[U-Boot] [PATCH v2 2/2] cmd: Add 'bcb' command to read/modify/write BCB fields

[Alex Kiernan]

On Tue, May 21, 2019 at 9:37 AM Lukasz Majewski <lukma at denx.de> wrote:
>
> Hi Alex,
>
> > On Mon, May 20, 2019 at 8:23 AM Eugeniu Rosca <erosca at de.adit-jv.com>
> > wrote:
> > >
> > > >
> > > > Should it default to enabled if avb is used?
> > >
> > > I think at this specific moment in time, 'bcb' is orthogonal
> > > (meaning it is neither a direct, nor a reverse dependency) to any
> > > other Android feature in U-Boot. This could be re-assessed, if
> > > platform maintainers start to rely on 'bcb' in their U-Boot
> > > environments on regular basis.
> >
> > 'bcb' looks like something I'd be interested in, not running Android
> > at all... currently I (ab)use the bootcounter to communicate between
> > the kernel and U-Boot when I want to force a board through recovery,
>
> I don't know your exact use case, but wouldn't it be better to use envs
> (with redundancy) and fw_setenv / fw_printenv from Linux user space?
>
> Now those envs even support setting default values for u-boot (as there
> is now separate library used for it). Moreover there is OE/Yocto's
> recipe 'u-boot-fw-utils' which can be easily used and installed.
>

It's a long story... I'm constrained by historic choices, which makes
using the environment problematic. But you're right.

-- 
Alex Kiernan