How do we write read and erase the QSPI memory(NOR flash) in Stm32mp157a Uboot?

[Sindhu Vadde]

Hi,

We are using Stm32mp157a processor and uboot2018.11 version.We have QSPI interface to NOR flash. We want to write,Read and erase the Data in Qspi Memory(i.e,Nor flash).We want to boot the image from Nor flash,How can we do that ?

Thanks in Advance.

[Kevin HUBER · Accepted solution]

Hello @Sindhu Vadde​ ,

The boot from a NOR flash is supported. This wiki page explains this mode for the ROM: https://wiki.st.com/stm32mpu/wiki/STM32MP15_ROM_code_overview#Boot_from_serial_NOR

Then you can find the environment variable to set to U-boot here: https://wiki.st.com/stm32mpu/wiki/U-Boot_overview#U-Boot_environment_variables

Do not hesitate to read the wiki, a lot of information are on it.

Regards,

Kevin

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