774 lines
27 KiB
Python
774 lines
27 KiB
Python
# SPDX-License-Identifier: GPL-2.0+
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# Copyright (c) 2016 Google, Inc
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# Written by Simon Glass <sjg@chromium.org>
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#
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# Creates binary images from input files controlled by a description
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#
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from collections import OrderedDict
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import glob
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import os
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import pkg_resources
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import re
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import sys
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from patman import tools
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from binman import bintool
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from binman import cbfs_util
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from patman import command
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from binman import elf
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from binman import entry
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from patman import tout
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# These are imported if needed since they import libfdt
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state = None
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Image = None
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# List of images we plan to create
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# Make this global so that it can be referenced from tests
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images = OrderedDict()
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# Help text for each type of missing blob, dict:
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# key: Value of the entry's 'missing-msg' or entry name
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# value: Text for the help
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missing_blob_help = {}
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def _ReadImageDesc(binman_node, use_expanded):
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"""Read the image descriptions from the /binman node
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This normally produces a single Image object called 'image'. But if
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multiple images are present, they will all be returned.
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Args:
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binman_node: Node object of the /binman node
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use_expanded: True if the FDT will be updated with the entry information
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Returns:
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OrderedDict of Image objects, each of which describes an image
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"""
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# For Image()
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# pylint: disable=E1102
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images = OrderedDict()
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if 'multiple-images' in binman_node.props:
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for node in binman_node.subnodes:
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images[node.name] = Image(node.name, node,
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use_expanded=use_expanded)
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else:
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images['image'] = Image('image', binman_node, use_expanded=use_expanded)
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return images
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def _FindBinmanNode(dtb):
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"""Find the 'binman' node in the device tree
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Args:
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dtb: Fdt object to scan
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Returns:
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Node object of /binman node, or None if not found
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"""
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for node in dtb.GetRoot().subnodes:
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if node.name == 'binman':
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return node
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return None
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def _ReadMissingBlobHelp():
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"""Read the missing-blob-help file
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This file containins help messages explaining what to do when external blobs
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are missing.
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Returns:
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Dict:
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key: Message tag (str)
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value: Message text (str)
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"""
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def _FinishTag(tag, msg, result):
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if tag:
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result[tag] = msg.rstrip()
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tag = None
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msg = ''
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return tag, msg
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my_data = pkg_resources.resource_string(__name__, 'missing-blob-help')
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re_tag = re.compile('^([-a-z0-9]+):$')
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result = {}
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tag = None
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msg = ''
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for line in my_data.decode('utf-8').splitlines():
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if not line.startswith('#'):
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m_tag = re_tag.match(line)
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if m_tag:
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_, msg = _FinishTag(tag, msg, result)
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tag = m_tag.group(1)
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elif tag:
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msg += line + '\n'
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_FinishTag(tag, msg, result)
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return result
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def _ShowBlobHelp(path, text):
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tout.warning('\n%s:' % path)
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for line in text.splitlines():
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tout.warning(' %s' % line)
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def _ShowHelpForMissingBlobs(missing_list):
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"""Show help for each missing blob to help the user take action
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Args:
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missing_list: List of Entry objects to show help for
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"""
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global missing_blob_help
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if not missing_blob_help:
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missing_blob_help = _ReadMissingBlobHelp()
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for entry in missing_list:
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tags = entry.GetHelpTags()
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# Show the first match help message
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for tag in tags:
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if tag in missing_blob_help:
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_ShowBlobHelp(entry._node.path, missing_blob_help[tag])
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break
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def GetEntryModules(include_testing=True):
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"""Get a set of entry class implementations
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Returns:
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Set of paths to entry class filenames
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"""
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glob_list = pkg_resources.resource_listdir(__name__, 'etype')
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glob_list = [fname for fname in glob_list if fname.endswith('.py')]
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return set([os.path.splitext(os.path.basename(item))[0]
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for item in glob_list
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if include_testing or '_testing' not in item])
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def WriteEntryDocs(modules, test_missing=None):
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"""Write out documentation for all entries
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Args:
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modules: List of Module objects to get docs for
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test_missing: Used for testing only, to force an entry's documentation
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to show as missing even if it is present. Should be set to None in
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normal use.
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"""
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from binman.entry import Entry
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Entry.WriteDocs(modules, test_missing)
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def write_bintool_docs(modules, test_missing=None):
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"""Write out documentation for all bintools
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Args:
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modules: List of Module objects to get docs for
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test_missing: Used for testing only, to force an entry's documentation
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to show as missing even if it is present. Should be set to None in
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normal use.
