• State Resolved
  • Locked Locked
  • Replies 9 replies
  • Subscribers 101 subscribers
  • Views 5748 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

ECC error during mounting UBIFS volume

Artem Buslov
Prodigy 80 points
Other Parts Discussed in Thread: OMAP-L138, OMAPL138

Hello all!

I work with development board LCDK OMAP-L138. I have some problems with UBIFS on NAND device.

I use Linux kernel 3.3.0 from MCSDK OMAPL138 (processors.wiki.ti.com/.../MCSDK_OMAPL138_User_Guide_Chapter_Tools).

Kernel and rootfs image was built with Buildroot-2014.05 and GCC 4.4.7.

I change following parameters in Linux build configuration file (turn on NAND, MTD, UBIFS and turn off MMC):

MTD [=y];

MTD_NAND [=y];

MTD_NAND_DAVINCI [=y];

MTD_NAND_ECC_BCH [=y];

MTD_NAND_ECC_SMC [=y];

UBIFS_FS [=y];

MTD_UBI [=y];

Linux starts fine and founds MTD partitions.

I try to make UBIFS volume and mount it:

# mtdinfo /dev/mtd3

mtd3

Name: filesystem

Type: nand

Eraseblock size: 131072 bytes, 128.0 KiB

Amount of eraseblocks: 4075 (534118400 bytes, 509.4 MiB)

Minimum input/output unit size: 2048 bytes

Sub-page size: 512 bytes

OOB size: 64 bytes

Character device major/minor: 90:6

Bad blocks are allowed: true

Device is writable: true

#

# ubiformat /dev/mtd3 -s 512 -O 2048

ubiformat: mtd3 (nand), size 534118400 bytes (509.4 MiB), 4075 eraseblocks of 131072 bytes (128.0 KiB), min. I/O size 2048 bytes

libscan: scanning eraseblock 4074 -- 100 % complete

ubiformat: 4071 eraseblocks have valid erase counter, mean value is 0

ubiformat: 4 bad eraseblocks found, numbers: 4071, 4072, 4073, 4074

ubiformat: formatting eraseblock 4074 -- 100 % complete

#

# ubiattach /dev/ubi_ctrl -m 3 -O 2048

UBI: attaching mtd3 to ubi0

UBI: physical eraseblock size: 131072 bytes (128 KiB)

UBI: logical eraseblock size: 126976 bytes

UBI: smallest flash I/O unit: 2048

UBI: sub-page size: 512

UBI: VID header offset: 2048 (aligned 2048)

UBI: data offset: 4096

UBI: max. sequence number: 0

UBI error: ubi_io_read: error -74 (ECC error) while reading 22528 bytes from PEB 0:4096, read 22528 bytes

[<c000d798>] (unwind_backtrace+0x0/0xf4) from [<c01d2e68>] (ubi_io_read+0x150/0x2a4)

[<c01d2e68>] (ubi_io_read+0x150/0x2a4) from [<c01c8cb4>] (ubi_read_volume_table+0x110/0xa80)

[<c01c8cb4>] (ubi_read_volume_table+0x110/0xa80) from [<c01ccd60>] (ubi_attach_mtd_dev+0x678/0xd60)

[<c01ccd60>] (ubi_attach_mtd_dev+0x678/0xd60) from [<c01cd5cc>] (ctrl_cdev_ioctl+0xec/0x168)

[<c01cd5cc>] (ctrl_cdev_ioctl+0xec/0x168) from [<c00932e8>] (do_vfs_ioctl+0x7c/0x5dc)

[<c00932e8>] (do_vfs_ioctl+0x7c/0x5dc) from [<c0093880>] (sys_ioctl+0x38/0x60)

[<c0093880>] (sys_ioctl+0x38/0x60) from [<c0009420>] (ret_fast_syscall+0x0/0x2c)

UBI error: ubi_io_read: error -74 (ECC error) while reading 22528 bytes from PEB 1:4096, read 22528 bytes

[<c000d798>] (unwind_backtrace+0x0/0xf4) from [<c01d2e68>] (ubi_io_read+0x150/0x2a4)

[<c01d2e68>] (ubi_io_read+0x150/0x2a4) from [<c01c8cb4>] (ubi_read_volume_table+0x110/0xa80)

[<c01c8cb4>] (ubi_read_volume_table+0x110/0xa80) from [<c01ccd60>] (ubi_attach_mtd_dev+0x678/0xd60)

[<c01ccd60>] (ubi_attach_mtd_dev+0x678/0xd60) from [<c01cd5cc>] (ctrl_cdev_ioctl+0xec/0x168)

[<c01cd5cc>] (ctrl_cdev_ioctl+0xec/0x168) from [<c00932e8>] (do_vfs_ioctl+0x7c/0x5dc)

[<c00932e8>] (do_vfs_ioctl+0x7c/0x5dc) from [<c0093880>] (sys_ioctl+0x38/0x60)

[<c0093880>] (sys_ioctl+0x38/0x60) from [<c0009420>] (ret_fast_syscall+0x0/0x2c)

UBI error: vtbl_check: bad CRC at record 11: 0x315afa8e, not 0xffffffff

UBI error: vtbl_check: bad CRC at record 11: 0x315afa8e, not 0xffffffff

UBI error: process_lvol: both volume tables are corrupted

UBI error: ubi_attach_mtd_dev: failed to attach by scanning, error -22

ubiattach: error!: cannot attach mtd3

error 22 (Invalid argument)

#



I try another method after Linux rebooting:

# flash_erase /dev/mtd3 0 0

Erasing 128 Kibyte @ 1fcc0000 -- 99 % complete flash_erase: Skipping bad block at 1fce0000

flash_erase: Skipping bad block at 1fd00000

flash_erase: Skipping bad block at 1fd20000

flash_erase: Skipping bad block at 1fd40000

Erasing 128 Kibyte @ 1fd40000 -- 100 % complete

#

# ubiattach /dev/ubi_ctrl -m 3 -O 2048

UBI: attaching mtd3 to ubi0

UBI: physical eraseblock size: 131072 bytes (128 KiB)

UBI: logical eraseblock size: 126976 bytes

UBI: smallest flash I/O unit: 2048

UBI: sub-page size: 512

UBI: VID header offset: 2048 (aligned 2048)

UBI: data offset: 4096

UBI: empty MTD device detected

UBI: max. sequence number: 0

UBI: create volume table (copy #1)

UBI: create volume table (copy #2)

UBI: attached mtd3 to ubi0

UBI: MTD device name: "filesystem"

