Wolfgang Denk wrote:
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.
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.
*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.
sflash.c is flash driver code . I showed you the print message of savenev to note that it is erasing 0xad030000 - 0xad03ffff. That means environment variables are placed in the mentioned sector(0xad030000 - 0xad03ffff). Actual address of environment variables is 0xad03f000, which is last 4Kb of 64KB sector. If this is the case what should be the DEVICE_OFFSET? ENV_SIZE?
Using the latest u-boot will be quite time consuming. Please help!!!
Thanks Rahanesh