- Openamp-rp - lists.openampproject.org

[OpenAMP/open-amp] cfc300: virtio: remove deprecated VIRTIO_DRIVER/DEVICE_ONL...

by Arnaud Pouliquen

Branch: refs/heads/main Home: https://github.com/OpenAMP/open-amp Commit: cfc300505e120e7e5f595760de976ffc48100c43 https://github.com/OpenAMP/open-amp/commit/cfc300505e120e7e5f595760de976ffc… Author: Arnaud Pouliquen <arnaud.pouliquen(a)foss.st.com> Date: 2026-04-27 (Mon, 27 Apr 2026) Changed paths: M lib/include/openamp/virtio.h Log Message: ----------- virtio: remove deprecated VIRTIO_DRIVER/DEVICE_ONLY support The following configuration are deprecated since more than 2 years (v2024.05): - VIRTIO_DRIVER_ONLY - VIRTIO_DEVICE_ONLY Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen(a)foss.st.com> Commit: 89dea1d7a5eae5cc4e06ff4eda28896b06509baf https://github.com/OpenAMP/open-amp/commit/89dea1d7a5eae5cc4e06ff4eda28896b… Author: Arnaud Pouliquen <arnaud.pouliquen(a)foss.st.com> Date: 2026-04-27 (Mon, 27 Apr 2026) Changed paths: M lib/include/openamp/rpmsg_virtio.h Log Message: ----------- rpmsg: remove deprecated rpmsg_virtio API The following configuration are deprecated since more than 2 years (v2024.05): - rpmsg_virtio_get_status - rpmsg_virtio_get_features - rpmsg_virtio_read_config - virtio_write_config - rpmsg_virtio_create_virtqueues - rpmsg_virtio_delete_virtqueues Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen(a)foss.st.com> Compare: https://github.com/OpenAMP/open-amp/compare/00a3c0d3f754...89dea1d7a5ea To unsubscribe from these emails, change your notification settings at https://github.com/OpenAMP/open-amp/settings/notifications

4 months, 3 weeks

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[OpenAMP/libmetal] bce63e: cmake: Do not propagate compilation options to the...

by Arnaud Pouliquen

Branch: refs/heads/main Home: https://github.com/OpenAMP/libmetal Commit: bce63e013327796024852a65cc98e5a9c7a04d36 https://github.com/OpenAMP/libmetal/commit/bce63e013327796024852a65cc98e5a9… Author: Arnaud Pouliquen <arnaud.pouliquen(a)foss.st.com> Date: 2026-04-10 (Fri, 10 Apr 2026) Changed paths: M cmake/options.cmake Log Message: ----------- cmake: Do not propagate compilation options to the main project When libmetal is included in the main project using add_subdirectory(libmetal), using set_property(GLOBAL ...) propagates properties to the main project. This can cause build errors if warnings are treated as errors. Remove set_property(GLOBAL ...) calls from libmetal’s CMakeLists. Use only target_compile_options and target properties on libmetal’s own targets. The main project should determine its own compilation options. fix commit d077e286a437 ("cmake: set PROJECT_EC_FLAGS to be GLOBAL property") Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen(a)foss.st.com> Commit: 0678a811055cc9f042182aeabebadf021f138750 https://github.com/OpenAMP/libmetal/commit/0678a811055cc9f042182aeabebadf02… Author: Arnaud Pouliquen <arnaud.pouliquen(a)foss.st.com> Date: 2026-04-10 (Fri, 10 Apr 2026) Changed paths: M lib/system/zephyr/init.c Log Message: ----------- system: zephyr: fix build issue fix build error /github/workspace/lib/system/zephyr/init.c:18:52: error: unused parameter 'params' [-Werror=unused-parameter] 18 | int metal_sys_init(const struct metal_init_params *params) Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen(a)foss.st.com> Commit: 4a7fcfbbe450a2163b199cf3f601af2234c2575b https://github.com/OpenAMP/libmetal/commit/4a7fcfbbe450a2163b199cf3f601af22… Author: Arnaud Pouliquen <arnaud.pouliquen(a)foss.st.com> Date: 2026-04-10 (Fri, 10 Apr 2026) Changed paths: M test/system/zephyr/main.c Log Message: ----------- test: zephyr: fix build issue test/system/zephyr/main.c: In function 'metal_zephyr_allocate_memory': test/system/zephyr/main.c:33:23: error:comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Werror=sign-compare] 33 | for (i = 0; i < sizeof(block)/sizeof(block[0]); i++) { | ^ Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen(a)foss.st.com> Compare: https://github.com/OpenAMP/libmetal/compare/c65f40afd64c...4a7fcfbbe450 To unsubscribe from these emails, change your notification settings at https://github.com/OpenAMP/libmetal/settings/notifications

