[U-Boot] How to set up SDRAM

Hi, I have a ARM + FPGA System on Chip board with 1 GB of DDR3 SDRAM connected to ARM. I am doing a Project where I have to read and write to this SDRAM. I am searching over the Internet and I came to know that I have to do something with uboot to read or write to this Memory. It has been almost two weeks and I am stuck at it. Can you please just guide me how can I read or write data to this Memory?

Sent from Mail for Windows 10