Using eMMC instead of Flash

[aygqq]

Hello
I've got a problem with a custom board on SF32LB563UCN26 chip.
There is only 512KB flash and it is not enough for our purposes.

From "Hardware Design Guide":

The SF32LB56xU supports SPI Nor/Nand and SD Nand Flash peripherals. The SPI Nor/NAND Flash uses the MPI interface, and the SD NAND Flash uses the SD interface. These types of Flash chips are physically pin-compatible.

Our board has eMMC connected to SD interface on PA06-PA11 pins, so that we can't connect SPI Nor/NAND Flash to MPI interface.

There are some questions:

1. Is it possible to use eMMC instead of SPI Nor/NAND Flash to store FLASH_BOOT_LOADER, HCPU_FLASH_CODE and other partitions there?

Answer: Yes, it is possible start from EMMC.

2. Is it possible to connect eMMC and SPI Nor/NAND Flash to SF32LB563UCN26 chip together?

Answer: Impossible connect eMMC and SPI together.

3. How to start from EMMC? How to configure my project and my board in SiFli SDK?
4. We have 8GB eMMC onboard and it is needed to store some files and work with them. Is it ok to use eMMC as a flash and as FAT filesystem at the same time?
5. Could you explain it in more detail?

They told me to directly connect to the PSRAM without using the demo boot.

[HalfSweet]

1. Absolutely. We support placing HCPU_FLASH_CODE on eMMC. Typically, we store ftab and bootloader on the SiP's NOR flash.
2. No.
3. Currently, the SDK does not include any boards using the 56 series chips with eMMC.
4. Yes. In fact, we actually want to move the firmware from eMMC to PSRAM for execution, as eMMC does not support XiP.
5. I don't understand this question. Is it from some other context?

[aygqq]

Thank you for your answer
Based on your responses, using eMMC is a great choice for my device

Could you add an example of board using the 56 series chips with eMMC to the SDK?
Do you need some specific information about my board?
How long might this take?