i.MX Processors中的主题 Re: porting u-boot and kernel to imx6Q Starting kernel ... hang

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

hangliu — Wed, 22 Jul 2015 07:52:39 GMT

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 ...

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

igorpadykov — Thu, 23 Jul 2015 01:40:42 GMT

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

hangliu — Thu, 23 Jul 2015 06:26:04 GMT

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 !

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

igorpadykov — Thu, 23 Jul 2015 06:31:36 GMT

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.

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

hangliu — Thu, 23 Jul 2015 06:45:35 GMT

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

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

jian_jiang — Wed, 31 Aug 2016 08:34:11 GMT

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