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i.MX287_evk attaching mtd1 to ubi0 failed

Question asked by h k on Nov 18, 2015
Latest reply on Nov 18, 2015 by igorpadykov

Kernel version is 2.6.35.3, and the board has a ST micro nand flash, totally 64MB(512+16 per page).

But when I burn the board, it fails to attach mtd1 to ubi0 subsystem. Here is the debug trace:

 

i.MX GPMI NFC

NFC: Version 1, 8-chip GPMI and BCH

Boot ROM: Version 1, Single-chip boot area, block mark swapping supported

Scanning for NAND Flash chips...

NAND device: Manufacturer ID: 0x20, Chip ID: 0x76 (ST Micro NAND 64MiB 3,3V 8-bit)

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NAND Flash Device Information

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Manufacturer      : ST Micro (0x20)

Device Code       : 0x76

Cell Technology   : SLC

Chip Size         : 64 MiB

Pages per Block   : 32

Page Geometry     : 512+16

ECC Strength      : 8 bits

ECC Size          : 512 B

Data Setup Time   : 35 ns

Data Hold Time    : 15 ns

Address Setup Time: 0 ns

GPMI Sample Delay : 6 ns

tREA              : Unknown

tRLOH             : Unknown

tRHOH             : Unknown

Description       : NAND512W3A2

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Physical Geometry

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Chip Count             : 1

Page Data Size in Bytes: 512 (0x200)

Page OOB Size in Bytes : 16

Block Size in Bytes    : 16384 (0x4000)

Block Size in Pages    : 32 (0x20)

Chip Size in Bytes     : 67108864 (0x4000000)

Chip Size in Pages     : 131072 (0x20000)

Chip Size in Blocks    : 4096 (0x1000)

Medium Size in Bytes   : 67108864 (0x4000000)

 

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NFC Geometry

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ECC Algorithm          : BCH

ECC Strength           : 8

Page Size in Bytes     : 528

Metadata Size in Bytes : 10

ECC Chunk Size in Bytes: 512

ECC Chunk Count        : 1

Payload Size in Bytes  : 512

Auxiliary Size in Bytes: 16

Auxiliary Status Offset: 12

Block Mark Byte Offset : 502

Block Mark Bit Offset  : 0

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Boot ROM Geometry

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Boot Area Count            : 1

Boot Area Size in Bytes    : 20971520 (0x1400000)

Stride Size in Pages       : 64

Search Area Stride Exponent: 2

Scanning device for bad blocks

Boot area protection is enabled.

Creating 2 MTD partitions on "gpmi-nfc-main":

0x000000000000-0x000001400000 : "gpmi-nfc-0-boot"

0x000001400000-0x000004000000 : "gpmi-nfc-general-use"

UBI: attaching mtd1 to ubi0

UBI: physical eraseblock size:   16384 bytes (16 KiB)

UBI: logical eraseblock size:    15360 bytes

UBI: smallest flash I/O unit:    512

UBI: VID header offset:          512 (aligned 512)

UBI: data offset:                1024                                                         <------------------------------------burn process stops here

 

 

according to the setup, BCH page layout is:

PAGE_SIZE = 528

META_SIZE = 10

DATA0_SEIZE = 512

ECC0 = 4

DATAN_SIZE = 512

ECCN = 4

NBLOCKS = 0

, which I think is OK.

So, what's the possible reason for attaching mtd fails? Wrong configuration of nand flash?

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