Ross Thompson
a871118116
Merge branch 'main' into fpga
2021-11-29 10:10:37 -06:00
Ross Thompson
5642918ead
Merge branch 'main' into fpga
2021-11-29 10:06:53 -06:00
Noah Limpert
09d3322a26
updated fpu instantion on wallypiplinedhart to remove .*, updated spacing as well
2021-11-24 23:22:04 -08:00
Noah Limpert
93b626ce2a
replaced .* instation of priv module on wallypiplinedhart
2021-11-24 22:58:59 -08:00
Noah Limpert
f36cc7a2a3
Made abhlite instation on wallypipehart more clear, updated spacing for consistency
2021-11-24 22:48:01 -08:00
Noah Limpert
5b7c969170
updated module instation of LSU on wallypiplinedhard
2021-11-24 22:09:39 -08:00
Ross Thompson
705572f0ac
Fixed a very complex interaction between interrupts, the icache, dcache, and hptw.
...
If an interrupt occurred at the start of an ITLB miss or DTLB miss the page table
walk should be aborted before starting.
2021-11-20 22:35:47 -06:00
slmnemo
0bf1836a3a
Removed .* from hazard hzu(.*).
2021-11-17 14:21:23 -08:00
slmnemo
5c28553ca1
Removed .* from hazard hzu(.*) in wallypipelinedhart.sv.
2021-11-17 14:08:08 -08:00
Noah Limpert
b63c0f35d1
ieu variable naming changed for clarity
2021-11-17 13:24:28 -08:00
Noah Limpert
70a84b56c8
Updated IFU variable naming for clarity
2021-11-17 12:39:05 -08:00
Kip Macsai-Goren
7a8c21e71f
renamed presrc to forwardedSrc, replaced SrcAE and SrcBE with Forwarded src in the muldiv
2021-11-17 10:53:17 -08:00
Noah Limpert
27251a9935
Have replaced .* with signal names in ifu
2021-10-27 13:45:37 -07:00
David Harris
2cfbd888fd
more lsu/ifu lint cleanup
2021-10-23 12:00:32 -07:00
David Harris
4bf823e063
lint cleanup
2021-10-23 11:03:28 -07:00
David Harris
8e516e6391
Lint cleanup from wallypipeliendhart
2021-10-23 10:29:52 -07:00
David Harris
33358d101e
Lint cleanup: ahblite, ifu, hart
2021-10-23 10:12:33 -07:00
Ross Thompson
f6c6cb9ed2
Merge branch 'main' into fpga
2021-10-11 18:17:58 -05:00
David Harris
b3bded9e6c
Added more pipeline stage suffixes to divider
2021-10-02 22:54:01 -04:00
Ross Thompson
7ca801113e
Added debugging directives to system verilog.
2021-09-27 13:57:46 -05:00
Ross Thompson
af53657eaf
Merge branch 'sdc' into fpga
2021-09-25 19:33:07 -05:00
Ross Thompson
a7be88a43b
Changes to make fpga synthesizable.
...
Added preload to test simple program on wally in fpga.
2021-09-22 10:54:13 -05:00
David Harris
9ae25b0cea
Added Zfencei support in instruction decoder and configurations. Also added riscv-arch-test 32-bit tests to regression.
2021-09-15 13:14:00 -04:00
Ross Thompson
8836d91896
Removed amo logic from ahblite. Removed many unused signals from ahblite.
2021-08-25 22:45:13 -05:00
Ross Thompson
0cc47f3daf
Modified the preformance counter's InstRet to include ECALL and EBREAK by changing the hazard logic so these instructions don't self flush the W stage.
2021-08-23 15:46:17 -05:00
Ross Thompson
551e3491af
Moved the ReadDataW register into the datapath.
...
The StallW from the hazard unit controls this.
Previously it was in the dcache and controlled by both the HPTW and hazard unit.
