How to change Yocto Rootfs (imx6ul)

[tiagogomes]

Hi,

I am new to embedded Linux and have a i.MX6UL EVK board adapted to run from NAND (following these steps: https://community.freescale.com/docs/DOC-236994) and would like to know how to change the rootfs. Some settings of my system are:

MfgTool_MultiPanel (Library: 2.5.1)
mfgtool2-yocto-mx6ul-EVK-nand.vbs
rootfs_nogpu.tar.bz2
zImage, dtb and compiled modules (linux-2.6-imx-rel_imx_3.14.38_6ul_ga)
arm-linux-gnueabihf-gcc version 4.8.5 (Ubuntu / Linaro 4.8.5-1ubuntu1)

I already imagined that simply change and rename the original file rootfs_nogpu.tar.bz2 to the rootfs that I want would not work. I tried this and it did not work. Using the standard rootfs contained in MFGTOOL package (yocto), the system works normally.

After booting the kernel, the system stops with the following information:

init: ureadahead main process (56) terminated with status 5
init: mounted-proc main process (68) terminated with status 1

From this point, no more messages in the terminal.

For this test, I'm using rootfs downloaded at:
http://s3.armhf.com/dist/basefs/ubuntu-precise-12.04.4-armhf.com-20140603.tar.xz

Attached is the boot log and kernel .config

So what else should I do. Change any settings in the kernel?

Thanks!

Original Attachment has been moved to: Boot_LOG.txt.zip

Original Attachment has been moved to: KERNEL_CONFIG.txt.zip

[igorpadykov · Accepted solution]

Hi Tiago

image can be built using sect.5.1 Build configurations

attached Yocto Guide and selecting proper machine configuration

- imx6ulevk. Then new file rename ../OS Firmware/files/rootfs_nogpu.tar.bz2 in

MFG Tools. Note you can not  take any file and rename it, it should be built

for that specific processor and board configuration (as in case "imx6ulevk").

Suggest to create service request to obtain document with guidelines

for building ubuntu rootfs.

Best regards

igor

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[tiagogomes]

Hi igor,

Thank you for your quick response. I'll try it!

Best regards

Tiago Gomes