/* SPDX-License-Identifier: BSD-2-Clause */
/*
* COPYRIGHT (c) 2013-2017 Chris Johns <chrisj@rtems.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* Interface based on the libdft:
* libfdt - Flat Device Tree manipulation
* Copyright (C) 2006 David Gibson, IBM Corporation.
*/
/**
* @file
*
* @ingroup rtems_fdt
*
* @brief RTEMS Flattened Device Tree
*
* Support for loading, managing and accessing FDT blobs in RTEMS.
*/
#if !defined (_RTEMS_FDT_H_)
#define _RTEMS_FDT_H_
#include <rtems.h>
#include <rtems/chain.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/**
* A blob.
*/
struct rtems_fdt_blob;
typedef struct rtems_fdt_blob rtems_fdt_blob;
/**
* A blob handle is a way to manage access to the FDT blobs. The blob is
* referenced via the handle to allow searches across loaded DTB's to return
* the referenced DTB.
*/
typedef struct
{
rtems_fdt_blob* blob; /**< The blob the handle references. */
} rtems_fdt_handle;
/**
* FDT Address property. It is an address an optionally a size.
*
* Only 32bit addresses and sizes on 32bit machine. Ignore the upper
* 32bits.
*/
typedef struct
{
int node;
uint64_t address;
uint64_t size;
int address_cells;
int size_cells;
} rtems_fdt_address_map;
/*
* The following are mappings to the standard FDT calls.
*/
/**
* RTEMS_FDT_ERR_NOTFOUND: The requested node or property does not exist
*/
#define RTEMS_FDT_ERR_NOTFOUND 1
/**
* RTEMS_FDT_ERR_EXISTS: Attemped to create a node or property which already
* exists */
#define RTEMS_FDT_ERR_EXISTS 2
/**
* RTEMS_FDT_ERR_NOSPACE: Operation needed to expand the device tree, but its
* buffer did not have sufficient space to contain the expanded tree. Use
* rtems_fdt_open_into() to move the device tree to a buffer with more space.
*/
#define RTEMS_FDT_ERR_NOSPACE 3
/* Error codes: codes for bad parameters */
/**
* RTEMS_FDT_ERR_BADOFFSET: Function was passed a structure block offset which
* is out-of-bounds, or which points to an unsuitable part of the structure for
* the operation.
*/
#define RTEMS_FDT_ERR_BADOFFSET 4
/**
* RTEMS_FDT_ERR_BADPATH: Function was passed a badly formatted path
* (e.g. missing a leading / for a function which requires an absolute path)
*/
#define RTEMS_FDT_ERR_BADPATH 5
/**
* RTEMS_FDT_ERR_BADPHANDLE: Function was passed an invalid phandle value.
* phandle values of 0 and -1 are not permitted.
*/
#define RTEMS_FDT_ERR_BADPHANDLE 6
/**
* RTEMS_FDT_ERR_BADSTATE: Function was passed an incomplete device tree
* created by the sequential-write functions, which is not sufficiently
* complete for the requested operation.
*/
#define RTEMS_FDT_ERR_BADSTATE 7
/* Error codes: codes for bad device tree blobs */
/**
* RTEMS_FDT_ERR_TRUNCATED: Structure block of the given device tree ends
* without an RTEMS_FDT_END tag.
*/
#define RTEMS_FDT_ERR_TRUNCATED 8
/**
* RTEMS_FDT_ERR_BADMAGIC: Given "device tree" appears not to be a device tree
* at all - it is missing the flattened device tree magic number.
*/
#define RTEMS_FDT_ERR_BADMAGIC 9
/** RTEMS_FDT_ERR_BADVERSION: Given device tree has a version which can't be
* handled by the requested operation. For read-write functions, this may mean
* that rtems_fdt_open_into() is required to convert the tree to the expected
* version.
*/
#define RTEMS_FDT_ERR_BADVERSION 10
/**
* RTEMS_FDT_ERR_BADSTRUCTURE: Given device tree has a corrupt structure block
* or other serious error (e.g. misnested nodes, or subnodes preceding
* properties).
