diff --git a/tools/binman/bintool.py b/tools/binman/bintool.py
index e2e5660d16..068d766c50 100644
--- a/tools/binman/bintool.py
+++ b/tools/binman/bintool.py
@@ -327,9 +327,9 @@ class Bintool:
         """
         tmpdir = tempfile.mkdtemp(prefix='binmanf.')
         print(f"- clone git repo '{git_repo}' to '{tmpdir}'")
-        tools.Run('git', 'clone', '--depth', '1', git_repo, tmpdir)
+        tools.run('git', 'clone', '--depth', '1', git_repo, tmpdir)
         print(f"- build target '{make_target}'")
-        tools.Run('make', '-C', tmpdir, '-j', f'{multiprocessing.cpu_count()}',
+        tools.run('make', '-C', tmpdir, '-j', f'{multiprocessing.cpu_count()}',
                   make_target)
         fname = os.path.join(tmpdir, bintool_path)
         if not os.path.exists(fname):
@@ -349,8 +349,8 @@ class Bintool:
                 str: Filename of fetched file to copy to a suitable directory
                 str: Name of temp directory to remove, or None
         """
-        fname, tmpdir = tools.Download(url)
-        tools.Run('chmod', 'a+x', fname)
+        fname, tmpdir = tools.download(url)
+        tools.run('chmod', 'a+x', fname)
         return fname, tmpdir
 
     @classmethod
@@ -384,7 +384,7 @@ class Bintool:
         """
         args = ['sudo', 'apt', 'install', '-y', package]
         print('- %s' % ' '.join(args))
-        tools.Run(*args)
+        tools.run(*args)
         return True
 
     @staticmethod
diff --git a/tools/binman/bintool_test.py b/tools/binman/bintool_test.py
index 3d6bcdab9d..7efb8391db 100644
--- a/tools/binman/bintool_test.py
+++ b/tools/binman/bintool_test.py
@@ -80,7 +80,7 @@ class TestBintool(unittest.TestCase):
 
         Args:
             fake_download (function): Function to call instead of
-                tools.Download()
+                tools.download()
             method (bintool.FETCH_...: Fetch method to use
 
         Returns:
@@ -88,7 +88,7 @@ class TestBintool(unittest.TestCase):
         """
         btest = Bintool.create('_testing')
         col = terminal.Color()
-        with unittest.mock.patch.object(tools, 'Download',
+        with unittest.mock.patch.object(tools, 'download',
                                         side_effect=fake_download):
             with test_util.capture_sys_output() as (stdout, _):
                 btest.fetch_tool(method, col, False)
@@ -97,7 +97,7 @@ class TestBintool(unittest.TestCase):
     def test_fetch_url_err(self):
         """Test an error while fetching a tool from a URL"""
         def fail_download(url):
-            """Take the tools.Download() function by raising an exception"""
+            """Take the tools.download() function by raising an exception"""
             raise urllib.error.URLError('my error')
 
         stdout = self.check_fetch_url(fail_download, bintool.FETCH_ANY)
@@ -114,7 +114,7 @@ class TestBintool(unittest.TestCase):
     def test_fetch_method(self):
         """Test fetching using a particular method"""
         def fail_download(url):
-            """Take the tools.Download() function by raising an exception"""
+            """Take the tools.download() function by raising an exception"""
             raise urllib.error.URLError('my error')
 
         stdout = self.check_fetch_url(fail_download, bintool.FETCH_BIN)
@@ -123,11 +123,11 @@ class TestBintool(unittest.TestCase):
     def test_fetch_pass_fail(self):
         """Test fetching multiple tools with some passing and some failing"""
         def handle_download(_):
-            """Take the tools.Download() function by writing a file"""
+            """Take the tools.download() function by writing a file"""
             if self.seq:
                 raise urllib.error.URLError('not found')
             self.seq += 1
-            tools.WriteFile(fname, expected)
+            tools.write_file(fname, expected)
             return fname, dirname
 
         expected = b'this is a test'
@@ -140,12 +140,12 @@ class TestBintool(unittest.TestCase):
         self.seq = 0
 
         with unittest.mock.patch.object(bintool, 'DOWNLOAD_DESTDIR', destdir):
-            with unittest.mock.patch.object(tools, 'Download',
+            with unittest.mock.patch.object(tools, 'download',
                                             side_effect=handle_download):
                 with test_util.capture_sys_output() as (stdout, _):
                     Bintool.fetch_tools(bintool.FETCH_ANY, ['_testing'] * 2)
         self.assertTrue(os.path.exists(dest_fname))
-        data = tools.ReadFile(dest_fname)
+        data = tools.read_file(dest_fname)
         self.assertEqual(expected, data)
 
         lines = stdout.getvalue().splitlines()
@@ -245,14 +245,14 @@ class TestBintool(unittest.TestCase):
                 tmpdir = cmd[2]
                 self.fname = os.path.join(tmpdir, 'pathname')
                 if write_file:
-                    tools.WriteFile(self.fname, b'hello')
+                    tools.write_file(self.fname, b'hello')
 
         btest = Bintool.create('_testing')
         col = terminal.Color()
         self.fname = None
         with unittest.mock.patch.object(bintool, 'DOWNLOAD_DESTDIR',
                                         self._indir):
-            with unittest.mock.patch.object(tools, 'Run', side_effect=fake_run):
+            with unittest.mock.patch.object(tools, 'run', side_effect=fake_run):
                 with test_util.capture_sys_output() as (stdout, _):
                     btest.fetch_tool(bintool.FETCH_BUILD, col, False)
         fname = os.path.join(self._indir, '_testing')
@@ -275,7 +275,7 @@ class TestBintool(unittest.TestCase):
         btest = Bintool.create('_testing')
         btest.install = True
         col = terminal.Color()
-        with unittest.mock.patch.object(tools, 'Run', return_value=None):
+        with unittest.mock.patch.object(tools, 'run', return_value=None):
             with test_util.capture_sys_output() as _:
                 result = btest.fetch_tool(bintool.FETCH_BIN, col, False)
         self.assertEqual(bintool.FETCHED, result)
@@ -292,8 +292,8 @@ class TestBintool(unittest.TestCase):
     def test_all_bintools(self):
         """Test that all bintools can handle all available fetch types"""
         def handle_download(_):
-            """Take the tools.Download() function by writing a file"""
-            tools.WriteFile(fname, expected)
+            """Take the tools.download() function by writing a file"""
+            tools.write_file(fname, expected)
             return fname, dirname
 
         def fake_run(*cmd):
@@ -301,15 +301,15 @@ class TestBintool(unittest.TestCase):
                 # See Bintool.build_from_git()
                 tmpdir = cmd[2]
                 self.fname = os.path.join(tmpdir, 'pathname')
-                tools.WriteFile(self.fname, b'hello')
+                tools.write_file(self.fname, b'hello')
 
         expected = b'this is a test'
         dirname = os.path.join(self._indir, 'download_dir')
         os.mkdir(dirname)
         fname = os.path.join(dirname, 'downloaded')
 
-        with unittest.mock.patch.object(tools, 'Run', side_effect=fake_run):
-            with unittest.mock.patch.object(tools, 'Download',
+        with unittest.mock.patch.object(tools, 'run', side_effect=fake_run):
+            with unittest.mock.patch.object(tools, 'download',
                                             side_effect=handle_download):
                 with test_util.capture_sys_output() as _:
                     for name in Bintool.get_tool_list():
@@ -320,7 +320,7 @@ class TestBintool(unittest.TestCase):
                             if result is not True and result is not None:
                                 result_fname, _ = result
                                 self.assertTrue(os.path.exists(result_fname))
-                                data = tools.ReadFile(result_fname)
+                                data = tools.read_file(result_fname)
                                 self.assertEqual(expected, data)
                                 os.remove(result_fname)
 
diff --git a/tools/binman/btool/lz4.py b/tools/binman/btool/lz4.py
index d165f52da9..f09c5c8904 100644
--- a/tools/binman/btool/lz4.py
+++ b/tools/binman/btool/lz4.py
@@ -88,8 +88,8 @@ class Bintoollz4(bintool.Bintool):
             bytes: Compressed data
         """
         with tempfile.NamedTemporaryFile(prefix='comp.tmp',
-                                         dir=tools.GetOutputDir()) as tmp:
-            tools.WriteFile(tmp.name, indata)
+                                         dir=tools.get_output_dir()) as tmp:
+            tools.write_file(tmp.name, indata)
             args = ['--no-frame-crc', '-B4', '-5', '-c', tmp.name]
             return self.run_cmd(*args, binary=True)
 
@@ -103,8 +103,8 @@ class Bintoollz4(bintool.Bintool):
             bytes: Decompressed data
         """
         with tempfile.NamedTemporaryFile(prefix='decomp.tmp',
-                                         dir=tools.GetOutputDir()) as inf:
-            tools.WriteFile(inf.name, indata)
+                                         dir=tools.get_output_dir()) as inf:
+            tools.write_file(inf.name, indata)
             args = ['-cd', inf.name]
             return self.run_cmd(*args, binary=True)
 
diff --git a/tools/binman/btool/lzma_alone.py b/tools/binman/btool/lzma_alone.py
index d7c62dfd2a..52a960fd2f 100644
--- a/tools/binman/btool/lzma_alone.py
+++ b/tools/binman/btool/lzma_alone.py
@@ -65,13 +65,13 @@ class Bintoollzma_alone(bintool.Bintool):
             bytes: Compressed data
         """
         with tempfile.NamedTemporaryFile(prefix='comp.tmp',
-                                         dir=tools.GetOutputDir()) as inf:
-            tools.WriteFile(inf.name, indata)
+                                         dir=tools.get_output_dir()) as inf:
+            tools.write_file(inf.name, indata)
             with tempfile.NamedTemporaryFile(prefix='compo.otmp',
-                                             dir=tools.GetOutputDir()) as outf:
+                                             dir=tools.get_output_dir()) as outf:
                 args = ['e', inf.name, outf.name, '-lc1', '-lp0', '-pb0', '-d8']
                 self.run_cmd(*args, binary=True)
-                return tools.ReadFile(outf.name)
+                return tools.read_file(outf.name)
 
     def decompress(self, indata):
         """Decompress data with lzma_alone
@@ -83,13 +83,13 @@ class Bintoollzma_alone(bintool.Bintool):
             bytes: Decompressed data
         """
         with tempfile.NamedTemporaryFile(prefix='decomp.tmp',
-                                         dir=tools.GetOutputDir()) as inf:
-            tools.WriteFile(inf.name, indata)
+                                         dir=tools.get_output_dir()) as inf:
+            tools.write_file(inf.name, indata)
             with tempfile.NamedTemporaryFile(prefix='compo.otmp',
-                                             dir=tools.GetOutputDir()) as outf:
+                                             dir=tools.get_output_dir()) as outf:
                 args = ['d', inf.name, outf.name]
                 self.run_cmd(*args, binary=True)
-                return tools.ReadFile(outf.name, binary=True)
+                return tools.read_file(outf.name, binary=True)
 
     def fetch(self, method):
         """Fetch handler for lzma_alone
diff --git a/tools/binman/cbfs_util.py b/tools/binman/cbfs_util.py
index eea7868b16..9cad03886f 100644
--- a/tools/binman/cbfs_util.py
+++ b/tools/binman/cbfs_util.py
@@ -189,9 +189,9 @@ def _pack_string(instr):
     Returns:
         String with required padding (at least one 0x00 byte) at the end
     """
-    val = tools.ToBytes(instr)
+    val = tools.to_bytes(instr)
     pad_len = align_int(len(val) + 1, FILENAME_ALIGN)
-    return val + tools.GetBytes(0, pad_len - len(val))
+    return val + tools.get_bytes(0, pad_len - len(val))
 
 
 class CbfsFile(object):
@@ -371,7 +371,7 @@ class CbfsFile(object):
                                FILE_ATTR_TAG_COMPRESSION, ATTR_COMPRESSION_LEN,
                                self.compress, self.memlen)
         elif self.ftype == TYPE_EMPTY:
-            data = tools.GetBytes(self.erase_byte, self.size)
+            data = tools.get_bytes(self.erase_byte, self.size)
         else:
             raise ValueError('Unknown type %#x when writing\n' % self.ftype)
         if attr:
@@ -388,7 +388,7 @@ class CbfsFile(object):
                 # possible.
                 raise ValueError("Internal error: CBFS file '%s': Requested offset %#x but current output position is %#x" %
                                  (self.name, self.cbfs_offset, offset))
-            pad = tools.GetBytes(pad_byte, pad_len)
+            pad = tools.get_bytes(pad_byte, pad_len)
             hdr_len += pad_len
 
         # This is the offset of the start of the file's data,
@@ -414,7 +414,7 @@ class CbfsWriter(object):
     Usage is something like:
 
         cbw = CbfsWriter(size)
-        cbw.add_file_raw('u-boot', tools.ReadFile('u-boot.bin'))
+        cbw.add_file_raw('u-boot', tools.read_file('u-boot.bin'))
         ...
         data, cbfs_offset = cbw.get_data_and_offset()
 
@@ -482,7 +482,7 @@ class CbfsWriter(object):
         if fd.tell() > 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()))
+        fd.write(tools.get_bytes(self._erase_byte, offset - fd.tell()))
 
     def _pad_to(self, fd, offset):
         """Write out pad bytes and/or an empty file until a given offset
diff --git a/tools/binman/cbfs_util_test.py b/tools/binman/cbfs_util_test.py
index 494f6145ed..f86b295149 100755
--- a/tools/binman/cbfs_util_test.py
+++ b/tools/binman/cbfs_util_test.py
@@ -36,7 +36,7 @@ class TestCbfs(unittest.TestCase):
     def setUpClass(cls):
         # Create a temporary directory for test files
         cls._indir = tempfile.mkdtemp(prefix='cbfs_util.')
-        tools.SetInputDirs([cls._indir])
+        tools.set_input_dirs([cls._indir])
 
         # Set up some useful data files
         TestCbfs._make_input_file('u-boot.bin', U_BOOT_DATA)
@@ -45,7 +45,7 @@ class TestCbfs(unittest.TestCase):
 
         # Set up a temporary output directory, used by the tools library when
         # compressing files
-        tools.PrepareOutputDir(None)
+        tools.prepare_output_dir(None)
 
         cls.cbfstool = bintool.Bintool.create('cbfstool')
         cls.have_cbfstool = cls.cbfstool.is_present()
@@ -58,7 +58,7 @@ class TestCbfs(unittest.TestCase):
         if cls._indir:
             shutil.rmtree(cls._indir)
         cls._indir = None
-        tools.FinaliseOutputDir()
+        tools.finalise_output_dir()
 
     @classmethod
     def _make_input_file(cls, fname, contents):
@@ -71,7 +71,7 @@ class TestCbfs(unittest.TestCase):
             Full pathname of file created
         """
         pathname = os.path.join(cls._indir, fname)
-        tools.WriteFile(pathname, contents)
+        tools.write_file(pathname, contents)
         return pathname
 
     def _check_hdr(self, data, size, offset=0, arch=cbfs_util.ARCHITECTURE_X86):
@@ -176,12 +176,12 @@ class TestCbfs(unittest.TestCase):
             base = [(1 << 32) - size + b for b in base]
         self.cbfstool.add_raw(
             cbfs_fname, 'u-boot',
-            tools.GetInputFilename(compress and 'compress' or 'u-boot.bin'),
+            tools.get_input_filename(compress and 'compress' or 'u-boot.bin'),
             compress[0] if compress else None,
             base[0] if base else None)
         self.cbfstool.add_raw(
             cbfs_fname, 'u-boot-dtb',
-            tools.GetInputFilename(compress and 'compress' or 'u-boot.dtb'),
+            tools.get_input_filename(compress and 'compress' or 'u-boot.dtb'),
             compress[1] if compress else None,
             base[1] if base else None)
         return cbfs_fname
@@ -198,10 +198,10 @@ class TestCbfs(unittest.TestCase):
         """
         if not self.have_cbfstool or not self.have_lz4:
             return
-        expect = tools.ReadFile(cbfstool_fname)
+        expect = tools.read_file(cbfstool_fname)
         if expect != data:
-            tools.WriteFile('/tmp/expect', expect)
-            tools.WriteFile('/tmp/actual', data)
+            tools.write_file('/tmp/expect', expect)
+            tools.write_file('/tmp/actual', data)
             print('diff -y <(xxd -g1 /tmp/expect) <(xxd -g1 /tmp/actual) | colordiff')
             self.fail('cbfstool produced a different result')
 
@@ -482,7 +482,7 @@ class TestCbfs(unittest.TestCase):
 
         size = 0xb0
         cbw = CbfsWriter(size)
-        cbw.add_file_stage('u-boot', tools.ReadFile(elf_fname))
+        cbw.add_file_stage('u-boot', tools.read_file(elf_fname))
 
         data = cbw.get_data()
         cbfs = self._check_hdr(data, size)
diff --git a/tools/binman/control.py b/tools/binman/control.py
index 2daad05b80..305f14bad3 100644
--- a/tools/binman/control.py
+++ b/tools/binman/control.py
@@ -258,7 +258,7 @@ def ExtractEntries(image_fname, output_fname, outdir, entry_paths,
             raise ValueError('Must specify exactly one entry path to write with -f')
         entry = image.FindEntryPath(entry_paths[0])
         data = entry.ReadData(decomp, alt_format)
-        tools.WriteFile(output_fname, data)
+        tools.write_file(output_fname, data)
         tout.Notice("Wrote %#x bytes to file '%s'" % (len(data), output_fname))
         return
 
@@ -281,7 +281,7 @@ def ExtractEntries(image_fname, output_fname, outdir, entry_paths,
             fname = os.path.join(fname, 'root')
         tout.Notice("Write entry '%s' size %x to '%s'" %
                     (entry.GetPath(), len(data), fname))
-        tools.WriteFile(fname, data)
+        tools.write_file(fname, data)
     return einfos
 
 
@@ -398,7 +398,7 @@ def ReplaceEntries(image_fname, input_fname, indir, entry_paths,
         if len(entry_paths) != 1:
             raise ValueError('Must specify exactly one entry path to write with -f')
         entry = image.FindEntryPath(entry_paths[0])
-        data = tools.ReadFile(input_fname)
+        data = tools.read_file(input_fname)
         tout.Notice("Read %#x bytes from file '%s'" % (len(data), input_fname))
         WriteEntryToImage(image, entry, data, do_compress=do_compress,
                           allow_resize=allow_resize, write_map=write_map)
@@ -425,7 +425,7 @@ def ReplaceEntries(image_fname, input_fname, indir, entry_paths,
         if os.path.exists(fname):
             tout.Notice("Write entry '%s' from file '%s'" %
                         (entry.GetPath(), fname))
-            data = tools.ReadFile(fname)
+            data = tools.read_file(fname)
             ReplaceOneEntry(image, entry, data, do_compress, allow_resize)
         else:
             tout.Warning("Skipping entry '%s' from missing file '%s'" %
@@ -468,8 +468,8 @@ def PrepareImagesAndDtbs(dtb_fname, select_images, update_fdt, use_expanded):
     # output into a file in our output directly. Then scan it for use
     # in binman.
     dtb_fname = fdt_util.EnsureCompiled(dtb_fname)
-    fname = tools.GetOutputFilename('u-boot.dtb.out')
-    tools.WriteFile(fname, tools.ReadFile(dtb_fname))
+    fname = tools.get_output_filename('u-boot.dtb.out')
+    tools.write_file(fname, tools.read_file(dtb_fname))
     dtb = fdt.FdtScan(fname)
 
     node = _FindBinmanNode(dtb)
@@ -618,7 +618,7 @@ def Binman(args):
     global state
 
     if args.full_help:
-        tools.PrintFullHelp(
+        tools.print_full_help(
             os.path.join(os.path.dirname(os.path.realpath(sys.argv[0])), 'README.rst')
         )
         return 0
@@ -630,7 +630,7 @@ def Binman(args):
     if args.cmd in ['ls', 'extract', 'replace', 'tool']:
         try:
             tout.Init(args.verbosity)
-            tools.PrepareOutputDir(None)
+            tools.prepare_output_dir(None)
             if args.cmd == 'ls':
                 ListEntries(args.image, args.paths)
 
