Overview
This is the Linux BSP (Board Support Package) and the development environment for the STM32H7 System-On-Module (SOM) and Starter Kit, release 2.6.0.
The BSP provides a software development environment for evaluation and development of Linux (uClinux) on the Cortex-M7 processor core of the STM32H7 microcontroller using the Emcraft STM32H7 SOM Starter Kit as a hardware platform.
Supported Features
The following list provides a summary of the features and capabilities of this release of the STM32H7 BSP:
- Linux:
- Kernel v.6.1.28;
- Serial Linux console;
- Ethernet device driver and Linux TCP/IP networking (ping, NFS, Telnet, FTP, NTPD, etc);
- Clock driver;
- pinctrl driver;
- busybox v1.35.0;
- POSIX pthreads;
- Hardened exception handling; an exception triggered by a process affects only the offending process.
- U-Boot firmware:
- U-Boot v 2019.04-rc3;
- Serial console command interface with various setup, test and maintenance commands;
- Environment variables allowing customisation 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;
- 10.3-2021.10 Arm Embedded Toolchain is used for development of U-Boot, Linux;
- 11.3 GNU toolchain is used for development of user-space applications;
- ELF / dynamic linking supported;
- Debugging of user-space applications with cross-GDB;
- Hardware FPU enabled in the toolchain and kernel;
- mkimage tool used by the Linux kernel build process to create a bootable Linux image.
Software Manifest
New and Changed Features
- Bring up uClinux on STM32H7-BSB Rev 3A.
ID: STM32H7-7.
- Migrate to HZ_1000.
ID: STM32H7-11.
- Add alternative STM32H7 pin settings for I2C/SPI/UART interfaces.
ID: STM32H7-8.
- Define usart6 in STM32H743 device tree.
ID: STM32H7-8.
- Add alternative STM32H7 pin settings for I2C/SPI/UART interfaces.
ID: STM32H7-8.
- Enable NL80211 driver.
ID: STM32H7-8.
- Strip binaries to save memory on uClinux.
ID: STM32H7-8.
- Fix bug: Workaround for arbitrary errors while writing U-Boot image to Flash from SPL.
ID: STM32H7-18.
- Fix bug: gcc 11.3: gdbserver crashes when attempting to start remote debugging.
ID: RM 6821.
- Fix bug: gdb 11.2: Termination of the gdbserver program leads to segmentation fault.
ID: RM 7001.
- Fix bug: Сan't resolve symbol by the ldso interpretator.
ID: RM 6943.
Known Problems and Limitations
This section lists known problems and limitations of this release:
- Managing U-Boot environment from Linux is not supported.
ID: STM32H7-17.
- Switch to Low Power Mode doesn't work in uClinux 2.6.0 for STM32H7 SOM.
ID: STM32H7-21.
- Controlling LED 1 from user space doesn't work in uClinux 2.6.0 for STM32H7 SOM.
ID: STM32H7-22.
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