[meta-freescale] Kernel freezes during boot, built from Dora for iMX.6 Quad

Wed Feb 18 07:37:58 PST 2015

On Wed, Feb 18, 2015 at 1:19 PM, Isaac Nickaein <nickaein.i at gmail.com> wrote:
> The console is set in the uboot "default_bootargs" variable as
>
> default_bootargs=set bootargs init=/linuxrc console=ttymxc0,115200 ro
> debug panic=1 video=${video_mode} ${mtdparts} ${append_bootargs}
>
> This did the job with the old kernel. Should I do some configuration
> to kernel of core-minimal-image to get the serial console working?

Core-image-minimal is not related with how you configure your kernel
or your uboot.

If you got it working outside yocto build system, now it's a matter to
properly configure your machine file and your kernel recipe.

Only with the description/log you provided so far, it's hard to me to
guess what it would be. Debug a bit further and then report again.

Maybe you may be interested in upstream this machine when you start to
work on master.....

Daiane
>
>
> I need to apply this patch and some other modifications to the kernel
> source code: https://community.freescale.com/docs/DOC-94019
> I have successfully done this on the kernel 3.0.35 provided by Ka-Ro.
> Now to switch to Yocto for development I want to make sure all things
> can be ported successfully. So, I chose a branch of Yocto with kernel
> 3.0.35 (dora) to see if the things still work. I will sure try dizzy
> next.
>
>
> The following is the list of all uboot variables:
>
> autoload=no
> autostart=no
> baseboard=stk5-v3
> baudrate=115200
> boot_mode=jffs2
> bootargs=init=/linuxrc console=ttymxc0,115200 ro debug panic=1
> video=mxcfb0:dev=bt656,BT1120-PAL,if=BT1120,fbpix=RGB24
> mtdparts=gpmi-nand:1m at 128k(u-boot),384k(env),4m(linux),64m at 9728k(rootfs),55168k(userfs),128k(dtb),512k(bbt)ro
> ubi.mtd=rootfs root=ubi0:rootfs rootfstype=ubifs
> bootargs_mmc=run default_bootargs;set bootargs ${bootargs}
> root=/dev/mmcblk0p3 rootwait
> bootargs_nand=run default_bootargs;set bootargs ${bootargs}
> root=/dev/mtdblock3 rootfstype=jffs2
> bootargs_nfs=run default_bootargs;set bootargs ${bootargs}
> root=/dev/nfs ip=dhcp nfsroot=${nfs_server}:${nfsroot},nolock
> bootargs_ubifs=run default_bootargs;set bootargs ${bootargs}
> ubi.mtd=rootfs root=ubi0:rootfs rootfstype=ubifs
> bootcmd=run bootcmd_ubifs
> bootcmd_mmc=set autostart no;run bootargs_mmc;fatload mmc 0
> ${loadaddr} uImage;run bootm_cmd
> bootcmd_nand=set autostart no;run bootargs_nand;nboot linux;run bootm_cmd
> bootcmd_net=set autostart no;run bootargs_nfs;dhcp;run bootm_cmd
> bootcmd_ubifs=set autostart no;run bootargs_ubifs;nboot linux;run bootm_cmd
> bootdelay=4
> bootfile=uImage-3.0.35_tx6
> bootm_cmd=bootm
> cpu_clk=800
> default_bootargs=set bootargs init=/linuxrc console=ttymxc0,115200 ro
> debug panic=1 video=${video_mode} ${mtdparts} ${append_bootargs}
> dnsip=10.1.1.1
> ethact=FEC
> ethaddr=00:0c:c6:79:aa:6f
> fdtaddr=11000000
> fdtsize=0000a204
