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VexRiscv
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1,165 Commits 39 Branches 2 Tags 15 MiB
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1165 Commits

Author SHA1 Message Date
Charles Papon 9040326273 WIP two stage DCache, nearly passed the dhrystone benchmark 2017-04-23 18:31:16 +02:00
Charles Papon e00bf028cb Add HazardPessimisticPlugin for light and very good FMAX hazard tracking 2017-04-17 17:56:47 +02:00
Charles Papon 024e14ae58 Smaller and faster single stage instruction cache 
Add fast two stage instruction cache
Remove useless address == 0 checks in the HazardPlugin
 2017-04-13 18:27:03 +02:00
Charles Papon c83a157c64 IBusCachedPlugin with twoStage config is now compatible with syncronous regfile 2017-04-09 11:59:09 +02:00
Charles Papon 9a4c35d7b6 IBusCachedPlugin twoStage config fix 2017-04-08 18:34:44 +02:00
Charles Papon e3b9e671ec IBusCachedPlugin add two stage cache option for better FMax and better scaling 2017-04-08 17:42:13 +02:00
Charles Papon 5c594d6d2a IBusCachedPlugin move memory access outside the pipeline 2017-04-07 13:27:47 +02:00
Charles Papon 8f09867bda Cleaning 2017-04-07 13:09:31 +02:00
Charles Papon efb27390a7 Better IntAluPlugin 
Better SrcPlugin
Better DBusCachedPlugin
 2017-04-06 01:28:52 +02:00
Charles Papon 2e02a6f0e7 DBusCachedPlugin better write to read hazard logic (FMAX) 
Add some TODO FMAX comments
 2017-04-05 18:37:02 +02:00
Charles Papon 179e7f7b4c IBusCachedPlugin add asyncTagMemory option 2017-04-05 14:25:11 +02:00
Charles Papon 2b24cbc8e1 Add pessimistic harzard options 
Add separated add/sum option in srcPlugin
 2017-04-04 00:25:39 +02:00
Charles Papon acb85a1fb8 Add some decoder comments 2017-04-03 01:33:54 +02:00
Charles Papon 8ff05bd2a8 Much better decoder using Quine-Mc Cluskey 2017-04-02 21:05:25 +02:00
Charles Papon a9f7177181 Data cache pass dhrystone benchmark. 
Data cache todo -> bus error handling
 2017-04-01 17:06:59 +02:00
Charles Papon 2f384364d8 Data cache WIP 
refractoring
 2017-03-31 15:20:51 +02:00
Charles Papon 26597f78cd cleaning 2017-03-31 11:06:40 +02:00
Charles Papon 19fe998a52 Instruction cache is now able to catch bus errors 2017-03-30 17:34:24 +02:00
Charles Papon 95585b4d9a Add instruction cache plugin (tested) 2017-03-30 10:03:53 +02:00
Charles Papon 32d32845bd Add tests for iRsp, dRsp access faults 2017-03-28 20:25:58 +02:00
Charles Papon 2cb0e90077 refractoring/cleaning 2017-03-28 01:53:37 +02:00
Charles Papon 62a55c4cf4 Add IRsp/dRsp ready + error capabilities to stall the bus and to generate access error exceptions 2017-03-28 01:24:29 +02:00
Charles Papon eecc1e6b18 Add MachineCsr.mbadaddr logics 2017-03-27 18:35:27 +02:00
Charles Papon 349d600182 Better readme 
cleaning
 2017-03-27 00:33:34 +02:00
Charles Papon e5148e5e05 Better readme 2017-03-26 22:43:00 +02:00
Charles Papon 70e8bc503e Add readme 2017-03-26 22:38:07 +02:00
Charles Papon 91c52f4e46 Decoder now catch illegal instructions 2017-03-26 18:02:48 +02:00
Charles Papon c5520656e5 Now able to catch missaligned instruction/data addresses 
Modify arbitration with an flushAll + isFlushed
 2017-03-26 17:20:07 +02:00
Charles Papon 4000191966 FreeRTOS tested 
removeIt no more colapse bubbles
 2017-03-25 16:44:42 +01:00
Charles Papon 9bbf3ee3e7 MachineCsr fix csr set/clear with zero 
MachineCsr pass external/timer interrupts test
 2017-03-24 17:40:37 +01:00
Charles Papon 72d65841d2 MachineCsr pass simple interrupt and exception tests 2017-03-23 23:12:44 +01:00
Charles Papon ed0660237f MachineCsr wireing/logic done 2017-03-23 01:00:24 +01:00
Charles Papon de4c2470c8 MachineCsr add mcycle and minstret 2017-03-22 20:38:43 +01:00
Charles Papon 94770f8e0b Add MachineCsr (untested) 2017-03-22 18:29:34 +01:00
Charles Papon e9d3977737 Add Arbitration.flushIt 
Add ExceptionService
Add unremovableStage
Add MachineCsr (untested)
 2017-03-21 18:40:50 +01:00
Charles Papon c49373f3d1 Fix missing JAL, JALR encoding 2017-03-21 10:29:09 +01:00
Charles Papon 787682d4f6 Add comments 
Some refractoring
 2017-03-20 14:49:49 +01:00
Charles Papon 51058f851e Renaming 2017-03-20 12:37:53 +01:00
Charles Papon ecf853f491 Add Static/Dynamic branch prediction 2017-03-20 12:37:20 +01:00
Charles Papon d569242124 Add Static branch prediction in decode stage 2017-03-19 23:27:35 +01:00
Charles Papon 88dee6d2bc Reduce area with reg[0] optimisation 2017-03-18 19:32:54 +01:00
Charles Papon fc1bb7249a Add trace option to regresion 2017-03-18 14:06:42 +01:00
Charles Papon 5e9da0f27a Add self checked dhrystone test 2017-03-18 12:32:14 +01:00
Charles Papon 31db6511dc Fix performance of removed instruction which halt were halting the pipeline 2017-03-18 10:51:55 +01:00
Charles Papon 20ca348707 Fix dCmd sent while the execute stage is removed 
Pass dhrystone benchmark without error !
 2017-03-17 21:26:42 +01:00
Charles Papon 7517ac797d Add MUL/DIV/REM support with plugins (pass Riscv-Tests) 2017-03-17 11:45:01 +01:00
Charles Papon 52a524be06 Add light shifter plugin 2017-03-16 15:11:06 +01:00
Charles Papon 401be6ca83 Reorganize project 2017-03-16 13:14:25 +01:00
Charles Papon bf5bebda08 PcManager now drive PC asyncronously (use 1 cycle less in jump) 
Fix bypass logic when read/write r0
Disable REGFILE_WRITE_VALID in decod stage when r0 is written
 2017-03-15 21:10:44 +01:00
Charles Papon 83232e9860 Faster pipeline arbitration logic (200 Mhz on cyclone IV c6) 
Branch plugin with jump in execute or memory stages (parameter)
 2017-03-15 20:02:56 +01:00