Add a standalone MMC block read test. This allows direct testing of MMC access rather than relying on doing so as a side-effect of e.g. DFU or UMS testing, which may not be enabled on all platforms. Signed-off-by: Stephen Warren <swarren@nvidia.com>master
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# Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved. |
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# |
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# SPDX-License-Identifier: GPL-2.0 |
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|
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# Test U-Boot's "mmc read" command. The test reads data from the eMMC or SD |
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# card, and validates the no errors occurred, and that the expected data was |
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# read if the test configuration contains a CRC of the expected data. |
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|
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import pytest |
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import u_boot_utils |
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|
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""" |
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This test relies on boardenv_* to containing configuration values to define |
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which MMC devices should be tested. For example: |
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env__mmc_rd_configs = ( |
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{ |
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"fixture_id": "emmc-boot0", |
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"is_emmc": True, |
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"devid": 0, |
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"partid": 1, |
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"sector": 0x10, |
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"count": 1, |
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}, |
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{ |
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"fixture_id": "emmc-boot1", |
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"is_emmc": True, |
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"devid": 0, |
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"partid": 2, |
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"sector": 0x10, |
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"count": 1, |
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}, |
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{ |
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"fixture_id": "emmc-data", |
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"is_emmc": True, |
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"devid": 0, |
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"partid": 0, |
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"sector": 0x10, |
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"count": 0x1000, |
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}, |
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{ |
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"fixture_id": "sd-mbr", |
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"is_emmc": False, |
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"devid": 1, |
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"partid": None, |
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"sector": 0, |
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"count": 1, |
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"crc32": "8f6ecf0d", |
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}, |
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{ |
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"fixture_id": "sd-large", |
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"is_emmc": False, |
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"devid": 1, |
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"partid": None, |
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"sector": 0x10, |
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"count": 0x1000, |
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}, |
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) |
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""" |
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|
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@pytest.mark.buildconfigspec('cmd_mmc') |
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def test_mmc_rd(u_boot_console, env__mmc_rd_config): |
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"""Test the "mmc read" command. |
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|
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Args: |
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u_boot_console: A U-Boot console connection. |
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env__mmc_rd_config: The single MMC configuration on which |
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to run the test. See the file-level comment above for details |
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of the format. |
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Returns: |
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Nothing. |
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""" |
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is_emmc = env__mmc_rd_config['is_emmc'] |
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devid = env__mmc_rd_config['devid'] |
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partid = env__mmc_rd_config.get('partid', 0) |
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sector = env__mmc_rd_config.get('sector', 0) |
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count_sectors = env__mmc_rd_config.get('count', 1) |
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expected_crc32 = env__mmc_rd_config.get('crc32', None) |
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|
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count_bytes = count_sectors * 512 |
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bcfg = u_boot_console.config.buildconfig |
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has_cmd_memory = bcfg.get('config_cmd_memory', 'n') == 'y' |
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has_cmd_crc32 = bcfg.get('config_cmd_crc32', 'n') == 'y' |
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ram_base = u_boot_utils.find_ram_base(u_boot_console) |
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addr = '0x%08x' % ram_base |
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|
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# Select MMC device |
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cmd = 'mmc dev %d' % devid |
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if is_emmc: |
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cmd += ' %d' % partid |
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response = u_boot_console.run_command(cmd) |
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assert 'no card present' not in response |
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if is_emmc: |
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partid_response = "(part %d)" % partid |
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else: |
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partid_response = "" |
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good_response = 'mmc%d%s is current device' % (devid, partid_response) |
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assert good_response in response |
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|
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# Clear target RAM |
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if expected_crc32: |
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if has_cmd_memory and has_cmd_crc32: |
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cmd = 'mw.b %s 0 0x%x' % (addr, count_bytes) |
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u_boot_console.run_command(cmd) |
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cmd = 'crc32 %s 0x%x' % (addr, count_bytes) |
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response = u_boot_console.run_command(cmd) |
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assert expected_crc32 not in response |
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else: |
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u_boot_console.log.warning( |
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'CONFIG_CMD_MEMORY or CONFIG_CMD_CRC32 != y: Skipping RAM clear') |
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# Read data |
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cmd = 'mmc read %s %x %x' % (addr, sector, count_sectors) |
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response = u_boot_console.run_command(cmd) |
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good_response = 'MMC read: dev # %d, block # %d, count %d ... %d blocks read: OK' % ( |
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devid, sector, count_sectors, count_sectors) |
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assert good_response in response |
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|
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# Check target RAM |
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if expected_crc32: |
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if has_cmd_crc32: |
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cmd = 'crc32 %s 0x%x' % (addr, count_bytes) |
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response = u_boot_console.run_command(cmd) |
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assert expected_crc32 in response |
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else: |
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u_boot_console.log.warning('CONFIG_CMD_CRC32 != y: Skipping check') |
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