[PATCH 1/3] binman: imx8mimage: Handle nxp,boot-from = "fspi"

[Tom Rini]

On Sun, May 24, 2026 at 07:22:54PM +0200, Marek Vasut wrote:
> Boot from FSPI requires additional 448 Byte long header, with U-Boot SPL
> starting at offset 0x1000. Currently, both i.MX8MM and i.MX8MN attempt
> to generate this header using fspi_conf_block with filename pointing at
> CONFIG_FSPI_CONF_FILE file. This does not work, for two reasons.
> 
> First, the CONFIG_FSPI_CONF_FILE is generated by mkimage -T imx8mimage
> and may not be available yet when the fspi_conf_block is evaluated. That
> leads to a race condition where highly parallel builds fail to find the
> CONFIG_FSPI_CONF_FILE, which is usually called fspi_header.bin, on first
> build attempt.
> 
> Second, binman gets confused and patches incorrect offset of DDR PHY
> firmware blobs into U-Boot SPL, the offset is incremented by exactly
> 0x1000 which is the size of fspi_conf_block.
> 
> Fix both problems at once, make imx8mimage handle the generated FSPI
> header and prepend it in front of the imx8mimage processed data. This
> way, the race condition is solved, because the data generated by the
> imx8mimage are surely combined only after mkimage -T imx8mimage ran.
> The binman offset calculation is also solved, because there is no
> fspi_conf_block node in the DT anymore.
> 
> Signed-off-by: Marek Vasut <marex at nabladev.com>
> ---
> Cc: "NXP i.MX U-Boot Team" <uboot-imx at nxp.com>
> Cc: Adam Ford <aford173 at gmail.com>
> Cc: Alexander Koch <akoch at initse.com>
> Cc: Fabio Estevam <festevam at gmail.com>
> Cc: Peng Fan <peng.fan at nxp.com>
> Cc: Simon Glass <sjg at chromium.org>
> Cc: Tom Rini <trini at konsulko.com>
> Cc: u-boot at lists.denx.de
> ---
>  tools/binman/etype/nxp_imx8mimage.py     |  8 +++++++-
>  tools/binman/ftest.py                    |  5 +++++
>  tools/binman/test/351_nxp_imx8m_fspi.dts | 18 ++++++++++++++++++

Tests finally have subdirectories instead of the frequently conflicting
numerical prefix, please pick a subdirectory of tools/binman/test/ for
this for v2, and include a short cover letter as well, thanks!

-- 
Tom
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