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>
0x00000416 <_text+22>: moveal #0,%sp
0x0000041c <_text+28>: movel %sp,0xe8940 <_sdata>
0x00000422 <_text+34>: movel #16777216,%d0
0x00000428 <_text+40>: addl %sp,%d0
0x0000042a <_text+42>: movel %d0,0xe894c <_ramend>
0x00000430 <_text+48>: movel #16777216,%d0
0x00000436 <_text+54>: movec %d0,%cacr
0x0000043a <_text+58>: nop
0x0000043c <_text+60>: movel #49184,%d0
0x00000442 <_text+66>: movec %d0,%itt0
0x00000446 <_text+70>: moveq #0,%d0
0x00000448 <_text+72>: movec %d0,%itt1
0x0000044c <_text+76>: movel #-1610612224,%d0
0x00000452 <_text+82>: movec %d0,%cacr
0x00000456 <_text+86>: nop
0x00000458 <_text+88>: lea 0x11c250,%a1
0x0000045e <_text+94>: movel %a1,0xe8948 <_ramstart>
0x00000464 <_text+100>: lea 0xff000 <system_state>,%a0
0x0000046a <_text+106>: lea 0x11c250,%a1
0x00000470 <_text+112>: clrl %d0
Seems that after setting stack frame to 0 the code jump to the interrupt
vector _fault routine.
Probably i should set to the stack frame a more appropriate value for my
custom board, near the top of the SDRAM, or in the internal SRAM
probably should be better, but i am not finding if there is some custom
.c or makefile for this.
Every help is appreciated,
thanks in advance
angelo
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