AnsweredAssumed Answered

Stuck up at 'starting kernel'

Question asked by Teju MMB on Feb 11, 2016
Latest reply on May 18, 2016 by Yuri Muhin

Hi Everyone,

We are testing a custom board designed using imx6 dual processor.


We have modified the u-boot and device tree file as per our design. We have the kernel and rootfs on SD card.

We are loading the u-boot using mfgtool.

The code hangs after 'starting kernel'. The log is as follows:




U-Boot 2015.07 (Feb 10 2016 - 12:14:42 +0530)


CPU:   Freescale i.MX6D rev1.5 996 MHz (running at 792 MHz)

Reset cause: POR

Board: SABRE Lite

I2C:   ready

DRAM:  1 GiB



SF: Unsupported flash IDs: manuf 00, jedec 0000, ext_jedec 0000

*** Warning - spi_flash_probe() failed, using default environment


auto-detected panel hannstar7

Display: lvds:hannstar7 (1280x800)

In:    serial

Out:   serial

Err:   serial

Net:   Phy 4 not found

using phy at 4

PHY reset timed out


Error: FEC address not set.

, usb_ether

Error: usb_ether address not set.


Hit any key to stop autoboot:  3  2  1  0

AHCI 0001.0300 32 slots 1 ports 3 Gbps 0x1 impl SATA mode

flags: ncq stag pm led clo only pmp pio slum part

No port device detected!

** Bad device size - sata 0 **


SATA device 1: unknown device

** Bad device sata 1 **

switch to partitions #0, OK

mmc0 is current device

reading /6x_bootscript

2933 bytes read in 22 ms (129.9 KiB/s)

## Executing script at 10008000

reading uEnv.txt

** Unable to read file uEnv.txt **

reading /imx6q-sabrelite.dtb

42516 bytes read in 28 ms (1.4 MiB/s)

Setting bus to 1

Error writing the chip: -19

only CEA modes allowed on HDMI port

reading /zImage

4954080 bytes read in 331 ms (14.3 MiB/s)

Kernel image @ 0x10800000 [ 0x000000 - 0x4b97e0 ]

## Flattened Device Tree blob at 13000000

   Booting using the fdt blob at 0x13000000

   reserving fdt memory region: addr=13000000 size=b000

   Using Device Tree in place at 13000000, end 1300dfff


Starting kernel ...




The sd card port is USDHC2.

We have tried following few posts with the same issues, but with no success.

Please let us know the other dependencies for booting kernel image.