bbracker
2c77a13c08
fixed InstrValid signals and implemented less costly MEPC loading
2021-06-02 10:03:19 -04:00
bbracker
39ae743543
turns out I should not have tried renaming FStallD to FPUStallD because that name was already used! All the same it does feel weird to have two such signals floating around \(ah pun!\)
2021-05-28 23:11:37 -04:00
Katherine Parry
9464c9022d
floating point infinite loop removed from imperas tests
2021-05-18 10:42:51 -04:00
Thomas Fleming
eda5a267ee
Implement PMP checker and revise PMA checker
2021-05-03 17:37:42 -04:00
Thomas Fleming
cfe64e7c24
Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main
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Conflicts:
wally-pipelined/src/ebu/ahblite.sv
2021-05-03 14:02:19 -04:00
Katherine Parry
db95151d8d
fpu imperas tests run
2021-05-01 02:18:01 +00:00
Thomas Fleming
6e5fc107d9
Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main
2021-04-29 16:30:00 -04:00
ushakya22
9dfbfd5772
fix to pcm bug
2021-04-29 15:21:08 -04:00
Thomas Fleming
5f2bccd88f
Clean up PMA checker and begin PMP checker
2021-04-29 02:20:39 -04:00
Ross Thompson
8e5409af66
Icache integrated!
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Merge branch 'icache-almost-working' into main
2021-04-26 11:48:58 -05:00
bbracker
ba94fa3436
it says I need to merge in order to pull
2021-04-26 07:46:24 -04:00
bbracker
1cc0dcc83f
progress on bus and lrsc
2021-04-26 07:43:16 -04:00
Ross Thompson
6e803b724e
Merge branch 'tests' into icache-almost-working
2021-04-25 21:25:36 -05:00
Thomas Fleming
288a6d82ce
Fix HSIZE and HBURST signal widths in PMA checker
2021-04-23 20:11:43 -04:00
Thomas Fleming
38236e9172
Implement first pass at the PMA checker
2021-04-22 15:34:02 -04:00
Thomas Fleming
4bae666fa1
Implement virtual memory protection
2021-04-21 19:58:36 -04:00
Thomas Fleming
6188f10732
Move InstrPageFault to fetch stage
2021-04-13 13:39:22 -04:00
Ross Thompson
c91436d3b7
Merge branch 'icache_bp_bug' into tests
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Not sure this merge is right.
2021-04-06 21:46:40 -05:00
Thomas Fleming
fdb20ee1cf
Implement sfence.vma and fix tlb writing
2021-04-01 15:55:05 -04:00
Ross Thompson
9172e52286
Corrected a number of bugs in the branch predictor.
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Added performance counters to individually track
branches; jumps, jump register, jal, and jalr; return.
jump and jump register are special cases of jal and jalr.
Similarlly return is a special case of jalr.
Also added counters to track if the branch direction was wrong,
btb target wrong, or the ras target was wrong.
Finally added one more counter to track if the BP incorrectly predicts
a non-cfi instruction.
2021-03-31 11:54:02 -05:00
Ross Thompson
a64a37d702
Merge of main with the new icache and the branch predictor. I believe there is a bug in the icache with unaligned memory access. The second part of the access is incorrectly relying on the PCF being the address of the next two bytes of the instruction. However this is not always the case as the branch predictor can get the wrong target address. The icache needs to generate the +2 address internally.
2021-03-30 23:18:20 -05:00
Thomas Fleming
e3900bd0fa
Finish finite state machines for page table walker
2021-03-25 02:48:40 -04:00
bbracker
02e924e55a
instrfaults not respecting stalls bugfix
2021-03-25 00:16:26 -04:00
Ross Thompson
a99c0502e5
Fixed bugs with the csr interacting with StallW. StallW is required to pervent updating a csr. Now have a working branch predictor and performance counters to track the number of commited branches and mispredictions.
2021-03-24 15:56:55 -05:00
Shreya Sanghai
1d6a2989ed
PC counts branch instructions
2021-03-23 14:25:51 -04:00
Shreya Sanghai
bbe0957df5
Merge branch 'gshare' into main
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Conflicts:
wally-pipelined/regression/wave.do
2021-03-18 17:25:48 -04:00
Thomas Fleming
7f7597e667
Connect tlb, pagetablewalker, and memory
2021-03-18 14:35:46 -04:00
Shreya Sanghai
08e9149e20
made performance counters count branch misprediction
2021-03-16 11:24:17 -04:00
Thomas Fleming
7e11317a2d
Export SATP_REGW from csrs to MMU modules
2021-03-05 01:22:53 -05:00
David Harris
cf03afa880
Eliminated flushing pipeline on CSR reads
2021-02-26 17:00:07 -05:00
David Harris
37dba8fd26
More memory interface, ALU testgen
2021-02-15 10:10:50 -05:00
David Harris
d56d7a75a6
Rename ifu/dmem/ebu signals to match uarch diagram
2021-02-02 15:09:24 -05:00
David Harris
aad1d3d7dd
Moved writeback pipeline registers from datapth into DMEM and CSR
2021-02-02 13:02:31 -05:00
David Harris
9d7e242596
Moved fpu to temporary location to fix compile and cleaned up interface formatting
2021-02-01 23:44:41 -05:00
David Harris
396cea1ea7
Reorganized src hierarchically
2021-01-30 11:50:37 -05:00
