[U-Boot] Trouble booting up my AT91RM9200DK

[V-ris Jaijongrak]

Dear sir,
   My new kernel refuses to boot up complaining about invalid machine id.
(providing that my old kernel (2.6.16) works fine, while new ones (2.6.27 or
2.6.28) refuse to boot up.
  I have tried looking up and bdinfo shows the correct information (
0x00000106) but it reads r1 as (r1 = 0x21edd930). Right now I am using
u-boot-2008.10.

Any help on this would be very appreciate, since I cannot find any useful
information for this.

Best Regards,