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# EL2 SweRV RISC-V Core<sup>TM</sup> 1.4 from Western Digital
* Upgraded bit-manipulation support for Zba, Zbb, Zbc, Zbe, Zbf, Zbp, Zbr, Zbs to `0.94` draft spec.
* Zba, Zbb, Zbc and Zbs are enabled by default. Use `-set=bitmanip_zb*=1` to enable other sub-extensions.
* Simulation performance improvement coding style changes in branch predictor and PIC
* Several corner case and exotic bug fixes :
* MPC run ack timing
* Force halt mechanism and MPC
* Store data collision with DCCM DMA error when address is 0x0
* RAW hazard on mtdata1
* Errors on DMA access could leak into Dbg abstract cmd ocurring at same time
* Icache parity error and branch error collision leading to fwd progress issue
* Fixed linter warning for async reset
2020-11-18 02:25:18 +08:00
# EL2 SweRV RISC-V Core<sup>TM</sup> 1.3 from Western Digital
* Multiple debug module compliance deviations and bugs reported by Codasip
* Updates to debug module to level compliance to version 0.13.2 of debug spec
* Trigger chaining compliance fixes
* Power optimization improvements and clock gating improvements
* Significantly lower power in sleep as well as normal operation.
* Enhanced debug memory abstract command to access internal as well as external memories
* Added bit-manipulation support for Zba, Zbb, Zbc, Zbe, Zbf, Zbp, Zbr, Zbs (Jan 29, 2020 Draft spec).
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* Zbs and Zbb are enabled by default. Use `-set=bitmanip_zb*=1` to enable other sub-extensions.
2020-11-18 02:25:18 +08:00
* Enhancements and additional configurations options for a faster divider
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* JTAG bypass register intial state issue fixed
* New branch predictor fully-associative option with 8,16,32 entries.
2020-11-18 02:25:18 +08:00
* Corner case bugs fixes related to
* Bus protocol corner cases (ahb)
* Fetch bus error recording improved accuracy
* Branch predictor pathological timing cases fixes
* Fast interrupt with DCCM ECC errors priority bug
* MPC & PMU protocol cleanup
* Performance counter bug fixes (counting branch prediction events)
* Triggers and ECC correctable error overflows bug fixes
* Demo test-bench updates
* Handling bigger test sizes using associative arrays in external memory slaves,
* simplified test building process and CCM loading functions (only program.hex is generated, no data.hex)
* Improved Makefile and example tests (see README)
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* Generating link.ld with swerv.config
2020-11-18 02:25:18 +08:00
2020-03-28 04:38:09 +08:00
# EL2 SweRV RISC-V Core<sup>TM</sup> 1.2 from Western Digital
## Release Notes
2020-03-31 05:00:19 +08:00
* Modified MSCAUSE encoding to be consistent with current internal specification
* Added internal timers
2020-03-28 04:38:09 +08:00
2020-03-06 05:47:00 +08:00
# EL2 SweRV RISC-V Core<sup>TM</sup> 1.1 from Western Digital
## Release Notes
* Several bug fixes in debug module
* Added new `dbg_rst_l` input for system wide reset to debug module. If debug module operation during core reset is not needed, this can be connected to `rst_l` .
* Trace port width adjusted
* Demo testbench has a synthesizable bridge to allow accessing the ICCM with load/stores via the DMA port. (*This only works with the AXI4 build*)
# EL2 SweRV RISC-V Core<sup>TM</sup> 1.0 from Western Digital
## Release Notes
Initial release
