[U-Boot] a few questions about saving bootcount in the environment

[Robert P. J. Day]

On Tue, 26 Jul 2016, Wolfgang Denk wrote:

> Dear Robert,
>
> In message <alpine.LFD.2.20.1607260734020.10018 at localhost.localdomain> you wrote:
> >
> >   ok, i am now *totally* confused, so let's start at the beginning.
> > it's my understanding that selecting CONFIG_BOOTCOUNT_LIMIT means you
>
> right.
>
> > want to use the boot counter, it does *not* select what method you
> > want to use to store the boot counter, correct? but here's the
> > confusing part.
>
> Which exact part is confusing?
>
> >     #ifdef CONFIG_BOOTCOUNT_LIMIT
> >           bootcount = bootcount_load();
> >           bootcount++;
> >           bootcount_store(bootcount);
> >           setenv_ulong("bootcount", bootcount);      <----- ?????
> >           bootlimit = getenv_ulong("bootlimit", 10, 0);
> >     #endif /* CONFIG_BOOTCOUNT_LIMIT */
>
> This is only the equivalent of a "setenv", so you have a variable in
> the environment which you can use in scripts or compare against
> "bootlimit".
>
> There is NO automatic "saveenv" here...

  ah, you're right, you're right, sorry. little by little ...

rday

-- 

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Robert P. J. Day                                 Ottawa, Ontario, CANADA
                        http://crashcourse.ca

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