Hi, Dave
On 3/27/2015 8:41 PM, Rajiv Dave wrote:
Hi Josh,
That worked! Many thanks.
You are welcome ;-)
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?
If you are using the github/linux-2.6.39-at91 branch, you need change the arch/arm/mach-at91/board-sam9263ek.c to set .ecc_mode as NAND_ECC_NONE.
Best Regards, Josh Wu
Regards
Rajiv Dave
Disign Consultants t: +44 (0) 207 544 8486 w: www.disignconsultants.com
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From: Josh Wu josh.wu@atmel.com Date: Fri, 27 Mar 2015 10:52:29 +0800 To: Rajiv Dave rajivd@disignconsultants.com, u-boot@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
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