1 # SPDX-License-Identifier: GPL-2.0+
2 # Copyright (c) 2016 Google, Inc
3 # Written by Simon Glass <sjg@chromium.org>
5 # Creates binary images from input files controlled by a description
8 from __future__ import print_function
10 from collections import OrderedDict
18 from image import Image
22 # List of images we plan to create
23 # Make this global so that it can be referenced from tests
24 images = OrderedDict()
26 def _ReadImageDesc(binman_node):
27 """Read the image descriptions from the /binman node
29 This normally produces a single Image object called 'image'. But if
30 multiple images are present, they will all be returned.
33 binman_node: Node object of the /binman node
35 OrderedDict of Image objects, each of which describes an image
37 images = OrderedDict()
38 if 'multiple-images' in binman_node.props:
39 for node in binman_node.subnodes:
40 images[node.name] = Image(node.name, node)
42 images['image'] = Image('image', binman_node)
45 def _FindBinmanNode(dtb):
46 """Find the 'binman' node in the device tree
49 dtb: Fdt object to scan
51 Node object of /binman node, or None if not found
53 for node in dtb.GetRoot().subnodes:
54 if node.name == 'binman':
58 def WriteEntryDocs(modules, test_missing=None):
59 """Write out documentation for all entries
62 modules: List of Module objects to get docs for
63 test_missing: Used for testing only, to force an entry's documeentation
64 to show as missing even if it is present. Should be set to None in
67 from entry import Entry
68 Entry.WriteDocs(modules, test_missing)
71 def ListEntries(image_fname, entry_paths):
72 """List the entries in an image
74 This decodes the supplied image and displays a table of entries from that
75 image, preceded by a header.
78 image_fname: Image filename to process
79 entry_paths: List of wildcarded paths (e.g. ['*dtb*', 'u-boot*',
82 image = Image.FromFile(image_fname)
84 entries, lines, widths = image.GetListEntries(entry_paths)
86 num_columns = len(widths)
87 for linenum, line in enumerate(lines):
90 print('-' * (sum(widths) + num_columns * 2))
92 for i, item in enumerate(line):
94 if item.startswith('>'):
97 txt = '%*s ' % (width, item)
102 def ReadEntry(image_fname, entry_path, decomp=True):
103 """Extract an entry from an image
105 This extracts the data from a particular entry in an image
108 image_fname: Image filename to process
109 entry_path: Path to entry to extract
110 decomp: True to return uncompressed data, if the data is compress
111 False to return the raw data
114 data extracted from the entry
116 image = Image.FromFile(image_fname)
117 entry = image.FindEntryPath(entry_path)
118 return entry.ReadData(decomp)
121 def ExtractEntries(image_fname, output_fname, outdir, entry_paths,
123 """Extract the data from one or more entries and write it to files
126 image_fname: Image filename to process
127 output_fname: Single output filename to use if extracting one file, None
129 outdir: Output directory to use (for any number of files), else None
130 entry_paths: List of entry paths to extract
131 decomp: True to compress the entry data
134 List of EntryInfo records that were written
136 image = Image.FromFile(image_fname)
138 # Output an entry to a single file, as a special case
141 raise ValueError('Must specify an entry path to write with -o')
142 if len(entry_paths) != 1:
143 raise ValueError('Must specify exactly one entry path to write with -o')
144 entry = image.FindEntryPath(entry_paths[0])
145 data = entry.ReadData(decomp)
146 tools.WriteFile(output_fname, data)
147 tout.Notice("Wrote %#x bytes to file '%s'" % (len(data), output_fname))
150 # Otherwise we will output to a path given by the entry path of each entry.
151 # This means that entries will appear in subdirectories if they are part of
153 einfos = image.GetListEntries(entry_paths)[0]
154 tout.Notice('%d entries match and will be written' % len(einfos))
157 data = entry.ReadData(decomp)
158 path = entry.GetPath()[1:]
159 fname = os.path.join(outdir, path)
161 # If this entry has children, create a directory for it and put its
162 # data in a file called 'root' in that directory
163 if entry.GetEntries():
164 if not os.path.exists(fname):
166 fname = os.path.join(fname, 'root')
167 tout.Notice("Write entry '%s' to '%s'" % (entry.GetPath(), fname))
168 tools.WriteFile(fname, data)
172 def ProcessImage(image, update_fdt, write_map):
173 """Perform all steps for this image, including checking and # writing it.
