[U-Boot] [PATCH v4 7/7] test/py: add spi_flash tests
Liam Beguin
liambeguin at gmail.com
Wed Mar 14 23:15:16 UTC 2018
Add basic tests for the spi_flash subsystem.
Signed-off-by: Liam Beguin <liambeguin at gmail.com>
Reviewed-by: Stephen Warren <swarren at nvidia.com>
---
test/py/tests/test_sf.py | 218 +++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 218 insertions(+)
create mode 100644 test/py/tests/test_sf.py
diff --git a/test/py/tests/test_sf.py b/test/py/tests/test_sf.py
new file mode 100644
index 000000000000..efcd753c1abe
--- /dev/null
+++ b/test/py/tests/test_sf.py
@@ -0,0 +1,218 @@
+# Copyright (c) 2016, Xilinx Inc. Michal Simek
+# Copyright (c) 2017, Xiphos Systems Corp. All rights reserved.
+#
+# SPDX-License-Identifier: GPL-2.0
+
+import re
+import pytest
+import random
+import u_boot_utils
+
+"""
+Note: This test relies on boardenv_* containing configuration values to define
+which SPI Flash areas are available for testing. Without this, this test will
+be automatically skipped.
+For example:
+
+# A list of sections of Flash memory to be tested.
+env__sf_configs = (
+ {
+ # Where in SPI Flash should the test operate.
+ 'offset': 0x00000000,
+ # This value is optional.
+ # If present, specifies the [[bus:]cs] argument used in `sf probe`
+ # If missing, defaults to 0.
+ 'id': '0:1',
+ # This value is optional.
+ # If set as a number, specifies the speed of the SPI Flash.
+ # If set as an array of 2, specifies a range for a random speed.
+ # If missing, defaults to 0.
+ 'speed': 1000000,
+ # This value is optional.
+ # If present, specifies the size to use for read/write operations.
+ # If missing, the SPI Flash page size is used as a default (based on
+ # the `sf probe` output).
+ 'len': 0x10000,
+ # This value is optional.
+ # If present, specifies if the test can write to Flash offset
+ # If missing, defaults to False.
+ 'writeable': False,
+ # This value is optional.
+ # If present, specifies the expected CRC32 value of the flash area.
+ # If missing, extra check is ignored.
+ 'crc32': 0xCAFECAFE,
+ },
+)
+"""
+
+def sf_prepare(u_boot_console, env__sf_config):
+ """Check global state of the SPI Flash before running any test.
+
+ Args:
+ u_boot_console: A U-Boot console connection.
+ env__sf_config: The single SPI Flash device configuration on which to
+ run the tests.
+
+ Returns:
+ sf_params: a dictionnary of SPI Flash parameters.
+ """
+
+ sf_params = {}
+ sf_params['ram_base'] = u_boot_utils.find_ram_base(u_boot_console)
+
+ probe_id = env__sf_config.get('id', 0)
+ speed = env__sf_config.get('speed', 0)
+ if isinstance(speed, int):
+ sf_params['speed'] = speed
+ else:
+ assert len(speed) == 2, "If speed is a list, it must have 2 entries"
+ sf_params['speed'] = random.randint(speed[0], speed[1])
+
+ cmd = 'sf probe %d %d' % (probe_id, sf_params['speed'])
+
+ output = u_boot_console.run_command(cmd)
+ assert 'SF: Detected' in output, 'No Flash device available'
+
+ m = re.search('page size (.+?) Bytes', output)
+ assert m, 'SPI Flash page size not recognized'
+ sf_params['page_size'] = int(m.group(1))
+
+ m = re.search('erase size (.+?) KiB', output)
+ assert m, 'SPI Flash erase size not recognized'
+ sf_params['erase_size'] = int(m.group(1))
+ sf_params['erase_size'] *= 1024
+
+ m = re.search('total (.+?) MiB', output)
+ assert m, 'SPI Flash total size not recognized'
+ sf_params['total_size'] = int(m.group(1))
+ sf_params['total_size'] *= 1024 * 1024
+
+ assert 'offset' in env__sf_config, \
+ '\'offset\' is required for this test.'
+ sf_params['len'] = env__sf_config.get('len', sf_params['erase_size'])
+
+ assert not env__sf_config['offset'] % sf_params['erase_size'], \
+ 'offset not multiple of erase size.'
+ assert not sf_params['len'] % sf_params['erase_size'], \
+ 'erase length not multiple of erase size.'
+
+ assert not (env__sf_config.get('writeable', False) and
+ 'crc32' in env__sf_config), \
+ 'Cannot check crc32 on writeable sections'
+
+ return sf_params
+
+def sf_read(u_boot_console, env__sf_config, sf_params):
+ """Helper function used to read and compute the CRC32 value of a section of
+ SPI Flash memory.
+
+ Args:
+ u_boot_console: A U-Boot console connection.
