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u-boot/tools/binman/fip_util_test.py

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#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-2.0+
# Copyright 2021 Google LLC
# Written by Simon Glass <sjg@chromium.org>
"""Tests for fip_util
This tests a few features of fip_util which are not covered by binman's ftest.py
"""
import os
import shutil
import sys
import tempfile
import unittest
# Bring in the patman and dtoc libraries (but don't override the first path
# in PYTHONPATH)
OUR_PATH = os.path.dirname(os.path.realpath(__file__))
sys.path.insert(2, os.path.join(OUR_PATH, '..'))
# pylint: disable=C0413
from patman import test_util
from patman import tools
from binman import bintool
from binman import fip_util
FIPTOOL = bintool.Bintool.create('fiptool')
HAVE_FIPTOOL = FIPTOOL.is_present()
# pylint: disable=R0902,R0904
class TestFip(unittest.TestCase):
"""Test of fip_util classes"""
#pylint: disable=W0212
def setUp(self):
# Create a temporary directory for test files
self._indir = tempfile.mkdtemp(prefix='fip_util.')
tools.set_input_dirs([self._indir])
# Set up a temporary output directory, used by the tools library when
# compressing files
tools.prepare_output_dir(None)
self.src_file = os.path.join(self._indir, 'orig.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')
self.macro_fname = os.path.join(self.macro_dir,
'firmware_image_package.h')
self.name_dir = os.path.join(self._indir, 'tools/fiptool')
self.name_fname = os.path.join(self.name_dir, 'tbbr_config.c')
macro_contents = '''
/* ToC Entry UUIDs */
#define UUID_TRUSTED_UPDATE_FIRMWARE_SCP_BL2U \\
{{0x65, 0x92, 0x27, 0x03}, {0x2f, 0x74}, {0xe6, 0x44}, 0x8d, 0xff, {0x57, 0x9a, 0xc1, 0xff, 0x06, 0x10} }
#define UUID_TRUSTED_UPDATE_FIRMWARE_BL2U \\
{{0x60, 0xb3, 0xeb, 0x37}, {0xc1, 0xe5}, {0xea, 0x41}, 0x9d, 0xf3, {0x19, 0xed, 0xa1, 0x1f, 0x68, 0x01} }
'''
name_contents = '''
toc_entry_t toc_entries[] = {
{
.name = "SCP Firmware Updater Configuration FWU SCP_BL2U",
.uuid = UUID_TRUSTED_UPDATE_FIRMWARE_SCP_BL2U,
.cmdline_name = "scp-fwu-cfg"
},
{
.name = "AP Firmware Updater Configuration BL2U",
.uuid = UUID_TRUSTED_UPDATE_FIRMWARE_BL2U,
.cmdline_name = "ap-fwu-cfg"
},
'''
def setup_readme(self):
"""Set up the readme.txt file"""
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.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.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.finalise_output_dir()
def test_no_readme(self):
"""Test handling of a missing readme.rst"""
with self.assertRaises(Exception) as err:
fip_util.main(self.args, self.src_file)
self.assertIn('Expected file', str(err.exception))
def test_invalid_readme(self):
"""Test that an invalid readme.rst is detected"""
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))
def test_no_fip_h(self):
"""Check handling of missing firmware_image_package.h"""
self.setup_readme()
with self.assertRaises(Exception) as err:
