imx6qsabresd not working with Yocto Scarthgap 5.0

[marcocavallini]

I built a linux system using Yocto Project 5.0 'scarthgap' for imx6qsabresd

MACHINE = 'imx6qsabresd'
DISTRO = 'fsl-imx-wayland'

The build is successful but the target system is not working.

The u-boot generated has messy environment and the kernel hangs with errors.

I wonder if imx6qsabresd is still supported on recent Yocto versions.

Thanks

[marcocavallini]

More details on the issue.
I started following the NXP user guide UG10164

mkdir yocto-mx6-scarthgap; cd yocto-mx6-scarthgap

repo init -u https://github.com/nxp-imx/imx-manifest \
-b imx-linux-scarthgap -m imx-6.6.52-2.2.0.xml

repo sync -j8

DISTRO=fsl-imx-wayland MACHINE=imx6qsabresd source imx-setup-release.sh -b build

bitbake core-image-minimal

[Bio_TICFSL]

Hello,

Are you programming a SD? make sure the DISP switches are ok.

Regards 

[marcocavallini]

Sorry if I wasn't clear.
The system compiled and I programmed the SD card.
When it starts, it's already clear that the U-Boot environment is not correct.

U-Boot 2024.04-lf_v2024.04+g6c4545203d1+p0 (Nov 15 2024 - 04:02:13 +0000)

CPU:   i.MX6Q rev1.2 996 MHz (running at 792 MHz)
CPU:   Automotive temperature grade (-40C to 125C) at 46C
Reset cause: POR
Model: i.MX6 Quad SABRE Smart Device Board
DRAM:  1 GiB
Core:  107 devices, 24 uclasses, devicetree: separate
PMIC: PFUZE100! DEV_ID=0x10 REV_ID=0x11
MMC:   FSL_SDHC: 1, FSL_SDHC: 2, FSL_SDHC: 3
Loading Environment from MMC... *** Warning - bad CRC, using default environment

No panel detected: default to Hannstar-XGA
Display: Hannstar-XGA (1024x768)
In:    serial
Out:   serial
Err:   serial
SEC0:  RNG instantiated
switch to partitions #0, OK
mmc2 is current device
flash target is MMC:2
Net:   eth0: ethernet@2188000 [PRIME]
Fastboot: Normal
Normal Boot
Hit any key to stop autoboot:  0 

Shouldn't everything already be properly set up for an official NXP evaluation board?
See the attached file.

[Bio_TICFSL]

Hi,

The bootloader is ok, but it can not enter to the kernel, that's your error, please check you have a valid kernel.

Regards

[marcocavallini]

Please find attached the boot log

Consider that I needed to manually enter the fdt_file because surprisingly was not populated by the build

[marcocavallini]

Hello,
just to be clear: I didn't make any modifications. I followed the instructions at the beginning of this thread exactly. I expect a standard NXP system to work out of the box, but it doesn't.
The kernel is present.

=> ls mmc 2:1
    54646   imx6q-sabresd-btwifi.dtb
    53782   imx6q-sabresd-enetirq.dtb
    53654   imx6q-sabresd-hdcp.dtb
    53573   imx6q-sabresd-ldo.dtb
    53649   imx6q-sabresd-pcie-ep.dtb
    53649   imx6q-sabresd-pcie.dtb
    53737   imx6q-sabresd-uart.dtb
    53653   imx6q-sabresd.dtb
   442392   tee.bin
   442456   uTee-6qsdb
  9475000   zImage

11 file(s), 0 dir(s)

=> ls mmc 2:2
<DIR>       1024 .
<DIR>       1024 ..
<DIR>      12288 lost+found
<SYM>          7 bin
<DIR>       1024 boot
<DIR>       1024 dev
<DIR>       3072 etc
<DIR>       1024 home
<SYM>          7 lib
<DIR>       1024 media
<DIR>       1024 mnt
<DIR>       1024 proc
<DIR>       1024 root
<DIR>       1024 run
<SYM>          8 sbin
<DIR>       1024 srv
<DIR>       1024 sys
<DIR>       1024 tmp
<DIR>       1024 usr
<DIR>       1024 var

[Bio_TICFSL]

Hello,

Please check if the board works with the image without modification it look like you don't have any kernel on it, forget about the ftd files, please check it.

Regards

[marcocavallini]

Hello, thank you for answering.

I replaced the SDcard just to be sure it is not the problem.

My board is MCIMX6Q-SDB SCH 27516 Rev C2

I don't understand why you say "it look like you don't have any kernel on it" because as you can see in the TXT file I attached last time the Kernel is booting

[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 6.6.52-lts-next-ge0f9e2afd4cf (oe-user@oe-host) (arm-poky-linux-gnueabi-gcc (GCC) 13.3.0, GNU ld (GNU Binutils) 2.42.0.20240723) #1 SMP PREEMPT Tue Nov 19 23:01:49 UTC 2024

However this is the sequence I followed in "verbatim mode":

1. I started following the NXP user guide UG10164
2. mkdir yocto-mx6-scarthgap; cd yocto-mx6-scarthgap
3. repo init -u https://github.com/nxp-imx/imx-manifest \
   -b imx-linux-scarthgap -m imx-6.6.52-2.2.0.xml
4. repo sync -j8
5. DISTRO=fsl-imx-wayland MACHINE=imx6qsabresd source imx-setup-release.sh -b build
6. bitbake core-image-minimal

then I flashed the image on the SDCARD

core-image-minimal-imx6qsabresd.rootfs-20250804102423.wic.bmap
core-image-minimal-imx6qsabresd.rootfs-20250804102423.wic.zst

then I verified DIP Switch SW6 to boot form SDcard in slot SD3
OFF-ON-OFF-OFF-OFF-OFF-ON-OFF

Then I powered the board on: See the new file attached