Cva6 Versions Save

What's Changed

• Fix cv64a6 configurations

This is the first release of a new series.

What's Changed

Too many changes since previous release to be reported here.

Full Changelog: https://github.com/openhwgroup/cva6/compare/v4.2.0...v5.0.0

Added

• Check execute PMA on instruction frontend
• Add support for non-contiguous cacheable regions to the PMA checks
• Provision exponential backoff for AMO SC in L1 D$ miss handler

Changed

• Several small fixes to get the code running on VCS
• Fix compressed instruction decoding in tracer
• Fix privilege bug in performance counters. The counters have always been accessible in user mode.
• Fix RISC-V PK simulation bug caused due to insufficient time to init the a0 and a1 registers via the bootrom
• Fix bug in wt_axi_adapter (only appeared when dcache lines were wider than icache lines)
• Fix potentially long timing path in axi_lite_interface
• Fix VCS elab warning in load_store_unit
• Replace PLIC with implementation from lowRISC
• Re-work interrupt and debug subsystem to associate requests during decode. This improves stability on for non-idempotent loads.
• Bump fpnew to v0.5.5
• Bump axi to v0.7.0
• Bump common_cells to v1.13.1
• Bump riscv-dbg to v0.1
• Improve FPU pipelining and timing around scoreboard
• Reworked the axilite to PLIC shim for OpenPiton+Ariane
• Remove in and out aliases for AXI interfaces
• Fix small issues with DC synthesis
• Fix wrong dirtying of sd flag in mstatus
• Synthesis fix for Vivado 2018.3
• Clean-up instruction front-end, small IPC improvement
• Move to Verilator 4.014

Added

• Official support for floating point unit
• Added AXI-64bit adapter for write-through cache system
• Added AXI atomic ops and exclusive access support to write-through cache system
• Provision riscv-isa-sim tandem simulation
• Support for preloading

Changed

• Rerouted the JTAG from PMOD to the second channel of FTDI 2232 chip on Genesys 2 board
• Increase available RAM size on Genesys II board to 1 GiB
• Fixed problem which decoded compressed hints as illegal instructions
• Bugfixes in write-through cache system
• ID width fix in random delayer

4.0.0

Added

• Preliminary support for A-Extension
• Preliminary FP support
• Preliminary support for OpenPiton cache system
• Commit log feature
• Provisioned aw_top signal for close to memory atomics
• FPGA Support
• Misc bug-fixes
• Platform Level Interrupt Controller (PLIC)
• FPGA Bootrom with capability to boot from SD Card

Changed

• core_id / cluster_id inputs have been merged to hard_id input (interface changes)
• The three AXI ports have been merged into one (interface changes)
• [Bugfix] Wrong flagging of memory in machine mode if high bits (63-38) are not equal #136