[SeaBIOS] SeaBIOS Digest, Vol 72, Issue 33
Kevin O'Connor
kevin at koconnor.net
Tue Dec 22 16:40:03 CET 2015
On Mon, Dec 21, 2015 at 11:50:07AM -0500, Stefan Berger wrote:
> "Kevin O'Connor" <kevin at koconnor.net> wrote on 12/17/2015 05:22:56 PM:
>
> >
> > On Mon, Nov 30, 2015 at 11:32:05AM +0000, Wim Vervoorn wrote:
> > > Hello,
> > >
> > > I noticed that a lot of work is going on for the TPM support in
> SeaBIOS.
> > >
> > > All of this work is TPM 1.2 based. I was wondering if there are any
> > > plans to support TPM 2.0 in the future.
> >
> > I'm not aware of any plans.
>
> We're working on it...
>
>
> So maybe you have some comments to the following:
>
> There will be a patch for probing the TPM TIS hardware interface for
> whether there's a TPM 1.2 or a TPM 2.
> We then have a patch for prefixing all TPM 1.2 functions with tpm12_ and
> then introduce functions like these ones here:
>
> static ... tpm12_foo() { ... }
> static ... tpm2_foo() { ... }
>
> tpm_foo()
> {
> [...]
>
> switch (tpmversion) {
> case TPM_VERSION_1_2:
> tpm12_foo()
> break;
> case TPM_VERSION_2:
> tpm2_foo();
> break;
> }
>
> [...]
> }
Is the difference between 1.2 and 2.0 so large that the above is
needed?
-Kevin
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