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OpenSBI is a RISC-V bootloader and set of firmware libraries that implement the RISC-V Supervisor Binary Interface (SBI) required for supervisor targets, such as the FreeBSD kernel. This port installs the OpenSBI libraries that can be used for development of custom firmwares, as well as the firmware files for the QEMU virt and SiFive U540 platforms. Reviewed by: lwhsu, philip (earlier version) Approved by: lwhsu Differential Revision: https://reviews.freebsd.org/D22164
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839 B
Plaintext
19 lines
839 B
Plaintext
The RISC-V Supervisor Binary Interface (SBI) is the recommended interface
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between:
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1. A platform-specific firmware running in M-mode and a bootloader, a
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hypervisor or a general-purpose OS executing in S-mode or HS-mode.
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2. A hypervisor running in HS-mode and a bootloader or a general-purpose OS
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executing in VS-mode.
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The RISC-V SBI specification is maintained as an independent project by the
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RISC-V Foundation at https://github.com/riscv/riscv-sbi-doc.
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The goal of the OpenSBI project is to provide an open-source reference
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implementation of the RISC-V SBI specifications for platform-specific firmwares
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executing in M-mode (case 1 mentioned above). An OpenSBI implementation can be
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easily extended by RISC-V platform and system-on-chip vendors to fit a
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particular hardware configuration.
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WWW: https://github.com/riscv/opensbi
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