[uClinux-dev] kernel load issue, jump to _fault vector

Brian S. Julin bri at abrij.org
Sat May 8 11:13:44 EDT 2010


On Sat, 8 May 2010, angelo wrote:

> Hi all,
>
> well i have some news with this coldfire 5307 issue,
>
> i disassembled and put some loop as opcodes here and there in the kernel 
> (4ef9 0000 XXXX  jmp XXXX ) as a very rude debug.
>
> The issue is just at the beginning:
>
> Dump of assembler code for function _text:
> 0x00000400 <_text+0>:    nop
> 0x00000402 <_text+2>:    movew #9984,%sr
> 0x00000406 <_text+6>:    moveal #0,%sp              <--- Issue is here
> 0x0000040c <_text+12>:    movec %sp,%vbr
> 0x00000410 <_text+16>:    movel %sp,0xe8944 <_ramvec>

See arch/m68knommu/platform/coldfire/head.S

CONFIG_VECTORBASE is the #0

There are a few config options, you'll see them as macros in coldfire/head.S
and can trace their names to the Kconfig or vendor/ configs.

Also you can customize own head.S if PLATFORM_SETUP is not enough for
you.

--
Brian



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