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Setting up environment variables under linux

U-Boot-Users Juergen Oberhofer 2 participants 2 messages Apr 24, 2004

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Juergen Oberhofer

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Hi,
I mapped the environment 'partition' to /dev/mtd2. Using
cat /dev/mtd2, I am able to read all the environment variables. Now, I tried to use the fw_printenv tool to get a specific variable, but this led to a crc-error (Warning: Bad CRC, using default environment)

My mtd2 partition is on 0x8000 - 0xc000,
so I configured fw_env.h:
DEVICE1_OFFSET 0x0000
DEVICE1_ESIZE 0x4000
ENV1_SIZE 0x4000

Does anybody know where the problem could be?
Regards
Juergen

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Quoted 8 lines · In message <[email protected]> you wrote:

I mapped the environment 'partition' to /dev/mtd2. Using
cat /dev/mtd2, I am able to read all the environment variables. Now, I tried to use the fw_printenv tool to get a specific variable, but this led to a crc-error (Warning: Bad CRC, using default environment)

My mtd2 partition is on 0x8000 - 0xc000,
so I configured fw_env.h:

What EXACTLY did you configure?

Did you keep the setting of HAVE_REDUND? And is does your system really use redundand flash sectors?

Did you keep the definition of CONFIG_FILE? and what does your config file contain?

Quoted 5 lines

DEVICE1_OFFSET 0x0000
DEVICE1_ESIZE 0x4000
ENV1_SIZE 0x4000

Does anybody know where the problem could be?

Misconfiguration. I think you left the "#define HAVE_REDUND" in the header file but use only a simple (non-redundand) flash sector; or you forgot to remove the CONFIG_FILE or to adapt your config file.

Best regards,

Wolfgang Denk

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