On Tue, Aug 16, 2016 at 10:48:53PM +0300, Jarkko Sakkinen wrote: > On Wed, Aug 17, 2016 at 12:46:40AM +0530, Nayna wrote: > > Hi Jarkko, > > > > > > > > On 08/16/2016 02:56 AM, Jarkko Sakkinen wrote: > > >On Fri, Aug 12, 2016 at 06:02:00PM +0530, Nayna wrote: > > >>>>Jarkko, Please let me know if it doesn't answer your question. </nayna> > > >>> > > >>>1. EFI does not pass the log by any means AFAIK before a boot loader > > >>> calls ExitBootServices(). > > >> > > >>So, is current TCPA support only for TPM1.2 ? > > > > > >TCPA ACPI table is only available for TPM 1.2. > > > > > >TPM2 ACPI table does not provide a memory ref for the event log. > > > > > >>#2, TCG Spec > > >>http://www.trustedcomputinggroup.org/wp-content/uploads/EFI-Protocol-Specification-rev13-160330final.pdf > > >>talks about > > >>EFI_TCG2_PROTOCOL.GetEventLog (Section 6.5), what is that supposed to do ? > > > > > >Direct quote from your reference: > > > > > >"Boot Service Drivers are terminated when ExitBootServices() is called > > >and all memory resources consumed by the Boot Services Drivers are > > >released for use in the operating system environment." > > > > Thanks Jarkko, I understand now what you meant. > > > > > >>>2. I do not have any system with TPM2 that uses DT. And as I stated > > >>> before you didn't have any reference where you derived the DT > > >>> node fields. > > >> > > >>As per Device Tree, so this is the new node introduced in the device tree > > >>to > > >>support TPM. And the fields are defined maintaining the requirements from > > >>ePAPR specification. > > > > > >What is ePAPR specification? Can you provide a reference? > > > > PowerPC systems are based on device tree and derive that from ePAPR > > specification, link below for ePAPR specification.. > > > > https://www.power.org/documentation/power-org-standard-for-embedded-power-architecture-platform-requirements-epapr-v1-1-2/ > > Thanks. I'll check that through when I review the next version.
This specification did not define the TPM binding for DT. I searched with "tpm" keyword from the specification. Why did you give that link? You earlier said that fields in TPM binding are derived from that specification. For me this looks like total nonsense. /Jarkko ------------------------------------------------------------------------------ _______________________________________________ tpmdd-devel mailing list tpmdd-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/tpmdd-devel
