uboot命令问题

quanguoheme

如下所示 ,医用命令烧录内核就提示如下信息, 但是 烧录使用uboot烧录一个小程序到0位置没有问题,奇怪啊
[u-boot@MINI2440]# nand wirte 30008000 80000 260000
nand - NAND sub-system

Usage:
nand info - show available NAND devices
nand device [dev] - show or set current device
nand read - addr off|partition size
nand write - addr off|partition size
    read/write 'size' bytes starting at offset 'off'
    to/from memory address 'addr', skipping bad blocks.
nand erase [clean] [off size] - erase 'size' bytes from
    offset 'off' (entire device if not specified)
nand read[.yaffs[1]] is not provide temporarily!
nand write[.yaffs[1]]    addr off size - write the `size' byte yaffs image start
ing
     at offset `off' from memory address `addr' (.yaffs1 for 512+16 NAND)
nand bad - show bad blocks
nand dump[.oob] off - dump page
nand scrub - really clean NAND erasing bad blocks (UNSAFE)
nand markbad off [...] - mark bad block(s) at offset (UNSAFE)
nand biterr off - make a bit error at offset (UNSAFE)
[u-boot@MINI2440]#