*/
#define RTEMS_FDT_ERR_BADSTRUCTURE 11
/**
* RTEMS_FDT_ERR_BADLAYOUT: For read-write functions, the given device tree has
* it's sub-blocks in an order that the function can't handle (memory reserve
* map, then structure, then strings). Use rtems_fdt_open_into() to reorganize
* the tree into a form suitable for the read-write operations.
*/
#define RTEMS_FDT_ERR_BADLAYOUT 12
/**
* "Can't happen" error indicating a bug in libfdt
*/
#define RTEMS_FDT_ERR_INTERNAL 13
/* RTEMS error codes. */
/**
* Invalid handle.
*/
#define RTEMS_FDT_ERR_INVALID_HANDLE 100
/**
* No memory.
*/
#define RTEMS_FDT_ERR_NO_MEMORY 101
/**
* File not found.
*/
#define RTEMS_FDT_ERR_NOT_FOUND 102
/**
* Cannot read the DTB into memory.
*/
#define RTEMS_FDT_ERR_READ_FAIL 103
/**
* The blob cannot be unloaded as it is referenced.
*/
#define RTEMS_FDT_ERR_REFERENCED 104
/**
* The property length is invalid
*/
#define RTEMS_FDT_ERR_BADLENGTH 105
#define RTEMS_FDT_ERR_RTEMS_MIN 100
#define RTEMS_FDT_ERR_MAX 105
/**
* Initialise a handle to a default state.
*
* @param handle The handle to initialise.
*/
void rtems_fdt_init_handle (rtems_fdt_handle* handle);
/**
* Duplicate a handle. The copy must be released.
*
* @param from Duplicate from this handle.
* @param to Duplicate to this handle.
*/
void rtems_fdt_dup_handle (rtems_fdt_handle* from, rtems_fdt_handle* to);
/**
* Release a blob from a handle and clear it.
*
* @param handle The handle to check.
*/
void rtems_fdt_release_handle (rtems_fdt_handle* handle);
/**
* Check if a handle had a valid blob assigned.
*
* @param handle The handle to check.
* @retval true The handle has a valid blob.
* @retval false The handle does not have a valid blob.
*/
bool rtems_fdt_valid_handle (const rtems_fdt_handle* handle);
/**
* Find a tree node by its full path looking across of loaded blobs.. Each path
* component may omit the unit address portion, but the results of this are
* undefined if any such path component is ambiguous (that is if there are
* multiple nodes at the relevant level matching the given component,
* differentiated only by unit address).
*
* If the handle points to a valid blob it is release and the search starts
* from the first blob.
*
* @param handle The FDT handle assigned to the blob if found else left invalid.
* @param path Full path of the node to locate.
* @param int If less than 0 an error code else the node offset is returned.
*/
int rtems_fdt_find_path_offset (rtems_fdt_handle* handle, const char* path);
/**
* Load a device tree blob or DTB file into memory and register it on the chain
* of blobs.
*
* @param filename The name of the blob file to load.
* @param handle The handle returns the reference to the blob once load.
* @return int If less than 0 it is an error code else it is the blob descriptor.
*/
int rtems_fdt_load (const char* const filename, rtems_fdt_handle* handle);
/**
* Register a device tree blob or DTB on to the chain of blobs.
*
* @param blob_desc A pointer to the blob.
* @param handle The handle returns the reference to the blob once load.
* @return int If less than 0 it is an error code else it is the blob descriptor.
*/
int rtems_fdt_register (const void* blob, rtems_fdt_handle* handle);
/**
* Unload a device tree blob or DTB file and release any memory allocated when
* loading. The blob is removed from the list if registered.
*
* @param blob_desc A valid blob descriptor.
* @return int If less than 0 it is an error code else 0 is return on success.
*/
int rtems_fdt_unload (rtems_fdt_handle* handle);
/**
* Returns the number of entries in the device tree blob's memory
* reservation map. This does not include the terminating 0,0 entry
* or any other (0,0) entries reserved for expansion.
