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dtc/pylibfdt/libfdt.i

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// SPDX-License-Identifier: (GPL-2.0-or-later 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_stub(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,)
QUIET_NOSPACE = (NOSPACE,)
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 isinstance(val, int) and 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 FdtRo(object):
"""Class for a read-only device-tree
This is a base class used by FdtRw (read-write access) and FdtSw
(sequential-write access). It implements read-only access to the
device tree.
Here are the three classes and when you should use them:
FdtRo - read-only access to an existing FDT
FdtRw - read-write access to an existing FDT (most common case)
FdtSw - for creating a new FDT, as well as allowing read-only access
"""
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: The depth of the node at nodeoffset. This is used to
calculate the depth of the returned node
quiet: Errors to ignore (empty to raise on all errors)
Returns:
Typle:
Offset of the next node, if any, else a -ve error
Depth of the returned node, if any, else undefined
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)
def totalsize(self):
"""Return the total size of the device tree
Returns:
Total tree size in bytes
"""
return 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 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 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 fdt_off_mem_rsvmap(self._fdt)
def version(self):
"""Return the version of the device tree
Returns:
Version number of the device tree
"""
return 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 fdt_last_comp_version(self._fdt)
def boot_cpuid_phys(self):
"""Return the physical boot CPU ID
Returns:
Physical boot CPU ID
"""
return 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 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 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 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 Property object (which can be used as a
bytearray/string), or -ve error number. On failure, returns an
integer error
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 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 get_alias(self, name):
"""Get the full path referenced by a given alias
Args:
name: name of the alias to lookup
Returns:
Full path to the node for the alias named 'name', if it exists
None, if the given alias or the /aliases node does not exist
"""
return fdt_get_alias(self._fdt, name)
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 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)
class Fdt(FdtRo):
"""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):
FdtRo.__init__(self, data)
@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 resize(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. Note that the Fdt object remains the same, but it
now has a new bytearray holding the contents.
Args:
size: Required new size of device tree in bytes
"""
fdt = bytearray(size)
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)
Returns:
Error code, or 0 if OK
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 set_name(self, nodeoffset, name, quiet=()):
"""Set the name of a node
Args:
nodeoffset: Node offset of node to update
name: New node name (string without \0)
Returns:
Error code, or 0 if OK
Raises:
FdtException if no parent found or other error occurs
"""
if chr(0) in name:
raise ValueError('Property contains embedded nul characters')
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). Unicode is
supposed by encoding to UTF-8
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 = val.encode('utf-8') + b'\0'
return check_err(fdt_setprop(self._fdt, nodeoffset, prop_name,
val, len(val)), quiet)
def delprop(self, nodeoffset, prop_name, quiet=()):
"""Delete a property from a node
Args:
nodeoffset: Node offset containing property to delete
prop_name: Name of property to delete
quiet: Errors to ignore (empty to raise on all errors)
Returns:
Error code, or 0 if OK
Raises:
FdtError if the property does not exist, or another error occurs
"""
return check_err(fdt_delprop(self._fdt, nodeoffset, prop_name), quiet)
def add_subnode(self, parentoffset, name, quiet=()):
"""Add a new subnode to a node
Args:
parentoffset: Parent offset to add the subnode to
name: Name of node to add
Returns:
offset of the node created, or negative error code on failure
Raises:
FdtError if there is not enough space, or another error occurs
"""
return check_err(fdt_add_subnode(self._fdt, parentoffset, name), quiet)
def del_node(self, nodeoffset, quiet=()):
"""Delete a node
Args:
nodeoffset: Offset of node to delete
Returns:
Error code, or 0 if OK
Raises:
FdtError if an error occurs
"""
return check_err(fdt_del_node(self._fdt, nodeoffset), quiet)
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):
"""Unicode is supported by decoding from UTF-8"""
if self[-1] != 0:
raise ValueError('Property lacks nul termination')
if 0 in self[:-1]:
raise ValueError('Property contains embedded nul characters')
return self[:-1].decode('utf-8')
class FdtSw(FdtRo):
"""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 as_fdt() to obtain a device tree ready to 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:
sw = FdtSw()
sw.finish_reservemap()
with sw.add_node(''):
with sw.add_node('node'):
sw.property_u32('reg', 2)
fdt = sw.as_fdt()
# Now we can use it as a real device tree
fdt.setprop_u32(0, 'reg', 3)
The size hint provides a starting size for the space to be used by the
device tree. This will be increased automatically as needed as new items
are added to the tree.
"""
INC_SIZE = 1024 # Expand size by this much when out of space
def __init__(self, size_hint=None):
"""Create a new FdtSw object
Args:
size_hint: A hint as to the initial size to use
Raises:
ValueError if size_hint is negative
Returns:
FdtSw object on success, else integer error code (if not raising)
"""
if not size_hint:
size_hint = self.INC_SIZE
fdtsw = bytearray(size_hint)
err = check_err(fdt_create(fdtsw, size_hint))
if err:
return err
self._fdt = fdtsw
def as_fdt(self):
"""Convert a FdtSw into an Fdt so it can be accessed as normal
Creates a new Fdt object from the work-in-progress device tree. This
does not call fdt_finish() on the current object, so it is possible to
add more nodes/properties and call as_fdt() again to get an updated
tree.
