1a4eefc69SBernhard BeschowNXP i.MX 8M Plus Evaluation Kit (``imx8mp-evk``) 2a4eefc69SBernhard Beschow================================================ 3a4eefc69SBernhard Beschow 4a4eefc69SBernhard BeschowThe ``imx8mp-evk`` machine models the i.MX 8M Plus Evaluation Kit, based on an 5a4eefc69SBernhard Beschowi.MX 8M Plus SoC. 6a4eefc69SBernhard Beschow 7a4eefc69SBernhard BeschowSupported devices 8a4eefc69SBernhard Beschow----------------- 9a4eefc69SBernhard Beschow 10a4eefc69SBernhard BeschowThe ``imx8mp-evk`` machine implements the following devices: 11a4eefc69SBernhard Beschow 12a4eefc69SBernhard Beschow * Up to 4 Cortex-A53 cores 13a4eefc69SBernhard Beschow * Generic Interrupt Controller (GICv3) 14a4eefc69SBernhard Beschow * 4 UARTs 15a81193c3SBernhard Beschow * 3 USDHC Storage Controllers 16fd1deb53SBernhard Beschow * 1 Designware PCI Express Controller 17a17c1d93SBernhard Beschow * 5 GPIO Controllers 18764f18afSBernhard Beschow * 6 I2C Controllers 1906908a84SBernhard Beschow * 3 SPI Controllers 201ac21eb8SBernhard Beschow * 3 Watchdogs 21*f8b26121SBernhard Beschow * 6 General Purpose Timers 22487967beSBernhard Beschow * Secure Non-Volatile Storage (SNVS) including an RTC 2386c2dff9SBernhard Beschow * Clock Tree 24a4eefc69SBernhard Beschow 25a4eefc69SBernhard BeschowBoot options 26a4eefc69SBernhard Beschow------------ 27a4eefc69SBernhard Beschow 28a4eefc69SBernhard BeschowThe ``imx8mp-evk`` machine can start a Linux kernel directly using the standard 29a4eefc69SBernhard Beschow``-kernel`` functionality. 30a4eefc69SBernhard Beschow 31a4eefc69SBernhard BeschowDirect Linux Kernel Boot 32a4eefc69SBernhard Beschow'''''''''''''''''''''''' 33a4eefc69SBernhard Beschow 34a4eefc69SBernhard BeschowProbably the easiest way to get started with a whole Linux system on the machine 35a4eefc69SBernhard Beschowis to generate an image with Buildroot. Version 2024.11.1 is tested at the time 36a81193c3SBernhard Beschowof writing and involves three steps. First run the following commands in the 37a4eefc69SBernhard Beschowtoplevel directory of the Buildroot source tree: 38a4eefc69SBernhard Beschow 39a4eefc69SBernhard Beschow.. code-block:: bash 40a4eefc69SBernhard Beschow 41a4eefc69SBernhard Beschow $ make freescale_imx8mpevk_defconfig 42a4eefc69SBernhard Beschow $ make 43a4eefc69SBernhard Beschow 44a4eefc69SBernhard BeschowOnce finished successfully there is an ``output/image`` subfolder. Navigate into 45a81193c3SBernhard Beschowit and resize the SD card image to a power of two: 46a81193c3SBernhard Beschow 47a81193c3SBernhard Beschow.. code-block:: bash 48a81193c3SBernhard Beschow 49a81193c3SBernhard Beschow $ qemu-img resize sdcard.img 256M 50a81193c3SBernhard Beschow 51a81193c3SBernhard BeschowFinally, the device tree needs to be patched with the following commands which 52a81193c3SBernhard Beschowwill remove the ``cpu-idle-states`` properties from CPU nodes: 53a4eefc69SBernhard Beschow 54a4eefc69SBernhard Beschow.. code-block:: bash 55a4eefc69SBernhard Beschow 56a4eefc69SBernhard Beschow $ dtc imx8mp-evk.dtb | sed '/cpu-idle-states/d' > imx8mp-evk-patched.dts 57a4eefc69SBernhard Beschow $ dtc imx8mp-evk-patched.dts -o imx8mp-evk-patched.dtb 58a4eefc69SBernhard Beschow 59a4eefc69SBernhard BeschowNow that everything is prepared the machine can be started as follows: 60a4eefc69SBernhard Beschow 61a4eefc69SBernhard Beschow.. code-block:: bash 62a4eefc69SBernhard Beschow 63a4eefc69SBernhard Beschow $ qemu-system-aarch64 -M imx8mp-evk -smp 4 -m 3G \ 64a4eefc69SBernhard Beschow -display none -serial null -serial stdio \ 65a4eefc69SBernhard Beschow -kernel Image \ 66a4eefc69SBernhard Beschow -dtb imx8mp-evk-patched.dtb \ 67a81193c3SBernhard Beschow -append "root=/dev/mmcblk2p2" \ 68a81193c3SBernhard Beschow -drive file=sdcard.img,if=sd,bus=2,format=raw,id=mmcblk2 69