如果你想把鏡像文件寫入flash，每次開機後讓u-boot幫你複製到sdram中，再使用bootm命令引導的話，可以按照這樣操作：
sbc2410=>tftp 0x30008000 zImage.img
TFTP from server 192.168.1.115; our IP address is 192.168.1.128
Filename 'zImage.img'.
Load address: 0x30008000
Loading: #################################################################
#################################################################
#################################################################
####################################################
done
Bytes transferred = 1263324 (1346dc hex)
sbc2410=>nand erase 0x30000 0x1d0000
NAND erase: device 0 offset 196608, size 1900544 ... OK
sbc2410=>nand write 0x30008000 0x30000 0x1d0000
NAND write: device 0 offset 196608, size 1900544 ... 1900544 bytes written: OK
設置u-boot啓動命令：
1、針對方法一：
sbc2410=>setenv bootcmd nand read 0x31000000 0x30000 0x1d0000/;bootm 0x31000000
sbc2410=>saveenv
Saving Environment to NAND...
Erasing Nand...Writing to Nand... done
2、針對方法二：
sbc2410=>setenv bootcmd nand read 0x30008000 0x30000 0x1d0000/;bootm 0x30008000
sbc2410=>saveenv
Saving Environment to NAND...
Erasing Nand...Writing to Nand... done
sbc2410=>reset
啓動信息略。。。。