Revision as of 10:31, 11 October 2021

Overview

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

$ export ARCH=
$ export

$ git clone https://github.com/ronetix/u-boot.git u-boot-ronetix --depth=1 -b 
$ cd u-boot-ronetix

$ make

$ source tools/imx8m_build_firmware.sh

$ make flash.bin

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=flash.bin of=/dev/sdX bs=1k seek= conv=fsync

@@ Line 5: / Line 5: @@
 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=arm64
+  $ export ARCH={{#var:ARCH}}
-  $ export CROSS_COMPILE=/opt/cross/aarch64-ronetix-linux-10.2/bin/aarch64-ronetix-linux-gnu-
+  $ export {{#var:CROSS_COMPILE}}
 ==== Clone the latest revision of the repo ====
@@ Line 19: / Line 19: @@
 ==== Build ====
-  $ make
+  $ make flash.bin
 = Build Results =
@@ Line 38: / Line 38: @@
 = 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
+  $ sudo dd if=flash.bin of=/dev/sdX bs=1k seek={{#var:SEEK}} conv=fsync
-The U-BOOT image should be at address 0x400 on the SD card.
 = See also =