STM32MP2 Implementation Training | Ac6 Formation

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STR23STM32MP2 Implementation
This course describe the STM32MP2 Implementation and practical examples

Objectives

  • Understand the STM32MP2 architecture (dual Cortex-A35 + Cortex-M33) and memory/interconnect map.
  • Bring up the full boot chain: TF-A → OP-TEE → U-Boot → Linux, and read meaningful boot logs.
  • Configure and validate DDR and clock trees; confirm frequencies and governors on real hardware.
  • Build and customize OpenSTLinux (Yocto) images; add a simple layer/recipe.
  • Enable devices via Device Tree (pinmux, clocks, regulators) and debug with dmesg/sysfs.
  • Set up storage and flashing flows (eMMC/SD/USB-DFU) with safe partitioning.
  • Bring up key I/O: Ethernet/TSN, USB (host/gadget), and PCIe; run quick throughput checks.
  • Configure graphics and media: DRM/KMS + GPU, VPU pipelines, CSI-2 camera and DSI/RGB display.
  • Offload real-time work to the M33 core; exchange data with Linux via OpenAMP/RPMsg.
  • Run a small Edge-AI sample (CPU/GPU/NPU) and compare performance/latency.
  • Apply platform security: secure boot options, OP-TEE services, keys/OTP, tamper basics.
  • Implement OTA/rollback strategy (SWUpdate/Mender concepts) and a practical recovery path.
  • Tune power management (cpufreq/cpuidle) and record simple power profiles.
  • Produce a production checklist: versioning, UID/serial, crash/reset logs, diagnostics, and update policy.
  • Theoretical course
    • PDF material in English (printed for face-to-face); online over Teams.
    • Trainer assistance throughout.
  • Practical activities (40-50% of duration)
    • Code examples, exercises and solutions.
    • Remote: one online Linux PC per trainee, with emulated or physical board as needed.
    • Face-to-face / on-site: one PC (one per two beyond six trainees), target board and install manual as needed.
  • Downloadable preconfigured VM to redo the labs afterwards.
  • Each session starts with a trainee check-in.
  • Any embedded systems engineer or technician with the above prerequisites.
  • Prerequisites are checked before the training.
  • Progress is assessed by the trainer through the practical exercises, and by quizzes for sections without exercises.
  • Each trainee receives a completion certificate.
  • If a prerequisite gap appears, alternative or additional training is offered.