UBI: MTD device size: 509 MiB

UBI: number of good PEBs: 4071

UBI: number of bad PEBs: 4

UBI: number of corrupted PEBs: 0

UBI: max. allowed volumes: 128

UBI: wear-leveling threshold: 4096

UBI: number of internal volumes: 1

UBI: number of user volumes: 0

UBI: available PEBs: 4027

UBI: total number of reserved PEBs: 44

UBI: number of PEBs reserved for bad PEB handling: 40

UBI: max/mean erase counter: 0/0

UBI: image sequence number: 358316078

UBI: background thread "ubi_bgt0d" started, PID 919

UBI device number 0, total 4071 LEBs (516919296 bytes, 493.0 MiB), available 4027 LEBs (511332352 bytes, 487.6 MiB), LEB size 126976 bytes (124.0 KiB)

#

# ubimkvol /dev/ubi0 -N rootfs -s 20MiB

Volume ID 0, size 166 LEBs (21078016 bytes, 20.1 MiB), LEB size 126976 bytes (124.0 KiB), dynamic, name "rootfs", alignment 1

#

# mkdir /mnt/nand

# mount -t ubifs ubi0:rootfs /mnt/nand

UBIFS: default file-system created

UBI error: ubi_io_read: error -74 (ECC error) while reading 4096 bytes from PEB 4070:4096, read 4096 bytes

[<c000d798>] (unwind_backtrace+0x0/0xf4) from [<c01d2e68>] (ubi_io_read+0x150/0x2a4)

[<c01d2e68>] (ubi_io_read+0x150/0x2a4) from [<c01d1ae4>] (ubi_eba_read_leb+0xa4/0x3fc)

[<c01d1ae4>] (ubi_eba_read_leb+0xa4/0x3fc) from [<c01cf4d4>] (ubi_leb_read+0xdc/0x130)

[<c01cf4d4>] (ubi_leb_read+0xdc/0x130) from [<c012cd6c>] (ubifs_leb_read+0x24/0x88)

[<c012cd6c>] (ubifs_leb_read+0x24/0x88) from [<c012ce68>] (ubifs_read_node+0x98/0x2a0)

[<c012ce68>] (ubifs_read_node+0x98/0x2a0) from [<c0129478>] (ubifs_read_sb_node+0x54/0x78)

[<c0129478>] (ubifs_read_sb_node+0x54/0x78) from [<c012a438>] (ubifs_read_superblock+0xc40/0x15c0)

[<c012a438>] (ubifs_read_superblock+0xc40/0x15c0) from [<c01279a0>] (ubifs_fill_super+0x49c/0x1824)

[<c01279a0>] (ubifs_fill_super+0x49c/0x1824) from [<c0128fbc>] (ubifs_mount+0x294/0x4f0)

[<c0128fbc>] (ubifs_mount+0x294/0x4f0) from [<c00850b8>] (mount_fs+0x14/0xd4)

[<c00850b8>] (mount_fs+0x14/0xd4) from [<c00a090c>] (vfs_kern_mount+0x50/0xc4)

[<c00a090c>] (vfs_kern_mount+0x50/0xc4) from [<c00a09c4>] (do_kern_mount+0x34/0xcc)

[<c00a09c4>] (do_kern_mount+0x34/0xcc) from [<c00a0ba8>] (do_mount+0x14c/0x754)

[<c00a0ba8>] (do_mount+0x14c/0x754) from [<c00a1234>] (sys_mount+0x84/0xc4)

[<c00a1234>] (sys_mount+0x84/0xc4) from [<c0009420>] (ret_fast_syscall+0x0/0x2c)

UBIFS error (pid 923): ubifs_read_node: bad node type (255 but expected 6)

UBIFS error (pid 923): ubifs_read_node: bad node at LEB 0:0, LEB mapping status 1

[<c000d798>] (unwind_backtrace+0x0/0xf4) from [<c012cff8>] (ubifs_read_node+0x228/0x2a0)

[<c012cff8>] (ubifs_read_node+0x228/0x2a0) from [<c0129478>] (ubifs_read_sb_node+0x54/0x78)

[<c0129478>] (ubifs_read_sb_node+0x54/0x78) from [<c012a438>] (ubifs_read_superblock+0xc40/0x15c0)

[<c012a438>] (ubifs_read_superblock+0xc40/0x15c0) from [<c01279a0>] (ubifs_fill_super+0x49c/0x1824)

[<c01279a0>] (ubifs_fill_super+0x49c/0x1824) from [<c0128fbc>] (ubifs_mount+0x294/0x4f0)

[<c0128fbc>] (ubifs_mount+0x294/0x4f0) from [<c00850b8>] (mount_fs+0x14/0xd4)

[<c00850b8>] (mount_fs+0x14/0xd4) from [<c00a090c>] (vfs_kern_mount+0x50/0xc4)

[<c00a090c>] (vfs_kern_mount+0x50/0xc4) from [<c00a09c4>] (do_kern_mount+0x34/0xcc)

[<c00a09c4>] (do_kern_mount+0x34/0xcc) from [<c00a0ba8>] (do_mount+0x14c/0x754)

[<c00a0ba8>] (do_mount+0x14c/0x754) from [<c00a1234>] (sys_mount+0x84/0xc4)

[<c00a1234>] (sys_mount+0x84/0xc4) from [<c0009420>] (ret_fast_syscall+0x0/0x2c)

mount: mounting ubi0:rootfs on /mnt/nand failed: Invalid argument

Does Linux NAND driver for DaVinci compatible device supports ECC properly?

Thanks in advance.

7875.Linux_boot_log.txt
Fullscreen
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
NAND: 512 MiB
MMC: davinci: 0
Bad block table found at page 262080, version 0x01
Bad block table found at page 262016, version 0x01
In: serial
Out: serial
Err: serial
Net: DaVinci-EMAC
Hit any key to stop autoboot: 0
Using DaVinci-EMAC device
TFTP from server 192.168.0.115; our IP address is 192.168.0.21
Filename 'rootfs.ext2.gz'.
Load address: 0xc4000000
Loading: #################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
###########################
done
Bytes transferred = 6119761 (5d6151 hex)
Using DaVinci-EMAC device
TFTP from server 192.168.0.115; our IP address is 192.168.0.21
Filename 'uImage'.
Load address: 0xc0700000
Loading: #################################################################
###############################
done
Bytes transferred = 1395888 (154cb0 hex)
## Booting kernel from Legacy Image at c0700000 ...
Image Name: Linux-3.3.0
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 1395824 Bytes = 1.3 MiB
Load Address: c0008000
Entry Point: c0008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK
Starting kernel ...
Uncompressing Linux... done, booting the kernel.
Booting Linux on physical CPU 0
Linux version 3.3.0 (ubu@ub) (gcc version 4.4.7 (Buildroot 2014.05) ) #16 PREEMPT Wed May 20 14:53:14 MSK 2015
CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177
CPU: VIVT data cache, VIVT instruction cache
Machine: AM18x/OMAP-L138 lcdk board
Memory policy: ECC disabled, Data cache writeback
BUG: mapping for 0x80000000 at 0xfffe0000 out of vmalloc space
DaVinci da850/omap-l138/am18x variant 0x1
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 24320
Kernel command line: console=ttyS2,115200n8 root=/dev/ram0 rw mem=32M@0xc0000000 mem=64M@0xc4000000 initrd=0xc4000000,32M
PID hash table entries: 512 (order: -1, 2048 bytes)
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Memory: 32MB 64MB = 96MB total
Memory: 60916k/60916k available, 37388k reserved, 0K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
vmalloc : 0xc8800000 - 0xff000000 ( 872 MB)
lowmem : 0xc0000000 - 0xc8000000 ( 128 MB)
modules : 0xbf000000 - 0xc0000000 ( 16 MB)
.text : 0xc0008000 - 0xc0346200 (3321 kB)
.init : 0xc0347000 - 0xc0368000 ( 132 kB)
.data : 0xc0368000 - 0xc03887a0 ( 130 kB)
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