5 months, 1 week

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[OpenAMP/openamp-system-reference] 3a59cf: echo: embed legacy_apps build info into echo readm...

by Arnaud Pouliquen

Branch: refs/heads/main Home: https://github.com/OpenAMP/openamp-system-reference Commit: 3a59cf976e6426f750edfba750f659fd2c8e4258 https://github.com/OpenAMP/openamp-system-reference/commit/3a59cf976e6426f7… Author: Sipke Vriend <sipke(a)direktembedded.com> Date: 2026-03-31 (Tue, 31 Mar 2026) Changed paths: M examples/legacy_apps/examples/echo/README.rst Log Message: ----------- echo: embed legacy_apps build info into echo readme file sphinx, as used in readthedocs can embed an md page, so do that here for read the docs, but leave the relative link for anyone that comes across this page via github directly. Signed-off-by: Sipke Vriend <sipke(a)direktembedded.com> Commit: 07673d06a3f63d2a4d3a402892b865a8ebc7c76e https://github.com/OpenAMP/openamp-system-reference/commit/07673d06a3f63d2a… Author: Sipke Vriend <sipke(a)direktembedded.com> Date: 2026-03-31 (Tue, 31 Mar 2026) Changed paths: M examples/legacy_apps/README.md Log Message: ----------- legacy_apps: adjust readme for inclusion in readthedocs Intent is to embed this page into readthedocs, so reword the title and provide some repository links for context. Signed-off-by: Sipke Vriend <sipke(a)direktembedded.com> Commit: e2d16ecaecd39f62f3c179be42b78a62b62c31f9 https://github.com/OpenAMP/openamp-system-reference/commit/e2d16ecaecd39f62… Author: Sipke Vriend <sipke(a)direktembedded.com> Date: 2026-03-31 (Tue, 31 Mar 2026) Changed paths: M examples/legacy_apps/README.md Log Message: ----------- legacy_apps: remove execution of examples from build readme With the intent of providing individual execution shell blocks in each application/example sub directory remove the generic example from this build page. This is primarily as this page is intended to be embedded in the readthedocs so having htis shell block will not be intuitive there. Signed-off-by: Sipke Vriend <sipke(a)direktembedded.com> Commit: 656bbb5d1d50e5c97c266e2e299d8ee4af2db454 https://github.com/OpenAMP/openamp-system-reference/commit/656bbb5d1d50e5c9… Author: Sipke Vriend <sipke(a)direktembedded.com> Date: 2026-03-31 (Tue, 31 Mar 2026) Changed paths: M examples/legacy_apps/README.md Log Message: ----------- legacy_apps: change all code blocks to shell block without prompt to address issue https://github.com/OpenAMP/openamp-docs/issues/84 change all code blocks to markdown shell block. Signed-off-by: Sipke Vriend <sipke(a)direktembedded.com> Commit: 0f3c507cbdaab195940810f84e8447003896b8b4 https://github.com/OpenAMP/openamp-system-reference/commit/0f3c507cbdaab195… Author: Sipke Vriend <sipke(a)direktembedded.com> Date: 2026-03-31 (Tue, 31 Mar 2026) Changed paths: M examples/legacy_apps/README.md Log Message: ----------- legacy_apps: shift headings by one With this build file being included in readthedocs, we want to ensure the first heading is the main title, so shift all others out. Signed-off-by: Sipke Vriend <sipke(a)direktembedded.com> Commit: ff7a98bbdb9cf172ff04cd70b8df0b3363867b76 https://github.com/OpenAMP/openamp-system-reference/commit/ff7a98bbdb9cf172… Author: Sipke Vriend <sipke(a)direktembedded.com> Date: 2026-03-31 (Tue, 31 Mar 2026) Changed paths: