Dear Rahanesh,
In message 4AB786B9.4080000@tataelxsi.co.in you wrote:
U-Boot 1.1.2 (Sep 19 2009 - 10:26:28)
Board: IAD CPU Speed 200 MHz DRAM: 32 MB sflash.c:266:DF_F_DataflashProbe: Entered sflash.c:269:DF_F_DataflashProbe: flash type is 0x1 sflash.c:270:DF_F_DataflashProbe: num pages 32768 DataFlash:Nb pages: 32768 Page Size: 256 Size=3D 8388608 bytes Logical address: 0xAD000000 Nb Erase Blocks: 128 Erase Block Size: 65536 Area 0: AD000000 to AD003FFF Area 1: AD004000 to AD03FFFF Area 2: AD040000 to AD30BFFF Area 3: AD30C000 to AD7FFFFF got bad crc. got:0x603b0489, expected:0x0 *** Warning - bad CRC, using default environment
Ah! Here you can see that the CRC is incorrect in U-Boot already, so why do you expect to see a different result when using fw_printenv?
WHen the CRC _is_ incorrect, both U-Boot and fw_printenv will report this fact in the same way.
*Print message after execution of saveenv command from uboot :
*Saving Environment to dataflash... copy 0xad030000-0xad040000 to saveenv-buf 0x80100000. erasing 0xad030000 - 0xad03ffff Erasing sectors 0x3 to 0x3 sflash.c:69:DF_F_PageErase: erasing page: 0x3 done erasingsflash.c:164:DF_F_DataFlashWrite: write: src 0x80100000, dst=20 0x30000, size 0x10000
I have no idea what sort of code you might be using there, there is no such file as 'sflash.c' in the mainline U-Boot code.
And U-Boot 1.1.2 is old. I mean: OLD. Really, really OLD. Nearly 5 years old.
Please consider it completely unsupported at this time.
Please update and use recent code instead.
Best regards,
Wolfgang Denk