topic Re: build imx-boot image in Yocto in i.MX Processors

build imx-boot image in Yocto

AlekseyM — Thu, 29 Jun 2023 13:44:14 GMT

Hello! I'm trying to create an imx-boot image but something goes wrong.
Could you add instructions for Yocto?
I see instructions for the standalone version
4.5.13 How to build imx-boot image by using imx-mkimage
But I didn't see any like u-boot/tools/mkimage/ or imx-mkimage/

Which command I should use? bitbake imx-mkimage ?

Re: build imx-boot image in Yocto

JorgeCas — Thu, 29 Jun 2023 22:16:35 GMT

Hello,

To create imx-boot image in Yocto you need to follow the next steps:

1. Follow the steps of chapters 3 and 4 called "Host Setup" and "Yocto Project Setup" on i.MX Yocto Project User's Guide.

2. After the command "repo sync" you have to put the next command:

DISTRO=fsl-imx-xwayland MACHINE=<machine> source imx-setup-release.sh -b <build directory>

Where:

<machine> is the board that you are using.

<build directory> the name of the directory where you want to deploy all the generated files.

3. Compile your boot image with the next command:

bitbake -c deploy imx-boot

4. You will have the outputs in the next folder:

/imx-yocto-bsp/<build directory>/tmp/deploy/images/<machine>

Best regards.

Re: build imx-boot image in Yocto

AlekseyM — Fri, 30 Jun 2023 14:55:34 GMT

Thanks! I was not precise in the question, I wanted to make small changes to the spl and dtb files.
I should change those files in u-boot-imx directory, right?
I mean I should do next step

bitbake -c compile u-boot-imx

Here I changed spl and dts, with patches or manually

bitbake u-boot-imx

Here I should make cp like in 4.5.13 How to build imx-boot image by using imx-mkimage, but I can't find u-boot/tools/mkimage, u-boot/spl/u-boot-spl.bin, u-boot-nodtb.bin
I find these bin files in u-boot-imx dir with another path, but u-boot/tools/mkimage I can't find anywhere

bitbake -c deploy imx-boot

Am I right?

Re: build imx-boot image in Yocto

JorgeCas — Fri, 30 Jun 2023 19:11:05 GMT

Got it, to do that process as you mentioned in your post, it is necessary to follow the next steps:

###### Host package setup ###### $ sudo apt install gawk wget git diffstat unzip texinfo gcc build-essential chrpath socat cpio python3 python3-pip python3-pexpect xz-utils debianutils iputils-ping python3-git python3-jinja2 libegl1-mesa libsdl1.2-dev pylint3 xterm python3-subunit mesa-common-dev zstd liblz4-tool rsync curl ###### Execute script for SDK installation ###### $ chmod a+x fsl-imx-internal-xwayland-glibc-x86_64-test-internal-qt6-armv8a-imx8mpevk-toolchain-5.15-kirkstone.sh ##### To obtain the SDK (.sh file) you have to do it in Yocto with: ##### $ bitbake imx-image-core -c populate_sdk ###### Set environment for build ###### $ . /opt/fsl-imx-internal-xwayland/5.15-kirkstone/environment-setup-armv8a-poky-linux $ export ARCH=arm64 ###### Build Uboot ###### $ mkdir uboot_build $ cd uboot_build $ git clone https://github.com/nxp-imx/uboot-imx -b lf_v2022.04 $ cd uboot-imx $ make clean $ make imx8mm_evk_defconfig $ make ###### Build ARM Trusted Firmware (ATF) ###### $ cd .. $ git clone https://github.com/nxp-imx/imx-atf -b lf_v2.6 $ cd imx-atf/ $ make PLAT=imx8mm bl31 ###### Download the DDR training bin ###### $ cd .. $ mkdir firmware-imx $ cd firmware-imx $ wget https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/firmware-imx-8.16.bin $ chmod a+x firmware-imx-8.16.bin $ ./firmware-imx-8.16.bin ###### Download imx-mkimage and build the boot image ###### $ cd ~ $ git clone https://github.com/nxp-imx/imx-mkimage -b lf-5.15.32_2.0.0 $ cd imx-mkimage ###### Now you may copy all the files need for build boot image (flash.bin) ###### $ cp ../uboot-imx/spl/u-boot-spl.bin iMX8M/ $ cp ../uboot-imx/u-boot-nodtb.bin iMX8M/ $ cp ../uboot-imx/arch/arm/dts/imx8mm-evk.dtb iMX8M/ $ cp ../imx-atf/build/imx8mm/release/bl31.bin iMX8M/ $ cp ../firmware-imx/firmware-imx-8.16/firmware/ddr/synopsys/lpddr4_pmu_train_* iMX8M/ $ cp ../uboot-imx/tools/mkimage iMX8M/mkimage_uboot $ make SOC=iMX8MM flash_evk

Best regards.

Re: build imx-boot image in Yocto

Edward_desplaines — Tue, 15 Apr 2025 20:38:10 GMT

I am trying to do the same thing for the iMX91 evk board. I can build the u-boot binary, but the imx-mkimage utility cannot build the flash.bin for the target flash_singleboot target for 91, since it is missing the firmware files. Can I get the wget address for the iMX91 firware files?