* [U-Boot-Users] MPC8270 Custom Board: Stack Pointer Corruption
@ 2003-10-20 14:43 mss59 at att.net
2003-10-20 20:32 ` Wolfgang Denk
0 siblings, 1 reply; 2+ messages in thread
From: mss59 at att.net @ 2003-10-20 14:43 UTC (permalink / raw)
To: u-boot
I am working on an MPC8270 based custom board. u-boot is ported from EP8260
board version. RAM is 128M, flash is 16M.
After u-boot relocates code in the ram, sometimes, stack pointer gets
corrupted. And sometimes, I get bus fault which overwirtes all u-boot area in
the RAM with some pattern like this
bus fault
07f6bcd0 : 02001111 07f6be18 07f6bc68 11111111 ...........h....
07f6bce0 : 42757320 4661756c 74204020 30782020 Bus Fault @ 0x
07f6bcf0 : 20202020 20202020 20202020 20202020
07f6bd00 : 20202020 20202020 20202020 20202020
07f6bd10 : 20202020 20202020 20202020 20202020
07f6bd20 : 20202020 20202020 20202020 20202020
07f6bd30 : 20202020 20202020 20202020 20202020
07f6bd40 : 20202020 20202020 20202020 20202020
07f6bd50 : 20202020 20202020 20202020 20202020
07f6bd60 : 20202020 20202020 20202020 20202020
07f6bd70 : 20202020 20202020 20202020 20202020
07f6bd80 : 20202020 20202020 20202020 20202020
07f6bd90 : 20202020 20202020 20202020 20202020
07f6bda0 : 20202020 20202020 20202020 20202020
07f6bdb0 : 20202020 20202020 20202020 20202020
07f6bdc0 : 20202020 20202020 20202020 20202020 ---> This patters is written
till the end of ram.
BDImn8270>rd
GPR00: 00000000 07f6bbd0 ffdfffff 08000004
GPR04: 00000000 00000010 07f58a9d 00000007
GPR08: 00000001 00000000 00000000 00000007
GPR12: 00000020 00400000 07ffd000 080cc000
GPR16: fffdffff bffdffff ff7fffff fff7ef5f
GPR20: 48000002 07f6bad0 00000000 07fcf098
GPR24: 07f6bce0 00000001 07fecdbc 07f6bfb4
GPR28: 07f6bcee 07f6bf70 07ffdcb8 07ff2ed8
CR : 48000002 MSR: 00000000
Any ideas.....
Thanks
Ravi.
^ permalink raw reply [flat|nested] 2+ messages in thread
* [U-Boot-Users] MPC8270 Custom Board: Stack Pointer Corruption
2003-10-20 14:43 [U-Boot-Users] MPC8270 Custom Board: Stack Pointer Corruption mss59 at att.net
@ 2003-10-20 20:32 ` Wolfgang Denk
0 siblings, 0 replies; 2+ messages in thread
From: Wolfgang Denk @ 2003-10-20 20:32 UTC (permalink / raw)
To: u-boot
In message <102020031443.17137.46b4@att.net> you wrote:
> I am working on an MPC8270 based custom board. u-boot is ported from EP8260
> board version. RAM is 128M, flash is 16M.
> After u-boot relocates code in the ram, sometimes, stack pointer gets
> corrupted. And sometimes, I get bus fault which overwirtes all u-boot area in
> the RAM with some pattern like this
Why do you post the same message _AGAIN_ just 3 hours after the
first, identical message, to which I replied semi-immediately?
If you need IMMEDIATE help you can try and apply for commercial
support, for which you will have to pay $$$$. If you kindly ask for
free help, please try and be a _bit_ more patient!
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de
C++ is the best example of second-system effect since OS/360.
^ permalink raw reply [flat|nested] 2+ messages in thread
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