/* SPDX-License-Identifier: GPL-2.0+ OR BSD-2-Clause */
/*
* pylibfdt - Flat Device Tree manipulation in Python
* Copyright (C) 2017 Google, Inc.
* Written by Simon Glass <sjg@chromium.org>
*/
%module libfdt
%include <stdint.i>
%{
#define SWIG_FILE_WITH_INIT
#include "libfdt.h"
/*
* We rename this function here to avoid problems with swig, since we also have
* a struct called fdt_property. That struct causes swig to create a class in
* libfdt.py called fdt_property(), which confuses things.
*/
static int _fdt_property(void *fdt, const char *name, const char *val, int len)
{
return fdt_property(fdt, name, val, len);
}
%}
%pythoncode %{
import struct
# Error codes, corresponding to FDT_ERR_... in libfdt.h
(NOTFOUND,
EXISTS,
NOSPACE,
BADOFFSET,
BADPATH,
BADPHANDLE,
BADSTATE,
TRUNCATED,
BADMAGIC,
BADVERSION,
BADSTRUCTURE,
BADLAYOUT,
INTERNAL,
BADNCELLS,
BADVALUE,
BADOVERLAY,
NOPHANDLES) = QUIET_ALL = range(1, 18)
# QUIET_ALL can be passed as the 'quiet' parameter to avoid exceptions
# altogether. All # functions passed this value will return an error instead
# of raising an exception.
# Pass this as the 'quiet' parameter to return -ENOTFOUND on NOTFOUND errors,
# instead of raising an exception.
QUIET_NOTFOUND = (NOTFOUND,)
class FdtException(Exception):
"""An exception caused by an error such as one of the codes above"""
def __init__(self, err):
self.err = err
def __str__(self):
return 'pylibfdt error %d: %s' % (self.err, fdt_strerror(self.err))
def strerror(fdt_err):
"""Get the string for an error number
Args:
fdt_err: Error number (-ve)
Returns:
String containing the associated error
"""
return fdt_strerror(fdt_err)
def check_err(val, quiet=()):
"""Raise an error if the return value is -ve
This is used to check for errors returned by libfdt C functions.
Args:
val: Return value from a libfdt function
quiet: Errors to ignore (empty to raise on all errors)
Returns:
val if val >= 0
Raises
FdtException if val < 0
"""
if val < 0:
if -val not in quiet:
raise FdtException(val)
return val
def check_err_null(val, quiet=()):
"""Raise an error if the return value is NULL
This is used to check for a NULL return value from certain libfdt C
functions
Args:
val: Return value from a libfdt function
quiet: Errors to ignore (empty to raise on all errors)
Returns:
val if val is a list, None if not
Raises
FdtException if val indicates an error was reported and the error
is not in @quiet.
"""
# Normally a list is returned which contains the data and its length.
# If we get just an integer error code, it means the function failed.
if not isinstance(val, list):
if -val not in quiet:
raise FdtException(val)
return val
class Fdt:
"""Device tree class, supporting all operations
The Fdt object is created is created from a device tree binary file,
e.g. with something like:
fdt = Fdt(open("filename.dtb").read())
Operations can then be performed using the methods in this class. Each
method xxx(args...) corresponds to a libfdt function fdt_xxx(fdt, args...).
All methods raise an FdtException if an error occurs. To avoid this
behaviour a 'quiet' parameter is provided for some functions. This
defaults to empty, but you can pass a list of errors that you expect.
If one of these errors occurs, the function will return an error number
(e.g. -NOTFOUND).
"""
def __init__(self, data):
self._fdt = bytearray(data)
check_err(fdt_check_header(self._fdt));
def as_bytearray(self):
"""Get the device tree contents as a bytearray
This can be passed directly to libfdt functions that access a
const void * for the device tree.
