PROCESSOR-SDK-AM335X: How to deal with the bad block of NAND Flash ?

Went Cao

Genius 5550 points

Part Number: PROCESSOR-SDK-AM335X

Dear All

How to deal with the bad block of NAND Flash ? Which one of below ways ?

1. Skip bad block ?

2. Replace the table ?

3. Forced to copy ?

4. Block burning mode ?

5. Others ?

over 5 years ago

0 Biser Gatchev-XID over 5 years ago

TI__Guru**** 393215 points

Hi,

What software is this? Which version?

0 Went Cao over 5 years ago in reply to Biser Gatchev-XID

Genius 5550 points

Hi Biser

It's the PROCESSOR-SDK-LINUX-AM335X.
I get from the link:http: //www.ti.com/tool/PROCESSOR-SDK-AM335X

0 Marcus Cooksey over 5 years ago in reply to Went Cao

TI__Genius 9510 points

Please refer to NAND vendor user guide on recommendations to handle bad blocks. For example:

file:///C:/Users/a0271467/Downloads/tn2959_bbm_in_nand_flash.pdf

0 Went Cao over 5 years ago in reply to Marcus Cooksey

Genius 5550 points

Dear Marcus

I can't download the file, this link is local which I could download.

0 Marcus Cooksey over 5 years ago in reply to Went Cao

TI__Genius 9510 points

tn2959_bbm_in_nand_flash.pdf

0 user5828988 over 5 years ago in reply to Marcus Cooksey

Prodigy 50 points

Dear Marcus

Thank you for your file.

In the file, it's said "blocks can be marked as bad and new blocks allocated using two general methods", could you tell me which method is used to "PROCESSOR-SDK-AM335X" ?

0 Marcus Cooksey over 5 years ago in reply to user5828988

TI__Genius 9510 points

When burning the filesystem with bad blocks the follow message was returned, thus indicating "skip block" method is used.

NAND erase.part: device 0 offset 0x180000, size 0x1fe80000
Skipping bad block at 0x1ff80000
Skipping bad block at 0x1ffa0000
Skipping bad block at 0x1ffc0000
Skipping bad block at 0x1ffe0000

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PROCESSOR-SDK-AM335X: How to deal with the bad block of NAND Flash ?