fip_util.main(self.args, self.src_file)
self.assertIn('No such file or directory', str(err.exception))
def test_invalid_fip_h(self):
"""Check failure to parse firmware_image_package.h"""
self.setup_readme()
self.setup_macro('blah')
with self.assertRaises(Exception) as err:
fip_util.main(self.args, self.src_file)
self.assertIn('Cannot parse file', str(err.exception))
def test_parse_fip_h(self):
"""Check parsing of firmware_image_package.h"""
self.setup_readme()
# Check parsing the header file
self.setup_macro()
macros = fip_util.parse_macros(self._indir)
expected_macros = {
'UUID_TRUSTED_UPDATE_FIRMWARE_SCP_BL2U':
('ToC Entry UUIDs', 'UUID_TRUSTED_UPDATE_FIRMWARE_SCP_BL2U',
bytes([0x65, 0x92, 0x27, 0x03, 0x2f, 0x74, 0xe6, 0x44,
0x8d, 0xff, 0x57, 0x9a, 0xc1, 0xff, 0x06, 0x10])),
'UUID_TRUSTED_UPDATE_FIRMWARE_BL2U':
('ToC Entry UUIDs', 'UUID_TRUSTED_UPDATE_FIRMWARE_BL2U',
bytes([0x60, 0xb3, 0xeb, 0x37, 0xc1, 0xe5, 0xea, 0x41,
0x9d, 0xf3, 0x19, 0xed, 0xa1, 0x1f, 0x68, 0x01])),
}
self.assertEqual(expected_macros, macros)
def test_missing_tbbr_c(self):
"""Check handlinh of missing tbbr_config.c"""
self.setup_readme()
self.setup_macro()
# Still need the .c file
with self.assertRaises(Exception) as err:
fip_util.main(self.args, self.src_file)
self.assertIn('tbbr_config.c', str(err.exception))
def test_invalid_tbbr_c(self):
"""Check failure to parse tbbr_config.c"""
self.setup_readme()
self.setup_macro()
# Check invalid format for C file
self.setup_name('blah')
with self.assertRaises(Exception) as err:
fip_util.main(self.args, self.src_file)
self.assertIn('Cannot parse file', str(err.exception))
def test_inconsistent_tbbr_c(self):
"""Check tbbr_config.c in a format we don't expect"""
self.setup_readme()
# This is missing a hex value
self.setup_macro('''
/* ToC Entry UUIDs */
#define UUID_TRUSTED_UPDATE_FIRMWARE_SCP_BL2U \\
{{0x65, 0x92, 0x27,}, {0x2f, 0x74}, {0xe6, 0x44}, 0x8d, 0xff, {0x57, 0x9a, 0xc1, 0xff, 0x06, 0x10} }
#define UUID_TRUSTED_UPDATE_FIRMWARE_BL2U \\
{{0x60, 0xb3, 0xeb, 0x37}, {0xc1, 0xe5}, {0xea, 0x41}, 0x9d, 0xf3, {0x19, 0xed, 0xa1, 0x1f, 0x68, 0x01} }
''')
# Check invalid format for C file
self.setup_name('blah')
with self.assertRaises(Exception) as err:
fip_util.main(self.args, self.src_file)
self.assertIn('Cannot parse UUID line 5', str(err.exception))
def test_parse_tbbr_c(self):
"""Check parsing tbbr_config.c"""
self.setup_readme()
self.setup_macro()
self.setup_name()
names = fip_util.parse_names(self._indir)
expected_names = {
'UUID_TRUSTED_UPDATE_FIRMWARE_SCP_BL2U': (
'SCP Firmware Updater Configuration FWU SCP_BL2U',
'UUID_TRUSTED_UPDATE_FIRMWARE_SCP_BL2U',
'scp-fwu-cfg'),
'UUID_TRUSTED_UPDATE_FIRMWARE_BL2U': (
'AP Firmware Updater Configuration BL2U',
'UUID_TRUSTED_UPDATE_FIRMWARE_BL2U',
'ap-fwu-cfg'),
}
self.assertEqual(expected_names, names)
def test_uuid_not_in_tbbr_config_c(self):
"""Check handling a UUID in the header file that's not in the .c file"""
self.setup_readme()
self.setup_macro(self.macro_contents + '''
