本文件将介绍Flash Management System的FLASH存储空间划分，ECC数据纠错，坏块处 理，均匀(寿命)存储算法，逻辑地址/物理地址映射算法实现的方案，

UFFS v1.3.3 is released. - Simplify flash interface. - Improved bad block handling. - Better support for MLC NAND flash. - Added hardware ECC and RS-ECC controller emulator. - Bug fixes. The biggest change of this rele

Separate phases of nand_scan(), allowing board driver to intervene and override command or ECC setup according to flash type.