topic Re: IMX6 SABRESD Red Led no boot in i.MX Processors

IMX6 SABRESD Red Led no boot

andreatessadri — Fri, 26 Sep 2014 13:13:38 GMT

I have a Freescale IMX6 SabreSD Board with a iMX6 Quad Processor.

Until this morning everything was working fine.

The board was booting Yocto Linux from a SD Card.

I have removed all kernel modules with the command: rmmod *

After reboot the red led is permanently ON.

Did I corrupted the internal flash ?

How to find the flash image to upload via JTAG (if possible) ?

Thank you in advance

Andrea

sinanakman — Fri, 26 Sep 2014 14:38:53 GMT

Hi Andrea

The SPI is normally not populated on an sabresd board if this

is what you referring to. You can build a u-boot image and

boot your board from SD. If you have a JTAG tool, try to

halt after reset and check if you can read part of ram to make

sure your board is alive. I am not sure which red light you

are referring to. Perhaps you can check in its user guide to

see what a red led is indicating.

In either way, if your board is still alive, build an u-boot image

for your board and place it to an sd card as explained in

several places in this forum. Then you will be able to boot

your u-boot and you can continue loading a Linux image.

Hope this helps.

Sinan Akman

andreatessadri — Fri, 26 Sep 2014 15:28:22 GMT

Hi Sinan,

the red led is the D3 between the power connector and the SIM card slot.

I don't have a JTAG but I have successfully performed the download of the factory firmware with MFGtool.

Unfortunately the board still cannot boot.

Any suggestion is very welcomed.

Looking forward

Andrea

sinanakman — Fri, 26 Sep 2014 15:45:43 GMT

Hi Andrea, D3 is red while I am at u-boot in my board as well. This should be no problem.

I am not familiar with MFGTool and as mentioned my best suggestion would be to build an uboot

image and place it on SD then boot it from SD. I know this works if your board is fine.

Also, our sabred came with a preloaded SD card that you can boot uboot. If you still have this

original SD you can boot into uboot and you can then boot kernel from there.

Regards

Sinan Akman