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"""
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bintool.Bintool.WriteDocs(modules, test_missing)
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def ListEntries(image_fname, entry_paths):
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"""List the entries in an image
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This decodes the supplied image and displays a table of entries from that
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image, preceded by a header.
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Args:
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image_fname: Image filename to process
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entry_paths: List of wildcarded paths (e.g. ['*dtb*', 'u-boot*',
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'section/u-boot'])
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"""
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image = Image.FromFile(image_fname)
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entries, lines, widths = image.GetListEntries(entry_paths)
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num_columns = len(widths)
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for linenum, line in enumerate(lines):
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if linenum == 1:
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# Print header line
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print('-' * (sum(widths) + num_columns * 2))
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out = ''
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for i, item in enumerate(line):
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width = -widths[i]
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if item.startswith('>'):
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width = -width
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item = item[1:]
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txt = '%*s ' % (width, item)
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out += txt
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print(out.rstrip())
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def ReadEntry(image_fname, entry_path, decomp=True):
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"""Extract an entry from an image
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This extracts the data from a particular entry in an image
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Args:
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image_fname: Image filename to process
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entry_path: Path to entry to extract
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decomp: True to return uncompressed data, if the data is compress
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False to return the raw data
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Returns:
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data extracted from the entry
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"""
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global Image
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from binman.image import Image
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image = Image.FromFile(image_fname)
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image.CollectBintools()
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entry = image.FindEntryPath(entry_path)
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return entry.ReadData(decomp)
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def ShowAltFormats(image):
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"""Show alternative formats available for entries in the image
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This shows a list of formats available.
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Args:
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image (Image): Image to check
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"""
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alt_formats = {}
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image.CheckAltFormats(alt_formats)
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print('%-10s %-20s %s' % ('Flag (-F)', 'Entry type', 'Description'))
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for name, val in alt_formats.items():
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entry, helptext = val
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print('%-10s %-20s %s' % (name, entry.etype, helptext))
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def ExtractEntries(image_fname, output_fname, outdir, entry_paths,
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decomp=True, alt_format=None):
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"""Extract the data from one or more entries and write it to files
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Args:
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image_fname: Image filename to process
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output_fname: Single output filename to use if extracting one file, None
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otherwise
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outdir: Output directory to use (for any number of files), else None
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entry_paths: List of entry paths to extract
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decomp: True to decompress the entry data
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Returns:
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List of EntryInfo records that were written
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"""
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image = Image.FromFile(image_fname)
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image.CollectBintools()
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if alt_format == 'list':
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ShowAltFormats(image)
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return
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# Output an entry to a single file, as a special case
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if output_fname:
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if not entry_paths:
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raise ValueError('Must specify an entry path to write with -f')
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if len(entry_paths) != 1:
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raise ValueError('Must specify exactly one entry path to write with -f')
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entry = image.FindEntryPath(entry_paths[0])
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data = entry.ReadData(decomp, alt_format)
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tools.write_file(output_fname, data)
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tout.notice("Wrote %#x bytes to file '%s'" % (len(data), output_fname))
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return
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# Otherwise we will output to a path given by the entry path of each entry.
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# This means that entries will appear in subdirectories if they are part of
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# a sub-section.
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einfos = image.GetListEntries(entry_paths)[0]
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tout.notice('%d entries match and will be written' % len(einfos))
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for einfo in einfos:
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entry = einfo.entry
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data = entry.ReadData(decomp, alt_format)
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path = entry.GetPath()[1:]
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fname = os.path.join(outdir, path)
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# If this entry has children, create a directory for it and put its
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# data in a file called 'root' in that directory
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if entry.GetEntries():
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if fname and not os.path.exists(fname):
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os.makedirs(fname)
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fname = os.path.join(fname, 'root')
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tout.notice("Write entry '%s' size %x to '%s'" %
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(entry.GetPath(), len(data), fname))
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tools.write_file(fname, data)
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return einfos
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def BeforeReplace(image, allow_resize):
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"""Handle getting an image ready for replacing entries in it
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Args:
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image: Image to prepare
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"""
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state.PrepareFromLoadedData(image)
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image.LoadData()
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image.CollectBintools()
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# If repacking, drop the old offset/size values except for the original
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# ones, so we are only left with the constraints.
