[U-Boot-Users] about "env_init"

[孙 彬]

hello,all
      In the file Env_flash.c ,there is a function as
   
  #ifdef CFG_ENV_ADDR_REDUND
  int  env_init(void)
{
 DECLARE_GLOBAL_DATA_PTR;
  ...
  }
   
   
  What's  CFG_ENV_ADDR_REDUND  mean?on which condition the function env_init(void) works.
  and I want to know when env store in flash,where to store,and how to store the env and how can i get it from flash
   
  thanks a lots

       
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