Returns:
bytearray containing the device tree
"""
return bytearray(self._fdt)
def next_node(self, nodeoffset, depth, quiet=()):
"""Find the next subnode
Args:
nodeoffset: Node offset of previous node
depth: On input, the depth of the node at nodeoffset. On output, the
depth of the returned node
quiet: Errors to ignore (empty to raise on all errors)
Returns:
The offset of the next node, if any
Raises:
FdtException if no more nodes found or other error occurs
"""
return check_err(fdt_next_node(self._fdt, nodeoffset, depth), quiet)
def first_subnode(self, nodeoffset, quiet=()):
"""Find the first subnode of a parent node
Args:
nodeoffset: Node offset of parent node
quiet: Errors to ignore (empty to raise on all errors)
Returns:
The offset of the first subnode, if any
Raises:
FdtException if no subnodes found or other error occurs
"""
return check_err(fdt_first_subnode(self._fdt, nodeoffset), quiet)
def next_subnode(self, nodeoffset, quiet=()):
"""Find the next subnode
Args:
nodeoffset: Node offset of previous subnode
quiet: Errors to ignore (empty to raise on all errors)
Returns:
The offset of the next subnode, if any
Raises:
FdtException if no more subnodes found or other error occurs
"""
return check_err(fdt_next_subnode(self._fdt, nodeoffset), quiet)
def magic(self):
"""Return the magic word from the header
Returns:
Magic word
"""
return fdt_magic(self._fdt) & 0xffffffff
def totalsize(self):
"""Return the total size of the device tree
Returns:
Total tree size in bytes
"""
return check_err(fdt_totalsize(self._fdt))
def off_dt_struct(self):
"""Return the start of the device-tree struct area
Returns:
Start offset of struct area
"""
return check_err(fdt_off_dt_struct(self._fdt))
def off_dt_strings(self):
"""Return the start of the device-tree string area
Returns:
Start offset of string area
"""
return check_err(fdt_off_dt_strings(self._fdt))
def off_mem_rsvmap(self):
"""Return the start of the memory reserve map
Returns:
Start offset of memory reserve map
"""
return check_err(fdt_off_mem_rsvmap(self._fdt))
def version(self):
"""Return the version of the device tree
Returns:
Version number of the device tree
"""
return check_err(fdt_version(self._fdt))
def last_comp_version(self):
"""Return the last compatible version of the device tree
Returns:
Last compatible version number of the device tree
"""
return check_err(fdt_last_comp_version(self._fdt))
def boot_cpuid_phys(self):
"""Return the physical boot CPU ID
Returns:
Physical boot CPU ID
"""
return check_err(fdt_boot_cpuid_phys(self._fdt))
def size_dt_strings(self):
"""Return the start of the device-tree string area
Returns:
Start offset of string area
"""
return check_err(fdt_size_dt_strings(self._fdt))
def size_dt_struct(self):
"""Return the start of the device-tree struct area
Returns:
Start offset of struct area
"""
return check_err(fdt_size_dt_struct(self._fdt))
def num_mem_rsv(self, quiet=()):
"""Return the number of memory reserve-map records
Returns:
Number of memory reserve-map records
"""
return check_err(fdt_num_mem_rsv(self._fdt), quiet)
def get_mem_rsv(self, index, quiet=()):
"""Return the indexed memory reserve-map record
Args:
index: Record to return (0=first)
Returns:
Number of memory reserve-map records
"""
return check_err(fdt_get_mem_rsv(self._fdt, index), quiet)
def subnode_offset(self, parentoffset, name, quiet=()):
"""Get the offset of a named subnode
Args:
parentoffset: Offset of the parent node to check
name: Name of the required subnode, e.g. 'subnode@1'
quiet: Errors to ignore (empty to raise on all errors)
