uboot打印

 
#ifdef CONFIG_MTD_DEBUG
#define DEBUG(n, args...)    
 do {      
  if (n <= CONFIG_MTD_DEBUG_VERBOSE) 
   printf(args);  
 } while(0)
#else /* CONFIG_MTD_DEBUG */
#define DEBUG(n, args...) do { } while(0)
 
 char string[10] = "vvvvvvvvvvvvvvvvvvvvv ";
 DEBUG(1, "nand_scan_tailnand_scan_tailnand_scan_tailnand_scan_tailnand_scan_tail ");
 DEBUG(1, "%s ", string);
都可以
CONFIG_MTD_DEBUG_VERBOSE
CONFIG_MTD_DEBU