Re: [U-Boot] arm: Activating dcache breaks 'usb start' and 'tftpboot' on jadecpu

Dear =?ISO-8859-15?Q?Matthias_Wei=DFer?=,

In message 4CF8FE3E.9010105@arcor.de you wrote:

I just activated the dcache on our jadecpu board but it seems to me that this breaks some commands.

I am not surprised.

Has anyone an explanation for this behavior? Is anyone out there having dcache running on an ARM926 and working usb/tftpboot?

Many drivers have not been written to work with enabled caches.

As far as USB is concerned, you might be lucky that your system usies a EHCI controller, so setting CONFIG_EHCI_DCACHE should help.

As for the network driver, you will probably have to figure out yourself how to fix that.

Patches welcome.

Best regards,

Wolfgang Denk