[U-Boot] [RFC PATCH 1/2] sunxi: retrieve FEL-provided values to environment variables

Hans de Goede
2015-09-12T12:24:55Z

Hi,

On 12-09-15 13:58, Ian Campbell wrote:
> On Thu, 2015-09-10 at 20:34 +0200, Hans de Goede wrote:
>> [...]
>>
>> What if the user interrupts auto-boot with a fel provided boot.scr
>> and then does "saveenv" ?
>
> This is an interesting question which is more generic than just these
> variable, i.e. it applies to some extent to "ipaddr" when someone does
> "dhcp ; saveenv" too.
>
> Grepping around to see if there was any special handling for ipaddr I
> came across "Vendor Parameter Protection" in the top-level README as
> well as "CONFIG_ENV_FLAGS_LIST_DEFAULT" (and _STATIC) and various
> default settings in include/env_flags.h.
>
> I think CONFIG_ENV_FLAGS_LIST_* are what we want, and we want fel* to
> be flagged "r" for read only

Ah, yes that sounds exactly what we want, thanks for figuring that
out.

> and perhaps given an appropriate type
> (either "d" or "x" for decimal or hex respectively, I suppose).

Regards,

Hans