#define UUID_TRUSTED_OS_FW_KEY_CERT \\
{{0x94, 0x77, 0xd6, 0x03}, {0xfb, 0x60}, {0xe4, 0x11}, 0x85, 0xdd, {0xb7, 0x10, 0x5b, 0x8c, 0xee, 0x04} }
''')
self.setup_name()
macros = fip_util.parse_macros(self._indir)
names = fip_util.parse_names(self._indir)
with test_util.capture_sys_output() as (stdout, _):
fip_util.create_code_output(macros, names)
self.assertIn(
"UUID 'UUID_TRUSTED_OS_FW_KEY_CERT' is not mentioned in tbbr_config.c file",
stdout.getvalue())
def test_changes(self):
"""Check handling of a source file that does/doesn't need changes"""
self.setup_readme()
self.setup_macro()
self.setup_name()
# Check generating the file when changes are needed
tools.write_file(self.src_file, '''
# This is taken from tbbr_config.c in ARM Trusted Firmware
FIP_TYPE_LIST = [
# ToC Entry UUIDs
FipType('scp-fwu-cfg', 'SCP Firmware Updater Configuration FWU SCP_BL2U',
[0x65, 0x92, 0x27, 0x03, 0x2f, 0x74, 0xe6, 0x44,
0x8d, 0xff, 0x57, 0x9a, 0xc1, 0xff, 0x06, 0x10]),
] # end
blah de blah
''', binary=False)
with test_util.capture_sys_output() as (stdout, _):
fip_util.main(self.args, self.src_file)
self.assertIn('Needs update', stdout.getvalue())
# Check generating the file when no changes are needed
tools.write_file(self.src_file, '''
# This is taken from tbbr_config.c in ARM Trusted Firmware
FIP_TYPE_LIST = [
# ToC Entry UUIDs
FipType('scp-fwu-cfg', 'SCP Firmware Updater Configuration FWU SCP_BL2U',
[0x65, 0x92, 0x27, 0x03, 0x2f, 0x74, 0xe6, 0x44,
0x8d, 0xff, 0x57, 0x9a, 0xc1, 0xff, 0x06, 0x10]),
FipType('ap-fwu-cfg', 'AP Firmware Updater Configuration BL2U',
[0x60, 0xb3, 0xeb, 0x37, 0xc1, 0xe5, 0xea, 0x41,
0x9d, 0xf3, 0x19, 0xed, 0xa1, 0x1f, 0x68, 0x01]),
] # end
blah blah''', binary=False)
with test_util.capture_sys_output() as (stdout, _):
fip_util.main(self.args, self.src_file)
self.assertIn('is up-to-date', stdout.getvalue())
def test_no_debug(self):
"""Test running without the -D flag"""
self.setup_readme()
self.setup_macro()
self.setup_name()
args = self.args.copy()
args.remove('-D')
tools.write_file(self.src_file, '', binary=False)
with test_util.capture_sys_output():
fip_util.main(args, self.src_file)
@unittest.skipIf(not HAVE_FIPTOOL, 'No fiptool available')
def test_fiptool_list(self):
"""Create a FIP and check that fiptool can read it"""
fwu = b'my data'
tb_fw = b'some more data'
fip = fip_util.FipWriter(0x123, 0x10)
fip.add_entry('fwu', fwu, 0x456)
fip.add_entry('tb-fw', tb_fw, 0)
fip.add_entry(bytes(range(16)), tb_fw, 0)
data = fip.get_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"
Trusted Boot Firmware BL2: offset=0xC0, size=0xE, cmdline="--tb-fw"
00010203-0405-0607-0809-0A0B0C0D0E0F: offset=0xD0, size=0xE, cmdline="--blob"
''',
result)
fwu_data = b'my data'
tb_fw_data = b'some more data'
other_fw_data = b'even more'
def create_fiptool_image(self):
"""Create an image with fiptool which we can use for testing
Returns:
FipReader: reader for the image
"""
fwu = os.path.join(self._indir, 'fwu')
tools.write_file(fwu, self.fwu_data)
