* RE: FW: Zlib compress
[not found] <23111.1021290954@redhat.com>
@ 2002-05-22 10:28 ` Steve Tsai
2002-05-22 13:06 ` David Woodhouse
0 siblings, 1 reply; 3+ messages in thread
From: Steve Tsai @ 2002-05-22 10:28 UTC (permalink / raw)
To: 'David Woodhouse'; +Cc: Linux MTD mailing list
David,
I can not use alignment trap with SamsungS3C4510 which is a ARM7TDMI
processor, because ARM7TDMI does not have coprocessor 15 using in
alignment trap codes. Now I try to use get_unaligned to fix the
alignment problem in my platform and I can write the file into the
flash, but when I read the file, I got decompressing error, then
unalignment exception. How many codes do I need to modify?
inflate returned -5
Unhandled fault: alignment exception (13) at 0x00000001
fault-common.c 96
Internal error: Oops: 0
CPU: 0
pc : [<00028ad0>] lr : [<00053c7c>] Not tainted
sp : 002a5b3c ip : 001e7a88 fp : 002a5b54
r10: 003bd000 r9 : 00373000 r8 : 003bd000
r7 : 00373000 r6 : 00001000 r5 : 002a5bc8 r4 : 002399e8
r3 : 00000239 r2 : 00239a00 r1 : 00239a00 r0 : 00008e40
Flags: nzCv IRQs on FIQs on Mode SVC_32 Segment kernel
Control: 0
Process telnet (pid: 19, stackpage=002a5000)
Stack:
002a5b20: 00053c7c 00028ad0 20000013
ffffffff 002399
Steve Tsai
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: FW: Zlib compress
2002-05-22 10:28 ` FW: Zlib compress Steve Tsai
@ 2002-05-22 13:06 ` David Woodhouse
2002-05-23 5:52 ` Steve Tsai
0 siblings, 1 reply; 3+ messages in thread
From: David Woodhouse @ 2002-05-22 13:06 UTC (permalink / raw)
To: Steve Tsai; +Cc: Linux MTD mailing list
startec@ms11.hinet.net said:
> I can not use alignment trap with SamsungS3C4510 which is a ARM7TDMI
> processor, because ARM7TDMI does not have coprocessor 15 using in
> alignment trap codes. Now I try to use get_unaligned to fix the
> alignment problem in my platform and I can write the file into the
> flash, but when I read the file, I got decompressing error, then
> unalignment exception. How many codes do I need to modify?
I'm not aware of any related to JFFS2 or MTD other than the ones in the
flash driver. Did you decode the oops you got? Where was it from?
--
dwmw2
^ permalink raw reply [flat|nested] 3+ messages in thread
* RE: FW: Zlib compress
2002-05-22 13:06 ` David Woodhouse
@ 2002-05-23 5:52 ` Steve Tsai
0 siblings, 0 replies; 3+ messages in thread
From: Steve Tsai @ 2002-05-23 5:52 UTC (permalink / raw)
To: 'David Woodhouse'; +Cc: Linux MTD mailing list
I replace zlib.c and I can read the file now.
I only replace datum = *(__u16*)buf with datum =
get_unaligned((__u16*)buf) in cfi_amdstd_write funtion. Is is enough? I
read the discussion about alignment trap and mtd in armlinux mail list,
and it seems that I should modify more codes.
Steve Tsai
startec@ms11.hinet.net said:
> I can not use alignment trap with SamsungS3C4510 which is a ARM7TDMI
> processor, because ARM7TDMI does not have coprocessor 15 using in
> alignment trap codes. Now I try to use get_unaligned to fix the
> alignment problem in my platform and I can write the file into the
> flash, but when I read the file, I got decompressing error, then
> unalignment exception. How many codes do I need to modify?
I'm not aware of any related to JFFS2 or MTD other than the ones in the
flash driver. Did you decode the oops you got? Where was it from?
--
dwmw2
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http://lists.infradead.org/mailman/listinfo/linux-mtd/
^ permalink raw reply [flat|nested] 3+ messages in thread
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2002-05-22 10:28 ` FW: Zlib compress Steve Tsai
2002-05-22 13:06 ` David Woodhouse
2002-05-23 5:52 ` Steve Tsai
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