EEPW论坛

我拿到开发板的时候，下载内核运行都正常，一次误操作破坏了U-BOOT，我按照手册重新烧写了U-BOOT，可以再下载内核就出现校验错误，请问是什么原因，是U-BOOT有问题吗？

boot 1.0 (Oct 16 2004 - 22:21:32)
Uncompressing image...
U-Boot 1.1.1 (Nov 16 2004 - 18:01:43)
U-Boot code: 21F00000 -> 21F16F2C BSS: -> 21F1B368
RAM Configuration:
Bank #0: 20000000 32 MB
Flash: 16 MB
In: serial
Out: serial
Err: serial
Hit any key to stop autoboot: 0
## Booting image at 21000000 ...
Image Name:
Image Type: ARM Linux Kernel Image (gzip compressed)
Data Size: 655730 Bytes = 640.4 kB
Load Address: 20008000
Entry Point: 20008000
Verifying Checksum ... Bad Data CRC
Uboot>

我直接下载内核后，不掉电重启，直接BOOTM 21000000 校验又是正确的，搞不明白是什么回事了，请帮帮忙！

Load address: 0x21000000
Loading: #################################################################
#################################################################
############
done
Bytes transferred = 724876 (b0f8c hex)
Uboot> bootm 21000000
## Booting image at 21000000 ...
Image Name:
Image Type: ARM Linux Kernel Image (gzip compressed)
Data Size: 724812 Bytes = 707.8 kB
Load Address: 20008000
Entry Point: 20008000
Verifying Checksum ... OK
Uncompressing Kernel Image ...