[PATCH v3 4/6] cmd: bcb: introduce 'ab_dump' command to print BCB block content

Dmitry Rokosov ddrokosov at salutedevices.com
Wed Oct 9 15:26:14 CEST 2024


Hello Simon,

On Tue, Oct 08, 2024 at 07:57:15PM -0600, Simon Glass wrote:
> On Tue, 8 Oct 2024 at 14:18, Dmitry Rokosov <ddrokosov at salutedevices.com> wrote:
> >
> > 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
> > ====
> >
> > Signed-off-by: Dmitry Rokosov <ddrokosov at salutedevices.com>
> > ---
> >  boot/android_ab.c    | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++++
> >  cmd/bcb.c            | 35 +++++++++++++++++++++++++++
> >  include/android_ab.h | 10 ++++++++
> >  3 files changed, 113 insertions(+)
> >
> 
> Reviewed-by: Simon Glass <sjg at chromium.org>
> 
> Can you also update the test?

I apologize, but I didn't quite understand your point. Could you please
clarify? This patch series includes additional tests for the 'ab_dump'
subcommand. For more details, please refer to:

https://lore.kernel.org/all/20241008-android_ab_master-v3-6-f292c45a33e4@salutedevices.com/

-- 
Thank you,
Dmitry


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