1NXP i.MX 8M Plus Evaluation Kit (``imx8mp-evk``) 2================================================ 3 4The ``imx8mp-evk`` machine models the i.MX 8M Plus Evaluation Kit, based on an 5i.MX 8M Plus SoC. 6 7Supported devices 8----------------- 9 10The ``imx8mp-evk`` machine implements the following devices: 11 12 * Up to 4 Cortex-A53 cores 13 * Generic Interrupt Controller (GICv3) 14 * 4 UARTs 15 * 3 USDHC Storage Controllers 16 * 1 Designware PCI Express Controller 17 * 5 GPIO Controllers 18 * Secure Non-Volatile Storage (SNVS) including an RTC 19 * Clock Tree 20 21Boot options 22------------ 23 24The ``imx8mp-evk`` machine can start a Linux kernel directly using the standard 25``-kernel`` functionality. 26 27Direct Linux Kernel Boot 28'''''''''''''''''''''''' 29 30Probably the easiest way to get started with a whole Linux system on the machine 31is to generate an image with Buildroot. Version 2024.11.1 is tested at the time 32of writing and involves three steps. First run the following commands in the 33toplevel directory of the Buildroot source tree: 34 35.. code-block:: bash 36 37 $ make freescale_imx8mpevk_defconfig 38 $ make 39 40Once finished successfully there is an ``output/image`` subfolder. Navigate into 41it and resize the SD card image to a power of two: 42 43.. code-block:: bash 44 45 $ qemu-img resize sdcard.img 256M 46 47Finally, the device tree needs to be patched with the following commands which 48will remove the ``cpu-idle-states`` properties from CPU nodes: 49 50.. code-block:: bash 51 52 $ dtc imx8mp-evk.dtb | sed '/cpu-idle-states/d' > imx8mp-evk-patched.dts 53 $ dtc imx8mp-evk-patched.dts -o imx8mp-evk-patched.dtb 54 55Now that everything is prepared the machine can be started as follows: 56 57.. code-block:: bash 58 59 $ qemu-system-aarch64 -M imx8mp-evk -smp 4 -m 3G \ 60 -display none -serial null -serial stdio \ 61 -kernel Image \ 62 -dtb imx8mp-evk-patched.dtb \ 63 -append "root=/dev/mmcblk2p2" \ 64 -drive file=sdcard.img,if=sd,bus=2,format=raw,id=mmcblk2 65