On 10/20/2014 7:11 PM, David Li wrote:
> Hi,
>
> I am trying to use IBM software TPM following the instructions at
>
> http://ibmswtpm.sourceforge.net/tpm_tss.html
>
> This is what I have done:
>
> - Started "tpm_server"
>
> - Ran the following successfully
>
>> tpmbios                              (each time the TPM is started)
>> createek                             (only required once)
>> ./nv_definespace -in ffffffff -sz 0  (only required once)
>
> Though I am not quite sure what the last cmd did.

The SW TPM "ships" just as a HW TPM ships, with NV unlocked.  The last 
command locks it.

>
> But when I tried to start tcsd, here is what I got:
>
> sudo /usr/local/sbin/tcsd -e -f
>
> TCSD TDDL ERROR: Could not find a device to open!
>
> Can anyone tell what I am missing here?

Did you set the env variable

# export TCSD_TCP_DEVICE_PORT=6543

or the equivalent for your shell.  I suspect that you set the env 
variable for some shell, then sudo lost it.  Try su and then setting the 
env variable.

Are you running tcsd on the same platform as the SW TPM?

Was the SW TPM still running.



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