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