Alexandre Joannou
5bf15adf04
Addressed @francislaus comments
2022-08-17 08:41:27 +00:00
Jonathan Woodruff
1fceb8fa72
Use standard imports as the fixes have been upstreamed.
2022-08-15 16:18:23 +00:00
gameboo
6b51139c9a
Update ack
2022-08-15 16:18:23 +00:00
Alexandre Joannou
947cf8ed7b
NonPipelined API update
2022-08-15 16:18:23 +00:00
Alexandre Joannou
f292c5196d
Rename master_xactor to axiShim in DM_System_Bus
2022-08-15 16:18:23 +00:00
Alexandre Joannou
47930189da
Bump BlueStuff + assume external subordinate_0 parameters that match internal bus
2022-08-15 16:18:23 +00:00
Alexandre Joannou
e4bdbfc98a
Bump BlueStuff + add outter subordinate trafic as master to internal bus
2022-08-15 16:18:23 +00:00
Alexandre Joannou
bb62b703c8
Address some rebase nonsense
2022-08-15 16:18:23 +00:00
Alexandre Joannou
a65c93ee98
Update resetting in coreW
2022-08-15 16:18:23 +00:00
Alexandre Joannou
2c450aea8c
Some reset adjustments
2022-08-15 16:18:23 +00:00
Alexandre Joannou
a954fd5b38
Use NonPipelined dividers + update "reset_by" in CoreW
2022-08-15 16:18:23 +00:00
Alexandre Joannou
b32da9034b
Fix addr to DM_addr convertion (pointed out by jrtc27)
2022-08-15 16:18:23 +00:00
gameboo
45135a0bee
Don't assume a XILINX tool flow
2022-08-15 16:18:23 +00:00
gameboo
72320b32b2
Update to AXI lite for debug module port
2022-08-15 16:18:23 +00:00
gameboo
b9ee27f390
Update to WindCoreMid + Bump WindCoreInterface
2022-08-15 16:18:23 +00:00
gameboo
812c961360
Introduce the WindCoreInterface
2022-08-15 16:18:23 +00:00
Jonathan Woodruff
8cb96bae5c
Fixes for load address tracing.
2022-08-12 15:09:01 +00:00
Franz Fuchs
2f595167a4
commented out debug print statements in Ras.bsv
2022-07-29 15:41:28 +01:00
Franz Fuchs
e89af4a66d
added typedefs to STLPred
2022-07-26 09:18:20 +01:00
Franz Fuchs
d3e8ef8d90
removed unnecessary declarations in RenameStage
2022-07-25 13:18:50 +01:00
Jonathan Woodruff
a1065616e0
Fix tracing of writes to MMIO addresses.
2022-07-22 15:37:25 +00:00
Franz Fuchs
502e64c24b
fixed not defined warning in ConnectalBramFifo
2022-07-11 15:11:59 +01:00
Franz Fuchs
4abf838d62
implemented missing notFull method in SpecFifo
2022-07-11 14:56:30 +01:00
Franz Fuchs
ad9f2cab3d
used RVFI defines as declared in ToReorderBuffer
2022-07-11 14:18:19 +01:00
Alexandre Joannou
9960d67ed8
Removed some debug print statements
2022-07-11 11:55:40 +00:00
Franz Fuchs
c85b13c5af
added MELTDOWN_CF ifdef and enabled it
2022-06-30 12:55:53 +01:00
Peter Rugg
fb259583dc
Attempt to clear tag on exception path before forwarding.
...
This is likely to be bad for timing, but might just work at 25MHz.
2022-06-15 00:53:55 +01:00
Franz Fuchs
f8b97ceb6a
corrected ifdef in STLPred.bsv
2022-06-09 15:24:10 +01:00
Franz Fuchs
b79a228093
added no prediction STL predictor
2022-06-08 12:23:35 +01:00
Franz Fuchs
891567f3aa
added STL predictor module and moved state from SplitLSQ to it
2022-06-08 12:04:25 +01:00
Peter Rugg
b113d05095
Prioritise misaligned over RVFIDII load access fault
2022-05-18 14:59:43 +01:00
Franz Fuchs
fd639f4b22
added typedef for static number in Ras.bsv
2022-05-14 17:16:40 +01:00
Jonathan Woodruff
9bfaf4cbf0
Swap poliarity of prediction for comparison with upstream.
