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How to resolve CRC issue in Uboot and maintain the env variables

U-Boot Zaheer Sheriff 2 participants 4 messages Nov 25, 2011

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Zaheer Sheriff

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#0 lore raw

Hi,
When I got the warning like

**** Warning - bad CRC, using default environment*

I came across the reason for this in _http://www.denx.de/wiki/view/DULG/WarningBadCRCUsingDefaultEnvironment_

Question:
I have ported U-Boot to a custom board. It seems to boot OK, but it prints:

*** Warning - bad CRC, using default environment

Why?

Answer:
Most probably everything is OK. The message is printed because the flash sector or ERPROM containing the environment variables has never been initialized yet. The message will go away as soon as you save the envrionment variables using the |*saveenv*| command.

How to resolve this. Yes every time I could not save the environment, how to resolve this.!!
Please help me in this regard. Your help would be appreciable.

Signature · 20 lines
Zaheer Sheriff K


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#1 lore raw
Quoted 23 lines · Zaheer Sheriff

Hi,
When I got the warning like

**** Warning - bad CRC, using default environment*

I came across the reason for this in _http://www.denx.de/wiki/view/DULG/WarningBadCRCUsingDefaultEnvironment_

Question:
I have ported U-Boot to a custom board. It seems to boot OK, but it prints:

*** Warning - bad CRC, using default environment

Why?
Answer:
Most probably everything is OK. The message is printed because the flash sector or ERPROM containing the environment variables has never been initialized yet. The message will go away as soon as you save the envrionment variables using the |*saveenv*| command.

Quoted 1 line

How to resolve this. Yes every time I could not save the environment,

You have not said which processor you use, which kind of board, which board you used as reference, if you are running the current U-boot version...you told us nothing, how can we help ?

Best regards,
Stefano Babic

Signature · 5 lines
=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office at denx.de
=====================================================================
author
#2 lore raw

Stefan,

I thought the error is generic, I never know it is processor or board specific error.
Here are the details:
OMAPL138 EVM board
u-boot version 2011.9 NOvember release.

modified env in da850 config file as :
-------
/*
* Linux Information
*/
#define LINUX_BOOT_PARAM_ADDR (PHYS_SDRAM_1 + 0x100)
#define CONFIG_CMDLINE_TAG
#define CONFIG_SETUP_MEMORY_TAGS
#define CONFIG_BOOTARGS "mem=32M console=ttyS2,115200n8 noinitrd rw
ip=10.1.5.115:10.1.5.69:10.1.5.1:255.255.255.0::eth0: root=/dev/nfs nfsroot=10.1.5.69:/home/targetNFS"
#define CONFIG_BOOTCOMMAND "if mmc rescan 0:1; then fatload mmc 0:1
0xc0700000 uImage; bootm c0700000; fi;"
#define CONFIG_BOOTDELAY 3
#define CONFIG_EXTRA_ENV_SETTINGS "ethaddr=00:08:ee:03:6a:c4\0"
---------------------------
Will this extra env creates CRC error.

this is my env variable:

setenv bootcmd 'sf probe 0;sf read c0008000 40000 340000; go c0008000'

Image file size is: 335268 hex

how to resolve this.

Zaheer

Quoted 33 lines · Stefano Babic
Quoted 23 lines · Zaheer Sheriff

Hi,
When I got the warning like

**** Warning - bad CRC, using default environment*

I came across the reason for this in _http://www.denx.de/wiki/view/DULG/WarningBadCRCUsingDefaultEnvironment_

Question:
I have ported U-Boot to a custom board. It seems to boot OK, but it prints:

*** Warning - bad CRC, using default environment

Why?
Answer:
Most probably everything is OK. The message is printed because the flash sector or ERPROM containing the environment variables has never been initialized yet. The message will go away as soon as you save the envrionment variables using the |*saveenv*| command.

Quoted 1 line

How to resolve this. Yes every time I could not save the environment,

You have not said which processor you use, which kind of board, which board you used as reference, if you are running the current U-boot version...you told us nothing, how can we help ?

Best regards,
Stefano Babic

Signature · 18 lines
Zaheer Sheriff K
-- 
 
WARNING: Computer viruses can be transmitted via email. The recipient
should check this email and any attachments for the presence of viruses.
The company accepts no liability for any damage caused by any virus
transmitted by this email.
 
www.easunreyrolle.com
 
This e-mail and any files transmitted with it are for the sole use of
the intended recipient(s) and may contain confidential and privileged
information.
If you are not the intended recipient, please contact the sender by
reply e-mail and destroy all copies of the original message.
Any unauthorized review, use, disclosure, dissemination, forwarding,
printing or copying of this email or any action taken in reliance on
this e-mail is strictly prohibited and may be unlawful.
#3 lore raw
Quoted 4 lines · Zaheer Sheriff

Stefan,

I thought the error is generic, I never know it is processor or board specific error.

You are wrong. It is not the same thing to store on NAND, on CFI flash, on I2C Eprom, on .....

Quoted 2 lines

Here are the details:
OMAPL138 EVM board u-boot version 2011.9 NOvember release.

                                          ^--- September
Quoted 9 lines

modified env in da850 config file as :
-------
/*
* Linux Information
*/
#define LINUX_BOOT_PARAM_ADDR (PHYS_SDRAM_1 + 0x100)
#define CONFIG_CMDLINE_TAG
#define CONFIG_SETUP_MEMORY_TAGS
#define CONFIG_BOOTARGS "mem=32M console=ttyS2,115200n8 noinitrd

Quoted 8 lines

rw ip=10.1.5.115:10.1.5.69:10.1.5.1:255.255.255.0::eth0: root=/dev/nfs nfsroot=10.1.5.69:/home/targetNFS"
#define CONFIG_BOOTCOMMAND "if mmc rescan 0:1; then fatload mmc 0:1
0xc0700000 uImage; bootm c0700000; fi;"
#define CONFIG_BOOTDELAY 3
#define CONFIG_EXTRA_ENV_SETTINGS "ethaddr=00:08:ee:03:6a:c4\0"
---------------------------
Will this extra env creates CRC error.

This is only the default environment when no environment is found. After the first time the environment is set, it is not used again.

Quoted 4 lines

this is my env variable:

setenv bootcmd 'sf probe 0;sf read c0008000 40000 340000; go c0008000'

Well, the environment in da850_am18xxevm.h (I assume, you have not yet said *exactly* which board you used as reference) starts at offset 0x40000. And it seems you put some code at this offset, else why do you want run it...

Are you sure you are not overwriting the SPI flash ?

Best regards,
Stefano Babic

Signature · 5 lines
=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office at denx.de
=====================================================================