@@ -644,7 +644,7 @@ def Binman(args):
                                allow_resize=not args.fix_size, write_map=args.map)
 
             if args.cmd == 'tool':
-                tools.SetToolPaths(args.toolpath)
+                tools.set_tool_paths(args.toolpath)
                 if args.list:
                     bintool.Bintool.list_all()
                 elif args.fetch:
@@ -658,7 +658,7 @@ def Binman(args):
         except:
             raise
         finally:
-            tools.FinaliseOutputDir()
+            tools.finalise_output_dir()
         return 0
 
     elf_params = None
@@ -694,9 +694,9 @@ def Binman(args):
         # runtime.
         use_expanded = not args.no_expanded
         try:
-            tools.SetInputDirs(args.indir)
-            tools.PrepareOutputDir(args.outdir, args.preserve)
-            tools.SetToolPaths(args.toolpath)
+            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)
 
@@ -717,7 +717,7 @@ def Binman(args):
 
             # Write the updated FDTs to our output files
             for dtb_item in state.GetAllFdts():
-                tools.WriteFile(dtb_item._fname, dtb_item.GetContents())
+                tools.write_file(dtb_item._fname, dtb_item.GetContents())
 
             if elf_params:
                 data = state.GetFdtForEtype('u-boot-dtb').GetContents()
@@ -729,7 +729,7 @@ def Binman(args):
             # Use this to debug the time take to pack the image
             #state.TimingShow()
         finally:
-            tools.FinaliseOutputDir()
+            tools.finalise_output_dir()
     finally:
         tout.Uninit()
 
diff --git a/tools/binman/elf.py b/tools/binman/elf.py
index de2bb4651f..d22a0d4bf5 100644
--- a/tools/binman/elf.py
+++ b/tools/binman/elf.py
@@ -54,7 +54,7 @@ def GetSymbols(fname, patterns):
           key: Name of symbol
           value: Hex value of symbol
     """
-    stdout = tools.Run('objdump', '-t', fname)
+    stdout = tools.run('objdump', '-t', fname)
     lines = stdout.splitlines()
     if patterns:
         re_syms = re.compile('|'.join(patterns))
@@ -154,7 +154,7 @@ def LookupAndWriteSymbols(elf_fname, entry, section):
         entry: Entry to process
         section: Section which can be used to lookup symbol values
     """
-    fname = tools.GetInputFilename(elf_fname)
+    fname = tools.get_input_filename(elf_fname)
     syms = GetSymbols(fname, ['image', 'binman'])
     if not syms:
         return
@@ -282,7 +282,7 @@ SECTIONS
     #   text section at the start
     # -m32: Build for 32-bit x86
     # -T...: Specifies the link script, which sets the start address
-    cc, args = tools.GetTargetCompileTool('cc')
+    cc, args = tools.get_target_compile_tool('cc')
     args += ['-static', '-nostdlib', '-Wl,--build-id=none', '-m32', '-T',
             lds_file, '-o', elf_fname, s_file]
     stdout = command.Output(cc, *args)
@@ -363,9 +363,9 @@ def UpdateFile(infile, outfile, start_sym, end_sym, insert):
         raise ValueError("Not enough space in '%s' for data length %#x (%d); size is %#x (%d)" %
                          (infile, len(insert), len(insert), size, size))
 
-    data = tools.ReadFile(infile)
+    data = tools.read_file(infile)
     newdata = data[:syms[start_sym].offset]
-    newdata += insert + tools.GetBytes(0, size - len(insert))
+    newdata += insert + tools.get_bytes(0, size - len(insert))
     newdata += data[syms[end_sym].offset:]
-    tools.WriteFile(outfile, newdata)
+    tools.write_file(outfile, newdata)
     tout.Info('Written to offset %#x' % syms[start_sym].offset)
diff --git a/tools/binman/elf_test.py b/tools/binman/elf_test.py
index f727258487..b531062f4a 100644
--- a/tools/binman/elf_test.py
+++ b/tools/binman/elf_test.py
@@ -27,7 +27,7 @@ class FakeEntry:
     """
     def __init__(self, contents_size):
         self.contents_size = contents_size
-        self.data = tools.GetBytes(ord('a'), contents_size)
+        self.data = tools.get_bytes(ord('a'), contents_size)
 
     def GetPath(self):
         return 'entry_path'
@@ -72,7 +72,7 @@ def BuildElfTestFiles(target_dir):
     if 'MAKEFLAGS' in os.environ:
         del os.environ['MAKEFLAGS']
     try:
-        tools.Run('make', '-C', target_dir, '-f',
+        tools.run('make', '-C', target_dir, '-f',
                   os.path.join(testdir, 'Makefile'), 'SRC=%s/' % testdir)
     except ValueError as e:
         # The test system seems to suppress this in a strange way
@@ -83,7 +83,7 @@ class TestElf(unittest.TestCase):
     @classmethod
     def setUpClass(cls):
         cls._indir = tempfile.mkdtemp(prefix='elf.')
-        tools.SetInputDirs(['.'])
+        tools.set_input_dirs(['.'])
         BuildElfTestFiles(cls._indir)
 
     @classmethod
@@ -166,7 +166,7 @@ class TestElf(unittest.TestCase):
         section = FakeSection(sym_value=None)
         elf_fname = self.ElfTestFile('u_boot_binman_syms')
         syms = elf.LookupAndWriteSymbols(elf_fname, entry, section)
-        self.assertEqual(tools.GetBytes(255, 20) + tools.GetBytes(ord('a'), 4),
+        self.assertEqual(tools.get_bytes(255, 20) + tools.get_bytes(ord('a'), 4),
                                                                   entry.data)
 
     def testDebug(self):
@@ -193,7 +193,7 @@ class TestElf(unittest.TestCase):
         # Make an Elf file and then convert it to a fkat binary file. This
         # should produce the original data.
         elf.MakeElf(elf_fname, expected_text, expected_data)
-        objcopy, args = tools.GetTargetCompileTool('objcopy')
+        objcopy, args = tools.get_target_compile_tool('objcopy')
         args += ['-O', 'binary', elf_fname, bin_fname]
         stdout = command.Output(objcopy, *args)
         with open(bin_fname, 'rb') as fd:
@@ -210,7 +210,7 @@ class TestElf(unittest.TestCase):
         expected_data = b'wxyz'
         elf_fname = os.path.join(outdir, 'elf')
         elf.MakeElf(elf_fname, expected_text, expected_data)
-        data = tools.ReadFile(elf_fname)
+        data = tools.read_file(elf_fname)
 
         load = 0xfef20000
         entry = load + 2
@@ -231,7 +231,7 @@ class TestElf(unittest.TestCase):
         offset = elf.GetSymbolFileOffset(fname, ['embed_start', 'embed_end'])
         start = offset['embed_start'].offset
         end = offset['embed_end'].offset
-        data = tools.ReadFile(fname)
+        data = tools.read_file(fname)
         embed_data = data[start:end]
         expect = struct.pack('<III', 0x1234, 0x5678, 0)
         self.assertEqual(expect, embed_data)
diff --git a/tools/binman/entry.py b/tools/binman/entry.py
index 08770ec5f0..07a2713288 100644
--- a/tools/binman/entry.py
+++ b/tools/binman/entry.py
@@ -14,7 +14,7 @@ from binman import bintool
 from binman import comp_util
 from dtoc import fdt_util
 from patman import tools
-from patman.tools import ToHex, ToHexSize
+from patman.tools import to_hex, to_hex_size
 from patman import tout
 
 modules = {}
@@ -244,7 +244,7 @@ class Entry(object):
         self.uncomp_size = fdt_util.GetInt(self._node, 'uncomp-size')
 
         self.align = fdt_util.GetInt(self._node, 'align')
-        if tools.NotPowerOfTwo(self.align):
+        if tools.not_power_of_two(self.align):
             raise ValueError("Node '%s': Alignment %s must be a power of two" %
                              (self._node.path, self.align))
         if self.section and self.align is None:
@@ -252,7 +252,7 @@ class Entry(object):
         self.pad_before = fdt_util.GetInt(self._node, 'pad-before', 0)
         self.pad_after = fdt_util.GetInt(self._node, 'pad-after', 0)
         self.align_size = fdt_util.GetInt(self._node, 'align-size')
-        if tools.NotPowerOfTwo(self.align_size):
+        if tools.not_power_of_two(self.align_size):
             self.Raise("Alignment size %s must be a power of two" %
                        self.align_size)
         self.align_end = fdt_util.GetInt(self._node, 'align-end')
@@ -397,12 +397,12 @@ class Entry(object):
 
             # Don't let the data shrink. Pad it if necessary
             if size_ok and new_size < self.contents_size:
-                data += tools.GetBytes(0, self.contents_size - new_size)
+                data += tools.get_bytes(0, self.contents_size - new_size)
 
         if not size_ok:
             tout.Debug("Entry '%s' size change from %s to %s" % (
-                self._node.path, ToHex(self.contents_size),
-                ToHex(new_size)))
+                self._node.path, to_hex(self.contents_size),
+                to_hex(new_size)))
         self.SetContents(data)
         return size_ok
 
@@ -419,8 +419,8 @@ class Entry(object):
     def ResetForPack(self):
         """Reset offset/size fields so that packing can be done again"""
         self.Detail('ResetForPack: offset %s->%s, size %s->%s' %
-                    (ToHex(self.offset), ToHex(self.orig_offset),
-                     ToHex(self.size), ToHex(self.orig_size)))
+                    (to_hex(self.offset), to_hex(self.orig_offset),
+                     to_hex(self.size), to_hex(self.orig_size)))
         self.pre_reset_size = self.size
         self.offset = self.orig_offset
         self.size = self.orig_size
@@ -444,20 +444,20 @@ class Entry(object):
             New section offset pointer (after this entry)
         """
         self.Detail('Packing: offset=%s, size=%s, content_size=%x' %
-                    (ToHex(self.offset), ToHex(self.size),
+                    (to_hex(self.offset), to_hex(self.size),
                      self.contents_size))
         if self.offset is None:
             if self.offset_unset:
                 self.Raise('No offset set with offset-unset: should another '
                            'entry provide this correct offset?')
-            self.offset = tools.Align(offset, self.align)
+            self.offset = tools.align(offset, self.align)
         needed = self.pad_before + self.contents_size + self.pad_after
-        needed = tools.Align(needed, self.align_size)
+        needed = tools.align(needed, self.align_size)
         size = self.size
         if not size:
             size = needed
         new_offset = self.offset + size
-        aligned_offset = tools.Align(new_offset, self.align_end)
+        aligned_offset = tools.align(new_offset, self.align_end)
         if aligned_offset != new_offset:
             size = aligned_offset - self.offset
             new_offset = aligned_offset
@@ -471,10 +471,10 @@ class Entry(object):
         # Check that the alignment is correct. It could be wrong if the
         # and offset or size values were provided (i.e. not calculated), but
         # conflict with the provided alignment values
-        if self.size != tools.Align(self.size, self.align_size):
+        if self.size != tools.align(self.size, self.align_size):
             self.Raise("Size %#x (%d) does not match align-size %#x (%d)" %
                   (self.size, self.size, self.align_size, self.align_size))
-        if self.offset != tools.Align(self.offset, self.align):
+        if self.offset != tools.align(self.offset, self.align):
             self.Raise("Offset %#x (%d) does not match align %#x (%d)" %
                   (self.offset, self.offset, self.align, self.align))
         self.Detail('   - packed: offset=%#x, size=%#x, content_size=%#x, next_offset=%x' %
@@ -541,7 +541,7 @@ class Entry(object):
             bytes content of the entry, excluding any padding. If the entry is
                 compressed, the compressed data is returned
         """
-        self.Detail('GetData: size %s' % ToHexSize(self.data))
+        self.Detail('GetData: size %s' % to_hex_size(self.data))
         return self.data
 
     def GetPaddedData(self, data=None):
@@ -991,7 +991,7 @@ features to produce new behaviours.
             fname (str): Filename of faked file
         """
         if self.allow_fake and not pathlib.Path(fname).is_file():
-            outfname = tools.GetOutputFilename(os.path.basename(fname))
+            outfname = tools.get_output_filename(os.path.basename(fname))
             with open(outfname, "wb") as out:
                 out.truncate(1024)
             self.faked = True
diff --git a/tools/binman/entry_test.py b/tools/binman/entry_test.py
index 1b59c9056e..7ed9b262bb 100644
--- a/tools/binman/entry_test.py
+++ b/tools/binman/entry_test.py
@@ -17,10 +17,10 @@ from patman import tools
 
 class TestEntry(unittest.TestCase):
     def setUp(self):
-        tools.PrepareOutputDir(None)
+        tools.prepare_output_dir(None)
 
     def tearDown(self):
-        tools.FinaliseOutputDir()
+        tools.finalise_output_dir()
 
     def GetNode(self):
         binman_dir = os.path.dirname(os.path.realpath(sys.argv[0]))
diff --git a/tools/binman/etype/atf_fip.py b/tools/binman/etype/atf_fip.py
index 07e6c645b0..6ecd95b71f 100644
--- a/tools/binman/etype/atf_fip.py
+++ b/tools/binman/etype/atf_fip.py
@@ -181,7 +181,7 @@ class Entry_atf_fip(Entry_section):
         self._pad_byte = fdt_util.GetInt(self._node, 'pad-byte', 0)
         self._fip_flags = fdt_util.GetInt64(self._node, 'fip-hdr-flags', 0)
         self._fip_align = fdt_util.GetInt(self._node, 'fip-align', 1)
-        if tools.NotPowerOfTwo(self._fip_align):
+        if tools.not_power_of_two(self._fip_align):
             raise ValueError("Node '%s': FIP alignment %s must be a power of two" %
                              (self._node.path, self._fip_align))
         self.ReadEntries()
diff --git a/tools/binman/etype/blob.py b/tools/binman/etype/blob.py
index 59728f368e..25ec5d26c9 100644
--- a/tools/binman/etype/blob.py
+++ b/tools/binman/etype/blob.py
@@ -37,7 +37,7 @@ class Entry_blob(Entry):
 
     def ObtainContents(self):
         self._filename = self.GetDefaultFilename()
-        self._pathname = tools.GetInputFilename(self._filename,
+        self._pathname = tools.get_input_filename(self._filename,
             self.external and self.section.GetAllowMissing())
         # Allow the file to be missing
         if not self._pathname:
@@ -68,7 +68,7 @@ class Entry_blob(Entry):
             bytes: Data read
         """
         state.TimingStart('read')
-        indata = tools.ReadFile(pathname)
+        indata = tools.read_file(pathname)
         state.TimingAccum('read')
         state.TimingStart('compress')
         data = self.CompressData(indata)
diff --git a/tools/binman/etype/blob_ext_list.py b/tools/binman/etype/blob_ext_list.py
index 29c9092dc3..76ad32a1ee 100644
--- a/tools/binman/etype/blob_ext_list.py
+++ b/tools/binman/etype/blob_ext_list.py
@@ -38,7 +38,7 @@ class Entry_blob_ext_list(Entry_blob):
         pathnames = []
         for fname in self._filenames:
             fname = self.check_fake_fname(fname)
-            pathname = tools.GetInputFilename(
+            pathname = tools.get_input_filename(
                 fname, self.external and self.section.GetAllowMissing())
             # Allow the file to be missing
             if not pathname:
diff --git a/tools/binman/etype/fdtmap.py b/tools/binman/etype/fdtmap.py
index aaaf2de438..76e8dbe818 100644
--- a/tools/binman/etype/fdtmap.py
+++ b/tools/binman/etype/fdtmap.py
@@ -140,7 +140,7 @@ class Entry_fdtmap(Entry):
             fdt.pack()
             outfdt = Fdt.FromData(fdt.as_bytearray())
             data = outfdt.GetContents()
-        data = FDTMAP_MAGIC + tools.GetBytes(0, 8) + data
+        data = FDTMAP_MAGIC + tools.get_bytes(0, 8) + data
         return data
 
     def ObtainContents(self):
diff --git a/tools/binman/etype/files.py b/tools/binman/etype/files.py
index 927d0f071d..0650a69c55 100644
--- a/tools/binman/etype/files.py
+++ b/tools/binman/etype/files.py
@@ -47,7 +47,7 @@ class Entry_files(Entry_section):
                                                 'require-matches')
 
     def ExpandEntries(self):
-        files = tools.GetInputFilenameGlob(self._pattern)
+        files = tools.get_input_filename_glob(self._pattern)
         if self._require_matches and not files:
             self.Raise("Pattern '%s' matched no files" % self._pattern)
         for fname in files:
diff --git a/tools/binman/etype/fill.py b/tools/binman/etype/fill.py
index efb2d13e91..cd38279919 100644
--- a/tools/binman/etype/fill.py
+++ b/tools/binman/etype/fill.py
@@ -31,5 +31,5 @@ class Entry_fill(Entry):
         self.fill_value = fdt_util.GetByte(self._node, 'fill-byte', 0)
 
     def ObtainContents(self):
-        self.SetContents(tools.GetBytes(self.fill_value, self.size))
+        self.SetContents(tools.get_bytes(self.fill_value, self.size))
         return True
diff --git a/tools/binman/etype/fit.py b/tools/binman/etype/fit.py
index 6ad4a686df..954cbc3d85 100644
--- a/tools/binman/etype/fit.py
+++ b/tools/binman/etype/fit.py
@@ -200,19 +200,19 @@ class Entry_fit(Entry):
                         for seq, fdt_fname in enumerate(self._fdts):
                             node_name = subnode.name[1:].replace('SEQ',
                                                                  str(seq + 1))
-                            fname = tools.GetInputFilename(fdt_fname + '.dtb')
+                            fname = tools.get_input_filename(fdt_fname + '.dtb')
                             with fsw.add_node(node_name):
                                 for pname, prop in subnode.props.items():
                                     val = prop.bytes.replace(
-                                        b'NAME', tools.ToBytes(fdt_fname))
+                                        b'NAME', tools.to_bytes(fdt_fname))
                                     val = val.replace(
-                                        b'SEQ', tools.ToBytes(str(seq + 1)))
+                                        b'SEQ', tools.to_bytes(str(seq + 1)))
                                     fsw.property(pname, val)
 
                                 # Add data for 'fdt' nodes (but not 'config')
                                 if depth == 1 and in_images:
                                     fsw.property('data',
-                                                 tools.ReadFile(fname))
+                                                 tools.read_file(fname))
                     else:
                         if self._fdts is None:
                             if self._fit_list_prop:
@@ -246,10 +246,10 @@ class Entry_fit(Entry):
         # self._BuildInput() either returns bytes or raises an exception.
         data = self._BuildInput(self._fdt)
         uniq = self.GetUniqueName()
-        input_fname = tools.GetOutputFilename('%s.itb' % uniq)
-        output_fname = tools.GetOutputFilename('%s.fit' % uniq)
-        tools.WriteFile(input_fname, data)
-        tools.WriteFile(output_fname, data)
+        input_fname = tools.get_output_filename('%s.itb' % uniq)
+        output_fname = tools.get_output_filename('%s.fit' % uniq)
+        tools.write_file(input_fname, data)
+        tools.write_file(output_fname, data)
 
         args = {}
         ext_offset = self._fit_props.get('fit,external-offset')
@@ -260,11 +260,11 @@ class Entry_fit(Entry):
                 }
         if self.mkimage.run(reset_timestamp=True, output_fname=output_fname,
                             **args) is not None:
-            self.SetContents(tools.ReadFile(output_fname))
+            self.SetContents(tools.read_file(output_fname))
         else:
             # Bintool is missing; just use empty data as the output
             self.record_missing_bintool(self.mkimage)
-            self.SetContents(tools.GetBytes(0, 1024))
+            self.SetContents(tools.get_bytes(0, 1024))
 
         return True
 
diff --git a/tools/binman/etype/fmap.py b/tools/binman/etype/fmap.py
index cac99b60eb..72b44a7869 100644
--- a/tools/binman/etype/fmap.py
+++ b/tools/binman/etype/fmap.py
@@ -8,7 +8,7 @@
 from binman.entry import Entry
 from binman import fmap_util
 from patman import tools
-from patman.tools import ToHexSize
+from patman.tools import to_hex_size
 from patman import tout
 
