OpenSBI Version 0.8

This release has:

• Simple FDT timer driver framework
• Simple FDT ipi driver framework
• Simple FDT irqchip driver framework
• Simple FDT serial framework
• Generic FDT based platform support
• Nuclei UX600 platform support
• Detect HART CSRs at boot time
• Multi-PLIC support
• Multi-CLINT support
• Allow multiple builtin DTBs
• Hypervisor v0.6.1 specification support
• Shakti C-class platform support

OpenSBI Version 0.7

This release has:

• Lots of code cleanups
• Lots of performance improvements
• SBI v0.2 HSM extension
• Simple bitops library
• Simple bitmap library
• Simple hartmask library
• Sparse and discontinuous HART id support
• Memory reservation in DTB passed to next booting stage
• OpenPiton platform support

OpenSBI Version 0.6

This release has:

• Relocation lottery in reference firmwares
• Preferred boot HART field in fw_dynamic_info
• Platform specific optional way to specify MISA
• Hypervisor v0.5 specification support
• SBI v0.2 TIME extension
• SBI v0.2 IPI extension
• SBI v0.2 RFENCE extension
• T-HEAD C910 platform support
• HART exit path support
• Dynamic creation of IPI events
• Dynamic registration of SBI extensions
• Removed qemu/sifive_u platform support
• Spike platform support
• Print MIDELEG and MEDELEG in boot prints

OpenSBI Version 0.5

This release has:

• Lot of critical fixes
• Hypervisor extension support
• SBI v0.2 base extension support
• Debug prints support
• Handle traps when doing unpriv load/store
• Allow compiling without FP support
• Use git describe to generate boot-time banner
• Andes AE350 platform support

OpenSBI Version 0.4

This release has:

• Lot of bug fixes
• Optimized SBI remote fence implementation
• FW_DYNAMIC reference firmware
• Out-of-tree platform support
• Simple allocator to manage extra per-HART scratch space
• More external firmware friendly code organization
• Relocation support in reference firmwares
• Ariane FPGA platform support

OpenSBI Version 0.3

This release include crucial build fix over 0.2 release for 32bit systems.

OpenSBI Version 0.2

This release primarily brings RISC-V 32bit support and bug fixes over previous release.

OpenSBI Version 0.1

This is the first release of OpenSBI implementing version 0.1 of the RISC-V SBI specifications. Support is limited to 64bit RISC-V systems with this release. 32bit support will be available in follow up releases.