下载新编译的内核出现：No filesystem could mount root, tried: ext3 ext2 cramfs vfat msdos iso9660 romfs ernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(31,3)
Backtrace:
[] (dump_backtrace+0x0/0x10c) from [] (dump_stack+0x18/0x1c)
r6:c38a9000 r5:ffffffea r4:c381df2c
Backtrace:
[
r6:c38a9000 r5:ffffffea r4:c381df2c
原因是：（1）内核的NAND 没有分区 （2）没有对YAFFS的支持