tools/dtoc/test_dtoc.py

#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-2.0+
# Copyright (c) 2012 The Chromium OS Authors.
#

"""Tests for the dtb_platdata module

This includes unit tests for some functions and functional tests for the dtoc
tool.
"""

import collections
import glob
import os
import shutil
import struct
import tempfile
import unittest
from unittest import mock

from dtb_platdata import conv_name_to_c
from dtb_platdata import get_compat_name
from dtb_platdata import get_value
from dtb_platdata import tab_to
from dtoc import dtb_platdata
from dtoc import fdt
from dtoc import fdt_util
from patman import test_util
from patman import tools

OUR_PATH = os.path.dirname(os.path.realpath(__file__))


HEADER = '''/*
 * DO NOT MODIFY
 *
 * Defines the structs used to hold devicetree data.
 * This was generated by dtoc from a .dtb (device tree binary) file.
 */

#include <stdbool.h>
#include <linux/libfdt.h>'''

C_HEADER = '''/*
 * DO NOT MODIFY
 *
 * Declares the U_BOOT_DRIVER() records and platform data.
 * This was generated by dtoc from a .dtb (device tree binary) file.
 */

/* Allow use of U_BOOT_DRVINFO() in this file */
#define DT_PLAT_C

#include <common.h>
#include <dm.h>
#include <dt-structs.h>
'''

C_EMPTY_POPULATE_PHANDLE_DATA = '''void dm_populate_phandle_data(void) {
}
'''

# This is a test so is allowed to access private things in the module it is
# testing
# pylint: disable=W0212

def get_dtb_file(dts_fname, capture_stderr=False):
    """Compile a .dts file to a .dtb

    Args:
        dts_fname (str): Filename of .dts file in the current directory
        capture_stderr (bool): True to capture and discard stderr output

    Returns:
        str: Filename of compiled file in output directory
    """
    return fdt_util.EnsureCompiled(os.path.join(OUR_PATH, dts_fname),
                                   capture_stderr=capture_stderr)


class TestDtoc(unittest.TestCase):
    """Tests for dtoc"""
    @classmethod
    def setUpClass(cls):
        tools.PrepareOutputDir(None)
        cls.maxDiff = None

    @classmethod
    def tearDownClass(cls):
        tools.FinaliseOutputDir()

    @staticmethod
    def _write_python_string(fname, data):
        """Write a string with tabs expanded as done in this Python file

        Args:
            fname (str): Filename to write to
            data (str): Raw string to convert
        """
        data = data.replace('\t', '\\t')
        with open(fname, 'w') as fout:
            fout.write(data)

    def _check_strings(self, expected, actual):
        """Check that a string matches its expected value

        If the strings do not match, they are written to the /tmp directory in
        the same Python format as is used here in the test. This allows for
        easy comparison and update of the tests.

        Args:
            expected (str): Expected string
            actual (str): Actual string
        """
        if expected != actual:
            self._write_python_string('/tmp/binman.expected', expected)
            self._write_python_string('/tmp/binman.actual', actual)
            print('Failures written to /tmp/binman.{expected,actual}')
        self.assertEqual(expected, actual)

    @staticmethod
    def run_test(args, dtb_file, output):
        """Run a test using dtoc

        Args:
            args (list of str): List of arguments for dtoc
            dtb_file (str): Filename of .dtb file
            output (str): Filename of output file
        """
        dtb_platdata.run_steps(args, dtb_file, False, output, [], True)

    def test_name(self):
        """Test conversion of device tree names to C identifiers"""
        self.assertEqual('serial_at_0x12', conv_name_to_c('serial@0x12'))
        self.assertEqual('vendor_clock_frequency',
                         conv_name_to_c('vendor,clock-frequency'))
        self.assertEqual('rockchip_rk3399_sdhci_5_1',
                         conv_name_to_c('rockchip,rk3399-sdhci-5.1'))

    def test_tab_to(self):
        """Test operation of tab_to() function"""
        self.assertEqual('fred ', tab_to(0, 'fred'))
        self.assertEqual('fred\t', tab_to(1, 'fred'))
        self.assertEqual('fred was here ', tab_to(1, 'fred was here'))
        self.assertEqual('fred was here\t\t', tab_to(3, 'fred was here'))
        self.assertEqual('exactly8 ', tab_to(1, 'exactly8'))
        self.assertEqual('exactly8\t', tab_to(2, 'exactly8'))

