diff options
Diffstat (limited to 'src/include/device_tree.h')
| -rw-r--r-- | src/include/device_tree.h | 40 |
1 files changed, 22 insertions, 18 deletions
diff --git a/src/include/device_tree.h b/src/include/device_tree.h index 4c1a37c00c..14be8322c6 100644 --- a/src/include/device_tree.h +++ b/src/include/device_tree.h @@ -50,7 +50,7 @@ struct fdt_header { struct fdt_property { const char *name; - void *data; + const void *data; uint32_t size; }; @@ -88,7 +88,7 @@ struct device_tree_reserve_map_entry struct device_tree { - void *header; + const void *header; uint32_t header_size; struct list_node reserve_map; @@ -104,17 +104,18 @@ struct device_tree */ // Read the property, if any, at offset offset. -int fdt_next_property(void *blob, uint32_t offset, struct fdt_property *prop); +int fdt_next_property(const void *blob, uint32_t offset, + struct fdt_property *prop); // Read the name of the node, if any, at offset offset. -int fdt_node_name(void *blob, uint32_t offset, const char **name); +int fdt_node_name(const void *blob, uint32_t offset, const char **name); -void fdt_print_node(void *blob, uint32_t offset); -int fdt_skip_node(void *blob, uint32_t offset); +void fdt_print_node(const void *blob, uint32_t offset); +int fdt_skip_node(const void *blob, uint32_t offset); // Read a flattened device tree into a heirarchical structure which refers to // the contents of the flattened tree in place. Modifying the flat tree // invalidates the unflattened one. -struct device_tree *fdt_unflatten(void *blob); +struct device_tree *fdt_unflatten(const void *blob); @@ -123,12 +124,13 @@ struct device_tree *fdt_unflatten(void *blob); */ // Figure out how big a device tree would be if it were flattened. -uint32_t dt_flat_size(struct device_tree *tree); +uint32_t dt_flat_size(const struct device_tree *tree); // Flatten a device tree into the buffer pointed to by dest. -void dt_flatten(struct device_tree *tree, void *dest); -void dt_print_node(struct device_tree_node *node); +void dt_flatten(const struct device_tree *tree, void *dest); +void dt_print_node(const struct device_tree_node *node); // Read #address-cells and #size-cells properties from a node. -void dt_read_cell_props(struct device_tree_node *node, u32 *addrcp, u32 *sizecp); +void dt_read_cell_props(const struct device_tree_node *node, u32 *addrcp, + u32 *sizecp); // Look up or create a node relative to a parent node, through its path // represented as an array of strings. struct device_tree_node *dt_find_node(struct device_tree_node *parent, const char **path, @@ -148,15 +150,16 @@ struct device_tree_node *dt_find_next_compat_child(struct device_tree_node *pare struct device_tree_node *dt_find_prop_value(struct device_tree_node *parent, const char *name, void *data, size_t size); // Return the phandle -uint32_t dt_get_phandle(struct device_tree_node *node); +uint32_t dt_get_phandle(const struct device_tree_node *node); // Write src into *dest as a 'length'-byte big-endian integer. void dt_write_int(u8 *dest, u64 src, size_t length); // Delete a property void dt_delete_prop(struct device_tree_node *node, const char *name); // Add different kinds of properties to a node, or update existing ones. -void dt_add_bin_prop(struct device_tree_node *node, const char *name, void *data, - size_t size); -void dt_add_string_prop(struct device_tree_node *node, const char *name, char *str); +void dt_add_bin_prop(struct device_tree_node *node, const char *name, + const void *data, size_t size); +void dt_add_string_prop(struct device_tree_node *node, const char *name, + const char *str); void dt_add_u32_prop(struct device_tree_node *node, const char *name, u32 val); void dt_add_u64_prop(struct device_tree_node *node, const char *name, u64 val); void dt_add_reg_prop(struct device_tree_node *node, u64 *addrs, u64 *sizes, @@ -164,9 +167,10 @@ void dt_add_reg_prop(struct device_tree_node *node, u64 *addrs, u64 *sizes, int dt_set_bin_prop_by_path(struct device_tree *tree, const char *path, void *data, size_t size, int create); -void dt_find_bin_prop(struct device_tree_node *node, const char *name, void **data, - size_t *size); -const char *dt_find_string_prop(struct device_tree_node *node, const char *name); +void dt_find_bin_prop(const struct device_tree_node *node, const char *name, + const void **data, size_t *size); +const char *dt_find_string_prop(const struct device_tree_node *node, + const char *name); /* * Fixups to apply to a kernel's device tree before booting it. |