OpenSTLinux BSP architecture overview

Applicable for

STM32MP13x lines, STM32MP15x lines, STM32MP21x lines, STM32MP23x lines, STM32MP25x lines

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The OpenSTLinux BSP encompasses the following components:

• The boot chain based on TF-A and U-Boot
• The OP-TEE secure OS running on the Cortex-A in secure mode
• The Linux kernel running on the Cortex-A in nonsecure mode

Important

OpenSTLinux BSP is part of any Linux-based embedded of the STM32 MPU embedded software offer (e.g., Yocto-based OpenSTLinux embedded software, Buildroot-based Linux embedded software…). It is NOT part of Bare metal - RTOS embedded software.

The figure below is clickable so that the user can directly jump to one of the sub-levels listed above.

OpenSTLinux BSP architecture overview

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  Zoom out to OpenSTLinux architecture overview

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  Zoom out to Buildroot-based Linux architecture overview

Board support package

Trusted firmware for Arm^® Cortex^®-A (see TF-A)

Das U-Boot -- the universal boot loader (see U-Boot)

Open portable trusted execution environment

Operating system

Cortex^®

Linux^® is a registered trademark of Linus Torvalds.

Microprocessor unit

Board support package

Trusted firmware for Arm^® Cortex^®-A (see TF-A)

Das U-Boot -- the universal boot loader (see U-Boot)

Open portable trusted execution environment

Operating system

Cortex^®

Linux^® is a registered trademark of Linus Torvalds.

Microprocessor unit

Arm^® is a registered trademark of Arm Limited (or its subsidiaries) in the US and/or elsewhere.