*
* @param blob_desc A valid blob descriptor.
* @return int The number of entries.
*/
int rtems_fdt_num_mem_rsv (rtems_fdt_handle* handle);
/**
* Retrieve one memory reserve map entry. On success, *address and *size will
* contain the address and size of the n-th reserve map entry from the device
* tree blob, in native-endian format.
*
* @param blob_desc A valid blob descriptor.
* @param address Pointer to 64-bit variables to hold the addresses.
* @param size Pointer to 64-bit variables to hold the size.
* @return int If less than 0 it is an error code else 0 is returned on
* success.
*/
int rtems_fdt_get_mem_rsv (rtems_fdt_handle* handle,
int n,
uint64_t* address,
uint64_t* size);
/**
* Find a subnode based on substring. Identical to rtems_fdt_subnode_offset(),
* but only examine the first namelen characters of name for matching the
* subnode name. This is useful for finding subnodes based on a portion of a
* larger string, such as a full path.
*
* @param blob_desc A valid blob descriptor.
* @param parentoffset Structure block offset of a node
* @param name Name of the subnode to locate.
* @param namelen Number of characters of name to consider.
* @return int If less than 0 it is an error code else the node offset is
* returned.
*/
int rtems_fdt_subnode_offset_namelen (rtems_fdt_handle* handle,
int parentoffset,
const char* const name,
int namelen);
/**
* Find a subnode of a given node at structure block offset parentoffset with
* the given name. The name may include a unit address, in which case
* rtems_fdt_subnode_offset() will find the subnode with that unit address, or
* the unit address may be omitted, in which case rtems_fdt_subnode_offset()
* will find an arbitrary subnode whose name excluding unit address matches the
* given name.
*
* @param blob_desc A valid blob descriptor.
* @param parentoffset Structure block offset of a node.
* @param name The name of the subnode to locate.
* @return int If less than 0 it is an error code else the subnode offset is
* returned.
*/
int rtems_fdt_subnode_offset (rtems_fdt_handle* handle,
int parentoffset,
const char* const name);
/**
* Find a tree node by its full path. Each path component may omit the unit
* address portion, but the results of this are undefined if any such path
* component is ambiguous (that is if there are multiple nodes at the relevant
* level matching the given component, differentiated only by unit address).
*
* @param handle The FDT handle to the current blob.
* @param path Full path of the node to locate.
* @param int If less than 0 an error code else the node offset is returned.
*/
int rtems_fdt_path_offset (rtems_fdt_handle* handle, const char* path);
/**
* Retrieve the name of a given node (including unit address) of the device
* tree node at structure block offset @nodeoffset. If @length is non-NULL,
* the length of this name is also returned, in the integer pointed to by
* @length.
*
* @param handle The FDT handle to the current blob.
* @param nodeoffset Structure block offset of the starting node.
* @param length Pointer to an integer variable or NULL. If non-NULL, this will
* be overwritten with either the length in bytes or the error
* code.
* @return const char* The node's name on success or NULL on error. The length
* if non-NULL will hold the error code.
*/
const char* rtems_fdt_get_name (rtems_fdt_handle* handle,
int nodeoffset,
int* length);
/**
* Retrieve the offset for the first property for a node.
*
* @param handle The FDT handle to the current blob.
* @param nodeoffset Structure block offset of the starting node.
* @return int The offset of a node's first property.
*/
int rtems_fdt_first_prop_offset(rtems_fdt_handle* handle, int nodeoffset);
/**
* Retrieve the next property of a node relative to the property
*
* @param handle The FDT handle to the current blob.
* @param propoffset Property offset to search from
* @return int Property offset or end if less than 0.
*/
int rtems_fdt_next_prop_offset(rtems_fdt_handle* handle, int propoffset);
/**
* Retrieve the property value, name and length of name given a
* property offset.
*
* @param handle The FDT handle to the current blob.
* @param propoffset Property offset
* @param name If not NULL set the pointer to the name string.