Returns:
The node offset of the found node, if any
Raises
FdtException if there is no node with that name, or other error
"""
return check_err(fdt_subnode_offset(self._fdt, parentoffset, name),
quiet)
def path_offset(self, path, quiet=()):
"""Get the offset for a given path
Args:
path: Path to the required node, e.g. '/node@3/subnode@1'
quiet: Errors to ignore (empty to raise on all errors)
Returns:
Node offset
Raises
FdtException if the path is not valid or not found
"""
return check_err(fdt_path_offset(self._fdt, path), quiet)
def get_name(self, nodeoffset):
"""Get the name of a node
Args:
nodeoffset: Offset of node to check
Returns:
Node name
Raises:
FdtException on error (e.g. nodeoffset is invalid)
"""
return check_err_null(fdt_get_name(self._fdt, nodeoffset))[0]
def first_property_offset(self, nodeoffset, quiet=()):
"""Get the offset of the first property in a node offset
Args:
nodeoffset: Offset to the node to check
quiet: Errors to ignore (empty to raise on all errors)
Returns:
Offset of the first property
Raises
FdtException if the associated node has no properties, or some
other error occurred
"""
return check_err(fdt_first_property_offset(self._fdt, nodeoffset),
quiet)
def next_property_offset(self, prop_offset, quiet=()):
"""Get the next property in a node
Args:
prop_offset: Offset of the previous property
quiet: Errors to ignore (empty to raise on all errors)
Returns:
Offset of the next property
Raises:
FdtException if the associated node has no more properties, or
some other error occurred
"""
return check_err(fdt_next_property_offset(self._fdt, prop_offset),
quiet)
def get_property_by_offset(self, prop_offset, quiet=()):
"""Obtains a property that can be examined
Args:
prop_offset: Offset of property (e.g. from first_property_offset())
quiet: Errors to ignore (empty to raise on all errors)
Returns:
Property object, or None if not found
Raises:
FdtException on error (e.g. invalid prop_offset or device
tree format)
"""
pdata = check_err_null(
fdt_get_property_by_offset(self._fdt, prop_offset), quiet)
if isinstance(pdata, (int)):
return pdata
return Property(pdata[0], pdata[1])
def get_property(self, nodeoffset, prop_name, quiet=()):
"""Obtains a property by name
Args:
nodeoffset: Offset to the node to check
prop_name: Name of property to get
quiet: Errors to ignore (empty to raise on all errors)
Returns:
Property object, or None if not found
Raises:
FdtException on error (e.g. invalid prop_offset or device
tree format)
"""
pdata = check_err_null(
fdt_get_property(self._fdt, nodeoffset, prop_name), quiet)
if isinstance(pdata, (int)):
return pdata
return Property(pdata[0], pdata[1])
@staticmethod
def create_empty_tree(size, quiet=()):
"""Create an empty device tree ready for use
Args:
size: Size of device tree in bytes
Returns:
Fdt object containing the device tree
"""
data = bytearray(size)
err = check_err(fdt_create_empty_tree(data, size), quiet)
if err:
return err
return Fdt(data)
def open_into(self, size, quiet=()):
"""Move the device tree into a larger or smaller space
This creates a new device tree of size @size and moves the existing
device tree contents over to that. It can be used to create more space
in a device tree.
Args:
size: Required new size of device tree in bytes
"""
fdt = bytearray(size)
fdt[:len(self._fdt)] = self._fdt
err = check_err(fdt_open_into(self._fdt, fdt, size), quiet)
if err:
return err
self._fdt = fdt
def pack(self, quiet=()):
"""Pack the device tree to remove unused space
This adjusts the tree in place.