Returns:
Fdt object allowing access to the newly created device tree
"""
fdtsw = bytearray(self._fdt)
check_err(fdt_finish(fdtsw))
return Fdt(fdtsw)
def check_space(self, val):
"""Check if we need to add more space to the FDT
This should be called with the error code from an operation. If this is
-NOSPACE then the FDT will be expanded to have more space, and True will
be returned, indicating that the operation needs to be tried again.
Args:
val: Return value from the operation that was attempted
Returns:
True if the operation must be retried, else False
"""
if check_err(val, QUIET_NOSPACE) < 0:
self.resize(len(self._fdt) + self.INC_SIZE)
return True
return False
def resize(self, size):
"""Resize the buffer to accommodate a larger tree
Args:
size: New size of tree
Raises:
FdtException on any error
"""
fdt = bytearray(size)
err = check_err(fdt_resize(self._fdt, fdt, size))
self._fdt = fdt
def add_reservemap_entry(self, addr, size):
"""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
Raises:
FdtException on any error
"""
while self.check_space(fdt_add_reservemap_entry(self._fdt, addr,
size)):
pass
def finish_reservemap(self):
"""Indicate that there are no more reserve map entries to add
Raises:
FdtException on any error
"""
while self.check_space(fdt_finish_reservemap(self._fdt)):
pass
def begin_node(self, name):
"""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
Raises:
FdtException on any error
"""
while self.check_space(fdt_begin_node(self._fdt, name)):
pass
def property_string(self, name, string):
"""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
Raises:
FdtException on any error
"""
while self.check_space(fdt_property_string(self._fdt, name, string)):
pass
def property_u32(self, name, val):
"""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
Raises:
FdtException on any error
"""
while self.check_space(fdt_property_u32(self._fdt, name, val)):
pass
def property_u64(self, name, val):
"""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
Raises:
FdtException on any error
"""
while self.check_space(fdt_property_u64(self._fdt, name, val)):
pass
def property_cell(self, name, val):
"""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 on any error
"""
while self.check_space(fdt_property_cell(self._fdt, name, val)):
pass
def property(self, name, val):
"""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 on any error
"""
while self.check_space(fdt_property_stub(self._fdt, name, val,
len(val))):
pass
def end_node(self):
"""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 on any error
"""
while self.check_space(fdt_end_node(self._fdt)):
pass
def add_node(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, name)
class NodeAdder():
"""Class to provide a node context
This allows you to add nodes in a more natural way:
with fdtsw.add_node('name'):
fdtsw.property_string('test', 'value')
The node is automatically completed with a call to end_node() when the
context exits.
"""
def __init__(self, fdtsw, name):
self._fdt = fdtsw
self._name = name
def __enter__(self):
self._fdt.begin_node(self._name)
def __exit__(self, type, value, traceback):
self._fdt.end_node()
%}
%rename(fdt_property) fdt_property_func;
/*
* fdt32_t is a big-endian 32-bit value defined to uint32_t in libfdt_env.h
* so use the same type here.
*/
typedef uint32_t fdt32_t;
%include "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
%#if PY_VERSION_HEX >= 0x03000000
$result = Py_BuildValue("y#", $1, *arg4);
%#else
$result = Py_BuildValue("s#", $1, *arg4);
%#endif
}
/* typemap used for fdt_setprop() */
%typemap(in) (const void *val) {
%#if PY_VERSION_HEX >= 0x03000000
if (!PyBytes_Check($input)) {
SWIG_exception_fail(SWIG_TypeError, "bytes expected in method '" "$symname"
"', argument " "$argnum"" of type '" "$type""'");
}
$1 = PyBytes_AsString($input);
%#else
$1 = PyString_AsString($input); /* char *str */
%#endif
}
/* 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) {
$1 = &temp;
}
%typemap(argout) uint64_t * {
PyObject *val = PyLong_FromUnsignedLongLong(*arg$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 */
uint32_t fdt_magic(const void *fdt);
uint32_t fdt_totalsize(const void *fdt);
uint32_t fdt_off_dt_struct(const void *fdt);
uint32_t fdt_off_dt_strings(const void *fdt);
uint32_t fdt_off_mem_rsvmap(const void *fdt);
uint32_t fdt_version(const void *fdt);
uint32_t fdt_last_comp_version(const void *fdt);
uint32_t fdt_boot_cpuid_phys(const void *fdt);
uint32_t fdt_size_dt_strings(const void *fdt);
uint32_t 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_stub(void *fdt, const char *name, const char *val, int len);
%include <libfdt.h>