Re: MTD Driver for NOR NAND

And this is a WindowsCE newsgroup. You need to repost in a newsgroup that
is relevant to your problem...

--
Dean Ramsier - eMVP
BSQUARE Corporation


"Karthick V" <Karthick V@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:56B0CCF6-C1CB-46C3-AF94-306A6D11057F@xxxxxxxxxxxxxxxx
This is a typical linux embedded system

Regards
V Karthick.

"Luca Calligaris" wrote:

JFFS2 && PowerPC <-> Windows CE...?

--

Luca Calligaris
l.calligaris.nospam@xxxxxxxxxxxxxxxxxx
www.eurotech.it

"Thanga" <kthangavadivel@xxxxxxxxx> ha scritto nel messaggio
news:8f130244-7f52-4888-bf3e-3725013f39a5@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I am using PowerPC MPC8315ERDB and 512MB NAND (2K Page size) and 64 MB
NOR flash. Both flash drivers are handled by MTD driver. First I
mounted NOR flash then run the application from NOR flash it working
fine. After that I mounted NAND flash separately then run the
application from NAND flash it working fine.
After that both flashes are mounted as a JFFS2 file system. When some
application is getting executed in NOR FLASH and by the time if I
access NAND FLASH driver means that application is crashed and also i
am getting error message from NAND Driver. The following error
message:
/******** Crash Message is *******/
Kernel BUG at c01148e4 [verbose debug info unavailable]
Oops: Exception in kernel mode, sig: 5 [#1]
Oops: Machine check, sig: 7 [#1]
MPC831x RDB
Modules linked in: cpldgpio
NIP: c01148e4 LR: c01148d8 CTR: 00000001
REGS: df179c10 TRAP: 0700 Not tainted (2.6.24.3-rt3)
MSR: 00029032 <EE,ME,IR,DR> CR: 22000222 XER: 00000000
TASK = df142030[2059] 'WebApp' THREAD: df178000
GPR00: 00000001 df179cc0 df142030 00000048 00000002 00000001 00000000
00004000
GPR08: 00000037 c03680c4 04cf9f1d c0370000 22000222 100e4fa4 1fff8000
df517940
GPR16: 10010000 00000000 0000107f 00000000 00000000 c02b5820 df057460
dfab0200
GPR24: 00000000 0000107f 000000e3 0000007f 0000107f df5178a8 df517940
c07548e0
Call Trace:
[df179cc0] [c01148d8] (unreliable)
[df179d00] [c0045c40]
[df179d90] [c004630c]
[df179e00] [c00465b4]
[df179e30] [c00674d0]
[df179ef0] [c0067f9c]
[df179f10] [c0068634]
[df179f40] [c000f73c]
--- Exception: c01Instruction dump:
817d008c 82eb0174 90e10008 7f47d378 80a90014 809d0020 81090000
54a56026
4bf06765 801f0000 68000008 5400effe <0f000000> 2f9a1000 3b800000
419e0008
---[ end trace 61505f74d1808b6e ]---

/*******The Driver Error message is*********/
end_request: I/O error, dev mtdblock8, sector 1048
end_request: I/O error, dev mtdblock8, sector 1048
end_request: I/O error, dev mtdblock8, sector 1056
end_request: I/O error, dev mtdblock8, sector 1056

this message is printed contineously.
here mtdblock8 is NAND partition.
Please help on this ??

Regards
Thangavadivel





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