From: Simon Glass Date: Mon, 8 Jul 2019 19:18:52 +0000 (-0600) Subject: binman: Add a utility library for coreboot CBFS X-Git-Tag: v2019.10-rc1~14^2~45 X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=4997a7ed05bf109b34ea0d072a33bb29209ae4ff;p=oweals%2Fu-boot.git binman: Add a utility library for coreboot CBFS Coreboot uses a simple flash-based filesystem called Coreboot Filesystem (CBFS) to organise files used during boot. This allows files to be named and their position in the flash to be set. It has special features for dealing with x86 devices which typically memory-map their SPI flash to the top of 32-bit address space and need a 'boot block' ending there. Create a library to help create and read CBFS files. This includes a writer class, a reader class and associated other helpers. Only a subset of features are currently supported. Signed-off-by: Simon Glass --- diff --git a/.travis.yml b/.travis.yml index 8bc7ec9495..b971677bec 100644 --- a/.travis.yml +++ b/.travis.yml @@ -32,6 +32,7 @@ addons: - device-tree-compiler - lzop - liblz4-tool + - lzma-alone - libisl15 - clang-7 - srecord diff --git a/tools/binman/binman.py b/tools/binman/binman.py index 52c03f68c6..613aad5c45 100755 --- a/tools/binman/binman.py +++ b/tools/binman/binman.py @@ -62,6 +62,7 @@ def RunTests(debug, verbosity, processes, test_preserve_dirs, args, toolpath): name to execute (as in 'binman -t testSections', for example) toolpath: List of paths to use for tools """ + import cbfs_util_test import elf_test import entry_test import fdt_test @@ -90,7 +91,8 @@ def RunTests(debug, verbosity, processes, test_preserve_dirs, args, toolpath): suite = unittest.TestSuite() loader = unittest.TestLoader() for module in (entry_test.TestEntry, ftest.TestFunctional, fdt_test.TestFdt, - elf_test.TestElf, image_test.TestImage): + elf_test.TestElf, image_test.TestImage, + cbfs_util_test.TestCbfs): # Test the test module about our arguments, if it is interested if hasattr(module, 'setup_test_args'): setup_test_args = getattr(module, 'setup_test_args') diff --git a/tools/binman/cbfs_util.py b/tools/binman/cbfs_util.py new file mode 100644 index 0000000000..197cff8950 --- /dev/null +++ b/tools/binman/cbfs_util.py @@ -0,0 +1,720 @@ +# SPDX-License-Identifier: GPL-2.0+ +# Copyright 2019 Google LLC +# Written by Simon Glass + +"""Support for coreboot's CBFS format + +CBFS supports a header followed by a number of files, generally targeted at SPI +flash. + +The format is somewhat defined by documentation in the coreboot tree although +it is necessary to rely on the C structures and source code (mostly cbfstool) +to fully understand it. + +Currently supported: raw and stage types with compression +""" + +from __future__ import print_function + +from collections import OrderedDict +import io +import struct +import sys + +import command +import elf +import tools + +# Set to True to enable printing output while working +DEBUG = False + +# Set to True to enable output from running cbfstool for debugging +VERBOSE = False + +# The master header, at the start of the CBFS +HEADER_FORMAT = '>IIIIIIII' +HEADER_LEN = 0x20 +HEADER_MAGIC = 0x4f524243 +HEADER_VERSION1 = 0x31313131 +HEADER_VERSION2 = 0x31313132 + +# The file header, at the start of each file in the CBFS +FILE_HEADER_FORMAT = b'>8sIIII' +FILE_HEADER_LEN = 0x18 +FILE_MAGIC = b'LARCHIVE' +FILENAME_ALIGN = 16 # Filename lengths are aligned to this + +# A stage header containing information about 'stage' files +# Yes this is correct: this header is in litte-endian format +STAGE_FORMAT = ' offset: + raise ValueError('No space for data before offset %#x (current offset %#x)' % + (offset, fd.tell())) + fd.write(tools.GetBytes(self._erase_byte, offset - fd.tell())) + + def _align_to(self, fd, align): + """Write out pad bytes until a given alignment is reached + + This only aligns if the resulting output would not reach the end of the + CBFS, since we want to leave the last 4 bytes for the master-header + pointer. + + Args: + fd: File objext to write to + align: Alignment to require (e.g. 4 means pad to next 4-byte + boundary) + """ + offset = align_int(fd.tell(), align) + if offset < self._size: + self._skip_to(fd, offset) + + def add_file_stage(self, name, data): + """Add a new stage file to the CBFS + + Args: + name: String file name to put in CBFS (does not need to correspond + to the name that the file originally came from) + data: Contents of file + + Returns: + CbfsFile object created + """ + cfile = CbfsFile.stage(self._base_address, name, data) + self._files[name] = cfile + return cfile + + def add_file_raw(self, name, data, compress=COMPRESS_NONE): + """Create a new raw file + + Args: + name: String file name to put in CBFS (does not need to correspond + to the name that the file originally came from) + data: Contents of file + compress: Compression algorithm to use (COMPRESS_...) + + Returns: + CbfsFile object created + """ + cfile = CbfsFile.raw(name, data, compress) + self._files[name] = cfile + return cfile + + def _write_header(self, fd, add_fileheader): + """Write out the master header to a CBFS + + Args: + fd: File object + add_fileheader: True to place the master header in a file header + record + """ + if fd.tell() > self._header_offset: + raise ValueError('No space for header at offset %#x (current offset %#x)' % + (self._header_offset, fd.tell())) + if not add_fileheader: + self._skip_to(fd, self._header_offset) + hdr = struct.pack(HEADER_FORMAT, HEADER_MAGIC, HEADER_VERSION2, + self._size, self._bootblock_size, self._align, + self._contents_offset, self._arch, 0xffffffff) + if add_fileheader: + name = _pack_string(self._master_name) + fd.write(struct.pack(FILE_HEADER_FORMAT, FILE_MAGIC, len(hdr), + TYPE_CBFSHEADER, 0, + FILE_HEADER_LEN + len(name))) + fd.write(name) + self._header_offset = fd.tell() + fd.write(hdr) + self._align_to(fd, self._align) + else: + fd.write(hdr) + + def get_data(self): + """Obtain the full contents of the CBFS + + Thhis builds the CBFS with headers and all required files. + + Returns: + 'bytes' type containing the data + """ + fd = io.BytesIO() + + # THe header can go at the start in some cases + if self._hdr_at_start: + self._write_header(fd, add_fileheader=self._add_fileheader) + self._skip_to(fd, self._contents_offset) + + # Write out each file + for cbf in self._files.values(): + fd.write(cbf.get_data()) + self._align_to(fd, self._align) + if not self._hdr_at_start: + self._write_header(fd, add_fileheader=self._add_fileheader) + + # Pad to the end and write a pointer to the CBFS master header + self._skip_to(fd, self._base_address or self._size - 4) + rel_offset = self._header_offset - self._size + fd.write(struct.pack('II", hdr) + data = hdr + fd.read(alen - 8) + if atag == FILE_ATTR_TAG_COMPRESSION: + # We don't currently use this information + atag, alen, compress, _decomp_size = struct.unpack( + ATTR_COMPRESSION_FORMAT, data) + else: + print('Unknown attribute tag %x' % atag) + attr_size -= len(data) + return compress + + def _read_header(self, fd): + """Read the master header + + Reads the header and stores the information obtained into the member + variables. + + Args: + fd: File to read from + + Returns: + True if header was read OK, False if it is truncated or has the + wrong magic or version + """ + pos = fd.tell() + data = fd.read(HEADER_LEN) + if len(data) < HEADER_LEN: + print('Header at %x ran out of data' % pos) + return False + (self.magic, self.version, self.rom_size, self.boot_block_size, + self.align, self.cbfs_offset, self.arch, _) = struct.unpack( + HEADER_FORMAT, data) + return self.magic == HEADER_MAGIC and ( + self.version == HEADER_VERSION1 or + self.version == HEADER_VERSION2) + + @classmethod + def _read_string(cls, fd): + """Read a string from a file + + This reads a string and aligns the data to the next alignment boundary + + Args: + fd: File to read from + + Returns: + string read ('str' type) encoded to UTF-8, or None if we ran out of + data + """ + val = b'' + while True: + data = fd.read(FILENAME_ALIGN) + if len(data) < FILENAME_ALIGN: + return None + pos = data.find(b'\0') + if pos == -1: + val += data + else: + val += data[:pos] + break + return val.decode('utf-8') + + +def cbfstool(fname, *cbfs_args): + """Run cbfstool with provided arguments + + If the tool fails then this function raises an exception and prints out the + output and stderr. + + Args: + fname: Filename of CBFS + *cbfs_args: List of arguments to pass to cbfstool + + Returns: + CommandResult object containing the results + """ + args = ('cbfstool', fname) + cbfs_args + result = command.RunPipe([args], capture=not VERBOSE, + capture_stderr=not VERBOSE, raise_on_error=False) + if result.return_code: + print(result.stderr, file=sys.stderr) + raise Exception("Failed to run (error %d): '%s'" % + (result.return_code, ' '.join(args))) diff --git a/tools/binman/cbfs_util_test.py b/tools/binman/cbfs_util_test.py new file mode 100755 index 0000000000..19086305af --- /dev/null +++ b/tools/binman/cbfs_util_test.py @@ -0,0 +1,540 @@ +#!/usr/bin/env python +# SPDX-License-Identifier: GPL-2.0+ +# Copyright 2019 Google LLC +# Written by Simon Glass + +"""Tests for cbfs_util + +These create and read various CBFSs and compare the results with expected +values and with cbfstool +""" + +from __future__ import print_function + +import io +import os +import shutil +import struct +import tempfile +import unittest + +import cbfs_util +from cbfs_util import CbfsWriter +import elf +import test_util +import tools + +U_BOOT_DATA = b'1234' +U_BOOT_DTB_DATA = b'udtb' +COMPRESS_DATA = b'compress xxxxxxxxxxxxxxxxxxxxxx data' + + +class TestCbfs(unittest.TestCase): + """Test of cbfs_util classes""" + #pylint: disable=W0212 + @classmethod + def setUpClass(cls): + # Create a temporary directory for test files + cls._indir = tempfile.mkdtemp(prefix='cbfs_util.') + tools.SetInputDirs([cls._indir]) + + # Set up some useful data files + TestCbfs._make_input_file('u-boot.bin', U_BOOT_DATA) + TestCbfs._make_input_file('u-boot.dtb', U_BOOT_DTB_DATA) + TestCbfs._make_input_file('compress', COMPRESS_DATA) + + # Set up a temporary output directory, used by the tools library when + # compressing files + tools.PrepareOutputDir(None) + + cls.have_cbfstool = True + try: + tools.Run('which', 'cbfstool') + except: + cls.have_cbfstool = False + + cls.have_lz4 = True + try: + tools.Run('lz4', '--no-frame-crc', '-c', + tools.GetInputFilename('u-boot.bin')) + except: + cls.have_lz4 = False + + @classmethod + def tearDownClass(cls): + """Remove the temporary input directory and its contents""" + if cls._indir: + shutil.rmtree(cls._indir) + cls._indir = None + tools.FinaliseOutputDir() + + @classmethod + def _make_input_file(cls, fname, contents): + """Create a new test input file, creating directories as needed + + Args: + fname: Filename to create + contents: File contents to write in to the file + Returns: + Full pathname of file created + """ + pathname = os.path.join(cls._indir, fname) + tools.WriteFile(pathname, contents) + return pathname + + def _check_hdr(self, data, size, offset=0, arch=cbfs_util.ARCHITECTURE_X86): + """Check that the CBFS has the expected header + + Args: + data: Data to check + size: Expected ROM size + offset: Expected offset to first CBFS file + arch: Expected architecture + + Returns: + CbfsReader object containing the CBFS + """ + cbfs = cbfs_util.CbfsReader(data) + self.assertEqual(cbfs_util.HEADER_MAGIC, cbfs.magic) + self.assertEqual(cbfs_util.HEADER_VERSION2, cbfs.version) + self.assertEqual(size, cbfs.rom_size) + self.assertEqual(0, cbfs.boot_block_size) + self.assertEqual(cbfs_util.ENTRY_ALIGN, cbfs.align) + self.assertEqual(offset, cbfs.cbfs_offset) + self.assertEqual(arch, cbfs.arch) + return cbfs + + def _check_uboot(self, cbfs, ftype=cbfs_util.TYPE_RAW, offset=0x38, + data=U_BOOT_DATA): + """Check that the U-Boot file is as expected + + Args: + cbfs: CbfsReader object to check + ftype: Expected file type + offset: Expected offset of file + data: Expected data in file + + Returns: + CbfsFile object containing the file + """ + self.assertIn('u-boot', cbfs.files) + cfile = cbfs.files['u-boot'] + self.assertEqual('u-boot', cfile.name) + self.assertEqual(offset, cfile.offset) + self.assertEqual(data, cfile.data) + self.assertEqual(ftype, cfile.ftype) + self.assertEqual(cbfs_util.COMPRESS_NONE, cfile.compress) + self.assertEqual(len(data), cfile.memlen) + return cfile + + def _check_dtb(self, cbfs, offset=0x38, data=U_BOOT_DTB_DATA): + """Check that the U-Boot dtb file is as expected + + Args: + cbfs: CbfsReader object to check + offset: Expected offset of file + data: Expected data in file + """ + self.assertIn('u-boot-dtb', cbfs.files) + cfile = cbfs.files['u-boot-dtb'] + self.assertEqual('u-boot-dtb', cfile.name) + self.assertEqual(offset, cfile.offset) + self.assertEqual(U_BOOT_DTB_DATA, cfile.data) + self.assertEqual(cbfs_util.TYPE_RAW, cfile.ftype) + self.assertEqual(cbfs_util.COMPRESS_NONE, cfile.compress) + self.assertEqual(len(U_BOOT_DTB_DATA), cfile.memlen) + + def _check_raw(self, data, size, offset=0, arch=cbfs_util.ARCHITECTURE_X86): + """Check that two raw files are added as expected + + Args: + data: Data to check + size: Expected ROM size + offset: Expected offset to first CBFS file + arch: Expected architecture + """ + cbfs = self._check_hdr(data, size, offset=offset, arch=arch) + self._check_uboot(cbfs) + self._check_dtb(cbfs) + + def _get_expected_cbfs(self, size, arch='x86', compress=None): + """Get the file created by cbfstool for a particular scenario + + Args: + size: Size of the CBFS in bytes + arch: Architecture of the CBFS, as a string + compress: Compression to use, e.g. cbfs_util.COMPRESS_LZMA + + Returns: + Resulting CBFS file, or None if cbfstool is not available + """ + if not self.have_cbfstool or not self.have_lz4: + return None + cbfs_fname = os.path.join(self._indir, 'test.cbfs') + cbfs_util.cbfstool(cbfs_fname, 'create', '-m', arch, '-s', '%#x' % size) + cbfs_util.cbfstool(cbfs_fname, 'add', '-n', 'u-boot', '-t', 'raw', + '-c', compress and compress[0] or 'none', + '-f', tools.GetInputFilename( + compress and 'compress' or 'u-boot.bin')) + cbfs_util.cbfstool(cbfs_fname, 'add', '-n', 'u-boot-dtb', '-t', 'raw', + '-c', compress and compress[1] or 'none', + '-f', tools.GetInputFilename( + compress and 'compress' or 'u-boot.dtb')) + return cbfs_fname + + def _compare_expected_cbfs(self, data, cbfstool_fname): + """Compare against what cbfstool creates + + This compares what binman creates with what cbfstool creates for what + is proportedly the same thing. + + Args: + data: CBFS created by binman + cbfstool_fname: CBFS created by cbfstool + """ + if not self.have_cbfstool or not self.have_lz4: + return + expect = tools.ReadFile(cbfstool_fname) + if expect != data: + tools.WriteFile('/tmp/expect', expect) + tools.WriteFile('/tmp/actual', data) + print('diff -y <(xxd -g1 /tmp/expect) <(xxd -g1 /tmp/actual) | colordiff') + self.fail('cbfstool produced a different result') + + def test_cbfs_functions(self): + """Test global functions of cbfs_util""" + self.assertEqual(cbfs_util.ARCHITECTURE_X86, cbfs_util.find_arch('x86')) + self.assertIsNone(cbfs_util.find_arch('bad-arch')) + + self.assertEqual(cbfs_util.COMPRESS_LZMA, cbfs_util.find_compress('lzma')) + self.assertIsNone(cbfs_util.find_compress('bad-comp')) + + def test_cbfstool_failure(self): + """Test failure to run cbfstool""" + if not self.have_cbfstool: + self.skipTest('No cbfstool available') + try: + # In verbose mode this test fails since stderr is not captured. Fix + # this by turning off verbosity. + old_verbose = cbfs_util.VERBOSE + cbfs_util.VERBOSE = False + with test_util.capture_sys_output() as (_stdout, stderr): + with self.assertRaises(Exception) as e: + cbfs_util.cbfstool('missing-file', 'bad-command') + finally: + cbfs_util.VERBOSE = old_verbose + self.assertIn('Unknown command', stderr.getvalue()) + self.assertIn('Failed to run', str(e.exception)) + + def test_cbfs_raw(self): + """Test base handling of a Coreboot Filesystem (CBFS)""" + size = 0xb0 + cbw = CbfsWriter(size) + cbw.add_file_raw('u-boot', U_BOOT_DATA) + cbw.add_file_raw('u-boot-dtb', U_BOOT_DTB_DATA) + data = cbw.get_data() + self._check_raw(data, size) + cbfs_fname = self._get_expected_cbfs(size=size) + self._compare_expected_cbfs(data, cbfs_fname) + + def test_cbfs_invalid_file_type(self): + """Check handling of an invalid file type when outputiing a CBFS""" + size = 0xb0 + cbw = CbfsWriter(size) + cfile = cbw.add_file_raw('u-boot', U_BOOT_DATA) + + # Change the type manually before generating the CBFS, and make sure + # that the generator complains + cfile.ftype = 0xff + with self.assertRaises(ValueError) as e: + cbw.get_data() + self.assertIn('Unknown type 0xff when writing', str(e.exception)) + + def test_cbfs_invalid_file_type_on_read(self): + """Check handling of an invalid file type when reading the CBFS""" + size = 0xb0 + cbw = CbfsWriter(size) + cbw.add_file_raw('u-boot', U_BOOT_DATA) + + data = cbw.get_data() + + # Read in the first file header + cbr = cbfs_util.CbfsReader(data, read=False) + with io.BytesIO(data) as fd: + self.assertTrue(cbr._find_and_read_header(fd, len(data))) + pos = fd.tell() + hdr_data = fd.read(cbfs_util.FILE_HEADER_LEN) + magic, size, ftype, attr, offset = struct.unpack( + cbfs_util.FILE_HEADER_FORMAT, hdr_data) + + # Create a new CBFS with a change to the file type + ftype = 0xff + newdata = data[:pos] + newdata += struct.pack(cbfs_util.FILE_HEADER_FORMAT, magic, size, ftype, + attr, offset) + newdata += data[pos + cbfs_util.FILE_HEADER_LEN:] + + # Read in this CBFS and make sure that the reader complains + with self.assertRaises(ValueError) as e: + cbfs_util.CbfsReader(newdata) + self.assertIn('Unknown type 0xff when reading', str(e.exception)) + + def test_cbfs_no_space(self): + """Check handling of running out of space in the CBFS""" + size = 0x60 + cbw = CbfsWriter(size) + cbw.add_file_raw('u-boot', U_BOOT_DATA) + with self.assertRaises(ValueError) as e: + cbw.get_data() + self.assertIn('No space for header', str(e.exception)) + + def test_cbfs_no_space_skip(self): + """Check handling of running out of space in CBFS with file header""" + size = 0x70 + cbw = CbfsWriter(size) + cbw._add_fileheader = True + cbw.add_file_raw('u-boot', U_BOOT_DATA) + with self.assertRaises(ValueError) as e: + cbw.get_data() + self.assertIn('No space for data before offset', str(e.exception)) + + def test_cbfs_bad_header_ptr(self): + """Check handling of a bad master-header pointer""" + size = 0x70 + cbw = CbfsWriter(size) + cbw.add_file_raw('u-boot', U_BOOT_DATA) + data = cbw.get_data() + + # Add one to the pointer to make it invalid + newdata = data[:-4] + struct.pack('I', fd.read(4)) + if tag == cbfs_util.FILE_ATTR_TAG_COMPRESSION: + break + + # Create a new CBFS with the tag changed to something invalid + newdata = data[:pos] + struct.pack('>I', 0x123) + data[pos + 4:] + with test_util.capture_sys_output() as (stdout, _stderr): + cbfs_util.CbfsReader(newdata) + self.assertEqual('Unknown attribute tag 123\n', stdout.getvalue()) + + def test_cbfs_missing_attribute(self): + """Check handling of an incomplete attribute tag""" + if not self.have_lz4: + self.skipTest('lz4 --no-frame-crc not available') + size = 0x140 + cbw = CbfsWriter(size) + cbw.add_file_raw('u-boot', COMPRESS_DATA, + compress=cbfs_util.COMPRESS_LZ4) + data = cbw.get_data() + + # Read in the CBFS master header (only), then stop + cbr = cbfs_util.CbfsReader(data, read=False) + with io.BytesIO(data) as fd: + self.assertTrue(cbr._find_and_read_header(fd, len(data))) + pos = fd.tell() + + # Create a new CBFS with only the first 4 bytes of the compression tag, + # then try to read the file + tag_pos = pos + cbfs_util.FILE_HEADER_LEN + cbfs_util.FILENAME_ALIGN + newdata = data[:tag_pos + 4] + with test_util.capture_sys_output() as (stdout, _stderr): + with io.BytesIO(newdata) as fd: + fd.seek(pos) + self.assertEqual(False, cbr._read_next_file(fd)) + self.assertIn('Attribute