 
@@ -47,7 +47,7 @@ class Entry_fmap(Entry):
         def _AddEntries(areas, entry):
             entries = entry.GetEntries()
             tout.Debug("fmap: Add entry '%s' type '%s' (%s subentries)" %
-                       (entry.GetPath(), entry.etype, ToHexSize(entries)))
+                       (entry.GetPath(), entry.etype, to_hex_size(entries)))
             if entries and entry.etype != 'cbfs':
                 # Create an area for the section, which encompasses all entries
                 # within it
diff --git a/tools/binman/etype/gbb.py b/tools/binman/etype/gbb.py
index ca8af1be42..e32fae27ce 100644
--- a/tools/binman/etype/gbb.py
+++ b/tools/binman/etype/gbb.py
@@ -70,14 +70,14 @@ class Entry_gbb(Entry):
 
     def ObtainContents(self):
         gbb = 'gbb.bin'
-        fname = tools.GetOutputFilename(gbb)
+        fname = tools.get_output_filename(gbb)
         if not self.size:
             self.Raise('GBB must have a fixed size')
         gbb_size = self.size
         bmpfv_size = gbb_size - 0x2180
         if bmpfv_size < 0:
             self.Raise('GBB is too small (minimum 0x2180 bytes)')
-        keydir = tools.GetInputFilename(self.keydir)
+        keydir = tools.get_input_filename(self.keydir)
 
         stdout = self.futility.gbb_create(
             fname, [0x100, 0x1000, bmpfv_size, 0x1000])
@@ -88,14 +88,14 @@ class Entry_gbb(Entry):
                 rootkey='%s/root_key.vbpubk' % keydir,
                 recoverykey='%s/recovery_key.vbpubk' % keydir,
                 flags=self.gbb_flags,
-                bmpfv=tools.GetInputFilename(self.bmpblk))
+                bmpfv=tools.get_input_filename(self.bmpblk))
 
         if stdout is not None:
-            self.SetContents(tools.ReadFile(fname))
+            self.SetContents(tools.read_file(fname))
         else:
             # Bintool is missing; just use the required amount of zero data
             self.record_missing_bintool(self.futility)
-            self.SetContents(tools.GetBytes(0, gbb_size))
+            self.SetContents(tools.get_bytes(0, gbb_size))
 
         return True
 
diff --git a/tools/binman/etype/intel_ifwi.py b/tools/binman/etype/intel_ifwi.py
index ed14046ba6..46bdf116e6 100644
--- a/tools/binman/etype/intel_ifwi.py
+++ b/tools/binman/etype/intel_ifwi.py
@@ -58,11 +58,11 @@ class Entry_intel_ifwi(Entry_blob_ext):
         # Create the IFWI file if needed
         if self._convert_fit:
             inname = self._pathname
-            outname = tools.GetOutputFilename('ifwi.bin')
+            outname = tools.get_output_filename('ifwi.bin')
             if self.ifwitool.create_ifwi(inname, outname) is None:
                 # Bintool is missing; just create a zeroed ifwi.bin
                 self.record_missing_bintool(self.ifwitool)
-                self.SetContents(tools.GetBytes(0, 1024))
+                self.SetContents(tools.get_bytes(0, 1024))
 
             self._filename = 'ifwi.bin'
             self._pathname = outname
@@ -74,15 +74,15 @@ class Entry_intel_ifwi(Entry_blob_ext):
         if self.ifwitool.delete_subpart(outname, 'OBBP') is None:
             # Bintool is missing; just use zero data
             self.record_missing_bintool(self.ifwitool)
-            self.SetContents(tools.GetBytes(0, 1024))
+            self.SetContents(tools.get_bytes(0, 1024))
             return True
 
         for entry in self._ifwi_entries.values():
             # First get the input data and put it in a file
             data = entry.GetPaddedData()
             uniq = self.GetUniqueName()
-            input_fname = tools.GetOutputFilename('input.%s' % uniq)
-            tools.WriteFile(input_fname, data)
+            input_fname = tools.get_output_filename('input.%s' % uniq)
+            tools.write_file(input_fname, data)
 
             # At this point we know that ifwitool is present, so we don't need
             # to check for None here
@@ -107,7 +107,7 @@ class Entry_intel_ifwi(Entry_blob_ext):
         After that we delete the OBBP sub-partition and add each of the files
         that we want in the IFWI file, one for each sub-entry of the IWFI node.
         """
-        self._pathname = tools.GetInputFilename(self._filename,
+        self._pathname = tools.get_input_filename(self._filename,
                                                 self.section.GetAllowMissing())
         # Allow the file to be missing
         if not self._pathname:
diff --git a/tools/binman/etype/mkimage.py b/tools/binman/etype/mkimage.py
index 201ee4b569..baa16f36f3 100644
--- a/tools/binman/etype/mkimage.py
+++ b/tools/binman/etype/mkimage.py
@@ -48,12 +48,12 @@ class Entry_mkimage(Entry):
                 return False
             data += entry.GetData()
         uniq = self.GetUniqueName()
-        input_fname = tools.GetOutputFilename('mkimage.%s' % uniq)
-        tools.WriteFile(input_fname, data)
-        output_fname = tools.GetOutputFilename('mkimage-out.%s' % uniq)
+        input_fname = tools.get_output_filename('mkimage.%s' % uniq)
+        tools.write_file(input_fname, data)
+        output_fname = tools.get_output_filename('mkimage-out.%s' % uniq)
         if self.mkimage.run_cmd('-d', input_fname, *self._args,
                                 output_fname) is not None:
-            self.SetContents(tools.ReadFile(output_fname))
+            self.SetContents(tools.read_file(output_fname))
         else:
             # Bintool is missing; just use the input data as the output
             self.record_missing_bintool(self.mkimage)
diff --git a/tools/binman/etype/section.py b/tools/binman/etype/section.py
index bb375e9063..b3d7302394 100644
--- a/tools/binman/etype/section.py
+++ b/tools/binman/etype/section.py
@@ -19,7 +19,7 @@ from binman import state
 from dtoc import fdt_util
 from patman import tools
 from patman import tout
-from patman.tools import ToHexSize
+from patman.tools import to_hex_size
 
 
 class Entry_section(Entry):
@@ -269,19 +269,19 @@ class Entry_section(Entry):
         data = bytearray()
         # Handle padding before the entry
         if entry.pad_before:
-            data += tools.GetBytes(self._pad_byte, entry.pad_before)
+            data += tools.get_bytes(self._pad_byte, entry.pad_before)
 
         # Add in the actual entry data
         data += entry_data
 
         # Handle padding after the entry
         if entry.pad_after:
-            data += tools.GetBytes(self._pad_byte, entry.pad_after)
+            data += tools.get_bytes(self._pad_byte, entry.pad_after)
 
         if entry.size:
-            data += tools.GetBytes(pad_byte, entry.size - len(data))
+            data += tools.get_bytes(pad_byte, entry.size - len(data))
 
-        self.Detail('GetPaddedDataForEntry: size %s' % ToHexSize(self.data))
+        self.Detail('GetPaddedDataForEntry: size %s' % to_hex_size(self.data))
 
         return data
 
@@ -316,7 +316,7 @@ class Entry_section(Entry):
             # Handle empty space before the entry
             pad = (entry.offset or 0) - self._skip_at_start - len(section_data)
             if pad > 0:
-                section_data += tools.GetBytes(self._pad_byte, pad)
+                section_data += tools.get_bytes(self._pad_byte, pad)
 
             # Add in the actual entry data
             section_data += data
@@ -709,14 +709,14 @@ class Entry_section(Entry):
         if not size:
             data = self.GetPaddedData(self.data)
             size = len(data)
-            size = tools.Align(size, self.align_size)
+            size = tools.align(size, self.align_size)
 
         if self.size and contents_size > self.size:
             self._Raise("contents size %#x (%d) exceeds section size %#x (%d)" %
                         (contents_size, contents_size, self.size, self.size))
         if not self.size:
             self.size = size
-        if self.size != tools.Align(self.size, self.align_size):
+        if self.size != tools.align(self.size, self.align_size):
             self._Raise("Size %#x (%d) does not match align-size %#x (%d)" %
                         (self.size, self.size, self.align_size,
                          self.align_size))
diff --git a/tools/binman/etype/text.py b/tools/binman/etype/text.py
index 45dfcc401e..c55e0233b1 100644
--- a/tools/binman/etype/text.py
+++ b/tools/binman/etype/text.py
@@ -60,14 +60,14 @@ class Entry_text(Entry):
         super().__init__(section, etype, node)
         value = fdt_util.GetString(self._node, 'text')
         if value:
-            value = tools.ToBytes(value)
+            value = tools.to_bytes(value)
         else:
             label, = self.GetEntryArgsOrProps([EntryArg('text-label', str)])
             self.text_label = label
             if self.text_label:
                 value, = self.GetEntryArgsOrProps([EntryArg(self.text_label,
                                                             str)])
-                value = tools.ToBytes(value) if value is not None else value
+                value = tools.to_bytes(value) if value is not None else value
         self.value = value
 
     def ObtainContents(self):
diff --git a/tools/binman/etype/u_boot_elf.py b/tools/binman/etype/u_boot_elf.py
index 6614a75faf..3ec774f38a 100644
--- a/tools/binman/etype/u_boot_elf.py
+++ b/tools/binman/etype/u_boot_elf.py
@@ -27,9 +27,9 @@ class Entry_u_boot_elf(Entry_blob):
     def ReadBlobContents(self):
         if self._strip:
             uniq = self.GetUniqueName()
-            out_fname = tools.GetOutputFilename('%s.stripped' % uniq)
-            tools.WriteFile(out_fname, tools.ReadFile(self._pathname))
-            tools.Run('strip', out_fname)
+            out_fname = tools.get_output_filename('%s.stripped' % uniq)
+            tools.write_file(out_fname, tools.read_file(self._pathname))
+            tools.run('strip', out_fname)
             self._pathname = out_fname
         super().ReadBlobContents()
         return True
diff --git a/tools/binman/etype/u_boot_env.py b/tools/binman/etype/u_boot_env.py
index 1694c2a6ee..c38340b256 100644
--- a/tools/binman/etype/u_boot_env.py
+++ b/tools/binman/etype/u_boot_env.py
@@ -27,7 +27,7 @@ class Entry_u_boot_env(Entry_blob):
         self.fill_value = fdt_util.GetByte(self._node, 'fill-byte', 0)
 
     def ReadBlobContents(self):
-        indata = tools.ReadFile(self._pathname)
+        indata = tools.read_file(self._pathname)
         data = b''
         for line in indata.splitlines():
             data += line + b'\0'
@@ -35,7 +35,7 @@ class Entry_u_boot_env(Entry_blob):
         pad = self.size - len(data) - 5
         if pad < 0:
             self.Raise("'u-boot-env' entry too small to hold data (need %#x more bytes)" % -pad)
-        data += tools.GetBytes(self.fill_value, pad)
+        data += tools.get_bytes(self.fill_value, pad)
         crc = zlib.crc32(data)
         buf = struct.pack('<I', crc) + b'\x01' + data
         self.SetContents(buf)
diff --git a/tools/binman/etype/u_boot_spl_bss_pad.py b/tools/binman/etype/u_boot_spl_bss_pad.py
index 18c5596bd3..680d198305 100644
--- a/tools/binman/etype/u_boot_spl_bss_pad.py
+++ b/tools/binman/etype/u_boot_spl_bss_pad.py
@@ -36,9 +36,9 @@ class Entry_u_boot_spl_bss_pad(Entry_blob):
         super().__init__(section, etype, node)
 
     def ObtainContents(self):
-        fname = tools.GetInputFilename('spl/u-boot-spl')
+        fname = tools.get_input_filename('spl/u-boot-spl')
         bss_size = elf.GetSymbolAddress(fname, '__bss_size')
         if not bss_size:
             self.Raise('Expected __bss_size symbol in spl/u-boot-spl')
-        self.SetContents(tools.GetBytes(0, bss_size))
+        self.SetContents(tools.get_bytes(0, bss_size))
         return True
diff --git a/tools/binman/etype/u_boot_tpl_bss_pad.py b/tools/binman/etype/u_boot_tpl_bss_pad.py
index 521b24a384..47f4b23f35 100644
--- a/tools/binman/etype/u_boot_tpl_bss_pad.py
+++ b/tools/binman/etype/u_boot_tpl_bss_pad.py
@@ -36,9 +36,9 @@ class Entry_u_boot_tpl_bss_pad(Entry_blob):
         super().__init__(section, etype, node)
 
     def ObtainContents(self):
-        fname = tools.GetInputFilename('tpl/u-boot-tpl')
+        fname = tools.get_input_filename('tpl/u-boot-tpl')
         bss_size = elf.GetSymbolAddress(fname, '__bss_size')
         if not bss_size:
             self.Raise('Expected __bss_size symbol in tpl/u-boot-tpl')
-        self.SetContents(tools.GetBytes(0, bss_size))
+        self.SetContents(tools.get_bytes(0, bss_size))
         return True
diff --git a/tools/binman/etype/u_boot_ucode.py b/tools/binman/etype/u_boot_ucode.py
index b4cb8cdb6e..6945411cf9 100644
--- a/tools/binman/etype/u_boot_ucode.py
+++ b/tools/binman/etype/u_boot_ucode.py
@@ -92,8 +92,8 @@ class Entry_u_boot_ucode(Entry_blob):
             return True
 
         # Write it out to a file
-        self._pathname = tools.GetOutputFilename('u-boot-ucode.bin')
-        tools.WriteFile(self._pathname, fdt_entry.ucode_data)
+        self._pathname = tools.get_output_filename('u-boot-ucode.bin')
+        tools.write_file(self._pathname, fdt_entry.ucode_data)
 
         self.ReadBlobContents()
 
diff --git a/tools/binman/etype/u_boot_with_ucode_ptr.py b/tools/binman/etype/u_boot_with_ucode_ptr.py
index 20be22a1fd..a5fd2d1ca5 100644
--- a/tools/binman/etype/u_boot_with_ucode_ptr.py
+++ b/tools/binman/etype/u_boot_with_ucode_ptr.py
@@ -38,7 +38,7 @@ class Entry_u_boot_with_ucode_ptr(Entry_blob):
 
     def ProcessFdt(self, fdt):
         # Figure out where to put the microcode pointer
-        fname = tools.GetInputFilename(self.elf_fname)
+        fname = tools.get_input_filename(self.elf_fname)
         sym = elf.GetSymbolAddress(fname, '_dt_ucode_base_size')
         if sym:
            self.target_offset = sym
diff --git a/tools/binman/etype/vblock.py b/tools/binman/etype/vblock.py
index 8bbba273ab..a1de98290b 100644
--- a/tools/binman/etype/vblock.py
+++ b/tools/binman/etype/vblock.py
@@ -65,9 +65,9 @@ class Entry_vblock(Entry_collection):
             return None
 
         uniq = self.GetUniqueName()
-        output_fname = tools.GetOutputFilename('vblock.%s' % uniq)
-        input_fname = tools.GetOutputFilename('input.%s' % uniq)
-        tools.WriteFile(input_fname, input_data)
+        output_fname = tools.get_output_filename('vblock.%s' % uniq)
+        input_fname = tools.get_output_filename('input.%s' % uniq)
+        tools.write_file(input_fname, input_data)
         prefix = self.keydir + '/'
         stdout = self.futility.sign_firmware(
             vblock=output_fname,
@@ -78,11 +78,11 @@ class Entry_vblock(Entry_collection):
             kernelkey=prefix + self.kernelkey,
             flags=f'{self.preamble_flags}')
         if stdout is not None:
-            data = tools.ReadFile(output_fname)
+            data = tools.read_file(output_fname)
         else:
             # Bintool is missing; just use 4KB of zero data
             self.record_missing_bintool(self.futility)
-            data = tools.GetBytes(0, 4096)
+            data = tools.get_bytes(0, 4096)
         return data
 
     def ObtainContents(self):
diff --git a/tools/binman/fdt_test.py b/tools/binman/fdt_test.py
index 3e12540f62..94347b1a1e 100644
--- a/tools/binman/fdt_test.py
+++ b/tools/binman/fdt_test.py
@@ -19,11 +19,11 @@ class TestFdt(unittest.TestCase):
     def setUpClass(self):
         self._binman_dir = os.path.dirname(os.path.realpath(sys.argv[0]))
         self._indir = tempfile.mkdtemp(prefix='binmant.')
-        tools.PrepareOutputDir(self._indir, True)
+        tools.prepare_output_dir(self._indir, True)
 
     @classmethod
     def tearDownClass(self):
-        tools._FinaliseForTest()
+        tools._finalise_for_test()
 
     def TestFile(self, fname):
         return os.path.join(self._binman_dir, 'test', fname)
diff --git a/tools/binman/fip_util.py b/tools/binman/fip_util.py
index 868d0b6b16..95eee32bc0 100755
--- a/tools/binman/fip_util.py
+++ b/tools/binman/fip_util.py
@@ -248,7 +248,7 @@ class FipEntry:
         self.flags = flags
         self.fip_type = None
         self.data = None
-        self.valid = uuid != tools.GetBytes(0, UUID_LEN)
+        self.valid = uuid != tools.get_bytes(0, UUID_LEN)
         if self.valid:
             # Look up the friendly name
             matches = {val for (key, val) in FIP_TYPES.items()
@@ -309,7 +309,7 @@ class FipWriter:
     Usage is something like:
 
         fip = FipWriter(size)
-        fip.add_entry('scp-fwu-cfg', tools.ReadFile('something.bin'))
+        fip.add_entry('scp-fwu-cfg', tools.read_file('something.bin'))
         ...
         data = cbw.get_data()
 
@@ -354,7 +354,7 @@ class FipWriter:
         offset += ENTRY_SIZE   # terminating entry
 
         for fent in self._fip_entries:
-            offset = tools.Align(offset, self._align)
+            offset = tools.align(offset, self._align)
             fent.offset = offset
             offset += fent.size
 
@@ -443,7 +443,7 @@ def parse_macros(srcdir):
     re_uuid = re.compile('0x[0-9a-fA-F]{2}')
     re_comment = re.compile(r'^/\* (.*) \*/$')
     fname = os.path.join(srcdir, 'include/tools_share/firmware_image_package.h')
-    data = tools.ReadFile(fname, binary=False)
+    data = tools.read_file(fname, binary=False)
     macros = collections.OrderedDict()
     comment = None
     for linenum, line in enumerate(data.splitlines()):
@@ -489,7 +489,7 @@ def parse_names(srcdir):
     re_data = re.compile(r'\.name = "([^"]*)",\s*\.uuid = (UUID_\w*),\s*\.cmdline_name = "([^"]+)"',
                          re.S)
     fname = os.path.join(srcdir, 'tools/fiptool/tbbr_config.c')
-    data = tools.ReadFile(fname, binary=False)
+    data = tools.read_file(fname, binary=False)
 
     # Example entry:
     #   {
@@ -574,21 +574,21 @@ def parse_atf_source(srcdir, dstfile, oldfile):
         raise ValueError(
             f"Expected file '{readme_fname}' - try using -s to specify the "
             'arm-trusted-firmware directory')
-    readme = tools.ReadFile(readme_fname, binary=False)
+    readme = tools.read_file(readme_fname, binary=False)
     first_line = 'Trusted Firmware-A'
     if readme.splitlines()[0] != first_line:
         raise ValueError(f"'{readme_fname}' does not start with '{first_line}'")
     macros = parse_macros(srcdir)
     names = parse_names(srcdir)
     output = create_code_output(macros, names)
-    orig = tools.ReadFile(oldfile, binary=False)
+    orig = tools.read_file(oldfile, binary=False)
     re_fip_list = re.compile(r'(.*FIP_TYPE_LIST = \[).*?(    ] # end.*)', re.S)
     mat = re_fip_list.match(orig)
     new_code = mat.group(1) + '\n' + output + mat.group(2) if mat else output
     if new_code == orig:
         print(f"Existing code in '{oldfile}' is up-to-date")
     else:
-        tools.WriteFile(dstfile, new_code, binary=False)
+        tools.write_file(dstfile, new_code, binary=False)
         print(f'Needs update, try:\n\tmeld {dstfile} {oldfile}')
 
 
diff --git a/tools/binman/fip_util_test.py b/tools/binman/fip_util_test.py
index 4d2093b3a4..cf6d0002ec 100755
--- a/tools/binman/fip_util_test.py
+++ b/tools/binman/fip_util_test.py
@@ -35,14 +35,14 @@ class TestFip(unittest.TestCase):
     def setUp(self):
         # Create a temporary directory for test files
         self._indir = tempfile.mkdtemp(prefix='fip_util.')
-        tools.SetInputDirs([self._indir])
+        tools.set_input_dirs([self._indir])
 
