[U-Boot] Patch for RAMBOOT

Hi,

I am using AMCC PPC440Gx processor and using reference u-boot code of taishan board.

Is there any patch to convert the u-boot code instead of building the boot loader for FLASH boot to RAM BOOT.

Because I want to load u-boot directly to SDRAM location instead of loading FLASH.

Why because I want debug my u-boot code.