    def test_get_value(self):
        """Test operation of get_value() function"""
        self.assertEqual('0x45',
                         get_value(fdt.Type.INT, struct.pack('>I', 0x45)))
        self.assertEqual('0x45',
                         get_value(fdt.Type.BYTE, struct.pack('<I', 0x45)))
        self.assertEqual('0x0',
                         get_value(fdt.Type.BYTE, struct.pack('>I', 0x45)))
        self.assertEqual('"test"', get_value(fdt.Type.STRING, 'test'))
        self.assertEqual('true', get_value(fdt.Type.BOOL, None))

    def test_get_compat_name(self):
        """Test operation of get_compat_name() function"""
        Prop = collections.namedtuple('Prop', ['value'])
        Node = collections.namedtuple('Node', ['props'])

        prop = Prop(['rockchip,rk3399-sdhci-5.1', 'arasan,sdhci-5.1'])
        node = Node({'compatible': prop})
        self.assertEqual((['rockchip_rk3399_sdhci_5_1', 'arasan_sdhci_5_1']),
                         get_compat_name(node))

        prop = Prop(['rockchip,rk3399-sdhci-5.1'])
        node = Node({'compatible': prop})
        self.assertEqual((['rockchip_rk3399_sdhci_5_1']),
                         get_compat_name(node))

        prop = Prop(['rockchip,rk3399-sdhci-5.1', 'arasan,sdhci-5.1', 'third'])
        node = Node({'compatible': prop})
        self.assertEqual((['rockchip_rk3399_sdhci_5_1',
                           'arasan_sdhci_5_1', 'third']),
                         get_compat_name(node))

    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')
        self.run_test(['struct'], dtb_file, output)
        with open(output) as infile:
            lines = infile.read().splitlines()
        self.assertEqual(HEADER.splitlines(), lines)

        self.run_test(['platdata'], dtb_file, output)
        with open(output) as infile:
            lines = infile.read().splitlines()
        self.assertEqual(C_HEADER.splitlines() + [''] +
                         C_EMPTY_POPULATE_PHANDLE_DATA.splitlines(), lines)

    struct_text = HEADER + '''
struct dtd_sandbox_i2c_test {
};
struct dtd_sandbox_pmic_test {
\tbool\t\tlow_power;
\tfdt64_t\t\treg[2];
};
struct dtd_sandbox_spl_test {
\tconst char *	acpi_name;
\tbool\t\tboolval;
\tunsigned char\tbytearray[3];
\tunsigned char\tbyteval;
\tfdt32_t\t\tintarray[4];
\tfdt32_t\t\tintval;
\tunsigned char\tlongbytearray[9];
\tunsigned char\tnotstring[5];
\tconst char *\tstringarray[3];
\tconst char *\tstringval;
};
'''

    platdata_text = C_HEADER + '''
/* Node /i2c@0 index 0 */
static struct dtd_sandbox_i2c_test dtv_i2c_at_0 = {
};
U_BOOT_DRVINFO(i2c_at_0) = {
\t.name\t\t= "sandbox_i2c_test",
\t.plat\t= &dtv_i2c_at_0,
\t.plat_size\t= sizeof(dtv_i2c_at_0),
\t.parent_idx\t= -1,
};

/* Node /i2c@0/pmic@9 index 1 */
static struct dtd_sandbox_pmic_test dtv_pmic_at_9 = {
\t.low_power\t\t= true,
\t.reg\t\t\t= {0x9, 0x0},
};
U_BOOT_DRVINFO(pmic_at_9) = {
\t.name\t\t= "sandbox_pmic_test",
\t.plat\t= &dtv_pmic_at_9,
\t.plat_size\t= sizeof(dtv_pmic_at_9),
\t.parent_idx\t= 0,
};

