porting u-boot and kernel to imx6Q Starting kernel ... hang

[hangliu]

Hi,

     I porting u-boot and kernel to imx6q ,  the u-boot was start successufl, but the kernel not start.

u-boot version:U-Boot 2014.01

kernel:Linux-3.10.17。

This is starting message:

U-Boot 2014.01-00001-g13e5fd1-dirty (Jul 20 2015 - 16:21:16)

CPU:   Freescale i.MX6Q rev1.2 at 792 MHz

Reset cause: POR

Board: MX6-SabreSD

DRAM:  1 GiB

MMC:   FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2

*** Warning - bad CRC, using default environment

No panel detected: default to Hannstar-XGA

Display: Hannstar-XGA (1024x768)

In:    serial

Out:   serial

Err:   serial

Net:   Phy not found

PHY reset timed out

FEC [PRIME]

Warning: failed to set MAC address

Hit any key to stop autoboot:  0

mmc2 is current device

reading boot.scr

** Unable to read file boot.scr **

reading uImage

5763944 bytes read in 264 ms (20.8 MiB/s)

Booting from mmc ...

reading imx6q-sabresd.dtb

45548 bytes read in 19 ms (2.3 MiB/s)

## Booting kernel from Legacy Image at 12000000 ...

   Image Name:   Linux-3.10.17-1.0.0_ga-gdaa28b6-

   Image Type:   ARM Linux Kernel Image (uncompressed)

   Data Size:    5763880 Bytes = 5.5 MiB

   Load Address: 10008000

   Entry Point:  10008000

   Verifying Checksum ... OK

## Flattened Device Tree blob at 18000000

   Booting using the fdt blob at 0x18000000

   Loading Kernel Image ... OK

   Using Device Tree in place at 18000000, end 1800e1eb

Starting kernel ...

[jian_jiang]

You may need i.MX_BSP_Porting_Guide.pdf (in the L4.1.15_1.1.0_LINUX_DOCS)

i.MX 6Quad SABRE Development Board|NXP 

All the best

Jian Jiang

[igorpadykov]

Hi hang

such hanging may indicate DDR errors or incorrect memory configuration,

one can test memory with  DDR test

https://community.freescale.com/docs/DOC-96412

Best regards

igor

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[hangliu]

Hi,

    I have calibration ddr  with :

   ddr_stress_tester -t mx6x -df MX6Q_SabreSD_DDR3_register_programming_aid_v1.5.inc

but it not work.

still stop at: Starting kernel ...

do you know haveason another re about it ?

thanks !

[igorpadykov]

MX6Q_SabreSD_DDR3_register_programming_aid_v1.5.inc

is for Sabre board and it may not work properly for custom board.

For custom board one needs to get its own parameters using

i.Mx6DQSDL DDR3 Script Aid tool.

[hangliu]

In the uboot/arch/arm/cpu/armv7/mx6/soc.c I  defined CONFIG_SYS_L2CACHE_OFF macro, off the l2 cache, because of that ?