+ env__sf_config: The single SPI Flash device configuration on which to
+ run the tests.
+ sf_params: SPI Flash parameters.
+
+ Returns:
+ CRC32 value of SPI Flash section
+ """
+
+ addr = sf_params['ram_base']
+ offset = env__sf_config['offset']
+ count = sf_params['len']
+ pattern = random.randint(0, 0xFF)
+ crc_expected = env__sf_config.get('crc32', None)
+
+ cmd = 'mw.b %08x %02x %x' % (addr, pattern, count)
+ u_boot_console.run_command(cmd)
+ crc_pattern = u_boot_utils.crc32(u_boot_console, addr, count)
+ if crc_expected:
+ assert crc_pattern != crc_expected
+
+ cmd = 'sf read %08x %08x %x' % (addr, offset, count)
+ response = u_boot_console.run_command(cmd)
+ assert 'Read: OK' in response, 'Read operation failed'
+ crc_readback = u_boot_utils.crc32(u_boot_console, addr, count)
+ assert crc_pattern != crc_readback, 'sf read did not update RAM content.'
+ if crc_expected:
+ assert crc_readback == crc_expected
+
+ return crc_readback
+
+def sf_update(u_boot_console, env__sf_config, sf_params):
+ """Helper function used to update a section of SPI Flash memory.
+
+ Args:
+ u_boot_console: A U-Boot console connection.
+ env__sf_config: The single SPI Flash device configuration on which to
+ run the tests.
+
+ Returns:
+ CRC32 value of SPI Flash section
+ """
+
+ addr = sf_params['ram_base']
+ offset = env__sf_config['offset']
+ count = sf_params['len']
+ pattern = int(random.random() * 0xFF)
+
+ cmd = 'mw.b %08x %02x %x' % (addr, pattern, count)
+ u_boot_console.run_command(cmd)
+ crc_pattern = u_boot_utils.crc32(u_boot_console, addr, count)
+
+ cmd = 'sf update %08x %08x %x' % (addr, offset, count)
+ u_boot_console.run_command(cmd)
+ crc_readback = sf_read(u_boot_console, env__sf_config, sf_params)
+
+ assert crc_readback == crc_pattern
+
+ at pytest.mark.buildconfigspec('cmd_sf')
+ at pytest.mark.buildconfigspec('cmd_crc32')
+ at pytest.mark.buildconfigspec('cmd_memory')
+def test_sf_read(u_boot_console, env__sf_config):
+ sf_params = sf_prepare(u_boot_console, env__sf_config)
+ sf_read(u_boot_console, env__sf_config, sf_params)
+
+ at pytest.mark.buildconfigspec('cmd_sf')
+ at pytest.mark.buildconfigspec('cmd_crc32')
+ at pytest.mark.buildconfigspec('cmd_memory')
+def test_sf_read_twice(u_boot_console, env__sf_config):
+ sf_params = sf_prepare(u_boot_console, env__sf_config)
+
+ crc1 = sf_read(u_boot_console, env__sf_config, sf_params)
+ sf_params['ram_base'] += 0x100
+ crc2 = sf_read(u_boot_console, env__sf_config, sf_params)
+
+ assert crc1 == crc2, 'CRC32 of two successive read operation do not match'
+
+ at pytest.mark.buildconfigspec('cmd_sf')
+ at pytest.mark.buildconfigspec('cmd_crc32')
+ at pytest.mark.buildconfigspec('cmd_memory')
+def test_sf_erase(u_boot_console, env__sf_config):
+ if not env__sf_config.get('writeable', False):
+ pytest.skip('Flash config is tagged as not writeable')
+
+ sf_params = sf_prepare(u_boot_console, env__sf_config)
+ addr = sf_params['ram_base']
+ offset = env__sf_config['offset']
+ count = sf_params['len']
+
+ cmd = 'sf erase %08x %x' % (offset, count)
+ output = u_boot_console.run_command(cmd)
+ assert 'Erased: OK' in output, 'Erase operation failed'
+
+ cmd = 'mw.b %08x ff %x' % (addr, count)
+ u_boot_console.run_command(cmd)
+ crc_ffs = u_boot_utils.crc32(u_boot_console, addr, count)
+
+ crc_read = sf_read(u_boot_console, env__sf_config, sf_params)
+ assert crc_ffs == crc_read, 'Unexpected CRC32 after erase operation.'
+
+ at pytest.mark.buildconfigspec('cmd_sf')
+ at pytest.mark.buildconfigspec('cmd_crc32')
+ at pytest.mark.buildconfigspec('cmd_memory')
+def test_sf_update(u_boot_console, env__sf_config):
+ if not env__sf_config.get('writeable', False):
+ pytest.skip('Flash config is tagged as not writeable')
+
+ sf_params = sf_prepare(u_boot_console, env__sf_config)
+ sf_update(u_boot_console, env__sf_config, sf_params)
--
2.16.1.72.g5be1f00a9a70
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