M examples/legacy_apps/examples/linux_rpc_demo/README.rst Log Message: ----------- linux_rpc_demo: embed legacy_apps build info into readme file sphinx, as used in readthedocs can embed an md page, so do that here for read the docs, but leave the relative link for anyone that comes across this page via github directly. Signed-off-by: Sipke Vriend <sipke(a)direktembedded.com> Commit: 3747bc8de29283fcf7c80abf65448a42ac6cf774 https://github.com/OpenAMP/openamp-system-reference/commit/3747bc8de29283fc… Author: Sipke Vriend <sipke(a)direktembedded.com> Date: 2026-03-31 (Tue, 31 Mar 2026) Changed paths: M examples/legacy_apps/examples/matrix_multiply/README.rst Log Message: ----------- matrix_multiply: embed legacy_apps build info into readme file sphinx, as used in readthedocs can embed an md page, so do that here for read the docs, but leave the relative link for anyone that comes across this page via github directly. Signed-off-by: Sipke Vriend <sipke(a)direktembedded.com> Commit: e94322caa22e77c1642da5bb530322d01ce02f0c https://github.com/OpenAMP/openamp-system-reference/commit/e94322caa22e77c1… Author: Sipke Vriend <sipke(a)direktembedded.com> Date: 2026-03-31 (Tue, 31 Mar 2026) Changed paths: M examples/zephyr/rpmsg_multi_services/README.rst Log Message: ----------- zephyr:rpmsg_multi_services: embed legacy_apps build info into readme file sphinx, as used in readthedocs can embed an md page, so do that here for read the docs, but leave the relative link for anyone that comes across this page via github directly. Remove the title as the embed adds the title. Signed-off-by: Sipke Vriend <sipke(a)direktembedded.com> Commit: 763546731453620cf58a68587d8c1b06510422ca https://github.com/OpenAMP/openamp-system-reference/commit/763546731453620c… Author: Sipke Vriend <sipke(a)direktembedded.com> Date: 2026-03-31 (Tue, 31 Mar 2026) Changed paths: M examples/zephyr/README.md Log Message: ----------- zephyr: adjust introductory text of readme file for readthedocs integration This page will be embedded into readthedoc demo/examples so the two example references are not intuitive and they seem not to work on github markdown anyway, so not a big loss removing them from that repository. Signed-off-by: Sipke Vriend <sipke(a)direktembedded.com> Commit: f7d0cf37a7afd9b0e75fcd2a38bdadf3e82d3654 https://github.com/OpenAMP/openamp-system-reference/commit/f7d0cf37a7afd9b0… Author: Sipke Vriend <sipke(a)direktembedded.com> Date: 2026-03-31 (Tue, 31 Mar 2026) Changed paths: M examples/legacy_apps/examples/rpc_demo/README.rst Log Message: ----------- matrix_multiply: embed legacy_apps build info into rpc_demo readme file sphinx, as used in readthedocs can embed an md page, so do that here for read the docs, but leave the relative link for anyone that comes across this page via github directly. Signed-off-by: Sipke Vriend <sipke(a)direktembedded.com> Commit: 0994fa38c476f09e339123a9ae67289d3cc92c74 https://github.com/OpenAMP/openamp-system-reference/commit/0994fa38c476f09e… Author: Sipke Vriend <sipke(a)direktembedded.com> Date: 2026-03-31 (Tue, 31 Mar 2026) Changed paths: M examples/zephyr/rpmsg_multi_services/README.rst Log Message: ----------- examples:zephyr: remove prompt from shell commands for multi service demo To make for easier copying of commands remove the prompt from the start