree(void *); 101extern void early_init_devtree(void *);
75extern int machine_is_compatible(const char *compat); 102#else /* CONFIG_OF_FLATTREE */
76extern void print_properties(struct device_node *node); 103static inline void unflatten_device_tree(void) {}
77extern int prom_n_intr_cells(struct device_node* np); 104#endif /* CONFIG_OF_FLATTREE */
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);
84 105
85#endif /* __ASSEMBLY__ */ 106#endif /* __ASSEMBLY__ */
86#endif /* _LINUX_OF_FDT_H */ 107#endif /* _LINUX_OF_FDT_H */
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-09 18:34:23 -0500