From mboxrd@z Thu Jan  1 00:00:00 1970
From: Steven Scholz <steven.scholz@imc-berlin.de>
Date: Wed, 25 May 2005 11:01:14 +0200
Subject: [U-Boot-Users] Verify CRC on environment?
Message-ID: <42943EDA.7020404@imc-berlin.de>
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To: u-boot@lists.denx.de

Hi,

(how) can I verify the CRC of the environment using the crc32 command?

I am using CFG_ENV_ADDR_REDUND, so I guess I have to skip 5 bytes of header.
Do the two last 0x00 count?

My environment is at 10030000:

10030000: 4c 16 71 5f 00 62 6f 6f 74 64 65 6c 61 79 3d 30
10030010: 00 62 61 75 64 72 61 74 65 3d 31 31 35 32 30 30
10030020: 00 73 65 72 69 61 6c 23 3d 31 32 38 33 30 30 00
10030030: 73 74 64 69 6e 3d 73 65 72 69 61 6c 00 73 74 64
10030040: 6f 75 74 3d 73 65 72 69 61 6c 00 73 74 64 65 72
10030050: 72 3d 73 65 72 69 61 6c 00 00 3d 73 65 72 69 61
10030060: 6c 00 00 64 65 72 72 3d 73 65 72 69 61 6c 00 00
10030070: 74 64 65 72 72 3d 73 65 72 69 61 6c 00 00

That 0x7D, so 125+1 = 126 bytes

So I thought I have to calculate the crc over 126 - 5 = 0x79 bytes

crc32 10030005 0x79
CRC32 for 10030005 ... 1003007d ==> 8889f3af

But this is obviously wrong... :-(

-- 
Steven Scholz