 

0876.Linux_config.txt
Fullscreen
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
#
# Automatically generated file; DO NOT EDIT.
# Linux/arm 3.3.0 Kernel Configuration
#
CONFIG_ARM=y
CONFIG_SYS_SUPPORTS_APM_EMULATION=y
CONFIG_GENERIC_GPIO=y
# CONFIG_ARCH_USES_GETTIMEOFFSET is not set
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_KTIME_SCALAR=y
CONFIG_HAVE_PROC_CPU=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_HAVE_LATENCYTOP_SUPPORT=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_HARDIRQS_SW_RESEND=y
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_RWSEM_GENERIC_SPINLOCK=y
CONFIG_ARCH_HAS_CPUFREQ=y
CONFIG_ARCH_HAS_CPU_IDLE_WAIT=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_ZONE_DMA=y
CONFIG_NEED_DMA_MAP_STATE=y
CONFIG_VECTORS_BASE=0xffff0000
CONFIG_ARM_PATCH_PHYS_VIRT=y
CONFIG_GENERIC_BUG=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
CONFIG_HAVE_IRQ_WORK=y
#
# General setup
#
CONFIG_EXPERIMENTAL=y
CONFIG_BROKEN_ON_SMP=y
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_CROSS_COMPILE=""
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_LZO=y
# CONFIG_KERNEL_GZIP is not set
CONFIG_KERNEL_LZMA=y
# CONFIG_KERNEL_LZO is not set
CONFIG_DEFAULT_HOSTNAME="(none)"
# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
CONFIG_POSIX_MQUEUE=y
CONFIG_POSIX_MQUEUE_SYSCTL=y
# CONFIG_BSD_PROCESS_ACCT is not set
# CONFIG_FHANDLE is not set
# CONFIG_TASKSTATS is not set
# CONFIG_AUDIT is not set
CONFIG_HAVE_GENERIC_HARDIRQS=y
#
# IRQ subsystem
#
CONFIG_GENERIC_HARDIRQS=y
CONFIG_HAVE_SPARSE_IRQ=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_IRQ_CHIP=y
# CONFIG_SPARSE_IRQ is not set
#
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

  • 0
    TI__Guru** 116100 points
    Could you please attach the ECC error log.
    Try to boot the board with NFS then try to mount UBIFS partition in linux.
  • 0 in reply to Titusrathinaraj Stalin
    Prodigy 80 points

    Console output is under spoiler.

    ubiattach in first case and mount in second case failed with "UBI error: ubi_io_read: error -74 (ECC error)".

    Have I to send you an extended ECC error log? How can I get it?

    Why NFS? I boot the board via TFTP for debugging purpose.

  • 0 in reply to Artem Buslov
    TI__Mastermind 43955 points
    Hi Artem,

    Please refer to the following TI wiki page.

    processors.wiki.ti.com/.../UBIFS_Support

    I suspect that it could be problme on UBI file creating, you have to create with correct PEB calculation.

    free-electrons.com/.../creating-flashing-ubi-ubifs-images

    Regards,
    Shankari.
  • 0 in reply to Shankari G
    Prodigy 80 points

    Thanks for your answers. I have tried commands from TI wiki but the problem is not resolved.

    Commands from TI wiki page (or ):

    ubiformat /dev/mtd3 -s 512 -O 2048

    ubiattach /dev/ubi_ctrl -m 3 -O 2048

    fails with UBI error -74 (ECC error). Error log in first post.

    An another method from e2e forum:

    flash_erase /dev/mtd3 0 0

    ubiattach /dev/ubi_ctrl -m 3 -O 2048

    ubimkvol /dev/ubi0 -N rootfs -s 20MiB

    mkdir /mnt/nand

    mount -t ubifs ubi0:rootfs /mnt/nand

    These commands raise similar ECC error. Error log in first post.

    Thanks in advance.

  • 0 in reply to Artem Buslov
    Prodigy 80 points

    mtdinfo says:

    # mtdinfo /dev/mtd3
mtd3
Name:                           filesystem
Type:                           nand
Eraseblock size:                131072 bytes, 128.0 KiB
Amount of eraseblocks:          4075 (534118400 bytes, 509.4 MiB)
Minimum input/output unit size: 2048 bytes
Sub-page size:                  512 bytes
OOB size:                       64 bytes
Character device major/minor:   90:6
Bad blocks are allowed:         true
Device is writable:             true



    ubi and ubifs images creating

    mkfs.ubifs -q -r root-fs -m 2048 -e 131072 -c 4075 -o ubifs.img
    ubinize -o ubi.img -m 2048 -p 128KiB -s 512 ubinize.cfg

    ubinize.cfg:
[ubifs]
mode=ubi
image=ubifs.img
vol_id=0
vol_size=450MiB
vol_type=dynamic
vol_name=rootfs
vol_alignment=1
vol_flags=autoresize


    Then

    ubiformat /dev/mtd3 ubi.img
    ubiattach /dev/ubi_ctrl -m 3 -O 2048

    Console output:

