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# SPDX-License-Identifier: GPL-2.0+
# Copyright (c) 2016 Google, Inc
# Written by Simon Glass <sjg@chromium.org>
#
# Class for an image, the output of binman
#
from __future__ import print_function
from collections import OrderedDict
from operator import attrgetter
import re
import sys
import fdt_util
import bsection
import tools
class Image:
"""A Image, representing an output from binman
An image is comprised of a collection of entries each containing binary
data. The image size must be large enough to hold all of this data.
This class implements the various operations needed for images.
Atrtributes:
_node: Node object that contains the image definition in device tree
_name: Image name
_size: Image size in bytes, or None if not known yet
_filename: Output filename for image
_sections: Sections present in this image (may be one or more)
Args:
test: True if this is being called from a test of Images. This this case
there is no device tree defining the structure of the section, so
we create a section manually.
"""
def __init__(self, name, node, test=False):
self._node = node
self._name = name
self._size = None
self._filename = '%s.bin' % self._name
if test:
self._section = bsection.Section('main-section', self._node, True)
else:
self._ReadNode()
def _ReadNode(self):
"""Read properties from the image node"""
self._size = fdt_util.GetInt(self._node, 'size')
filename = fdt_util.GetString(self._node, 'filename')
if filename:
self._filename = filename
self._section = bsection.Section('main-section', self._node)
def GetEntryContents(self):
"""Call ObtainContents() for the section
"""
self._section.GetEntryContents()
def GetEntryPositions(self):
"""Handle entries that want to set the position/size of other entries
This calls each entry's GetPositions() method. If it returns a list
of entries to update, it updates them.
"""
self._section.GetEntryPositions()
def PackEntries(self):
"""Pack all entries into the image"""
self._section.PackEntries()
def CheckSize(self):
"""Check that the image contents does not exceed its size, etc."""
self._size = self._section.CheckSize()
def CheckEntries(self):
"""Check that entries do not overlap or extend outside the image"""
self._section.CheckEntries()
def ProcessEntryContents(self):
"""Call the ProcessContents() method for each entry
This is intended to adjust the contents as needed by the entry type.
"""
self._section.ProcessEntryContents()
def WriteSymbols(self):
"""Write symbol values into binary files for access at run time"""
self._section.WriteSymbols()
def BuildImage(self):
"""Write the image to a file"""
fname = tools.GetOutputFilename(self._filename)
with open(fname, 'wb') as fd:
self._section.BuildSection(fd, 0)
def GetEntries(self):
return self._section.GetEntries()
def WriteMap(self):
"""Write a map of the image to a .map file"""
filename = '%s.map' % self._name
fname = tools.GetOutputFilename(filename)
with open(fname, 'w') as fd:
print('%8s %8s %s' % ('Position', 'Size', 'Name'), file=fd)
self._section.WriteMap(fd, 0)
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