这个是NAND flash的底层驱动，nand是三星的 K91G08的驱动，是基于LPC2478平台的，稍加修改就可以应用其他平台。-This is the underlying NAND flash drive, nand the K91G08 Samsung drive, is based on the LPC2478 platform, with slight modifications can be applied to other platforms.