Args:
quiet: Errors to ignore (empty to raise on all errors)
Raises:
FdtException if any error occurs
"""
err = check_err(fdt_pack(self._fdt), quiet)
if err:
return err
del self._fdt[self.totalsize():]
return err
def getprop(self, nodeoffset, prop_name, quiet=()):
"""Get a property from a node
Args:
nodeoffset: Node offset containing property to get
prop_name: Name of property to get
quiet: Errors to ignore (empty to raise on all errors)
Returns:
Value of property as a string, or -ve error number
Raises:
FdtError if any error occurs (e.g. the property is not found)
"""
pdata = check_err_null(fdt_getprop(self._fdt, nodeoffset, prop_name),
quiet)
if isinstance(pdata, (int)):
return pdata
return str(pdata[0])
def getprop_obj(self, nodeoffset, prop_name, quiet=()):
"""Get a property from a node as a Property object
Args:
nodeoffset: Node offset containing property to get
prop_name: Name of property to get
quiet: Errors to ignore (empty to raise on all errors)
Returns:
Property object, or None if not found
Raises:
FdtError if any error occurs (e.g. the property is not found)
"""
pdata = check_err_null(fdt_getprop(self._fdt, nodeoffset, prop_name),
quiet)
if isinstance(pdata, (int)):
return None
return Property(prop_name, bytearray(pdata[0]))
def get_phandle(self, nodeoffset):
"""Get the phandle of a node
Args:
nodeoffset: Node offset to check
Returns:
phandle of node, or 0 if the node has no phandle or another error
occurs
"""
return fdt_get_phandle(self._fdt, nodeoffset)
def parent_offset(self, nodeoffset, quiet=()):
"""Get the offset of a node's parent
Args:
nodeoffset: Node offset to check
quiet: Errors to ignore (empty to raise on all errors)
Returns:
The offset of the parent node, if any
Raises:
FdtException if no parent found or other error occurs
"""
return check_err(fdt_parent_offset(self._fdt, nodeoffset), quiet)
def set_name(self, nodeoffset, name, quiet=()):
"""Set the name of a node
Args:
nodeoffset: Node offset of node to update
name: New node name
Returns:
Error code, or 0 if OK
Raises:
FdtException if no parent found or other error occurs
"""
return check_err(fdt_set_name(self._fdt, nodeoffset, name), quiet)
def setprop(self, nodeoffset, prop_name, val, quiet=()):
"""Set the value of a property
Args:
nodeoffset: Node offset containing the property to create/update
prop_name: Name of property
val: Value to write (string or bytearray)
quiet: Errors to ignore (empty to raise on all errors)
Returns:
Error code, or 0 if OK
Raises:
FdtException if no parent found or other error occurs
"""
return check_err(fdt_setprop(self._fdt, nodeoffset, prop_name, val,
len(val)), quiet)
def setprop_u32(self, nodeoffset, prop_name, val, quiet=()):
"""Set the value of a property
Args:
nodeoffset: Node offset containing the property to create/update
prop_name: Name of property
val: Value to write (integer)
quiet: Errors to ignore (empty to raise on all errors)
Returns:
Error code, or 0 if OK
Raises:
FdtException if no parent found or other error occurs
"""
return check_err(fdt_setprop_u32(self._fdt, nodeoffset, prop_name, val),
quiet)
def setprop_u64(self, nodeoffset, prop_name, val, quiet=()):
"""Set the value of a property
Args:
nodeoffset: Node offset containing the property to create/update
prop_name: Name of property
val: Value to write (integer)
quiet: Errors to ignore (empty to raise on all errors)
Returns:
Error code, or 0 if OK
Raises:
FdtException if no parent found or other error occurs
"""
return check_err(fdt_setprop_u64(self._fdt, nodeoffset, prop_name, val),
quiet)
def setprop_str(self, nodeoffset, prop_name, val, quiet=()):
"""Set the string value of a property
The property is set to the string, with a nul terminator added
Args:
nodeoffset: Node offset containing the property to create/update
prop_name: Name of property
val: Value to write (string without nul terminator)
quiet: Errors to ignore (empty to raise on all errors)
Returns:
Error code, or 0 if OK
Raises:
FdtException if no parent found or other error occurs
"""
val += '\0'
return check_err(fdt_setprop(self._fdt, nodeoffset, prop_name,
val, len(val)), quiet)
def delprop(self, nodeoffset, prop_name):
"""Delete a property from a node
Args:
nodeoffset: Node offset containing property to delete
prop_name: Name of property to delete
Raises:
FdtError if the property does not exist, or another error occurs
"""
return check_err(fdt_delprop(self._fdt, nodeoffset, prop_name))
def node_offset_by_phandle(self, phandle, quiet=()):
"""Get the offset of a node with the given phandle
Args:
phandle: Phandle to search for
quiet: Errors to ignore (empty to raise on all errors)
Returns:
The offset of node with that phandle, if any
Raises:
FdtException if no node found or other error occurs
"""
return check_err(fdt_node_offset_by_phandle(self._fdt, phandle), quiet)
def del_node(self, nodeoffset):
"""Delete a node
Args:
nodeoffset: Node offset containing property to delete
Raises:
FdtError if the node does not exist, or another error occurs
"""
return check_err(fdt_del_node(self._fdt, nodeoffset))
class Property(bytearray):
"""Holds a device tree property name and value.
