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# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
# Test U-Boot's "mmc read" command. The test reads data from the eMMC or SD
# card, and validates the no errors occurred, and that the expected data was
# read if the test configuration contains a CRC of the expected data.
import pytest
import time
import u_boot_utils
"""
This test relies on boardenv_* to containing configuration values to define
which MMC devices should be tested. For example:
# Configuration data for test_mmc_dev, test_mmc_rescan, test_mmc_info; defines
# whole MMC devices that mmc dev/rescan/info commands may operate upon.
env__mmc_dev_configs = (
{
'fixture_id': 'emmc-boot0',
'is_emmc': True,
'devid': 0,
'partid': 1,
'info_device': ???,
'info_speed': ???,
'info_mode': ???,
'info_buswidth': ???.
},
{
'fixture_id': 'emmc-boot1',
'is_emmc': True,
'devid': 0,
'partid': 2,
'info_device': ???,
'info_speed': ???,
'info_mode': ???,
'info_buswidth': ???.
},
{
'fixture_id': 'emmc-data',
'is_emmc': True,
'devid': 0,
'partid': 0,
'info_device': ???,
'info_speed': ???,
'info_mode': ???,
'info_buswidth': ???.
},
{
'fixture_id': 'sd',
'is_emmc': False,
'devid': 1,
'partid': None,
'info_device': ???,
'info_speed': ???,
'info_mode': ???,
'info_buswidth': ???.
},
)
# Configuration data for test_mmc_rd; defines regions of the MMC (entire
# devices, or ranges of sectors) which can be read:
env__mmc_rd_configs = (
{
'fixture_id': 'emmc-boot0',
'is_emmc': True,
'devid': 0,
'partid': 1,
'sector': 0x10,
'count': 1,
},
{
'fixture_id': 'emmc-boot1',
'is_emmc': True,
'devid': 0,
'partid': 2,
'sector': 0x10,
'count': 1,
},
{
'fixture_id': 'emmc-data',
'is_emmc': True,
'devid': 0,
'partid': 0,
'sector': 0x10,
'count': 0x1000,
},
{
'fixture_id': 'sd-mbr',
'is_emmc': False,
'devid': 1,
'partid': None,
'sector': 0,
'count': 1,
'crc32': '8f6ecf0d',
},
{
'fixture_id': 'sd-large',
'is_emmc': False,
'devid': 1,
'partid': None,
'sector': 0x10,
'count': 0x1000,
},
)
"""
def mmc_dev(u_boot_console, is_emmc, devid, partid):
"""Run the "mmc dev" command.
Args:
u_boot_console: A U-Boot console connection.
is_emmc: Whether the device is eMMC
devid: Device ID
partid: Partition ID
Returns:
Nothing.
"""
# Select MMC device
cmd = 'mmc dev %d' % devid
if is_emmc:
cmd += ' %d' % partid
response = u_boot_console.run_command(cmd)
assert 'no card present' not in response
if is_emmc:
partid_response = '(part %d)' % partid
else:
partid_response = ''
good_response = 'mmc%d%s is current device' % (devid, partid_response)
assert good_response in response
@pytest.mark.buildconfigspec('cmd_mmc')
def test_mmc_dev(u_boot_console, env__mmc_dev_config):
"""Test the "mmc dev" command.
Args:
u_boot_console: A U-Boot console connection.
env__mmc_dev_config: The single MMC configuration on which
to run the test. See the file-level comment above for details
of the format.
Returns:
Nothing.
"""
is_emmc = env__mmc_dev_config['is_emmc']
devid = env__mmc_dev_config['devid']
partid = env__mmc_dev_config.get('partid', 0)
# Select MMC device
mmc_dev(u_boot_console, is_emmc, devid, partid)
@pytest.mark.buildconfigspec('cmd_mmc')
def test_mmc_rescan(u_boot_console, env__mmc_dev_config):
"""Test the "mmc rescan" command.
Args:
u_boot_console: A U-Boot console connection.
env__mmc_dev_config: The single MMC configuration on which
to run the test. See the file-level comment above for details
of the format.
Returns:
Nothing.