of command examples. Signed-off-by: Sipke Vriend <sipke(a)direktembedded.com> Commit: 20332c9a4ef8ec96cb39c56cee9fcc78947cb54c https://github.com/OpenAMP/openamp-system-reference/commit/20332c9a4ef8ec96… Author: Sipke Vriend <sipke(a)direktembedded.com> Date: 2026-03-31 (Tue, 31 Mar 2026) Changed paths: M examples/legacy_apps/machine/xlnx/README.md M examples/linux/dts/xilinx/README.md Log Message: ----------- doc: fix non consecutive headings warning for sphinx document generation Make headings consecutive to fix the header warning WARNING: Non-consecutive header level increase Signed-off-by: Sipke Vriend <sipke(a)direktembedded.com> Commit: 4869d96b79ae4d96aa17929b3a62531708db5fa7 https://github.com/OpenAMP/openamp-system-reference/commit/4869d96b79ae4d96… Author: Sipke Vriend <sipke(a)direktembedded.com> Date: 2026-03-31 (Tue, 31 Mar 2026) Changed paths: M examples/zephyr/dual_qemu_ivshmem/README.rst Log Message: ----------- doc: correct bullet list error due to missing indent The bullet point was multiline sentence so needs an indentation to avoid the warning. WARNING: Bullet list ends without a blank line; unexpected unindent. Signed-off-by: Sipke Vriend <sipke(a)direktembedded.com> Commit: a544f7149cd47f8c377281cff4c87828a9b9d9de https://github.com/OpenAMP/openamp-system-reference/commit/a544f7149cd47f8c… Author: Sipke Vriend <sipke(a)direktembedded.com> Date: 2026-03-31 (Tue, 31 Mar 2026) Changed paths: M examples/zephyr/rpmsg_multi_services/README.rst Log Message: ----------- doc: fix error in code-block directives most of the code-block indentation was slightly out, so correct to avoid the error. ERROR: Error in "code-block" directive Signed-off-by: Sipke Vriend <sipke(a)direktembedded.com> Commit: 26e0da75dcb467655090539b294142ed33f028ba https://github.com/OpenAMP/openamp-system-reference/commit/26e0da75dcb46765… Author: Sipke Vriend <sipke(a)direktembedded.com> Date: 2026-03-31 (Tue, 31 Mar 2026) Changed paths: M examples/libmetal/machine/remote/amd_rpu/system/generic/README.md Log Message: ----------- examples: add title to amd_rp readme to avoid warning The readme file was referenced by documentation through table of contents but as it had no title could not be created and skipped. Add a title to avoid the warning: toctree contains reference to document 'openamp-system-reference/examples/libmetal/machine/remote/amd_rpu/ system/generic/README' that doesn't have a title: no link will be generated [toc.no_title] Signed-off-by: Sipke Vriend <sipke(a)direktembedded.com> Commit: ebdb5c0c1119bfba9a840b7d8d43580722155b8e https://github.com/OpenAMP/openamp-system-reference/commit/ebdb5c0c1119bfba… Author: Sipke Vriend <sipke(a)direktembedded.com> Date: 2026-03-31 (Tue, 31 Mar 2026) Changed paths: M examples/zephyr/rpmsg_multi_services/README.rst Log Message: ----------- examples: create unique titles in zephyr multi services readme Sphinx config has title generating automatic references so create unique titles in this file to avoid the warning: WARNING: duplicate label ... Signed-off-by: Sipke Vriend <sipke(a)direktembedded.com> Compare: https://github.com/OpenAMP/openamp-system-reference/compare/3eec8f826a2f...… To unsubscribe from these emails, change your notification settings at https://github.com/OpenAMP/openamp-system-reference/settings/notifications