This holds a copy of a property taken from the device tree. It does not
reference the device tree, so if anything changes in the device tree,
a Property object will remain valid.
Properties:
name: Property name
value: Property value as a bytearray
"""
def __init__(self, name, value):
bytearray.__init__(self, value)
self.name = name
def as_cell(self, fmt):
return struct.unpack('>' + fmt, self)[0]
def as_uint32(self):
return self.as_cell('L')
def as_int32(self):
return self.as_cell('l')
def as_uint64(self):
return self.as_cell('Q')
def as_int64(self):
return self.as_cell('q')
def as_str(self):
return self[:-1]
class FdtSw(object):
"""Software interface to create a device tree from scratch
The methods in this class work by adding to an existing 'partial' device
tree buffer of a fixed size created by instantiating this class. When the
tree is complete, call finish() to complete the device tree so that it can
be used.
Similarly with nodes, a new node is started with begin_node() and finished
with end_node().
The context manager functions can be used to make this a bit easier:
# First create the device tree with a node and property:
with FdtSw(small_size) as sw:
with sw.AddNode('node'):
sw.property_u32('reg', 2)
fdt = sw.AsFdt()
# Now we can use it as a real device tree
fdt.setprop_u32(0, 'reg', 3)
"""
def __init__(self, size, quiet=()):
fdtrw = bytearray(size)
err = check_err(fdt_create(fdtrw, size))
if err:
return err
self._fdtrw = fdtrw
def __enter__(self):
"""Contact manager to use to create a device tree via software"""
return self
def __exit__(self, type, value, traceback):
check_err(fdt_finish(self._fdtrw))
def AsFdt(self):
"""Convert a FdtSw into an Fdt so it can be accessed as normal
Note that finish() must be called before this function will work. If
you are using the context manager (see 'with' code in the FdtSw class
comment) then this will happen automatically.
Returns:
Fdt object allowing access to the newly created device tree
"""
return Fdt(self._fdtrw)
def resize(self, size, quiet=()):
"""Resize the buffer to accommodate a larger tree
Args:
size: New size of tree
quiet: Errors to ignore (empty to raise on all errors)
Raises:
FdtException if no node found or other error occurs
"""
fdt = bytearray(size)
fdt[:len(self._fdtrw)] = self._fdtrw
err = check_err(fdt_resize(self._fdtrw, fdt, size), quiet)
if err:
return err
self._fdtrw = fdt
def add_reservemap_entry(self, addr, size, quiet=()):
"""Add a new memory reserve map entry
Once finished adding, you must call finish_reservemap().