/* Node /spl-test index 2 */
static struct dtd_sandbox_spl_test dtv_spl_test = {
\t.boolval\t\t= true,
\t.bytearray\t\t= {0x6, 0x0, 0x0},
\t.byteval\t\t= 0x5,
\t.intarray\t\t= {0x2, 0x3, 0x4, 0x0},
\t.intval\t\t\t= 0x1,
\t.longbytearray\t\t= {0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf, 0x10,
\t\t0x11},
\t.notstring\t\t= {0x20, 0x21, 0x22, 0x10, 0x0},
\t.stringarray\t\t= {"multi-word", "message", ""},
\t.stringval\t\t= "message",
};
U_BOOT_DRVINFO(spl_test) = {
\t.name\t\t= "sandbox_spl_test",
\t.plat\t= &dtv_spl_test,
\t.plat_size\t= sizeof(dtv_spl_test),
\t.parent_idx\t= -1,
};

/* Node /spl-test2 index 3 */
static struct dtd_sandbox_spl_test dtv_spl_test2 = {
\t.acpi_name\t\t= "\\\\_SB.GPO0",
\t.bytearray\t\t= {0x1, 0x23, 0x34},
\t.byteval\t\t= 0x8,
\t.intarray\t\t= {0x5, 0x0, 0x0, 0x0},
\t.intval\t\t\t= 0x3,
\t.longbytearray\t\t= {0x9, 0xa, 0xb, 0xc, 0x0, 0x0, 0x0, 0x0,
\t\t0x0},
\t.stringarray\t\t= {"another", "multi-word", "message"},
\t.stringval\t\t= "message2",
};
U_BOOT_DRVINFO(spl_test2) = {
\t.name\t\t= "sandbox_spl_test",
\t.plat\t= &dtv_spl_test2,
\t.plat_size\t= sizeof(dtv_spl_test2),
\t.parent_idx\t= -1,
};

/* Node /spl-test3 index 4 */
static struct dtd_sandbox_spl_test dtv_spl_test3 = {
\t.longbytearray\t\t= {0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf, 0x10,
\t\t0x0},
\t.stringarray\t\t= {"one", "", ""},
};
U_BOOT_DRVINFO(spl_test3) = {
\t.name\t\t= "sandbox_spl_test",
\t.plat\t= &dtv_spl_test3,
\t.plat_size\t= sizeof(dtv_spl_test3),
\t.parent_idx\t= -1,
};

''' + C_EMPTY_POPULATE_PHANDLE_DATA

    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')
        self.run_test(['struct'], dtb_file, output)
        with open(output) as infile:
            data = infile.read()

        self._check_strings(self.struct_text, data)

        self.run_test(['platdata'], dtb_file, output)
        with open(output) as infile:
            data = infile.read()

        self._check_strings(self.platdata_text, data)

        # Try the 'all' command
        self.run_test(['all'], dtb_file, output)
        data = tools.ReadFile(output, binary=False)
        self._check_strings(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')
        self.run_test(['struct'], dtb_file, output)
        with open(output) as infile:
            data = infile.read()
        self._check_strings(HEADER + '''
struct dtd_sandbox_gpio {
\tconst char *\tgpio_bank_name;
\tbool\t\tgpio_controller;
\tfdt32_t\t\tsandbox_gpio_count;
};
''', data)

        self.run_test(['platdata'], dtb_file, output)
        with open(output) as infile:
            data = infile.read()
        self._check_strings(C_HEADER + '''
/* Node /gpios@0 index 0 */
static struct dtd_sandbox_gpio dtv_gpios_at_0 = {
\t.gpio_bank_name\t\t= "a",
\t.gpio_controller\t= true,
\t.sandbox_gpio_count\t= 0x14,
};
U_BOOT_DRVINFO(gpios_at_0) = {
\t.name\t\t= "sandbox_gpio",
\t.plat\t= &dtv_gpios_at_0,
\t.plat_size\t= sizeof(dtv_gpios_at_0),
\t.parent_idx\t= -1,
};

void dm_populate_phandle_data(void) {
}
''', data)