5 months, 3 weeks

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[OpenAMP/libmetal] 3d29e3: doc: add maintainers file to doxygen document gene...

by Arnaud Pouliquen

Branch: refs/heads/main Home: https://github.com/OpenAMP/libmetal Commit: 3d29e3b0fca97d5ddca4ec2795010bd1dd19d126 https://github.com/OpenAMP/libmetal/commit/3d29e3b0fca97d5ddca4ec2795010bd1… Author: Sipke Vriend <sipke(a)direktembedded.com> Date: 2026-03-31 (Tue, 31 Mar 2026) Changed paths: M doc/Doxyfile.in Log Message: ----------- doc: add maintainers file to doxygen document generation to provide access to maintainers information for this repository add it to the input source files. Signed-off-by: Sipke Vriend <sipke(a)direktembedded.com> Commit: c65f40afd64c1801b78c39ae58f24c6d7ba88af7 https://github.com/OpenAMP/libmetal/commit/c65f40afd64c1801b78c39ae58f24c6d… Author: Sipke Vriend <sipke(a)direktembedded.com> Date: 2026-03-31 (Tue, 31 Mar 2026) Changed paths: M doc/Doxyfile.in Log Message: ----------- doxygen: remove obsolete options PERL_PATH and MSCGEN_PATH are no longer used, so remove from Doxyfile.in to avoid warning warning Tag 'PERL_PATH' ... has become obsolete. warning: Tag 'MSCGEN_PATH' ... has become obsolete. Signed-off-by: Sipke Vriend <sipke(a)direktembedded.com> Compare: https://github.com/OpenAMP/libmetal/compare/ece95f0e7181...c65f40afd64c To unsubscribe from these emails, change your notification settings at https://github.com/OpenAMP/libmetal/settings/notifications

5 months, 3 weeks

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[OpenAMP/open-amp] 00a3c0: README: Fix URL format

by Arnaud Pouliquen

Branch: refs/heads/main Home: https://github.com/OpenAMP/open-amp Commit: 00a3c0d3f75452dafb1fd98682296a33d37e3ff8 https://github.com/OpenAMP/open-amp/commit/00a3c0d3f75452dafb1fd98682296a33… Author: Arnaud Pouliquen <arnaud.pouliquen(a)foss.st.com> Date: 2026-03-31 (Tue, 31 Mar 2026) Changed paths: M README.md Log Message: ----------- README: Fix URL format Converted the openamp-system-reference URL to a markdown link for better readability. Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen(a)foss.st.com> To unsubscribe from these emails, change your notification settings at https://github.com/OpenAMP/open-amp/settings/notifications

5 months, 3 weeks

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[OpenAMP/open-amp] c876e3: doc: add maintainers file to doxygen document gene...

