1# SPDX-License-Identifier: GPL-2.0+ 2# Copyright (c) 2018 Google, Inc 3# Written by Simon Glass <sjg@chromium.org> 4# 5# Entry-type module for U-Boot device tree files 6# 7 8import state 9 10from entry import Entry 11from blob import Entry_blob 12 13class Entry_blob_dtb(Entry_blob): 14 """A blob that holds a device tree 15 16 This is a blob containing a device tree. The contents of the blob are 17 obtained from the list of available device-tree files, managed by the 18 'state' module. 19 """ 20 def __init__(self, section, etype, node): 21 Entry_blob.__init__(self, section, etype, node) 22 23 def ObtainContents(self): 24 """Get the device-tree from the list held by the 'state' module""" 25 self._filename = self.GetDefaultFilename() 26 self._pathname, data = state.GetFdtContents(self._filename) 27 self.SetContents(data) 28 return True 29 30 def ProcessContents(self): 31 """Re-read the DTB contents so that we get any calculated properties""" 32 _, data = state.GetFdtContents(self._filename) 33 self.SetContents(data) 34