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if image.allow_repack and allow_resize:
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image.ResetForPack()
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def ReplaceOneEntry(image, entry, data, do_compress, allow_resize):
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"""Handle replacing a single entry an an image
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Args:
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image: Image to update
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entry: Entry to write
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data: Data to replace with
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do_compress: True to compress the data if needed, False if data is
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already compressed so should be used as is
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allow_resize: True to allow entries to change size (this does a re-pack
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of the entries), False to raise an exception
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"""
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if not entry.WriteData(data, do_compress):
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if not image.allow_repack:
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entry.Raise('Entry data size does not match, but allow-repack is not present for this image')
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if not allow_resize:
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entry.Raise('Entry data size does not match, but resize is disabled')
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def AfterReplace(image, allow_resize, write_map):
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"""Handle write out an image after replacing entries in it
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Args:
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image: Image to write
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allow_resize: True to allow entries to change size (this does a re-pack
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of the entries), False to raise an exception
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write_map: True to write a map file
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"""
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tout.info('Processing image')
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ProcessImage(image, update_fdt=True, write_map=write_map,
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get_contents=False, allow_resize=allow_resize)
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def WriteEntryToImage(image, entry, data, do_compress=True, allow_resize=True,
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write_map=False):
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BeforeReplace(image, allow_resize)
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tout.info('Writing data to %s' % entry.GetPath())
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ReplaceOneEntry(image, entry, data, do_compress, allow_resize)
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AfterReplace(image, allow_resize=allow_resize, write_map=write_map)
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def WriteEntry(image_fname, entry_path, data, do_compress=True,
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allow_resize=True, write_map=False):
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"""Replace an entry in an image
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This replaces the data in a particular entry in an image. This size of the
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new data must match the size of the old data unless allow_resize is True.
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Args:
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image_fname: Image filename to process
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entry_path: Path to entry to extract
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data: Data to replace with
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do_compress: True to compress the data if needed, False if data is
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already compressed so should be used as is
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allow_resize: True to allow entries to change size (this does a re-pack
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of the entries), False to raise an exception
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write_map: True to write a map file
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Returns:
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Image object that was updated
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"""
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tout.info("Write entry '%s', file '%s'" % (entry_path, image_fname))
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image = Image.FromFile(image_fname)
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image.CollectBintools()
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entry = image.FindEntryPath(entry_path)
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WriteEntryToImage(image, entry, data, do_compress=do_compress,
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allow_resize=allow_resize, write_map=write_map)
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return image
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def ReplaceEntries(image_fname, input_fname, indir, entry_paths,
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do_compress=True, allow_resize=True, write_map=False):
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"""Replace the data from one or more entries from input files
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Args:
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image_fname: Image filename to process
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input_fname: Single input filename to use if replacing one file, None
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otherwise
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indir: Input directory to use (for any number of files), else None
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entry_paths: List of entry paths to replace
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do_compress: True if the input data is uncompressed and may need to be
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compressed if the entry requires it, False if the data is already
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compressed.
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write_map: True to write a map file
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Returns:
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List of EntryInfo records that were written
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"""
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image_fname = os.path.abspath(image_fname)
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image = Image.FromFile(image_fname)
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# Replace an entry from a single file, as a special case
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if input_fname:
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if not entry_paths:
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raise ValueError('Must specify an entry path to read with -f')
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if len(entry_paths) != 1:
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raise ValueError('Must specify exactly one entry path to write with -f')
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entry = image.FindEntryPath(entry_paths[0])
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data = tools.read_file(input_fname)
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tout.notice("Read %#x bytes from file '%s'" % (len(data), input_fname))
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WriteEntryToImage(image, entry, data, do_compress=do_compress,
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allow_resize=allow_resize, write_map=write_map)
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return
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# Otherwise we will input from a path given by the entry path of each entry.
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# This means that files must appear in subdirectories if they are part of
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# a sub-section.
