eroom1966
f4e7e54abe
Code refactor and addition of rvvi interface
2023-01-17 12:47:38 +00:00
Ross Thompson
3cc37e3f12
Completely stripped down imperas simulation.
...
run with
vsim -c -do "do wally-pipelined-imperas.do rv64gc"
2023-01-12 12:48:38 -06:00
Ross Thompson
5ad0bacf5b
Created separate imperas testbench.
...
Resolved logger issue with the duplicated instructions after commit.
2023-01-12 12:07:07 -06:00
Ross Thompson
6cbce9672d
Possibly working speculative global history.
2023-01-08 23:46:53 -06:00
Ross Thompson
0eda4b1ab3
core part of global history works now. forwarding is still broken.
2023-01-08 23:35:02 -06:00
Ross Thompson
78e441fb38
More branch predictor cleanup.
2023-01-05 17:19:27 -06:00
Ross Thompson
9d03109f34
Officially added global history with speculation to types of branch predictors.
2023-01-05 14:04:09 -06:00
Ross Thompson
0eceeeeeaa
Simiplified global history branch predictor.
2023-01-04 23:41:55 -06:00
David Harris
fb0b2d4227
Moved floating-point tests earlier in Wally config
2022-12-25 22:31:20 -08:00
Ross Thompson
6e9d1eb180
Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main
2022-12-23 19:51:23 -06:00
Katherine Parry
4b50ffac91
reworked negitive sticky bit handeling in fma
2022-12-23 17:01:34 -06:00
Ross Thompson
a2de53aeeb
Reverted to naming IFUStallD to IFUStallF and LSUStallW to LSUStallM. These are generated in the F and M stage.
...
Generate WFIStallM in the privileged unit rather than generate in hazard.
Cleaned up the hazard cause logic to be consistent across all causes.
2022-12-23 15:10:37 -06:00
David Harris
9e21358d75
Removed unused signals from FPU
2022-12-23 00:18:39 -08:00
David Harris
56312cd0a6
Clean up unused FPU signals
2022-12-22 23:53:09 -08:00
Ross Thompson
2cc4d66ded
Renamed IFU and LSU stalls.
2022-12-22 21:56:33 -06:00
Ross Thompson
206bc7daa6
Closing in on icache flushed by FlushD rather than TrapM.
2022-12-22 20:19:09 -06:00
Ross Thompson
b1475df5e1
Wavefile updates.
2022-12-22 19:45:02 -06:00
Ross Thompson
a02b40cf02
Changes to wave file.
2022-12-21 08:41:47 -06:00
David Harris
dd0a02f0c8
Converted tvecmux to structural
2022-12-20 16:24:04 -08:00
David Harris
e7702e48b7
FPU remove unused signals
2022-12-20 14:43:30 -08:00
Ross Thompson
4f56e6ff5d
I think I finally fixed a long hidden bug in the replacement policy. The figures in the textbook are correct. There was small bug in the rtl.
2022-12-18 18:30:35 -06:00
Ross Thompson
ebdac1a9d0
Updated tests for fpga and BP.
2022-12-18 16:24:26 -06:00
Ross Thompson
73fd3fe040
Finally fixed the lru bug. It was actually a flush bug all along. At the end of flush writeback FlushAdr is incremented so clearly the dirty bit then clears the wrong set. Must either take an additional cycle to clear dirty and then change the address or clear the dirty bit before the cache bus acknowledgment. Changed it to clear at begining of that line's writeback before actually writting back.
2022-12-17 23:47:49 -06:00
Ross Thompson
cdeccd78e6
At long last found the subtle bug in the LRU.
...
Since the LRU memory is two ports, 1 read and 1 write, a write in cycle 1 to address x should not
forward data to a read from address y in cycle 2.
A read form address x in cycle 2 would still require forwarding.
2022-12-17 10:03:08 -06:00
Ross Thompson
731fbfc851
Oups found a bug with the new flush cache states.
2022-12-16 16:22:40 -06:00
Ross Thompson
b462554896
Cleanup of cache flush fsm enhancement.
2022-12-16 15:36:53 -06:00
Ross Thompson
e425ecac96
Fixed regression-wally to correct remove and mkdir wkdir.
2022-12-16 12:51:21 -06:00
David Harris
4365c99b52
Refactored stalls and flushes, including FDIV flush with FlushE
2022-12-15 10:56:18 -08:00
David Harris
5b040b7935
Regression delete wkdir files to prevent spurious failures
2022-12-15 10:24:58 -08:00
David Harris
f64c0589fe
FPU test list
2022-12-01 10:18:36 -08:00
Ross Thompson
f9ffcf377b
Reverted the IROM/DTIM address range modelsim assignment.
2022-11-30 17:13:33 -06:00
Ross Thompson
bfd238a4fc
Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main
2022-11-30 13:30:37 -06:00
Ross Thompson
8692ccbafb
Intermediate commit. Replaced flip flop dirty bit array with sram.
2022-11-30 00:08:31 -06:00
cturek
e28a6901a9
div tests in sim-wally
2022-11-30 02:32:04 +00:00
Ross Thompson
1e2180ef98
Updated HPTW to route access faults generated by the HPTW to the original access type either instruction access fault, load access fault or store access fault.
2022-11-29 17:19:31 -06:00
Ross Thompson
179d321683
Cleaned up the wavefile and added logic to linearly populate the LRU before all ways are filled.
2022-11-29 14:09:48 -06:00
Ross Thompson
ed54959378
Renamed signals in the cache.
2022-11-29 10:52:40 -06:00
Ross Thompson
4e52755c9f
Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main
2022-11-22 18:07:32 -06:00
cturek
3fbccbf119
Updated testbench/wave for fdivsqrt new start signals
2022-11-22 22:22:26 +00:00
Ross Thompson
84679c0062
Signal name changes for LRU.
2022-11-20 22:31:36 -06:00
Ross Thompson
1a00e7bbee
Changed names of cache signals.
2022-11-13 21:36:12 -06:00
Ross Thompson
5800dfde60
Updated wave file.
2022-11-13 21:34:45 -06:00
Ross Thompson
7311eca5ff
Wavefile update.
2022-11-10 15:48:06 -06:00
Ross Thompson
270a83352f
Found a way to remove the interlock fsm. Dramatically reducing the complexity of virtual memory and page table walks.
2022-10-23 13:46:50 -05:00
Ross Thompson
49a85c7f50
Sort of solved the bit width warning for dtim, irom ranges.
2022-10-19 10:42:19 -05:00
David Harris
6ab6467777
Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main
2022-10-14 17:33:36 -07:00
David Harris
1428081742
Removed unused FPU waves
2022-10-14 17:33:32 -07:00
Ross Thompson
47915421c2
Fixed uncached read bug introduced by yesterday's changes.
2022-10-13 11:11:36 -05:00
Ross Thompson
403daecc8e
Modified the do scripts to change the DTIM_RANGE and IROM_RANGE to large values from the defaults.
...
The defaults are used for synthesis.
rv64i and rv32i: DTIM 2KiB, IROM 2KiB
rv32ic: DTIM 4KiB, IROM 16KiB
Regression tests require 8MiB or larger so modelsim overrides.
2022-10-11 10:47:13 -05:00
David Harris
36c0e1d4e9
Removed imperas tests from rv32i/rv64i because the configs lack privileged support expected in the tests. Also cleaned up comment in LSU
2022-10-10 10:22:12 -07:00