Args:
addr: 64-bit start address
size: 64-bit size
quiet: Errors to ignore (empty to raise on all errors)
Raises:
FdtException if no node found or other error occurs
"""
return check_err(fdt_add_reservemap_entry(self._fdtrw, addr, size),
quiet)
def finish_reservemap(self, quiet=()):
"""Indicate that there are no more reserve map entries to add
Args:
quiet: Errors to ignore (empty to raise on all errors)
Raises:
FdtException if no node found or other error occurs
"""
return check_err(fdt_finish_reservemap(self._fdtrw), quiet)
def begin_node(self, name, quiet=()):
"""Begin a new node
Use this before adding properties to the node. Then call end_node() to
finish it. You can also use the context manager as shown in the FdtSw
class comment.
Args:
name: Name of node to begin
quiet: Errors to ignore (empty to raise on all errors)
Raises:
FdtException if no node found or other error occurs
"""
return check_err(fdt_begin_node(self._fdtrw, name), quiet)
def property_string(self, name, string, quiet=()):
"""Add a property with a string value
The string will be nul-terminated when written to the device tree
Args:
name: Name of property to add
string: String value of property
quiet: Errors to ignore (empty to raise on all errors)
Raises:
FdtException if no node found or other error occurs
"""
return check_err(fdt_property_string(self._fdtrw, name, string), quiet)
def property_u32(self, name, val, quiet=()):
"""Add a property with a 32-bit value
Write a single-cell value to the device tree
Args:
name: Name of property to add
val: Value of property
quiet: Errors to ignore (empty to raise on all errors)
Raises:
FdtException if no node found or other error occurs
"""
return check_err(fdt_property_u32(self._fdtrw, name, val), quiet)
def property_u64(self, name, val, quiet=()):
"""Add a property with a 64-bit value
Write a double-cell value to the device tree in big-endian format
Args:
name: Name of property to add
val: Value of property
quiet: Errors to ignore (empty to raise on all errors)
Raises:
FdtException if no node found or other error occurs
"""
return check_err(fdt_property_u64(self._fdtrw, name, val), quiet)
def property_cell(self, name, val, quiet=()):
"""Add a property with a single-cell value
Write a single-cell value to the device tree
Args:
name: Name of property to add
val: Value of property
quiet: Errors to ignore (empty to raise on all errors)
Raises:
FdtException if no node found or other error occurs
"""
return check_err(fdt_property_cell(self._fdtrw, name, val), quiet)
def property(self, name, val, quiet=()):
"""Add a property
Write a new property with the given value to the device tree. The value
is taken as is and is not nul-terminated
Args:
name: Name of property to add
val: Value of property
quiet: Errors to ignore (empty to raise on all errors)
Raises:
FdtException if no node found or other error occurs
"""
return check_err(_fdt_property(self._fdtrw, name, val, len(val)), quiet)
def end_node(self, quiet=()):
"""End a node
Use this after adding properties to a node to close it off. You can also
use the context manager as shown in the FdtSw class comment.
Args:
quiet: Errors to ignore (empty to raise on all errors)
Raises:
FdtException if no node found or other error occurs
"""
return check_err(fdt_end_node(self._fdtrw), quiet)
def finish(self, quiet=()):
"""Finish writing the device tree
This closes off the device tree ready for use
Args:
quiet: Errors to ignore (empty to raise on all errors)
Raises:
FdtException if no node found or other error occurs
"""
return check_err(fdt_finish(self._fdtrw), quiet)
def AddNode(self, name):
"""Create a new context for adding a node
When used in a 'with' clause this starts a new node and finishes it
afterward.
Args:
name: Name of node to add
"""
return NodeAdder(self._fdtrw, name)
class NodeAdder():
"""Class to provide a node context
This allows you to add nodes in a more natural way:
with fdtsw.AddNode('name'):
fdtsw.property_string('test', 'value')
The node is automatically completed with a call to end_node() when the
context exits.
