i.MX ProcessorsのトピックRe: Kernel hangs at Virtual kernel memory layout: No SLUB info ?

Kernel hangs at Virtual kernel memory layout: No SLUB info ?

prasannamuthraj — Fri, 17 Oct 2014 17:26:19 GMT

Custom board imx6dl Hangs at Virtual Kernel Memory Layout.

Source : boundary-imx_3.10.17_1.0.0_ga

Appended imx6q-arm2-dtb to zImage to boot from 2009 uboot.

Uboot> bootm

## Booting kernel from Legacy Image at 10800000 ...

Image Name:

Image Type: ARM Linux Kernel Image (uncompressed)

Data Size: 5936480 Bytes = 5.7 MB

Load Address: 10008000

Entry Point: 10008000

Verifying Checksum ... OK

Loading Kernel Image ... OK

command line: console=ttymxc1,115200 rdinit=/linuxrc is being passed to the kernel

## Passing machid: 0x00000efd - 3837

## Transferring control to Linux (at address 10008000) ...

cleanup_before_linux...

Starting kernel...

Uncompressing Linux... done, booting the kernel.

[ 0.000000] Linux version 3.10.17-g898627a-dirty (usr@ubuntu) (gcc version 4.5.2 20101026 (prerelease) (GCC) ) #10 SMP PREEMPT Fri Oct 17 13:09:48 EDT 2014

[ 0.000000] CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c53c7d

[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache

[ 0.000000] Memory policy: ECC disabled, Data cache writealloc

[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 260096

[ 0.000000] Kernel command line: console=ttymxc1,115200 gpmi_nand_part gpmi-nfc enable_wait_mode=off fec_mac=00:1E:AE:11:22:33 loglevel=6 gpmi_debug_init earlyprintk root=/dev/mmcblk0p1 rootfstype=ext2 rootwait rw

[ 0.000000] Memory: 685720k/685720k available, 362856k reserved, 0K highmem

[ 0.000000] Virtual kernel memory layout:

[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)

[ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)

[ 0.000000] vmalloc : 0xc0800000 - 0xff000000 (1000 MB)

[ 0.000000] lowmem : 0x80000000 - 0xc0000000 (1024 MB)

[ 0.000000] pkmap : 0x7fe00000 - 0x80000000 ( 2 MB)

[ 0.000000] modules : 0x7f000000 - 0x7fe00000 ( 14 MB)

[ 0.000000] .text : 0x80008000 - 0x80d4a6e4 (13578 kB)

[ 0.000000] .init : 0x80d4b000 - 0x80f04c40 (1768 kB)

[ 0.000000] .data : 0x80f06000 - 0x80f76250 ( 449 kB)

[ 0.000000] .bss : 0x80f76250 - 0x815f8820 (6666 kB)

No stub info is printed and it hangs

Re: Kernel hangs at Virtual kernel memory layout: No SLUB info ?

igorpadykov — Sat, 18 Oct 2014 06:59:37 GMT

Hi prasanna

you are using imx6dl, while dtb is for another processor - imx6q-arm2-dtb.

imx6dl and imx6q are not fully compatible with each other.

You should use smth like *imx6dl*.dtb

linux/arch/arm/boot/dts at master · torvalds/linux · GitHub

Best regards

igor

Re: Kernel hangs at Virtual kernel memory layout: No SLUB info ?

prasannamuthraj — Mon, 20 Oct 2014 14:26:53 GMT

I'm using imx6 dual SoC , tried nitrogen6x, wandaboard dtb reference, none of them works. It still hangs at ,

Virtual kernel memory layout:

vector : 0xffff0000 - 0xffff1000 ( 4 kB)

fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)

vmalloc : 0xc0800000 - 0xff000000 (1000 MB)

lowmem : 0x80000000 - 0xc0000000 (1024 MB)

pkmap : 0x7fe00000 - 0x80000000 ( 2 MB)

modules : 0x7f000000 - 0x7fe00000 ( 14 MB)

.text : 0x80008000 - 0x80beca20 (12179 kB)

.init : 0x80bed000 - 0x80c312c0 ( 273 kB)

.data : 0x80c32000 - 0x80c814e0 ( 318 kB)

.bss : 0x80c814e0 - 0x80cea764 ( 421 kB)

þøÿ

are there any specific change to be made to any of those dts ? I'm having 1GB DDR3 RAM ( 4x256M ) with imx6dl SoC.

Re: Kernel hangs at Virtual kernel memory layout: No SLUB info ?

igorpadykov — Mon, 20 Oct 2014 14:37:59 GMT

Please try below BSP it has all necessary files

L3.10.17_1.0.0_IMX6QDLS_BUNDLE : Source Code Download Steps Documentation and Demo Images.

Also for custom board one needs to get DDR parameters (calibration settings) and use them

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

Best regards

igor

Re: Kernel hangs at Virtual kernel memory layout: No SLUB info ?

prasannamuthraj — Mon, 20 Oct 2014 21:42:14 GMT

DDR is already calibrated in uboot, for the board.

tried appending the fsl L3.10.17_1.0.0_ga_140404_images_MX6 dtb to my built uImage & also zImage( mkimage) and booted, still hangs at same place.

are SLUBs info missing because of wrong device tree blob memory configuration?

Re: Kernel hangs at Virtual kernel memory layout: No SLUB info ?

igorpadykov — Mon, 20 Oct 2014 23:29:19 GMT

Hi prasanna

this error may be caused by memory misconfiguration.

If your board is based on sabre-lite design please post this

to boundary devices forum, they should have correct configuration

files for such boards

http://boundarydevices.com/community/

~igor

Re: Kernel hangs at Virtual kernel memory layout: No SLUB info ?

prasannamuthraj — Mon, 24 Nov 2014 20:36:15 GMT

The board is not based on sabre lite design , are there minimal kernel & dtb configuration to test with 1GB of RAM ?

Re: Kernel hangs at Virtual kernel memory layout: No SLUB info ?

igorpadykov — Tue, 25 Nov 2014 02:47:50 GMT

L3.10.17_1.0.0_IMX6QDLS_BUNDLE : Source Code Download Steps Documentation and Demo Images.

Re: Kernel hangs at Virtual kernel memory layout: No SLUB info ?

prasannamuthraj — Sat, 06 Dec 2014 23:51:01 GMT

Well the board is having custom clock configuration having differences compared to sabresd. It seems like this is causing the issue in of_clk_init() in drivers/clk/clk.c where it scans the device tree for matching clock providers and calls their initialization functions, imx6dl.dtsi have them configured as same for all boards?

Re: Kernel hangs at Virtual kernel memory layout: No SLUB info ?

prasannamuthraj — Thu, 15 Jan 2015 21:33:04 GMT

Solved the issue by making the xtal clock configurations and uart initialization in device tree.