2008-05-15 22:12:06     Can the uClinux-dist-2008R1-RC8 support large page nand flash ?

2008-05-15 22:12:06     Can the uClinux-dist-2008R1-RC8 support large page nand flash ?

w w (CHINA)

Message: 55876   

hi, all

I download uClinux-dist-2008R1-RC8, compile it and run. My nand flash is hynix-hy27uf081g2m(128M large page nand flash). I used yaffs2 on the nand flash.

root> mount -t yaffs2 /dev/mtdblock3 /home

When I copy, delete or write file in the nand flash,  the  error is like this:

**>> Block 148 needs retiring

**>> yaffs write required 2 attempts

**>> Block 149 needs retiring

**>> yaffs write required 2 attempts

**>> Block 148 retired

**>> Block 149 retired

So the block is bad, and it can't be used any more.

I don't modify any source file about nand flash or yaffs2 file system.

Can the uClinux-dist-2008R1-RC8 support large page nand flash ?

thanks.

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2008-05-16 03:31:05     Re: Can the uClinux-dist-2008R1-RC8 support large page nand flash ?

Andrea Federico Grisotto (ITALY)

Message: 55882   

uClinux 2008R1-RC8 support yaffs2 and so support large nand block.

Before use the nand memory remember to clean the memory:

1) eraseall /dev/mtd3

2) mount -t yaffs2 /dev/mtdblock3 /home

it's not strange to have bad block when you use nand flash memory don't worry about that.

Yaffs2 mark bad block and doesn't use it.

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2008-05-19 06:57:21     Re: Can the uClinux-dist-2008R1-RC8 support large page nand flash ?

w w (CHINA)

Message: 56007   

thank you, but I run the cmd eraseall  /dev/mtd3, before the cmd mount -t yaffs2 /dev/mtdblock3 /home but when I copy files on /home the err like this occured:

**>> Block 148 needs retiring

**>> yaffs write required 2 attempts

**>> Block 149 needs retiring

**>> yaffs write required 2 attempts

**>> Block 148 retired

**>> Block 149 retired

what's wrong ?

thank you.

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2008-05-19 07:39:31     Re: Can the uClinux-dist-2008R1-RC8 support large page nand flash ?

Andrea Federico Grisotto (ITALY)

Message: 56008   

can you tell me exactly step by step which command you use?

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2008-05-20 03:34:17     Re: Can the uClinux-dist-2008R1-RC8 support large page nand flash ?

w w (CHINA)

Message: 56024   

thank you sir, this is my cmd:

1)

root:/> dmesg | more

Linux version 2.6.22.18-ADI-2008R1-svn (root@ippbx) (gcc version 4.1.2 (ADI svn)

) #1 Fri May 16 09:31:49 CST 2008

Hardware Trace Active and Enabled

...

...

NAND device: Manufacturer ID: 0xad, Chip ID: 0xf1 (Hynix NAND 128MiB 3,3V 8-bit)

Scanning device for bad blocks

Bad eraseblock 0 at 0x00000000

Bad eraseblock 3 at 0x00060000

...

Bad eraseblock 148 at 0x01280000

Bad eraseblock 333 at 0x029a0000

Bad eraseblock 768 at 0x06000000

Creating 1 MTD partitions on "NAND 128MiB 3,3V 8-bit":

0x00000000-0x08000000 : "linux fs"

...

...

2)

root:/> uname -a

Linux blackfin 2.6.22.18-ADI-2008R1-svn #1 Fri May 16 09:31:49 CST 2008 blackfin

unknown

3)

root:/> eraseall /dev/mtd3

4)

root:/> mount  -t yaffs2 /dev/mtdblock3  /home

yaffs: dev is 32505859 name is "mtdblock3"

yaffs: Attempting MTD mount on 31.3, "mtdblock3"

block 1 is bad

block 4 is bad

...

5)

root:/> cd /home

6)

root:/home> wget http://192.168.139.105:8010/yansl/httpd.tar

Connecting to 192.168.139.105:8010 [192.168.139.105:8010]

httpd.tar              9% |**                           |   660 KB 00:00:10 ETA*

*>> Block 53 needs retiring

**>> yaffs write required 2 attempts

**>> Block 53 retired

httpd.tar             17% |****                         |  1282 KB 00:00:09 ETA*

*>> Block 62 needs retiring

**>> yaffs write required 2 attempts

**>> Block 62 retired

**>> Block 67 needs retiring

**>> yaffs write required 2 attempts

**>> Block 68 needs retiring

**>> yaffs write required 2 attempts

**>> Block 67 retired

**>> Block 68 retired

httpd.tar             25% |*******                      |  1860 KB 00:00:08 ETA

root:/home>

I exit with (Ctrl+C), because it can made the nand flash all bad.

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2008-05-20 03:50:20     Re: Can the uClinux-dist-2008R1-RC8 support large page nand flash ?

Andrea Federico Grisotto (ITALY)

Message: 56026   

HI,

your commands are correct but I have a doubt , I'm not a yaffs expert but from your log I see

your block 0 is a bad block: "Bad eraseblock 0 at 0x00000000"

I don't know if the block 0 have the same mean of sector 0 in a harddisk.

This can be the reason of your problem, but I repeat I am not a yaffs expert.

can you try with another board?

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2008-05-20 04:02:47     Re: Can the uClinux-dist-2008R1-RC8 support large page nand flash ?

Andrea Federico Grisotto (ITALY)

Message: 56028   

Hi think your nand memory doesn't have large page block, try to mount using yaffs not yaffs2.

or let linux to choose the correct filesystem (yaffs or yaffs2):

1)make linux_menuconfig

File systems  --->

Miscellaneous filesystems  --->

[* ]     Autoselect yaffs2 format

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2008-05-20 04:03:58     Re: Can the uClinux-dist-2008R1-RC8 support large page nand flash ?

Michael Hennerich (GERMANY)

Message: 56029   

Yaffs2 supports large as well as small page size NAND flash.

What is your target hardware?

How do you connect the NAND flash?

Are you sure the Ready/Busy signal is hooked up ?

-Michael

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2008-06-02 07:24:10     Re: Can the uClinux-dist-2008R1-RC8 support large page nand flash ?

w w (CHINA)

Message: 56561   

thank you Michael !

my board use bf533 and st nand512w3a. when I use uClinux-dist-2006R2-RC2, there is no errors, but when I use uClinux-dist-2008R1-RC8, there are errors.

I think there is no errors in my hardware design, because there is no errors under uClinux-dist-2006R2-RC2, so I think the errors occured because there are errors/bugs in uClinux-dist-2008R1-RC8. whether the yaffs2 and nand flash was tested before the uClinux-dist-2008R1-RC8 releaseed ?

thank you !