[U-Boot] [PATCH 8/8] Migrate generic bootcount to Kconfig

Lukasz Majewski
2018-02-14T19:13:11Z

Hi Alex,

> On Wed, Feb 14, 2018 at 8:53 AM, Lukasz Majewski <lukma@denx.de>
> wrote:
> >> >> Whatever we do, I think CONFIG_SYS_BOOTCOUNT_ADDR wants
> >> >> splitting into at least two:
> >> >>
> >> >> - I2C - an offset from an I2C base for the bootcounter
> >> > - RAM/SoC memory - location of special register to store
> >> > bootcounter
> >> >> - Others - an actual address used for storing the bootcounter
> >> >
> >> >
> >> >
> >> >>
> >> >> I'm struggling to see why EXT is the way it is - AFAICS the
> >> >> location it uses to access/return the bootcounter is basically
> >> >> local to the two functions in bootcount_ext and could just be a
> >> >> local variable.
> >> >
> >> > Maybe we can replace it with local, static variable then?
> >> >
> >> >
> >> > As said above - I would remove the (wrongly?) used
> >> > BOOTCOUNT_ADDR in Kconfig.
> >> >
> >>
> >> Just removing SYS_BOOTCOUNT_ADDR from Kconfig and putting the
> >> default back into bootcount_ext seems like the simplest correct
> >> change. I'll add that onto the series and throw it at Travis.
> >
> > Great. I'm looking forward for next verison of the code - as I do
> > have some code to be put on top of it.
> >
>
> So the super-trivial approach doesn't work, because
> CONFIG_SYS_BOOTCOUNT_ADDR isn't in the whitelist anymore
> (7af2e3648f3f6d726f6476745c2eec5de709a702) and I think the only reason
> it was getting through before is because scripts/check-config.sh
> doesn't parse conditionals in Kconfig so thought it was allowed :(
>
> I expect reintroducing CONFIG_SYS_BOOTCOUNT_ADDR to
> config_whitelist.txt would "fix" the problem, but that's not going to
> make it in.
>
> Which I think means I have to do the work to migrate it out of CONFIG_
> land properly.
>

Ok. I see.

Best regards,

Lukasz Majewski

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