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einfos = image.GetListEntries(entry_paths)[0]
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tout.notice("Replacing %d matching entries in image '%s'" %
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(len(einfos), image_fname))
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BeforeReplace(image, allow_resize)
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for einfo in einfos:
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entry = einfo.entry
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if entry.GetEntries():
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tout.info("Skipping section entry '%s'" % entry.GetPath())
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continue
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path = entry.GetPath()[1:]
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fname = os.path.join(indir, path)
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if os.path.exists(fname):
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tout.notice("Write entry '%s' from file '%s'" %
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(entry.GetPath(), fname))
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data = tools.read_file(fname)
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ReplaceOneEntry(image, entry, data, do_compress, allow_resize)
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else:
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tout.warning("Skipping entry '%s' from missing file '%s'" %
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(entry.GetPath(), fname))
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AfterReplace(image, allow_resize=allow_resize, write_map=write_map)
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return image
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def PrepareImagesAndDtbs(dtb_fname, select_images, update_fdt, use_expanded):
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"""Prepare the images to be processed and select the device tree
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This function:
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- reads in the device tree
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- finds and scans the binman node to create all entries
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- selects which images to build
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- Updates the device tress with placeholder properties for offset,
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image-pos, etc.
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Args:
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dtb_fname: Filename of the device tree file to use (.dts or .dtb)
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selected_images: List of images to output, or None for all
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update_fdt: True to update the FDT wth entry offsets, etc.
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use_expanded: True to use expanded versions of entries, if available.
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So if 'u-boot' is called for, we use 'u-boot-expanded' instead. This
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is needed if update_fdt is True (although tests may disable it)
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Returns:
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OrderedDict of images:
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key: Image name (str)
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value: Image object
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"""
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# Import these here in case libfdt.py is not available, in which case
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# the above help option still works.
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from dtoc import fdt
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from dtoc import fdt_util
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global images
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# Get the device tree ready by compiling it and copying the compiled
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# output into a file in our output directly. Then scan it for use
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# in binman.
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dtb_fname = fdt_util.EnsureCompiled(dtb_fname)
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fname = tools.get_output_filename('u-boot.dtb.out')
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tools.write_file(fname, tools.read_file(dtb_fname))
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dtb = fdt.FdtScan(fname)
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node = _FindBinmanNode(dtb)
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if not node:
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raise ValueError("Device tree '%s' does not have a 'binman' "
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"node" % dtb_fname)
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images = _ReadImageDesc(node, use_expanded)
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if select_images:
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skip = []
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new_images = OrderedDict()
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for name, image in images.items():
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if name in select_images:
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new_images[name] = image
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else:
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skip.append(name)
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images = new_images
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tout.notice('Skipping images: %s' % ', '.join(skip))
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state.Prepare(images, dtb)
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# Prepare the device tree by making sure that any missing
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# properties are added (e.g. 'pos' and 'size'). The values of these
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# may not be correct yet, but we add placeholders so that the
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# size of the device tree is correct. Later, in
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# SetCalculatedProperties() we will insert the correct values
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# without changing the device-tree size, thus ensuring that our
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# entry offsets remain the same.
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for image in images.values():
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image.gen_entries()
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image.CollectBintools()
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if update_fdt:
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image.AddMissingProperties(True)
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image.ProcessFdt(dtb)
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for dtb_item in state.GetAllFdts():
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dtb_item.Sync(auto_resize=True)
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dtb_item.Pack()
|
|
dtb_item.Flush()
|
|
return images
|
|
|
|
|
|
def ProcessImage(image, update_fdt, write_map, get_contents=True,
|
|
allow_resize=True, allow_missing=False,
|
|
allow_fake_blobs=False):
|
|
"""Perform all steps for this image, including checking and # writing it.
|
|
|
|
This means that errors found with a later image will be reported after
|
|
earlier images are already completed and written, but that does not seem
|
|
important.
|
|
|
|
Args:
|
|
image: Image to process
|
|
update_fdt: True to update the FDT wth entry offsets, etc.
|
|
write_map: True to write a map file
|
|
get_contents: True to get the image contents from files, etc., False if
|
|
the contents is already present
|
|
allow_resize: True to allow entries to change size (this does a re-pack
|
|
of the entries), False to raise an exception
|
|
allow_missing: Allow blob_ext objects to be missing
|
|
allow_fake_blobs: Allow blob_ext objects to be faked with dummy files
|
|
|
|
Returns:
|
|
True if one or more external blobs are missing or faked,
|
|
False if all are present
|
|
"""
|
|
if get_contents:
|
|
image.SetAllowMissing(allow_missing)
|
|
image.SetAllowFakeBlob(allow_fake_blobs)
|
|
image.GetEntryContents()
|
|
image.drop_absent()
|
|
image.GetEntryOffsets()