tag at %x ran out of data' % tag_pos, + stdout.getvalue()) + + def test_cbfs_file_master_header(self): + """Check handling of a file containing a master header""" + size = 0x100 + cbw = CbfsWriter(size) + cbw._add_fileheader = True + cbw.add_file_raw('u-boot', U_BOOT_DATA) + data = cbw.get_data() + + cbr = cbfs_util.CbfsReader(data) + self.assertIn('u-boot', cbr.files) + self.assertEqual(size, cbr.rom_size) + + def test_cbfs_arch(self): + """Test on non-x86 architecture""" + size = 0x100 + cbw = CbfsWriter(size, arch=cbfs_util.ARCHITECTURE_PPC64) + cbw.add_file_raw('u-boot', U_BOOT_DATA) + cbw.add_file_raw('u-boot-dtb', U_BOOT_DTB_DATA) + data = cbw.get_data() + self._check_raw(data, size, offset=0x40, + arch=cbfs_util.ARCHITECTURE_PPC64) + + # Compare against what cbfstool creates + cbfs_fname = self._get_expected_cbfs(size=size, arch='ppc64') + self._compare_expected_cbfs(data, cbfs_fname) + + def test_cbfs_stage(self): + """Tests handling of a Coreboot Filesystem (CBFS)""" + if not elf.ELF_TOOLS: + self.skipTest('Python elftools not available') + elf_fname = os.path.join(self._indir, 'cbfs-stage.elf') + elf.MakeElf(elf_fname, U_BOOT_DATA, U_BOOT_DTB_DATA) + + size = 0xb0 + cbw = CbfsWriter(size) + cbw.add_file_stage('u-boot', tools.ReadFile(elf_fname)) + + data = cbw.get_data() + cbfs = self._check_hdr(data, size) + load = 0xfef20000 + entry = load + 2 + + cfile = self._check_uboot(cbfs, cbfs_util.TYPE_STAGE, offset=0x28, + data=U_BOOT_DATA + U_BOOT_DTB_DATA) + + self.assertEqual(entry, cfile.entry) + self.assertEqual(load, cfile.load) + self.assertEqual(len(U_BOOT_DATA) + len(U_BOOT_DTB_DATA), + cfile.data_len) + + # Compare against what cbfstool creates + if self.have_cbfstool: + cbfs_fname = os.path.join(self._indir, 'test.cbfs') + cbfs_util.cbfstool(cbfs_fname, 'create', '-m', 'x86', '-s', + '%#x' % size) + cbfs_util.cbfstool(cbfs_fname, 'add-stage', '-n', 'u-boot', + '-f', elf_fname) + self._compare_expected_cbfs(data, cbfs_fname) + + def test_cbfs_raw_compress(self): + """Test base handling of compressing raw files""" + if not self.have_lz4: + self.skipTest('lz4 --no-frame-crc not available') + size = 0x140 + cbw = CbfsWriter(size) + cbw.add_file_raw('u-boot', COMPRESS_DATA, + compress=cbfs_util.COMPRESS_LZ4) + cbw.add_file_raw('u-boot-dtb', COMPRESS_DATA, + compress=cbfs_util.COMPRESS_LZMA) + data = cbw.get_data() + + cbfs = self._check_hdr(data, size) + self.assertIn('u-boot', cbfs.files) + cfile = cbfs.files['u-boot'] + self.assertEqual(cfile.name, 'u-boot') + self.assertEqual(cfile.offset, 56) + self.assertEqual(cfile.data, COMPRESS_DATA) + self.assertEqual(cfile.ftype, cbfs_util.TYPE_RAW) + self.assertEqual(cfile.compress, cbfs_util.COMPRESS_LZ4) + self.assertEqual(cfile.memlen, len(COMPRESS_DATA)) + + self.assertIn('u-boot-dtb', cbfs.files) + cfile = cbfs.files['u-boot-dtb'] + self.assertEqual(cfile.name, 'u-boot-dtb') + self.assertEqual(cfile.offset, 56) + self.assertEqual(cfile.data, COMPRESS_DATA) + self.assertEqual(cfile.ftype, cbfs_util.TYPE_RAW) + self.assertEqual(cfile.compress, cbfs_util.COMPRESS_LZMA) + self.assertEqual(cfile.memlen, len(COMPRESS_DATA)) + + cbfs_fname = self._get_expected_cbfs(size=size, compress=['lz4', 'lzma']) + self._compare_expected_cbfs(data, cbfs_fname) + + +if __name__ == '__main__': + unittest.main()