[ECOS] help ! building redboot for edb7211(ep7211)

[xiaocy]

hi,
 I try to add redboot to my ep7211 board.
 I follow the instrution from ecos as below:
 1.building arm-elf-gcc etc.gnu tools chain
 2.building ecosconfig 
 3 building redboot 
   . get ecos sources from cvs server
   . mkdir ecos/tmp
   . cd tmp
   . export PATH <add path of gnutools and ECOS_REPOSITORY>
   . ecosconfig new edb7211 redboot 
   . ecosconfig import ${ECOS_REPOSITORY}/hal/arm/current/misc/edb7211_redhat_ROM.ecm
   . ecosconfig tree
   . make 
   . get binary in  tmp/install redboot.bin redboot.img redboot.srec redboot.elf 
   . have a question which file user to download to board ?
   . try redboot.srec 
      ./dl_ebd7xxx redboot.srec 38400 /dev/ttyS0  prompt success!
      . boot board ,I can see nothing in lcd screen. And I tried minicom in my linux box ,
        also nothing 
   . try other file ,I can see nothing in screen too.

  what happen ! thank you 
  Best Regards

            xiaocy
            xiaocy88@263.net