by Arnaud Pouliquen

Branch: refs/heads/main Home: https://github.com/OpenAMP/open-amp Commit: c876e31706ca2c5e9c1b7a5302754ca6edd4ee0e https://github.com/OpenAMP/open-amp/commit/c876e31706ca2c5e9c1b7a5302754ca6… Author: Sipke Vriend <sipke(a)direktembedded.com> Date: 2026-03-31 (Tue, 31 Mar 2026) Changed paths: M doc/Doxyfile.in Log Message: ----------- doc: add maintainers file to doxygen document generation to provide access to maintainers information for this repository add it to the input source files. Signed-off-by: Sipke Vriend <sipke(a)direktembedded.com> Commit: da42e0cff6dad33e11af160697f9f2ec8998d674 https://github.com/OpenAMP/open-amp/commit/da42e0cff6dad33e11af160697f9f2ec… Author: Sipke Vriend <sipke(a)direktembedded.com> Date: 2026-03-31 (Tue, 31 Mar 2026) Changed paths: M doc/Doxyfile.in Log Message: ----------- doxygen: remove obsolete options PERL_PATH and MSCGEN_PATH are no longer used, so remove from Doxyfile.in to avoid warning: to avoid warning warning Tag 'PERL_PATH' ... has become obsolete. warning: Tag 'MSCGEN_PATH' ... has become obsolete. Signed-off-by: Sipke Vriend <sipke(a)direktembedded.com> Commit: 4a6835e34af7a40d56d08a7bdb8f755b316a8039 https://github.com/OpenAMP/open-amp/commit/4a6835e34af7a40d56d08a7bdb8f755b… Author: Sipke Vriend <sipke(a)direktembedded.com> Date: 2026-03-31 (Tue, 31 Mar 2026) Changed paths: R Doxyfile Log Message: ----------- doxygen: remove superfluous Doxyfile file used by doxygen is doc/Doxyfile.in so remove the Doxyfile file from root folder to avoid confusion. Signed-off-by: Sipke Vriend <sipke(a)direktembedded.com> Compare: https://github.com/OpenAMP/open-amp/compare/62b288811192...4a6835e34af7 To unsubscribe from these emails, change your notification settings at https://github.com/OpenAMP/open-amp/settings/notifications

5 months, 3 weeks

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OpenAMP release 2026.04: code freeze on April 17th

by Arnaud POULIQUEN

Hello, The v2026.04 release of the OpenAMP project repositories is scheduled for the end of next month. Please note that the feature freeze will take effect on April 17th. After this date, only bug fixes will be accepted until the release. To ensure sufficient time for the review process, please submit your pull requests at least two weeks before the feature freeze date. Thanks and regards, Arnaud Pouliquen

6 months

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[OpenAMP/open-amp] 62b288: remoteproc: clear bitmap in remoteproc_shutdown()

by Li Zhiyuan

Branch: refs/heads/main Home: https://github.com/OpenAMP/open-amp Commit: 62b28881119277b9d2f244b2314e18bde23c296e https://github.com/OpenAMP/open-amp/commit/62b28881119277b9d2f244b2314e18bd… Author: Li Zhiyuan <doitysf(a)hotmail.com> Date: 2026-02-25 (Wed, 25 Feb 2026) Changed paths: M lib/remoteproc/remoteproc.c Log Message: ----------- remoteproc: clear bitmap in remoteproc_shutdown() Clear the allocated bitmap in `remoteproc_shutdown()` to prevent resource table parsing failures on repeated remoteproc starts. Signed-off-by: Li Zhiyuan <doitysf(a)hotmail.com> To unsubscribe from these emails, change your notification settings at https://github.com/OpenAMP/open-amp/settings/notifications

6 months, 4 weeks

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[OpenAMP/openamp-system-reference] 5f1103: examples: legacy_apps: machine: fix Linux CMake bu...

by Arnaud Pouliquen

Branch: refs/heads/main Home: https://github.com/OpenAMP/openamp-system-reference Commit: 5f1103ee95f9c293a62185b36e0e311b2d4c0933 https://github.com/OpenAMP/openamp-system-reference/commit/5f1103ee95f9c293… Author: Arnaud Pouliquen <arnaud.pouliquen(a)foss.st.com> Date: 2026-02-17 (Tue, 17 Feb 2026) Changed paths: M examples/legacy_apps/machine/CMakeLists.txt Log Message: ----------- examples: legacy_apps: machine: fix Linux CMake build issue When PROJECT_VENDOR is not set it is treated as an empty string in the path ${CMAKE_CURRENT_SOURCE_DIR}/${PROJECT_VENDOR}/CMakeLists.txt. Since examples/legacy_apps/machine/CMakeLists.txt exists, the condition evaluates to true even though PROJECT_VENDOR is not defined. Fix this by explicitly testing that PROJECT_VENDOR is defined before checking for the vendor-specific CMakeLists.txt. Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen(a)foss.st.com> Commit: 3eec8f826a2f7fd5b3028bfdbe8253e00ec87f0c https://github.com/OpenAMP/openamp-system-reference/commit/3eec8f826a2f7fd5… Author: Arnaud Pouliquen <arnaud.pouliquen(a)foss.st.com> Date: 2026-02-17 (Tue, 17 Feb 2026) Changed paths: M examples/legacy_apps/cmake/options.cmake Log Message: ----------- examples: legacy_apps: machine: enable WITH_EXAMPLES by default The purpose of legacy_apps is to provide examples, so it makes sense to have this configuration enabled by default. This also fixes a compatibility issue with legacy scripts used, for instance, in the open-amp CI. Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen(a)foss.st.com> Compare: https://github.com/OpenAMP/openamp-system-reference/compare/4bdabbb5b6aa...… To unsubscribe from these emails, change your notification settings at https://github.com/OpenAMP/openamp-system-reference/settings/notifications

