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Wed, 16 Sep 2026 02:02:56 -0700 (PDT) X-Received: by 2002:a05:6820:81d7:b0:6c0:e39e:c22d with SMTP id 006d021491bc7-6c7d48ef8ffmr1847014eaf.53.1789549375491; Wed, 16 Sep 2026 02:02:55 -0700 (PDT) Received: from [10.218.31.125] ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-33bf5aa1e38sm6413732eec.16.2026.09.16.02.02.51 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 16 Sep 2026 02:02:54 -0700 (PDT) Message-ID: <2e5278bc-5f11-43f3-8e9e-b70786a697b0@oss.qualcomm.com> Date: Wed, 16 Sep 2026 14:32:49 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 0/3] Add TPM support via Qualcomm TEE TPM TA To: Amirreza Zarrabi , Jens Wiklander , Sumit Garg , Peter Huewe , Jarkko Sakkinen , Jason Gunthorpe Cc: linux-arm-msm@vger.kernel.org, op-tee@lists.trustedfirmware.org, linux-kernel@vger.kernel.org, linux-integrity@vger.kernel.org References: <20260907-tpm_qcom_driver-v2-0-71a6b1752da8@oss.qualcomm.com> Content-Language: en-US From: Kuldeep Singh In-Reply-To: <20260907-tpm_qcom_driver-v2-0-71a6b1752da8@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTE2MDExNiBTYWx0ZWRfXzVPAMayC0C6s cVo9D9O/GuU9+ESGUmnB7Il41yEHFuJzBSnlUMtkqNB1ap9H2XxULpmdkkA6UE2uyaB987X1Acy 7bZoUwtWlJsNqbAiVCWieT9Pu62F1e91akYMrOc2q/tfS+VJOR/VllYDgnMnKeX6A64cxyGsYs6 d6PxXzaMZ4JMBf54ge5Oku6BW7geiqV+43PBjr+SYKVcEVyEPIQIzucVPHp5IFQwNBW+Ak52WpD UirFv46JBNmNnFNyPnoPAmnR98qEotf1XGxsDF5uJkqfsZoLARrw+YADFyduluqMY64su2ng7oY isMAbfOh0H1Fxw0kXEbgNAAemCIOcEIOdC+6HQ3BGsSEkIRXy5mODUJkbYZJDWMDJ0zp83nvCdm wte783bpAPTKYpODPd7/6AQLVUcAuLbCoULFrLtzmUnuybGSByCwtpXMtu95mjWR0e2ST99ZCIE Vb3mJvWiGkr7BTcJ51Q== X-Proofpoint-GUID: CkJ08imGOjg_nvom5J1GsxUOJlZr1osj X-Proofpoint-Spam-Info: AW1haW4tMjYwOTE2MDExNiBTYWx0ZWRfX8jVA0NbYU+7K yPZFTDNGnFIaX69CVrNf000J2zIx1JKPXwEYc+xdUXBPzVv/yNiQzG+1GTSXuLER+FJ1GMfDlJO MHW3+zeSkrYyR35HrnJyygWendecxUk= X-Proofpoint-ORIG-GUID: CkJ08imGOjg_nvom5J1GsxUOJlZr1osj X-Authority-Analysis: v=2.4 cv=F/DC5ahN c=1 sm=1 tr=0 ts=6aaa5b40 cx=c_pps a=lkkFf9KBb43tY3aOjL++dA==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=DJpcGTmdVt4CTyJn9g5Z:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=QTb_0JKWY7oM6lVZCfEA:9 a=QEXdDO2ut3YA:10 a=k4UEASGLJojhI9HsvVT1:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-09-15_05,2026-09-15_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 adultscore=0 bulkscore=0 clxscore=1015 spamscore=0 phishscore=0 impostorscore=0 suspectscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609160116 On 07-09-2026 14:58, 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-b8a8fcbe4211@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 Hi Jarkko, Kindly let me know for any review comments/feedback so that we can align and shape next revision if needed. Many thanks! -- Regards Kuldeep