    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')
        with test_util.capture_sys_output() as _:
            dtb_platdata.run_steps(['struct'], dtb_file, False, output, [])
        with open(output) as infile:
            data = infile.read()
        self._check_strings(HEADER + '''
struct dtd_invalid {
};
''', data)

        with test_util.capture_sys_output() as _:
            dtb_platdata.run_steps(['platdata'], dtb_file, False, output, [])
        with open(output) as infile:
            data = infile.read()
        self._check_strings(C_HEADER + '''
/* Node /spl-test index 0 */
static struct dtd_invalid dtv_spl_test = {
};
U_BOOT_DRVINFO(spl_test) = {
\t.name\t\t= "invalid",
\t.plat\t= &dtv_spl_test,
\t.plat_size\t= sizeof(dtv_spl_test),
\t.parent_idx\t= -1,
};

void dm_populate_phandle_data(void) {
}
''', data)

    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')
        self.run_test(['struct'], dtb_file, output)
        with open(output) as infile:
            data = infile.read()
        self._check_strings(HEADER + '''
struct dtd_source {
\tstruct phandle_2_arg clocks[4];
};
struct dtd_target {
\tfdt32_t\t\tintval;
};
''', data)

        self.run_test(['platdata'], dtb_file, output)
        with open(output) as infile:
            data = infile.read()
        self._check_strings(C_HEADER + '''
/* Node /phandle2-target index 0 */
static struct dtd_target dtv_phandle2_target = {
\t.intval\t\t\t= 0x1,
};
U_BOOT_DRVINFO(phandle2_target) = {
\t.name\t\t= "target",
\t.plat\t= &dtv_phandle2_target,
\t.plat_size\t= sizeof(dtv_phandle2_target),
\t.parent_idx\t= -1,
};

/* Node /phandle3-target index 1 */
static struct dtd_target dtv_phandle3_target = {
\t.intval\t\t\t= 0x2,
};
U_BOOT_DRVINFO(phandle3_target) = {
\t.name\t\t= "target",
\t.plat\t= &dtv_phandle3_target,
\t.plat_size\t= sizeof(dtv_phandle3_target),
\t.parent_idx\t= -1,
};

/* Node /phandle-target index 4 */
static struct dtd_target dtv_phandle_target = {
\t.intval\t\t\t= 0x0,
};
U_BOOT_DRVINFO(phandle_target) = {
\t.name\t\t= "target",
\t.plat\t= &dtv_phandle_target,
\t.plat_size\t= sizeof(dtv_phandle_target),
\t.parent_idx\t= -1,
};

/* Node /phandle-source index 2 */
static struct dtd_source dtv_phandle_source = {
\t.clocks\t\t\t= {
\t\t\t{4, {}},
\t\t\t{0, {11}},
\t\t\t{1, {12, 13}},
\t\t\t{4, {}},},
};
U_BOOT_DRVINFO(phandle_source) = {
\t.name\t\t= "source",
\t.plat\t= &dtv_phandle_source,
\t.plat_size\t= sizeof(dtv_phandle_source),
\t.parent_idx\t= -1,
};

/* Node /phandle-source2 index 3 */
static struct dtd_source dtv_phandle_source2 = {
\t.clocks\t\t\t= {
\t\t\t{4, {}},},
};
U_BOOT_DRVINFO(phandle_source2) = {
\t.name\t\t= "source",
\t.plat\t= &dtv_phandle_source2,
\t.plat_size\t= sizeof(dtv_phandle_source2),
\t.parent_idx\t= -1,
};

void dm_populate_phandle_data(void) {
}
''', data)

    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')
        self.run_test(['struct'], dtb_file, output)
        with open(output) as infile:
            data = infile.read()
        self._check_strings(HEADER + '''
struct dtd_source {
\tstruct phandle_0_arg clocks[1];
};
struct dtd_target {
\tfdt32_t\t\tintval;
};
''', data)

    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')
        self.run_test(['platdata'], dtb_file, output)
        with open(output) as infile:
            data = infile.read()
        self._check_strings(C_HEADER + '''
/* Node /phandle-target index 1 */
static struct dtd_target dtv_phandle_target = {
};
U_BOOT_DRVINFO(phandle_target) = {
\t.name\t\t= "target",
\t.plat\t= &dtv_phandle_target,
\t.plat_size\t= sizeof(dtv_phandle_target),
\t.parent_idx\t= -1,
};

