i.MX ProcessorsのトピックRe: MCIMX6ULL-EVK - Simple Boot Question

MCIMX6ULL-EVK - Simple Boot Question

philhale — Tue, 09 Feb 2021 18:47:49 GMT

Guys,

Sorry, I am new to the i.MX line of application processors. So, I ordered a iMX6 eval board to get acquainted. I have quite a bit of experience with the Freescale ARM processor line.

I have the evaluation unit connected via USB and I am seeing the u-boot processor bootloader (at least that is what I think I am seeing).

This is all I see:

I expected to see Linux loading. The SD card is installed and switch settings are as instructed in the Quick Start Guide, SW602 - D1:ON, D2: OFF, SW601 - D1:OFF, D2: OFF, D3:ON, D4:OFF. I have reloaded the SD card multiple times to verify that the SD card is loaded properly.

I do not have the LCD option.

Do you have any suggestions as to why this board is not booting Linux?

Thank you.

Phil

Re: MCIMX6ULL-EVK - Simple Boot Question

igorpadykov — Wed, 10 Feb 2021 00:15:32 GMT

Hi Phil

one can look at official software web page

https://www.nxp.com/design/software/embedded-software/i-mx-software/embedded-linux-for-i-mx-applications-processors:IMXLINUX?tab=In-Depth_Tab

Use "Demo Image" with documentation, like Linux Guide pay attention to sect.

4.3.2 Copying the full SD card image i.MX Linux User’s Guide

Best regards
igor

Re: MCIMX6ULL-EVK - Simple Boot Question

philhale — Wed, 10 Feb 2021 17:48:38 GMT

Igor,

I am using the SD card that came with the EVK. Shouldn't it automatically load Linux? Should the boot up sequence be visible in the UART-USB interface? Right now, the UART-USB interface only shows the u-boot sequence.

Regards,

Phil

Re: MCIMX6ULL-EVK - Simple Boot Question

philhale — Wed, 10 Feb 2021 19:02:32 GMT

Igor,

Are you suggesting that the SD card is no good or is non-functional?

Phil

Re: MCIMX6ULL-EVK - Simple Boot Question

igorpadykov — Thu, 11 Feb 2021 00:21:14 GMT

Hi Phil

yes SD may be corrupted so one can flash Demo Images. If uboot is available

one can try sect.4.7.6 Running Linux OS from MMC/SD i.MX Linux Reference Manual

All linux documentation :

https://www.nxp.com/design/software/embedded-software/i-mx-software/embedded-linux-for-i-mx-applications-processors:IMXLINUX?tab=In-Depth_Tab

Best regards
igor

Re: MCIMX6ULL-EVK - Simple Boot Question

philhale — Thu, 11 Feb 2021 00:43:41 GMT

I already returned one EVK because tech support thought the SD Card was bad. Not a good sign.

Re: MCIMX6ULL-EVK - Simple Boot Question

philhale — Sat, 13 Feb 2021 01:34:36 GMT

The problem was that the SD Card was not configured properly. Re-imaging the SD Card resolved the problem and Linux fired up and run right away.

This was a same problem with my previous post with a different evaluation board: https://community.nxp.com/t5/i-MX-Processors/MCIMX6ULL-EVK-Not-Working/td-p/1224277

Both problems, with two different EVK systems, ended up being the same problem. SD Card not being programmed properly.