diff options
Diffstat (limited to 'src/include')
-rw-r--r-- | src/include/device_tree.h | 232 | ||||
-rw-r--r-- | src/include/fit.h | 2 |
2 files changed, 1 insertions, 233 deletions
diff --git a/src/include/device_tree.h b/src/include/device_tree.h deleted file mode 100644 index bb522bf1da..0000000000 --- a/src/include/device_tree.h +++ /dev/null @@ -1,232 +0,0 @@ -/* Taken from depthcharge: src/base/device_tree.h */ -/* SPDX-License-Identifier: GPL-2.0-or-later */ - -#ifndef __DEVICE_TREE_H__ -#define __DEVICE_TREE_H__ - -#include <stdbool.h> -#include <stddef.h> -#include <stdint.h> -#include <commonlib/list.h> - -/* - * Flattened device tree structures/constants. - */ - -struct fdt_header { - uint32_t magic; - uint32_t totalsize; - uint32_t structure_offset; - uint32_t strings_offset; - uint32_t reserve_map_offset; - - uint32_t version; - uint32_t last_comp_version; - - uint32_t boot_cpuid_phys; - - uint32_t strings_size; - uint32_t structure_size; -}; - -#define FDT_HEADER_MAGIC 0xd00dfeed -#define FDT_SUPPORTED_VERSION 17 -#define FDT_TOKEN_BEGIN_NODE 1 -#define FDT_TOKEN_END_NODE 2 -#define FDT_TOKEN_PROPERTY 3 -#define FDT_TOKEN_NOP 4 -#define FDT_TOKEN_END 9 -#define FDT_PHANDLE_ILLEGAL 0xdeadbeef - -struct fdt_property -{ - const char *name; - void *data; - uint32_t size; -}; - -/* - * Unflattened device tree structures. - */ - -struct device_tree_region { - u64 addr; - u64 size; -}; - -struct device_tree_property -{ - struct fdt_property prop; - - struct list_node list_node; -}; - -struct device_tree_node -{ - const char *name; - uint32_t phandle; - - /* List of struct device_tree_property-s. */ - struct list_node properties; - /* List of struct device_tree_nodes. */ - struct list_node children; - - struct list_node list_node; -}; - -struct device_tree_reserve_map_entry -{ - uint64_t start; - uint64_t size; - - struct list_node list_node; -}; - -struct device_tree -{ - const void *header; - uint32_t header_size; - uint32_t max_phandle; - - struct list_node reserve_map; - - struct device_tree_node *root; -}; - -/* - * Flattened device tree functions. These generally return the number of bytes - * which were consumed reading the requested value. - */ - -/* Checks if blob points to a valid FDT */ -bool fdt_is_valid(const void *blob); -/* Read the property at offset, if any exists. */ -int fdt_next_property(const void *blob, uint32_t offset, - struct fdt_property *prop); -/* Read the name of the node at offset, if any exists. */ -int fdt_node_name(const void *blob, uint32_t offset, const char **name); - -void fdt_print_node(const void *blob, uint32_t offset); -int fdt_skip_node(const void *blob, uint32_t offset); - -/* Read property and put into fdt_prop. Returns offset to property */ -u32 fdt_read_prop(const void *blob, u32 node_offset, const char *prop_name, - struct fdt_property *fdt_prop); -/* Read reg property and save regions inside 'regions'. Returns number of regions read */ -u32 fdt_read_reg_prop(const void *blob, u32 node_offset, u32 addr_cells, u32 size_cells, - struct device_tree_region regions[], size_t regions_count); -/* Find a node by a given path and return the offset */ -u32 fdt_find_node_by_path(const void *blob, const char *path, u32 *addrcp, u32 *sizecp); -/* Find multiple nodes matching a given pattern. Returns number of nodes found */ -size_t fdt_find_subnodes_by_prefix(const void *blob, u32 node_offset, const char *prefix, - u32 *addrcp, u32 *sizecp, u32 results[], size_t results_len); -/* Find a node by a given alias and return its offset */ -u32 fdt_find_node_by_alias(const void *blob, const char *alias_name, - u32 *addr_cells, u32 *size_cells); -/* - * Read the node name into 'name' of the node behind 'node_offset' - * and return total bytes used for name - */ -int fdt_next_node_name(const void *blob, uint32_t node_offset, const char **name); - - /* Read memory regions from a flat device-tree. */ -size_t fdt_read_memory_regions(const void *blob, struct device_tree_region regions[], - size_t regions_count); - /* Find top of memory from a flat device-tree. */ -uint64_t fdt_get_memory_top(const void *blob); - -/* Read a flattened device tree into a hierarchical 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(const void *blob); - -/* - * Unflattened device tree functions. - */ - -/* Figure out how big a device tree would be if it were flattened. */ -uint32_t dt_flat_size(const struct device_tree *tree); -/* Flatten a device tree into the buffer pointed to by dest. */ -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(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, - u32 *addrcp, u32 *sizecp, int create); -struct device_tree_node *dt_find_node_by_phandle(struct device_tree_node *root, - uint32_t phandle); -/* Look up or create a node in the tree, through its path - represented as a string of '/' separated node names. */ -struct device_tree_node *dt_find_node_by_path(struct device_tree *tree, - const char *path, u32 *addrcp, u32 *sizecp, int create); -/* Look up a node through an alias. */ -struct device_tree_node *dt_find_node_by_alias(struct device_tree *tree, - const char *alias); -/* Look up a node relative to a parent node, through its compatible string. */ -struct device_tree_node *dt_find_compat(struct device_tree_node *parent, const char *compatible); -/* Look up the next child of a parent node, through its compatible string. It - uses child pointer as the marker to find next. */ -struct device_tree_node *dt_find_next_compat_child(struct device_tree_node *parent, - struct device_tree_node *child, - const char *compat); -/* Look up a node relative to a parent node, through its property value. */ -struct device_tree_node *dt_find_prop_value(struct device_tree_node *parent, const char *name, - void *data, size_t size); -/* 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, - 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, - int count, u32 addr_cells, u32 size_cells); -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(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); - -/* Apply an overlay to a base device tree. Ownership of the overlay data passes - to the newly combined base tree -- do not free() or access it afterwards! */ -int dt_apply_overlay(struct device_tree *tree, struct device_tree *overlay); - -/* - * Fixups to apply to a kernel's device tree before booting it. - */ - -struct device_tree_fixup -{ - /** - * The function which does the fixing. - * 0 on success, non-zero on error. - */ - int (*fixup)(struct device_tree_fixup *fixup, - struct device_tree *tree); - - struct list_node list_node; -}; - -extern struct list_node device_tree_fixups; - -/** - * Function to apply fixups. - * 0 on success, non-zero on error. - */ -int dt_apply_fixups(struct device_tree *tree); - -/* - * Init/retrieve the /reserved-memory/ node. - */ -struct device_tree_node *dt_init_reserved_memory_node(struct device_tree *tree); - -#endif /* __DEVICE_TREE_H__ */ diff --git a/src/include/fit.h b/src/include/fit.h index d587750743..25f85ab41a 100644 --- a/src/include/fit.h +++ b/src/include/fit.h @@ -4,8 +4,8 @@ #ifndef __LIB_FIT_H__ #define __LIB_FIT_H__ +#include <commonlib/device_tree.h> #include <commonlib/list.h> -#include <device_tree.h> #include <program_loading.h> #include <stddef.h> #include <stdint.h> |