On Fri, Mar 20, 2026 at 11:19:06AM +0200, Daniel Baluta wrote: > On 3/12/26 14:36, Peng Fan (OSS) wrote: > > This series adds remoteproc support for the i.MX94 family, including the > > CM70, CM71, and CM33S cores, and introduces a new device‑tree property to > > correctly derive the hardware reset vector for Cortex‑M processors whose > > ELF entry point does not directly correspond to the actual reset address. > > > > Background: > > Cortex‑M processors fetch their initial SP and PC from a fixed reset vector > > table. While ELF images embed the entry point (e_entry), this value is > > not always aligned to the hardware reset address. On platforms such as > > i.MX94 CM33S, masking is required to compute the correct reset vector > > address before programming the SoC reset registers. > > What happens if the reset vector is at 0 and the e_entry point is at 0x800...? > > In this case masking will no longer work! Can we implement a generic approach? >
I will wait to see an R-B from Daniel before looking at this set. Thanks, Mathieu > > > > > Similarly, on i.MX95, the existing implementation always programs a reset > > vector of 0x0, which only works when executing entirely from TCM. When > > firmware is loaded into DDR, the driver must pass the correct reset vector > > to the SM CPU/LMM interfaces. > > > > This series addresses these issues and provides the necessary DT bindings > > and driver support. > > > > Summary of patches: > > [1]dt-bindings: remoteproc: imx-rproc: Introduce fsl,reset-vector-mask > > Adds a new DT property allowing SoCs to specify a mask for deriving the > > hardware reset vector from the ELF entry point. > > > > [2]dt-bindings: remoteproc: imx-rproc: Support i.MX9[4,52] > > Adds compatible strings for i.MX94 CM70, CM71, and CM33S processors. > > > > [3]remoteproc: imx_rproc: Pass bootaddr to SM CPU/LMM reset vector > > Ensures the correct reset vector is passed to SM APIs by introducing a > > driver‑level helper (imx_rproc_get_boot_addr()) that applies the > > reset‑vector mask. > > > > [4]remoteproc: imx_rproc: Add support for i.MX94 remoteproc > > Adds address translation tables and configuration data for CM70, CM71, > > and CM33S, enabling full remoteproc operation on i.MX94. > > > > Signed-off-by: Peng Fan <[email protected]> > > --- > > Peng Fan (4): > > dt-bindings: remoteproc: imx-rproc: Introduce fsl,reset-vector-mask > > dt-bindings: remoteproc: imx-rproc: Support i.MX94 > > remoteproc: imx_rproc: Pass bootaddr to SM CPU/LMM reset vector > > remoteproc: imx_rproc: Add support for i.MX94 > > > > .../bindings/remoteproc/fsl,imx-rproc.yaml | 9 +++ > > drivers/remoteproc/imx_rproc.c | 85 > > +++++++++++++++++++++- > > 2 files changed, 91 insertions(+), 3 deletions(-) > > --- > > base-commit: 7109a2155340cc7b21f27e832ece6df03592f2e8 > > change-id: 20260311-imx943-rproc-2050e00b65f7 > > > > Best regards, > >
