rustsbi/CHANGELOG.md

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

0.2.0 - 2021-02-23

Added

• Support for RISC-V SBI v0.3 Specification
• S-level Illegal instruction exception is now delegated into S-level software handler
• Support RFENCE extension in RustSBI framework
• Added a test kernel to test SBI function on RustSBI implementations
• Support device tree binary in K210 platform
• Support SBI v0.3 hart suspend function
• Support PMU extension trait and init function
• Use fat pointer cell to support asynchronous hart state monitor module

Modified

• Reform RustSBI project into a library
• Function rustsbi::ecall now require a0-a5 input parameters
• Enhanced in-line code documents from SBI standard
• Now IPI module requires to return an SbiRet value
• Remove use of global_asm and llvm_asm in test kernel
• Align to 4 bytes for interrupt handler on QEMU and test kernel
• Update riscv crate dependency for QEMU platform
• Use mtval to read instruction on QEMU; still need to be kept on K210 as 1.9.1 does not define this register behavior
• Modify second parameter of enter_privileged to opaque other than dtb_pa
• Dump all trap frame registers when exception happened in reference implementations
• Use embedded-hal dependency version 0.2.6
• Change to asynchronous lock structure trait style
• Function num_counters returns usize and its SBI call must return SBI_SUCCESS
• Use ticket mutex for legacy stdio handler; remove dependency on lazy_static

Fixed

• Test kernel console now will lock before println line is finished
• Non-legacy supervisor IPI extension is fixed
• Returns -1 other than 0 when legacy console getchar function fails; thank you @duskmoon314

0.1.1 - 2021-02-01

Added

• Abstract support for HSM and SRST extensions
• Support SRST extension using test device on QEMU
• Count harts from device tree binary on QEMU platform
• Show hart id on panic for QEMU platform

Modified

• Use '#[naked]' instead of global assembly in newer Rust version for RustSBI platforms

Fixed

• Fix init_hsm function which is not exported before
• Small fixes on library documents

0.1.0 - 2020-12-26

RustSBI is adapted to SBI standard with implementation number 4.

Added

• Implementation specific SBI module 0x0A000004 defined
• K210 specific sbi_rustsbi_k210_sext SBI call

Modified

• Update private SBI function to K210 implementation

Fixed

• Delegate instruction load/store faults to S mode, allowing legacy console getchar to work on K210 (#7).
• Fixed 64-bit and 32-bit instruction value for target pointer widths
• Fixed readme document path for crates.io

0.0.2 - 2020-10-20

Added

• Support for Kendryte K210 with MMU and S-Mode
• Support for QEMU
• SBI v0.2 TIME extension and IPI extension
• RISC-V ISA both RV32 and RV64
• RISC-V Privileged Specification v1.11
• Backward compatible to privileged spec v1.9.1