Partner program
1. Builroot-based Linux embedded software overview[edit | edit source]
The diagram below shows Builroot-based Linux embedded software distribution main components:
- The open-source Linux® distribution, based on the Buildroot build system, running on the Arm® Cortex®-A, includes:
- The OpenSTLinux BSP with:
- The boot chain based on TF-A BL2 and U-Boot.
- The secure monitor based on TF-A BL31 or OP-TEE depending on Cortex®-A architecture, running on the Arm® Cortex®-A in secure mode.
- The OP-TEE secure OS running on the Arm® Cortex®-A in secure mode.
- The Linux® kernel running on the Arm® Cortex®-A in non-secure mode.
- The Linux middleware relies on the BSP to provide API to the Applications that typically interact with the user via the display, the touchscreen, etc.
- On OP-TEE side, the Trusted Applications (TA) relies on the OP-TEE core for secrets operations (not visible from the Linux and other software components).
- The OpenSTLinux BSP with:
- The FwST-M Packages that are composed of the firmwares running on Arm® Cortex®-M (not available on STM32MP13x lines
) depends on Arm® Cortex®-M architecture; it includes:
- The STM32Cube MPU Package running on the Arm® Cortex®-M non secure mode: it is based on HAL drivers and middleware, like STM32 microcontrollers, completed with coprocessor management for interaction with the Cortex-A.
- The Trusted Firmware Cortex-M secure OS running on the Arm® Cortex®-M in secure mode: it provides local secure services to STM32Cube MPU Package.
Even if the trusted applications (TA), the Linux-based applications and the STM23Cube-based applications are mainly developed by customers and third parties, examples of such applications are included in the Linux® Buildroot-based embedded software: see the examples described in the documentation[1].
The Linux® Buildroot-based embedded software is generated with Buildroot build system[2].
The clickable figure below allows to directly jump to any of the components of the Linux® Buildroot-based embedded software
2. References[edit | edit source]
Arm® is a registered trademark of Arm Limited (or its subsidiaries) in the US and/or elsewhere. 
Arm® is a registered trademark of Arm Limited (or its subsidiaries) in the US and/or elsewhere.