/* Node /phandle-source2 index 0 */
static struct dtd_source dtv_phandle_source2 = {
\t.clocks\t\t\t= {
\t\t\t{1, {}},},
};
U_BOOT_DRVINFO(phandle_source2) = {
\t.name\t\t= "source",
\t.plat\t= &dtv_phandle_source2,
\t.plat_size\t= sizeof(dtv_phandle_source2),
\t.parent_idx\t= -1,
};

void dm_populate_phandle_data(void) {
}
''', data)

    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')
        dtb_platdata.run_steps(['platdata'], dtb_file, False, output, [], True)
        with open(output) as infile:
            data = infile.read()
        self._check_strings(C_HEADER + '''
/* Node /phandle2-target index 0 */
static struct dtd_target dtv_phandle2_target = {
\t.intval\t\t\t= 0x1,
};
U_BOOT_DRVINFO(phandle2_target) = {
\t.name\t\t= "target",
\t.plat\t= &dtv_phandle2_target,
\t.plat_size\t= sizeof(dtv_phandle2_target),
\t.parent_idx\t= -1,
};

/* Node /phandle3-target index 1 */
static struct dtd_target dtv_phandle3_target = {
\t.intval\t\t\t= 0x2,
};
U_BOOT_DRVINFO(phandle3_target) = {
\t.name\t\t= "target",
\t.plat\t= &dtv_phandle3_target,
\t.plat_size\t= sizeof(dtv_phandle3_target),
\t.parent_idx\t= -1,
};

/* Node /phandle-target index 4 */
static struct dtd_target dtv_phandle_target = {
\t.intval\t\t\t= 0x0,
};
U_BOOT_DRVINFO(phandle_target) = {
\t.name\t\t= "target",
\t.plat\t= &dtv_phandle_target,
\t.plat_size\t= sizeof(dtv_phandle_target),
\t.parent_idx\t= -1,
};

/* Node /phandle-source index 2 */
static struct dtd_source dtv_phandle_source = {
\t.cd_gpios\t\t= {
\t\t\t{4, {}},
\t\t\t{0, {11}},
\t\t\t{1, {12, 13}},
\t\t\t{4, {}},},
};
U_BOOT_DRVINFO(phandle_source) = {
\t.name\t\t= "source",
\t.plat\t= &dtv_phandle_source,
\t.plat_size\t= sizeof(dtv_phandle_source),
\t.parent_idx\t= -1,
};

/* Node /phandle-source2 index 3 */
static struct dtd_source dtv_phandle_source2 = {
\t.cd_gpios\t\t= {
\t\t\t{4, {}},},
};
U_BOOT_DRVINFO(phandle_source2) = {
\t.name\t\t= "source",
\t.plat\t= &dtv_phandle_source2,
\t.plat_size\t= sizeof(dtv_phandle_source2),
\t.parent_idx\t= -1,
};

void dm_populate_phandle_data(void) {
}
''', data)

    def test_phandle_bad(self):
        """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')
        with self.assertRaises(ValueError) as exc:
            self.run_test(['struct'], dtb_file, output)
        self.assertIn("Cannot parse 'clocks' in node 'phandle-source'",
                      str(exc.exception))

    def test_phandle_bad2(self):
        """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')
        with self.assertRaises(ValueError) as exc:
            self.run_test(['struct'], dtb_file, output)
        self.assertIn("Node 'phandle-target' has no cells property",
                      str(exc.exception))

    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')
        self.run_test(['struct'], dtb_file, output)
        with open(output) as infile:
            data = infile.read()
        self._check_strings(HEADER + '''
struct dtd_test1 {
\tfdt64_t\t\treg[2];
};
struct dtd_test2 {
\tfdt64_t\t\treg[2];
};
struct dtd_test3 {
\tfdt64_t\t\treg[4];
};
''', data)

        self.run_test(['platdata'], dtb_file, output)
        with open(output) as infile:
            data = infile.read()
        self._check_strings(C_HEADER + '''
/* Node /test1 index 0 */
static struct dtd_test1 dtv_test1 = {
\t.reg\t\t\t= {0x1234, 0x5678},
};
U_BOOT_DRVINFO(test1) = {
\t.name\t\t= "test1",
\t.plat\t= &dtv_test1,
\t.plat_size\t= sizeof(dtv_test1),
\t.parent_idx\t= -1,
};

