tpm: TPM 2.0 baseline support
TPM 2.0 devices are separated by adding a field 'flags' to struct tpm_chip and defining a flag TPM_CHIP_FLAG_TPM2 for tagging them. This patch adds the following internal functions: - tpm2_get_random() - tpm2_get_tpm_pt() - tpm2_pcr_extend() - tpm2_pcr_read() - tpm2_startup() Additionally, the following exported functions are implemented for implementing TPM 2.0 device drivers: - tpm2_do_selftest() - tpm2_calc_ordinal_durations() - tpm2_gen_interrupt() The existing functions that are exported for the use for existing subsystems have been changed to check the flags field in struct tpm_chip and use appropriate TPM 2.0 counterpart if TPM_CHIP_FLAG_TPM2 is est. The code for tpm2_calc_ordinal_duration() and tpm2_startup() were originally written by Will Arthur. Signed-off-by:Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by:
Will Arthur <will.c.arthur@intel.com> Reviewed-by:
Jasob Gunthorpe <jason.gunthorpe@obsidianresearch.com> Reviewed-by:
Stefan Berger <stefanb@linux.vnet.ibm.com> Reviewed-by:
Peter Huewe <peterhuewe@gmx.de> Tested-by:
Peter Huewe <peterhuewe@gmx.de> [phuewe: Fixed copy paste error * 2] Signed-off-by:
Peter Huewe <peterhuewe@gmx.de>
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313d21ee
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