Defect Apalis iMX8

Technical Support
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1

Dear Toradex-Team,
after testing a Apalis-iMX8 in our custom Carrierboard, i cannot boot the Apalis anymore in a Apalis-Evaluation Board.
As our Carrierboard has some known flaws, there is a good chance that it damaged the Apalis. Currently I am not sure whether the Apalis is actually damaged.

Now I observe the following behaviour (when inserted into a standard Apalis Eval-Board):

  • I am able to flash the Toradex-Easyinstaller and I get an Image on DVI. But from here I am unable to a) erase the MMC and b) flash a new image from an SD Card, it simply quits.
  • When accessing via Serial Console I have access to the Bootloader, but I receive the following message:
U-Boot 2020.04-5.7.2+git.33bb8e968332 (Jan 01 1970 - 00:00:00 +0000)

CPU:   NXP i.MX8QM RevB A53 at 1200 MHz

DRAM:  4 GiB
MMC:   FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2
Loading Environment from MMC... OK
In:    serial
Out:   serial
Err:   serial
Model: Toradex Apalis iMX8 QuadMax 4GB Wi-Fi / BT IT V1.1C, Serial# 07240432

 BuildInfo:
  - SCFW 216a2c2e, SECO-FW c9de51c0, IMX-MKIMAGE 6a315dbc, ATF 2fa8c63
  - U-Boot 2020.04-5.7.2+git.33bb8e968332

switch to partitions #0, OK
mmc0(part 0) is current device
flash target is MMC:0
Net:   eth0: ethernet@5b040000
Fastboot: Normal
Normal Boot
Hit any key to stop autoboot:  0
switch to partitions #0, OK
mmc0(part 0) is current device
Scanning mmc 0:1...
fs_devread read outside partition 280233472
Failed to iterate over directory boot.scr
fs_devread read outside partition 1085539840
Failed to iterate over directory boot
fs_devread read outside partition 1085670912
Failed to iterate over directory dtb
fs_devread read outside partition 280233472
fs_devread read outside partition 1085670912
Apalis iMX8 #

I suspect that the internal MMC took damage in our Carrierboard.
My question is now wheter this is true, or if the error could be only in software.

Thanks for your efforts.

2

Since you’re able to load the Toradex Easy Installer (a stripped-down version of Linux), you can examine the eMMC partitioning using either Linux tools or the U-Boot mmc command. For more details, please refer to this page. Additionally, you can try erasing the eMMC as described here.