[PATCH v2 00/10] arm: socfpga: iossm: add support for mailbox v1

[Ahmad Fatoum]

On 4/9/26 3:52 PM, Michael Tretter wrote:
> The IOSSM on the Agilex5 may have different mailbox versions depending
> on the Quartus version that was used to generate the SoC configuration.
> Up until now, barebox only supports mailbox version 0, which was
> configured by versions before Quartus 25.3.0. With Quartus 25.3.0 and
> later, the IOSSM provides mailbox version 1, which exposes many
> configuration options as registers instead of mailbox responses.
> 
> Since the IOSSM is used for SDRAM setup, barebox didn't boot on devices
> configured with Quartus 25.3.0 or later.
> 
> Refactor the iossm handling and add the handling of IOSSM mailbox
> version 1.
> 
> While at it, also add inline ECC handling. If the memory interface of
> the Agilex5 is configured for inline ECC (which is the current default)
> the bootloader has to be aware of inline ECC, too.
> 
> Signed-off-by: Michael Tretter <m.tretter at pengutronix.de>

Reviewed-by: Ahmad Fatoum <a.fatoum at pengutronix.de>

> ---
> Changes in v2:
> - Patch 4: Change memory_size in io96b_mb_ctrl to phys_size_t to prevent overflow
> - Link to v1: https://patch.msgid.link/20260407-socfpga-iossm-v1-v1-0-6440a5337eff@pengutronix.de
> 
> ---
> Michael Tretter (10):
>       arm: socfpga: iossm: remove uninitialized variable
>       arm: socfpga: iossm: add version check
>       arm: socfpga: iossm: use local mb_ctrl variable
>       arm: socfpga: iossm: store size in bytes
>       arm: socfpga: iossm: refactor io96b_mb_init
>       arm: socfpga: iossm: refactor return value handling
>       arm: socfgpa: iossm: extract poll_bist_mem_init_status
>       arm: socfgpa: iossm: extract initialization of one interface
>       arm: socfpga: iossm: add memory initialization with inline ecc
>       arm: socfpga: iossm: add support for mailbox v1
> 
>  arch/arm/mach-socfpga/agilex5-sdram.c |   9 +-
>  arch/arm/mach-socfpga/iossm_mailbox.c | 359 ++++++++++++++++++++++++----------
>  arch/arm/mach-socfpga/iossm_mailbox.h |   8 +-
>  3 files changed, 272 insertions(+), 104 deletions(-)
> ---
> base-commit: 0933e8f2ebf0d91dfcf177a4e4292b02921a53f1
> change-id: 20260407-socfpga-iossm-v1-59c19e340a2b
> 
> Best regards,

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