.. _imx8mm_evk: NXP i.MX8MM EVK (Cortex-A53) ############################ Overview ******** i.MX8M Mini LPDDR4 EVK board is based on NXP i.MX8M Mini applications processor, composed of a quad Cortex®-A53 cluster and a single Cortex®-M4 core. Zephyr OS is ported to run on the Cortex®-A53 core. - Board features: - RAM: 2GB LPDDR4 - Storage: - SanDisk 16GB eMMC5.1 - Micron 32MB QSPI NOR - microSD Socket - Wireless: - WiFi: 2.4/5GHz IEEE 802.11b/g/n - Bluetooth: v4.1 - USB: - OTG - 2x type C - Ethernet - PCI-E M.2 - Connectors: - 40-Pin Dual Row Header - LEDs: - 1x Power status LED - 1x UART LED - Debug - JTAG 20-pin connector - MicroUSB for UART debug, two COM ports for A53 and M4 More information about the board can be found at the `NXP website`_. Supported Features ================== The Zephyr mimx8mm_evk_a53 board configuration supports the following hardware features: +-----------+------------+-------------------------------------+ | Interface | Controller | Driver/Component | +===========+============+=====================================+ | GIC-v3 | on-chip | interrupt controller | +-----------+------------+-------------------------------------+ | ARM TIMER | on-chip | system clock | +-----------+------------+-------------------------------------+ | UART | on-chip | serial port | +-----------+------------+-------------------------------------+ Devices ======== System Clock ------------ This board configuration uses a system clock frequency of 8 MHz. Serial Port ----------- This board configuration uses a single serial communication channel with the CPU's UART4. Programming and Debugging ************************* Copy the compiled ``zephyr.bin`` to the first FAT partition of the SD card and plug the SD card into the board. Power it up and stop the u-boot execution at prompt. Use U-Boot to load and kick zephyr.bin: .. code-block:: console mw 303d0518 f 1; fatload mmc 1:1 0x93c00000 zephyr.bin; dcache flush; icache flush; dcache off; icache off; go 0x93c00000 Or kick SMP zephyr.bin: .. code-block:: console mw 303d0518 f 1; fatload mmc 1:1 0x93c00000 zephyr.bin; dcache flush; icache flush; dcache off; icache off; cpu release 2 0x93c00000 Use this configuration to run basic Zephyr applications and kernel tests, for example, with the :ref:`synchronization_sample`: .. zephyr-app-commands:: :zephyr-app: samples/synchronization :host-os: unix :board: mimx8mm_evk_a53 :goals: run This will build an image with the synchronization sample app, boot it and display the following ram console output: .. code-block:: console *** Booting Zephyr OS build zephyr-v3.1.0-3575-g44dd713bd883 *** thread_a: Hello World from cpu 0 on mimx8mm_evk_a53! thread_b: Hello World from cpu 0 on mimx8mm_evk_a53! thread_a: Hello World from cpu 0 on mimx8mm_evk_a53! thread_b: Hello World from cpu 0 on mimx8mm_evk_a53! thread_a: Hello World from cpu 0 on mimx8mm_evk_a53! Use Jailhouse hypervisor, after root cell linux is up: .. code-block:: console #jailhouse enable imx8mm.cell #jailhouse cell create imx8mm-zephyr.cell #jailhouse cell load 1 zephyr.bin -a 0x93c00000 #jailhouse cell start 1 References ========== .. _NXP website: https://www.nxp.com/design/development-boards/i.mx-evaluation-and-development-boards/evaluation-kit-for-thebr-i.mx-8m-mini-applications-processor:8MMINILPD4-EVK .. _i.MX 8M Applications Processor Reference Manual: https://www.nxp.com/webapp/Download?colCode=IMX8MMRM