|
|
|
|
# We need to pack the entries to figure out where everything
|
|
# should be placed. This sets the offset/size of each entry.
|
|
# However, after packing we call ProcessEntryContents() which
|
|
# may result in an entry changing size. In that case we need to
|
|
# do another pass. Since the device tree often contains the
|
|
# final offset/size information we try to make space for this in
|
|
# AddMissingProperties() above. However, if the device is
|
|
# compressed we cannot know this compressed size in advance,
|
|
# since changing an offset from 0x100 to 0x104 (for example) can
|
|
# alter the compressed size of the device tree. So we need a
|
|
# third pass for this.
|
|
passes = 5
|
|
for pack_pass in range(passes):
|
|
try:
|
|
image.PackEntries()
|
|
except Exception as e:
|
|
if write_map:
|
|
fname = image.WriteMap()
|
|
print("Wrote map file '%s' to show errors" % fname)
|
|
raise
|
|
image.SetImagePos()
|
|
if update_fdt:
|
|
image.SetCalculatedProperties()
|
|
for dtb_item in state.GetAllFdts():
|
|
dtb_item.Sync()
|
|
dtb_item.Flush()
|
|
image.WriteSymbols()
|
|
sizes_ok = image.ProcessEntryContents()
|
|
if sizes_ok:
|
|
break
|
|
image.ResetForPack()
|
|
tout.info('Pack completed after %d pass(es)' % (pack_pass + 1))
|
|
if not sizes_ok:
|
|
image.Raise('Entries changed size after packing (tried %s passes)' %
|
|
passes)
|
|
|
|
image.BuildImage()
|
|
if write_map:
|
|
image.WriteMap()
|
|
|
|
missing_list = []
|
|
image.CheckMissing(missing_list)
|
|
if missing_list:
|
|
tout.warning("Image '%s' is missing external blobs and is non-functional: %s" %
|
|
(image.name, ' '.join([e.name for e in missing_list])))
|
|
_ShowHelpForMissingBlobs(missing_list)
|
|
|
|
faked_list = []
|
|
image.CheckFakedBlobs(faked_list)
|
|
if faked_list:
|
|
tout.warning(
|
|
"Image '%s' has faked external blobs and is non-functional: %s" %
|
|
(image.name, ' '.join([os.path.basename(e.GetDefaultFilename())
|
|
for e in faked_list])))
|
|
|
|
optional_list = []
|
|
image.CheckOptional(optional_list)
|
|
if optional_list:
|
|
tout.warning(
|
|
"Image '%s' is missing external blobs but is still functional: %s" %
|
|
(image.name, ' '.join([e.name for e in optional_list])))
|
|
_ShowHelpForMissingBlobs(optional_list)
|
|
|
|
missing_bintool_list = []
|
|
image.check_missing_bintools(missing_bintool_list)
|
|
if missing_bintool_list:
|
|
tout.warning(
|
|
"Image '%s' has missing bintools and is non-functional: %s" %
|
|
(image.name, ' '.join([os.path.basename(bintool.name)
|
|
for bintool in missing_bintool_list])))
|
|
return any([missing_list, faked_list, missing_bintool_list])
|
|
|
|
|
|
def Binman(args):
|
|
"""The main control code for binman
|
|
|
|
This assumes that help and test options have already been dealt with. It
|
|
deals with the core task of building images.
