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Mon, 07 Sep 2026 02:47:37 -0700 (PDT) X-Received: by 2002:a17:90b:3a50:b0:38e:4cb:51f with SMTP id 98e67ed59e1d1-39b26101576mr37063367a91.11.1788774457148; Mon, 07 Sep 2026 02:47:37 -0700 (PDT) Received: from [10.218.31.125] ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-1432435ec2bsm23169442c88.3.2026.09.07.02.47.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 07 Sep 2026 02:47:36 -0700 (PDT) Message-ID: <591315ce-37d0-40e4-8bfb-55206578f0f4@oss.qualcomm.com> Date: Mon, 7 Sep 2026 15:17:31 +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 0/2] 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: <20260831-tpm_qcom_driver-v1-0-6f16fa6924fa@oss.qualcomm.com> Content-Language: en-US From: Kuldeep Singh In-Reply-To: <20260831-tpm_qcom_driver-v1-0-6f16fa6924fa@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: v1eWOnXEo7PBqKfWfI-0uD_zoDwWxf7L X-Proofpoint-Spam-Info: AW1haW4tMjYwOTA3MDEwNyBTYWx0ZWRfX/y7LCNS8HN26 9NPNxB7zjdDziSHG3VTr6S6U82KdzskDEVVhffnnrMDs6PIZDBTpYhymrY71EwVy5N5QXXpz1XT ITB22jNCp9kbnnuOoOY24AX/otvmjmY= X-Authority-Analysis: v=2.4 cv=eKwjSnp1 c=1 sm=1 tr=0 ts=6a9e883a cx=c_pps a=cmESyDAEBpBGqyK7t0alAg==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=YMgV9FUhrdKAYTUUvYB2:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=QTb_0JKWY7oM6lVZCfEA:9 a=QEXdDO2ut3YA:10 a=1OuFwYUASf3TG4hYMiVC:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTA3MDEwNyBTYWx0ZWRfX/g3+rHuWLW4m GMhcXcblZx8GK90uOr2Q55I7Zb5W5ugO4ndQrIgctk4MZdtGOsHNTu+yk4dJ0cFxLXm9k9spFnz /g+ONwpPH1BNzyxwVKkP04v3ZQUtHQ3BB6P+qMqs6FVCflRg8JcPp2j8F8DIaAL6ox7hJCJnA1I 5N5jn1EEJsHkT2rq6f32BdIJMqzPtrRYmpKK7oh7iiWkCkEEBkOKr5BiqM3m3QsHfo43J0bzX+m dF1cg3iwn75Byuh+yDuQ/fcieiuGmNJkJvfc8L712qd5pB/7PV4mmnSdFodmwFrwk6yRDwtJYej Ed2nmGssDSE7DeXdKZ3pBGd9B+f5TTZuwDmIG/GUhDEcchK3o5qo+OoCYkjq+q33HcKNhnYP7ZC LEH20GIaXNdngVfVOw7VPsztSQSho/xh6qKT256nQfU/pu/dEYZgF7z6TUkF350dZWyZvxjAC3A HvOuYLn8U8qAbB3+QhQ== X-Proofpoint-GUID: v1eWOnXEo7PBqKfWfI-0uD_zoDwWxf7L 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=2026-09-07_02,2026-09-07_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 lowpriorityscore=0 malwarescore=0 priorityscore=1501 suspectscore=0 clxscore=1015 adultscore=0 spamscore=0 phishscore=0 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2609070107 On 31-08-2026 15:12, 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 Sent v2 for this series. https://lore.kernel.org/linux-arm-msm/20260907-tpm_qcom_driver-v2-0-71a6b1752da8@oss.qualcomm.com/ Regards Kuldeep