[uClinux-dev] Does jffs2 block must start as 0x1985?

[Yue Han]

Chime in easily!

I have made my flash_eraseall use mtd-snapshot-20050217 and mips-linux-gcc
cross compiler, but I got this error message as below:
=========
# ./flash_eraseall /dev/mtd2
MTD_open
MTD_ioctl
MTD_ioctl
Invalid ioctl 80084d0b (MEMGETINFO = 40204d01)

./flash_eraseall /dev/mtd2: MTD get bad block failed: Inappropriate ioctl
for device
=========
I don't know how to fix it.



2007/3/22, Aubrey Li <aubrey.adi at gmail.com>:
>
> On 3/22/07, Yue Han <voyage.hy at gmail.com> wrote:
> > Greetings
> > My question as the subject.
> >
> > Here is the course what give me the question.
> >
> > When is use my jffs2 fs, the console  always tell me:
> > ========
> >     jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at
> 0x000e0000:
> > 0x0101 instead
> >     JFFS2: Erase block at 0x000e0000 is not formatted. It will be erased
> > ========
> > As the result, my flash cann't do any write command at all:
> > ========
> >     Last[2] is 1, datum is 85
> >     Write clean marker to block at 0x000e0000 failed: -5
> > ========
> >
> > My jffs2.img about 14 blocks(64K), it is 0xe0000 in to HEX.
> > I's using 4M norflash, BASE_ADDRESS is 0xbfc00000.
> > I'll put the jffs2.img to 0x40000.
> > For test, I only give the os(mtd1) one block free space.
> > So the mtd1 has 14+1 blocks.(0xf0000).
> >
> > The console information as below:
> > =========
> >     number of CFI chips: 1
> >     Creating 3 MTD partitions on "Flash":
> >     0x00000000-0x00040000 : "Bootloader"
> >     mtd: Giving out device 0 to Bootloader
> >     0x00040000-0x00130000 : "os"
> >     mtd: Giving out device 1 to os
> >     0x00130000-0x00400000 : "bkup"
> > =========
> >
> > I dumped the flash at block 0xd0000:(0xbfcd10000 == 0xbfc00000 + 0x40000
> +
> > 0xd0000 , means this block has my jffs2.img )
> >
> >                             Memory Dump Result
> >
> ==============================================================================
> > 0xbfd10000 : 19 85 20 03 00 00 00 0c f0 60 dc 98 19 85 e0 02
> > 0xbfd10010 : 00 00 06 80 6e bc 83 11 00 00 00 2c 00 00 00 08
> > 0xbfd10020 : 00 00 81 ed 00 00 00 00 00 00 72 5c 45 b2 40 58
> > 0xbfd10030 : 45 b2 40 58 45 b2 40 58 00 00 69 c4 00 00 06 3c
> > 0xbfd10040 : 00 00 06 3c 00 00 00 00 d4 fd e1 04 d4 b0 ad b4
> > 0xbfd10050 : 8c 21 ba 16 a9 02 e4 a1 7f 6e 48 b9 2b 82 ea dd
> > 0xbfd10060 : 48 34 5a 18 d5 7a 54 89 0f ce 77 75 e5 67 95 cc
> > 0xbfd10070 : 88 9f ec d4 b0 c7 9e e1 59 a9 66 6c 7c 56 c2 55
> > 0xbfd10080 : 84 4d ee ae b8 41 a8 ed 28 a7 35 41 32 0b 9b 66
> > 0xbfd10090 : 70 66 bb 2b a5 e2 c7 e0 2b f8 d8 be 52 e9 ee 62
> > 0xbfd100a0 : 69 7f 71 df 81 42 e9 9e 89 fd 77 ef 29 e1 da 75
> > 0xbfd100b0 : ad 59 db c9 c7 ed 9d 74 4e 5a 47 90 ec fb 7f 4c
> > 0xbfd100c0 : aa 65 fe 89 ae 96 4a e2 c8 4f 9b b0 d6 5a e6 77
> > 0xbfd100d0 : 7b af f5 f5 86 68 90 cc 44 ab ee a6 0a 72 5f bf
> > 0xbfd100e0 : 3d e8 9f ed 03 5f 03 d7 b6 6c da bc e5 86 5f bb
> > 0xbfd100f0 : 71 70 28 f7 eb 37 6d bd f9 96 e1 5b 7f e3 43 1f
> >
> ==============================================================================
> >
> > then I dumped 0xe0000 where the error message placed:(0xbfd20000 ==
> > 0xbfc00000 + 0x40000 + 0xe0000)
> >
> >                             Memory Dump Result
> >
> ==============================================================================
> > 0xbfd20000 : 01 01 ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> > 0xbfd20010 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> > 0xbfd20020 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> > 0xbfd20030 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> > 0xbfd20040 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> > 0xbfd20050 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> > 0xbfd20060 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> > 0xbfd20070 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> > 0xbfd20080 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> > 0xbfd20090 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> > 0xbfd200a0 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> > 0xbfd200b0 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> > 0xbfd200c0 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> > 0xbfd200d0 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> > 0xbfd200e0 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> > 0xbfd200f0 : ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> >
> ==============================================================================
> >
> > DOSE the bit mask error(0x1985) is the primary criminal who caused my
> jffs2
> > fs can't write?
> >
> > Is anyone can give me some advice? I am gonna crazy about this!!!
> >
>
> You jffs2 partition should be erased firstly.
>
> -Aubrey
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