This commit implements grub_tcg2_cap_pcr() for ieee1275 with the
firmware function, 2hash-ext-log, to extend the target PCR with an
EV_SEPARATOR event and record the event into the TPM event log.
To avoid duplicate code, ibmvtpm_2hash_ext_log() is moved to tcg2.c
and exported as a global function.
Signed-off-by: Gary Lin <glin@suse.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Follow recent extensions of EFI support providing a TCG2 driver with
a public API for getting the maximum TPM command size and passing a TPM
command through to the TPM 2. Implement this functionality using ieee1275
PowerPC firmware API calls. Move tcg2.c into the TCG2 driver.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Move tpm_get_tpm_version() into grub_ieee1275_tpm_init() and invalidate
grub_ieee1275_tpm_ihandle in case no TPM 2 could be detected. Try the
initialization only once so that grub_tpm_present() will always return
the same result. Use the grub_ieee1275_tpm_ihandle as indicator for an
available TPM instead of grub_ieee1275_tpm_version, which can now be
removed.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Move common initialization functions from the ibmvtpm driver module into
tcg2.c that will be moved into the new TCG2 driver in a subsequent patch.
Make the functions available to the ibmvtpm driver as public functions
and variables.
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
