"Kevin O'Connor" kevin@koconnor.net wrote on 12/22/2015 10:40:03 AM:
On Mon, Dec 21, 2015 at 11:50:07AM -0500, Stefan Berger wrote:
"Kevin O'Connor" kevin@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?
TPM 2 and TPM 1.2 have completely different commands, so yes, unfortunately it's needed.
Stefan