Debian Customizing U-Boot: Difference between revisions
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--> {{#vardefine:WORKDIR|~/{{#var:MACHINE_NAME}}-u-boot}} <!-- | --> {{#vardefine:WORKDIR|~/{{#var:MACHINE_NAME}}-u-boot}} <!-- | ||
--> {{#vardefine:WORKDIR_ENV|$WORKDIR}} <!-- | --> {{#vardefine:WORKDIR_ENV|$WORKDIR}} <!-- | ||
--> {{PageHeader|{{#var:HARDWARE_NAME}} - | --> {{PageHeader|{{#var:HARDWARE_NAME}} - Customizing U-Boot }} {{DocImage|category1=Yocto|category2={{#var:HARDWARE_NAME}}}} __toc__ | ||
= Introduction = | = Introduction = | ||
| Line 29: | Line 29: | ||
$ vim drivers/net/fsl_enetc.c | $ vim drivers/net/fsl_enetc.c | ||
$ vim drivers/net/fsl_enetc.h | $ vim drivers/net/fsl_enetc.h | ||
After changing the source code, | |||
$ git | After changing the source code, commit the changes locally and generate a patch file: | ||
$ git add . | |||
$ git commit -e | |||
$ git format-patch -1 | |||
Once the patch is created, copy it to the U-Boot patch folder, which is inside the Flexbuild directory: | Once the patch is created, copy it to the U-Boot patch folder, which is inside the Flexbuild directory: | ||
$ mkdir -p [...]/flexbuild/patch/uboot/ | $ mkdir -p [...]/flexbuild/patch/uboot/ | ||
$ cp | $ cp 0001-my-changes.patch [...]/flexbuild/patch/uboot/ | ||
== Build U-Boot individually == | == Build U-Boot individually == | ||
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Once you've entered the Docker environment, run: | Once you've entered the Docker environment, run: | ||
$ bld -f sdk-var.yml -m | $ bld -f sdk-var.yml -m {{#var:MACHINE_NAME}} uboot (Inside Docker environment) | ||
== Rebuild U-Boot == | == Rebuild U-Boot == | ||
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$ bld clean-bsp (Inside Docker environment) | $ bld clean-bsp (Inside Docker environment) | ||
Then, just build U-Boot normally with: | Then, just build U-Boot normally with: | ||
$ bld -f sdk-var.yml -m | $ bld -f sdk-var.yml -m {{#var:MACHINE_NAME}} uboot (Inside Docker environment) | ||
Latest revision as of 16:15, 27 June 2025
This page is using the default release mx8mm-debian-bookworm-6.6.52_24.12-v1.0.
To view this page for a specific Variscite SoM and software release, please follow these steps:
- Visit variwiki.com
- Select your SoM
- Select the software release
Introduction
This guide demonstrates how to patch and rebuild Debian U-Boot images.
To learn how to build the U-Boot images outside of Debian, see: Build U-Boot from source code
Prerequirements
Make sure you set up the Flexbuild Docker environment properly. Follow the instructions from step 5 of the Build Debian from source code page.
Add your patches on top of the Variscite source code
The following steps can be executed outside or inside the container.
Fetch the U-Boot source:
$ git clone https://github.com/varigit/uboot-imx -b lf_v2024.04_6.6.52-2.2.0_var01 $ cd uboot-imx $ git clean -fdx
Next, make the desired changes to the U-Boot source code. Example:
$ vim drivers/net/fsl_enetc.c $ vim drivers/net/fsl_enetc.h
After changing the source code, commit the changes locally and generate a patch file:
$ git add . $ git commit -e $ git format-patch -1
Once the patch is created, copy it to the U-Boot patch folder, which is inside the Flexbuild directory:
$ mkdir -p [...]/flexbuild/patch/uboot/ $ cp 0001-my-changes.patch [...]/flexbuild/patch/uboot/
Build U-Boot individually
Do not run any 'git am' or 'git apply' command. That will be done inside the U-Boot Makefile. Now, if you're not inside the container, get in with the following commands:
$ cd [...]/flexbuild (Outside Docker environment) $ . setup.env (Outside Docker environment) $ bld docker (Outside Docker environment)
Once you've entered the Docker environment, run:
$ bld -f sdk-var.yml -m imx8mm-var-dart uboot (Inside Docker environment)
Rebuild U-Boot
Once you've built U-Boot, a clean step is needed if a rebuild is required:
$ bld clean-bsp (Inside Docker environment)
Then, just build U-Boot normally with:
$ bld -f sdk-var.yml -m imx8mm-var-dart uboot (Inside Docker environment)