i.mx28: fails to use jffs2

[hwo]

Hi all, Qiang_FSL​

I have a Winbond nor flash on my board, W25Q256.  After seeing the site: How to enable SPI NOR boot for i.MX28 (Spansion s25fl256s)  I want to use the jffs2 too.

But when mounting jffs2 during kernel starting, I keep seeing lots of jffs2 error,

mxs-rtc mxs-rtc.0: setting system clock to 1970-01-01 00:00:34 UTC (34)

VFS: Mounted root (jffs2 filesystem) on device 31:1.

Freeing init memory: 176K

JFFS2 notice: (999) read_dnode: node CRC failed on dnode at 0x1be007c: read 0xb08d1054, calculated 0x8b624504

JFFS2 notice: (1) read_dnode: node CRC failed on dnode at 0x1b8000c: read 0xb08d1054, calculated 0x8b624504

JFFS2 warning: (999) jffs2_do_read_inode_internal: no data nodes found for ino #2

Returned error for crccheck of ino #2. Expect badness...

JFFS2 notice: (999) jffs2_get_inode_nodes: Node header CRC failed at 0x1be01ec. {5e78,975c,e5148c7f,d9dfc719}

Node totlen on flash (0xb91b6f6d) != totlen from node ref (0x0000004c)

JFFS2 warning: (999) jffs2_do_read_inode_internal: no data nodes found for ino #4

Returned error for crccheck of ino #4. Expect badness...

JFFS2 notice: (999) jffs2_get_inode_nodes: Node header CRC failed at 0x1be02b4. {5e78,5794,c8e353ef,cbaf9d11}

Node totlen on flash (0x55546c69) != totlen from node ref (0x0000004c)

JFFS2 warning: (999) jffs2_do_read_inode_internal: no data nodes found for ino #5

Returned error for crccheck of ino #5. Expect badness...

JFFS2 notice: (1) read_dnode: node CRC failed on dnode at 0x17be924: read 0x3e803e8, calculated 0x9920efca

JFFS2 notice: (999) jffs2_get_inode_nodes: Node header CRC failed at 0x1be0448. {5e78,d62c,dd943879,5b7007ff}

Node totlen on flash (0xebd63f87) != totlen from node ref (0x0000004c)

JFFS2 warning: (999) jffs2_do_read_inode_internal: no data nodes found for ino #7

Returned error for crccheck of ino #7. Expect badness...

Data CRC d8358eb0 != calculated CRC 0e70dd3e for node at 017591a8

JFFS2 notice: (999) jffs2_get_inode_nodes: Node header CRC failed at 0x1be0510. {5e78,975c,d5956c0f,fbcfc015}

Node totlen on flash (0x5754684f) != totlen from node ref (0x0000004c)

JFFS2 warning: (999) jffs2_do_read_inode_internal: no data nodes found for ino #8

Returned error for crccheck of ino #8. Expect badness...

JFFS2 notice: (999) jffs2_get_inode_nodes: Node header CRC failed at 0x1be05d4. {5e78,d3ac,415b4c21,a3f1c71c}

Node totlen on flash (0x695c686d) != totlen from node ref (0x0000004c)

JFFS2 warning: (999) jffs2_do_read_inode_internal: no data nodes found for ino #9

But I can log into the system. However, when try to execute command like ls, cd, I still see the same error.

JFFS2 notice: (1088) read_dnode: node CRC failed on dnode at 0x1b30474: read 0x3afc5558, calculated 0xb169a063

JFFS2 warning: (1088) jffs2_do_read_inode_internal: no data nodes found for ino #154

iget() failed for ino #154

(none) login: root

login[1088]: root login on 'ttyAM0'

JFFS2 notice: (1088) read_dnode: node CRC failed on dnode at 0x1b4f42c: read 0x000000, calculated 0x28966911

Node totlen on flash (0x00000044) != totlen from node ref (0x000001b4)

~ #

~ # ls

JFFS2 notice: (1088) read_dnode: node CRC failed on dnode at 0x1b50bc8: read 0x1b62df47, calculated 0x3809b5af

JFFS2 notice: (1022) jffs2_get_inode_nodes: Node header CRC failed at 0x16ecd18. {008d,0000,00000000,00000007}

JFFS2 warning: (1088) jffs2_do_read_inode_internal: no data nodes found for ino #90

iget() failed for ino #90

-sh: ls: Input/output error

~ # JFFS2 warning: (1022) jffs2_do_read_inode_internal: no data nodes found for ino #374

Returned error for crccheck of ino #374. Expect badness...

Process of updating firmware is normal, and the kernel partition, ucl.xml is as following

Creating 2 MTD partitions on "mx28_nor_flash":

0x000000000000-0x000000400000 : "kernel"     ----total 4M

0x000000400000-0x000002000000 : "rootfs"      ----total 28M

<LIST name="SPI-NOR (kernel and rootfs)" desc="zyx test">

<CMD type="boot" body="Recovery" file="updater.sb" if="HabDisable">Booting update firmware.</CMD>

<CMD type="boot" body="Recovery" file="updater_ivt.sb" if="HabEnable">Booting update firmware.</CMD>

<CMD type="find" body="Updater" timeout="180"/>

<CMD type="push" body="mknod class/mtd,mtd0,/dev/mtd0"/>

<CMD type="push" body="mknod class/mtd,mtd1,/dev/mtd1"/>

<CMD type="push" body="mknod block,mtdblock1,/dev/mtdblock1,block"/>

<CMD type="push" body="$ flash_eraseall /dev/mtd0">Erasing kernel partition</CMD>

<CMD type="push" body="send" file="files/imx28_ivt_linux.sb">Sending kernel</CMD>

<CMD type="push" body="$ dd if=$FILE of=/dev/mtd0">Programming kernel</CMD>

<CMD type="push" body="$ flash_eraseall -j /dev/mtd1">Erasing rootfs partition</CMD>

<CMD type="push" body="$ mkdir -p /mnt/mtdblock1"/>

<CMD type="push" body="$ mount -t jffs2 /dev/mtdblock1 /mnt/mtdblock1"/>

<CMD type="push" body="pipe tar -jxv -C /mnt/mtdblock1" file="files/rootfs.tar.bz2">Sending and writting rootfs</CMD>

<CMD type="push" body="frf">Finishing rootfs write</CMD>

<CMD type="push" body="$ umount /mnt/mtdblock1">Unmounting rootfs partition</CMD>

<CMD type="push" body="$ echo Update Complete!">Done</CMD>

</LIST>

Thanks in advance!

[qiang_li-mpu_se]

I think you should use raw data to test your SPI NOR driver first, for example, dd a 32MB file to your SPI NOR, then read back to check if the data is correct or not?

[hwo]

I succeed in enter my ramdisk. I will try your method. Thanks!

[hwo]

Thanks Li,

Can I put the dd cmd in my ucl.xml and how to do that?

I wonder if I can read the flash raw data into my local PC(Windows).

Regards,

[qiang_li-mpu_se · Accepted solution]

You can put your rootfs to SD card or RAMDISK, then test the SPI NOR.

[hwo]

Thanks for your advice, Li

I tried another simple way. Since I can enter the system, I use several commands to test the read and write.

touch test

echo "ni hao“ > test

sync

sync

vi test

and in the vi editor, I can see the characters written by echo.

I don't know if this is enough to test the flash driver.