The binary of OpenSBI is packaged with the binary compiled by U-Boot in the way of
payload to generate the final fw_payload.bin. The main functions of
OpenSBI are:
Provide basic system calls for Linux
Switch the mode from M mode to S mode
Jump to 0x4020_0000 (located in DDR) to execute U-Boot
The normal output information is illustrated in the following figure.Figure 1. OpenSBI Output Example