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 X-OriginatorOrg: oss.nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: dcbe0708-cd87-4c67-7bba-08d8434b98df X-MS-Exchange-CrossTenant-AuthSource: AM4PR0401MB2401.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Aug 2020 07:52:04.4344 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: zhd1/HfRWEMp7Sr6OH2M6R7UoOhzNOK7FG13wa8Pqjh6k6qh/Cu8gPDIOiFNG4g7/gsJrhMH2SLI0vTkj/nrUJH51Upg+sHBxU5O8JldtOc= X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB5027 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, Peng was able to do a firt pass of review on my patchset which led to this second version. I hope a maintainer will be able to take a look at this patchset once rested after all the work they did for 5.9. On mar., 2020-07-21 at 17:20 +0200, franck.lenormand@oss.nxp.com wrote: > From: Franck LENORMAND > > This patchset aims to add support for the SECurity VIOlation (SECVIO) of the > SNVS. A secvio is a signal emitted by the SNVS when a hardware attack > is detected. On imx8x and imx8q SoC, the SNVS is controlled by the > SECO and it is possible to interact with it using the SCU using the SC APIs. > > For the driver to communicate with the SNVS via the SCU and the SECO, I had to: >  - Add support for exchange of big message with the SCU (needed for > imx_scu_irq_get_status) >  - Add API to check linux can control the SECVIO (imx_sc_rm_is_resource_owned) >  - Add APIs for the driver to read the state of the SECVIO registers of the > SNVS and DGO (imx_sc_seco_secvio_enable and imx_sc_seco_secvio_enable). > > To check the state of the SECVIO IRQ in the SCU, I added the > imx_scu_irq_get_status API. > > The secvio driver is designed to receive the IRQ produced by the > SNVS in case of hardware attack and notify the status to the > audit framework which can be used by the user. > > The goal of the driver is to be self suficient but can be extended by the > user to perform custom operations on values read (imx_sc_seco_secvio_enable) > > v2: >  - Removed (firmware: imx: scu-rm: Add Resource Management APIs) > -> Code required is already present >  - Removed (firmware: imx: scu: Support reception of messages of any size) > -> The imx-scu is already working in fast-ipc mode >  - (soc: imx8: Add the SC SECVIO driver): > - Fixed the warnings reported by kernel test robot > > Franck LENORMAND (5): >   firmware: imx: scu-seco: Add SEcure Controller APIS >   firmware: imx: scu-irq: Add API to retrieve status of IRQ >   dt-bindings: firmware: imx-scu: Add SECVIO resource >   dt-bindings: arm: imx: Documentation of the SC secvio driver >   soc: imx8: Add the SC SECVIO driver > >  .../bindings/arm/freescale/fsl,imx-sc-secvio.yaml  |  34 + >  drivers/firmware/imx/Makefile                      |   2 +- >  drivers/firmware/imx/imx-scu-irq.c                 |  37 +- >  drivers/firmware/imx/imx-scu.c                     |   3 + >  drivers/firmware/imx/seco.c                        | 275 +++++++ >  drivers/soc/imx/Kconfig                            |  10 + >  drivers/soc/imx/Makefile                           |   1 + >  drivers/soc/imx/secvio/Kconfig                     |  10 + >  drivers/soc/imx/secvio/Makefile                    |   3 + >  drivers/soc/imx/secvio/imx-secvio-audit.c          |  39 + >  drivers/soc/imx/secvio/imx-secvio-debugfs.c        | 379 +++++++++ >  drivers/soc/imx/secvio/imx-secvio-sc-int.h         |  84 ++ >  drivers/soc/imx/secvio/imx-secvio-sc.c             | 858 +++++++++++++++++++++ >  include/dt-bindings/firmware/imx/rsrc.h            |   3 +- >  include/linux/firmware/imx/ipc.h                   |   1 + >  include/linux/firmware/imx/sci.h                   |   5 + >  include/linux/firmware/imx/svc/seco.h              |  73 ++ >  include/soc/imx/imx-secvio-sc.h                    | 177 +++++ >  18 files changed, 1991 insertions(+), 3 deletions(-) >  create mode 100644 Documentation/devicetree/bindings/arm/freescale/fsl,imx-sc- > secvio.yaml >  create mode 100644 drivers/firmware/imx/seco.c >  create mode 100644 drivers/soc/imx/secvio/Kconfig >  create mode 100644 drivers/soc/imx/secvio/Makefile >  create mode 100644 drivers/soc/imx/secvio/imx-secvio-audit.c >  create mode 100644 drivers/soc/imx/secvio/imx-secvio-debugfs.c >  create mode 100644 drivers/soc/imx/secvio/imx-secvio-sc-int.h >  create mode 100644 drivers/soc/imx/secvio/imx-secvio-sc.c >  create mode 100644 include/linux/firmware/imx/svc/seco.h >  create mode 100644 include/soc/imx/imx-secvio-sc.h >