/* Node /test2 index 1 */
static struct dtd_test2 dtv_test2 = {
\t.reg\t\t\t= {0x1234567890123456, 0x9876543210987654},
};
U_BOOT_DRVINFO(test2) = {
\t.name\t\t= "test2",
\t.plat\t= &dtv_test2,
\t.plat_size\t= sizeof(dtv_test2),
\t.parent_idx\t= -1,
};

/* Node /test3 index 2 */
static struct dtd_test3 dtv_test3 = {
\t.reg\t\t\t= {0x1234567890123456, 0x9876543210987654, 0x2, 0x3},
};
U_BOOT_DRVINFO(test3) = {
\t.name\t\t= "test3",
\t.plat\t= &dtv_test3,
\t.plat_size\t= sizeof(dtv_test3),
\t.parent_idx\t= -1,
};

''' + C_EMPTY_POPULATE_PHANDLE_DATA, data)

    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')
        self.run_test(['struct'], dtb_file, output)
        with open(output) as infile:
            data = infile.read()
        self._check_strings(HEADER + '''
struct dtd_test1 {
\tfdt32_t\t\treg[2];
};
struct dtd_test2 {
\tfdt32_t\t\treg[4];
};
''', data)

        self.run_test(['platdata'], dtb_file, output)
        with open(output) as infile:
            data = infile.read()
        self._check_strings(C_HEADER + '''
/* Node /test1 index 0 */
static struct dtd_test1 dtv_test1 = {
\t.reg\t\t\t= {0x1234, 0x5678},
};
U_BOOT_DRVINFO(test1) = {
\t.name\t\t= "test1",
\t.plat\t= &dtv_test1,
\t.plat_size\t= sizeof(dtv_test1),
\t.parent_idx\t= -1,
};

/* Node /test2 index 1 */
static struct dtd_test2 dtv_test2 = {
\t.reg\t\t\t= {0x12345678, 0x98765432, 0x2, 0x3},
};
U_BOOT_DRVINFO(test2) = {
\t.name\t\t= "test2",
\t.plat\t= &dtv_test2,
\t.plat_size\t= sizeof(dtv_test2),
\t.parent_idx\t= -1,
};

''' + C_EMPTY_POPULATE_PHANDLE_DATA, data)

    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')
        self.run_test(['struct'], dtb_file, output)
        with open(output) as infile:
            data = infile.read()
        self._check_strings(HEADER + '''
struct dtd_test1 {
\tfdt64_t\t\treg[2];
};
struct dtd_test2 {
\tfdt64_t\t\treg[2];
};
struct dtd_test3 {
\tfdt64_t\t\treg[4];
};
''', data)

        self.run_test(['platdata'], dtb_file, output)
        with open(output) as infile:
            data = infile.read()
        self._check_strings(C_HEADER + '''
/* Node /test1 index 0 */
static struct dtd_test1 dtv_test1 = {
\t.reg\t\t\t= {0x123400000000, 0x5678},
};
U_BOOT_DRVINFO(test1) = {
\t.name\t\t= "test1",
\t.plat\t= &dtv_test1,
\t.plat_size\t= sizeof(dtv_test1),
\t.parent_idx\t= -1,
};

/* Node /test2 index 1 */
static struct dtd_test2 dtv_test2 = {
\t.reg\t\t\t= {0x1234567890123456, 0x98765432},
};
U_BOOT_DRVINFO(test2) = {
\t.name\t\t= "test2",
\t.plat\t= &dtv_test2,
\t.plat_size\t= sizeof(dtv_test2),
\t.parent_idx\t= -1,
};

/* Node /test3 index 2 */
static struct dtd_test3 dtv_test3 = {
\t.reg\t\t\t= {0x1234567890123456, 0x98765432, 0x2, 0x3},
};
U_BOOT_DRVINFO(test3) = {
\t.name\t\t= "test3",
\t.plat\t= &dtv_test3,
\t.plat_size\t= sizeof(dtv_test3),
\t.parent_idx\t= -1,
};

''' + C_EMPTY_POPULATE_PHANDLE_DATA, data)