* @param length Pointer to an integer variable or NULL. If non-NULL, this will
* be overwritten with either the length in bytes or the error
* code.
* @return const void* The node's value data.
*/
const void* rtems_fdt_getprop_by_offset(rtems_fdt_handle* handle,
int propoffset,
const char** name,
int* length);
/**
* Get property value based on substring. Identical to rtems_fdt_getprop(), but
* only examine the first namelen characters of name for matching the property
* name.
*
* @param handle The FDT handle to the current blob.
* @param nodeoffset Offset of the node whose property to find
* @param name The name of the property to find
* @param namelen The number of characters of name to consider
* @param length Pointer to an integer variable or NULL. If non-NULL, this will
* be overwritten with either the length in bytes or the error
* code.
* @return const void* The node's property on success or NULL on error. The
* length if non-NULL will hold the error code.
*/
const void *rtems_fdt_getprop_namelen (rtems_fdt_handle* handle,
int nodeoffset,
const char* const name,
int namelen,
int* length);
/**
* Retrieve the value of a given property. Retrieves a pointer to the value of
* the property named 'name' of the node at offset nodeoffset (this will be a
* pointer to within the device blob itself, not a copy of the value). If lenp
* is non-NULL, the length of the property value is also returned, in the
* integer pointed to by @length.
*
* @param handle The FDT handle to the current blob.
* @param nodeoffset The offset of the node whose property to find.
* @param name The name of the property to find.
* @param length Pointer to an integer variable or NULL. If non-NULL, this will
* be overwritten with either the length in bytes or the error
* code.
* @return const void* The node's property on success or NULL on error. The
* length if non-NULL will hold the error code.
*/
const void *rtems_fdt_getprop (rtems_fdt_handle* handle,
int nodeoffset,
const char* const name,
int* length);
/**
* Retrieve the phandle of the device tree node at structure block
* offset nodeoffset.
*
* @param handle The FDT handle to the current blob.
* @oaram nodeoffset The structure block offset of the node.
* return uint32_t The phandle of the node at nodeoffset, on success (!= 0, !=
* -1) 0, if the node has no phandle, or another error occurs.
*/
uint32_t rtems_fdt_get_phandle (rtems_fdt_handle* handle, int nodeoffset);
/**
* Get alias based on substring. Identical to rtems_fdt_get_alias(), but only
* examine the first namelen characters of name for matching the alias name.
*
* @param handle The FDT handle to the current blob.
* @param name The name of the alias th look up.
* @param namelen The number of characters of name to consider.
* @return const char* The alias or NULL.
*/
const char *rtems_fdt_get_alias_namelen (rtems_fdt_handle* handle,
const char* const name,
int namelen);
/**
* Retreive the path referenced by a given alias. That is, the value of the
* property named 'name' in the node /aliases.
*
* @param handle The FDT handle to the current blob.
* @param name The name of the alias to look up.
* @return const char* A pointer to the expansion of the alias named 'name', of
* it exists NULL, if the given alias or the /aliases node
* does not exist
*/
const char* rtems_fdt_get_alias (rtems_fdt_handle* handle, const char* name);
/**
* Determine the full path of a node. This function is expensive, as it must
* scan the device tree structure from the start to nodeoffset. It computes the
* full path of the node at offset nodeoffset, and records that path in the
* buffer at buf.
*
* @param handle The FDT handle to the current blob.
* @param nodeoffset The offset of the node whose path to find.
* @param buf A character buffer to contain the returned path (will be
* overwritten)
* @param buflen The size of the character buffer at buf.
* @return int 0 on success of an error code.
*/
int rtems_fdt_get_path (rtems_fdt_handle* handle,
int nodeoffset,
char* buf,
int buflen);
/**
* Find a specific ancestor of a node at a specific depth from the root (where
* the root itself has depth 0, its immediate subnodes depth 1 and so forth).
* So rtems_fdt_supernode_atdepth_offset(blob, nodeoffset, 0, NULL); will
* always return 0, the offset of the root node. If the node at nodeoffset has
* depth D, then:
* rtems_fdt_supernode_atdepth_offset(blob, nodeoffset, D, NULL);
* will return nodeoffset itself.
