Kernel 3.10 for GK802

[Žydrūnas Urbonas]

Hi,

can anyone share experience building 3.10 kernel for GK802?
Kernel config, kernel tree and rootfs are welcome

Thanks!

[Steeve Morin]

+1 for me too. Note that the gk802 dtbs have been merged into https://github.com/linux4kix/linux-linaro-stable-mx6/pull/4

I am still missing a nice defconfig, though

[Žydrūnas Urbonas]

So, anyone succeeded compiling 3.10 and higher kernel for GK802?

[Haakon Stende]

I have made a linux-script that install the 3.10 for gk802

 on a sdcard:
http://stende.no-ip.info/imx6/gk802/3.10.17_1.0.0/scripts/mk_jessie-lxde_gk802.sh

hste

[Žydrūnas Urbonas]

Cool!
How did you compile the kernel? Which sources you took (git tree)?

[Haakon Stende]

I have updated the rootfs and script:
http://stende.no-ip.info/imx6/gk802/3.10.30/scripts/mk_jessie-lxde_gk802.sh

Its now based on http://jas-hacks.blogspot.no/2014/06/imx6-debian-jessie-gpuvpu-31017ga.html

I have added the kernelsource wich is based on in /usr/src/linux with a gk802_defconfig

Its based on https://github.com/linux4kix/linux-linaro-stable-mx6

hste

[Žydrūnas Urbonas]

Hi HSTe,

do you have uImage for this rootFS?
I want to boot this rootFS using UBoot and for this I converted zImage to uImage using this commad:

mkimage -A arm -O linux -T kernel -C none -a 0x80008000 -e 0x80008000 -n "Linux kernel" -d ./zImage uImage

But my GK802 does not boot:

U-Boot 2013.01-rc1-gd0486e7-dirty (May 04 2013 - 15:31:51)

CPU:   Freescale i.MX6Q rev1.2 at 792 MHz
Reset cause: POR
Board: MX6Q-gk802
DRAM:  1 GiB
MMC:   FSL_SDHC: 0, FSL_SDHC: 1
*** Warning - bad CRC, using default environment

In:    serial
Out:   serial
Err:   serial
Hit any key to stop autoboot:  0
mmc0 is current device
Failed to mount ext2 filesystem...
** Unrecognized filesystem type **
mmc1 is current device
402 bytes read
## Executing script at 10008000
mmc1 is current device
4925008 bytes read
## Booting kernel from Legacy Image at 10800000 ...
   Image Name:   Linux kernel
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    4924944 Bytes = 4.7 MiB
   Load Address: 80008000
   Entry Point:  80008000
   Verifying Checksum ... OK
   Loading Kernel Image ... OK
OK

Starting kernel ...

And then nothing. Neither serial console, nor HDMI show anything.

Tried to change offsets, like this:

Load Address: 10008000
Entry Point:  10008000

But still same.

Is it possible to boot this 3.10 kernel using UBoot?

Thanks

[Žydrūnas Urbonas]

Compiled 3.10.17-80732-ge4f800f from sources https://github.com/imx6-dongle/linux-imx/commit/e4f800f1a2b56074f5e3844225f6e53ce5bacecf, but still same issue - stuck at "Starting kernel ..."

[Žydrūnas Urbonas]

Hi HSTe,

I tried to build a card using your script: http://stende.no-ip.info/imx6/gk802/3.10.30/scripts/mk_jessie-lxde_gk802.sh
I put card into internal slot and when I try to boot I only see short spash screen of U-Boot with penguin and GK802 immediately reboots and again U-Boot splash screen, reboot...

Any steps to troubleshoot?
Maybe I need to use custom uEnv.txt?

Thanks

[Žydrūnas Urbonas]

Ok, finally got it working

Power adapter was causing the issue. Interesting is that old kernel 3.0.35 runs fine with the same adapter. But 3.10 reboot in a loop as soon as reaches this stage:

[....] Waiting for /dev to be fully populated...

Replaced power adapter with high quality 5V/2A - and now all is up and running

Thanks!