blob: 1625575fe98af32a0e88c9b0ab2dc7e189f71937 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
# SPDX-License-Identifier: GPL-2.0+
# Copyright 2021 Google LLC
# Written by Simon Glass <sjg@chromium.org>
#
# Support for a collection of entries from other parts of an image
from collections import OrderedDict
import os
from binman.entry import Entry
from dtoc import fdt_util
class Entry_collection(Entry):
"""An entry which contains a collection of other entries
Properties / Entry arguments:
- content: List of phandles to entries to include
This allows reusing the contents of other entries. The contents of the
listed entries are combined to form this entry. This serves as a useful
base class for entry types which need to process data from elsewhere in
the image, not necessarily child entries.
"""
def __init__(self, section, etype, node):
super().__init__(section, etype, node)
self.content = fdt_util.GetPhandleList(self._node, 'content')
if not self.content:
self.Raise("Collection must have a 'content' property")
def GetContents(self, required):
"""Get the contents of this entry
Args:
required: True if the data must be present, False if it is OK to
return None
Returns:
bytes content of the entry
"""
# Join up all the data
self.Info('Getting contents, required=%s' % required)
data = b''
for entry_phandle in self.content:
entry_data = self.section.GetContentsByPhandle(entry_phandle, self,
required)
if not required and entry_data is None:
self.Info('Contents not available yet')
# Data not available yet
return None
data += entry_data
self.Info('Returning contents size %x' % len(data))
return data
def ObtainContents(self):
data = self.GetContents(False)
if data is None:
return False
self.SetContents(data)
return True
def ProcessContents(self):
# The blob may have changed due to WriteSymbols()
data = self.GetContents(True)
return self.ProcessContentsUpdate(data)
|