7 months

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Re: [OA-syst-ref] RPMsg IOCTL access without root permissions from Linux userspace

by Shah, Tanmay

On 2/6/2026 2:13 PM, Mark Hatle wrote: > > > On 2/6/26 11:43 AM, Shah, Tanmay via Openamp-system-reference wrote: >> Hi all, >> >> I am working on remoteproc auto-boot feature. While working on this, I >> realized it should be possible to achieve RPMsg communication without >> root access given to the user. Existing demos doesn't support it, but I >> want to open discussion on how that can be achieved. >> >> One way discussed was, to use IOCTLS to create RPMSg devices, and I had >> open issue here: >> https://github.com/OpenAMP/openamp-system-reference/issues/50 >> >> I tried to modify echo_test[1] demo and use IOCTLS instead of accessing >> devices from sysfs directly, but that still need root access. >> >> My goal is to design following workflow for the RPMsg communication with >> the remote processor: >> >> 1. Linux device-tree has auto-boot property enabled. >> 2. During boot, driver parses auto-boot related properties, loads fw and >> boots rproc automatically (without user's involvement) >> 3. After boot, rproc firmware does name service announcement of RPMsg >> channels. >> 4. Linux creates RPMsg devices and ept based on above announcement. >> 5. Userspace apps uses RPMsg ioctls to create ept and rpmsg devices. >> 6. Userspace apps uses created devices for RPMsg communication with the >> remote processor. >> >> As per my testing, as of now step-5 and step-6 needs root access. >> Ideally userspace apps should be able to create/read/write/close rpmsg >> devices without root access (for security purposes). >> >> Is there any other way this problem is solved? I appreciate your input. > > This is a 'capabilities' issue. If a user needs to be able to do > something (like run an app that communicates to another app), but it's > too dangerous to give them full system root access, you'd define > appropriate capabilities and then grant the user JUST the capabilities > they need. > > i.e. you should be able to grand the ability to read/write/close to a > user. The create could require something else. So your app startup > becomes: > > User/app gets root (this setuid root on the app) > App runs, which creates the remote connection and makes it available > User/app drops root, and moved to user permissions with an appropriate > capability to use those interfaces in a 'safe' way. > > I explored more about this. I think we can write udev rule which will create devices automatically. Here is the example: https://github.com/andersson/rpmsgexport/blob/master/README I don't have much knowledge on writing udev rules, but I will explore and learn it. > As long as the app startup through dropping the perms is well audited, > it is of minimal security concerns. Then the remaining app activities > are 'safe' in that they are constrained. > > I have no idea offhand what capabilities that IOCTL should use, but > there should be a lot of information about this. This is what I would > exlore. > Sure I will explore more on IOCTL and user capabilities. There should be some way to allow user to operate on particular devices without root privileges. Thank you for all the information. Tanmay > --Mark > > >> Thank You, >> Tanmay >> >> >> References: >> >> [1] >> https://github.com/OpenAMP/openamp-system-reference/blob/main/ >> examples/linux/rpmsg-echo-test/echo_test.c >> >> >

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