tb_fw = os.path.join(self._indir, 'tb_fw')
tools.write_file(tb_fw, self.tb_fw_data)
other_fw = os.path.join(self._indir, 'other_fw')
tools.write_file(other_fw, self.other_fw_data)
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.read_file(fname))
@unittest.skipIf(not HAVE_FIPTOOL, 'No fiptool available')
def test_fiptool_create(self):
"""Create a FIP with fiptool and check that fip_util can read it"""
reader = self.create_fiptool_image()
header = reader.header
fents = reader.fents
self.assertEqual(0x123 << 32, header.flags)
self.assertEqual(fip_util.HEADER_MAGIC, header.name)
self.assertEqual(fip_util.HEADER_SERIAL, header.serial)
self.assertEqual(3, len(fents))
fent = fents[0]
self.assertEqual(
bytes([0x4f, 0x51, 0x1d, 0x11, 0x2b, 0xe5, 0x4e, 0x49,
0xb4, 0xc5, 0x83, 0xc2, 0xf7, 0x15, 0x84, 0x0a]), fent.uuid)
self.assertEqual(0xb0, fent.offset)
self.assertEqual(len(self.fwu_data), fent.size)
self.assertEqual(0, fent.flags)
self.assertEqual(self.fwu_data, fent.data)
fent = fents[1]
self.assertEqual(
bytes([0x5f, 0xf9, 0xec, 0x0b, 0x4d, 0x22, 0x3e, 0x4d,
0xa5, 0x44, 0xc3, 0x9d, 0x81, 0xc7, 0x3f, 0x0a]), fent.uuid)
self.assertEqual(0xb8, fent.offset)
self.assertEqual(len(self.tb_fw_data), fent.size)
self.assertEqual(0, fent.flags)
self.assertEqual(self.tb_fw_data, fent.data)
fent = fents[2]
self.assertEqual(
bytes([0xe3, 0xb7, 0x8d, 0x9e, 0x4a, 0x64, 0x11, 0xec,
0xb4, 0x5c, 0xfb, 0xa2, 0xb9, 0xb4, 0x97, 0x88]), fent.uuid)
self.assertEqual(0xc8, fent.offset)
self.assertEqual(len(self.other_fw_data), fent.size)
self.assertEqual(0, fent.flags)
self.assertEqual(self.other_fw_data, fent.data)
@unittest.skipIf(not HAVE_FIPTOOL, 'No fiptool available')
def test_reader_get_entry(self):
"""Test get_entry() by name and UUID"""
reader = self.create_fiptool_image()
fents = reader.fents
fent = reader.get_entry('fwu')
self.assertEqual(fent, fents[0])
fent = reader.get_entry(
bytes([0x5f, 0xf9, 0xec, 0x0b, 0x4d, 0x22, 0x3e, 0x4d,
0xa5, 0x44, 0xc3, 0x9d, 0x81, 0xc7, 0x3f, 0x0a]))
self.assertEqual(fent, fents[1])
# Try finding entries that don't exist
with self.assertRaises(Exception) as err:
fent = reader.get_entry('scp-fwu-cfg')
self.assertIn("Cannot find FIP entry 'scp-fwu-cfg'", str(err.exception))
with self.assertRaises(Exception) as err:
fent = reader.get_entry(bytes(list(range(16))))
self.assertIn(
"Cannot find FIP entry '00010203-0405-0607-0809-0a0b0c0d0e0f'",
str(err.exception))
with self.assertRaises(Exception) as err:
fent = reader.get_entry('blah')
self.assertIn("Unknown FIP entry type 'blah'", str(err.exception))
@unittest.skipIf(not HAVE_FIPTOOL, 'No fiptool available')
def test_fiptool_errors(self):
"""Check some error reporting from fiptool"""
with self.assertRaises(Exception) as err:
with test_util.capture_sys_output():
FIPTOOL.create_bad()
self.assertIn("unrecognized option '--fred'", str(err.exception))
if __name__ == '__main__':
unittest.main()
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