    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')
        self.run_test(['struct'], dtb_file, output)
        with open(output) as infile:
            data = infile.read()
        self._check_strings(HEADER + '''
struct dtd_test1 {
\tfdt64_t\t\treg[2];
};
struct dtd_test2 {
\tfdt64_t\t\treg[2];
};
struct dtd_test3 {
\tfdt64_t\t\treg[4];
};
''', data)

        self.run_test(['platdata'], dtb_file, output)
        with open(output) as infile:
            data = infile.read()
        self._check_strings(C_HEADER + '''
/* Node /test1 index 0 */
static struct dtd_test1 dtv_test1 = {
\t.reg\t\t\t= {0x1234, 0x567800000000},
};
U_BOOT_DRVINFO(test1) = {
\t.name\t\t= "test1",
\t.plat\t= &dtv_test1,
\t.plat_size\t= sizeof(dtv_test1),
\t.parent_idx\t= -1,
};

/* Node /test2 index 1 */
static struct dtd_test2 dtv_test2 = {
\t.reg\t\t\t= {0x12345678, 0x9876543210987654},
};
U_BOOT_DRVINFO(test2) = {
\t.name\t\t= "test2",
\t.plat\t= &dtv_test2,
\t.plat_size\t= sizeof(dtv_test2),
\t.parent_idx\t= -1,
};

/* Node /test3 index 2 */
static struct dtd_test3 dtv_test3 = {
\t.reg\t\t\t= {0x12345678, 0x9876543210987654, 0x2, 0x3},
};
U_BOOT_DRVINFO(test3) = {
\t.name\t\t= "test3",
\t.plat\t= &dtv_test3,
\t.plat_size\t= sizeof(dtv_test3),
\t.parent_idx\t= -1,
};

''' + C_EMPTY_POPULATE_PHANDLE_DATA, data)

    def test_bad_reg(self):
        """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')
        with self.assertRaises(ValueError) as exc:
            self.run_test(['struct'], dtb_file, output)
        self.assertIn("Node 'spl-test' reg property is not an int",
                      str(exc.exception))

    def test_bad_reg2(self):
        """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')
        with self.assertRaises(ValueError) as exc:
            self.run_test(['struct'], dtb_file, output)
        self.assertIn(
            "Node 'spl-test' reg property has 3 cells which is not a multiple of na + ns = 1 + 1)",
            str(exc.exception))

    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')
        self.run_test(['struct'], dtb_file, output)
        with open(output) as infile:
            data = infile.read()
        self._check_strings(HEADER + '''
struct dtd_sandbox_spl_test {
\tfdt32_t\t\tintarray;
\tfdt32_t\t\tintval;
};
''', data)

        self.run_test(['platdata'], dtb_file, output)
        with open(output) as infile:
            data = infile.read()
        self._check_strings(C_HEADER + '''
/* Node /spl-test index 0 */
static struct dtd_sandbox_spl_test dtv_spl_test = {
\t.intval\t\t\t= 0x1,
};
U_BOOT_DRVINFO(spl_test) = {
\t.name\t\t= "sandbox_spl_test",
\t.plat\t= &dtv_spl_test,
\t.plat_size\t= sizeof(dtv_spl_test),
\t.parent_idx\t= -1,
};

/* Node /spl-test2 index 1 */
static struct dtd_sandbox_spl_test dtv_spl_test2 = {
\t.intarray\t\t= 0x5,
};
U_BOOT_DRVINFO(spl_test2) = {
\t.name\t\t= "sandbox_spl_test",
\t.plat\t= &dtv_spl_test2,
\t.plat_size\t= sizeof(dtv_spl_test2),
\t.parent_idx\t= -1,
};

''' + C_EMPTY_POPULATE_PHANDLE_DATA, data)

    def test_stdout(self):
        """Test output to stdout"""
        dtb_file = get_dtb_file('dtoc_test_simple.dts')
        with test_util.capture_sys_output() as (stdout, _):
            self.run_test(['struct'], dtb_file, None)
        self._check_strings(self.struct_text, stdout.getvalue())

    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')
        self.run_test(['all'], dtb_file, output)
        data = tools.ReadFile(output, binary=False)
        self._check_strings(self.platdata_text + self.struct_text, data)

    def test_no_command(self):
        """Test running dtoc without a command"""
        with self.assertRaises(ValueError) as exc:
            self.run_test([], '', '')
        self.assertIn("Please specify a command: struct, platdata",
                      str(exc.exception))

