Stm32mp157A DDR Initialization Source Code in Bare metal?

Sindhu Vadde · ‎2022-07-28

Hi,

We want to develop bare metal application for Stm32mp157A processor. So we need the DDR initialization Source code in bare metal for Stm32mp157A processor. Can you help us in this.

PatrickF · ‎2022-07-28

HI @Sindhu Vadde ,

ST did not have any bare-metal delivery for STM32MP15x.

You could check with existing DYI, 3rd party or partners.

If you are willing to do it by yourself, TF-A source code might be a good start point.

https://github.com/STMicroelectronics/arm-trusted-firmware/tree/v2.6-stm32mp/drivers/st/ddr

TF-A mostly uses information from a DDR file generated by CubeMX https://wiki.st.com/stm32mpu/wiki/DDRCTRL_and_DDRPHYC_device_tree_configuration#Simple_example

Regards.

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tehniksit · ‎2022-07-28

You could also look at u-boot source code

Sindhu Vadde · ‎2022-07-28

Hi,

Thanks for the reply.

We gone through Uboot source Code. We found DDR_init Code. But we are unable to extract it. when we are trying to extract the source we got lot of errors.

Genadi Zawidowski · ‎2022-07-29

Check here:

https://github.com/ua1arn/hftrx/blob/7e32c6ab8fce538d7f0097841c2ecdc40b36b03d/src/sdram/sdram.c#L1790

Sindhu Vadde · ‎2022-07-29

Thanks for the reply.

Which tool you are using for building and compiling this code?

Genadi Zawidowski · ‎2022-07-29

arm-none-eabi-gcc last version,,,, Make. Check /build/stm32mp157axx of prolect for makefile and link scripts, /tools for sources of used tools and gnu-mcu-eclipse-build-tools-2.11-20180428-1604-win64.zip