使用mkyaffsimage生成镜像，使用uboot无法下载

使用命令mkyaffsimage_2 root_qtopia_2.6.30/  root_file.yaffs
生成的.yaffs格式，无法下载到板（4.3寸屏，256Mb）上去；

开发板光盘提供的文件系统镜像都是.bin格式的，想知道原因？请指教

你用这个命令试一下：mkyaffsimage_2 root_qtopia_2.6.30/  root_file.bin

还是不行，这是下载时的输出

Enter your selection: 6
USB host is connected. Waiting a download.

Now, Downloading [ADDRESS:30000000h,TOTAL:27963418]
RECEIVED FILE SIZE:27963418 (803KB/S, 34S)

NAND erase: device 0 offset 0x400000, size 0xfc00000
Erasing at 0xffe0000 -- 100% complete.
OK

NAND write: device 0 offset 0x400000, size 0x1aab010
Input block length is not page aligned
Data did not fit into device, due to bad blocks
27963408 bytes written: ERROR

可是下载天嵌光盘提供的文件系统镜像root_qtopia_2.2.0_2.6.30.4_256MB.bin，却可以下载

Enter your selection: 6
USB host is connected. Waiting a download.

Now, Downloading [ADDRESS:30000000h,TOTAL:63239626]
RECEIVED FILE SIZE:63239626 (791KB/S, 78S)

NAND erase: device 0 offset 0x400000, size 0xfc00000
Erasing at 0xffe0000 -- 100% complete.
OK

NAND write: device 0 offset 0x400000, size 0x3c4f5c0

Writing data at 0x3e9b000 -- 100% complete.
63239616 bytes written: OK

它说你的块地址没有页对页对齐。你把文件系统再加大点就行。
Input block length is not page aligned

其实很简单：在我们提供的linux移植手册里面关于文件系统制作章节和我们提供的开发板使用手册里面都讲了的：64MB的文件系统使用mkyaffsimage_2，128MB以上的使用mkyaffs2image，