[U-Boot-Users] Problems writing to memory with mw

[robert lazarski]

Hi all,

I'm trying to track down problems loading a linux kernel on my custom
8548 board off of 1.3RC3 - it loads sometimes via a ramdisk and gives
me a bash shell - but most times it crashes in unusual, different
places.

I ram mtest in the monitor and it crashes at 00000a90 . When using mw I get:

=> mw 00000a90 cafecafe
NIP: CAFECAFC XER: 00000000 LR: 1FFC109C REGS: 1ff9dc40 TRAP: 0700 DAR: 00000000
MSR: 00001000 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 00

GPR00: 1FFD9C44 1FF9DD30 00000200 1FF9DD40 00000338 00000018 1FFEA258 1FFEA308
GPR08: 1FFEA2F0 1FF9E00C 00000C01 1FFA03F0 1FFEA250 00000000 1FFEFB00 20040000
GPR16: 00000000 00000000 00000000 00000000 00001000 1FF9DD30 00000000 1FFC109C
GPR24: CAFECAFE 1FFEA244 00000339 1FFE71B8 00000049 1FF9DF80 1FFF0860 00000338
** Illegal Instruction **
Call backtrace:
00000000 1FFD6C80 1FFD74CC 1FFDB6A8 1FFDC0A4 1FFDC6D0 1FFD0AE0
1FFC8294 1FFC161C

I can write to  00000a90 via the bdi . u-boot otherwise runs
perfectly. Any ideas?
Robert