         # Set up a temporary output directory, used by the tools library when
         # compressing files
-        tools.PrepareOutputDir(None)
+        tools.prepare_output_dir(None)
 
         self.src_file = os.path.join(self._indir, 'orig.py')
-        self.outname = tools.GetOutputFilename('out.py')
+        self.outname = tools.get_output_filename('out.py')
         self.args = ['-D', '-s', self._indir, '-o', self.outname]
         self.readme = os.path.join(self._indir, 'readme.rst')
         self.macro_dir = os.path.join(self._indir, 'include/tools_share')
@@ -78,25 +78,25 @@ toc_entry_t toc_entries[] = {
 
     def setup_readme(self):
         """Set up the readme.txt file"""
-        tools.WriteFile(self.readme, 'Trusted Firmware-A\n==================',
+        tools.write_file(self.readme, 'Trusted Firmware-A\n==================',
                         binary=False)
 
     def setup_macro(self, data=macro_contents):
         """Set up the tbbr_config.c file"""
         os.makedirs(self.macro_dir)
-        tools.WriteFile(self.macro_fname, data, binary=False)
+        tools.write_file(self.macro_fname, data, binary=False)
 
     def setup_name(self, data=name_contents):
         """Set up the firmware_image_package.h file"""
         os.makedirs(self.name_dir)
-        tools.WriteFile(self.name_fname, data, binary=False)
+        tools.write_file(self.name_fname, data, binary=False)
 
     def tearDown(self):
         """Remove the temporary input directory and its contents"""
         if self._indir:
             shutil.rmtree(self._indir)
         self._indir = None
-        tools.FinaliseOutputDir()
+        tools.finalise_output_dir()
 
     def test_no_readme(self):
         """Test handling of a missing readme.rst"""
@@ -106,7 +106,7 @@ toc_entry_t toc_entries[] = {
 
     def test_invalid_readme(self):
         """Test that an invalid readme.rst is detected"""
-        tools.WriteFile(self.readme, 'blah', binary=False)
+        tools.write_file(self.readme, 'blah', binary=False)
         with self.assertRaises(Exception) as err:
             fip_util.main(self.args, self.src_file)
         self.assertIn('does not start with', str(err.exception))
@@ -228,7 +228,7 @@ toc_entry_t toc_entries[] = {
         self.setup_name()
 
         # Check generating the file when changes are needed
-        tools.WriteFile(self.src_file, '''
+        tools.write_file(self.src_file, '''
 
 # This is taken from tbbr_config.c in ARM Trusted Firmware
 FIP_TYPE_LIST = [
@@ -244,7 +244,7 @@ blah de blah
         self.assertIn('Needs update', stdout.getvalue())
 
         # Check generating the file when no changes are needed
-        tools.WriteFile(self.src_file, '''
+        tools.write_file(self.src_file, '''
 # This is taken from tbbr_config.c in ARM Trusted Firmware
 FIP_TYPE_LIST = [
     # ToC Entry UUIDs
@@ -268,7 +268,7 @@ blah blah''', binary=False)
 
         args = self.args.copy()
         args.remove('-D')
-        tools.WriteFile(self.src_file, '', binary=False)
+        tools.write_file(self.src_file, '', binary=False)
         with test_util.capture_sys_output():
             fip_util.main(args, self.src_file)
 
@@ -282,8 +282,8 @@ blah blah''', binary=False)
         fip.add_entry('tb-fw', tb_fw, 0)
         fip.add_entry(bytes(range(16)), tb_fw, 0)
         data = fip.get_data()
-        fname = tools.GetOutputFilename('data.fip')
-        tools.WriteFile(fname, data)
+        fname = tools.get_output_filename('data.fip')
+        tools.write_file(fname, data)
         result = FIPTOOL.info(fname)
         self.assertEqual(
             '''Firmware Updater NS_BL2U: offset=0xB0, size=0x7, cmdline="--fwu"
@@ -303,19 +303,19 @@ Trusted Boot Firmware BL2: offset=0xC0, size=0xE, cmdline="--tb-fw"
             FipReader: reader for the image
         """
         fwu = os.path.join(self._indir, 'fwu')
-        tools.WriteFile(fwu, self.fwu_data)
+        tools.write_file(fwu, self.fwu_data)
 
         tb_fw = os.path.join(self._indir, 'tb_fw')
-        tools.WriteFile(tb_fw, self.tb_fw_data)
+        tools.write_file(tb_fw, self.tb_fw_data)
 
         other_fw = os.path.join(self._indir, 'other_fw')
-        tools.WriteFile(other_fw, self.other_fw_data)
+        tools.write_file(other_fw, self.other_fw_data)
 
-        fname = tools.GetOutputFilename('data.fip')
+        fname = tools.get_output_filename('data.fip')
         uuid = 'e3b78d9e-4a64-11ec-b45c-fba2b9b49788'
         FIPTOOL.create_new(fname, 8, 0x123, fwu, tb_fw, uuid, other_fw)
 
-        return fip_util.FipReader(tools.ReadFile(fname))
+        return fip_util.FipReader(tools.read_file(fname))
 
     @unittest.skipIf(not HAVE_FIPTOOL, 'No fiptool available')
     def test_fiptool_create(self):
diff --git a/tools/binman/fmap_util.py b/tools/binman/fmap_util.py
index 8277619768..1ce63d1a83 100644
--- a/tools/binman/fmap_util.py
+++ b/tools/binman/fmap_util.py
@@ -70,7 +70,7 @@ def ConvertName(field_names, fields):
             value: value of that field (string for the ones we support)
     """
     name_index = field_names.index('name')
-    fields[name_index] = tools.ToBytes(NameToFmap(fields[name_index]))
+    fields[name_index] = tools.to_bytes(NameToFmap(fields[name_index]))
 
 def DecodeFmap(data):
     """Decode a flashmap into a header and list of areas
diff --git a/tools/binman/ftest.py b/tools/binman/ftest.py
index 5400f76c67..21adf433fe 100644
--- a/tools/binman/ftest.py
+++ b/tools/binman/ftest.py
@@ -174,7 +174,7 @@ class TestFunctional(unittest.TestCase):
 
         # ELF file with a '_dt_ucode_base_size' symbol
         TestFunctional._MakeInputFile('u-boot',
-            tools.ReadFile(cls.ElfTestFile('u_boot_ucode_ptr')))
+            tools.read_file(cls.ElfTestFile('u_boot_ucode_ptr')))
 
         # Intel flash descriptor file
         cls._SetupDescriptor()
@@ -236,7 +236,7 @@ class TestFunctional(unittest.TestCase):
         if self.preserve_outdirs:
             print('Preserving output dir: %s' % tools.outdir)
         else:
-            tools._FinaliseForTest()
+            tools._finalise_for_test()
 
     def setUp(self):
         # Enable this to turn on debugging output
@@ -262,10 +262,10 @@ class TestFunctional(unittest.TestCase):
                 Temporary directory to use
                 New image filename
         """
-        image_fname = tools.GetOutputFilename('image.bin')
+        image_fname = tools.get_output_filename('image.bin')
         tmpdir = tempfile.mkdtemp(prefix='binman.')
         updated_fname = os.path.join(tmpdir, 'image-updated.bin')
-        tools.WriteFile(updated_fname, tools.ReadFile(image_fname))
+        tools.write_file(updated_fname, tools.read_file(image_fname))
         self._CleanupOutputDir()
         return tmpdir, updated_fname
 
@@ -492,14 +492,14 @@ class TestFunctional(unittest.TestCase):
                     use_expanded=use_expanded, extra_indirs=extra_indirs,
                     threads=threads)
             self.assertEqual(0, retcode)
-            out_dtb_fname = tools.GetOutputFilename('u-boot.dtb.out')
+            out_dtb_fname = tools.get_output_filename('u-boot.dtb.out')
 
             # Find the (only) image, read it and return its contents
             image = control.images['image']
-            image_fname = tools.GetOutputFilename('image.bin')
+            image_fname = tools.get_output_filename('image.bin')
             self.assertTrue(os.path.exists(image_fname))
             if map:
-                map_fname = tools.GetOutputFilename('image.map')
+                map_fname = tools.get_output_filename('image.map')
                 with open(map_fname) as fd:
                     map_data = fd.read()
             else:
@@ -578,7 +578,7 @@ class TestFunctional(unittest.TestCase):
             Filename of ELF file to use as SPL
         """
         TestFunctional._MakeInputFile('spl/u-boot-spl',
-            tools.ReadFile(cls.ElfTestFile(src_fname)))
+            tools.read_file(cls.ElfTestFile(src_fname)))
 
     @classmethod
     def _SetupTplElf(cls, src_fname='bss_data'):
@@ -588,7 +588,7 @@ class TestFunctional(unittest.TestCase):
             Filename of ELF file to use as TPL
         """
         TestFunctional._MakeInputFile('tpl/u-boot-tpl',
-            tools.ReadFile(cls.ElfTestFile(src_fname)))
+            tools.read_file(cls.ElfTestFile(src_fname)))
 
     @classmethod
     def _SetupDescriptor(cls):
@@ -756,7 +756,7 @@ class TestFunctional(unittest.TestCase):
 
         image = control.images['image1']
         self.assertEqual(len(U_BOOT_DATA), image.size)
-        fname = tools.GetOutputFilename('image1.bin')
+        fname = tools.get_output_filename('image1.bin')
         self.assertTrue(os.path.exists(fname))
         with open(fname, 'rb') as fd:
             data = fd.read()
@@ -764,13 +764,13 @@ class TestFunctional(unittest.TestCase):
 
         image = control.images['image2']
         self.assertEqual(3 + len(U_BOOT_DATA) + 5, image.size)
-        fname = tools.GetOutputFilename('image2.bin')
+        fname = tools.get_output_filename('image2.bin')
         self.assertTrue(os.path.exists(fname))
         with open(fname, 'rb') as fd:
             data = fd.read()
             self.assertEqual(U_BOOT_DATA, data[3:7])
-            self.assertEqual(tools.GetBytes(0, 3), data[:3])
-            self.assertEqual(tools.GetBytes(0, 5), data[7:])
+            self.assertEqual(tools.get_bytes(0, 3), data[:3])
+            self.assertEqual(tools.get_bytes(0, 5), data[7:])
 
     def testBadAlign(self):
         """Test that an invalid alignment value is detected"""
@@ -838,8 +838,8 @@ class TestFunctional(unittest.TestCase):
         self.assertEqual(3, entry.pad_before)
         self.assertEqual(3 + 5 + len(U_BOOT_DATA), entry.size)
         self.assertEqual(U_BOOT_DATA, entry.data)
-        self.assertEqual(tools.GetBytes(0, 3) + U_BOOT_DATA +
-                         tools.GetBytes(0, 5), data[:entry.size])
+        self.assertEqual(tools.get_bytes(0, 3) + U_BOOT_DATA +
+                         tools.get_bytes(0, 5), data[:entry.size])
         pos = entry.size
 
         # Second u-boot has an aligned size, but it has no effect
@@ -857,7 +857,7 @@ class TestFunctional(unittest.TestCase):
         self.assertEqual(pos, entry.offset)
         self.assertEqual(32, entry.size)
         self.assertEqual(U_BOOT_DATA, entry.data)
-        self.assertEqual(U_BOOT_DATA + tools.GetBytes(0, 32 - len(U_BOOT_DATA)),
+        self.assertEqual(U_BOOT_DATA + tools.get_bytes(0, 32 - len(U_BOOT_DATA)),
                          data[pos:pos + entry.size])
         pos += entry.size
 
@@ -867,7 +867,7 @@ class TestFunctional(unittest.TestCase):
         self.assertEqual(48, entry.offset)
         self.assertEqual(16, entry.size)
         self.assertEqual(U_BOOT_DATA, entry.data[:len(U_BOOT_DATA)])
-        self.assertEqual(U_BOOT_DATA + tools.GetBytes(0, 16 - len(U_BOOT_DATA)),
+        self.assertEqual(U_BOOT_DATA + tools.get_bytes(0, 16 - len(U_BOOT_DATA)),
                          data[pos:pos + entry.size])
         pos += entry.size
 
@@ -877,7 +877,7 @@ class TestFunctional(unittest.TestCase):
         self.assertEqual(64, entry.offset)
         self.assertEqual(64, entry.size)
         self.assertEqual(U_BOOT_DATA, entry.data[:len(U_BOOT_DATA)])
-        self.assertEqual(U_BOOT_DATA + tools.GetBytes(0, 64 - len(U_BOOT_DATA)),
+        self.assertEqual(U_BOOT_DATA + tools.get_bytes(0, 64 - len(U_BOOT_DATA)),
                          data[pos:pos + entry.size])
 
         self.CheckNoGaps(entries)
@@ -997,7 +997,7 @@ class TestFunctional(unittest.TestCase):
         """Test that the image pad byte can be specified"""
         self._SetupSplElf()
         data = self._DoReadFile('021_image_pad.dts')
-        self.assertEqual(U_BOOT_SPL_DATA + tools.GetBytes(0xff, 1) +
+        self.assertEqual(U_BOOT_SPL_DATA + tools.get_bytes(0xff, 1) +
                          U_BOOT_DATA, data)
 
     def testImageName(self):
@@ -1005,11 +1005,11 @@ class TestFunctional(unittest.TestCase):
         retcode = self._DoTestFile('022_image_name.dts')
         self.assertEqual(0, retcode)
         image = control.images['image1']
-        fname = tools.GetOutputFilename('test-name')
+        fname = tools.get_output_filename('test-name')
         self.assertTrue(os.path.exists(fname))
 
         image = control.images['image2']
-        fname = tools.GetOutputFilename('test-name.xx')
+        fname = tools.get_output_filename('test-name.xx')
         self.assertTrue(os.path.exists(fname))
 
     def testBlobFilename(self):
@@ -1021,8 +1021,8 @@ class TestFunctional(unittest.TestCase):
         """Test that entries can be sorted"""
         self._SetupSplElf()
         data = self._DoReadFile('024_sorted.dts')
-        self.assertEqual(tools.GetBytes(0, 1) + U_BOOT_SPL_DATA +
-                         tools.GetBytes(0, 2) + U_BOOT_DATA, data)
+        self.assertEqual(tools.get_bytes(0, 1) + U_BOOT_SPL_DATA +
+                         tools.get_bytes(0, 2) + U_BOOT_DATA, data)
 
     def testPackZeroOffset(self):
         """Test that an entry at offset 0 is not given a new offset"""
@@ -1065,8 +1065,8 @@ class TestFunctional(unittest.TestCase):
         """Test that a basic x86 ROM can be created"""
         self._SetupSplElf()
         data = self._DoReadFile('029_x86_rom.dts')
-        self.assertEqual(U_BOOT_DATA + tools.GetBytes(0, 3) + U_BOOT_SPL_DATA +
-                         tools.GetBytes(0, 2), data)
+        self.assertEqual(U_BOOT_DATA + tools.get_bytes(0, 3) + U_BOOT_SPL_DATA +
+                         tools.get_bytes(0, 2), data)
 
     def testPackX86RomMeNoDesc(self):
         """Test that an invalid Intel descriptor entry is detected"""
@@ -1090,7 +1090,7 @@ class TestFunctional(unittest.TestCase):
     def testPackX86RomMe(self):
         """Test that an x86 ROM with an ME region can be created"""
         data = self._DoReadFile('031_x86_rom_me.dts')
-        expected_desc = tools.ReadFile(self.TestFile('descriptor.bin'))
+        expected_desc = tools.read_file(self.TestFile('descriptor.bin'))
         if data[:0x1000] != expected_desc:
             self.fail('Expected descriptor binary at start of image')
         self.assertEqual(ME_DATA, data[0x1000:0x1000 + len(ME_DATA)])
@@ -1139,7 +1139,7 @@ class TestFunctional(unittest.TestCase):
             fdt_len = self.GetFdtLen(dtb_with_ucode)
             ucode_content = dtb_with_ucode[fdt_len:]
             ucode_pos = len(nodtb_data) + fdt_len
-        fname = tools.GetOutputFilename('test.dtb')
+        fname = tools.get_output_filename('test.dtb')
         with open(fname, 'wb') as fd:
             fd.write(dtb_with_ucode)
         dtb = fdt.FdtScan(fname)
@@ -1244,7 +1244,7 @@ class TestFunctional(unittest.TestCase):
         # ELF file without a '_dt_ucode_base_size' symbol
         try:
             TestFunctional._MakeInputFile('u-boot',
-                tools.ReadFile(self.ElfTestFile('u_boot_no_ucode_ptr')))
+                tools.read_file(self.ElfTestFile('u_boot_no_ucode_ptr')))
 
             with self.assertRaises(ValueError) as e:
                 self._RunPackUbootSingleMicrocode()
@@ -1254,7 +1254,7 @@ class TestFunctional(unittest.TestCase):
         finally:
             # Put the original file back
             TestFunctional._MakeInputFile('u-boot',
-                tools.ReadFile(self.ElfTestFile('u_boot_ucode_ptr')))
+                tools.read_file(self.ElfTestFile('u_boot_ucode_ptr')))
 
     def testMicrocodeNotInImage(self):
         """Test that microcode must be placed within the image"""
@@ -1267,7 +1267,7 @@ class TestFunctional(unittest.TestCase):
     def testWithoutMicrocode(self):
         """Test that we can cope with an image without microcode (e.g. qemu)"""
         TestFunctional._MakeInputFile('u-boot',
-            tools.ReadFile(self.ElfTestFile('u_boot_no_ucode_ptr')))
+            tools.read_file(self.ElfTestFile('u_boot_no_ucode_ptr')))
         data, dtb, _, _ = self._DoReadFileDtb('044_x86_optional_ucode.dts', True)
 
         # Now check the device tree has no microcode
@@ -1279,7 +1279,7 @@ class TestFunctional(unittest.TestCase):
 
         used_len = len(U_BOOT_NODTB_DATA) + fdt_len
         third = data[used_len:]
-        self.assertEqual(tools.GetBytes(0, 0x200 - used_len), third)
+        self.assertEqual(tools.get_bytes(0, 0x200 - used_len), third)
 
     def testUnknownPosSize(self):
         """Test that microcode must be placed within the image"""
@@ -1308,7 +1308,7 @@ class TestFunctional(unittest.TestCase):
         # ELF file with a '__bss_size' symbol
         self._SetupSplElf()
         data = self._DoReadFile('047_spl_bss_pad.dts')
-        self.assertEqual(U_BOOT_SPL_DATA + tools.GetBytes(0, 10) + U_BOOT_DATA,
+        self.assertEqual(U_BOOT_SPL_DATA + tools.get_bytes(0, 10) + U_BOOT_DATA,
                          data)
 
     def testSplBssPadMissing(self):
@@ -1404,7 +1404,7 @@ class TestFunctional(unittest.TestCase):
                                  u_boot_offset + len(U_BOOT_DATA),
                                  0x10 + u_boot_offset, 0x04)
         expected = (sym_values + base_data[20:] +
-                    tools.GetBytes(0xff, 1) + U_BOOT_DATA + sym_values +
+                    tools.get_bytes(0xff, 1) + U_BOOT_DATA + sym_values +
                     base_data[20:])
         self.assertEqual(expected, data)
 
@@ -1426,9 +1426,9 @@ class TestFunctional(unittest.TestCase):
     def testSections(self):
         """Basic test of sections"""
         data = self._DoReadFile('055_sections.dts')
-        expected = (U_BOOT_DATA + tools.GetBytes(ord('!'), 12) +
-                    U_BOOT_DATA + tools.GetBytes(ord('a'), 12) +
-                    U_BOOT_DATA + tools.GetBytes(ord('&'), 4))
+        expected = (U_BOOT_DATA + tools.get_bytes(ord('!'), 12) +
+                    U_BOOT_DATA + tools.get_bytes(ord('a'), 12) +
+                    U_BOOT_DATA + tools.get_bytes(ord('&'), 4))
         self.assertEqual(expected, data)
 
     def testMap(self):
@@ -1593,9 +1593,9 @@ class TestFunctional(unittest.TestCase):
         }
         data, _, _, _ = self._DoReadFileDtb('066_text.dts',
                                             entry_args=entry_args)
-        expected = (tools.ToBytes(TEXT_DATA) +
-                    tools.GetBytes(0, 8 - len(TEXT_DATA)) +
-                    tools.ToBytes(TEXT_DATA2) + tools.ToBytes(TEXT_DATA3) +
+        expected = (tools.to_bytes(TEXT_DATA) +
+                    tools.get_bytes(0, 8 - len(TEXT_DATA)) +
+                    tools.to_bytes(TEXT_DATA2) + tools.to_bytes(TEXT_DATA3) +
                     b'some text' + b'more text')
         self.assertEqual(expected, data)
 
