1:NAND COMMAND
修改include/configs/smdk2410.h
#define CONFIG_CMD_NAND
#ifdef CONFIG_CMD_NAND
#define CONFIG_SYS_MAX_NAND_DEVICE 1
#define CONFIG_SYS_NAND_BASE 0x4E000000
#endif
2：USB&FAT 支持
#define CONFIG_CMD_USB
#define CONFIG_CMD_FAT
#define CONFIG_USB_OHCI
#define CONFIG_USB_STORAGE
#define CONFIG_USB_KEYBOARD
#define CONFIG_DOS_PARTITION
#define CFG_DEVICE_DEREGISTER
#define CONFIG_SUPPORT_VFAT
#define LITTLEENDIAN
几个重要的文件
cpu/arm920t/start.S
board/samsung/smdk2410/lowlevel_init.S
board/samsung/smdk2410/u-boot.lds
lib_arm/board.c