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RISC-V Open Source Supervisor Binary Interface (OpenSBI)
========================================================
The RISC-V Supervisor Binary Interface (SBI) is a recommended
interface between:
1. platform specific firmware running in M-mode and bootloader
running in S-mode
2. platform specific firmware running in M-mode and general
purpose operating system running in S-mode
3. hypervisor runnng in HS-mode and general purpose operating
system running in VS-mode.
The RISC-V SBI spec is maintained as independent project by
RISC-V Foundation at https://github.com/riscv/riscv-sbi-doc
The RISC-V OpenSBI project aims to provides an open-source and
extensible implementation of the SBI spec. This project can be
easily extended by RISC-V platform or RISC-V System-on-Chip vendors.
How to Build?
-------------
Below are the steps to cross-compile and install RISC-V OpenSBI:
1. Setup build environment
$ CROSS_COMPILE=riscv64-unknown-linux-gnu-
2. Build sources
$ make PLAT=<platform_name>
OR
$ make PLAT=<platform_name> O=<build_directory>
3. Install blobs
$ make PLAT=<platform_name> install
OR
$ make PLAT=<platform_name> I=<install_directory> install
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