[U-Boot] U-Boot and ELDK

Hello.

I apologize if my question sounds silly :)

There are numerous toolchains and kits out there -- head's spinning. ELDK is one of them. In my understanding ELDK focuses on PowerPC architecture, but toolchains for ARM/MIPS architectures are also available. How reasonable is it to take it and use it for, let's say, ARM9 based platform ?

How necessary is it to install ELDK in order to be able to compile U-Boot for non-PPC platform?

Thanks.