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3f62a64056
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Author SHA1 Message Date
Ross Thompson
3f62a64056 Identified bug in the IFU which selects PCNextF when InvalidateICacheM is true. If the ID is invalid PCNextF should NOT be PCE. 2021-12-20 23:45:55 -06:00
Ross Thompson
a157235a4b Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-12-20 23:27:46 -06:00
Ross Thompson
ffe792bcfc Fixed bug on icache spill. if the cpu stalled on the completion it was possible to use the wrong address for the sram read. Also miss spill hit always selected the wrong address. 2021-12-20 23:27:37 -06:00
David Harris
b085339303 Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-12-20 21:16:25 -08:00
David Harris
07810f4025 Renamed to setup.sh and fixed path bug 2021-12-20 21:14:35 -08:00
David Harris
e00791a890 Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-12-21 05:10:17 +00:00
David Harris
09a24f7240 Improving Wally installation makefile 2021-12-21 05:10:14 +00:00
David Harris
bf9082b0ad Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-12-20 21:09:20 -08:00
David Harris
475fa01767 Fixing paths in wally-setup.sh 2021-12-20 21:08:34 -08:00
Ross Thompson
6acf6257e4 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-12-20 21:26:48 -06:00
Ross Thompson
50b307bc0e Looks like rdtime was accidentally replaced with rrame from a find and replace. 2021-12-20 21:26:38 -06:00
David Harris
972841717f Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-12-21 02:35:45 +00:00
David Harris
787af4287e Removed riscv-isa-sim submodule from Wally; use it in /opt/riscv instead 2021-12-21 02:35:41 +00:00
Ross Thompson
8416cae3fe Fixed Type 5b interaction between dcache and hptw. 
This is a load concurrent with ITLBMiss.
 2021-12-20 18:33:31 -06:00
Ross Thompson
b6d75d453a Modified LSU verilog is compatible with vivado. have to use extra logic IEUAdrExtM. 2021-12-20 10:03:56 -06:00
Ross Thompson
beb1988539 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-12-20 10:03:19 -06:00
Ross Thompson
df8bd78679 More signal name cleanup in LSU. 2021-12-19 22:47:48 -06:00
Ross Thompson
3eb5f33705 Remove verbosity from lsu state machine. 2021-12-19 22:41:34 -06:00
Ross Thompson
d3c3422d12 Rename of SelPTW to SelHPTW. 2021-12-19 22:24:07 -06:00
Ross Thompson
8feb36b926 Signal renames. 2021-12-19 22:21:03 -06:00
Ross Thompson
dc82d44f9e Hardware reductions in the lsu. 2021-12-19 22:00:28 -06:00
Ross Thompson
dc95896303 Removed HPTWStall. Not needed as InterlockStall from the LSU provides the equivalent. 2021-12-19 21:36:54 -06:00
Ross Thompson
138da1fefa Removed lsuArb and placed remaining logic in lsu.sv. 
Removed after itlb walk signal as the dcache no longer has any need for this.
Formated lsu.sv
 2021-12-19 21:34:40 -06:00
Ross Thompson
cc5c5da8bc Added file showing how to compile riscv toolchain for different extension combinations. 2021-12-19 20:31:55 -06:00
Ross Thompson
596cc4fde4 Moved convert2bin.py to the tests directory. This file converts the qemu ram.txt output into a binary for copy to flash card. 
mv qemu patches to tests directory.
 2021-12-19 20:11:32 -06:00
David Harris
a25d541dcf Moved generate of conditional units to hart 2021-12-19 17:03:57 -08:00
David Harris
3c3bfd055e Moved generate statements for optional units into wallypipelinedhart 2021-12-19 16:53:41 -08:00
Ross Thompson
d9cc9afd49 Changes to buildroot to support MemAdrM to IEUAdrM name changes. 2021-12-19 18:24:40 -06:00
Ross Thompson
32a4afc7a1 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-12-19 18:16:49 -06:00
Ross Thompson
a39b47d226 Switched to using an always block for lsu stall logic. This avoids the problematic x propagation. 2021-12-19 18:16:08 -06:00
Ross Thompson
eceb418056 Implemented what I think is the last required change for the lsu state machine. 2021-12-19 17:57:12 -06:00
Ross Thompson
fe5c05eb8d Created hack to get around imperas64mmu unknown (value = x) bug. 2021-12-19 17:53:13 -06:00
Ross Thompson
c453b285dc Fixed bug where icache did not replay PCF on itlb miss. 2021-12-19 17:01:13 -06:00
Ross Thompson
c9291655da Fixed bug most of the bugs related to the dcache changes, but the mmu tests don't pass. 2021-12-19 16:12:31 -06:00
David Harris
53cd2ac049 Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-12-19 13:53:53 -08:00
David Harris
9e6c9c38c0 ALUControl cleanup 2021-12-19 13:53:45 -08:00
Katherine Parry
e3f2a252cd fixed some small errors in FMA 2021-12-19 13:51:46 -08:00
Ross Thompson
f4d778c2f6 Corrected the LSU's fsm for stalling CPU. Removed state from hptw fsm. 2021-12-19 15:10:33 -06:00
Ross Thompson
a445bedcd2 Modified the icache memory to read using the virtual (non physical) address in the PCNextF stage. 
This allows recovering from an ITLBMiss to be 1 cycle after and simplifies the hptw slightly.
 2021-12-19 14:57:42 -06:00
Ross Thompson
225cd5a114 Renamed MemAdrM to IEUAdrM. This will free the name MemAdrm for use in the DCache. 2021-12-19 14:00:30 -06:00
Ross Thompson
cd3c1032b7 Adds FSM to LSU which will handle the interactions between the hptw and dcache. This will dramatically simplify the dcache by removing all walker states. 2021-12-19 13:55:57 -06:00
Ross Thompson
1126135b80 minro change. comments about needed changes in dcache. 2021-12-19 13:53:02 -06:00
David Harris
f201af4bb7 Renamed zero to eq in flag generation 2021-12-19 11:49:15 -08:00
David Harris
406f129bed Controller fix 2021-12-18 22:08:23 -08:00
David Harris
67577d7c91 Renamed RD1D to R1D, etc. 2021-12-18 21:26:00 -08:00
David Harris
721d0b5bcf Simplified shifter right input 2021-12-18 10:25:40 -08:00
Ross Thompson
4daeb6657f Merge branch 'tlb_fixes' into main 2021-12-18 12:24:17 -06:00
David Harris
7e026f3e78 Simplified Shifter Right input 2021-12-18 10:21:17 -08:00
David Harris
27ec8ff893 Shared ALU mux input for shifts 2021-12-18 10:08:52 -08:00
David Harris
eed2765033 Factored out common parts of shifter 2021-12-18 10:01:12 -08:00