> fileaddr=18000000
> filesize=3dc92c
> gatewayip=10.1.1.241
> ipaddr=10.1.1.163
> loadaddr=18000000
> mtddevname=u-boot
> mtddevnum=0
> mtdids=nand0=gpmi-nand
> mtdparts=mtdparts=gpmi-nand:1m at 128k(u-boot),384k(env),4m(linux),64m at 9728k(rootfs),55168k(userfs),128k(dtb),512k(bbt)ro
> netmask=255.255.0.0
> nfsroot=/tftpboot/rootfs
> otg_mode=device
> partition=nand0,0
> serverip=10.1.1.129
> stderr=lcd
> stdin=serial
> stdout=lcd
> touchpanel=tsc2007
> ver=U-Boot 2013.07-00115-g828ccd0 (Aug 21 2013 - 11:45:45)
> video_mode=mxcfb0:dev=bt656,BT1120-PAL,if=BT1120,fbpix=RGB24
>
>
> On Wed, Feb 18, 2015 at 6:26 PM, Daiane Angolini <daiane.list at gmail.com> wrote:
>> On Wed, Feb 18, 2015 at 11:39 AM, Isaac Nickaein <nickaein.i at gmail.com> wrote:
>>> Hi,
>>>
>>> I am trying to build Kernel 3.0.35 for my iMX.6Q. I am using Ka-Ro
>>> TX6Q (http://www.karo-electronics.com/tx6q.html) development kit which
>>> is compatible with the SabreSD boards.
>>>
>>> I've downloaded the Dora branch, set it up for imx6qsabresd board and
>>> bitbaked core-image-minimal based on this tutorial:
>>>
>>> https://community.freescale.com/servlet/JiveServlet/previewBody/95096-102-10-7847/yocto_tutorial.pdf
>>>
>>> After flashing the uImage onto the NAND, the kernel freezes at
>>> "Disabling LCD". Here is the output on the serial console:
>>
>> Do you have console enabled on your kernel command line?
>>
>>
>> Why do you need to use such old branch/kernel? If this is "compatible
>> with the SabreSD boards" I'm sure you´re going to succeed if using
>> dizzy
>>
>>
>> Daiane
>>
>>
>>
>>
>>>
>>>
>>>
>>> U-Boot 2013.07-00115-g828ccd0 (Aug 21 2013 - 11:45:45)
>>>
>>> CPU:   Freescale i.MX6Q rev1.2 at 792 MHz
>>> Reset cause: POR
>>> Temperature:   48 C, calibration data 0x59c51469
>>> Board: Ka-Ro TX6Q-1xx0
>>> I2C:   ready
>>> DRAM:  1 GiB
>>> VDDSOC  set to 1420mV
>>> VDDCORE set to 1420mV
>>> NAND:  128 MiB
>>> MMC:   FSL_SDHC: 0, FSL_SDHC: 1
>>> Invalid color depth: '1120' in video_mode; using default: '24'
>>> IPU HW Rev: 4
>>> CPU clock set to 792.000 MHz
>>> Baseboard: stk5-v3
>>> MAC addr from fuse: 00:0c:c6:79:aa:6f
>>> Net:   FEC
>>> Hit any key to stop autoboot:  0
>>>
>>> Loading from nand0, offset 0x180000
>>>    Image Name:   Linux-3.0.35-4.1.0+yocto+gbdde70
>>>    Image Type:   ARM Linux Kernel Image (uncompressed)
>>>    Data Size:    4042436 Bytes = 3.9 MiB
>>>    Load Address: 10008000
>>>    Entry Point:  10008000
>>> ## Booting kernel from Legacy Image at 18000000 ...
>>>    Image Name:   Linux-3.0.35-4.1.0+yocto+gbdde70
>>>    Image Type:   ARM Linux Kernel Image (uncompressed)
>>>    Data Size:    4042436 Bytes = 3.9 MiB
>>>    Load Address: 10008000
>>>    Entry Point:  10008000
>>>    Verifying Checksum ... OK
>>>    Loading Kernel Image ... OK
>>>
>>> Starting kernel ...
>>>
>>> Disabling LCD
>>>
>>>
>>> #### serial console output ends here ####
>>> --
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