Re: [PATCH v12 0/6] Add new driver for WCSS secure PIL loading

[Vignesh Viswanathan <vignesh.viswanathan@oss.qualcomm.com>]

Hi Bjorn,

A gentle reminder to review this series. All the patches have picked
up R-b tags. If it looks okay to you, could you please help pick
it up in the current merge window.

Thanks
Vignesh

On 5/5/2026 3:53 PM, Varadarajan Narayanan wrote:
> As discussed in [4] posting this series after dropping IPQ5424 support
> to remove dependency on Sricharan's tmel-qmp mailbox driver series v4 [1].
> 
> Imported from 20251215-ipq5018-wifi-v7-0-ec4adba941b5@outlook.com.
> 
> Imported from f20250417061245.497803-1-gokul.sriram.p@oss.qualcomm.com
> I've resumed Gokul's work as the last submission dates back April 2025.
> 
> - Secure PIL is signed, firmware images which only TrustZone (TZ)
>   can authenticate and load. Linux kernel will send a request to TZ to
>   authenticate and load the PIL images.
> 
> - When secure PIL support was added to the existing wcss PIL driver
>   earlier in [2], Bjorn suggested not to overload the existing WCSS
>   rproc driver, instead post a new driver for PAS based IPQ WCSS driver.
>   This series adds a new secure PIL driver for the same.
> 
> - Also adds changes to scm to pass metadata size as required for IPQ5332,
>   reposted from [3].
> 
> [1]
> https://patchwork.kernel.org/project/linux-arm-msm/cover/20250327181750.3733881-1-quic_srichara@quicinc.com/
> 
> [2]
> https://patchwork.kernel.org/project/linux-arm-msm/patch/1611984013-10201-3-git-send-email-gokulsri@codeaurora.org/
> 
> [3]
> https://patchwork.kernel.org/project/linux-arm-msm/patch/20240820055618.267554-6-quic_gokulsri@quicinc.com/
> 
> [4]
> https://lore.kernel.org/linux-arm-msm/aUN7Aer%2FGG1d5Om9@hu-varada-blr.qualcomm.com/
> 
> Changes in v12:
> 	- No code change
> 	- Rebase to ToT
> 	- Change quicinc mail ids to oss.qualcomm.com mail ids
> 	- Link to v11: https://lore.kernel.org/linux-arm-msm/20260326043320.2507890-1-varadarajan.narayanan@oss.qualcomm.com/
> 
> Changes in v11:
> 	- Add R-b tags
> 	- Rebase the first patch ("firmware: qcom_scm: ipq5332: add support to pass metadata size") to top of tree
> 	- No change in other patches
> 	- Link to v10: https://lore.kernel.org/linux-arm-msm/20260113092021.1887980-1-varadarajan.narayanan@oss.qualcomm.com/
> 
> Changes in v10:
> 	- Add R-b tags
> 	- Remove unused fields from 'struct wcss_sec'
> 	- Remove glink and ssr subdev if wcss_sec_probe() fails
> 	- Link to v9: https://lore.kernel.org/linux-arm-msm/20260106105412.3529898-1-varadarajan.narayanan@oss.qualcomm.com/
> 
> Changes in v9:
> 	- Add R-b from Konrad for dts patches
> 	- Renamed qcom,wcss-sec-pil.yaml -> qcom,ipq5018-wcss-sec-pil.yaml
> 	- Restore clocks & clock-names in above yaml
> 	- Fix DCO on two patches
> 	- Link to v8: https://lore.kernel.org/linux-arm-msm/20251219031010.2919875-1-varadarajan.narayanan@oss.qualcomm.com/
> 
> Changes in v8:
> 	- Dropped Krzysztof's 'Reviewed-by' as the bindings file has changed significantly
> 		* IPQ5018 support added in v6
> 		* IPQ5424 support dropped in v8
> 		* Updated to use IPQ9574 as example
> 	- dt-bindings-check and dtbs-check passed
> 	- Dropped IPQ5424 support from drivers/remoteproc/qcom_q6v5_wcss_sec.c
> 	- Updated copyrights of drivers/remoteproc/qcom_q6v5_wcss_sec.c
> 	- Change 'qcom,smem-state-names' order to resolve dt-bindings-check error in ipq5018.dtsi
> 	- Dropped changes to ipq5424.dtsi
> 	- Link to v7: https://lore.kernel.org/linux-arm-msm/20251215-ipq5018-wifi-v7-0-ec4adba941b5@outlook.com/
> 
> Changes in v7:
> 	- correctly sorted QCOM_SCM_PIL_PAS_INIT_IMAGE_V2 by command ID
> 	- correctly sorted smp2p-wcss nodes in dtsi files
> 	- Link to v6: https://lore.kernel.org/r/20251208-ipq5018-wifi-v6-0-d0ce2facaa5f@outlook.com
> 
> Changes in v6:
> 	- added patch to fix IPC register offset for ipq5424
> 	- changed phandle description for mboxes property in dt-bindings
> 	- updated bindings to define the right clocks per SoC based on
> 	  compatible. Ran make dt_binding_check for validation of all
> 	  SoCs
> 	- use of more descriptive match data property (use_tmelcom) and
> 	  added a condition in wcss_start to not error out if tmelcom
> 	  isn't used
