[PATCH 1/4 v4] tpm: add a function that performs selftest + startup

[Simon Glass]

On Sat, 18 Feb 2023 at 08:27, Ilias Apalodimas
<ilias.apalodimas at linaro.org> wrote:
>
> As described in [0] if a command requires use of an untested algorithm
> or functional module, the TPM performs the test and then completes the
> command actions.
>
> Since we don't check for TPM_RC_NEEDS_TEST (which is the return code of
> the TPM in that case) and even if we would, it would complicate our TPM
> code for no apparent reason,  add a wrapper function that performs both
> the selftest and the startup sequence of the TPM.
>
> It's worth noting that this is implemented on TPMv2.0.  The code for
> 1.2 would look similar,  but I don't have a device available to test.
>
> [0]
> https://trustedcomputinggroup.org/wp-content/uploads/TPM-Rev-2.0-Part-1-Architecture-01.07-2014-03-13.pdf
> §12.3 Self-test modes
>
> Signed-off-by: Ilias Apalodimas <ilias.apalodimas at linaro.org>
> ---
> Changes since v3:
> - Limit comments to 80 columns
> - drop extra lines from comments
>  include/tpm-v2.h  | 16 ++++++++++++++++
>  include/tpm_api.h |  8 ++++++++
>  lib/tpm-v2.c      | 25 +++++++++++++++++++++++++
>  lib/tpm_api.c     |  8 ++++++++
>  4 files changed, 57 insertions(+)

Reviewed-by: Simon Glass <sjg at chromium.org>

(with my two patches on top)