trousers-users

[TrouSerS-users] T61 BIOS not TCG aware?

[David S. <dav...@gm...>]

Hi,

I've been testing various thinkpad models TPM chips lately. Specifically, the 
X40, X60, X60 tablet, X61, T43[p], T60[p], and T61[p]. Not the X300 yet, 
unfortunately.

Specifically the T61 (but not the T61p) appears to not use a TCG aware BIOS. 
There is apparently no way to clear the TPM from the BIOS and using the 
latest tpm-tools, I was able to assert physical presence and clear the chip 
from a running system. If anyone else has a T61 can you please verify? Also, 
I find it most surprising that the T61p *does* seem to be TCG aware, as are 
all of the other thinkpads I have been testing.

tpm_version output from T60:
TPM 1.2 Version Info:
Chip Version:	1.2.13.9
Spec Level:	2
Errata Revision:	1
TPM Vendor ID:	ATML
TPM Version:	01010000
Manufacturer Info:	41544d4c

Cheers,
David Smith
-- 
man perl | tail -6 | head -2

Re: [TrouSerS-users] T61 BIOS not TCG aware?

[Hal F. <hal...@gm...>]

That's interesting information. Are some of those older models? I
would be surprised if a Lenovo PC manufactured today with a TPM had a
TPM unaware BIOS.

Hal

On Wed, Apr 9, 2008 at 2:21 AM, David Smith
<dav...@gm...> wrote:
> Hi,
>
>  I've been testing various thinkpad models TPM chips lately. Specifically, the
>  X40, X60, X60 tablet, X61, T43[p], T60[p], and T61[p]. Not the X300 yet,
>  unfortunately.
>
>  Specifically the T61 (but not the T61p) appears to not use a TCG aware BIOS.
>  There is apparently no way to clear the TPM from the BIOS and using the
>  latest tpm-tools, I was able to assert physical presence and clear the chip
>  from a running system. If anyone else has a T61 can you please verify? Also,
>  I find it most surprising that the T61p *does* seem to be TCG aware, as are
>  all of the other thinkpads I have been testing.
>
>  tpm_version output from T60:
>  TPM 1.2 Version Info:
>  Chip Version:   1.2.13.9
>  Spec Level:     2
>  Errata Revision:        1
>  TPM Vendor ID:  ATML
>  TPM Version:    01010000
>  Manufacturer Info:      41544d4c
>
>  Cheers,
>  David Smith

Re: [TrouSerS-users] T61 BIOS not TCG aware?

[David S. <dav...@gm...>]

2008/04/10 (Thu) 01:37:05 に Hal Finney さんは書きました:
> That's interesting information. Are some of those older models? I
> would be surprised if a Lenovo PC manufactured today with a TPM had a
> TPM unaware BIOS.
>

The T61 is quite new, but not the latest. It was released last year and I 
think can be considered, along with the T61p, the flagship model. The only 
difference I assumed between the T61 and T61p was the T60 is a smaller, 
wide-screen form factor so finding the lack of TCG aware BIOS was quite 
surprising.

Cheers,
- dds

> Hal
>
> On Wed, Apr 9, 2008 at 2:21 AM, David Smith
>
> <dav...@gm...> wrote:
> > Hi,
> >
> >  I've been testing various thinkpad models TPM chips lately.
> > Specifically, the X40, X60, X60 tablet, X61, T43[p], T60[p], and T61[p].
> > Not the X300 yet, unfortunately.
> >
> >  Specifically the T61 (but not the T61p) appears to not use a TCG aware
> > BIOS. There is apparently no way to clear the TPM from the BIOS and using
> > the latest tpm-tools, I was able to assert physical presence and clear
> > the chip from a running system. If anyone else has a T61 can you please
> > verify? Also, I find it most surprising that the T61p *does* seem to be
> > TCG aware, as are all of the other thinkpads I have been testing.
> >
> >  tpm_version output from T60:
> >  TPM 1.2 Version Info:
> >  Chip Version:   1.2.13.9
> >  Spec Level:     2
> >  Errata Revision:        1
> >  TPM Vendor ID:  ATML
> >  TPM Version:    01010000
> >  Manufacturer Info:      41544d4c
> >
> >  Cheers,
> >  David Smith



-- 
man perl | tail -6 | head -2

Re: [TrouSerS-users] T61 BIOS not TCG aware?

[Seiji M. <sei...@gm...>]

Hi,

2008/4/10, David Smith <dav...@gm...>:
> 2008/04/10 (Thu) 01:37:05 に Hal Finney さんは書きました:
> The T61 is quite new, but not the latest. It was released last year and I
>  think can be considered, along with the T61p, the flagship model. The only
>  difference I assumed between the T61 and T61p was the T60 is a smaller,
>  wide-screen form factor so finding the lack of TCG aware BIOS was quite
>  surprising.

As far as I know,  T61 that I was tested supports Trusted Boot.
(Type: 76735BJ, BIOS: 7NET29WW)

>  > >  Specifically the T61 (but not the T61p) appears to not use a TCG aware
>  > > BIOS. There is apparently no way to clear the TPM from the BIOS and using
>  > > the latest tpm-tools, I was able to assert physical presence and clear
>  > > the chip from a running system. If anyone else has a T61 can you please
>  > > verify? Also, I find it most surprising that the T61p *does* seem to be
>  > > TCG aware, as are all of the other thinkpads I have been testing.

But not tested the clear operation.
Unfortunately, I don't have that machine now.
--
Seiji