Hi Greg,
Here is the console dump. It happens when I use the telnetd, but
actually it can happens when any programming running on uClinux (like
PID 0 swapper process). Is there any other information I can provide
about this crash?
*** ILLEGAL INSTRUCTION *** FORMAT=4
Current process id is 42
BAD KERNEL TRAP: 00000000
PC: [<4001fdac>]
SR: 2200 SP: 4197c9ac a2: 41ca49c0
d0: 00000000 d1: 00000100 d2: 00000000 d3: 00000000
d4: 00000068 d5: 02000000 a0: fc030000 a1: 403bfb90
Process telnetd (pid: 42, stackpage=418e4040)
Stack from 4197c9e0:
40002000 400cd720 00000000 00000000 00000068 401961b6 00000004
41ca49c0
40042cfa 4185b090 41cad000 4197caf0 40042d2a 00000068 41cad000
00000068
41ca49c0 00000edb 40165200 40042dee 00000068 41ca49c0 4197cb30
00000040
40196542 40196558 40020992 00000068 00000800 40023976 00000068
4197ca60
0000000c 00000800 00000040 00000edb 401961b6 403b84a0 403bfb90
40196542
00000000 ffffffff 00000000 41a02004 400e9d1c 00000003 41cad000
401961ce
Call Trace:
[<400ec094>] [<400ec170>] [<4002d1b4>] [<4002d214>]
[<4002d248>] [<4002d4c4>] [<40020998>] [<40023976>]
[<40038cbe>] [<4005ee86>] [<40107da0>] [<40144094>]
[<400df418>] [<4005e920>] [<400a144c>] [<4005ee12>]
[<4002534a>] [<4011f890>] [<4011f632>] [<4011f8ac>]
[<400a12a2>] [<4011fd40>] [<400e4f84>] [<400e4d84>]
[<400e4e96>] [<400e4eb4>] [<4011fada>] [<400fe094>]
[<400fe4ae>] [<400e9bfa>] [<400e4f84>] [<400e4d84>]
[<400e4e96>] [<400ea51e>] [<4002d1b4>] [<4002d1f6>]
[<400a144c>] [<4002d214>] [<4002d248>] [<4002d4c4>]
[<40020998>] [<40023976>] [<4005eb6c>] [<4005eb7e>]
[<4005ea58>] [<400e9bfa>] [<400e4f84>] [<400e4d84>]
[<400e4e96>] [<400ea51e>] [<4002d1b4>] [<4002d1f6>]
[<4002d214>] [<4002d248>] [<4002d4c4>] [<40020998>]
[<40023976>] [<40020bb0>] [<400364f4>] [<40137ea8>]
[<40023828>]
Kernel panic - not syncing: Aiee, killing interrupt handler!
Cheers
Xin Xie
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Greg Ungerer
Sent: Wednesday, November 21, 2007 3:02 PM
To: uClinux development list
Subject: Re: [uClinux-dev] Is there dma support in coldfire m532x?
Hi Xin,
Xin Xie wrote:
> I am new to the Coldfire uClinux platform. Currently I have a m5329evb
> board, and using the 2.6.23-uc0 kernel and 4.1.1 m68-elf-gcc.
>
> I did some stress test on the board. One interesting finding is under
> the ping flood (ping -f board), the kernel went to crash. I also
tested
Can you send the crash console dump?
> the 2.6.17-uc1 kernel, the kernel did not crash but become very slow,
> and I measured a 24ms worst case to wake up a user process from a char
> driver.
>
> I am suspecting if the Ethernet driver has DMA support on m5329
uClinux.
> I checked both kernel, and could not find any DMA options available.
Can
> anyone provide any insights?
The FEC ethernet driver is DMA driven. That is the only way it
can work with that ethernet device. It doesn't use the generic
ColdFire DMA engine though. See the code for it in drivers/net/fec.c
Regards
Greg
------------------------------------------------------------------------
Greg Ungerer -- Chief Software Dude EMAIL: [EMAIL PROTECTED]
Secure Computing Corporation PHONE: +61 7 3435 2888
825 Stanley St, FAX: +61 7 3891 3630
Woolloongabba, QLD, 4102, Australia WEB: http://www.SnapGear.com
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