topic Re: Write buildroot output to imx6ull evk in i.MX Processors

Write buildroot output to imx6ull evk

mjay — Thu, 09 Mar 2023 08:52:59 GMT

Hello.
I am reviewing the development using imx6ulevk.

However, the BSP I use is not Yocto Project, but buildroot.

The buildroot I used is the buildroot-2022.11.2.

# make imx6ullevk_defconfig

# make

I got an output package by building a buildroot.

The output file is as follows:

boot.vfat imx6ull-14x14-evk.dtb rootfs.ext2 rootfs.ext4 rootfs.tar sdcard.img u-boot.bin u-boot.imx zImage

I want to record the output file in imx6ull evk.

I tried to use mfgtool, but it didn't go well, so I asked.

Is there any way?

Re: Write buildroot output to imx6ull evk

Sanket_Parekh — Tue, 14 Mar 2023 07:23:12 GMT

Hello @mjay

I hope you are doing well.

There are 2 important files that needed to be flashed into the board are given below
u-boot.bin
sdcard.img

One just needs to insert your micro SD card into a card reader (assuming the /dev/sdX device file is used), and type the below command:
sudo dd if=output/images/sdcard.img of=/dev/sdX

Thanks & Regards.

Sanket Parekh

Re: Write buildroot output to imx6ull evk

ethomas — Thu, 20 Jul 2023 16:56:23 GMT

Hello,

I am also building using buildroot for MCIMX6Q-SDB. I build the default configuration:

"freescale_imx6qsabresd_defconfig".

I then formatted the SD card per from page 9 of IMXLUG.pdf and copied the files per the specification. It tells me to dd u-boot.imx to 2 sectors offset (512 byte sectors) and then use linux copy command to place the zImage on fat32 partition at sectors 20480 (512 byte sectors), and rootfs.ext2 at ext4 partition at

1228800 sectors offset. If I am able to just use u-boot.imx and sdcard.img, how is the SDcard formatted to accomplish this?

Thanks.