Re: [PATCH v3 0/2] tpm: OP-TEE transport core for discrete and firmware TPMs

[Jorge Ramirez <jorge.ramirez@oss.qualcomm.com>]

On 11/11/26 22:59:33, Jorge Ramirez-Ortiz wrote:
> This adds a driver for a discrete TPM that OP-TEE owns and the normal
> world cannot reach directly, and factors the shared OP-TEE TEE transport
> into a small core so the existing fTPM driver uses it too:
> 
>   - a transport core shared by the OP-TEE TPM front-ends;
>   - a new discrete TPM front-end;
>   - the fTPM driver converted onto the core, keeping its name, its
>     platform/OF binding and its shutdown path.
> 
> Patch 1 is the feature; patch 2 is the fTPM conversion that justifies the
> core. Both front-ends were exercised on the Qualcomm Lemans EVK over the
> shared core: the discrete ST33 TPM (patch 1) and the MS-TPM-20 firmware
> TPM TA (patch 2), each presenting a working /dev/tpm0 (tpm2_getrandom,
> PCR read). The fTPM TA is the same MS-TPM-20 reference the existing
> tpm_ftpm_tee platforms use.
> 
> This is the normal-world half. The secure-world OP-TEE support it binds
> to -- the in-core TPM2 SPI (TIS) driver and the mediator pseudo TA that
> relays commands to it -- is under review separately:
> 
>   OP-TEE support: https://github.com/OP-TEE/optee_os/pull/8155
>   locality 4:     https://github.com/OP-TEE/optee_os/issues/8160
>                   (design follow-up: the secure world policing
>                   normal-world locality access to the shared chip)
> 
> Build and test it on the Qualcomm Lemans EVK (a discrete ST33 TPM on
> SPI, owned by OP-TEE):
> 
>   https://qualcomm-linux.github.io/qcom-buildroot/lemans/quick-start.html

The above was the wrong link, please use this one:

https://qualcomm-linux.github.io/qcom-buildroot/lemans/devel_lemans_security_dtpm.html