1. Overview

This is the Linux BSP (Board Support Package) and the development environment for the STM32MP2 Evaluation Board, release 4.3.01.

The BSP provides a software development environment for evaluation and development of Linux on the STM32MP2 microcontroller variants (with up to 2 Cortex-A35 processor cores running up to the 1500MHz) using the ST’s STM32MP257F-EV1 Starter Kit as a hardware platform.

2. Supported Features

The following list provides a summary of the features and capabilities of this release of the STM32MP2 EV1 BSP:

• Linux:

  • Kernel v.6.1.82;

  • Serial Linux console;

  • Gigabit Ethernet device driver and Linux TCP/IP networking (ping, NFS, Telnet, FTP, NTPD, etc);

  • eMMC/SD device driver;

  • PCIe gen 2 host/gadget device driver

  • USB3 host/gadget device driver;

  • LCD device driver;

  • Touchscreen device driver;

  • Clock driver;

  • pinctrl driver;

  • busybox v1.36.1;

  • POSIX pthreads;

  • Hardened exception handling; an exception triggered by a process affects only the offending process.

• U-Boot firmware:

  • U-Boot v 2022.10;

  • Serial console command interface with various setup, test and maintenance commands;

  • Environment variables allowing customization of a unit;

  • Sophisticated OS auto-boot sequence;

  • Partitioning and management of external Flash;

  • Initial installation of Linux image to external Flash.

• Development environment:

  • Linux-hosted cross-development environment;

  • Yocto v4.2.4 distribution.

3. Known Problems and Limitations

This section lists known problems and limitations of this release:

1. Auto-boot doesn’t working due to garbage read from the serial lineThe target auto-boot feature does not work with picocom as that terminal application causes the U-Boot auto-boot count-down to be interrupted, effectively rendering the auto-boot feature not working.
   Workaround: The minicom terminal can be used as an alternative terminal application, which doesn’t cause the issue.
   ID: STM32MP2-5.

4. Further Reading

• Documentation Items:

Refer to the following page for various documentation items describing use of the STM32MP257F-EV1 Starter Kit:  STM32MP2 Resource Directory .

5. Support

Customers of the STM32MP257F-EV1 Starter Kit may contact Emcraft at a2f-linux-support@emcraft.com for support.