boot: zephyr: board: stm32h573i_dk: Add support for ext_flash_app variant #2500
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cc @JarmouniA |
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See comment here #2479 (review) |
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@erwango @JarmouniA Updated to follow changes on #2479 |
JarmouniA
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Oct 20, 2025
Following the introduction of stm32h573i-dk 'ext_flash_app' board variant, for storing apps in external flash and chainloading them with MCUboot that's placed in internal flash, we need a devicetree overlay to designate the internal flash and flash controller as the chosen 'zephyr,flash' and 'zephyr,flash-controller' for the MCUboot zephyr application. Also, BOOT_MAX_IMG_SECTORS_AUTO is no longer needed to be disabled after including the 'soc-nv-flash' binding in the 'st,stm32-xspi-nor' binding, then adding the 'erase-block-size' and 'write-block-size' properties in external Flash DT node. Signed-off-by: Tim Pambor <[email protected]> fix
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JarmouniA
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Oct 20, 2025
erwango
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Oct 20, 2025
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@nordicjm @de-nordic Can this PR be merged? |
nordicjm
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Oct 22, 2025
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Following the introduction of stm32h573i-dk 'ext_flash_app' board variant, for storing apps in external flash and chainloading them with MCUboot that's placed in internal flash, we need a devicetree overlay to designate the internal flash and flash controller as the chosen 'zephyr,flash' and 'zephyr,flash-controller' for the MCUboot zephyr application.
STM32_MEMMAP is no longer needed since it is now set on the Zephyr side in the board's 'Kconfig.defconfig' when building MCUboot app. Also, BOOT_MAX_IMG_SECTORS_AUTO is no longer needed to be disabled after including the 'soc-nv-flash' binding in the 'st,stm32-xspi-nor' binding, then adding the 'erase-block-size' and 'write-block-size' properties
in external Flash DT node. Therefore, remove the board conf file.
This PR follow along the changes for STM32H750B-DK in #2479. Aim is to get rid of the overlay in the future together with the overlay for STM32H750B-DK.