Revision as of 09:36, 11 October 2021

Overview

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

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

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

$ 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

$ make imx7_cm_defconfig
$ make

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

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.

@@ Line 1: / Line 1: @@
-{{#vardefine:HARDWARE_NAME|iMX7-CM}} <!--
+{{#vardefine:HARDWARE_NAME|iMX7-CM}}
--->{{#vardefine:UBOOT_TAG|v2019.10}}  <!--
+{{#vardefine:UBOOT_BRANCH_ORIG|imx_v2020.04_5.4.24_2.1.0}}
--->{{#vardefine:DEFCONFIG_NAME|imx7_cm_defconfig}} <!--
+{{#vardefine:UBOOT_BRANCH|imx_v2020.04_5.4.24_2.1.0_rnx}}
--->
+{{#vardefine:DEFCONFIG_NAME|imx7_cm_defconfig}}
 [[File:iMX7-CM-top.png|thumb]]
 = Overview =
@@ Line 8: / Line 9: @@
 = Building U-BOOT for {{#var:HARDWARE_NAME}} =
-This U-BOOT is based on https://github.com/u-boot/u-boot.git, tag {{#var:UBOOT_TAG}}
+This U-BOOT is based on https://source.codeaurora.org/external/imx/uboot-imx.git, branch {{#var:UBOOT_BRANCH_ORIG}}
 ==== Setup the cross compiler and CPU architecture ====
   $ export ARCH=arm
@@ Line 14: / Line 16: @@
 ==== Clone the latest revision of the repo ====
-  $ git clone https://github.com/ronetix/u-boot.git u-boot-ronetix --depth=1
+  $ git clone https://github.com/ronetix/u-boot.git u-boot-ronetix --depth=1 -b {{#var:UBOOT_BRANCH}}
   $ cd u-boot-ronetix