*
* @param handle The FDT handle to the current blob.
* @param nodeoffset The offset of the node whose parent to find.
* @param supernodedepth The depth of the ancestor to find.
* @oaram nodedepth The pointer to an integer variable (will be overwritten) or
* NULL
* @return int If less than 0 an error else the node offset.
*/
int rtems_fdt_supernode_atdepth_offset (rtems_fdt_handle* handle,
int nodeoffset,
int supernodedepth,
int* nodedepth);
/**
* Find the depth of a given node. The root node has depth 0, its immediate
* subnodes depth 1 and so forth.
*
* @note This function is expensive, as it must scan the device tree structure
* from the start to nodeoffset.
*
* @param handle The FDT handle to the current blob.
* @param nodeoffset The offset of the node whose parent to find.
* @return int If less than 0 an error else the node offset.
*/
int rtems_fdt_node_depth (rtems_fdt_handle* handle, int nodeoffset);
/**
* Find the parent of a given node. This funciton locates the parent node of a
* given node (that is, it finds the offset of the node which contains the node
* at nodeoffset as a subnode).
*
* @note This function is expensive, as it must scan the device tree structure
* from the start to nodeoffset, *twice*.
*
* @param handle The FDT handle to the current blob.
* @param nodeoffset The offset of the node whose parent to find.
* @return int If less than 0 an error else the node offset.
*/
int rtems_fdt_parent_offset (rtems_fdt_handle* handle, int nodeoffset);
/**
* Find nodes with a given property value. This funtion returns the offset of
* the first node after startoffset, which has a property named propname whose
* value is of length proplen and has value equal to propval; or if startoffset
* is -1, the very first such node in the tree.
*
* To iterate through all nodes matching the criterion, the following idiom can
* be used:
* offset = rtemsfdt_node_offset_by_prop_value(blob, -1, propname,
* propval, proplen);
* while (offset != -RTEMS_FDT_ERR_NOTFOUND) {
* // other code here
* offset = rtems_fdt_node_offset_by_prop_value(fdt, offset, propname,
* propval, proplen);
* }
*
* @note The -1 in the first call to the function, if 0 is used here
* instead, the function will never locate the root node, even if it
* matches the criterion.
*
* @param handle The FDT handle to the current blob.
* @param startoffset Only find nodes after this offset.
* @param propname The property name to check.
* @param propval The property value to search for.
* @param proplen The length of the value in propval.
* @return int The structure block offset of the located node (>= 0,
* >startoffset), on success and an error code is less
* than 0.
*/
int rtems_fdt_node_offset_by_prop_value (rtems_fdt_handle* handle,
int startoffset,
const char* const propname,
const void* propval,
int proplen);
/**
* Find the node with a given phandle returning the offset of the node which
* has the given phandle value. If there is more than one node in the tree
* with the given phandle (an invalid tree), results are undefined.
*
* @param handle The FDT handle to the current blob.
* @param phandle The phandle value.
* @return int If less than 0 an error else the node offset.
*/
int rtems_fdt_node_offset_by_phandle (rtems_fdt_handle* handle,
uint32_t phandle);
/**
* Check a node's compatible property returning 0 if the given node contains a
* 'compatible' property with the given string as one of its elements, it
* returns non-zero otherwise, or on error.
*
* @param handle The FDT handle to the current blob.
* @param nodeoffset The offset of a tree node.
* @param compatible The string to match against.
* @retval 0, if the node has a 'compatible' property listing the given string.
* @retval 1, if the node has a 'compatible' property, but it does not list the
* given string
*/
int rtems_fdt_node_check_compatible (rtems_fdt_handle* handle,
int nodeoffset,
const char* const compatible);
/**
* Find nodes with a given 'compatible' value returning the offset of the first
* node after startoffset, which has a 'compatible' property which lists the
* given compatible string; or if startoffset is -1, the very first such node
* in the tree.