Course Outline

  • Dual A35 cluster; M33 real-time core.
  • AXI/AHB fabric; memory regions.
  • GPU / VPU / NPU blocks (high-level).
  • Display (RGB/LVDS/DSI), CSI-2 camera.
  • High-speed I/O: PCIe, TSN GbE, USB
Exercise:  SoC map quick tour
  • ROM → TF-A (FSBL) → OP-TEE (S-EL1) → U-Boot (SSBL) → Linux.
  • Boot media: eMMC/SD/USB-DFU/NAND (board-dep).
  • Device trees passed by U-Boot.
  • Secure boot hooks & fuses (overview).
  • Recovery & UART/USB consoles.
Exercise:  Hello boot
  • DDR type (LPDDR4/DDR4/DDR3L) basics.
  • TF-A DDR init vs board tuning.
  • RCC & PLL trees; kernel/Peripheral clocks.
  • DVFS/cpufreq overview.
  • MCO/clock probes for validation
Exercise:  Clock sanity
  • Linux pinctrl: groups/functions.
  • DTS vs DT overlay structure.
  • Regulators/GPIO/IRQ nodes.
  • Clocks/resets in DT.
  • Common mistakes & dmesg hints.
Exercise:  DTS tweak
  • Partitioning (boot/rootfs/data).
  • eMMC vs SD vs NAND trade-offs.
  • WIC/SD-card images vs dfu-util.
  • U-Boot mmc/fatload/env tips.
  • Filesystem choices (ext4/squashfs).
Exercise:  Flash flow
  • Layers: meta-st-openstlinux, machine configs.
  • repo init, bitbake targets.
  • SDK/cross-toolchain export.
  • Image types (core/weston/minimal).
  • Incremental rebuilds & sstate.
Exercise:  Build & boot
  • Kconfig vs DTS responsibilities.
  • Out-of-tree driver basics.
  • Debug: dmesg, trace-cmd, devlink.
  • UIO/GPIO-chardev access.
  • Packaging modules in Yocto.
Exercise:  LED/GPIO driver
  • PHY setup; TSN capabilities (high-level).
  • ip link, ethtool, iperf3 checks.
  • USB gadget vs host roles.
  • PCIe root complex basics.
Exercise:  Net bring-up
  • Resource isolation framework.
  • TZC/ETZPC-like gates (periph/DDR).
  • OP-TEE secure services.
  • Keys/OTP and tamper (overview).
  • Secure storage story
Exercise:  OP-TEE ping
  • Dual-A/B rootfs strategy.
  • SWUpdate/mender (concepts).
  • U-Boot env for rollback.
  • DFU recovery path.
  • Factory vs field flows.
Exercise:  Safe update sim
  • DRM/KMS planes/connectors.
  • 3D GPU overview (1080p UIs).
  • Mesa/Wayland (Weston).
  • Performance tips (buffers).
  • Multi-display notes
Exercise:  Weston demo
  • Formats & pixel planes.
  • H.264 decode/encode HW.
  • GStreamer pipelines.
  • Zero-copy paths idea.
  • Storage & bandwidth tips
Exercise:  GStreamer test
  • CSI-2 lanes & DT nodes.
  • Sensor drivers & controls.
  • ISP blocks (conceptual).
  • V4L2 capture basics.
  • Sync/exposure notes.
Exercise:  Camera capture
  • Connector DT bindings.
  • Mode setting (EDID/timings).
  • Backlight/panel drivers.
  • VSYNC/TE considerations.
  • Tear & bandwidth checks
Exercise:  Panel bring-up
  • NPU
  • Toolchains (TFLite/ONNX).
  • Delegate selection (CPU/GPU/NPU).
  • Pre/post-processing tips.
Exercise:  Demo
  • CubeMP2 HAL/LL layout.
  • Project templates in CubeIDE.
  • Clocks/IRQs on M33.
  • Bare-metal vs FreeRTOS.
  • Debug attach options
Exercise:  M33 hello
  • VirtIO/RPMsg concepts.
  • Shared memory carve-outs.
  • Mailbox/interrupt routing.
  • Message framing policy.
Exercise:  RPMsg ping-pong
  • UART/I²C/SPI from Linux.
  • Offloading real-time to M33.
  • PWM/capture (M33 side).
  • DMA pipelines.
  • Latency budgeting.
  • eMMC/SD tuning (HS modes).
  • ext4 vs squashfs trade-offs.
  • I/O schedulers & fio.
  • Wear leveling & logs.
  • Mount options & journaling.
Exercise:  I/O bench
  • Firewalling basics (nftables).
  • Secure shells/keys.
  • Time sync (PTP/NTP).
  • TSN concepts (sched/queues).
  • Logging & metrics.
Exercise:  Net hardening
  • cpufreq/governors.
  • cpuidle/suspend-to-RAM.
  • Peripheral low-power.
  • Display blanking strategy.
Exercise:  Power sweep
  • OTP/fuses & boot keys.
  • Active tamper inputs.
  • Secure RTC/monitors.
  • Rollback prevention.
  • Audit logging
Exercise:  Tamper demo
  • Golden image layout.
  • Serial/UID/keys injection.
  • Manufacturing scripts.
  • Boundary/functional tests.
  • Field diagnostics hooks.
Exercise:  Factory script
  • BSP update policy.
  • Yocto release strategy.
  • Security CVE handling.
  • Backup & recovery docs.
  • Next steps & references.
Exercise:  Self-audit
Duration
5 days
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Last update of course schedule: 27 June 2026

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