Use of Serial NAND Flash on QSPI1 to boot/load full system

[roland van straten]

I want to use a Winbond W25M02Gxx 256MByte (2x1Gbit) on MP157 QSPI1 port. It seems that the boot mode supports the use of Serial NAND Flash.

Anyone tried this?

[PatrickF]

Hello,

Although low level boot is already available (BootROM), Serial-NAND is not yet supported in STM32MPU Ecosystem (Linux, TF-A, uBoot, CubeMX, CubeProgrammer, etc..).

Please wait for future announcements.

[roland van straten]

That's a pity. If I read your message correctly: I can boot from NOR and/or NAND Flash from the embedded boot loader (depending on the BOOT0..2 pins. However, I need to add an eMMC or SDCARD to be able to bring up a system? Correct?

Is there a time line?

[PatrickF]

Today, you already have multiple options as boot sources :

• NOR (QUADSPI) + SLC NAND (FMC) (or NOR+eMMC or NOR+SD-Card although those are less sensible for a product)
• SLC NAND (FMC)
• eMMC
• SD-Card

see https://wiki.st.com/stm32mpu/wiki/Boot_chains_overview#Overview_2

Regarding Serial-NAND, you can only load FSBL (TF-A) from Serial-NAND to SYSRAM (this is done by the BootROM), but this TF-A and the remaining of the boot chain (uBoot, Linux) is not yet publicly available with Serial-NAND options.

For more details, please contact your nearest local ST support.