[U-Boot] Duplicate environment variables in RAM?!?

[U-Boot] Duplicate environment variables in RAM?!?

[dbrazeau]

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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[U-Boot] Duplicate environment variables in RAM?!?

[dbrazeau]

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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