[ECOS] woes on making redboot RAM to be redboot ROM

[liang rainti]

hi,all,
   i have successfully made redboot RAM mcf5272 template,but i occured hard 
knocks on changing redboot RAM to redboot ROM .
   Redboot ROM hung up arch\hal_startup.c"hal_init_ram_sections" 
codes.would you give me some hits ? 
   My Redboot ROM procedure as following:
   power-on---- __exception_reset{
                                     move.w #2700, %sr
                                     
                                     .extern hal_hardware_init
                                     bra hal_hardware_init

                                     move.l  hsr_stack, %sp
                                     lea     hw_vsr_stack,%sp            
                                      lea     0,%fp                       
                                      link    %fp,#0                     
                                       .extern hal_reset                    
    
                                      jbsr    hal_reset 

                                  }
            ----hal_reset() 
                                 {
                              hung up ---   hal_init_ram_sections();
                                      #ifdef 
CYGSEM_HAL_VIRTUAL_VECTOR_SUPPORT
                                      hal_if_init();
                                      #endif
                                      ......
                                 }
hal_init_ram_section()
{
//   Initialize the RAM data section  from  the  ROM  image  of  the  data
    // section.

    memcpy(__rom_data_start, __ram_data_start, (size_t)__ram_data_size);

    //   Initialize the bss and sbss sections to zero.

    memset(__bss_start, 0, (size_t)__bss_size);
    memset(__sbss_start, 0, (size_t)__sbss_size);
}
 
attachment is  my linker script for ROM,and "m68k.ld" "vector.S"

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