    # ubiformat /dev/mtd3 -f ubi.img
ubiformat: mtd3 (nand), size 534118400 bytes (509.4 MiB), 4075 eraseblocks of 131072 bytes (128.0 KiB), min. I/O size 2048 bytes
libscan: scanning eraseblock 4074 -- 100 % complete
ubiformat: 4071 eraseblocks have valid erase counter, mean value is 8
ubiformat: 4 bad eraseblocks found, numbers: 4071, 4072, 4073, 4074
ubiformat: warning!: VID header and data offsets on flash are 2048 and 4096, which is different to requested offsets 512 and 2048
ubiformat: use new offsets 512 and 2048? ubiformat: continue? (y/N) y
ubiformat: use offsets 512 and 2048
ubiformat: flashing eraseblock 16 -- 100 % complete
ubiformat: formatting eraseblock 4074 -- 100 % complete
# ubiattach /dev/ubi_ctrl -m 3 -O 2048
UBI: attaching mtd3 to ubi0
UBI: physical eraseblock size:   131072 bytes (128 KiB)
UBI: logical eraseblock size:    126976 bytes
UBI: smallest flash I/O unit:    2048
UBI: sub-page size:              512
UBI: VID header offset:          2048 (aligned 2048)
UBI: data offset:                4096
UBI error: ubi_io_read: error -74 (ECC error) while reading 512 bytes from PEB 13:2048, read 512 bytes
[<c000d798>] (unwind_backtrace+0x0/0xf4) from [<c01d2e68>] (ubi_io_read+0x150/0x2a4)
[<c01d2e68>] (ubi_io_read+0x150/0x2a4) from [<c01d3128>] (ubi_io_read_vid_hdr+0x48/0x238)
[<c01d3128>] (ubi_io_read_vid_hdr+0x48/0x238) from [<c01d7514>] (process_eb+0x1b4/0x738)
[<c01d7514>] (process_eb+0x1b4/0x738) from [<c01d7ba8>] (ubi_scan+0x110/0xe08)
[<c01d7ba8>] (ubi_scan+0x110/0xe08) from [<c01ccd10>] (ubi_attach_mtd_dev+0x628/0xd60)
[<c01ccd10>] (ubi_attach_mtd_dev+0x628/0xd60) from [<c01cd5cc>] (ctrl_cdev_ioctl+0xec/0x168)
[<c01cd5cc>] (ctrl_cdev_ioctl+0xec/0x168) from [<c00932e8>] (do_vfs_ioctl+0x7c/0x5dc)
[<c00932e8>] (do_vfs_ioctl+0x7c/0x5dc) from [<c0093880>] (sys_ioctl+0x38/0x60)
[<c0093880>] (sys_ioctl+0x38/0x60) from [<c0009420>] (ret_fast_syscall+0x0/0x2c)
UBI error: ubi_io_read: error -74 (ECC error) while reading 126976 bytes from PEB 13:4096, read 126976 bytes
[<c000d798>] (unwind_backtrace+0x0/0xf4) from [<c01d2e68>] (ubi_io_read+0x150/0x2a4)
[<c01d2e68>] (ubi_io_read+0x150/0x2a4) from [<c01d7764>] (process_eb+0x404/0x738)
[<c01d7764>] (process_eb+0x404/0x738) from [<c01d7ba8>] (ubi_scan+0x110/0xe08)
[<c01d7ba8>] (ubi_scan+0x110/0xe08) from [<c01ccd10>] (ubi_attach_mtd_dev+0x628/0xd60)
[<c01ccd10>] (ubi_attach_mtd_dev+0x628/0xd60) from [<c01cd5cc>] (ctrl_cdev_ioctl+0xec/0x168)
[<c01cd5cc>] (ctrl_cdev_ioctl+0xec/0x168) from [<c00932e8>] (do_vfs_ioctl+0x7c/0x5dc)
[<c00932e8>] (do_vfs_ioctl+0x7c/0x5dc) from [<c0093880>] (sys_ioctl+0x38/0x60)
[<c0093880>] (sys_ioctl+0x38/0x60) from [<c0009420>] (ret_fast_syscall+0x0/0x2c)
UBI error: validate_ec_hdr: bad VID header offset 512, expected 2048
UBI error: validate_ec_hdr: bad EC header
[<c000d798>] (unwind_backtrace+0x0/0xf4) from [<c01d24d0>] (validate_ec_hdr+0x140/0x194)
[<c01d24d0>] (validate_ec_hdr+0x140/0x194) from [<c01d3490>] (ubi_io_read_ec_hdr+0x178/0x228)
[<c01d3490>] (ubi_io_read_ec_hdr+0x178/0x228) from [<c01d73bc>] (process_eb+0x5c/0x738)
[<c01d73bc>] (process_eb+0x5c/0x738) from [<c01d7ba8>] (ubi_scan+0x110/0xe08)
[<c01d7ba8>] (ubi_scan+0x110/0xe08) from [<c01ccd10>] (ubi_attach_mtd_dev+0x628/0xd60)
[<c01ccd10>] (ubi_attach_mtd_dev+0x628/0xd60) from [<c01cd5cc>] (ctrl_cdev_ioctl+0xec/0x168)
[<c01cd5cc>] (ctrl_cdev_ioctl+0xec/0x168) from [<c00932e8>] (do_vfs_ioctl+0x7c/0x5dc)
[<c00932e8>] (do_vfs_ioctl+0x7c/0x5dc) from [<c0093880>] (sys_ioctl+0x38/0x60)
[<c0093880>] (sys_ioctl+0x38/0x60) from [<c0009420>] (ret_fast_syscall+0x0/0x2c)
UBI error: ubi_io_read_ec_hdr: validation failed for PEB 18
UBI error: ubi_attach_mtd_dev: failed to attach by scanning, error -22
ubiattach: error!: cannot attach mtd3
           error 22 (Invalid argument)
#

  • 0 in reply to Artem Buslov
    Prodigy 80 points

    I made experiment. I wrote one page in the size of 2048 byte two times by u-boot and by linux. I checked what was written and that ECC.

    U-boot sent this commands:

    nand erase 0x540000 0x800
nand dump.obb 0x540000
tftp 0xc0700000 192.168.0.115:nand_page
nand write 0xc0700000 0x540000 0x800
nand dump.obb 0x540000

