ERROR: can't get kernel image

Simo Azz

Other Parts Discussed in Thread: DM3730, SEGGER

Hi,

I am having a big problem with my Gumstix board.

When I turn on my Gumstix board, the executions stops after the boot timeout:

OMAP36XX/37XX-GP ES2.1, CPU-OPP2, L3-165MHz, Max CPU Clock 1 Ghz
Gumstix Overo board + LPDDR/NAND
I2C: ready
DRAM: 512 MiB
NAND: 512 MiB
MMC: OMAP SD/MMC: 0
In: serial
Out: serial
Err: serial
Board revision: 1
Tranceiver detected on mmc2
No EEPROM on expansion board
Die ID #248c00029ff80000015913d805007022
Net: No ethernet found.
Hit any key to stop autoboot: 0
Booting from nand ...

NAND read: device 0 offset 0x280000, size 0x400000
4194304 bytes read: OK
## Booting kernel from Legacy Image at 82000000 ...
Image Name: Angstrom/2.6.34/overo
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 3160052 Bytes = 3 MiB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum ... Bad Data CRC
ERROR: can't get kernel image!
Overo #

I tried to insert the SD card in order to restore the whole system but it does not work.

It seems impossible to read any data from the SD card. How can I solve my problem ?

These are my environment variables for uBoot, and it always worked for me.

baudrate=115200
bootcmd=if mmc init; then if run loadbootscript; then run bootscript; else if run loaduimage; then run mmcboot; else run nandboot; fi; fi; else run nandboot; fi
bootdelay=5
bootscript=echo Running bootscript from mmc ...; source ${loadaddr}
console=ttyS2,115200n8
defaultdisplay=dvi
dieid#=248c00029ff80000015913d805007022
dvimode=1024x768MR-16@60
loadaddr=0x82000000
loadbootscript=fatload mmc ${mmcdev} ${loadaddr} boot.scr
loaduimage=fatload mmc ${mmcdev} ${loadaddr} uImage
mmcargs=setenv bootargs console=${console} mpurate=${mpurate} vram=${vram} omapfb.mode=dvi:${dvimode} omapdss.def_disp=${defaultdisplay} root=${mmcroot} rootfstype=${mmcrootfstype}
mmcboot=echo Booting from mmc ...; run mmcargs; bootm ${loadaddr}
mmcdev=0
mmcroot=/dev/mmcblk0p2 rw
mmcrootfstype=ext3 rootwait
mpurate=500
nandargs=setenv bootargs console=${console} mpurate=${mpurate} vram=${vram} omapfb.mode=dvi:${dvimode} omapdss.def_disp=${defaultdisplay} root=${nandroot} rootfstype=${nandrootfstype}
nandboot=echo Booting from nand ...; run nandargs; nand read ${loadaddr} 280000 400000; bootm ${loadaddr}
nandroot=/dev/mtdblock4 rw
nandrootfstype=jffs2
stderr=serial
stdin=serial
stdout=serial
vram=12M

I don't know how to proceed..

Could be helpfull to reflash the microprocessor with the ARM JTAG ?

Thank you in advance for your help.
Simon

over 11 years ago

0 Titusrathinaraj Stalin over 11 years ago

TI__Guru** 116100 points

Hi Simon,

It seems to be the kernel image which is stored in NAND flash got corrupted.

Try "setenv verify no" option to disable the CRC verification in u-boot but it won't resolve the problem unless we find actual problem of CRC error.

What processor are you using ?

Is that TI EVM or TI processor in it ?

If not, sorry we can't help you and post your query to appropriate forum.

0 Simo Azz over 11 years ago in reply to Titusrathinaraj Stalin

Prodigy 185 points

Hi Titusrathinaraj,

Thank you for your reply.

# It seems to be the kernel image which is stored in NAND flash got corrupted.

Yes, this is what I think as well, after looking somewhere through internet.
By the way I am not able to see anything insisde the filesystem.

The processor is a D3730:

http://www.ti.com.cn/cn/lit/ds/symlink/dm3730.pdf

I will try setting the environment variable as you suggested, and I will let you know.

Thanks.

Simon

0 Simo Azz over 11 years ago in reply to Simo Azz

Prodigy 185 points

Update:

Setting the environment variable

verify no

does not help.

Would be helpful to reflash the NAND with the JTAG by Segger, if possible ?

0 Titusrathinaraj Stalin over 11 years ago in reply to Simo Azz

TI__Guru** 116100 points

Hi Simo,

Would be helpful to reflash the NAND with the JTAG by Segger, if possible ?

Sure.

Because, kernel area may have ECC bit flips that could not corrected by u-boot source code and I doubt on ECC implementation on u-boot source for the CRC error.

This error goes off when you replace the old kernel to new kernel then ECC area got updated and boot well.

Try "nandwriter" for re flashing the NAND through JTAG.

How did you flash the kernel in NAND before ?

0 Simo Azz over 11 years ago in reply to Titusrathinaraj Stalin

Prodigy 185 points

Try "nandwriter" for re flashing the NAND through JTAG.

I think I will do it.

How did you flash the kernel in NAND before ?

The kernel was already flashed into the device.It's a pre-programmed Gumstix board.

So I think I will need to build an interfacing circuit and flash the kernel into.

Do you confirm ?

Thanks again.

Simo

0 Titusrathinaraj Stalin over 11 years ago in reply to Simo Azz

TI__Guru** 116100 points

Hi Simo,

I'm sure that we can re-write the kernel through "nandwriter's" CCS project through JTAG.

Already I experienced the similar problem, please refer to the following TI E2E post.

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/100/t/236870.aspx

0 Simo Azz over 11 years ago in reply to Titusrathinaraj Stalin

Prodigy 185 points

Wonderfull.

I will read carefully the thread you linked me and I will use the JTAG from Segger as soon as possible.

I have just one question.

I searched for info on how to use nandwriter and reflash the internal NAND of a DM3770 device.

I found these three pages:

http://processors.wiki.ti.com/index.php/DM355_DVEVM_NAND_Reloading

http://processors.wiki.ti.com/index.php/Writing_Kernel_Image_to_NAND_Flash

http://processors.wiki.ti.com/index.php/UG:_DaVinci_PSP_Installation_on_DM644x_EVM#Flashing_DM644x_EVM_using_NAND_Writer_utilities_.28CCS_environment.29

From the DM3770's datasheet I see that this one is compatible with OMAP3 architecture.

Can I refer to one of these links as tutorial (especially the first one) ?

Thank you gain.

Simo

0 Titusrathinaraj Stalin over 11 years ago in reply to Simo Azz

TI__Guru** 116100 points

Hi Simo,

I'm not sure.

You can ask/raise this question in DM37x TI E2E forum.

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/537.aspx

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ERROR: can't get kernel image