[U-Boot] boot-up time optimization. Where to start?

Stefano Babic
2011-05-06T08:54:46Z

On 05/05/2011 09:06 AM, Alexander Stein wrote:

> Well, as already said this is related to CRC calculation of environment. I did
> a fast port to v2011.03 and the setenv is a lot faster, which is due the new
> env code base.
> But I also noticed the time until kernel_entry is called is about 30ms later
> after reset than on the old code base. But I didn't investigate any time
> further to see what caused this. But AFAICS also the new U-Boot code doesn't
> enable dcache on ARM1136 either.

This is wrong. The dcache is enabled on several MX31 boards. On the
mx35pdk, it is not enabled.

Add CONFIG_CMD_CACHE to your configuration file, and you will get the
dcache <on|off> command.

Best regards,
Stefano Babic

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