iMX8M-CM U-Boot: Difference between revisions

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[[File:imx8m-cm_top.png|thumb]]
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= Overview =
= Overview =
The U-Boot boot-loader is used for low-level initialization and operating system loading.
The U-Boot boot-loader is used for low-level initialization and operating system loading.

Revision as of 13:52, 7 October 2021

File:imx8m-cm-top.png

Overview

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

Building U-BOOT for i.MX8M-CM

This U-BOOT is based on https://source.codeaurora.org/external/imx/uboot-imx.git, branch imx_v2020.04_5.4.24_2.1.0

Setup the cross compiler and CPU architecture

$ export ARCH=arm64
$ export CROSS_COMPILE=/opt/cross/aarch64-ronetix-linux-10.2/bin/aarch64-ronetix-linux-gnu-

Clone the latest revision of the repo

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

Configure and build

$ make imx8mq_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