Page 00540000 dump:
        6a 68 73 64 6b 66 6a 77  65 75 68 66 61 73 68 64
        61 6a 73 64 68 66 6c 75  77 79 67 65 68 66 67 61
        73 64 66 6a 35 39 67 68  61 73 39 68 66 6a 35 61
        73 64 68 66 35 6c 39 6b  6a 73 35 61 32 68 64 66
        35 68 61 75 73 77 34 37  69 39 35 31 35 32 37 33
        39 35 34 31 6f 35 38 33  31 34 35 39 35 6f 38 32
        79 6f 77 65 38 72 79 6f  75 68 61 73 6c 68 66 6c
        75 69 61 73 64 35 39 73  6a 69 72 68 66 32 70 71
        72 39 38 79 68 32 61 77  39 75 69 72 79 68 61 38
        69 77 6f 79 68 75 32 69  73 39 6f 32 61 79 68 66
        35 38 32 77 70 79 68 66  61 79 68 66 70 38 32 73
        77 68 66 35 61 73 64 32  32 35 39 35 6f 69 61 73
        68 66 75 77 67 61 75 67  62 76 6b 6c 6a 78 7a 62
        63 76 6a 7a 6e 78 63 6a  76 68 61 73 75 69 68 66
        6c 6a 73 68 64 67 66 6b  6a 68 66 67 6c 3b 64 6b
        68 67 66 3b 6a 61 73 68  64 61 73 68 64 6f 66 68
        3b 77 65 75 69 68 75 68  73 64 66 68 3b 6a 68 73
        65 69 77 68 69 75 68 64  66 6b 6a 62 64 64 6a 73
        68 66 6b 6a 68 73 67 65  68 67 73 6b 6a 64 68 67
        66 68 61 73 64 67 66 79  6a 61 77 67 65 6a 68 66
        61 62 73 64 68 62 76 66  33 32 73 31 76 66 36 35
        68 32 73 64 62 76 66 6d  68 73 32 64 66 35 36 68
        32 67 77 68 66 67 73 31  34 64 68 66 35 30 33 68
        66 6a 62 67 6f 79 69 73  77 72 67 6f 77 69 75 67
        72 66 6f 69 61 77 67 66  65 61 77 67 68 66 6c 69
        61 75 77 79 68 33 38 35  68 35 61 75 69 66 35 68
        39 6c 61 75 69 73 64 68  66 35 69 32 37 61 75 77
        68 39 72 38 69 35 61 68  75 69 67 66 35 61 73 39
        6c 75 69 64 66 67 68 6c  61 39 67 68 77 72 69 35
        75 61 65 77 67 69 75 36  72 66 67 61 6c 36 68 67
        66 35 39 6c 61 73 66 6c  6a 61 73 68 64 66 6c 35
        68 6a 67 73 64 67 68 73  6c 75 61 77 75 65 68 77
        6a 68 73 64 6b 66 6a 77  65 75 68 66 61 73 68 64
        61 6a 73 64 68 66 6c 75  77 79 67 65 68 66 67 61
        73 64 66 6a 35 39 67 68  61 73 39 68 66 6a 35 61
        73 64 68 66 35 6c 39 6b  6a 73 35 61 32 68 64 66
        35 68 61 75 73 77 34 37  69 39 35 31 35 32 37 33
        39 35 34 31 6f 35 38 33  31 34 35 39 35 6f 38 32
        79 6f 77 65 38 72 79 6f  75 68 61 73 6c 68 66 6c
        75 69 61 73 64 35 39 73  6a 69 72 68 66 32 70 71
        72 39 38 79 68 32 61 77  39 75 69 72 79 68 61 38
        69 77 6f 79 68 75 32 69  73 39 6f 32 61 79 68 66
        35 38 32 77 70 79 68 66  61 79 68 66 70 38 32 73
        77 68 66 35 61 73 64 32  32 35 39 35 6f 69 61 73
        68 66 75 77 67 61 75 67  62 76 6b 6c 6a 78 7a 62
        63 76 6a 7a 6e 78 63 6a  76 68 61 73 75 69 68 66
        6c 6a 73 68 64 67 66 6b  6a 68 66 67 6c 3b 64 6b
        68 67 66 3b 6a 61 73 68  64 61 73 68 64 6f 66 68
        3b 77 65 75 69 68 75 68  73 64 66 68 3b 6a 68 73
        65 69 77 68 69 75 68 64  66 6b 6a 62 64 64 6a 73
        68 66 6b 6a 68 73 67 65  68 67 73 6b 6a 64 68 67
        66 68 61 73 64 67 66 79  6a 61 77 67 65 6a 68 66
        61 62 73 64 68 62 76 66  33 32 73 31 76 66 36 35
        68 32 73 64 62 76 66 6d  68 73 32 64 66 35 36 68
        32 67 77 68 66 67 73 31  34 64 68 66 35 30 33 68
        66 6a 62 67 6f 79 69 73  77 72 67 6f 77 69 75 67
        72 66 6f 69 61 77 67 66  65 61 77 67 68 66 6c 69
        61 75 77 79 68 33 38 35  68 35 61 75 69 66 35 68
        39 6c 61 75 69 73 64 68  66 35 69 32 37 61 75 77
        68 39 72 38 69 35 61 68  75 69 67 66 35 61 73 39
        6c 75 69 64 66 67 68 6c  61 39 67 68 77 72 69 35
        75 61 65 77 67 69 75 36  72 66 67 61 6c 36 68 67
        66 35 39 6c 61 73 66 6c  6a 61 73 68 64 66 6c 35
        68 6a 67 73 64 67 68 73  6c 75 61 77 75 65 68 77
        6a 68 73 64 6b 66 6a 77  65 75 68 66 61 73 68 64
        61 6a 73 64 68 66 6c 75  77 79 67 65 68 66 67 61
        73 64 66 6a 35 39 67 68  61 73 39 68 66 6a 35 61
        73 64 68 66 35 6c 39 6b  6a 73 35 61 32 68 64 66
        35 68 61 75 73 77 34 37  69 39 35 31 35 32 37 33
        39 35 34 31 6f 35 38 33  31 34 35 39 35 6f 38 32
        79 6f 77 65 38 72 79 6f  75 68 61 73 6c 68 66 6c
        75 69 61 73 64 35 39 73  6a 69 72 68 66 32 70 71
        72 39 38 79 68 32 61 77  39 75 69 72 79 68 61 38
        69 77 6f 79 68 75 32 69  73 39 6f 32 61 79 68 66
        35 38 32 77 70 79 68 66  61 79 68 66 70 38 32 73
        77 68 66 35 61 73 64 32  32 35 39 35 6f 69 61 73
        68 66 75 77 67 61 75 67  62 76 6b 6c 6a 78 7a 62
        63 76 6a 7a 6e 78 63 6a  76 68 61 73 75 69 68 66
        6c 6a 73 68 64 67 66 6b  6a 68 66 67 6c 3b 64 6b
        68 67 66 3b 6a 61 73 68  64 61 73 68 64 6f 66 68
        3b 77 65 75 69 68 75 68  73 64 66 68 3b 6a 68 73
        65 69 77 68 69 75 68 64  66 6b 6a 62 64 64 6a 73
        68 66 6b 6a 68 73 67 65  68 67 73 6b 6a 64 68 67
        66 68 61 73 64 67 66 79  6a 61 77 67 65 6a 68 66
        61 62 73 64 68 62 76 66  33 32 73 31 76 66 36 35
        68 32 73 64 62 76 66 6d  68 73 32 64 66 35 36 68
        32 67 77 68 66 67 73 31  34 64 68 66 35 30 33 68
        66 6a 62 67 6f 79 69 73  77 72 67 6f 77 69 75 67
        72 66 6f 69 61 77 67 66  65 61 77 67 68 66 6c 69
        61 75 77 79 68 33 38 35  68 35 61 75 69 66 35 68
        39 6c 61 75 69 73 64 68  66 35 69 32 37 61 75 77
        68 39 72 38 69 35 61 68  75 69 67 66 35 61 73 39
        6c 75 69 64 66 67 68 6c  61 39 67 68 77 72 69 35
        75 61 65 77 67 69 75 36  72 66 67 61 6c 36 68 67
        66 35 39 6c 61 73 66 6c  6a 61 73 68 64 66 6c 35
        68 6a 67 73 64 67 68 73  6c 75 61 77 75 65 68 77
        6a 68 73 64 6b 66 6a 77  65 75 68 66 61 73 68 64
        61 6a 73 64 68 66 6c 75  77 79 67 65 68 66 67 61
        73 64 66 6a 35 39 67 68  61 73 39 68 66 6a 35 61
        73 64 68 66 35 6c 39 6b  6a 73 35 61 32 68 64 66
        35 68 61 75 73 77 34 37  69 39 35 31 35 32 37 33
        39 35 34 31 6f 35 38 33  31 34 35 39 35 6f 38 32
        79 6f 77 65 38 72 79 6f  75 68 61 73 6c 68 66 6c
        75 69 61 73 64 35 39 73  6a 69 72 68 66 32 70 71
        72 39 38 79 68 32 61 77  39 75 69 72 79 68 61 38
        69 77 6f 79 68 75 32 69  73 39 6f 32 61 79 68 66
        35 38 32 77 70 79 68 66  61 79 68 66 70 38 32 73
        77 68 66 35 61 73 64 32  32 35 39 35 6f 69 61 73
        68 66 75 77 67 61 75 67  62 76 6b 6c 6a 78 7a 62
        63 76 6a 7a 6e 78 63 6a  76 68 61 73 75 69 68 66
        6c 6a 73 68 64 67 66 6b  6a 68 66 67 6c 3b 64 6b
        68 67 66 3b 6a 61 73 68  64 61 73 68 64 6f 66 68
        3b 77 65 75 69 68 75 68  73 64 66 68 3b 6a 68 73
        65 69 77 68 69 75 68 64  66 6b 6a 62 64 64 6a 73
        68 66 6b 6a 68 73 67 65  68 67 73 6b 6a 64 68 67
        66 68 61 73 64 67 66 79  6a 61 77 67 65 6a 68 66
        61 62 73 64 68 62 76 66  33 32 73 31 76 66 36 35
        68 32 73 64 62 76 66 6d  68 73 32 64 66 35 36 68
        32 67 77 68 66 67 73 31  34 64 68 66 35 30 33 68
        66 6a 62 67 6f 79 69 73  77 72 67 6f 77 69 75 67
        72 66 6f 69 61 77 67 66  65 61 77 67 68 66 6c 69
        61 75 77 79 68 33 38 35  68 35 61 75 69 66 35 68
        39 6c 61 75 69 73 64 68  66 35 69 32 37 61 75 77
        68 39 72 38 69 35 61 68  75 69 67 66 35 61 73 39
        6c 75 69 64 66 67 68 6c  61 39 67 68 77 72 69 35
        75 61 65 77 67 69 75 36  72 66 67 61 6c 36 68 67
        66 35 39 6c 61 73 66 6c  6a 61 73 68 64 66 6c 35
        68 6a 67 73 64 67 68 73  6c 75 61 77 75 65 68 77
OOB:
        ff ff ff ff ff ff ff ff
        ff ff ff ff ff ff ff ff
        ff ff ff ff ff ff ff ff
        d1 80 ea ee 44 42 43 55
        6a a6 d1 80 ea ee 44 42
        43 55 6a a6 d1 80 ea ee
        44 42 43 55 6a a6 d1 80
        ea ee 44 42 43 55 6a a6