@@ -1617,8 +1617,8 @@ class TestFunctional(unittest.TestCase):
         """Basic test of generation of a flashrom fmap"""
         data = self._DoReadFile('067_fmap.dts')
         fhdr, fentries = fmap_util.DecodeFmap(data[32:])
-        expected = (U_BOOT_DATA + tools.GetBytes(ord('!'), 12) +
-                    U_BOOT_DATA + tools.GetBytes(ord('a'), 12))
+        expected = (U_BOOT_DATA + tools.get_bytes(ord('!'), 12) +
+                    U_BOOT_DATA + tools.get_bytes(ord('a'), 12))
         self.assertEqual(expected, data[:32])
         self.assertEqual(b'__FMAP__', fhdr.signature)
         self.assertEqual(1, fhdr.ver_major)
@@ -1670,7 +1670,7 @@ class TestFunctional(unittest.TestCase):
     def testFill(self):
         """Test for an fill entry type"""
         data = self._DoReadFile('069_fill.dts')
-        expected = tools.GetBytes(0xff, 8) + tools.GetBytes(0, 8)
+        expected = tools.get_bytes(0xff, 8) + tools.get_bytes(0, 8)
         self.assertEqual(expected, data)
 
     def testFillNoSize(self):
@@ -1700,8 +1700,8 @@ class TestFunctional(unittest.TestCase):
         data, _, _, _ = self._DoReadFileDtb('071_gbb.dts', entry_args=entry_args)
 
         # Since futility
-        expected = (GBB_DATA + GBB_DATA + tools.GetBytes(0, 8) +
-                    tools.GetBytes(0, 0x2180 - 16))
+        expected = (GBB_DATA + GBB_DATA + tools.get_bytes(0, 8) +
+                    tools.get_bytes(0, 0x2180 - 16))
         self.assertEqual(expected, data)
 
     def testGbbTooSmall(self):
@@ -1751,7 +1751,7 @@ class TestFunctional(unittest.TestCase):
                 if self._hash_data:
                     infile = pipe_list[0][11]
                     m = hashlib.sha256()
-                    data = tools.ReadFile(infile)
+                    data = tools.read_file(infile)
                     m.update(data)
                     fd.write(m.digest())
                 else:
@@ -1845,7 +1845,7 @@ class TestFunctional(unittest.TestCase):
     def testFillZero(self):
         """Test for an fill entry type with a size of 0"""
         data = self._DoReadFile('080_fill_empty.dts')
-        self.assertEqual(tools.GetBytes(0, 16), data)
+        self.assertEqual(tools.get_bytes(0, 16), data)
 
     def testTextMissing(self):
         """Test for a text entry type where there is no text"""
@@ -1875,8 +1875,8 @@ class TestFunctional(unittest.TestCase):
             else:
                 self.assertNotIn(expected, stdout.getvalue())
 
-            self.assertFalse(os.path.exists(tools.GetOutputFilename('image1.bin')))
-            self.assertTrue(os.path.exists(tools.GetOutputFilename('image2.bin')))
+            self.assertFalse(os.path.exists(tools.get_output_filename('image1.bin')))
+            self.assertTrue(os.path.exists(tools.get_output_filename('image2.bin')))
             self._CleanupOutputDir()
 
     def testUpdateFdtAll(self):
@@ -1933,8 +1933,8 @@ class TestFunctional(unittest.TestCase):
                           'tpl/u-boot-tpl.dtb.out']:
                 dtb = fdt.Fdt.FromData(data[start:])
                 size = dtb._fdt_obj.totalsize()
-                pathname = tools.GetOutputFilename(os.path.split(fname)[1])
-                outdata = tools.ReadFile(pathname)
+                pathname = tools.get_output_filename(os.path.split(fname)[1])
+                outdata = tools.read_file(pathname)
                 name = os.path.split(fname)[0]
 
                 if name:
@@ -2027,10 +2027,10 @@ class TestFunctional(unittest.TestCase):
         """Test an expanding entry"""
         data, _, map_data, _ = self._DoReadFileDtb('088_expand_size.dts',
                                                    map=True)
-        expect = (tools.GetBytes(ord('a'), 8) + U_BOOT_DATA +
-                  MRC_DATA + tools.GetBytes(ord('b'), 1) + U_BOOT_DATA +
-                  tools.GetBytes(ord('c'), 8) + U_BOOT_DATA +
-                  tools.GetBytes(ord('d'), 8))
+        expect = (tools.get_bytes(ord('a'), 8) + U_BOOT_DATA +
+                  MRC_DATA + tools.get_bytes(ord('b'), 1) + U_BOOT_DATA +
+                  tools.get_bytes(ord('c'), 8) + U_BOOT_DATA +
+                  tools.get_bytes(ord('d'), 8))
         self.assertEqual(expect, data)
         self.assertEqual('''ImagePos    Offset      Size  Name
 00000000  00000000  00000028  main-section
@@ -2085,7 +2085,7 @@ class TestFunctional(unittest.TestCase):
         hash_node = dtb.GetNode('/binman/section/hash').props['value']
         m = hashlib.sha256()
         m.update(U_BOOT_DATA)
-        m.update(tools.GetBytes(ord('a'), 16))
+        m.update(tools.get_bytes(ord('a'), 16))
         self.assertEqual(m.digest(), b''.join(hash_node.value))
 
     def testPackUBootTplMicrocode(self):
@@ -2107,7 +2107,7 @@ class TestFunctional(unittest.TestCase):
         """Basic test of generation of a flashrom fmap"""
         data = self._DoReadFile('094_fmap_x86.dts')
         fhdr, fentries = fmap_util.DecodeFmap(data[32:])
-        expected = U_BOOT_DATA + MRC_DATA + tools.GetBytes(ord('a'), 32 - 7)
+        expected = U_BOOT_DATA + MRC_DATA + tools.get_bytes(ord('a'), 32 - 7)
         self.assertEqual(expected, data[:32])
         fhdr, fentries = fmap_util.DecodeFmap(data[32:])
 
@@ -2129,7 +2129,7 @@ class TestFunctional(unittest.TestCase):
     def testFmapX86Section(self):
         """Basic test of generation of a flashrom fmap"""
         data = self._DoReadFile('095_fmap_x86_section.dts')
-        expected = U_BOOT_DATA + MRC_DATA + tools.GetBytes(ord('b'), 32 - 7)
+        expected = U_BOOT_DATA + MRC_DATA + tools.get_bytes(ord('b'), 32 - 7)
         self.assertEqual(expected, data[:32])
         fhdr, fentries = fmap_util.DecodeFmap(data[36:])
 
@@ -2177,14 +2177,14 @@ class TestFunctional(unittest.TestCase):
         with test_util.capture_sys_output() as (stdout, stderr):
             with self.assertRaises(ValueError) as e:
                 self._DoTestFile('014_pack_overlap.dts', map=True)
-        map_fname = tools.GetOutputFilename('image.map')
+        map_fname = tools.get_output_filename('image.map')
         self.assertEqual("Wrote map file '%s' to show errors\n" % map_fname,
                          stdout.getvalue())
 
         # We should not get an inmage, but there should be a map file
-        self.assertFalse(os.path.exists(tools.GetOutputFilename('image.bin')))
+        self.assertFalse(os.path.exists(tools.get_output_filename('image.bin')))
         self.assertTrue(os.path.exists(map_fname))
-        map_data = tools.ReadFile(map_fname, binary=False)
+        map_data = tools.read_file(map_fname, binary=False)
         self.assertEqual('''ImagePos    Offset      Size  Name
 <none>    00000000  00000008  main-section
 <none>     00000000  00000004  u-boot
@@ -2210,12 +2210,12 @@ class TestFunctional(unittest.TestCase):
 0000002c    00000000  00000004  u-boot
 ''', map_data)
         self.assertEqual(data,
-                         tools.GetBytes(0x26, 4) + U_BOOT_DATA +
-                             tools.GetBytes(0x21, 12) +
-                         tools.GetBytes(0x26, 4) + U_BOOT_DATA +
-                             tools.GetBytes(0x61, 12) +
-                         tools.GetBytes(0x26, 4) + U_BOOT_DATA +
-                             tools.GetBytes(0x26, 8))
+                         tools.get_bytes(0x26, 4) + U_BOOT_DATA +
+                             tools.get_bytes(0x21, 12) +
+                         tools.get_bytes(0x26, 4) + U_BOOT_DATA +
+                             tools.get_bytes(0x61, 12) +
+                         tools.get_bytes(0x26, 4) + U_BOOT_DATA +
+                             tools.get_bytes(0x26, 8))
 
     def testCbfsRaw(self):
         """Test base handling of a Coreboot Filesystem (CBFS)
@@ -2332,17 +2332,17 @@ class TestFunctional(unittest.TestCase):
         Args:
             data: Conents of output file
         """
-        expected_desc = tools.ReadFile(self.TestFile('descriptor.bin'))
+        expected_desc = tools.read_file(self.TestFile('descriptor.bin'))
         if data[:0x1000] != expected_desc:
             self.fail('Expected descriptor binary at start of image')
 
         # We expect to find the TPL wil in subpart IBBP entry IBBL
-        image_fname = tools.GetOutputFilename('image.bin')
-        tpl_fname = tools.GetOutputFilename('tpl.out')
+        image_fname = tools.get_output_filename('image.bin')
+        tpl_fname = tools.get_output_filename('tpl.out')
         ifwitool = bintool.Bintool.create('ifwitool')
         ifwitool.extract(image_fname, 'IBBP', 'IBBL', tpl_fname)
 
-        tpl_data = tools.ReadFile(tpl_fname)
+        tpl_data = tools.read_file(tpl_fname)
         self.assertEqual(U_BOOT_TPL_DATA, tpl_data[:len(U_BOOT_TPL_DATA)])
 
     def testPackX86RomIfwi(self):
@@ -2403,7 +2403,7 @@ class TestFunctional(unittest.TestCase):
         fdtmap_data = data[len(U_BOOT_DATA):]
         magic = fdtmap_data[:8]
         self.assertEqual(b'_FDTMAP_', magic)
-        self.assertEqual(tools.GetBytes(0, 8), fdtmap_data[8:16])
+        self.assertEqual(tools.get_bytes(0, 8), fdtmap_data[8:16])
 
         fdt_data = fdtmap_data[16:]
         dtb = fdt.Fdt.FromData(fdt_data)
@@ -2668,7 +2668,7 @@ class TestFunctional(unittest.TestCase):
         """Test reading an image and accessing its FDT map"""
         self._CheckLz4()
         data = self.data = self._DoReadFileRealDtb('128_decode_image.dts')
-        image_fname = tools.GetOutputFilename('image.bin')
+        image_fname = tools.get_output_filename('image.bin')
         orig_image = control.images['image']
         image = Image.FromFile(image_fname)
         self.assertEqual(orig_image.GetEntries().keys(),
@@ -2684,7 +2684,7 @@ class TestFunctional(unittest.TestCase):
         """Test accessing an image's FDT map without an image header"""
         self._CheckLz4()
         data = self._DoReadFileRealDtb('129_decode_image_nohdr.dts')
-        image_fname = tools.GetOutputFilename('image.bin')
+        image_fname = tools.get_output_filename('image.bin')
         image = Image.FromFile(image_fname)
         self.assertTrue(isinstance(image, Image))
         self.assertEqual('image', image.image_name[-5:])
@@ -2692,7 +2692,7 @@ class TestFunctional(unittest.TestCase):
     def testReadImageFail(self):
         """Test failing to read an image image's FDT map"""
         self._DoReadFile('005_simple.dts')
-        image_fname = tools.GetOutputFilename('image.bin')
+        image_fname = tools.get_output_filename('image.bin')
         with self.assertRaises(ValueError) as e:
             image = Image.FromFile(image_fname)
         self.assertIn("Cannot find FDT map in image", str(e.exception))
@@ -2752,7 +2752,7 @@ class TestFunctional(unittest.TestCase):
         """
         self._CheckLz4()
         self._DoReadFileRealDtb('130_list_fdtmap.dts')
-        image_fname = tools.GetOutputFilename('image.bin')
+        image_fname = tools.get_output_filename('image.bin')
         image = Image.FromFile(image_fname)
         lines = image.GetListEntries(paths)[1]
         files = [line[0].strip() for line in lines[1:]]
@@ -2798,7 +2798,7 @@ class TestFunctional(unittest.TestCase):
         """
         self._CheckLz4()
         self._DoReadFileRealDtb('130_list_fdtmap.dts')
-        image_fname = tools.GetOutputFilename('image.bin')
+        image_fname = tools.get_output_filename('image.bin')
         return control.ReadEntry(image_fname, entry_name, decomp)
 
     def testExtractSimple(self):
@@ -2858,7 +2858,7 @@ class TestFunctional(unittest.TestCase):
     def testExtractBadFile(self):
         """Test extracting an invalid file"""
         fname = os.path.join(self._indir, 'badfile')
-        tools.WriteFile(fname, b'')
+        tools.write_file(fname, b'')
         with self.assertRaises(ValueError) as e:
             control.ReadEntry(fname, 'name')
 
@@ -2874,17 +2874,17 @@ class TestFunctional(unittest.TestCase):
                                '-f', fname)
         finally:
             shutil.rmtree(tmpdir)
-        data = tools.ReadFile(fname)
+        data = tools.read_file(fname)
         self.assertEqual(U_BOOT_DATA, data)
 
     def testExtractOneEntry(self):
         """Test extracting a single entry fron an image """
         self._CheckLz4()
         self._DoReadFileRealDtb('130_list_fdtmap.dts')
-        image_fname = tools.GetOutputFilename('image.bin')
+        image_fname = tools.get_output_filename('image.bin')
         fname = os.path.join(self._indir, 'output.extact')
         control.ExtractEntries(image_fname, fname, None, ['u-boot'])
-        data = tools.ReadFile(fname)
+        data = tools.read_file(fname)
         self.assertEqual(U_BOOT_DATA, data)
 
     def _CheckExtractOutput(self, decomp):
@@ -2906,7 +2906,7 @@ class TestFunctional(unittest.TestCase):
                 expect_size: Size of data to expect in file, or None to skip
             """
             path = os.path.join(outdir, entry_path)
-            data = tools.ReadFile(path)
+            data = tools.read_file(path)
             os.remove(path)
             if expect_data:
                 self.assertEqual(expect_data, data)
@@ -2926,7 +2926,7 @@ class TestFunctional(unittest.TestCase):
             os.rmdir(path)
 
         self._DoReadFileRealDtb('130_list_fdtmap.dts')
-        image_fname = tools.GetOutputFilename('image.bin')
+        image_fname = tools.get_output_filename('image.bin')
         outdir = os.path.join(self._indir, 'extract')
         einfos = control.ExtractEntries(image_fname, None, outdir, [], decomp)
 
@@ -2962,7 +2962,7 @@ class TestFunctional(unittest.TestCase):
         _CheckPresent('section/root', section.data)
         cbfs = section_entries['cbfs']
         _CheckPresent('section/cbfs/root', cbfs.data)
-        data = tools.ReadFile(image_fname)
+        data = tools.read_file(image_fname)
         _CheckPresent('root', data)
 
         # There should be no files left. Remove all the directories to check.
@@ -2987,7 +2987,7 @@ class TestFunctional(unittest.TestCase):
         """Test extracting some entries"""
         self._CheckLz4()
         self._DoReadFileRealDtb('130_list_fdtmap.dts')
-        image_fname = tools.GetOutputFilename('image.bin')
+        image_fname = tools.get_output_filename('image.bin')
         outdir = os.path.join(self._indir, 'extract')
         einfos = control.ExtractEntries(image_fname, None, outdir,
                                         ['*cb*', '*head*'])
@@ -3002,7 +3002,7 @@ class TestFunctional(unittest.TestCase):
         """Test extracting some entries"""
         self._CheckLz4()
         self._DoReadFileRealDtb('130_list_fdtmap.dts')
-        image_fname = tools.GetOutputFilename('image.bin')
+        image_fname = tools.get_output_filename('image.bin')
         with self.assertRaises(ValueError) as e:
             control.ExtractEntries(image_fname, 'fname', None, [])
         self.assertIn('Must specify an entry path to write with -f',
@@ -3012,7 +3012,7 @@ class TestFunctional(unittest.TestCase):
         """Test extracting some entries"""
         self._CheckLz4()
         self._DoReadFileRealDtb('130_list_fdtmap.dts')
-        image_fname = tools.GetOutputFilename('image.bin')
+        image_fname = tools.get_output_filename('image.bin')
         with self.assertRaises(ValueError) as e:
             control.ExtractEntries(image_fname, 'fname', None, ['a', 'b'])
         self.assertIn('Must specify exactly one entry path to write with -f',
@@ -3113,9 +3113,9 @@ class TestFunctional(unittest.TestCase):
         orig_dtb_data = entries['u-boot-dtb'].data
         orig_fdtmap_data = entries['fdtmap'].data
 
-        image_fname = tools.GetOutputFilename('image.bin')
-        updated_fname = tools.GetOutputFilename('image-updated.bin')
-        tools.WriteFile(updated_fname, tools.ReadFile(image_fname))
+        image_fname = tools.get_output_filename('image.bin')
+        updated_fname = tools.get_output_filename('image-updated.bin')
+        tools.write_file(updated_fname, tools.read_file(image_fname))
         image = control.WriteEntry(updated_fname, entry_name, data, decomp,
                                    allow_resize)
         data = control.ReadEntry(updated_fname, entry_name, decomp)
@@ -3170,8 +3170,8 @@ class TestFunctional(unittest.TestCase):
         data = self._DoReadFileDtb('133_replace_multi.dts', use_real_dtb=True,
                                    update_dtb=True)[0]
         expected = b'x' * len(U_BOOT_DATA)
-        updated_fname = tools.GetOutputFilename('image-updated.bin')
-        tools.WriteFile(updated_fname, data)
+        updated_fname = tools.get_output_filename('image-updated.bin')
+        tools.write_file(updated_fname, data)
         entry_name = 'u-boot'
         control.WriteEntry(updated_fname, entry_name, expected,
                            allow_resize=False)
@@ -3182,9 +3182,9 @@ class TestFunctional(unittest.TestCase):
         self.assertEqual('/binman/image', state.fdt_path_prefix)
 
         # Now check we can write the first image
-        image_fname = tools.GetOutputFilename('first-image.bin')
-        updated_fname = tools.GetOutputFilename('first-updated.bin')
-        tools.WriteFile(updated_fname, tools.ReadFile(image_fname))
+        image_fname = tools.get_output_filename('first-image.bin')
+        updated_fname = tools.get_output_filename('first-updated.bin')
+        tools.write_file(updated_fname, tools.read_file(image_fname))
         entry_name = 'u-boot'
         control.WriteEntry(updated_fname, entry_name, expected,
                            allow_resize=False)
@@ -3348,8 +3348,8 @@ class TestFunctional(unittest.TestCase):
         self._CheckLz4()
         expected = b'x' * len(U_BOOT_DATA)
         data = self._DoReadFileRealDtb('142_replace_cbfs.dts')
-        updated_fname = tools.GetOutputFilename('image-updated.bin')
-        tools.WriteFile(updated_fname, data)
+        updated_fname = tools.get_output_filename('image-updated.bin')
+        tools.write_file(updated_fname, data)
         entry_name = 'section/cbfs/u-boot'
         control.WriteEntry(updated_fname, entry_name, expected,
                            allow_resize=True)
@@ -3361,8 +3361,8 @@ class TestFunctional(unittest.TestCase):
         self._CheckLz4()
         expected = U_BOOT_DATA + b'x'
         data = self._DoReadFileRealDtb('142_replace_cbfs.dts')
-        updated_fname = tools.GetOutputFilename('image-updated.bin')
-        tools.WriteFile(updated_fname, data)
+        updated_fname = tools.get_output_filename('image-updated.bin')
+        tools.write_file(updated_fname, data)
         entry_name = 'section/cbfs/u-boot'
         control.WriteEntry(updated_fname, entry_name, expected,
                            allow_resize=True)
@@ -3383,23 +3383,23 @@ class TestFunctional(unittest.TestCase):
         """
         data = self._DoReadFileRealDtb('143_replace_all.dts')
 
