How to use part of eMMC card on a STM32MP135 firmware?

[SteMMo]

Moved from MCUs section - STM32 is an MPU.

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Hi all,

I'm developing a firmware for a custom board based on MP135 micro - baremetal solution.

The board has a MMC memory (no SD card) to host both bootloader and storage area (Fat).

I've added the FileX module, without ThreadX, the mmc_driver, the mmc_driver_glue and the hal low level functions (stm32mp13xx_hal_mmc.c, stm32mp13xx_ll_sdmmc.c).

Is there a way to configure FileX (and/or bottom layers) to use only a portion of the mmc memory?

I'm not able to find it, if present.

Thanks!