    Linux sent this commands:

    tftp -g -r nand_page 192.168.0.115
flash_erase /dev/mtd3 0 0
nandwrite -s 0x2a0000 --input-size=2048 /dev/mtd3 nand_page
nanddump -p -o -s 0x2a0000 -l 2048 /dev/mtd3

ECC failed: 0
ECC corrected: 0
Number of bad blocks: 4
Number of bbt blocks: 0
Block size 131072, page size 2048, OOB size 64
Dumping data starting at 0x002a0000 and ending at 0x002a0800...
0x002a0000: 6a 68 73 64 6b 66 6a 77 65 75 68 66 61 73 68 64
0x002a0010: 61 6a 73 64 68 66 6c 75 77 79 67 65 68 66 67 61
0x002a0020: 73 64 66 6a 35 39 67 68 61 73 39 68 66 6a 35 61
0x002a0030: 73 64 68 66 35 6c 39 6b 6a 73 35 61 32 68 64 66
0x002a0040: 35 68 61 75 73 77 34 37 69 39 35 31 35 32 37 33
0x002a0050: 39 35 34 31 6f 35 38 33 31 34 35 39 35 6f 38 32
0x002a0060: 79 6f 77 65 38 72 79 6f 75 68 61 73 6c 68 66 6c
0x002a0070: 75 69 61 73 64 35 39 73 6a 69 72 68 66 32 70 71
0x002a0080: 72 39 38 79 68 32 61 77 39 75 69 72 79 68 61 38
0x002a0090: 69 77 6f 79 68 75 32 69 73 39 6f 32 61 79 68 66
0x002a00a0: 35 38 32 77 70 79 68 66 61 79 68 66 70 38 32 73
0x002a00b0: 77 68 66 35 61 73 64 32 32 35 39 35 6f 69 61 73
0x002a00c0: 68 66 75 77 67 61 75 67 62 76 6b 6c 6a 78 7a 62
0x002a00d0: 63 76 6a 7a 6e 78 63 6a 76 68 61 73 75 69 68 66
0x002a00e0: 6c 6a 73 68 64 67 66 6b 6a 68 66 67 6c 3b 64 6b
0x002a00f0: 68 67 66 3b 6a 61 73 68 64 61 73 68 64 6f 66 68
0x002a0100: 3b 77 65 75 69 68 75 68 73 64 66 68 3b 6a 68 73
0x002a0110: 65 69 77 68 69 75 68 64 66 6b 6a 62 64 64 6a 73
0x002a0120: 68 66 6b 6a 68 73 67 65 68 67 73 6b 6a 64 68 67
0x002a0130: 66 68 61 73 64 67 66 79 6a 61 77 67 65 6a 68 66
0x002a0140: 61 62 73 64 68 62 76 66 33 32 73 31 76 66 36 35
0x002a0150: 68 32 73 64 62 76 66 6d 68 73 32 64 66 35 36 68
0x002a0160: 32 67 77 68 66 67 73 31 34 64 68 66 35 30 33 68
0x002a0170: 66 6a 62 67 6f 79 69 73 77 72 67 6f 77 69 75 67
0x002a0180: 72 66 6f 69 61 77 67 66 65 61 77 67 68 66 6c 69
0x002a0190: 61 75 77 79 68 33 38 35 68 35 61 75 69 66 35 68
0x002a01a0: 39 6c 61 75 69 73 64 68 66 35 69 32 37 61 75 77
0x002a01b0: 68 39 72 38 69 35 61 68 75 69 67 66 35 61 73 39
0x002a01c0: 6c 75 69 64 66 67 68 6c 61 39 67 68 77 72 69 35
0x002a01d0: 75 61 65 77 67 69 75 36 72 66 67 61 6c 36 68 67
0x002a01e0: 66 35 39 6c 61 73 66 6c 6a 61 73 68 64 66 6c 35
0x002a01f0: 68 6a 67 73 64 67 68 73 6c 75 61 77 75 65 68 77
0x002a0200: 6a 68 73 64 6b 66 6a 77 65 75 68 66 61 73 68 64
0x002a0210: 61 6a 73 64 68 66 6c 75 77 79 67 65 68 66 67 61
0x002a0220: 73 64 66 6a 35 39 67 68 61 73 39 68 66 6a 35 61
0x002a0230: 73 64 68 66 35 6c 39 6b 6a 73 35 61 32 68 64 66
0x002a0240: 35 68 61 75 73 77 34 37 69 39 35 31 35 32 37 33
0x002a0250: 39 35 34 31 6f 35 38 33 31 34 35 39 35 6f 38 32
0x002a0260: 79 6f 77 65 38 72 79 6f 75 68 61 73 6c 68 66 6c
0x002a0270: 75 69 61 73 64 35 39 73 6a 69 72 68 66 32 70 71
0x002a0280: 72 39 38 79 68 32 61 77 39 75 69 72 79 68 61 38
0x002a0290: 69 77 6f 79 68 75 32 69 73 39 6f 32 61 79 68 66
0x002a02a0: 35 38 32 77 70 79 68 66 61 79 68 66 70 38 32 73
0x002a02b0: 77 68 66 35 61 73 64 32 32 35 39 35 6f 69 61 73
0x002a02c0: 68 66 75 77 67 61 75 67 62 76 6b 6c 6a 78 7a 62
0x002a02d0: 63 76 6a 7a 6e 78 63 6a 76 68 61 73 75 69 68 66
0x002a02e0: 6c 6a 73 68 64 67 66 6b 6a 68 66 67 6c 3b 64 6b
0x002a02f0: 68 67 66 3b 6a 61 73 68 64 61 73 68 64 6f 66 68
0x002a0300: 3b 77 65 75 69 68 75 68 73 64 66 68 3b 6a 68 73
0x002a0310: 65 69 77 68 69 75 68 64 66 6b 6a 62 64 64 6a 73
0x002a0320: 68 66 6b 6a 68 73 67 65 68 67 73 6b 6a 64 68 67
0x002a0330: 66 68 61 73 64 67 66 79 6a 61 77 67 65 6a 68 66
0x002a0340: 61 62 73 64 68 62 76 66 33 32 73 31 76 66 36 35
0x002a0350: 68 32 73 64 62 76 66 6d 68 73 32 64 66 35 36 68
0x002a0360: 32 67 77 68 66 67 73 31 34 64 68 66 35 30 33 68
0x002a0370: 66 6a 62 67 6f 79 69 73 77 72 67 6f 77 69 75 67
0x002a0380: 72 66 6f 69 61 77 67 66 65 61 77 67 68 66 6c 69
0x002a0390: 61 75 77 79 68 33 38 35 68 35 61 75 69 66 35 68
0x002a03a0: 39 6c 61 75 69 73 64 68 66 35 69 32 37 61 75 77
0x002a03b0: 68 39 72 38 69 35 61 68 75 69 67 66 35 61 73 39
0x002a03c0: 6c 75 69 64 66 67 68 6c 61 39 67 68 77 72 69 35
0x002a03d0: 75 61 65 77 67 69 75 36 72 66 67 61 6c 36 68 67
0x002a03e0: 66 35 39 6c 61 73 66 6c 6a 61 73 68 64 66 6c 35
