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Message-ID: <20260106103713.onhn2fpge5mwoy23@hu-mojha-hyd.qualcomm.com>
Date: Tue, 6 Jan 2026 16:07:13 +0530
From: Mukesh Ojha <mukesh.ojha@....qualcomm.com>
To: Bjorn Andersson <andersson@...nel.org>,
Mathieu Poirier <mathieu.poirier@...aro.org>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Manivannan Sadhasivam <mani@...nel.org>,
Konrad Dybcio <konradybcio@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, linux-remoteproc@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: Re: [PATCH v10 00/14] Peripheral Image Loader support for Qualcomm
SoCs running Linux host at EL2
On Mon, Jan 05, 2026 at 06:52:48PM +0530, Mukesh Ojha wrote:
[...]
Bjorn,
Would you be picking this for next merge window ?
-Mukesh
>
> Changes in v9: https://lore.kernel.org/lkml/20251121-kvm_rproc_v8-v8-0-8e8e9fb0eca0@oss.qualcomm.com/
> - Addressed comment from Bjorn and Konrad on resource table SMC call
> logic.
> - Removed comment from overlay file.
> - Changed flag has_iommu to use_tzmem.
> - Added R-b tag on some patches.
>
> Changes in v8: https://lore.kernel.org/lkml/20251113-kvm-rproc-v7-v7-0-df4910b7c20a@oss.qualcomm.com/
> - Addressed suggestion from Stephen which was regarding commit message(9/14),
> debug log(12/14) suggestion, and return type change(4/14).
> - Added R-b tag on 10/14 .
>
> Changes in v7: https://lore.kernel.org/lkml/20251104-kvm_rproc_v6-v6-0-7017b0adc24e@oss.qualcomm.com/
> - Addressed Bryan suggestion to modify commit message on 2/14 .
> - Repharsed commit message based on Krzysztof comment made on 1/14.
> - Addressed Konrad suggestion
> o To remove pas metadata data structure.
> o Added his suggestion on adding retry in rsc_table SCM call.
> o Added his rephrased version of comment made in 12/14
>
> Changes in v6: https://lore.kernel.org/lkml/20251013-kvm_rprocv5-v5-0-d609ed766061@oss.qualcomm.com/
> - Added comments made by Bryan to save some cycles and added in 2/14
> which could change patch order.
> - Renamed qcom_scm_pas_context_init to devm_qcom_scm_pas_context_init()
> - Replaced devm_kzalloc with kzalloc for output_rt in scm function as
> remoteproc framework does not usage devm_ api for resource table
> pointer which is cause mem-abort issue start/stop test.
> - Removed union usage and redundant code from qcom_scm_pas_prep_and_init_image().
>
> Changes in v5: https://lore.kernel.org/lkml/20251007-kvm_rprocv4_next-20251007-v4-0-de841623af3c@oss.qualcomm.com/
> - Replaced minitems with maxitems.
> - Addressed comments made by Bryan, Mani and Konrad.
> - Fixed some of highlighted issues in v4.
> - Added a new patch which removes qcom_mdt_pas_init() from exported
> symbol list.
> - Slight change in v4's 5/12, so that it does use qcom_mdt_pas_load()
> directly while it should use in the commit where it gets introduced.
> Hence, reordered the patches a bit like v4 5/12 comes early before
> 4/12.
>
> Changes in v4: https://lore.kernel.org/lkml/20250921-kvm_rproc_pas-v3-0-458f09647920@oss.qualcomm.com/
> - Fixed kernel robot warning/errors.
> - Reworded some of the commit log, code comment as per suggestion from Bryan.
> - Added support of gpdsp0 and gpdsp1 and disabled iris node.
> - Add R-b tag to some of the reviewed patches.
> - Rename struct qcom_scm_pas_cxt to qcom_scm_pas_context.
>
> Changes in v3: https://lore.kernel.org/lkml/20250819165447.4149674-1-mukesh.ojha@oss.qualcomm.com/
> - Dropped video subsystem enablement for now, could add it in future
> or on a separate series.
> - Addressed most of the suggestion from Stephen and Bryan like some
> remoteproc code checking resource table presence or right error
> code propagation above the layer.
> - Added leman-el2 overlay file.
> - Added missed iommus binding which was missed last series.
> - Separated qcom_mdt_pas_load() patch and its usage.
> - Patch numbering got changed compared to last version
>
> Changes in v2: https://lore.kernel.org/lkml/20241004212359.2263502-1-quic_mojha@quicinc.com/
> - A lot has changed from the V1 and a fresh look would be preferred.
> - Removed approach where device tree contain devmem resources in
> remoteproc node.
> - SHMbridge need to created for both carveout and metadata memory
> shared to TZ in a new way.
> - Now, resource table would be given by SMC call which need to mapped
> along with carveout before triggering _auth_and_reset_.
> - IOMMU properties need to be added to firmware devices tree node when Linux
> control IOMMU.
>
> ---
> Mukesh Ojha (14):
> dt-bindings: remoteproc: qcom,pas: Add iommus property
> firmware: qcom_scm: Remove redundant piece of code
> firmware: qcom_scm: Rename peripheral as pas_id
> firmware: qcom_scm: Introduce PAS context allocator helper function
> remoteproc: pas: Replace metadata context with PAS context structure
> soc: qcom: mdtloader: Add PAS context aware qcom_mdt_pas_load() function
> soc: qcom: mdtloader: Remove qcom_mdt_pas_init() from exported symbols
> firmware: qcom_scm: Add a prep version of auth_and_reset function
> firmware: qcom_scm: Refactor qcom_scm_pas_init_image()
> firmware: qcom_scm: Add SHM bridge handling for PAS when running without QHEE
> firmware: qcom_scm: Add qcom_scm_pas_get_rsc_table() to get resource table
> remoteproc: pas: Extend parse_fw callback to fetch resources via SMC call
> remoteproc: qcom: pas: Enable Secure PAS support with IOMMU managed by Linux
> arm64: dts: qcom: Add EL2 overlay for Lemans
>
> .../bindings/remoteproc/qcom,pas-common.yaml | 3 +
> arch/arm64/boot/dts/qcom/Makefile | 10 +
> arch/arm64/boot/dts/qcom/lemans-el2.dtso | 35 ++
> drivers/firmware/qcom/qcom_scm.c | 380 ++++++++++++++++++---
> drivers/firmware/qcom/qcom_scm.h | 1 +
> drivers/remoteproc/qcom_q6v5_pas.c | 165 +++++++--
> drivers/soc/qcom/mdt_loader.c | 51 ++-
> include/linux/firmware/qcom/qcom_scm.h | 30 +-
> include/linux/soc/qcom/mdt_loader.h | 22 +-
> 9 files changed, 581 insertions(+), 116 deletions(-)
> ---
> base-commit: f8f97927abf7c12382dddc93a144fc9df7919b77
> change-id: 20260105-kvmrprocv10-dea2a3f00210
>
> Best regards,
> --
> -Mukesh Ojha
>
--
-Mukesh Ojha
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