|
|
|
|
Args:
|
|
args: Command line arguments Namespace object
|
|
"""
|
|
global Image
|
|
global state
|
|
|
|
if args.full_help:
|
|
tools.print_full_help(
|
|
os.path.join(os.path.dirname(os.path.realpath(sys.argv[0])), 'README.rst')
|
|
)
|
|
return 0
|
|
|
|
# Put these here so that we can import this module without libfdt
|
|
from binman.image import Image
|
|
from binman import state
|
|
|
|
if args.cmd in ['ls', 'extract', 'replace', 'tool']:
|
|
try:
|
|
tout.init(args.verbosity)
|
|
tools.prepare_output_dir(None)
|
|
if args.cmd == 'ls':
|
|
ListEntries(args.image, args.paths)
|
|
|
|
if args.cmd == 'extract':
|
|
ExtractEntries(args.image, args.filename, args.outdir, args.paths,
|
|
not args.uncompressed, args.format)
|
|
|
|
if args.cmd == 'replace':
|
|
ReplaceEntries(args.image, args.filename, args.indir, args.paths,
|
|
do_compress=not args.compressed,
|
|
allow_resize=not args.fix_size, write_map=args.map)
|
|
|
|
if args.cmd == 'tool':
|
|
tools.set_tool_paths(args.toolpath)
|
|
if args.list:
|
|
bintool.Bintool.list_all()
|
|
elif args.fetch:
|
|
if not args.bintools:
|
|
raise ValueError(
|
|
"Please specify bintools to fetch or 'all' or 'missing'")
|
|
bintool.Bintool.fetch_tools(bintool.FETCH_ANY,
|
|
args.bintools)
|
|
else:
|
|
raise ValueError("Invalid arguments to 'tool' subcommand")
|
|
except:
|
|
raise
|
|
finally:
|
|
tools.finalise_output_dir()
|
|
return 0
|
|
|
|
elf_params = None
|
|
if args.update_fdt_in_elf:
|
|
elf_params = args.update_fdt_in_elf.split(',')
|
|
if len(elf_params) != 4:
|
|
raise ValueError('Invalid args %s to --update-fdt-in-elf: expected infile,outfile,begin_sym,end_sym' %
|
|
elf_params)
|
|
|
|
# Try to figure out which device tree contains our image description
|
|
if args.dt:
|
|
dtb_fname = args.dt
|
|
else:
|
|
board = args.board
|
|
if not board:
|
|
raise ValueError('Must provide a board to process (use -b <board>)')
|
|
board_pathname = os.path.join(args.build_dir, board)
|
|
dtb_fname = os.path.join(board_pathname, 'u-boot.dtb')
|
|
if not args.indir:
|
|
args.indir = ['.']
|
|
args.indir.append(board_pathname)
|
|
|
|
try:
|
|
tout.init(args.verbosity)
|
|
elf.debug = args.debug
|
|
cbfs_util.VERBOSE = args.verbosity > 2
|
|
state.use_fake_dtb = args.fake_dtb
|
|
|
|
# Normally we replace the 'u-boot' etype with 'u-boot-expanded', etc.
|
|
# When running tests this can be disabled using this flag. When not
|
|
# updating the FDT in image, it is not needed by binman, but we use it
|
|
# for consistency, so that the images look the same to U-Boot at
|
|
# runtime.
|
|
use_expanded = not args.no_expanded
|
|
try:
|
|
tools.set_input_dirs(args.indir)
|
|
tools.prepare_output_dir(args.outdir, args.preserve)
|
|
tools.set_tool_paths(args.toolpath)
|
|
state.SetEntryArgs(args.entry_arg)
|
|
state.SetThreads(args.threads)
|
|
|
|
images = PrepareImagesAndDtbs(dtb_fname, args.image,
|
|
args.update_fdt, use_expanded)
|
|
|
|
if args.test_section_timeout:
|
|
# Set the first image to timeout, used in testThreadTimeout()
|
|
images[list(images.keys())[0]].test_section_timeout = True
|
|
invalid = False
|
|
bintool.Bintool.set_missing_list(
|
|
args.force_missing_bintools.split(',') if
|
|
args.force_missing_bintools else None)
|
|
|
|
# Create the directory here instead of Entry.check_fake_fname()
|
|
# since that is called from a threaded context so different threads
|
|
# may race to create the directory
|
|
if args.fake_ext_blobs:
|
|
entry.Entry.create_fake_dir()
|
|
|
|
for image in images.values():
|
|
invalid |= ProcessImage(image, args.update_fdt, args.map,
|
|
allow_missing=args.allow_missing,
|
|
allow_fake_blobs=args.fake_ext_blobs)
|
|
|
|
# Write the updated FDTs to our output files
|
|
for dtb_item in state.GetAllFdts():
|
|
tools.write_file(dtb_item._fname, dtb_item.GetContents())
|
|
|
|
if elf_params:
|
|
data = state.GetFdtForEtype('u-boot-dtb').GetContents()
|
|
elf.UpdateFile(*elf_params, data)
|
|
|
|
# This can only be True if -M is provided, since otherwise binman
|
|
# would have raised an error already
|
|
if invalid:
|
|
msg = '\nSome images are invalid'
|
|
if args.ignore_missing:
|
|
tout.warning(msg)
|
|
else:
|
|
tout.error(msg)
|
|
return 103
|
|
|
|
# Use this to debug the time take to pack the image
|
|
#state.TimingShow()
|
|
finally:
|
|
tools.finalise_output_dir()
|
|
finally:
|
|
tout.uninit()
|
|
|
|
return 0
|