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a995084beb
It's really helpful to have the ability to dump BCB block for debugging A/B logic on the board supported this partition schema. Command 'bcb ab_dump' prints all fields of bootloader_control struct including slot_metadata for all presented slots. Output example: ===== > board# bcb ab_dump ubi 0#misc > Read 512 bytes from volume misc to 000000000bf07580 > Read 512 bytes from volume misc to 000000000bf42f40 > Bootloader Control: [misc] > Active Slot: _a > Magic Number: 0x42414342 > Version: 1 > Number of Slots: 2 > Recovery Tries Remaining: 0 > CRC: 0x2c8b50bc (Valid) > > Slot[0] Metadata: > - Priority: 15 > - Tries Remaining: 0 > - Successful Boot: 1 > - Verity Corrupted: 0 > > Slot[1] Metadata: > - Priority: 14 > - Tries Remaining: 7 > - Successful Boot: 0 > - Verity Corrupted: 0 ==== The ab_dump command allows you to display ABC data directly on the U-Boot console. During an A/B test execution, this test verifies the accuracy of each field within the ABC data. Signed-off-by: Dmitry Rokosov <ddrokosov@salutedevices.com> Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> Tested-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> # vim3_android Link: https://lore.kernel.org/r/20241017-android_ab_master-v5-5-43bfcc096d95@salutedevices.com Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
99 lines
3.5 KiB
Python
99 lines
3.5 KiB
Python
# SPDX-License-Identifier: GPL-2.0
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# (C) Copyright 2018 Texas Instruments, <www.ti.com>
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# Test A/B update commands.
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import os
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import pytest
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import u_boot_utils
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class ABTestDiskImage(object):
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"""Disk Image used by the A/B tests."""
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def __init__(self, u_boot_console):
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"""Initialize a new ABTestDiskImage object.
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Args:
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u_boot_console: A U-Boot console.
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Returns:
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Nothing.
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"""
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filename = 'test_ab_disk_image.bin'
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persistent = u_boot_console.config.persistent_data_dir + '/' + filename
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self.path = u_boot_console.config.result_dir + '/' + filename
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with u_boot_utils.persistent_file_helper(u_boot_console.log, persistent):
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if os.path.exists(persistent):
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u_boot_console.log.action('Disk image file ' + persistent +
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' already exists')
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else:
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u_boot_console.log.action('Generating ' + persistent)
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fd = os.open(persistent, os.O_RDWR | os.O_CREAT)
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os.ftruncate(fd, 524288)
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os.close(fd)
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cmd = ('sgdisk', persistent)
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u_boot_utils.run_and_log(u_boot_console, cmd)
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cmd = ('sgdisk', '--new=1:64:512', '--change-name=1:misc',
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persistent)
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u_boot_utils.run_and_log(u_boot_console, cmd)
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cmd = ('sgdisk', '--load-backup=' + persistent)
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u_boot_utils.run_and_log(u_boot_console, cmd)
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cmd = ('cp', persistent, self.path)
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u_boot_utils.run_and_log(u_boot_console, cmd)
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di = None
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@pytest.fixture(scope='function')
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def ab_disk_image(u_boot_console):
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global di
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if not di:
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di = ABTestDiskImage(u_boot_console)
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return di
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def ab_dump(u_boot_console, slot_num, crc):
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output = u_boot_console.run_command('bcb ab_dump host 0#misc')
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header, slot0, slot1 = output.split('\r\r\n\r\r\n')
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slots = [slot0, slot1]
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slot_suffixes = ['_a', '_b']
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header = dict(map(lambda x: map(str.strip, x.split(':')), header.split('\r\r\n')))
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assert header['Bootloader Control'] == '[misc]'
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assert header['Active Slot'] == slot_suffixes[slot_num]
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assert header['Magic Number'] == '0x42414342'
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assert header['Version'] == '1'
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assert header['Number of Slots'] == '2'
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assert header['Recovery Tries Remaining'] == '0'
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assert header['CRC'] == '{} (Valid)'.format(crc)
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slot = dict(map(lambda x: map(str.strip, x.split(':')), slots[slot_num].split('\r\r\n\t- ')[1:]))
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assert slot['Priority'] == '15'
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assert slot['Tries Remaining'] == '6'
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assert slot['Successful Boot'] == '0'
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assert slot['Verity Corrupted'] == '0'
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@pytest.mark.boardspec('sandbox')
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@pytest.mark.buildconfigspec('android_ab')
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@pytest.mark.buildconfigspec('cmd_bcb')
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@pytest.mark.requiredtool('sgdisk')
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def test_ab(ab_disk_image, u_boot_console):
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"""Test the 'bcb ab_select' command."""
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u_boot_console.run_command('host bind 0 ' + ab_disk_image.path)
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output = u_boot_console.run_command('bcb ab_select slot_name host 0#misc')
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assert 're-initializing A/B metadata' in output
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assert 'Attempting slot a, tries remaining 7' in output
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output = u_boot_console.run_command('printenv slot_name')
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assert 'slot_name=a' in output
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ab_dump(u_boot_console, 0, '0xd438d1b9')
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output = u_boot_console.run_command('bcb ab_select slot_name host 0:1')
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assert 'Attempting slot b, tries remaining 7' in output
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output = u_boot_console.run_command('printenv slot_name')
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assert 'slot_name=b' in output
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ab_dump(u_boot_console, 1, '0x011ec016')
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