[U-Boot] NAND Flash with Internal Hardware ECC

[Rajiv Dave]

Hi Josh,

That worked! Many thanks.

The next issue is that the Kernel now needs to be re-built, we are using
2.6.xx, do you have any ideas on what to change in the Kernel to make it
work with the HW ECC NAND?


Regards

Rajiv Dave

Disign Consultants
t: +44 (0) 207 544 8486
w: www.disignconsultants.com

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> From: Josh Wu <josh.wu at atmel.com>
> Date: Fri, 27 Mar 2015 10:52:29 +0800
> To: Rajiv Dave <rajivd at disignconsultants.com>, <u-boot at lists.denx.de>
> Subject: Re: [U-Boot] NAND Flash with Internal Hardware ECC
> 
> Hello, Dave
> 
> On 3/26/2015 4:45 PM, Rajiv Dave wrote:
>> Hi,
>> 
>> We are using an Atmel AT91SAM9263 processor which supports 1 Bit ECC flash
>> devices that have Block 0 Valid with no ECC. These devices are now obsolete.
>> 
>> We have fitted a board with a MT29F2G08ABAEWP-E-E, which has an internal
>> Hardware ECC engine. Would you know how provide support for this device
>> within U-Boot?
> As your flash have internal ecc, you should disable the AT91SAM9263 ecc.
> 
> it means you need to set the nand->ecc.mode to NAME_ECC_NONE
> in the U-Boot if you already enabled internal Hardware ECC.
> 
> 
> Best Regards,
> Josh Wu
>> 
>> The following output is generated by a board fitted with the NAND Flash with
>> Internal Hardware ECC
>> 
>> RomBOOT
>> 
>> U-Boot 1.3.4 (Sep 19 2013 - 15:10:38)
>> 
>> DRAM:  64 MB
>> NAND:  256 MiB
>> No Valid Environment Area Found
>> In:    serial
>> Out:   serial
>> Err:   serial
>> Net:   macb0
>> macb0: Starting autonegotiation...
>> macb0: Autonegotiation timed out (status=0x7849)
>> macb0: link down (status: 0x7849)
>> Hit any key to stop autoboot:  3  2  1  0
>> 
>> NAND read: device 0 offset 0x200000, size 0x17e16c
>>   1565036 bytes read: ERROR
>> ## Booting kernel from Legacy Image at 22200000 ...
>>     Image Name:   Linux-2.6.30
>>     Image Type:   ARM Linux Kernel Image (uncompressed)
>>     Data Size:    1564972 Bytes =  1.5 MB
>>     Load Address: 20008000
>>     Entry Point:  20008000
>>     Verifying Checksum ... Bad Data CRC
>> ERROR: can't get kernel image!
>> U-Boot>
>> 
>> Regards
>> 
>> Rajiv Dave
>> 
>> Disign Consultants
>> t: +44 (0) 207 544 8486
>> w: www.disignconsultants.com
>> 
>> This message and any attachment are confidential and may be privileged or
>> otherwise protected from disclosure. If you are not the intended recipient,
>> please telephone or email the sender and delete this message and any
>> attachment from your system. If you are not the intended recipient you must
>> not copy this message or attachment or disclose the contents to any other
>> person.
>> 
>> 
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>