iMX7-CM U-Boot

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The U-Boot boot-loader is used for low-level initialization and operating system loading.

Building U-BOOT for iMX7-CM

This U-BOOT is based on, branch imx_v2020.04_5.4.24_2.1.0

Setup the cross compiler and CPU architecture

$ export ARCH=arm
$ export CROSS_COMPILE=/opt/cross/arm-ronetix-eabi-8.3.0/bin/arm-ronetix-eabi-

Clone the latest revision of the repo

$ git clone u-boot-ronetix --depth=1 -b imx_v2020.04_5.4.24_2.1.0_rnx
$ cd u-boot-ronetix

Configure and build

$ make imx7_cm_defconfig
$ make

Build Results

File Name Description
u-boot U-BOOT ELF image used for JTAG debugging
u-boot-dtb.imx U-BOOT image with DTB

Flashing U-BOOT image to a SD card

Replace sdX with the right device name.

$ sudo dd if=u-boot-dtb.imx of=/dev/sdX bs=1k seek=1 conv=fsync

The U-BOOT image should be at address 0x400 on the SD card.

See also