"""
def __init__(self, fdt, name):
self._fdt = fdt
self._name = name
def __enter__(self):
check_err(fdt_begin_node(self._fdt, self._name))
def __exit__(self, type, value, traceback):
check_err(fdt_end_node(self._fdt))
%}
%rename(fdt_property) fdt_property_func;
typedef int fdt32_t;
%include "libfdt/fdt.h"
%include "typemaps.i"
/* Most functions don't change the device tree, so use a const void * */
%typemap(in) (const void *)(const void *fdt) {
if (!PyByteArray_Check($input)) {
SWIG_exception_fail(SWIG_TypeError, "in method '" "$symname"
"', argument " "$argnum"" of type '" "$type""'");
}
$1 = (void *)PyByteArray_AsString($input);
fdt = $1;
fdt = fdt; /* avoid unused variable warning */
}
/* Some functions do change the device tree, so use void * */
%typemap(in) (void *)(const void *fdt) {
if (!PyByteArray_Check($input)) {
SWIG_exception_fail(SWIG_TypeError, "in method '" "$symname"
"', argument " "$argnum"" of type '" "$type""'");
}
$1 = PyByteArray_AsString($input);
fdt = $1;
fdt = fdt; /* avoid unused variable warning */
}
/* typemap used for fdt_get_property_by_offset() */
%typemap(out) (struct fdt_property *) {
PyObject *buff;
if ($1) {
resultobj = PyString_FromString(
fdt_string(fdt1, fdt32_to_cpu($1->nameoff)));
buff = PyByteArray_FromStringAndSize(
(const char *)($1 + 1), fdt32_to_cpu($1->len));
resultobj = SWIG_Python_AppendOutput(resultobj, buff);
}
}
%apply int *OUTPUT { int *lenp };
/* typemap used for fdt_getprop() */
%typemap(out) (const void *) {
if (!$1)
$result = Py_None;
else
$result = Py_BuildValue("s#", $1, *arg4);
}
/* typemap used for fdt_setprop() */
%typemap(in) (const void *val) {
$1 = PyString_AsString($input); /* char *str */
}
/* typemap used for fdt_add_reservemap_entry() */
%typemap(in) uint64_t {
$1 = PyLong_AsUnsignedLong($input);
}
/* typemaps used for fdt_next_node() */
%typemap(in, numinputs=1) int *depth (int depth) {
depth = (int) PyInt_AsLong($input);
$1 = &depth;
}
%typemap(argout) int *depth {
PyObject *val = Py_BuildValue("i", *arg$argnum);
resultobj = SWIG_Python_AppendOutput(resultobj, val);
}
%apply int *depth { int *depth };
/* typemaps for fdt_get_mem_rsv */
%typemap(in, numinputs=0) uint64_t * (uint64_t temp) {
$1 = &temp;
}
%typemap(argout) uint64_t * {
PyObject *val = PyLong_FromUnsignedLong(*arg$argnum);
if (!result) {
if (PyTuple_GET_SIZE(resultobj) == 0)
resultobj = val;
else
resultobj = SWIG_Python_AppendOutput(resultobj, val);
}
}
/* We have both struct fdt_property and a function fdt_property() */
%warnfilter(302) fdt_property;
/* These are macros in the header so have to be redefined here */
int fdt_magic(const void *fdt);
int fdt_totalsize(const void *fdt);
int fdt_off_dt_struct(const void *fdt);
int fdt_off_dt_strings(const void *fdt);
int fdt_off_mem_rsvmap(const void *fdt);
int fdt_version(const void *fdt);
int fdt_last_comp_version(const void *fdt);
int fdt_boot_cpuid_phys(const void *fdt);
int fdt_size_dt_strings(const void *fdt);
int fdt_size_dt_struct(const void *fdt);
int fdt_property_string(void *fdt, const char *name, const char *val);
int fdt_property_cell(void *fdt, const char *name, uint32_t val);
/*
* This function has a stub since the name fdt_property is used for both a
* function and a struct, which confuses SWIG.
*/
int _fdt_property(void *fdt, const char *name, const char *val, int len);
%include <../libfdt/libfdt.h>