boot fitImage on i.MX8mp

[francesco_giust]

Hi,

I build fitImage for u-boot, but I am not able to boot image.

During boot I get this error:

[ 3.291520] VFS: Cannot open root device "(null)" or unknown-block(0,0): error -6
[ 3.299048] Please append a correct "root=" boot option; here are the available partitions:
[ 3.307436] 1f00 32768 mtdblock0
[ 3.307442] (driver?)
[ 3.314004] b300 30621696 mmcblk2
[ 3.314007] driver: mmcblk
[ 3.320830] b301 85196 mmcblk2p1 076c4a2a-01
[ 3.320834]
[ 3.327658] b302 1299318 mmcblk2p2 076c4a2a-02
[ 3.327662]
[ 3.334499] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

Do I miss some configurations into u-boot?

I tested build with official kirkstone and scarthgap, for i.MX8mp evaluation board, but I get same error

Thanks,

Francesco

[Zhiming_Liu]

Hello,

Did you append the bootargs in its file? Can you share your fitimage setting?

Best Regards,
Zhiming

[francesco_giust]

Hello,

I use 

KERNEL_CLASSES += "kernel-fitimage"
KERNEL_IMAGETYPES += " fitImage "

in local.conf to enable fitImage.

Is there a specific field in its file to add bootargs ? I didn't find this information anywhere, could you send me an example ?

BR,

Francesco

[Zhiming_Liu]

Hello,

Is there any other steps? I tried it on L6.6.52, there is no such issue. Please check if the rootfs mout point is correct.

The key logs:

[    0.000000] Kernel command line: console=ttymxc1,115200 root=/dev/mmcblk2p2 rootwait rw

[    2.191335] mmcblk2: mmc2:0001 DG4032 29.1 GiB
[    2.200753]  mmcblk2: p1 p2
[    2.204079] mmcblk2boot0: mmc2:0001 DG4032 4.00 MiB
[    2.210023] mmcblk2boot1: mmc2:0001 DG4032 4.00 MiB
[    2.213232] [drm] Initialized vivante 1.0.0 20170808 for 40000000.mix_gpu_ml on minor 0
[    2.216800] mmcblk2rpmb: mmc2:0001 DG4032 4.00 MiB, chardev (234:0)

Best Regards,
Zhiming

[francesco_giust]

I have an empty botoargs

[ 0.000000] Kernel command line:

is it not taken from u-boot environment ? 

I have 

console=ttymxc1,115200

mmcroot=/dev/mmcblk1p2 rootwait rw

mmcargs=setenv bootargs ${jh_clk} ${mcore_clk} console=${console} root=${mmcroot}

Regards,

Francesco

[Zhiming_Liu]

Hello,

Can you try to boot without fitImage to verify if there is any issue in your uboot?

The Uboot should give bootargs to kernel under normal circumstances.

Best Regards,
Zhiming