i.MX ProcessorsのトピックRe: Adding uboot and kernel images into Ubuntu

Adding uboot and kernel images into Ubuntu

prashant_chopad — Mon, 12 Oct 2020 17:46:09 GMT

Hi,

I referred Ubuntu-i.MX8M.pdf. I used AWS to create Ubuntu BSP.

I can not do "Step-9 replace filesystem" as mentioned in above said PDF, as my SD card is not mountable on AWS.

Now I have folder "ubuntu-rootfs".

Would you please guide me to know how to flash it on my SD card?

How to include/add kernel and ubuntu images into the folder "ubuntu-rootfs".

Regards,

Prashant

Re: Adding uboot and kernel images into Ubuntu

Bio_TICFSL — Tue, 13 Oct 2020 12:50:04 GMT

Hello prashant,

You can burn the sd card with $sudo dd.

Regards

Re: Adding uboot and kernel images into Ubuntu

prashant_chopad — Sat, 17 Oct 2020 08:23:19 GMT

Hi,

Followed given steps:

1. Created ubuntu-rootfs.tar.bz2 on AWS server.

2. Downloaded on my Laptop having Ubuntu 18.04 LTS.

3. Connected 16GB SD card over USB to Laptop.

4. Formatted it using # sudo mkfs.ext4 /dev/sda1

5. Went inside the mounted folder : # cd /media/pch/216cfe51-d19e-443c-aea1-5295d81edd21

# sudo tar -jxvf /home/pch/AWS/ubuntu-rootfs.tar.bz2

Also tried it next time with # tar -xvJf ubuntu-rootfs.tar.bz2 -C /dev/sda1

6. Unmounted SD card and inserted on iMX8M Dev board.

7. Adjusted switches SW1101 and SW1102 to boot from MicroSD/SDHC2.

8. USB microB debug port connected to Laptop. Used Putty serial – ttyUSB0 (or 1).

9. Did not get anything on serial.

10. RED PWR LED was ON. Nothing else.

Would you please help me to understand what is going wrong? Why board is not booting up?

Regards,

Prashant

Re: Adding uboot and kernel images into Ubuntu

prashant_chopad — Fri, 23 Oct 2020 17:20:15 GMT

Hi,

I downloaded prebuilt images : L5.4.24-2.1.0_images_MX8MMEVK.zip

Used *.wic from them on SD card.

Adjusted switches SW1101 and SW1102 to boot from MicroSD/SDHC2.

Connected USB microB debug port to Laptop. Used Putty serial – ttyUSB0 (or 1).

Did not get anything on serial.

RED PWR LED was ON. Nothing else.

What would go wrong?

Regards,

Prashant

Re: Adding uboot and kernel images into Ubuntu

prashant_chopad — Mon, 26 Oct 2020 12:24:15 GMT

Used UUU and my board booted.