On Mon, Sep 07, 2026 at 02:58:40PM +0530, Kuldeep Singh wrote: > Qualcomm platforms with a discrete TPM (dTPM) talked to it directly over > a non-secure SPI channel from the kernel. Arm's Base Boot Security > Requirements (BBSR) v1.4 require that access to go through TrustZone > instead, so on affected Qualcomm platforms the TPM 2.0 instance is now > fronted by a Trusted Application (TA) running inside Qualcomm's Trusted > Execution Environment (QTEE), which talks to the dTPM (or implements an > fTPM) on the kernel's behalf. > > This series adds a kernel driver for that TA, built on the QCOMTEE > object-IPC transport (drivers/tee/qcomtee/) already used to reach other > QTEE services. > > This patch series functionally depends on below(patch 5/6 specifically) > for qtee service discovery. > - > https://lore.kernel.org/lkml/20260722-qcom_uefisecapp_migrate_qcomtee-v2-0-b8a8fcbe4...@oss.qualcomm.com/ > > Tested on Glymur-crd target with tpm2-tools utility. > > Validations: > - Get capabilities > - Random number generator > - RSA key creation, encryption and decryption. > > Signed-off-by: Kuldeep Singh <[email protected]> > --- > Changes in v2: > - Use QCOMTEE_TPM_UID as 81 for service discovery in patch 1. > - Use FIELD_GET, zero initialised array and log improvement (Konrad) > - Improve commit title and other fixes (Jarkko) > - Split MAINTAINERS entry as separate patch. > - Link to v1: > https://patch.msgid.link/[email protected] > > To: Amirreza Zarrabi <[email protected]> > To: Jens Wiklander <[email protected]> > To: Sumit Garg <[email protected]> > To: Peter Huewe <[email protected]> > To: Jarkko Sakkinen <[email protected]> > To: Jason Gunthorpe <[email protected]> > To: Kuldeep Singh <[email protected]> > Cc: [email protected] > Cc: [email protected] > Cc: [email protected] > Cc: [email protected] > > --- > Kuldeep Singh (3): > tee: qcomtee: Register qcom.tz.tpm service for discovery > tpm: Introduce Qualcomm TPM driver > MAINTAINERS: Add Qualcomm TPM driver entry > > MAINTAINERS | 7 + > drivers/char/tpm/Kconfig | 9 + > drivers/char/tpm/Makefile | 1 + > drivers/char/tpm/tpm_qcom.c | 354 > ++++++++++++++++++++++++++++++++++++++ > drivers/char/tpm/tpm_qcom.h | 83 +++++++++ > drivers/tee/qcomtee/call.c | 4 +- > drivers/tee/qcomtee/qcomtee_msg.h | 2 + > 7 files changed, 459 insertions(+), 1 deletion(-) > --- > base-commit: f3e6330d7fe42b204af05a2dbc68b379e0ad179e > change-id: 20260831-tpm_qcom_driver-d21c720e73b2 > prerequisite-change-id: > 20260408-qcom_uefisecapp_migrate_qcomtee-13869d45e014:v2 > prerequisite-patch-id: 4dc81445c9baf36f420da8c2e2bed96e71b31a5b > prerequisite-patch-id: b487dfe2fbc076f4815dc6c73b9e68b0b78c961f > prerequisite-patch-id: c5df2b3696520a96f95b2d3535ed84cdc21cc315 > prerequisite-patch-id: bbdd5327c15aeaa99ce9b74bab324a98f084ed48 > prerequisite-patch-id: 07d9c4e9fe9fd61f60e3f35b30b9d81716f0734c > prerequisite-patch-id: 10ff88d87586f21f3cff3f72dbd21c27adbfbbcc > > Best regards, > -- > Kuldeep Singh <[email protected]> >
Causes merge conflicts with my tree when applied with git am (actually b4 shazam). BR, Jarkko
