Relocation problem on the Nintendo DS (ARM9)

Hi,
This is my first message here, and probably not the last :)
Thanks for your beautiful website and the clean documentation, this is 
why I choosed prex.

I am trying to port prex on the Nintendo DS.
My first problem is that relocation fails at boot time.

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if I set DRIVER_BASE at AUTODETECT, I get the following :
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Prex Boot Loader V1.00
loading: hdr=02002008 module=020030e4 name=prex

elf_load
kernel base=02100000
phys addr=02100000
p_flags=00000005
p_align=00008000
p_paddr=02100000
load: offset=02100000 size=00005a48
p_flags=00000006
p_align=00008000
p_paddr=02105a48
load: offset=02105a48 size=00000008
module size=00007400 entry=02100074
loading: hdr=02007c08 module=02003114 name=dev.ko

elf_load