#define INITRD_MINOR 250 /* shouldn't collide with /dev/ram* too soon ... */
  
  /* 1 = load ramdisk, 0 = don't load */
  extern int rd_doload;
  
  /* 1 = prompt for ramdisk, 0 = don't prompt */
  extern int rd_prompt;
  
  /* starting block # of image */
  extern int rd_image_start;
  
  /* 1 if it is not an error if initrd_start < memory_start */
  extern int initrd_below_start_ok;
  
  /* free_initrd_mem always gets called with the next two as arguments.. */
  extern unsigned long initrd_start, initrd_end;
  extern void free_initrd_mem(unsigned long, unsigned long);
  
  extern unsigned int real_root_dev;