"""
is_emmc = env__mmc_dev_config['is_emmc']
devid = env__mmc_dev_config['devid']
partid = env__mmc_dev_config.get('partid', 0)
# Select MMC device
mmc_dev(u_boot_console, is_emmc, devid, partid)
# Rescan MMC device
cmd = 'mmc rescan'
response = u_boot_console.run_command(cmd)
assert 'no card present' not in response
@pytest.mark.buildconfigspec('cmd_mmc')
def test_mmc_info(u_boot_console, env__mmc_dev_config):
"""Test the "mmc info" command.
Args:
u_boot_console: A U-Boot console connection.
env__mmc_dev_config: The single MMC configuration on which
to run the test. See the file-level comment above for details
of the format.
Returns:
Nothing.
"""
is_emmc = env__mmc_dev_config['is_emmc']
devid = env__mmc_dev_config['devid']
partid = env__mmc_dev_config.get('partid', 0)
info_device = env__mmc_dev_config['info_device']
info_speed = env__mmc_dev_config['info_speed']
info_mode = env__mmc_dev_config['info_mode']
info_buswidth = env__mmc_dev_config['info_buswidth']
# Select MMC device
mmc_dev(u_boot_console, is_emmc, devid, partid)
# Read MMC device information
cmd = 'mmc info'
response = u_boot_console.run_command(cmd)
good_response = "Device: %s" % info_device
assert good_response in response
good_response = "Bus Speed: %s" % info_speed
assert good_response in response
good_response = "Mode: %s" % info_mode
assert good_response in response
good_response = "Bus Width: %s" % info_buswidth
assert good_response in response
@pytest.mark.buildconfigspec('cmd_mmc')
def test_mmc_rd(u_boot_console, env__mmc_rd_config):
"""Test the "mmc read" command.
Args:
u_boot_console: A U-Boot console connection.
env__mmc_rd_config: The single MMC configuration on which
to run the test. See the file-level comment above for details
of the format.
Returns:
Nothing.
"""
is_emmc = env__mmc_rd_config['is_emmc']
devid = env__mmc_rd_config['devid']
partid = env__mmc_rd_config.get('partid', 0)
sector = env__mmc_rd_config.get('sector', 0)
count_sectors = env__mmc_rd_config.get('count', 1)
expected_crc32 = env__mmc_rd_config.get('crc32', None)
read_duration_max = env__mmc_rd_config.get('read_duration_max', 0)
count_bytes = count_sectors * 512
bcfg = u_boot_console.config.buildconfig
has_cmd_memory = bcfg.get('config_cmd_memory', 'n') == 'y'
has_cmd_crc32 = bcfg.get('config_cmd_crc32', 'n') == 'y'
ram_base = u_boot_utils.find_ram_base(u_boot_console)
addr = '0x%08x' % ram_base
# Select MMC device
mmc_dev(u_boot_console, is_emmc, devid, partid)
# Clear target RAM
if expected_crc32:
if has_cmd_memory and has_cmd_crc32:
cmd = 'mw.b %s 0 0x%x' % (addr, count_bytes)
u_boot_console.run_command(cmd)
cmd = 'crc32 %s 0x%x' % (addr, count_bytes)
response = u_boot_console.run_command(cmd)
assert expected_crc32 not in response
else:
u_boot_console.log.warning(
'CONFIG_CMD_MEMORY or CONFIG_CMD_CRC32 != y: Skipping RAM clear')
# Read data
cmd = 'mmc read %s %x %x' % (addr, sector, count_sectors)
tstart = time.time()
response = u_boot_console.run_command(cmd)
tend = time.time()
good_response = 'MMC read: dev # %d, block # %d, count %d ... %d blocks read: OK' % (
devid, sector, count_sectors, count_sectors)
assert good_response in response
# Check target RAM
if expected_crc32:
if has_cmd_crc32:
cmd = 'crc32 %s 0x%x' % (addr, count_bytes)
response = u_boot_console.run_command(cmd)
assert expected_crc32 in response
else:
u_boot_console.log.warning('CONFIG_CMD_CRC32 != y: Skipping check')
# Check if the command did not take too long
if read_duration_max:
elapsed = tend - tstart
u_boot_console.log.info('Reading %d bytes took %f seconds' %
(count_bytes, elapsed))
assert elapsed <= (read_duration_max - 0.01)
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