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From: mss59 at att.net <mss59@att.net>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] MPC8270 Custom Board: Stack Pointer Corruption
Date: Mon, 20 Oct 2003 14:43:51 +0000	[thread overview]
Message-ID: <102020031443.17137.46b4@att.net> (raw)

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.

             reply	other threads:[~2003-10-20 14:43 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-10-20 14:43 mss59 at att.net [this message]
2003-10-20 20:32 ` [U-Boot-Users] MPC8270 Custom Board: Stack Pointer Corruption Wolfgang Denk

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