This caused an issue when the CPU expected the data to stay constant while
stalled, but the HPTW was causing the data to be modified.
2021-07-22 14:52:03 -05:00
Ross Thompson
365485bd8b
Added performance counters for dcache access and dcache miss.
2021-07-19 22:12:20 -05:00
David Harris
2f81e4c70d
hptw: Removed NonBusTrapM from LSU
2021-07-17 15:22:24 -04:00
David Harris
863e6e72d6
hptw: Propagating PageTableEntryF removal through IFU
2021-07-17 15:04:39 -04:00
David Harris
a855e0170e
hptw: Propagating PageTableEntryF removal through LSU
2021-07-17 15:01:01 -04:00
David Harris
b65788d165
Replaced separate PageTypeF and PageTypeM with common PageType
2021-07-17 02:31:23 -04:00
David Harris
a898bbb991
Removed rest of HRDATAW from ahblite
2021-07-17 02:15:24 -04:00
Ross Thompson
fa26aec588
Merge branch 'main' into dcache
2021-07-15 11:55:20 -05:00
Ross Thompson
8610ef204c
Renamed DCacheStall to LSUStall in hart and hazard.
...
Added missing logic in lsu.
2021-07-15 10:16:16 -05:00
Katherine Parry
f5bfdf46db
fpu unpacking unit created
2021-07-14 17:56:49 -04:00
Ross Thompson
f4295ff097
Separated interruptM into PendingInterruptM and InterruptM. The d cache now takes in both exceptions and PendingInterrupts.
...
This solves the committedM issue.
2021-07-14 15:00:33 -05:00
Ross Thompson
3e57c899a2
Partially working changes to support uncached memory access. Not sure what CommitedM is.
2021-07-13 17:24:59 -05:00
Ross Thompson
afc1bc9c38
Moved StoreStall into the hazard unit instead of in the d cache.
2021-07-13 13:20:50 -05:00
Ross Thompson
47e16f5629
Fixed back to back store issue.
...
Note there is a bug in the lsuarb which needs to arbitrate a few execution stage signals.
2021-07-13 12:46:20 -05:00
Katherine Parry
ca19b2e215
Fixed writting MStatus FS bits
2021-07-13 13:22:04 -04:00
Katherine Parry
efdec72df1
Fixed writting MStatus FS bits
2021-07-13 13:20:30 -04:00
David Harris
b5dddec858
Fixed InstrValid from W to M stage for CSR performance counters
2021-07-13 13:19:13 -04:00
Ross Thompson
ec80cc1820
Lint passes, but I only hope to have loads working. Stores, lr/sc, atomic, are not fully implemented.
...
Also faults and the dcache ptw interlock are not implemented.
2021-07-09 15:16:38 -05:00
Ross Thompson
3345ed7ff4
Merged several of the load/store/instruction access faults inside the mmu.
...
Still need to figure out what is wrong with the generation of load page fault when dtlb hit.
2021-07-06 13:43:53 -05:00
David Harris
600e7802dd
Renamed Funct3ToLSU/fromLSU -> SizeToLSU/FromLSU and simplified size muxing in lsuArb
2021-07-04 18:56:30 -04:00
Ross Thompson
7f62808544
Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main
2021-07-04 16:19:39 -05:00
Ross Thompson
5b70eb86b0
relocated lsuarb and pagetable walker inside the lsu. Does not pass busybear or buildroot, but passes rv32ic and rv64ic.
2021-07-04 13:49:38 -05:00
David Harris
7e22ae973e
Fixed MPRV and MXR checks in TLB
2021-07-04 13:20:29 -04:00
David Harris
67e191c6f3
Added support for PMP lock bits in csrm and repartitioned design to pass around 8-bit PMPCFG entries
2021-07-04 11:39:59 -04:00
Ross Thompson
9f16d08d0d
removed mmustall and finished port annotations on ptw and lsuArb.
2021-07-03 16:06:09 -05:00
