[ECOS] Samsung 44B0 porting

[ECOS] Samsung 44B0 porting

[AL Chane]

I am trying to port eCos to a Samsung 44B0 board(core is ARM7TDMI),
using E7T as the template to modify and build a GDB stub for 44B0 board.

Use objcopy.exe to convert gdb_module.img to gdb_module.bin
Use 44B0 board's monitor program to load gdb_module.bin to
the memory (for application use) and run. The monitor program
shows "undefined instruction exception!" I'm not sure what does
it mean. I suspect that the 44B0 can't recognize gdb_module.bin
at all. For E7T, an UUencoded conversion is needed. Any conversion
of image file is required? What might be wrong? 

thanks for the help!

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[ECOS] standalone application run on RAM or ROM

[peter_ku]

Hi,

If I build the application with ROM mode, and put it into flash.
After it execute, will it copy itself to RAM , and run from RAM?   or run from ROM directly?   should I enable some option in the ecos-configuration tool?

How about Red boot? Do redboot copy itself to RAM?

Thanks a lot.

Peter

Re: [ECOS] standalone application run on RAM or ROM

[Andrew Lunn]

On Tue, Nov 12, 2002 at 04:37:31PM +0800, peter_ku wrote:
> Hi,
> 
> If I build the application with ROM mode, and put it into flash.
> After it execute, will it copy itself to RAM , and run from RAM?   or run from ROM directly?   should I enable some option in the ecos-configuration tool?
> 
> How about Red boot? Do redboot copy itself to RAM?
> 
> Thanks a lot.

RAM applications run in RAM
ROM application run in ROM
ROMRAM application live in ROM, but copy themselves into RAM before running.

Redboot is just a normal application. It does nothing special.

Not all HALs support ROMRAM.

    Andrew

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