Re: [Xen-devel] vTPM Manager shuts down

[Ross Philipson <Ross.Philipson@xxxxxxxxxx>]

> -----Original Message-----
> From: xen-devel-bounces@xxxxxxxxxxxxx [mailto:xen-devel-
> bounces@xxxxxxxxxxxxx] On Behalf Of Konrad Rzeszutek Wilk
> Sent: Wednesday, May 22, 2013 2:00 PM
> To: Daniel De Graaf
> Cc: Jordi Cucurull Juan; xen-devel@xxxxxxxxxxxxx
> Subject: Re: [Xen-devel] vTPM Manager shuts down
> 
> > (XEN) General information for domain 5:
> > (XEN)     refcnt=3 dying=0 pause_count=0
> > (XEN)     nr_pages=7168 xenheap_pages=5 shared_pages=0 paged_pages=0
> dirty_cpus={} max_pages=7424
> > (XEN)     handle=3097d8b9-8d80-4bde-94b6-978c98c37296
> vm_assist=00000000
> > (XEN) Rangesets belonging to domain 5:
> > (XEN)     I/O Ports  { }
> > (XEN)     Interrupts { }
> > (XEN)     I/O Memory { fed40 }
> >
> > Note: my config contains "iomem=['fed40,1']" not "iomem=['fed40,5']"
> so your
> > output will differ there.
> 
> Is that address (fed40) standard? Are there other TPM devices at other
> locations?

Yes that is defined in the TCG's TPM spec. That is the beginning of the PCRs
for locality 0 and they range up to locality 4: FED4_0xxxh - FED4_4xxxh

If you search for something like 
TCG_PCClientTPMSpecification_1-21_1-00_FINAL.pdf
you can find that information (chapter 9 is on locality).

> How does one find them? lspci?

The TPM lives on the LPC bus. Some of its features are exported in sysfs:

/sys/class/misc/tpm0

> 
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