0x002a03f0: 68 6a 67 73 64 67 68 73 6c 75 61 77 75 65 68 77
0x002a0400: 6a 68 73 64 6b 66 6a 77 65 75 68 66 61 73 68 64
0x002a0410: 61 6a 73 64 68 66 6c 75 77 79 67 65 68 66 67 61
0x002a0420: 73 64 66 6a 35 39 67 68 61 73 39 68 66 6a 35 61
0x002a0430: 73 64 68 66 35 6c 39 6b 6a 73 35 61 32 68 64 66
0x002a0440: 35 68 61 75 73 77 34 37 69 39 35 31 35 32 37 33
0x002a0450: 39 35 34 31 6f 35 38 33 31 34 35 39 35 6f 38 32
0x002a0460: 79 6f 77 65 38 72 79 6f 75 68 61 73 6c 68 66 6c
0x002a0470: 75 69 61 73 64 35 39 73 6a 69 72 68 66 32 70 71
0x002a0480: 72 39 38 79 68 32 61 77 39 75 69 72 79 68 61 38
0x002a0490: 69 77 6f 79 68 75 32 69 73 39 6f 32 61 79 68 66
0x002a04a0: 35 38 32 77 70 79 68 66 61 79 68 66 70 38 32 73
0x002a04b0: 77 68 66 35 61 73 64 32 32 35 39 35 6f 69 61 73
0x002a04c0: 68 66 75 77 67 61 75 67 62 76 6b 6c 6a 78 7a 62
0x002a04d0: 63 76 6a 7a 6e 78 63 6a 76 68 61 73 75 69 68 66
0x002a04e0: 6c 6a 73 68 64 67 66 6b 6a 68 66 67 6c 3b 64 6b
0x002a04f0: 68 67 66 3b 6a 61 73 68 64 61 73 68 64 6f 66 68
0x002a0500: 3b 77 65 75 69 68 75 68 73 64 66 68 3b 6a 68 73
0x002a0510: 65 69 77 68 69 75 68 64 66 6b 6a 62 64 64 6a 73
0x002a0520: 68 66 6b 6a 68 73 67 65 68 67 73 6b 6a 64 68 67
0x002a0530: 66 68 61 73 64 67 66 79 6a 61 77 67 65 6a 68 66
0x002a0540: 61 62 73 64 68 62 76 66 33 32 73 31 76 66 36 35
0x002a0550: 68 32 73 64 62 76 66 6d 68 73 32 64 66 35 36 68
0x002a0560: 32 67 77 68 66 67 73 31 34 64 68 66 35 30 33 68
0x002a0570: 66 6a 62 67 6f 79 69 73 77 72 67 6f 77 69 75 67
0x002a0580: 72 66 6f 69 61 77 67 66 65 61 77 67 68 66 6c 69
0x002a0590: 61 75 77 79 68 33 38 35 68 35 61 75 69 66 35 68
0x002a05a0: 39 6c 61 75 69 73 64 68 66 35 69 32 37 61 75 77
0x002a05b0: 68 39 72 38 69 35 61 68 75 69 67 66 35 61 73 39
0x002a05c0: 6c 75 69 64 66 67 68 6c 61 39 67 68 77 72 69 35
0x002a05d0: 75 61 65 77 67 69 75 36 72 66 67 61 6c 36 68 67
0x002a05e0: 66 35 39 6c 61 73 66 6c 6a 61 73 68 64 66 6c 35
0x002a05f0: 68 6a 67 73 64 67 68 73 6c 75 61 77 75 65 68 77
0x002a0600: 6a 68 73 64 6b 66 6a 77 65 75 68 66 61 73 68 64
0x002a0610: 61 6a 73 64 68 66 6c 75 77 79 67 65 68 66 67 61
0x002a0620: 73 64 66 6a 35 39 67 68 61 73 39 68 66 6a 35 61
0x002a0630: 73 64 68 66 35 6c 39 6b 6a 73 35 61 32 68 64 66
0x002a0640: 35 68 61 75 73 77 34 37 69 39 35 31 35 32 37 33
0x002a0650: 39 35 34 31 6f 35 38 33 31 34 35 39 35 6f 38 32
0x002a0660: 79 6f 77 65 38 72 79 6f 75 68 61 73 6c 68 66 6c
0x002a0670: 75 69 61 73 64 35 39 73 6a 69 72 68 66 32 70 71
0x002a0680: 72 39 38 79 68 32 61 77 39 75 69 72 79 68 61 38
0x002a0690: 69 77 6f 79 68 75 32 69 73 39 6f 32 61 79 68 66
0x002a06a0: 35 38 32 77 70 79 68 66 61 79 68 66 70 38 32 73
0x002a06b0: 77 68 66 35 61 73 64 32 32 35 39 35 6f 69 61 73
0x002a06c0: 68 66 75 77 67 61 75 67 62 76 6b 6c 6a 78 7a 62
0x002a06d0: 63 76 6a 7a 6e 78 63 6a 76 68 61 73 75 69 68 66
0x002a06e0: 6c 6a 73 68 64 67 66 6b 6a 68 66 67 6c 3b 64 6b
0x002a06f0: 68 67 66 3b 6a 61 73 68 64 61 73 68 64 6f 66 68
0x002a0700: 3b 77 65 75 69 68 75 68 73 64 66 68 3b 6a 68 73
0x002a0710: 65 69 77 68 69 75 68 64 66 6b 6a 62 64 64 6a 73
0x002a0720: 68 66 6b 6a 68 73 67 65 68 67 73 6b 6a 64 68 67
0x002a0730: 66 68 61 73 64 67 66 79 6a 61 77 67 65 6a 68 66
0x002a0740: 61 62 73 64 68 62 76 66 33 32 73 31 76 66 36 35
0x002a0750: 68 32 73 64 62 76 66 6d 68 73 32 64 66 35 36 68
0x002a0760: 32 67 77 68 66 67 73 31 34 64 68 66 35 30 33 68
0x002a0770: 66 6a 62 67 6f 79 69 73 77 72 67 6f 77 69 75 67
0x002a0780: 72 66 6f 69 61 77 67 66 65 61 77 67 68 66 6c 69
0x002a0790: 61 75 77 79 68 33 38 35 68 35 61 75 69 66 35 68
0x002a07a0: 39 6c 61 75 69 73 64 68 66 35 69 32 37 61 75 77
0x002a07b0: 68 39 72 38 69 35 61 68 75 69 67 66 35 61 73 39
0x002a07c0: 6c 75 69 64 66 67 68 6c 61 39 67 68 77 72 69 35
0x002a07d0: 75 61 65 77 67 69 75 36 72 66 67 61 6c 36 68 67
0x002a07e0: 66 35 39 6c 61 73 66 6c 6a 61 73 68 64 66 6c 35
0x002a07f0: 68 6a 67 73 64 67 68 73 6c 75 61 77 75 65 68 77
  OOB Data: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
  OOB Data: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
  OOB Data: ff ff ff ff ff ff ff ff 4a ae e4 4a ae e4 4a ae
  OOB Data: e4 4a ae e4 ff ff ff ff ff ff ff ff ff ff ff ff

