[U-Boot] Duplicate environment variables in RAM?!?
dbrazeau
dbrazeau1024 at gmail.com
Wed Sep 1 23:08:23 CEST 2010
So I figured out what my issue was. I was defining CONFIG_IPADDR in my
config .h file and also added ipaddr=xxx.xxx.xxx.xxx to my defined
environment variables list in the config .h file. I did not realize that
the ipaddr environment variabe (along with others) are added in the variable
list in the env_common.c file. As a result I was starting out with
duplicate variables before every setting 'ipaddr'.
dbrazeau wrote:
>
> For some variables, for example "ipaddr", when I try to change them using
> "setenv" it does not update the current "ipaddr" variable in RAM it
> creates a new one and append it to the end of the variable list. As a
> result I end up having two "ipaddr" variables in RAM, one with the
> original value and one with the new value at the end of the list. If I
> try to set the variable a second time it deletes the first instance (the
> original) and adds the second new one to the end of the variable list.
>
> This may be a little confusing so here is an abbreviated example. The
> '.....' represent the rest of the variables in the list.
>
> Original list of variables
> ---------------------
> .......
> ipaddr=10.0.5.2
> .......
> ---------------------
>
> =>setenv ipaddr 10.0.16.4
> Now the variables look like this
> ---------------------
> .......
> ipaddr=10.0.5.2
> .......
> ipaddr=10.0.16.4
> ---------------------
>
> =>setenv ipaddr 10.0.28.7
> And now the variables look like this
> ---------------------
> .......
> .......
> ipaddr=10.0.16.4
> ipaddr=10.0.28.7
> ---------------------
>
> Is this the intended behavior? I am running an older version (U-Boot
> 1.3.4) so maybe this has been fixed. If this is the case could you point
> me to the version that it is fixed in.
>
> Thanks.
>
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