On 01/13/2017 01:09 PM, Stefan Berger wrote:
> On 01/11/2017 02:54 AM, Nayna Jain wrote:
>> Unlike the device driver support for TPM 1.2, the TPM 2.0 does
>> not support the securityfs pseudo files for displaying the
>> firmware event log.
>>
>> This patch enables support for providing the TPM 2.0 event log in
>> binary form. TPM 2.0 event log supports a crypto agile format that
>> records multiple digests, which is different from TPM 1.2. This
>> patch enables the tpm_bios_log_setup for TPM 2.0 and adds the
>> event log parser which understand the TPM 2.0 crypto agile format.
>>
>> Signed-off-by: Nayna Jain <na...@linux.vnet.ibm.com>
>> ---
>> drivers/char/tpm/Makefile | 2 +-
>> .../char/tpm/{tpm_eventlog.c => tpm1_eventlog.c} | 35 ++--
>> drivers/char/tpm/tpm2_eventlog.c | 203
>> +++++++++++++++++++++
>> drivers/char/tpm/tpm_acpi.c | 3 +
>> drivers/char/tpm/tpm_eventlog.h | 63 +++++++
>> 5 files changed, 291 insertions(+), 15 deletions(-)
>> rename drivers/char/tpm/{tpm_eventlog.c => tpm1_eventlog.c} (95%)
>> create mode 100644 drivers/char/tpm/tpm2_eventlog.c
>>
>>
>> diff --git a/drivers/char/tpm/tpm_acpi.c b/drivers/char/tpm/tpm_acpi.c
>> index b7718c9..169edf3 100644
>> --- a/drivers/char/tpm/tpm_acpi.c
>> +++ b/drivers/char/tpm/tpm_acpi.c
>> @@ -54,6 +54,9 @@ int tpm_read_log_acpi(struct tpm_chip *chip)
>> u64 len, start;
>> struct tpm_bios_log *log;
>>
>> + if (chip->flags & TPM_CHIP_FLAG_TPM2)
>> + return -ENODEV;
>> +
>
>
> Works with SeaBIOS when this check is disabled.
>
-> Tested-by: Stefan Berger <stef...@linux.vnet.ibm.com>
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