    Conclusion

    Data is the same but ECC is different. This can be the cause of error mounting NAND to Linux. That should we do to make ECC the same?

     

  • 0 in reply to Artem Buslov
    Prodigy 80 points

    I found out that U-boot and Linux NAND drivers use different Error Correction Code algorithms. U-boot uses 4-bit hardware ECC algorithm and Linux uses 1-bit hardware ECC algorithm. One of the comments to Linux NAND driver source file mentions that this driver doesn’t support 4-bit ECC for 16-bit flash.

    In spite of that, I made an attempt to adapt the driver’s NAND algorithm to 4-bit mode (in the file board-omapl138-lcdk.c)

    I wrote a sample NAND data page by Linux and then tried to read it with Linux and then with U-boot. The data I read with Linux was incorrect, and the data I read with U-boot was just the same as the initial data page. The issue is that Linux driver with 4-bit ECC on writes Data and OOB correctly, but reads Data incorrectly and OOB - correctly.

    So wouldn’t you please tell me if you got any Linux patch or driver for 4-bit hardware ECC to be used with DaVinchi? I’d be happy to have it in my disposal.

    Thanks in advance.

  • 0 in reply to Artem Buslov
    Prodigy 80 points
    The NAND EMIFA latencies in Linux driver were configured for clock frequency 300 MHz but actually run on 456 MHz. I resolved the issue by switching Fclk to 300 MHz.
  • 0 in reply to Artem Buslov
    TI__Guru** 116100 points
    Hi,
    Sounds good.
    We are glad that you solved the problem.
    Thanks for your update.