Subject: Re: jffs2 file system on MPC8272ADS

From: Nethra <[email-masked]>
Date: Wed, 26 Sep 2007 21:52:49 -0700 (PDT)

> Header CRC failed on REF_PRISTINE node at 0x0063b24c: Read 0xffffffff,
> calculated 0x44660075 
> Node totlen on flash (0xffffffff) != totlen from node ref (0x000002b4) 
> Header CRC failed on REF_PRISTINE node at 0x0063b500: Read 0xffffffff,
> calculated 0x44660075 
> Node totlen on flash (0xffffffff) != totlen from node ref (0x000002c8) 
> Header CRC failed on REF_PRISTINE node at 0x0063b7c8: Read 0xffffffff,
> calculated 0x44660075 
> 
> are they debug messages or warnings...? 

>>They are errors.

which are all the most possible reasons for these errors ?

> # CONFIG_MTD_MAP_BANK_WIDTH_1 is not set 
> # CONFIG_MTD_MAP_BANK_WIDTH_2 is not set 
> CONFIG_MTD_MAP_BANK_WIDTH_4=y 
> # CONFIG_MTD_MAP_BANK_WIDTH_8 is not set 
> # CONFIG_MTD_MAP_BANK_WIDTH_16 is not set 
> # CONFIG_MTD_MAP_BANK_WIDTH_32 is not set 
> # CONFIG_MTD_CFI_I1 is not set 
> CONFIG_MTD_CFI_I2=y 
> # CONFIG_MTD_CFI_I4 is not set 
> # CONFIG_MTD_CFI_I8 is not set 
[snip]
> # 
> # Mapping drivers for chip access 
> # 
> # CONFIG_MTD_COMPLEX_MAPPINGS is not set 
> CONFIG_MTD_PHYSMAP=y 
> CONFIG_MTD_PHYSMAP_START=0xFC000000 
> CONFIG_MTD_PHYSMAP_LEN=0x4000000CONFIG_MTD_PHYSMAP_BANKWIDTH=4 
> # CONFIG_MTD_MULTI_PHYSMAP is not set 
> # CONFIG_MTD_SBC8240 is not set 
> CONFIG_MTD_PQ2FADS=y 
> # CONFIG_MTD_PLATRAM is not set 

>>Are you using a non-standard flash SIMM?  The one that comes with the
>>board (that I've seen, at least) have interleave 4, and are mapped at
>>0xfe000000.

 First of all this is CUSTOM board similar to MPC8272ADS.

We are using flash which is different from flash that comes with the
MPC8272ADS board.

FLASH:	 S29GL256N90TF
       	Total size is 64 MB with 2 flash interleave
       	mapped at 0xfc000000.
       	
>>Was it the physmap driver or the pq2fads driver that found the flash?
       
             Flash is cfi compatible.

>>Which kernel are you using, and are you using arch/ppc or arch/powerpc?
>> -Scott
          
           KERNEL: linux-2.6.10 and we r using arc/ppc 	

Nethra

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