*
* To iterate through all nodes matching the criterion, the following idiom can
* be used:
*
* offset = rtems_fdt_node_offset_by_compatible(blob, -1, compatible);
* while (offset != -RTEMS_FDT_ERR_NOTFOUND) {
* // other code here
* offset = rtems_fdt_node_offset_by_compatible(blob, offset, compatible);
* }
*
* @note The -1 in the first call to the function, if 0 is used here instead,
* the function will never locate the root node, even if it matches the
* criterion.
*
* @param handle The FDT handle to the current blob.
* @param startoffset Only find nodes after this offset.
* @param compatible The 'compatible' string to match against.
* @return int If less than 0 an error else the node offset.
*/
int rtems_fdt_node_offset_by_compatible(rtems_fdt_handle* handle,
int startoffset,
const char* compatible);
/**
* Traverse to the next node.
*
* @param handle The FDT handle to the current blob.
* @param offset The offset in the blob to start looking for the next node.
* @param depth Pointer to return the depth the node is.
* @return int If less than 0 an error else the node offset.
*/
int rtems_fdt_next_node (rtems_fdt_handle* handle, int offset, int* depth);
/**
* Return an error string given an error value.
*
* @param errval The error value.
* @return const char* The error string.
*/
const char* rtems_fdt_strerror (int errval);
/**
* Return a parent property given a node offset. Travel up until found
* or the root node is reached
*/
bool rtems_fdt_get_parent_prop_value(rtems_fdt_handle* handle,
int nodeoffset,
const char* name,
uint32_t* value);
/**
* Return a property given a path.
*/
int rtems_fdt_prop_value(const char* const path,
const char* const propname,
void* value,
size_t* size);
/**
* Create a map given a path the property name and the names of the subnodes of
* the path.
*/
int rtems_fdt_prop_map (const char* const path,
const char* const propname,
const char* const names[],
uintptr_t* values,
size_t count);
/*
* Get a value given a path and a property.
*/
int rtems_fdt_get_value (const char* const path,
const char* const property,
size_t size,
uintptr_t* value);
/**
* Get the number of entries in an FDT handle.
*/
int rtems_fdt_num_entries(rtems_fdt_handle* handle);
/**
* Get the numbered entry name. Note that the id isn't the same as
* the offset - it's numbered 0, 1, 2 ... num_entries-1
*/
const char *rtems_fdt_entry_name(rtems_fdt_handle* handle, int id);
/**
* Get the numbered entry offset. Note that the id isn't the same as
* the offset - it's numbered 0, 1, 2 ... num_entries-1
*/
int rtems_fdt_entry_offset(rtems_fdt_handle* handle, int id);
/*
* Helper function to convert the void* property result of unknown
* length to an unsigned int pointer value.
*/
uintptr_t rtems_fdt_get_offset_len_uintptr(const void* prop, int offset, int len);
/*
* Helper function to convert the void* property result to a 32bit unsigned int.
*/
uint32_t rtems_fdt_get_uint32(const void* prop);
uint32_t rtems_fdt_get_offset_uint32(const void* prop, int offset);
/*
* Helper function to convert the void* property result to a 64bit unsigned int.
*/
uint64_t rtems_fdt_get_uint64(const void* prop);
uint64_t rtems_fdt_get_offset_uint64(const void* prop, int offset);
/*
* Helper function to convert the void* property result to a uintptr_t
*/
uintptr_t rtems_fdt_get_uintptr(const void* prop);
uintptr_t rtems_fdt_get_offset_uintptr(const void* prop, int offset);
/*
* Find the address cells property in parent nodes.
*/
int rtems_fdt_getprop_address_cells(rtems_fdt_handle* handle, int nodeoffset);
/*
* Find the size cells property in parent nodes.
*/
int rtems_fdt_getprop_size_cells(rtems_fdt_handle* handle, int nodeoffset);
/*
* Get an address space property.
*/
int rtems_fdt_getprop_address_map(rtems_fdt_handle* handle,
const char* path,
const char* name,
rtems_fdt_address_map* addr_map);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif
