diff options
Diffstat (limited to 'include/linux/of_fdt.h')
| -rw-r--r-- | include/linux/of_fdt.h | 64 |
1 files changed, 14 insertions, 50 deletions
diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h index ddd7219af8a..05117899fcb 100644 --- a/include/linux/of_fdt.h +++ b/include/linux/of_fdt.h @@ -17,60 +17,23 @@ /* Definitions used by the flattened device tree */ #define OF_DT_HEADER 0xd00dfeed /* marker */ -#define OF_DT_BEGIN_NODE 0x1 /* Start of node, full name */ -#define OF_DT_END_NODE 0x2 /* End node */ -#define OF_DT_PROP 0x3 /* Property: name off, size, - * content */ -#define OF_DT_NOP 0x4 /* nop */ -#define OF_DT_END 0x9 - -#define OF_DT_VERSION 0x10 #ifndef __ASSEMBLY__ -/* - * This is what gets passed to the kernel by prom_init or kexec - * - * The dt struct contains the device tree structure, full pathes and - * property contents. The dt strings contain a separate block with just - * the strings for the property names, and is fully page aligned and - * self contained in a page, so that it can be kept around by the kernel, - * each property name appears only once in this page (cheap compression) - * - * the mem_rsvmap contains a map of reserved ranges of physical memory, - * passing it here instead of in the device-tree itself greatly simplifies - * the job of everybody. It's just a list of u64 pairs (base/size) that - * ends when size is 0 - */ -struct boot_param_header { - __be32 magic; /* magic word OF_DT_HEADER */ - __be32 totalsize; /* total size of DT block */ - __be32 off_dt_struct; /* offset to structure */ - __be32 off_dt_strings; /* offset to strings */ - __be32 off_mem_rsvmap; /* offset to memory reserve map */ - __be32 version; /* format version */ - __be32 last_comp_version; /* last compatible version */ - /* version 2 fields below */ - __be32 boot_cpuid_phys; /* Physical CPU id we're booting on */ - /* version 3 fields below */ - __be32 dt_strings_size; /* size of the DT strings block */ - /* version 17 fields below */ - __be32 dt_struct_size; /* size of the DT structure block */ -}; #if defined(CONFIG_OF_FLATTREE) struct device_node; /* For scanning an arbitrary device-tree at any time */ -extern char *of_fdt_get_string(struct boot_param_header *blob, u32 offset); -extern void *of_fdt_get_property(struct boot_param_header *blob, +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, - unsigned long *size); -extern int of_fdt_is_compatible(struct boot_param_header *blob, + int *size); +extern int of_fdt_is_compatible(const void *blob, unsigned long node, const char *compat); -extern int of_fdt_match(struct boot_param_header *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); @@ -78,21 +41,21 @@ extern void of_fdt_unflatten_tree(unsigned long *blob, /* 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 struct boot_param_header *initial_boot_params; +extern void *initial_boot_params; + +extern char __dtb_start[]; +extern char __dtb_end[]; /* For scanning the flat device-tree at boot time */ -extern char *find_flat_dt_string(u32 offset); extern int of_scan_flat_dt(int (*it)(unsigned long node, const char *uname, int depth, void *data), void *data); -extern void *of_get_flat_dt_prop(unsigned long node, const char *name, - unsigned long *size); +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_scan_flat_dt_by_path(const char *path, - int (*it)(unsigned long node, const char *name, int depth, void *data), - void *data); +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); @@ -103,7 +66,7 @@ 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, __be32 **cellp); +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, @@ -120,6 +83,7 @@ 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); #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; } |