TFTP下载时出问题~~~求救

EmbedSky> tftp 0x30000000 u-boot_W35.bin;nand erase bios;nand write.jffs2 0x3000
0000 bios $(filesize)
dm9000 i/o: 0x20000300, id: 0x90000a46
MAC: 0a:1b:2c:3d:4e:5f
TFTP from server 192.168.1.1; our IP address is 192.168.1.6
Filename 'u-boot_W35.bin'.
Load address: 0x30000000
Loading: T T T T T T checksum bad
checksum bad
T checksum bad
checksum bad
checksum bad
T checksum bad
checksum bad
checksum bad
checksum bad
checksum bad
checksum bad
checksum bad
T T
Retry count exceeded; starting again
TFTP from server 192.168.1.1; our IP address is 192.168.1.6
Filename 'u-boot_W35.bin'.
Load address: 0x30000000
Loading: T T T T T T T T T T
Retry count exceeded; starting again
TFTP from server 192.168.1.1; our IP address is 192.168.1.6
Filename 'u-boot_W35.bin'.
Load address: 0x30000000
Loading: T T T T T
Abort
EmbedSky>

先看能ＰＩＮＧ通不，如果可以，再看ＴＦＴＰ的配置

1# 姚承明

macho正解。
你那是链接超时的反应。

2# machoe


EmbedSky> tftp 0x30000000 u-boot_W35.bin;nand erase bios;write.jffs2 0x30000000
bios $(filesize)
dm9000 i/o: 0x20000300, id: 0x90000a46
MAC: 0a:1b:2c:3d:4e:5f
TFTP from server 192.168.1.22; our IP address is 192.168.1.6
Filename 'u-boot_W35.bin'.
Load address: 0x30000000
Loading: checksum bad
checksum bad
checksum bad
T ################
done
Bytes transferred = 226476 (374ac hex)

NAND erase: device 0 offset 0x0, size 0x40000
Erasing at 0x3c000 -- 100% complete.
OK
Unknown command 'write.jffs2' - try 'help'
EmbedSky> tftp 0x30000000 u-boot_W35.bin;nand erase bios;nand write.jffs2 0x3000
0000 bios $(filesize)
Unknown command 'tftp' - try 'help'

NAND erase: device 0 offset 0x0, size 0x40000
Erasing at 0x3c000 -- 100% complete.
OK

NAND write: device 0 offset 0x0, size 0x374ac

Writing data at 0x37400 -- 100% complete.
226476 bytes written: OK
我怎么出现这样情况呢，checksum bad
但是确下载好了