How to build u-boot for cycloneII board?

Honored Contributor

20 years ago

Hi posix6973,

> The NET seems can ping out only

Correct. u-boot does not respond to pings.

> when issue ping command the dm9000 LINKACT# pin light up and light off after executed command

Correct. Each time a network operation is performed, the MAC/PHY is initialized, the operation is performed,

then the device is shut down.

> then the Ethernet is broken so I can not ping it form outside.

The Ethernet is not broken at all, u-boot does not respond to a ping. Remember, u-boot is a boot loader

and monitor. It has many features that serve two main purposes: (1) hardware initialization/testing and

(2) loading and executing a kernel. To perform basic testing on your ethernet device you can use ping,

bootp, dhcp, tftpboot, nfs etc. from the u-boot command line. And all of the network commands

support booting a kernel via the network -- anything beyond testing/loading is outside the scope of

u-boot -- which is why u-boot supports "standalone" applications.

> Would you please help me to patch the dm9000x.c file?

Sure. But first review the main README on how to submit patches and the following:

Then I'll be glad to help if you have any problems.

Best Regards,

--Scott

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