> 	- mitigated potential off-by-one
> 	- adopted use of of_reserved_mem_region_to_resource to acquire
> 	  memory-region resource
> 	- added driver support for ipq5018 SoC
> 	- corrected size of reg properties as per Konrad's comments
> 	- added patch to bring up Q6 in ipq5018 dtsi
> 	- Link to v5: https://lore.kernel.org/r/20250417061245.497803-1-gokul.sriram.p@oss.qualcomm.com
> 
> Changes in v5:
> 	- retained all the patches as in v3 and addressed comments in
> 	  v3.
> 	- reverted changes to dt-bindings done in v4 and retained as in
> 	  v3 and fixed firmware format from .mdt to .mbn and retained
> 	  reviewed-by.
> 	- dropped 2 patches in v4 that adds support for q6 dtb loading.
> 	  Will post them as a new series.
> 
> 	Following tests were done:
> 	- checkpatch
> 	- dt_binding_check and dtbs_check
> 	- Link to v4: https://lore.kernel.org/r/20250327181750.3733881-1-quic_srichara@quicinc.com
> 
> Changes in v4:
>         - changed q6 firmware image format from .mdt to .mbn
>         - corrected arrangement of variable assignemnts as per comments
>           in qcom_scm.c
>         - added scm call to get board machid
>         - added support for q6 dtb loading with support for additional
>           reserved memory for q6 dtb in .mbn format
>         - updated dt-bindings to include new dts entry qcom,q6-dtb-info
>           and additional item in memory-region for q6 dtb region.
>         - removed unnecessary dependency for QCOM_Q6V5_WCSS_SEC in
>           Kconfig
>         - removed unwanted header files in qcom_q6v5_wcss_sec.c
>         - removed repeated dtb parsing during runtime in qcom_q6v5_wcss_sec.c
>         - added required check for using tmelcom, if available. Enabled
>           fallback to scm based authentication, if tmelcom is unavailable.
>         - added necessary padding for 8digt hex address in dts
> 	- Link to v3: https://lore.kernel.org/r/20250107101320.2078139-1-quic_gokulsri@quicinc.com
> 
> 	Following tests were done:
> 	- checkpatch
> 	- kernel-doc
> 	- dt_binding_check and dtbs_check
> 
> Changes in v3:
>         - fixed copyright years and markings based on Jeff's comments.
>         - replaced devm_ioremap_wc() with ioremap_wc() in
>           wcss_sec_copy_segment().
>         - replaced rproc_alloc() and rproc_add() with their devres
>           counterparts.
>         - added mailbox call to tmelcom for secure image authentication
>           as required for IPQ5424. Added ipq5424 APCS comatible required.
>         - added changes to scm call to pass metadata size as required for
>           IPQ5332.
> 	- Link to v2: https://lore.kernel.org/r/20240829134021.1452711-1-quic_gokulsri@quicinc.com
> 
> Changes in v2:
>         - Removed dependency of this series to q6 clock removal series
>           as recommended by Krzysztof
> 	- Link to v1: https://lore.kernel.org/r/20240820085517.435566-1-quic_gokulsri@quicinc.com
> 
> George Moussalem (1):
>   arm64: dts: qcom: ipq5018: add nodes to bring up q6
> 
> Manikanta Mylavarapu (4):
>   firmware: qcom_scm: ipq5332: add support to pass metadata size
>   dt-bindings: remoteproc: qcom: document hexagon based WCSS secure PIL
>   arm64: dts: qcom: ipq5332: add nodes to bring up q6
>   arm64: dts: qcom: ipq9574: add nodes to bring up q6
> 
> Vignesh Viswanathan (1):
>   remoteproc: qcom: add hexagon based WCSS secure PIL driver
> 
>  .../remoteproc/qcom,ipq5018-wcss-sec-pil.yaml | 178 ++++++++++
>  arch/arm64/boot/dts/qcom/ipq5018.dtsi         |  64 ++++
>  arch/arm64/boot/dts/qcom/ipq5332.dtsi         |  64 +++-
>  arch/arm64/boot/dts/qcom/ipq9574.dtsi         |  60 +++-
>  drivers/firmware/qcom/qcom_scm.c              |  14 +-
>  drivers/firmware/qcom/qcom_scm.h              |   1 +
>  drivers/remoteproc/Kconfig                    |  19 +
>  drivers/remoteproc/Makefile                   |   1 +
>  drivers/remoteproc/qcom_q6v5_wcss_sec.c       | 325 ++++++++++++++++++
>  include/linux/remoteproc.h                    |   2 +
>  10 files changed, 723 insertions(+), 5 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/remoteproc/qcom,ipq5018-wcss-sec-pil.yaml
>  create mode 100644 drivers/remoteproc/qcom_q6v5_wcss_sec.c
> 
> 
> base-commit: 9d0d467c3572e93c5faa2e5906a8bbcd70b24efd