175 This means that errors found with a later image will be reported after
176 earlier images are already completed and written, but that does not seem
180 image: Image to process
181 update_fdt: True to update the FDT wth entry offsets, etc.
182 write_map: True to write a map file
184 image.GetEntryContents()
185 image.GetEntryOffsets()
187 # We need to pack the entries to figure out where everything
188 # should be placed. This sets the offset/size of each entry.
189 # However, after packing we call ProcessEntryContents() which
190 # may result in an entry changing size. In that case we need to
191 # do another pass. Since the device tree often contains the
192 # final offset/size information we try to make space for this in
193 # AddMissingProperties() above. However, if the device is
194 # compressed we cannot know this compressed size in advance,
195 # since changing an offset from 0x100 to 0x104 (for example) can
196 # alter the compressed size of the device tree. So we need a
197 # third pass for this.
199 for pack_pass in range(passes):
204 except Exception as e:
206 fname = image.WriteMap()
207 print("Wrote map file '%s' to show errors" % fname)
211 image.SetCalculatedProperties()
212 for dtb_item in state.GetFdts():
214 sizes_ok = image.ProcessEntryContents()
219 image.Raise('Entries expanded after packing (tried %s passes)' %
229 """The main control code for binman
231 This assumes that help and test options have already been dealt with. It
232 deals with the core task of building images.
235 args: Command line arguments Namespace object
240 pager = os.getenv('PAGER')
243 fname = os.path.join(os.path.dirname(os.path.realpath(sys.argv[0])),
245 command.Run(pager, fname)
249 ListEntries(args.image, args.paths)
252 if args.cmd == 'extract':
254 tools.PrepareOutputDir(None)
255 ExtractEntries(args.image, args.filename, args.outdir, args.paths,
256 not args.uncompressed)
258 tools.FinaliseOutputDir()
261 # Try to figure out which device tree contains our image description
267 raise ValueError('Must provide a board to process (use -b <board>)')
268 board_pathname = os.path.join(args.build_dir, board)
269 dtb_fname = os.path.join(board_pathname, 'u-boot.dtb')
272 args.indir.append(board_pathname)
275 # Import these here in case libfdt.py is not available, in which case
276 # the above help option still works.
280 tout.Init(args.verbosity)
281 elf.debug = args.debug
282 cbfs_util.VERBOSE = args.verbosity > 2
283 state.use_fake_dtb = args.fake_dtb
285 tools.SetInputDirs(args.indir)
286 tools.PrepareOutputDir(args.outdir, args.preserve)
287 tools.SetToolPaths(args.toolpath)
288 state.SetEntryArgs(args.entry_arg)
290 # Get the device tree ready by compiling it and copying the compiled
291 # output into a file in our output directly. Then scan it for use
293 dtb_fname = fdt_util.EnsureCompiled(dtb_fname)
294 fname = tools.GetOutputFilename('u-boot.dtb.out')
295 tools.WriteFile(fname, tools.ReadFile(dtb_fname))
296 dtb = fdt.FdtScan(fname)
298 node = _FindBinmanNode(dtb)
300 raise ValueError("Device tree '%s' does not have a 'binman' "
303 images = _ReadImageDesc(node)
307 new_images = OrderedDict()
308 for name, image in images.items():
309 if name in args.image:
310 new_images[name] = image
314 if skip and args.verbosity >= 2:
315 print('Skipping images: %s' % ', '.join(skip))
317 state.Prepare(images, dtb)
319 # Prepare the device tree by making sure that any missing
320 # properties are added (e.g. 'pos' and 'size'). The values of these
321 # may not be correct yet, but we add placeholders so that the
322 # size of the device tree is correct. Later, in
323 # SetCalculatedProperties() we will insert the correct values
324 # without changing the device-tree size, thus ensuring that our
325 # entry offsets remain the same.
326 for image in images.values():
327 image.ExpandEntries()
329 image.AddMissingProperties()
330 image.ProcessFdt(dtb)
332 for dtb_item in state.GetFdts():
333 dtb_item.Sync(auto_resize=True)
337 for image in images.values():
338 ProcessImage(image, args.update_fdt, args.map)
340 # Write the updated FDTs to our output files
341 for dtb_item in state.GetFdts():
342 tools.WriteFile(dtb_item._fname, dtb_item.GetContents())
345 tools.FinaliseOutputDir()