-        updated_fname = tools.GetOutputFilename('image-updated.bin')
-        tools.WriteFile(updated_fname, data)
+        updated_fname = tools.get_output_filename('image-updated.bin')
+        tools.write_file(updated_fname, data)
 
         outdir = os.path.join(self._indir, 'extract')
         einfos = control.ExtractEntries(updated_fname, None, outdir, [])
 
         expected1 = b'x' + U_BOOT_DATA + b'y'
         u_boot_fname1 = os.path.join(outdir, 'u-boot')
-        tools.WriteFile(u_boot_fname1, expected1)
+        tools.write_file(u_boot_fname1, expected1)
 
         expected2 = b'a' + U_BOOT_DATA + b'b'
         u_boot_fname2 = os.path.join(outdir, 'u-boot2')
-        tools.WriteFile(u_boot_fname2, expected2)
+        tools.write_file(u_boot_fname2, expected2)
 
         expected_text = b'not the same text'
         text_fname = os.path.join(outdir, 'text')
-        tools.WriteFile(text_fname, expected_text)
+        tools.write_file(text_fname, expected_text)
 
         dtb_fname = os.path.join(outdir, 'u-boot-dtb')
         dtb = fdt.FdtScan(dtb_fname)
@@ -3475,10 +3475,10 @@ class TestFunctional(unittest.TestCase):
 
             fname = os.path.join(tmpdir, 'update-u-boot.bin')
             expected = b'x' * len(U_BOOT_DATA)
-            tools.WriteFile(fname, expected)
+            tools.write_file(fname, expected)
 
             self._DoBinman('replace', '-i', updated_fname, 'u-boot', '-f', fname)
-            data = tools.ReadFile(updated_fname)
+            data = tools.read_file(updated_fname)
             self.assertEqual(expected, data[:len(expected)])
             map_fname = os.path.join(tmpdir, 'image-updated.map')
             self.assertFalse(os.path.exists(map_fname))
@@ -3493,7 +3493,7 @@ class TestFunctional(unittest.TestCase):
         self._DoBinman('replace', '-i', updated_fname, '-I', outdir,
                        'u-boot2', 'text')
 
-        tools.PrepareOutputDir(None)
+        tools.prepare_output_dir(None)
         image = Image.FromFile(updated_fname)
         image.LoadData()
         entries = image.GetEntries()
@@ -3531,7 +3531,7 @@ class TestFunctional(unittest.TestCase):
 
             fname = os.path.join(self._indir, 'update-u-boot.bin')
             expected = b'x' * len(U_BOOT_DATA)
-            tools.WriteFile(fname, expected)
+            tools.write_file(fname, expected)
 
             self._DoBinman('replace', '-i', updated_fname, 'u-boot',
                            '-f', fname, '-m')
@@ -3543,7 +3543,7 @@ class TestFunctional(unittest.TestCase):
     def testReplaceNoEntryPaths(self):
         """Test replacing an entry without an entry path"""
         self._DoReadFileRealDtb('143_replace_all.dts')
-        image_fname = tools.GetOutputFilename('image.bin')
+        image_fname = tools.get_output_filename('image.bin')
         with self.assertRaises(ValueError) as e:
             control.ReplaceEntries(image_fname, 'fname', None, [])
         self.assertIn('Must specify an entry path to read with -f',
@@ -3552,7 +3552,7 @@ class TestFunctional(unittest.TestCase):
     def testReplaceTooManyEntryPaths(self):
         """Test extracting some entries"""
         self._DoReadFileRealDtb('143_replace_all.dts')
-        image_fname = tools.GetOutputFilename('image.bin')
+        image_fname = tools.get_output_filename('image.bin')
         with self.assertRaises(ValueError) as e:
             control.ReplaceEntries(image_fname, 'fname', None, ['a', 'b'])
         self.assertIn('Must specify exactly one entry path to write with -f',
@@ -3597,15 +3597,15 @@ class TestFunctional(unittest.TestCase):
         data = self._DoReadFile(dts)
         sym_values = struct.pack('<LQLL', *expected_vals)
         upto1 = 4 + len(U_BOOT_SPL_DATA)
-        expected1 = tools.GetBytes(0xff, 4) + sym_values + U_BOOT_SPL_DATA[20:]
+        expected1 = tools.get_bytes(0xff, 4) + sym_values + U_BOOT_SPL_DATA[20:]
         self.assertEqual(expected1, data[:upto1])
 
         upto2 = upto1 + 1 + len(U_BOOT_SPL_DATA)
-        expected2 = tools.GetBytes(0xff, 1) + sym_values + U_BOOT_SPL_DATA[20:]
+        expected2 = tools.get_bytes(0xff, 1) + sym_values + U_BOOT_SPL_DATA[20:]
         self.assertEqual(expected2, data[upto1:upto2])
 
         upto3 = 0x34 + len(U_BOOT_DATA)
-        expected3 = tools.GetBytes(0xff, 1) + U_BOOT_DATA
+        expected3 = tools.get_bytes(0xff, 1) + U_BOOT_DATA
         self.assertEqual(expected3, data[upto2:upto3])
 
         expected4 = sym_values + U_BOOT_TPL_DATA[20:]
@@ -3727,8 +3727,8 @@ class TestFunctional(unittest.TestCase):
         self.assertIn('data', fnode.props)
 
         fname = os.path.join(self._indir, 'fit_data.fit')
-        tools.WriteFile(fname, fit_data)
-        out = tools.Run('dumpimage', '-l', fname)
+        tools.write_file(fname, fit_data)
+        out = tools.run('dumpimage', '-l', fname)
 
         # Check a few features to make sure the plumbing works. We don't need
         # to test the operation of mkimage or dumpimage here. First convert the
@@ -3763,7 +3763,7 @@ class TestFunctional(unittest.TestCase):
         # Size of the external-data region as set up by mkimage
         external_data_size = len(U_BOOT_DATA) + 2
         expected_size = (len(U_BOOT_DATA) + 0x400 +
-                         tools.Align(external_data_size, 4) +
+                         tools.align(external_data_size, 4) +
                          len(U_BOOT_NODTB_DATA))
 
         # The data should be outside the FIT
@@ -3802,8 +3802,8 @@ class TestFunctional(unittest.TestCase):
         """Test pad-before, pad-after for entries in sections"""
         data, _, _, out_dtb_fname = self._DoReadFileDtb(
             '166_pad_in_sections.dts', update_dtb=True)
-        expected = (U_BOOT_DATA + tools.GetBytes(ord('!'), 12) +
-                    U_BOOT_DATA + tools.GetBytes(ord('!'), 6) +
+        expected = (U_BOOT_DATA + tools.get_bytes(ord('!'), 12) +
+                    U_BOOT_DATA + tools.get_bytes(ord('!'), 6) +
                     U_BOOT_DATA)
         self.assertEqual(expected, data)
 
@@ -3846,14 +3846,14 @@ class TestFunctional(unittest.TestCase):
         node = dtb.GetNode('/images/kernel')
         data = dtb.GetProps(node)["data"].bytes
         align_pad = 0x10 - (len(U_BOOT_SPL_DATA) % 0x10)
-        expected = (tools.GetBytes(0, 0x20) + U_BOOT_SPL_DATA +
-                    tools.GetBytes(0, align_pad) + U_BOOT_DATA)
+        expected = (tools.get_bytes(0, 0x20) + U_BOOT_SPL_DATA +
+                    tools.get_bytes(0, align_pad) + U_BOOT_DATA)
         self.assertEqual(expected, data)
 
         node = dtb.GetNode('/images/fdt-1')
         data = dtb.GetProps(node)["data"].bytes
-        expected = (U_BOOT_SPL_DTB_DATA + tools.GetBytes(0, 20) +
-                    tools.ToBytes(TEXT_DATA) + tools.GetBytes(0, 30) +
+        expected = (U_BOOT_SPL_DTB_DATA + tools.get_bytes(0, 20) +
+                    tools.to_bytes(TEXT_DATA) + tools.get_bytes(0, 30) +
                     U_BOOT_DTB_DATA)
         self.assertEqual(expected, data)
 
@@ -4069,8 +4069,8 @@ class TestFunctional(unittest.TestCase):
     def testSkipAtStartPad(self):
         """Test handling of skip-at-start section with padded entry"""
         data = self._DoReadFile('178_skip_at_start_pad.dts')
-        before = tools.GetBytes(0, 8)
-        after = tools.GetBytes(0, 4)
+        before = tools.get_bytes(0, 8)
+        after = tools.get_bytes(0, 4)
         all = before + U_BOOT_DATA + after
         self.assertEqual(all, data)
 
@@ -4089,8 +4089,8 @@ class TestFunctional(unittest.TestCase):
     def testSkipAtStartSectionPad(self):
         """Test handling of skip-at-start section with padding"""
         data = self._DoReadFile('179_skip_at_start_section_pad.dts')
-        before = tools.GetBytes(0, 8)
-        after = tools.GetBytes(0, 4)
+        before = tools.get_bytes(0, 8)
+        after = tools.get_bytes(0, 4)
         all = before + U_BOOT_DATA + after
         self.assertEqual(all, data)
 
@@ -4110,23 +4110,23 @@ class TestFunctional(unittest.TestCase):
     def testSectionPad(self):
         """Testing padding with sections"""
         data = self._DoReadFile('180_section_pad.dts')
-        expected = (tools.GetBytes(ord('&'), 3) +
-                    tools.GetBytes(ord('!'), 5) +
+        expected = (tools.get_bytes(ord('&'), 3) +
+                    tools.get_bytes(ord('!'), 5) +
                     U_BOOT_DATA +
-                    tools.GetBytes(ord('!'), 1) +
-                    tools.GetBytes(ord('&'), 2))
+                    tools.get_bytes(ord('!'), 1) +
+                    tools.get_bytes(ord('&'), 2))
         self.assertEqual(expected, data)
 
     def testSectionAlign(self):
         """Testing alignment with sections"""
         data = self._DoReadFileDtb('181_section_align.dts', map=True)[0]
         expected = (b'\0' +                         # fill section
-                    tools.GetBytes(ord('&'), 1) +   # padding to section align
+                    tools.get_bytes(ord('&'), 1) +   # padding to section align
                     b'\0' +                         # fill section
-                    tools.GetBytes(ord('!'), 3) +   # padding to u-boot align
+                    tools.get_bytes(ord('!'), 3) +   # padding to u-boot align
                     U_BOOT_DATA +
-                    tools.GetBytes(ord('!'), 4) +   # padding to u-boot size
-                    tools.GetBytes(ord('!'), 4))    # padding to section size
+                    tools.get_bytes(ord('!'), 4) +   # padding to u-boot size
+                    tools.get_bytes(ord('!'), 4))    # padding to section size
         self.assertEqual(expected, data)
 
     def testCompressImage(self):
@@ -4357,7 +4357,7 @@ class TestFunctional(unittest.TestCase):
             '188_image_entryarg.dts',use_real_dtb=True, update_dtb=True,
             entry_args=entry_args)
 
-        image_fname = tools.GetOutputFilename('image.bin')
+        image_fname = tools.get_output_filename('image.bin')
         orig_image = control.images['image']
 
         # This should not generate an error about the missing 'cros-ec-rw-path'
@@ -4378,7 +4378,7 @@ class TestFunctional(unittest.TestCase):
     def testReadImageSkip(self):
         """Test reading an image and accessing its FDT map"""
         data = self.data = self._DoReadFileRealDtb('191_read_image_skip.dts')
-        image_fname = tools.GetOutputFilename('image.bin')
+        image_fname = tools.get_output_filename('image.bin')
         orig_image = control.images['image']
         image = Image.FromFile(image_fname)
         self.assertEqual(orig_image.GetEntries().keys(),
@@ -4406,7 +4406,7 @@ class TestFunctional(unittest.TestCase):
         # ELF file with a '__bss_size' symbol
         self._SetupTplElf()
         data = self._DoReadFile('193_tpl_bss_pad.dts')
-        self.assertEqual(U_BOOT_TPL_DATA + tools.GetBytes(0, 10) + U_BOOT_DATA,
+        self.assertEqual(U_BOOT_TPL_DATA + tools.get_bytes(0, 10) + U_BOOT_DATA,
                          data)
 
     def testTplBssPadMissing(self):
@@ -4605,8 +4605,8 @@ class TestFunctional(unittest.TestCase):
         """Test a collection"""
         data = self._DoReadFile('198_collection.dts')
         self.assertEqual(U_BOOT_NODTB_DATA + U_BOOT_DTB_DATA +
-                         tools.GetBytes(0xff, 2) + U_BOOT_NODTB_DATA +
-                         tools.GetBytes(0xfe, 3) + U_BOOT_DTB_DATA,
+                         tools.get_bytes(0xff, 2) + U_BOOT_NODTB_DATA +
+                         tools.get_bytes(0xfe, 3) + U_BOOT_DTB_DATA,
                          data)
 
     def testCollectionSection(self):
@@ -4617,21 +4617,21 @@ class TestFunctional(unittest.TestCase):
         # missing.
         data = self._DoReadFile('199_collection_section.dts')
         section = U_BOOT_NODTB_DATA + U_BOOT_DTB_DATA
-        self.assertEqual(section + U_BOOT_DATA + tools.GetBytes(0xff, 2) +
-                         section + tools.GetBytes(0xfe, 3) + U_BOOT_DATA,
+        self.assertEqual(section + U_BOOT_DATA + tools.get_bytes(0xff, 2) +
+                         section + tools.get_bytes(0xfe, 3) + U_BOOT_DATA,
                          data)
 
     def testAlignDefault(self):
         """Test that default alignment works on sections"""
         data = self._DoReadFile('200_align_default.dts')
-        expected = (U_BOOT_DATA + tools.GetBytes(0, 8 - len(U_BOOT_DATA)) +
+        expected = (U_BOOT_DATA + tools.get_bytes(0, 8 - len(U_BOOT_DATA)) +
                     U_BOOT_DATA)
         # Special alignment for section
-        expected += tools.GetBytes(0, 32 - len(expected))
+        expected += tools.get_bytes(0, 32 - len(expected))
         # No alignment within the nested section
         expected += U_BOOT_DATA + U_BOOT_NODTB_DATA;
         # Now the final piece, which should be default-aligned
-        expected += tools.GetBytes(0, 88 - len(expected)) + U_BOOT_NODTB_DATA
+        expected += tools.get_bytes(0, 88 - len(expected)) + U_BOOT_NODTB_DATA
         self.assertEqual(expected, data)
 
     def testPackOpenSBI(self):
@@ -4642,9 +4642,9 @@ class TestFunctional(unittest.TestCase):
     def testSectionsSingleThread(self):
         """Test sections without multithreading"""
         data = self._DoReadFileDtb('055_sections.dts', threads=0)[0]
-        expected = (U_BOOT_DATA + tools.GetBytes(ord('!'), 12) +
-                    U_BOOT_DATA + tools.GetBytes(ord('a'), 12) +
-                    U_BOOT_DATA + tools.GetBytes(ord('&'), 4))
+        expected = (U_BOOT_DATA + tools.get_bytes(ord('!'), 12) +
+                    U_BOOT_DATA + tools.get_bytes(ord('a'), 12) +
+                    U_BOOT_DATA + tools.get_bytes(ord('&'), 4))
         self.assertEqual(expected, data)
 
     def testThreadTimeout(self):
@@ -4677,7 +4677,7 @@ class TestFunctional(unittest.TestCase):
         # definition in the correct place
         syms = elf.GetSymbolFileOffset(infile,
                                        ['dtb_embed_begin', 'dtb_embed_end'])
-        data = tools.ReadFile(outfile)
+        data = tools.read_file(outfile)
         dtb_data = data[syms['dtb_embed_begin'].offset:
                         syms['dtb_embed_end'].offset]
 
@@ -4756,7 +4756,7 @@ class TestFunctional(unittest.TestCase):
 
         # Set up a version file to make sure that works
         version = 'v2025.01-rc2'
-        tools.WriteFile(os.path.join(self._indir, 'version'), version,
+        tools.write_file(os.path.join(self._indir, 'version'), version,
                         binary=False)
         self.assertEqual(version, state.GetVersion(self._indir))
 
@@ -4780,7 +4780,7 @@ fdt         fdtmap                Extract the devicetree blob from the fdtmap
 
             # Check that we can read it and it can be scanning, meaning it does
             # not have a 16-byte fdtmap header
-            data = tools.ReadFile(dtb)
+            data = tools.read_file(dtb)
             dtb = fdt.Fdt.FromData(data)
             dtb.Scan()
 
@@ -4788,7 +4788,7 @@ fdt         fdtmap                Extract the devicetree blob from the fdtmap
             fname = os.path.join(tmpdir, 'fdt.dtb')
             self._DoBinman('extract', '-i', updated_fname, '-F', 'dummy',
                            '-f', fname, 'u-boot')
-            data = tools.ReadFile(fname)
+            data = tools.read_file(fname)
             self.assertEqual(U_BOOT_DATA, data)
 
         finally:
@@ -4917,7 +4917,7 @@ fdt         fdtmap                Extract the devicetree blob from the fdtmap
         fdtmap_data = data[fdtmap.image_pos:fdtmap.image_pos + fdtmap.size]
         magic = fdtmap_data[:8]
         self.assertEqual(b'_FDTMAP_', magic)
-        self.assertEqual(tools.GetBytes(0, 8), fdtmap_data[8:16])
+        self.assertEqual(tools.get_bytes(0, 8), fdtmap_data[8:16])
 
         fdt_data = fdtmap_data[16:]
         dtb = fdt.Fdt.FromData(fdt_data)
@@ -4944,25 +4944,25 @@ fdt         fdtmap                Extract the devicetree blob from the fdtmap
     def testFipExtractOneEntry(self):
         """Test extracting a single entry fron an FIP"""
         self._DoReadFileRealDtb('207_fip_ls.dts')
-        image_fname = tools.GetOutputFilename('image.bin')
+        image_fname = tools.get_output_filename('image.bin')
         fname = os.path.join(self._indir, 'output.extact')
         control.ExtractEntries(image_fname, fname, None, ['atf-fip/u-boot'])
-        data = tools.ReadFile(fname)
+        data = tools.read_file(fname)
         self.assertEqual(U_BOOT_DATA, data)
 
     def testFipReplace(self):
         """Test replacing a single file in a FIP"""
-        expected = U_BOOT_DATA + tools.GetBytes(0x78, 50)
+        expected = U_BOOT_DATA + tools.get_bytes(0x78, 50)
         data = self._DoReadFileRealDtb('208_fip_replace.dts')
-        updated_fname = tools.GetOutputFilename('image-updated.bin')
-        tools.WriteFile(updated_fname, data)
+        updated_fname = tools.get_output_filename('image-updated.bin')
+        tools.write_file(updated_fname, data)
         entry_name = 'atf-fip/u-boot'
         control.WriteEntry(updated_fname, entry_name, expected,
                            allow_resize=True)
         actual = control.ReadEntry(updated_fname, entry_name)
         self.assertEqual(expected, actual)
 
-        new_data = tools.ReadFile(updated_fname)
+        new_data = tools.read_file(updated_fname)
         hdr, fents = fip_util.decode_fip(new_data)
 
         self.assertEqual(2, len(fents))
@@ -4999,7 +4999,7 @@ fdt         fdtmap                Extract the devicetree blob from the fdtmap
         self.assertEqual(True, fent.valid)
 
         rest = data[0x60 + len(ATF_BL31_DATA):0x100]
-        self.assertEqual(tools.GetBytes(0xff, len(rest)), rest)
+        self.assertEqual(tools.get_bytes(0xff, len(rest)), rest)
 
     def testFipBadAlign(self):
         """Test that an invalid alignment value in a FIP is detected"""
@@ -5055,7 +5055,7 @@ fdt         fdtmap                Extract the devicetree blob from the fdtmap
 
     def testFetchBintools(self):
         def fail_download(url):
-            """Take the tools.Download() function by raising an exception"""
+            """Take the tools.download() function by raising an exception"""
             raise urllib.error.URLError('my error')
 
         args = ['tool']
@@ -5070,7 +5070,7 @@ fdt         fdtmap                Extract the devicetree blob from the fdtmap
         self.assertIn('Please specify bintools to fetch', str(e.exception))
 
         args = ['tool', '--fetch', '_testing']
-        with unittest.mock.patch.object(tools, 'Download',
+        with unittest.mock.patch.object(tools, 'download',
                                         side_effect=fail_download):
             with test_util.capture_sys_output() as (stdout, _):
                 self._DoBinman(*args)
diff --git a/tools/binman/image.py b/tools/binman/image.py
index cb5279c7ea..93a1d3e645 100644
--- a/tools/binman/image.py
+++ b/tools/binman/image.py
@@ -111,7 +111,7 @@ class Image(section.Entry_section):
         Raises:
             ValueError if something goes wrong
         """
-        data = tools.ReadFile(fname)
+        data = tools.read_file(fname)
         size = len(data)
 
         # First look for an image header
@@ -128,8 +128,8 @@ class Image(section.Entry_section):
         dtb_size = probe_dtb.GetFdtObj().totalsize()
         fdtmap_data = data[pos:pos + dtb_size + fdtmap.FDTMAP_HDR_LEN]
         fdt_data = fdtmap_data[fdtmap.FDTMAP_HDR_LEN:]
-        out_fname = tools.GetOutputFilename('fdtmap.in.dtb')
-        tools.WriteFile(out_fname, fdt_data)
+        out_fname = tools.get_output_filename('fdtmap.in.dtb')
+        tools.write_file(out_fname, fdt_data)
         dtb = fdt.Fdt(out_fname)
         dtb.Scan()
 
