7.1.2. Yocto Recipe: recipes-bsp/u-boot/u-boot-socfpga_%.bbapend
This Yocto recipe appends to the meta-intel-fpga/recipes-bsp recipe and enables the FPGA to SDRAM bridge, if it is required for the device target. This bridge is not required for Intel® Arria® 10 designs.
On devices that require the bridge, the bridge allows mSGDMA to access the HPS SDRAM. This access exposes the full HPS SDRAM to the FPGA device.