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# 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):
"""Get the contents of this entry
Returns:
bytes content of the entry
"""
# Join up all the data
self.Info('Getting content')
data = b''
for entry_phandle in self.content:
entry_data = self.section.GetContentsByPhandle(entry_phandle, self)
if entry_data is None:
# 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()
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()
return self.ProcessContentsUpdate(data)
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