@@ -174,7 +174,7 @@ class Image(section.Entry_section):
 
     def BuildImage(self):
         """Write the image to a file"""
-        fname = tools.GetOutputFilename(self._filename)
+        fname = tools.get_output_filename(self._filename)
         tout.Info("Writing image to '%s'" % fname)
         with open(fname, 'wb') as fd:
             data = self.GetPaddedData()
@@ -188,7 +188,7 @@ class Image(section.Entry_section):
             Filename of map file written
         """
         filename = '%s.map' % self.image_name
-        fname = tools.GetOutputFilename(filename)
+        fname = tools.get_output_filename(filename)
         with open(fname, 'w') as fd:
             print('%8s  %8s  %8s  %s' % ('ImagePos', 'Offset', 'Size', 'Name'),
                   file=fd)
diff --git a/tools/binman/state.py b/tools/binman/state.py
index af0a65e841..b27c800126 100644
--- a/tools/binman/state.py
+++ b/tools/binman/state.py
@@ -138,8 +138,8 @@ def GetFdtContents(etype='u-boot-dtb'):
         data = GetFdtForEtype(etype).GetContents()
     else:
         fname = output_fdt_info[etype][1]
-        pathname = tools.GetInputFilename(fname)
-        data = tools.ReadFile(pathname)
+        pathname = tools.get_input_filename(fname)
+        data = tools.read_file(pathname)
     return pathname, data
 
 def UpdateFdtContents(etype, data):
@@ -154,7 +154,7 @@ def UpdateFdtContents(etype, data):
     """
     dtb, fname = output_fdt_info[etype]
     dtb_fname = dtb.GetFilename()
-    tools.WriteFile(dtb_fname, data)
+    tools.write_file(dtb_fname, data)
     dtb = fdt.FdtScan(dtb_fname)
     output_fdt_info[etype] = [dtb, fname]
 
@@ -235,12 +235,12 @@ def Prepare(images, dtb):
     else:
         fdt_set = {}
         for etype, fname in DTB_TYPE_FNAME.items():
-            infile = tools.GetInputFilename(fname, allow_missing=True)
+            infile = tools.get_input_filename(fname, allow_missing=True)
             if infile and os.path.exists(infile):
                 fname_dtb = fdt_util.EnsureCompiled(infile)
-                out_fname = tools.GetOutputFilename('%s.out' %
+                out_fname = tools.get_output_filename('%s.out' %
                         os.path.split(fname)[1])
-                tools.WriteFile(out_fname, tools.ReadFile(fname_dtb))
+                tools.write_file(out_fname, tools.read_file(fname_dtb))
                 other_dtb = fdt.FdtScan(out_fname)
                 output_fdt_info[etype] = [other_dtb, out_fname]
 
@@ -271,13 +271,13 @@ def PrepareFromLoadedData(image):
     tout.Info("   Found device tree type 'fdtmap' '%s'" % image.fdtmap_dtb.name)
     for etype, value in image.GetFdts().items():
         entry, fname = value
-        out_fname = tools.GetOutputFilename('%s.dtb' % entry.etype)
+        out_fname = tools.get_output_filename('%s.dtb' % entry.etype)
         tout.Info("   Found device tree type '%s' at '%s' path '%s'" %
                   (etype, out_fname, entry.GetPath()))
         entry._filename = entry.GetDefaultFilename()
         data = entry.ReadData()
 
-        tools.WriteFile(out_fname, data)
+        tools.write_file(out_fname, data)
         dtb = fdt.Fdt(out_fname)
         dtb.Scan()
         image_node = dtb.GetNode('/binman')
@@ -529,7 +529,7 @@ def GetVersion(path=OUR_PATH):
     """
     version_fname = os.path.join(path, 'version')
     if os.path.exists(version_fname):
-        version = tools.ReadFile(version_fname, binary=False)
+        version = tools.read_file(version_fname, binary=False)
     else:
         version = '(unreleased)'
     return version
diff --git a/tools/buildman/control.py b/tools/buildman/control.py
index eee8113066..e8a531eed4 100644
--- a/tools/buildman/control.py
+++ b/tools/buildman/control.py
@@ -135,7 +135,7 @@ def DoBuildman(options, args, toolchains=None, make_func=None, boards=None,
     global builder
 
     if options.full_help:
-        tools.PrintFullHelp(
+        tools.print_full_help(
             os.path.join(os.path.dirname(os.path.realpath(sys.argv[0])), 'README')
         )
         return 0
diff --git a/tools/buildman/func_test.py b/tools/buildman/func_test.py
index c2e0b0b5c6..b92081863e 100644
--- a/tools/buildman/func_test.py
+++ b/tools/buildman/func_test.py
@@ -422,7 +422,7 @@ class TestFunctional(unittest.TestCase):
                 if arg.startswith('O='):
                     out_dir = arg[2:]
             fname = os.path.join(cwd or '', out_dir, 'u-boot')
-            tools.WriteFile(fname, b'U-Boot')
+            tools.write_file(fname, b'U-Boot')
             if type(commit) is not str:
                 stderr = self._error.get((brd.target, commit.sequence))
             if stderr:
diff --git a/tools/buildman/test.py b/tools/buildman/test.py
index 2751377e87..43b012171d 100644
--- a/tools/buildman/test.py
+++ b/tools/buildman/test.py
@@ -607,7 +607,7 @@ class TestBuild(unittest.TestCase):
 
     def testPrepareOutputSpace(self):
         def _Touch(fname):
-            tools.WriteFile(os.path.join(base_dir, fname), b'')
+            tools.write_file(os.path.join(base_dir, fname), b'')
 
         base_dir = tempfile.mkdtemp()
 
diff --git a/tools/buildman/toolchain.py b/tools/buildman/toolchain.py
index adc75a7a0b..d88c155b5f 100644
--- a/tools/buildman/toolchain.py
+++ b/tools/buildman/toolchain.py
@@ -201,11 +201,11 @@ class Toolchain:
             # We'll use MakeArgs() to provide this
             pass
         elif full_path:
-            env[b'CROSS_COMPILE'] = tools.ToBytes(
+            env[b'CROSS_COMPILE'] = tools.to_bytes(
                 wrapper + os.path.join(self.path, self.cross))
         else:
-            env[b'CROSS_COMPILE'] = tools.ToBytes(wrapper + self.cross)
-            env[b'PATH'] = tools.ToBytes(self.path) + b':' + env[b'PATH']
+            env[b'CROSS_COMPILE'] = tools.to_bytes(wrapper + self.cross)
+            env[b'PATH'] = tools.to_bytes(self.path) + b':' + env[b'PATH']
 
         env[b'LC_ALL'] = b'C'
 
@@ -504,7 +504,7 @@ class Toolchains:
             url = '%s/%s/%s/' % (base, arch, version)
             print('Checking: %s' % url)
             response = urllib.request.urlopen(url)
-            html = tools.ToString(response.read())
+            html = tools.to_string(response.read())
             parser = MyHTMLParser(fetch_arch)
             parser.feed(html)
             if fetch_arch == 'list':
@@ -571,7 +571,7 @@ class Toolchains:
             os.mkdir(dest)
 
         # Download the tar file for this toolchain and unpack it
-        tarfile, tmpdir = tools.Download(url, '.buildman')
+        tarfile, tmpdir = tools.download(url, '.buildman')
         if not tarfile:
             return 1
         print(col.Color(col.GREEN, 'Unpacking to: %s' % dest), end=' ')
diff --git a/tools/dtoc/fdt.py b/tools/dtoc/fdt.py
index 32a7aa9829..7e13757a1b 100644
--- a/tools/dtoc/fdt.py
+++ b/tools/dtoc/fdt.py
@@ -396,7 +396,7 @@ class Node:
             prop_name: Name of property
         """
         self.props[prop_name] = Prop(self, None, prop_name,
-                                     tools.GetBytes(0, 4))
+                                     tools.get_bytes(0, 4))
 
     def AddEmptyProp(self, prop_name, len):
         """Add a property with a fixed data size, for filling in later
@@ -408,7 +408,7 @@ class Node:
             prop_name: Name of property
             len: Length of data in property
         """
-        value = tools.GetBytes(0, len)
+        value = tools.get_bytes(0, len)
         self.props[prop_name] = Prop(self, None, prop_name, value)
 
     def _CheckProp(self, prop_name):
diff --git a/tools/dtoc/fdt_util.py b/tools/dtoc/fdt_util.py
index 19eb13aef3..19e645daa0 100644
--- a/tools/dtoc/fdt_util.py
+++ b/tools/dtoc/fdt_util.py
@@ -75,12 +75,12 @@ def EnsureCompiled(fname, tmpdir=None, capture_stderr=False):
         dts_input = os.path.join(tmpdir, 'source.dts')
         dtb_output = os.path.join(tmpdir, 'source.dtb')
     else:
-        dts_input = tools.GetOutputFilename('source.dts')
-        dtb_output = tools.GetOutputFilename('source.dtb')
+        dts_input = tools.get_output_filename('source.dts')
+        dtb_output = tools.get_output_filename('source.dtb')
 
     search_paths = [os.path.join(os.getcwd(), 'include')]
     root, _ = os.path.splitext(fname)
-    cc, args = tools.GetTargetCompileTool('cc')
+    cc, args = tools.get_target_compile_tool('cc')
     args += ['-E', '-P', '-x', 'assembler-with-cpp', '-D__ASSEMBLY__']
     args += ['-Ulinux']
     for path in search_paths:
@@ -92,7 +92,7 @@ def EnsureCompiled(fname, tmpdir=None, capture_stderr=False):
     search_list = []
     for path in search_paths:
         search_list.extend(['-i', path])
-    dtc, args = tools.GetTargetCompileTool('dtc')
+    dtc, args = tools.get_target_compile_tool('dtc')
     args += ['-I', 'dts', '-o', dtb_output, '-O', 'dtb',
             '-W', 'no-unit_address_vs_reg']
     args.extend(search_list)
diff --git a/tools/dtoc/test_dtoc.py b/tools/dtoc/test_dtoc.py
index ee17b8daf9..ea88954923 100755
--- a/tools/dtoc/test_dtoc.py
+++ b/tools/dtoc/test_dtoc.py
@@ -112,12 +112,12 @@ class TestDtoc(unittest.TestCase):
     """Tests for dtoc"""
     @classmethod
     def setUpClass(cls):
-        tools.PrepareOutputDir(None)
+        tools.prepare_output_dir(None)
         cls.maxDiff = None
 
     @classmethod
     def tearDownClass(cls):
-        tools.FinaliseOutputDir()
+        tools.finalise_output_dir()
 
     @staticmethod
     def _write_python_string(fname, data):
@@ -218,7 +218,7 @@ class TestDtoc(unittest.TestCase):
     def test_empty_file(self):
         """Test output from a device tree file with no nodes"""
         dtb_file = get_dtb_file('dtoc_test_empty.dts')
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
 
         # Run this one without saved_scan to complete test coverage
         dtb_platdata.run_steps(['struct'], dtb_file, False, output, [], None,
@@ -801,7 +801,7 @@ DM_DEVICE_INST(test0) = {
     def test_simple(self):
         """Test output from some simple nodes with various types of data"""
         dtb_file = get_dtb_file('dtoc_test_simple.dts')
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         self.run_test(['struct'], dtb_file, output)
         with open(output) as infile:
             data = infile.read()
@@ -822,14 +822,14 @@ DM_DEVICE_INST(test0) = {
 
         # Try the 'all' command
         self.run_test(['all'], dtb_file, output)
-        data = tools.ReadFile(output, binary=False)
+        data = tools.read_file(output, binary=False)
         self._check_strings(
             self.decl_text + self.platdata_text + self.struct_text, data)
 
     def test_driver_alias(self):
         """Test output from a device tree file with a driver alias"""
         dtb_file = get_dtb_file('dtoc_test_driver_alias.dts')
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         self.run_test(['struct'], dtb_file, output)
         with open(output) as infile:
             data = infile.read()
@@ -875,7 +875,7 @@ U_BOOT_DRVINFO(gpios_at_0) = {
     def test_invalid_driver(self):
         """Test output from a device tree file with an invalid driver"""
         dtb_file = get_dtb_file('dtoc_test_invalid_driver.dts')
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         with test_util.capture_sys_output() as _:
             dtb_platdata.run_steps(
                 ['struct'], dtb_file, False, output, [], None, False,
@@ -918,7 +918,7 @@ U_BOOT_DRVINFO(spl_test) = {
     def test_phandle(self):
         """Test output from a node containing a phandle reference"""
         dtb_file = get_dtb_file('dtoc_test_phandle.dts')
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         self.run_test(['struct'], dtb_file, output)
         with open(output) as infile:
             data = infile.read()
@@ -1013,7 +1013,7 @@ U_BOOT_DRVINFO(phandle_target) = {
     def test_phandle_single(self):
         """Test output from a node containing a phandle reference"""
         dtb_file = get_dtb_file('dtoc_test_phandle_single.dts')
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         self.run_test(['struct'], dtb_file, output)
         with open(output) as infile:
             data = infile.read()
@@ -1029,7 +1029,7 @@ struct dtd_target {
     def test_phandle_reorder(self):
         """Test that phandle targets are generated before their references"""
         dtb_file = get_dtb_file('dtoc_test_phandle_reorder.dts')
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         self.run_test(['platdata'], dtb_file, output)
         with open(output) as infile:
             data = infile.read()
@@ -1071,7 +1071,7 @@ U_BOOT_DRVINFO(phandle_target) = {
     def test_phandle_cd_gpio(self):
         """Test that phandle targets are generated when unsing cd-gpios"""
         dtb_file = get_dtb_file('dtoc_test_phandle_cd_gpios.dts')
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         dtb_platdata.run_steps(
             ['platdata'], dtb_file, False, output, [], None, False,
             warning_disabled=True, scan=copy_scan())
@@ -1157,7 +1157,7 @@ U_BOOT_DRVINFO(phandle_target) = {
         """Test a node containing an invalid phandle fails"""
         dtb_file = get_dtb_file('dtoc_test_phandle_bad.dts',
                                 capture_stderr=True)
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         with self.assertRaises(ValueError) as exc:
             self.run_test(['struct'], dtb_file, output)
         self.assertIn("Cannot parse 'clocks' in node 'phandle-source'",
@@ -1167,7 +1167,7 @@ U_BOOT_DRVINFO(phandle_target) = {
         """Test a phandle target missing its #*-cells property"""
         dtb_file = get_dtb_file('dtoc_test_phandle_bad2.dts',
                                 capture_stderr=True)
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         with self.assertRaises(ValueError) as exc:
             self.run_test(['struct'], dtb_file, output)
         self.assertIn("Node 'phandle-target' has no cells property",
@@ -1176,7 +1176,7 @@ U_BOOT_DRVINFO(phandle_target) = {
     def test_addresses64(self):
         """Test output from a node with a 'reg' property with na=2, ns=2"""
         dtb_file = get_dtb_file('dtoc_test_addr64.dts')
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         self.run_test(['struct'], dtb_file, output)
         with open(output) as infile:
             data = infile.read()
@@ -1245,7 +1245,7 @@ U_BOOT_DRVINFO(test3) = {
     def test_addresses32(self):
         """Test output from a node with a 'reg' property with na=1, ns=1"""
         dtb_file = get_dtb_file('dtoc_test_addr32.dts')
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         self.run_test(['struct'], dtb_file, output)
         with open(output) as infile:
             data = infile.read()
@@ -1299,7 +1299,7 @@ U_BOOT_DRVINFO(test2) = {
     def test_addresses64_32(self):
         """Test output from a node with a 'reg' property with na=2, ns=1"""
         dtb_file = get_dtb_file('dtoc_test_addr64_32.dts')
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         self.run_test(['struct'], dtb_file, output)
         with open(output) as infile:
             data = infile.read()
@@ -1368,7 +1368,7 @@ U_BOOT_DRVINFO(test3) = {
     def test_addresses32_64(self):
         """Test output from a node with a 'reg' property with na=1, ns=2"""
         dtb_file = get_dtb_file('dtoc_test_addr32_64.dts')
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         self.run_test(['struct'], dtb_file, output)
         with open(output) as infile:
             data = infile.read()
@@ -1438,7 +1438,7 @@ U_BOOT_DRVINFO(test3) = {
         """Test that a reg property with an invalid type generates an error"""
         # Capture stderr since dtc will emit warnings for this file
         dtb_file = get_dtb_file('dtoc_test_bad_reg.dts', capture_stderr=True)
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         with self.assertRaises(ValueError) as exc:
             self.run_test(['struct'], dtb_file, output)
         self.assertIn("Node 'spl-test' reg property is not an int",
@@ -1448,7 +1448,7 @@ U_BOOT_DRVINFO(test3) = {
         """Test that a reg property with an invalid cell count is detected"""
         # Capture stderr since dtc will emit warnings for this file
         dtb_file = get_dtb_file('dtoc_test_bad_reg2.dts', capture_stderr=True)
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         with self.assertRaises(ValueError) as exc:
             self.run_test(['struct'], dtb_file, output)
         self.assertIn(
@@ -1458,7 +1458,7 @@ U_BOOT_DRVINFO(test3) = {
     def test_add_prop(self):
         """Test that a subequent node can add a new property to a struct"""
         dtb_file = get_dtb_file('dtoc_test_add_prop.dts')
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         self.run_test(['struct'], dtb_file, output)
         with open(output) as infile:
             data = infile.read()
@@ -1523,9 +1523,9 @@ U_BOOT_DRVINFO(spl_test2) = {
     def test_multi_to_file(self):
         """Test output of multiple pieces to a single file"""
         dtb_file = get_dtb_file('dtoc_test_simple.dts')
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         self.run_test(['all'], dtb_file, output)
-        data = tools.ReadFile(output, binary=False)
+        data = tools.read_file(output, binary=False)
         self._check_strings(
             self.decl_text + self.platdata_text + self.struct_text, data)
 
@@ -1539,7 +1539,7 @@ U_BOOT_DRVINFO(spl_test2) = {
     def test_bad_command(self):
         """Test running dtoc with an invalid command"""
         dtb_file = get_dtb_file('dtoc_test_simple.dts')
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         with self.assertRaises(ValueError) as exc:
             self.run_test(['invalid-cmd'], dtb_file, output)
         self.assertIn(
@@ -1557,12 +1557,12 @@ U_BOOT_DRVINFO(spl_test2) = {
 
     def check_output_dirs(self, instantiate):
         # Remove the directory so that files from other tests are not there
-        tools._RemoveOutputDir()
-        tools.PrepareOutputDir(None)
+        tools._remove_output_dir()
+        tools.prepare_output_dir(None)
 
         # This should create the .dts and .dtb in the output directory
         dtb_file = get_dtb_file('dtoc_test_simple.dts')
-        outdir = tools.GetOutputDir()
+        outdir = tools.get_output_dir()
         fnames = glob.glob(outdir + '/*')
         self.assertEqual(2, len(fnames))
 
@@ -1606,7 +1606,7 @@ U_BOOT_DRVINFO(spl_test2) = {
                 Scanner: scanner to use
         """
         dtb_file = get_dtb_file('dtoc_test_simple.dts')
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
 
         # Take a copy before messing with it
         scan = copy_scan()
@@ -1694,7 +1694,7 @@ U_BOOT_DRVINFO(spl_test2) = {
     def test_alias_read(self):
         """Test obtaining aliases"""
         dtb_file = get_dtb_file('dtoc_test_inst.dts')
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         plat = self.run_test(['struct'], dtb_file, output)
 
         scan = plat._scan
@@ -1716,7 +1716,7 @@ U_BOOT_DRVINFO(spl_test2) = {
     def test_alias_read_bad(self):
         """Test invalid alias property name"""
         dtb_file = get_dtb_file('dtoc_test_alias_bad.dts')
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         with self.assertRaises(ValueError) as exc:
             plat = self.run_test(['struct'], dtb_file, output)
         self.assertIn("Cannot decode alias 'i2c4-'", str(exc.exception))
@@ -1728,7 +1728,7 @@ U_BOOT_DRVINFO(spl_test2) = {
         #    node (/does/not/exist)
         dtb_file = get_dtb_file('dtoc_test_alias_bad_path.dts', True)
 