    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')
        with self.assertRaises(ValueError) as exc:
            self.run_test(['invalid-cmd'], dtb_file, output)
        self.assertIn("Unknown command 'invalid-cmd': (use: platdata, struct)",
                      str(exc.exception))

    @staticmethod
    def test_scan_drivers():
        """Test running dtoc with additional drivers to scan"""
        dtb_file = get_dtb_file('dtoc_test_simple.dts')
        output = tools.GetOutputFilename('output')
        with test_util.capture_sys_output() as _:
            dtb_platdata.run_steps(
                ['struct'], dtb_file, False, output, [], True,
                [None, '', 'tools/dtoc/dtoc_test_scan_drivers.cxx'])

    @staticmethod
    def test_unicode_error():
        """Test running dtoc with an invalid unicode file

        To be able to perform this test without adding a weird text file which
        would produce issues when using checkpatch.pl or patman, generate the
        file at runtime and then process it.
        """
        dtb_file = get_dtb_file('dtoc_test_simple.dts')
        output = tools.GetOutputFilename('output')
        driver_fn = '/tmp/' + next(tempfile._get_candidate_names())
        with open(driver_fn, 'wb+') as fout:
            fout.write(b'\x81')

        with test_util.capture_sys_output() as _:
            dtb_platdata.run_steps(['struct'], dtb_file, False, output, [],
                                   True, [driver_fn])

    def test_driver(self):
        """Test the Driver class"""
        drv1 = dtb_platdata.Driver('fred')
        drv2 = dtb_platdata.Driver('mary')
        drv3 = dtb_platdata.Driver('fred')
        self.assertEqual("Driver(name='fred')", str(drv1))
        self.assertEqual(drv1, drv3)
        self.assertNotEqual(drv1, drv2)
        self.assertNotEqual(drv2, drv3)

    def test_output_conflict(self):
        """Test a conflict between and output dirs and output file"""
        with self.assertRaises(ValueError) as exc:
            dtb_platdata.run_steps(['all'], None, False, 'out', ['cdir'], True)
        self.assertIn("Must specify either output or output_dirs, not both",
                      str(exc.exception))

    def test_output_dirs(self):
        """Test outputting files to a directory"""
        # Remove the directory so that files from other tests are not there
        tools._RemoveOutputDir()
        tools.PrepareOutputDir(None)

        # This should create the .dts and .dtb in the output directory
        dtb_file = get_dtb_file('dtoc_test_simple.dts')
        outdir = tools.GetOutputDir()
        fnames = glob.glob(outdir + '/*')
        self.assertEqual(2, len(fnames))

        dtb_platdata.run_steps(['all'], dtb_file, False, None, [outdir], True)
        fnames = glob.glob(outdir + '/*')
        self.assertEqual(4, len(fnames))

        leafs = set(os.path.basename(fname) for fname in fnames)
        self.assertEqual(
            {'dt-structs-gen.h', 'source.dts', 'dt-plat.c', 'source.dtb'},
            leafs)

    def test_scan_dirs(self):
        """Test scanning of source directories"""
        def add_file(fname):
            pathname = os.path.join(indir, fname)
            dirname = os.path.dirname(pathname)
            os.makedirs(dirname, exist_ok=True)
            tools.WriteFile(pathname, '', binary=False)
            fname_list.append(pathname)

        try:
            outdir = tools.GetOutputDir()
            indir = tempfile.mkdtemp(prefix='dtoc.')
            dtb_file = get_dtb_file('dtoc_test_simple.dts')

            fname_list = []
            add_file('fname.c')
            add_file('dir/fname2.c')

            # Mock out scan_driver and check that it is called with the
            # expected files
            with mock.patch.object(dtb_platdata.DtbPlatdata, "scan_driver") \
                    as mocked:
                dtb_platdata.run_steps(['all'], dtb_file, False, None, [outdir],
                                       True, basedir=indir)
            self.assertEqual(2, len(mocked.mock_calls))
            self.assertEqual(mock.call(fname_list[0]),
                             mocked.mock_calls[0])
            self.assertEqual(mock.call(fname_list[1]),
                             mocked.mock_calls[1])
        finally:
            shutil.rmtree(indir)