Linux kernel stable tree https://git.landau.one/pub/scm/linux/kernel/git/stable/linux.git/atom?h=master 2026-07-11T16:31:11+00:00 2026-07-11T16:31:11+00:00 Yuvaraj Ranganathan yuvaraj.ranganathan@oss.qualcomm.com 2026-05-22T06:39:00+00:00 urn:sha1:41329e72363c02facfeae063ef304aa7ced68c3b Wire the five tracepoints defined in qcom_scm_trace.h into the SMC execution path by including the header with CREATE_TRACE_POINTS. Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com> Signed-off-by: Yuvaraj Ranganathan <yuvaraj.ranganathan@oss.qualcomm.com> Link: https://lore.kernel.org/r/20260522-scm-tracepoints-v2-2-e27cdbe0c585@oss.qualcomm.com Signed-off-by: Bjorn Andersson <andersson@kernel.org> 2026-07-09T19:12:58+00:00 Sumit Garg sumit.garg@oss.qualcomm.com 2026-07-02T11:58:19+00:00 urn:sha1:b6f7978da0c4d26fe465aa6634f5a0b48f900de0 Add support for Peripheral Authentication Service (PAS) driver based on TEE bus with OP-TEE providing the backend PAS service implementation. The TEE PAS service ABI is designed to be extensible with additional API as PTA_QCOM_PAS_CAPABILITIES. This allows to accommodate any future extensions of the PAS service needed while still maintaining backwards compatibility. Reviewed-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com> Tested-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com> # Lemans Reviewed-by: Harshal Dev <harshal.dev@oss.qualcomm.com> Tested-by: Vignesh Viswanathan <vignesh.viswanathan@oss.qualcomm.com> # IPQ9650 Signed-off-by: Sumit Garg <sumit.garg@oss.qualcomm.com> Link: https://lore.kernel.org/r/20260702115835.167602-4-sumit.garg@kernel.org Signed-off-by: Bjorn Andersson <andersson@kernel.org> 2026-07-09T19:12:58+00:00 Sumit Garg sumit.garg@oss.qualcomm.com 2026-07-02T11:58:17+00:00 urn:sha1:08314e7c2c38b9ae6a5e01c58ed10a950859404d Qcom platforms has the legacy of using non-standard SCM calls splintered over the various kernel drivers. These SCM calls aren't compliant with the standard SMC calling conventions which is a prerequisite to enable migration to the FF-A specifications from Arm. OP-TEE as an alternative trusted OS to Qualcomm TEE (QTEE) can't support these non-standard SCM calls. And even for newer architectures using S-EL2 with Hafnium support, QTEE won't be able to support SCM calls either with FF-A requirements coming in. And with both OP-TEE and QTEE drivers well integrated in the TEE subsystem, it makes further sense to reuse the TEE bus client drivers infrastructure. The added benefit of TEE bus infrastructure is that there is support for discoverable/enumerable services. With that client drivers don't have to manually invoke a special SCM call to know the service status. So enable the generic Peripheral Authentication Service (PAS) provided by the firmware. It acts as the common layer with different TZ backends plugged in whether it's an SCM implementation or a proper TEE bus based PAS service implementation. Reviewed-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com> Tested-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com> # Lemans Reviewed-by: Harshal Dev <harshal.dev@oss.qualcomm.com> Tested-by: Vignesh Viswanathan <vignesh.viswanathan@oss.qualcomm.com> # IPQ9650 Signed-off-by: Sumit Garg <sumit.garg@oss.qualcomm.com> Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com> Link: https://lore.kernel.org/r/20260702115835.167602-2-sumit.garg@kernel.org Signed-off-by: Bjorn Andersson <andersson@kernel.org> 2024-06-23T21:08:04+00:00 Bartosz Golaszewski bartosz.golaszewski@linaro.org 2024-05-27T12:54:52+00:00 urn:sha1:84f5a7b67b61bfeb0a939ddc5eca8586cae101de We have several SCM calls that require passing buffers to the TrustZone on top of the SMC core which allocates memory for calls that require more than 4 arguments. Currently every user does their own thing which leads to code duplication. Many users call dma_alloc_coherent() for every call which is terribly unperformant (speed- and size-wise). Provide a set of library functions for creating and managing pools of memory which is suitable for sharing with the TrustZone, that is: page-aligned, contiguous and non-cachable as well as provides a way of mapping of kernel virtual addresses to physical space. Make the allocator ready for extending with additional modes of operation which will allow us to support the SHM bridge safety mechanism once all users convert. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Reviewed-by: Andrew Halaney <ahalaney@redhat.com> Tested-by: Andrew Halaney <ahalaney@redhat.com> # sc8280xp-lenovo-thinkpad-x13s Tested-by: Deepti Jaggi <quic_djaggi@quicinc.com> #sa8775p-ride Reviewed-by: Elliot Berman <quic_eberman@quicinc.com> Link: https://lore.kernel.org/r/20240527-shm-bridge-v10-2-ce7afaa58d3a@linaro.org Signed-off-by: Bjorn Andersson <andersson@kernel.org> 2023-10-22T16:14:54+00:00 Bartosz Golaszewski bartosz.golaszewski@linaro.org 2023-10-17T09:27:18+00:00 urn:sha1:bdac188ec3c71800dd8419620224ee74ef37732a We're getting more and more qcom specific .c files in drivers/firmware/ and about to get even more. Create a separate directory for Qualcomm firmware drivers and move existing sources in there. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Acked-by: Elliot Berman <quic_eberman@quicinc.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com> Tested-by: Andrew Halaney <ahalaney@redhat.com> # sc8280xp-lenovo-thinkpad-x13s Link: https://lore.kernel.org/r/20231017092732.19983-2-brgl@bgdev.pl Signed-off-by: Bjorn Andersson <andersson@kernel.org>