tpm: TPM 2.0 CRB Interface

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tpm_crb is a driver for TPM 2.0 Command Response Buffer (CRB) Interface
as defined in PC Client Platform TPM Profile (PTP) Specification.

Only polling and single locality is supported as these are the limitations
of the available hardware, Platform Trust Techonlogy (PTT) in Haswell
CPUs.

The driver always applies CRB with ACPI start because PTT reports using
only ACPI start as start method but as a result of my testing it requires
also CRB start.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jasob Gunthorpe <jason.gunthorpe@obsidianresearch.com>
Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>

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This commit is contained in:

Jarkko Sakkinen 2014-12-12 11:46:39 -08:00 • committed by Peter Huewe

parent 7a1d7e6dd7

commit 30fc8d138e

4 changed files with 367 additions and 0 deletions

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9

drivers/char/tpm/Kconfig

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1

drivers/char/tpm/Makefile

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3

drivers/char/tpm/tpm-interface.c

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354

drivers/char/tpm/tpm_crb.c

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