[U-Boot] u-boot with no external RAM, is it possible

Is it possible to run u-boot with no external RAM chip? I have a board using an STM32F437 that does not have memory beyond the flash and ram present on the chip. I'm starting with the STM32f429-Discovery build and trying to strip out FMC and DRAM init sections of code, but not having much luck getting u-boot to run afterwords.

Thanks in advance, Mike