我的u-boot打印：
U-Boot 1.1.6 (Oct 18 2011 - 15:36:18) for FriendlyARM MINI6410
CPU: S3C6410@532MHz
Fclk = 532MHz, Hclk = 133MHz, Pclk = 66MHz, Serial = CLKUART (SYNC Mode)
Board: MINI6410
DRAM: 256 MB
Flash: 0 kB
NAND: No NAND device found!!!
0 MB
MMC: 1922 MB
In: serial
Out: serial
Err: serial
MAC: 08:90:90:90:90:90
##### FriendlyARM U-Boot(2011-10, SD) for 6410 #####
[f] Format the nand flash
[v] Download u-boot.bin
[k] Download Linux/Android kernel
[y] Download root yaffs2 image
Download root ubifs image
[a] Download Absolute User Application
[n] Download Nboot.nb0 for WinCE
[w] Download WinCE NK.nb0
[s] Set the boot parameter of Linux
Boot Linux
[q] Quit to shell
NAND(MLC2): 0 MiB, RAM: 256 MiB
LCD type, firmware version: 3 1127
superboot打印是：
Superboot6410
Ver: 120725
CPU: S3C6410 533MHz
RAM: 256MB
NAND: 2GB(MLC2) ID:ECD58472
Touch Device: 1-wire
LCD Type: S70(Auto)
##### FriendlyARM Superboot for 6410 #####
[f] Format the nand flash
[p] Download superboot
[v] Download uboot.bin
[k] Download Linux/Android kernel
[y] Download root yaffs2 image
Download root ubifs image
[a] Download Absolute User Application
[n] Download Nboot.nb0 for WinCE
[l] Download WinCE bootlogo
[w] Download WinCE NK.bin
Boot the system
[s] Set the boot parameter of Linux
[d] Download and Run an Absolute User Application
Version: 120725, RAM 2048 MiB, NAND(MLC2) 2GiB
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请问是什么原因啊？
