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Freescale i.MX8MQ EVK board
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This file documents the Buildroot support for the Freescale i.MX8MQ
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EVK board.
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Build
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=====
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First, configure Buildroot for the i.MX8MQ EVK board:
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If you want to use the NXP kernel:
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make freescale_imx8mqevk_defconfig
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Or if you want to use a mainline kernel:
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make imx8mqevk_defconfig
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Build all components:
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make
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You will find in output/images/ the following files:
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- bl31.bin
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- boot.vfat
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- fsl-imx8mq-evk.dtb
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- Image
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- imx8-boot-sd.bin
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- lpddr4_pmu_train_fw.bin
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- rootfs.ext2
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- rootfs.ext4
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- rootfs.tar
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- sdcard.img
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- signed_hdmi_imx8m.bin
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- u-boot.bin
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- u-boot.imx
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- u-boot-nodtb.bin
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- u-boot-spl-ddr.bin
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Create a bootable SD card
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=========================
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To determine the device associated to the SD card have a look in the
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/proc/partitions file:
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cat /proc/partitions
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Buildroot prepares a bootable "sdcard.img" image in the output/images/
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directory, ready to be dumped on a SD card. Launch the following
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command as root:
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dd if=output/images/sdcard.img of=/dev/<your-sd-device>
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*** WARNING! This will destroy all the card content. Use with care! ***
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For details about the medium image layout, see the definition in
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board/freescale/common/imx/genimage.cfg.template_imx8.
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Boot the i.MX8MQ EVK board
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==========================
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To boot your newly created system:
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- insert the SD card in the SD slot of the board;
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- Configure the switches as follows:
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SW801: ON ON OFF OFF
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SW802: ON OFF
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- put a micro USB cable into the Debug USB Port and connect using a terminal
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emulator at 115200 bps, 8n1;
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- power on the board.
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Enable HDMI output
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==================
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To enable HDMI output at boot you must provide the video kernel boot
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argument. To set the video boot argument from U-Boot run after
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stopping in U-Boot prompt:
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setenv mmcargs 'setenv bootargs console=${console} root=${mmcroot} video=HDMI-A-1:1920x1080-32@60'
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saveenv
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reset
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Change screen resolution to suit your connected display.
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Enjoy!
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