2022-03-25 14:03:06 +00:00
Jonathan Woodruff
6d7f95571f
Merge remote-tracking branch 'origin/CHERI' into jdw57_prediction
2022-03-25 13:06:22 +00:00
Jonathan Woodruff
3cdc2d31c8
Experimentally increase delay before reset.
2022-03-21 10:13:48 +00:00
Jonathan Woodruff
09db91f8c8
Reset counter if head becomes valid.
2022-03-16 11:39:57 +00:00
Peter Rugg
d0c1d97a2a
Print RVFI packets in RVFI_DII also
2022-03-15 10:04:18 +00:00
Jonathan Woodruff
7b78c0ed7b
Delay returns (up to 10 cycles) if there is an outstanding push.
2022-03-14 18:45:34 +00:00
Peter Rugg
a6b39b58a1
Clean up prints
2022-03-11 10:24:39 +00:00
Jonathan Woodruff
37a7745f1a
Fix a few errors in the previous commit, and importantly, make the
...
"push" from writeback just a write to the location that was meant to
push to, rather than the current head.
2022-03-10 11:04:54 +00:00
Peter Rugg
a6976c0071
Fix RVFI-only build
2022-03-09 22:18:08 +00:00
Jonathan Woodruff
9d68d877d9
Move to much simpler design.
...
Just update the head in Decode, and write data from Execute.
A loop calling from the same place will at least find the correct
address.
Also, the bad fixup interaction is solved.
2022-03-09 12:32:01 +00:00
Jonathan Woodruff
bbdcf6dde9
A more sophisticated RAS protection delay.
...
Saturate down, and also predict with old push value if there is more
than 6 cycles of delay.
2022-03-08 15:17:54 +00:00
Jonathan Woodruff
064cd22114
Inteligently delay Decode (for up to 8 cycles) if we encounter a pop
...
while waiting for a push.
2022-03-07 17:52:11 +00:00
Jonathan Woodruff
c17874bdba
Add options to disable each of 5 aspects of enforcment of the Branching
...
Speculation Contract.
2022-02-22 16:21:53 +00:00
Jonathan Woodruff
e889bb95fa
Add a "delay" for fixups after a push.
...
A push updates the head pointer from Execute, but the instructions
between Decode and execute will have an out-of-date head pointer.
If a branch in that window mispredicts, it will get the head pointer
out of sync by resetting it to ignore the push.
By delaying by one branch, we seem to eliminate over 60% of the misses,
and reduce the cycle overhead from 0.5% to 0.2% in CoreMark, and still
well ahead of the baseline with no fixup.
2022-02-18 18:00:02 +00:00
Jonathan Woodruff
75d1afe8b4
Only push to RAS when the linking instruction is non-speculative.
...
That is, don't push in Decode, push from the training structure coming
from Execute, which is delayed until the instruction that issued it is
non-speculative.
2022-02-18 13:22:02 +00:00
Jonathan Woodruff
2b9ebb5b40
Ugly hack to avoid redirection epoch from being killed by the killAll.
...
Commit stage redirections are post-prediction and should need to somehow
be treated specially in the SpecFifo for epochs in the fetch stage.
They are post-commit, so should be unkillable somehow. I guess
SpecFifos are not meant to hold post-commit state currently.
2022-02-16 12:23:05 +00:00
Jonathan Woodruff
4961d321b9
Merge branch 'CHERI' into jdw57_prediction
2022-02-16 10:10:00 +00:00
Jonathan Woodruff
05df76073b
Revert some unintended changes from the last commit.
2022-02-01 11:08:37 +00:00
