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/ I have also shared TPM2.0 device tree kernel documentation as Patch v2 2/3. > > /Jarkko > ------------------------------------------------------------------------------ _______________________________________________ tpmdd-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/tpmdd-devel
