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cmd: bcb: introduce 'ab_dump' command to print BCB block content

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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>
This commit is contained in:
Dmitry Rokosov 2024-10-17 17:12:10 +03:00 • committed by Mattijs Korpershoek
parent b1bc9a2fc9
commit a995084beb
4 changed files with 132 additions and 0 deletions
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23
test/py/tests/test_android/test_ab.py
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@ -54,6 +54,27 @@ def ab_disk_image(u_boot_console):
di = ABTestDiskImage(u_boot_console)
return di
def ab_dump(u_boot_console, slot_num, crc):
output = u_boot_console.run_command('bcb ab_dump host 0#misc')
header, slot0, slot1 = output.split('\r\r\n\r\r\n')
slots = [slot0, slot1]
slot_suffixes = ['_a', '_b']
header = dict(map(lambda x: map(str.strip, x.split(':')), header.split('\r\r\n')))
assert header['Bootloader Control'] == '[misc]'
assert header['Active Slot'] == slot_suffixes[slot_num]
assert header['Magic Number'] == '0x42414342'
assert header['Version'] == '1'
assert header['Number of Slots'] == '2'
assert header['Recovery Tries Remaining'] == '0'
assert header['CRC'] == '{} (Valid)'.format(crc)
slot = dict(map(lambda x: map(str.strip, x.split(':')), slots[slot_num].split('\r\r\n\t- ')[1:]))
assert slot['Priority'] == '15'
assert slot['Tries Remaining'] == '6'
assert slot['Successful Boot'] == '0'
assert slot['Verity Corrupted'] == '0'
@pytest.mark.boardspec('sandbox')
@pytest.mark.buildconfigspec('android_ab')
@pytest.mark.buildconfigspec('cmd_bcb')
@ -68,8 +89,10 @@ def test_ab(ab_disk_image, u_boot_console):
assert 'Attempting slot a, tries remaining 7' in output
output = u_boot_console.run_command('printenv slot_name')
assert 'slot_name=a' in output
ab_dump(u_boot_console, 0, '0xd438d1b9')
output = u_boot_console.run_command('bcb ab_select slot_name host 0:1')
assert 'Attempting slot b, tries remaining 7' in output
output = u_boot_console.run_command('printenv slot_name')
assert 'slot_name=b' in output
ab_dump(u_boot_console, 1, '0x011ec016')