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         with self.assertRaises(ValueError) as exc:
             plat = self.run_test(['struct'], dtb_file, output)
         self.assertIn("Alias 'i2c4' path '/does/not/exist' not found",
@@ -1737,7 +1737,7 @@ U_BOOT_DRVINFO(spl_test2) = {
     def test_alias_read_bad_uclass(self):
         """Test alias for a uclass that doesn't exist"""
         dtb_file = get_dtb_file('dtoc_test_alias_bad_uc.dts')
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         with test_util.capture_sys_output() as (stdout, _):
             plat = self.run_test(['struct'], dtb_file, output)
         self.assertEqual("Could not find uclass for alias 'other1'",
@@ -1746,7 +1746,7 @@ U_BOOT_DRVINFO(spl_test2) = {
     def test_sequence(self):
         """Test assignment of sequence numnbers"""
         dtb_file = get_dtb_file('dtoc_test_inst.dts')
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         plat = self.run_test(['struct'], dtb_file, output)
 
         scan = plat._scan
@@ -1762,7 +1762,7 @@ U_BOOT_DRVINFO(spl_test2) = {
     def test_process_root(self):
         """Test assignment of sequence numnbers"""
         dtb_file = get_dtb_file('dtoc_test_simple.dts')
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
 
         # Take a copy before messing with it
         scan = copy_scan()
@@ -1781,7 +1781,7 @@ U_BOOT_DRVINFO(spl_test2) = {
     def test_simple_inst(self):
         """Test output from some simple nodes with instantiate enabled"""
         dtb_file = get_dtb_file('dtoc_test_inst.dts')
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
 
         self.run_test(['decl'], dtb_file, output, True)
         with open(output) as infile:
@@ -1804,7 +1804,7 @@ U_BOOT_DRVINFO(spl_test2) = {
     def test_inst_no_hdr(self):
         """Test dealing with a struct tsssshat has no header"""
         dtb_file = get_dtb_file('dtoc_test_inst.dts')
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
 
         # Run it once to set everything up
         plat = self.run_test(['decl'], dtb_file, output, True)
@@ -1824,7 +1824,7 @@ U_BOOT_DRVINFO(spl_test2) = {
     def test_missing_props(self):
         """Test detection of a parent node with no properties"""
         dtb_file = get_dtb_file('dtoc_test_noprops.dts', capture_stderr=True)
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         with self.assertRaises(ValueError) as exc:
             self.run_test(['struct'], dtb_file, output)
         self.assertIn("Parent node '/i2c@0' has no properties - do you need",
@@ -1833,13 +1833,13 @@ U_BOOT_DRVINFO(spl_test2) = {
     def test_single_reg(self):
         """Test detection of a parent node with no properties"""
         dtb_file = get_dtb_file('dtoc_test_single_reg.dts')
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         self.run_test(['struct'], dtb_file, output)
 
     def test_missing_parent(self):
         """Test detection of a parent node with no properties"""
         dtb_file = get_dtb_file('dtoc_test_noparent.dts', capture_stderr=True)
-        output = tools.GetOutputFilename('output')
+        output = tools.get_output_filename('output')
         with self.assertRaises(ValueError) as exc:
             self.run_test(['device'], dtb_file, output, instantiate=True)
         self.assertIn("Node '/i2c@0/spl-test/pmic@9' requires parent node "
diff --git a/tools/dtoc/test_fdt.py b/tools/dtoc/test_fdt.py
index 55b70e9876..5a4e9e0814 100755
--- a/tools/dtoc/test_fdt.py
+++ b/tools/dtoc/test_fdt.py
@@ -74,11 +74,11 @@ class TestFdt(unittest.TestCase):
     """
     @classmethod
     def setUpClass(cls):
-        tools.PrepareOutputDir(None)
+        tools.prepare_output_dir(None)
 
     @classmethod
     def tearDownClass(cls):
-        tools.FinaliseOutputDir()
+        tools.finalise_output_dir()
 
     def setUp(self):
         self.dtb = fdt.FdtScan(find_dtb_file('dtoc_test_simple.dts'))
@@ -152,11 +152,11 @@ class TestNode(unittest.TestCase):
 
     @classmethod
     def setUpClass(cls):
-        tools.PrepareOutputDir(None)
+        tools.prepare_output_dir(None)
 
     @classmethod
     def tearDownClass(cls):
-        tools.FinaliseOutputDir()
+        tools.finalise_output_dir()
 
     def setUp(self):
         self.dtb = fdt.FdtScan(find_dtb_file('dtoc_test_simple.dts'))
@@ -294,11 +294,11 @@ class TestProp(unittest.TestCase):
 
     @classmethod
     def setUpClass(cls):
-        tools.PrepareOutputDir(None)
+        tools.prepare_output_dir(None)
 
     @classmethod
     def tearDownClass(cls):
-        tools.FinaliseOutputDir()
+        tools.finalise_output_dir()
 
     def setUp(self):
         self.dtb = fdt.FdtScan(find_dtb_file('dtoc_test_simple.dts'))
@@ -370,7 +370,7 @@ class TestProp(unittest.TestCase):
         """Tests the GetEmpty() function for the various supported types"""
         self.assertEqual(True, fdt.Prop.GetEmpty(Type.BOOL))
         self.assertEqual(chr(0), fdt.Prop.GetEmpty(Type.BYTE))
-        self.assertEqual(tools.GetBytes(0, 4), fdt.Prop.GetEmpty(Type.INT))
+        self.assertEqual(tools.get_bytes(0, 4), fdt.Prop.GetEmpty(Type.INT))
         self.assertEqual('', fdt.Prop.GetEmpty(Type.STRING))
 
     def testGetOffset(self):
@@ -501,7 +501,7 @@ class TestProp(unittest.TestCase):
         self.node.AddString('string', val)
         self.dtb.Sync(auto_resize=True)
         data = self.fdt.getprop(self.node.Offset(), 'string')
-        self.assertEqual(tools.ToBytes(val) + b'\0', data)
+        self.assertEqual(tools.to_bytes(val) + b'\0', data)
 
         self.fdt.pack()
         self.node.SetString('string', val + 'x')
@@ -511,24 +511,24 @@ class TestProp(unittest.TestCase):
         self.node.SetString('string', val[:-1])
 
         prop = self.node.props['string']
-        prop.SetData(tools.ToBytes(val))
+        prop.SetData(tools.to_bytes(val))
         self.dtb.Sync(auto_resize=False)
         data = self.fdt.getprop(self.node.Offset(), 'string')
-        self.assertEqual(tools.ToBytes(val), data)
+        self.assertEqual(tools.to_bytes(val), data)
 
         self.node.AddEmptyProp('empty', 5)
         self.dtb.Sync(auto_resize=True)
         prop = self.node.props['empty']
-        prop.SetData(tools.ToBytes(val))
+        prop.SetData(tools.to_bytes(val))
         self.dtb.Sync(auto_resize=False)
         data = self.fdt.getprop(self.node.Offset(), 'empty')
-        self.assertEqual(tools.ToBytes(val), data)
+        self.assertEqual(tools.to_bytes(val), data)
 
         self.node.SetData('empty', b'123')
         self.assertEqual(b'123', prop.bytes)
 
         # Trying adding a lot of data at once
-        self.node.AddData('data', tools.GetBytes(65, 20000))
+        self.node.AddData('data', tools.get_bytes(65, 20000))
         self.dtb.Sync(auto_resize=True)
 
     def testFromData(self):
@@ -562,7 +562,7 @@ class TestProp(unittest.TestCase):
 
     def testGetFilename(self):
         """Test the dtb filename can be provided"""
-        self.assertEqual(tools.GetOutputFilename('source.dtb'),
+        self.assertEqual(tools.get_output_filename('source.dtb'),
                          self.dtb.GetFilename())
 
 
@@ -575,11 +575,11 @@ class TestFdtUtil(unittest.TestCase):
     """
     @classmethod
     def setUpClass(cls):
-        tools.PrepareOutputDir(None)
+        tools.prepare_output_dir(None)
 
     @classmethod
     def tearDownClass(cls):
-        tools.FinaliseOutputDir()
+        tools.finalise_output_dir()
 
     def setUp(self):
         self.dtb = fdt.FdtScan(find_dtb_file('dtoc_test_simple.dts'))
diff --git a/tools/dtoc/test_src_scan.py b/tools/dtoc/test_src_scan.py
index f03cf8ed7c..bdfa669d81 100644
--- a/tools/dtoc/test_src_scan.py
+++ b/tools/dtoc/test_src_scan.py
@@ -43,11 +43,11 @@ class TestSrcScan(unittest.TestCase):
     """Tests for src_scan"""
     @classmethod
     def setUpClass(cls):
-        tools.PrepareOutputDir(None)
+        tools.prepare_output_dir(None)
 
     @classmethod
     def tearDownClass(cls):
-        tools.FinaliseOutputDir()
+        tools.finalise_output_dir()
 
     def test_simple(self):
         """Simple test of scanning drivers"""
@@ -113,7 +113,7 @@ class TestSrcScan(unittest.TestCase):
             pathname = os.path.join(indir, fname)
             dirname = os.path.dirname(pathname)
             os.makedirs(dirname, exist_ok=True)
-            tools.WriteFile(pathname, '', binary=False)
+            tools.write_file(pathname, '', binary=False)
             fname_list.append(pathname)
 
         try:
@@ -142,7 +142,7 @@ class TestSrcScan(unittest.TestCase):
     def test_scan(self):
         """Test scanning of a driver"""
         fname = os.path.join(OUR_PATH, '..', '..', 'drivers/i2c/tegra_i2c.c')
-        buff = tools.ReadFile(fname, False)
+        buff = tools.read_file(fname, False)
         scan = src_scan.Scanner(None, None)
         scan._parse_driver(fname, buff)
         self.assertIn('i2c_tegra', scan._drivers)
@@ -374,8 +374,8 @@ struct another_struct {
 
     def test_struct_scan_errors(self):
         """Test scanning a header file with an invalid unicode file"""
-        output = tools.GetOutputFilename('output.h')
-        tools.WriteFile(output, b'struct this is a test \x81 of bad unicode')
+        output = tools.get_output_filename('output.h')
+        tools.write_file(output, b'struct this is a test \x81 of bad unicode')
 
         scan = src_scan.Scanner(None, None)
         with test_util.capture_sys_output() as (stdout, _):
diff --git a/tools/patman/func_test.py b/tools/patman/func_test.py
index 9f4e03e882..defa1cca71 100644
--- a/tools/patman/func_test.py
+++ b/tools/patman/func_test.py
@@ -338,7 +338,7 @@ Changes in v2:
             text (str): Text to put into the file
         """
         path = os.path.join(self.gitdir, fname)
-        tools.WriteFile(path, text, binary=False)
+        tools.write_file(path, text, binary=False)
         index = self.repo.index
         index.add(fname)
         author = pygit2.Signature('Test user', 'test@email.com')
diff --git a/tools/patman/main.py b/tools/patman/main.py
index c01ae36e9f..63f0774783 100755
--- a/tools/patman/main.py
+++ b/tools/patman/main.py
@@ -159,7 +159,7 @@ elif args.cmd == 'send':
         fd.close()
 
     elif args.full_help:
-        tools.PrintFullHelp(
+        tools.print_full_help(
             os.path.join(os.path.dirname(os.path.realpath(sys.argv[0])), 'README')
         )
 
diff --git a/tools/patman/tools.py b/tools/patman/tools.py
index 5dfecaf917..453f2a7016 100644
--- a/tools/patman/tools.py
+++ b/tools/patman/tools.py
@@ -23,7 +23,7 @@ preserve_outdir = False
 # Path to the Chrome OS chroot, if we know it
 chroot_path = None
 
-# Search paths to use for Filename(), used to find files
+# Search paths to use for filename(), used to find files
 search_paths = []
 
 tool_search_paths = []
@@ -36,7 +36,7 @@ packages = {
 # List of paths to use when looking for an input file
 indir = []
 
-def PrepareOutputDir(dirname, preserve=False):
+def prepare_output_dir(dirname, preserve=False):
     """Select an output directory, ensuring it exists.
 
     This either creates a temporary directory or checks that the one supplied
@@ -69,22 +69,22 @@ def PrepareOutputDir(dirname, preserve=False):
         outdir = tempfile.mkdtemp(prefix='binman.')
         tout.Debug("Using temporary directory '%s'" % outdir)
 
-def _RemoveOutputDir():
+def _remove_output_dir():
     global outdir
 
     shutil.rmtree(outdir)
     tout.Debug("Deleted temporary directory '%s'" % outdir)
     outdir = None
 
-def FinaliseOutputDir():
+def finalise_output_dir():
     global outdir, preserve_outdir
 
     """Tidy up: delete output directory if temporary and not preserved."""
     if outdir and not preserve_outdir:
-        _RemoveOutputDir()
+        _remove_output_dir()
         outdir = None
 
-def GetOutputFilename(fname):
+def get_output_filename(fname):
     """Return a filename within the output directory.
 
     Args:
@@ -95,7 +95,7 @@ def GetOutputFilename(fname):
     """
     return os.path.join(outdir, fname)
 
-def GetOutputDir():
+def get_output_dir():
     """Return the current output directory
 
     Returns:
@@ -103,15 +103,15 @@ def GetOutputDir():
     """
     return outdir
 
-def _FinaliseForTest():
+def _finalise_for_test():
     """Remove the output directory (for use by tests)"""
     global outdir
 
     if outdir:
-        _RemoveOutputDir()
+        _remove_output_dir()
         outdir = None
 
-def SetInputDirs(dirname):
+def set_input_dirs(dirname):
     """Add a list of input directories, where input files are kept.
 
     Args:
@@ -123,7 +123,7 @@ def SetInputDirs(dirname):
     indir = dirname
     tout.Debug("Using input directories %s" % indir)
 
-def GetInputFilename(fname, allow_missing=False):
+def get_input_filename(fname, allow_missing=False):
     """Return a filename for use as input.
 
     Args:
@@ -150,7 +150,7 @@ def GetInputFilename(fname, allow_missing=False):
     raise ValueError("Filename '%s' not found in input path (%s) (cwd='%s')" %
                      (fname, ','.join(indir), os.getcwd()))
 
-def GetInputFilenameGlob(pattern):
+def get_input_filename_glob(pattern):
     """Return a list of filenames for use as input.
 
     Args:
@@ -167,26 +167,26 @@ def GetInputFilenameGlob(pattern):
         files += glob.glob(pathname)
     return sorted(files)
 
-def Align(pos, align):
+def align(pos, align):
     if align:
         mask = align - 1
         pos = (pos + mask) & ~mask
     return pos
 
-def NotPowerOfTwo(num):
+def not_power_of_two(num):
     return num and (num & (num - 1))
 
-def SetToolPaths(toolpaths):
+def set_tool_paths(toolpaths):
     """Set the path to search for tools
 
     Args:
-        toolpaths: List of paths to search for tools executed by Run()
+        toolpaths: List of paths to search for tools executed by run()
     """
     global tool_search_paths
 
     tool_search_paths = toolpaths
 
-def PathHasFile(path_spec, fname):
+def path_has_file(path_spec, fname):
     """Check if a given filename is in the PATH
 
     Args:
@@ -201,7 +201,7 @@ def PathHasFile(path_spec, fname):
             return True
     return False
 
-def GetHostCompileTool(name):
+def get_host_compile_tool(name):
     """Get the host-specific version for a compile tool
 
     This checks the environment variables that specify which version of
@@ -244,7 +244,7 @@ def GetHostCompileTool(name):
         return host_name, extra_args
     return name, []
 
-def GetTargetCompileTool(name, cross_compile=None):
+def get_target_compile_tool(name, cross_compile=None):
     """Get the target-specific version for a compile tool
 
     This first checks the environment variables that specify which
@@ -298,7 +298,7 @@ def GetTargetCompileTool(name, cross_compile=None):
         target_name = cross_compile + name
     elif name == 'ld':
         try:
-            if Run(cross_compile + 'ld.bfd', '-v'):
+            if run(cross_compile + 'ld.bfd', '-v'):
                 target_name = cross_compile + 'ld.bfd'
         except:
             target_name = cross_compile + 'ld'
@@ -353,10 +353,10 @@ def run_result(name, *args, **kwargs):
         raise_on_error = kwargs.get('raise_on_error', True)
         env = get_env_with_path()
         if for_target:
-            name, extra_args = GetTargetCompileTool(name)
+            name, extra_args = get_target_compile_tool(name)
             args = tuple(extra_args) + args
         elif for_host:
-            name, extra_args = GetHostCompileTool(name)
+            name, extra_args = get_host_compile_tool(name)
             args = tuple(extra_args) + args
         name = os.path.expanduser(name)  # Expand paths containing ~
         all_args = (name,) + args
@@ -369,7 +369,7 @@ def run_result(name, *args, **kwargs):
                                   result.stderr or result.stdout))
         return result
     except ValueError:
-        if env and not PathHasFile(env['PATH'], name):
+        if env and not path_has_file(env['PATH'], name):
             msg = "Please install tool '%s'" % name
             package = packages.get(name)
             if package:
@@ -380,7 +380,7 @@ def run_result(name, *args, **kwargs):
 def tool_find(name):
     """Search the current path for a tool
 
-    This uses both PATH and any value from SetToolPaths() to search for a tool
+    This uses both PATH and any value from set_tool_paths() to search for a tool
 
     Args:
         name (str): Name of tool to locate
@@ -400,7 +400,7 @@ def tool_find(name):
         if os.path.isfile(fname) and os.access(fname, os.X_OK):
             return fname
 
-def Run(name, *args, **kwargs):
+def run(name, *args, **kwargs):
     """Run a tool with some arguments
 
     This runs a 'tool', which is a program used by binman to process files and
@@ -421,7 +421,7 @@ def Run(name, *args, **kwargs):
     if result is not None:
         return result.stdout
 
-def Filename(fname):
+def filename(fname):
     """Resolve a file path to an absolute path.
 
     If fname starts with ##/ and chroot is available, ##/ gets replaced with
@@ -455,7 +455,7 @@ def Filename(fname):
     # If not found, just return the standard, unchanged path
     return fname
 
-def ReadFile(fname, binary=True):
+def read_file(fname, binary=True):
     """Read and return the contents of a file.
 
     Args:
@@ -464,13 +464,13 @@ def ReadFile(fname, binary=True):
     Returns:
       data read from file, as a string.
     """
-    with open(Filename(fname), binary and 'rb' or 'r') as fd:
+    with open(filename(fname), binary and 'rb' or 'r') as fd:
         data = fd.read()
     #self._out.Info("Read file '%s' size %d (%#0x)" %
                    #(fname, len(data), len(data)))
     return data
 
-def WriteFile(fname, data, binary=True):
+def write_file(fname, data, binary=True):
     """Write data into a file.
 
     Args:
@@ -479,10 +479,10 @@ def WriteFile(fname, data, binary=True):
     """
     #self._out.Info("Write file '%s' size %d (%#0x)" %
                    #(fname, len(data), len(data)))
-    with open(Filename(fname), binary and 'wb' or 'w') as fd:
+    with open(filename(fname), binary and 'wb' or 'w') as fd:
         fd.write(data)
 
-def GetBytes(byte, size):
+def get_bytes(byte, size):
     """Get a string of bytes of a given size
 
     Args:
@@ -494,7 +494,7 @@ def GetBytes(byte, size):
     """
     return bytes([byte]) * size
 
-def ToBytes(string):
+def to_bytes(string):
     """Convert a str type into a bytes type
 
     Args:
@@ -505,7 +505,7 @@ def ToBytes(string):
     """
     return string.encode('utf-8')
 
-def ToString(bval):
+def to_string(bval):
     """Convert a bytes type into a str type
 
     Args:
@@ -517,7 +517,7 @@ def ToString(bval):
     """
     return bval.decode('utf-8')
 
-def ToHex(val):
+def to_hex(val):
     """Convert an integer value (or None) to a string
 
     Returns:
@@ -525,7 +525,7 @@ def ToHex(val):
     """
     return 'None' if val is None else '%#x' % val
 
-def ToHexSize(val):
+def to_hex_size(val):
     """Return the size of an object in hex
 
     Returns:
@@ -533,7 +533,7 @@ def ToHexSize(val):
     """
     return 'None' if val is None else '%#x' % len(val)
 
-def PrintFullHelp(fname):
+def print_full_help(fname):
     """Print the full help message for a tool using an appropriate pager.
 
     Args:
@@ -547,7 +547,7 @@ def PrintFullHelp(fname):
         pager = ['more']
     command.Run(*pager, fname)
 
-def Download(url, tmpdir_pattern='.patman'):
+def download(url, tmpdir_pattern='.patman'):
     """Download a file to a temporary directory
 
     Args: